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Патент USA US2133819

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Oct. 18, .1938.
‘ c. L. HOWSE ET ‘AL
2,133,819 I ‘
FLUID TREATiNG APPA‘RATUS
"Filed March 30, 1953 '
.
4Sheéts-Sheet 1
((6
MY/r, P 74am cs
Oqt. 18_, 1938;
>
_c. |_. HOWSE ET A1.
2,133,8i9 ‘
FLUID TREATING APPARATUS
Filed‘ March so, 1955
4 Sheets-Sheet 2
awn-$521M“ '
Mama: 7
Oct. 18, 1938.
c; L: HOWSE ET AL
‘2,133,819
FLUiD ' TiREATING APPARATUS
'
Filed March 30, 19:53
, 4 Sheets-Sheet s
Oct. 18; 1938.
V
_c. 1.. HOWSE' ET AL
v 2,133,819
FLUID TREATING APPARATUS
Filed March 50; 1935
4 Sheets-ShQe-t 4 V
/
. 60x
Patented 0a. is,
j - 12,133,819
um'rizp - s'rArEs PATENT or HCE
2.133.319
ramp ramrmo arraaa'ros
Curtis L. Howse, Detroit, Harry E. Brelsi'ord, Bir
mingham, and Samuel F. Cox \and Willis P.
Thomas, Highland Park, Mich, assignors‘to .
Diamond Power -Specialty Corporation, De
troit, Mieln, a corporation of Michigan
- Application March 30,
’
treating ?uidssuch as air, dust laden gasesand
'
1933. Serial No. 663,608
(c1._ze1--112)
22 Claims.
‘ This invention relates to an apparatus for
the like.
'
-
The invention is directed more particularly to
an apparatus 0! the above mentioned character
which provides means for e?ecting a contact be
tween the ?uid to be treated and a liquid and
Fig.6 is a view similar to Fig. 3 partly in‘ section
showing a further form of baille element;
Fig. '7 is a view similar to Fig. 3 and partly in '_
section showing a still further form ofbaiile ele
ment;
Fig. 8_is a rear elevational view in section of a
further form of baiiie element; '
which includes elements disposed in the path ‘of Fig.'9 is a sectional view taken substantially on
- the ?uid to be treated and means for moistening the line ‘9-9 of Fig. 8; 4.
.
1' the surfaces of these elements.
‘
One 'of the primary ‘objects 0! this invention is
to provide in an apparatus of the above men
tioned charactersmeans for neutralizing the effect
of the velocity of the ?uid to be treated on the
1‘ liquid ?owing’ over the elements disposed in the
path of the ?ow of the ?uid. More particularly,
the invention contemplates the provision of means
ior preventing the ?uid ?owing through the pas
sage from blowing the liquid on the elements to
the rear faces of the elements.
>
‘ I A'iurther object of this invention isto provide
10
Fig. 10 is a sectional view similar to Fig. 9 show
ing a further modi?ed form oi construction;
Fig. 11 isa; view similar to Fig. 9showing a still
further modi?ed form of construction; .
Fig. 12 is a view similar toFig. 1 showing a
further modi?ed form oi~ baiiie element;
.Fig. 13 is a fragmentary horizontal sectional
‘view through one of the elements shown in Fig.
12;
Fig. 14 is an enlarged sectional view through a _
further modi?ed form of element;
20
Fig. 15 is a view similar to Fig. 1 showing a still
in an apparatus of the above mentioned charac- _' further modi?ed form of construction; 1 _ . ~
. Fig..16 is a horizontal sectional view through
ter, means for effecting an even ‘distribution of.
the structure shown in Fig. '15;
_
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\_
, .
the liquid over the ‘surfaces of the elements dis
*5 posed ilLthe path or the ?uid ?ow.
Fig. 17 is an enlarged elevational: view ‘of a 25
‘
The invention further contemplates the provi
slightly modi?ed form of ba?le element;
_
.
Fig. 18 is a semi-diagrammatic view similar to
the maximum amount of ‘moistened surface for . Fig. 1 but showing a mechanism for automatically
adjusting the inclination of the baiile elements;
contact by the ?uid to be treated.
The invention further contemplates the pro- v Fig. 18 is a fragmentary sectional view taken 30
sion of means for obtaining in a minimum space
vision in any apparatus of the above mentioned
character of means for reducing .to a minimum
the amount of liquid necessary to keep the sur
faces of- the elements moistened to the desired
degree.
-
Numerous other objects and advantages of this
invention will become more apparent as the fol
lowing description proceeds, particularly‘ when
substantially on the line 19-" of Fig. 18;
,
Fig. 20 is a view similar to Fig. 1 showing a con
trol means for the supply of the wetting medium;
Fig. 21- is a view similar to Fig. 20 showing a
slightly modi?ed arrangement of parts;
Fig. 22 is a sectional view through a gas treat
ing apparatus showing a further modi?ed form
of baiile element;
‘
'
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Fig. 23 is a fragmentary sectional view taken
40
substantially on the line 23-—23 of Fig. 22;
4° wherein:
Fig. 24 is a view similar to Fig. 1 showing a fur
Fig. 1 is a semi-diagrammatic vertical sectional ’
view through a gas treating apparatus con-v ther modi?ed form of construction;
Fig. 25 is a view similar to Fig.‘20 showing a
structed in accordance with the teachings of this '
modi?ed form of control means for the supply of
invention;
.
'
45
>
I
Fig. 2 is a horizontal sectional view talren sub . the wetting medium; and
Fig. 26 is a view similar to Fig. 25 showing a
stantially on the line 2-2 of Fig. 1;
further modi?ed arrangement of parts.
Fig. '3 is an enlarged semi-diagrammatic eleva
In its vbroader aspects the present invention is
.tiona1 view of a slightly modi?ed form which the
directed to a means for eiiecting a contact be
50 baiile element may assume;
tweena ?uid and a liquid. The means for ac
Fig.4 is a view similar to Fig. 3 and partly in complishing this preferably comprises a casing so
reference is had to the accompanying drawings,
section showing a further modi?ed form of ele _
ment;
-
in which a plurality of ba?ie elements are mount
ed together with means for moistening the sur
faces of these elements by v?owing a liquid over
Fig. 5 is a view similar to Fig. 3 and partly in
a; section showing a iurther form of baiiie element; ' the same. The ?uid to be ‘treated enters one end 68 _
2
of the casing and is discharged from the other
_ end thereof, having contacted with the moistened
shown as being mounted in a ?ue designated by
the reference characters 23 and 24. The portion
surfaces of the baiiie elements during its passage
r'through the'casing. The ?uid to be treated may
of supply of the gas to be treated, while the por
23 of the flue is connected to a furnace or source
be dust laden gases such as are discharged from
boilers, industrial furnaces and the like, or may
be air. If the ?uid to be treated is a dust laden‘
gas, the ‘device functions as a deduster, the dust
discharge for the treated gases. It will be under
stood that the gases in the portion 22 of the ?ue
particles and the like in the gas being trapped
contact with the wetted surfaces of thebaiile ele
tion 24 is connected to a suitable stack or other
will enter'rthe chamber 2|, be treated therein by
10 in the liquid on- the surfaces ofthe elements so - ments 22 and will be discharged from the cham v10
ber by way of the'portion 24 of the ?ue. While
that the gas ismoistened and cleaned before it
is discharged from the casing. If the ?uid to be - the baiiie elementsmay be arranged within the
treated is air which is to be humidified,‘ the air
‘during its passage through the casing becomes
moistened with the moisture’ on the bailie- ele
ments so that the air is discharged from the cas
ing moistened to a desired degree withva suitable
liquid such as water.
To facilitate the description of the invention,
the word “gas” will be utilized to designate the
?uid whichis caused to flow through the casing
to be cleaned and/or moistened.‘ The term “gas",
therefore, is to be ‘construed as meaning air,
furnace gases, or other ?uids. Further, the term
"liquid" will be used to designate the substance
which vis utilized to moisten the outer surfaces of
the baiile elements. When the device is utilized
as a deduster, this liquid will have suitable dust
collecting characteristics, while if the device is
30 to be utilized as a humidifier, this liquid will have
ments.
.
The baiile elements 22 are supported on beams
25 which extend transversely of the chamber 2|,
these beams being so disposed that they support
the bailie elements above a hopper-shaped cham
ber 28 formed in the lower part of the casing 20.
A conduit 21 provides a discharge for the cham
ber 28, this conduit being provided with any suit
able valve designated by the reference charac
ter'28.
suitable humidifying characteristics. Thus the
term “liquid" is to be construed as meaning either
a dust collecting liquid, a humidifying liquid, or
any liquid which will serve the particular pur
poses desired when brought in contact with the
gas to be treated. Still further, the term "mois
‘
For effecting a. ?ow of the treating liquid over
the outer surfaces of the baiiie elements, the
following structure may beprovided. Disposed‘
above vthe casing is a reservoir “which is sup
plied with a suitable liquid by ‘a supply pipe 3|. 35
Passing through the top wall of the casing 20 and
tening”'is to be construed as meaning "wetting
extending into the reservoir to receive liquid from
or the application of a liquid to any desired
the same are nozzles 32, these nozzles being .ar
degree".
40
chamber 2| in any desired manner, they are pref
erably, as illustrated in Fig. 2 of the drawings,
staggered with‘ reference to each other so that
the gases passing through the chamber will con
tact fully with the elements. A guard 22' is pref
erably provided in the upper part of the chamber
and in advance of the bailie elements to prevent
the gas from passing over the tops of the ele 20
ranged to discharge'the liquid into the open tops
Heretofore, in apparatuses of the above de
of the bailie elements. The baille elements are
scribed character, use has been made of baille ele preferably hollow and are open at their tops and
ments arranged in the path of the gas ?ow, means closed at their lower ends, with the result that the
being provided for ?owing a treating liquid down
liquid discharged into the same will ?ll the ba?le
wardly over the outer surfaces of these bailie ele- . elements and will then over?ow the open upper
ends of the bafiie elements so as to ?ow down the
ments. In constructions of this character, dim
culty has been encountered in obtaining an even
distribution of the treating liquid over the sur
faces of the ba?‘le elements. One cause of this
' di?iculty has been that the gas ?owing through
outer surfaces of the same.
,
is
To neutralize the effect of the gas velocity on
the ?ow of the dustcollecting liquid down the
sides of the baffle elements, the ba?ie elements
the casing in which the baille elements are‘ mount
ed has blown the liquid around to the rear faces
of the ba?le elements, with the result that the
front faces of the elements, or in other words,
are inclined with reference to the vertical. It will ,
the faces of the elements which the gas first con
the bai'iie elements are inclined in a direction
opposite to the direction of gas flow. This inclina 55
tion of the bailie elements may be effected either'
55 tacts, have been relatively dry, while the rear
faces of the elements have been relatively moist.
Obviously, it is more desirable that the front faces
be moistened than that ‘the rear faces of the
baiiie elements be moistened, for the reason that
the gas ?rst contacts the front faces of the ele
ments. The present invention contemplates the
be noted that the ba?le elements are so inclined
that the upper ends thereof, lean toward-the
entrance portion 23 of the ?ue, .or in other words, .
by sloping the upper surfaces of the supporting‘
beams 25 or by suitably mounting the ‘supporting
beams for rotative adjustment so that the baiiie
elements may be inclined to any desired angle. It
will be understood that the nozzles 32 ?t loosely
provision of means for insuring an even distribu '- within the open upper ends of the ba?le-elements
tion of the liquid over the surfaces of the ba?le so that somev latitude in the angle of inclination of '
' elements and contemplates further the provision
of means to compensate for the tendency of the
gas to blow the liquid around to‘ the rear faces
of the baine elements.
_
.
In the drawings wherein like reference charac
the ba?le elements is afforded. Further, the guard
22’ preferably extends downwardly sumciently
far to prevent the gases from passing over the
tops of the ba?le elements even when the latter
are inclined to the greatest degree. If it is not
ters designate corresponding parts throughout
desired to make the beams 'rotatively adjustable
.10 all views, several embodiments of the inventive
.idea are disclosed. In Figs. 1 and 2 there. is dis
closed a construction which comprises a-casing
20, this casing providing a chamber 2| in which
baille elements designated generally by the refer
75 ence character 22 are located. The casing is
to thus vary the angle of inclination of the baffle
elements, the elements are preferably fixed at an
angle proportioned to the velocity of the gas flow,
or if the velocity of the gas ?ow is variable, some
intermediate angle may be selected.
’
With the elements inclined in this manner, it
_
’ aisaeio
.' will be apparent that gravity will tend to cause further advantage of providing more moistened
' the liquid ?owing down the outer ‘surfaces of the . _ surface in a limitedarea, since in a-;given height,
elements'to flow to the front faces thereof. The a greater area is provided by inclined elements
gas-?owing through the chamber will, on the other than is provided by vertical elements of the same
hand, tend to blow the liquid to the rear faces of shape.‘ Since the elements may be threaded
the 'bafiie elements. The result will be that the with‘ a minimum lead axially, manufacturing costs liquid will be more evenly distributed over the are decreased to a minimum and the element may
surfaces of the heme elements so that an ef be maintained in a-clean condition with a ‘small >
?cient contact of the ‘liquid with the gas to be ' amount of liquid.
10 treated will be obtained. The outer'surface of the
'As in the first described form of construction, 10
baiile elements may be smooth, if desired, and the - the baiile, elements 2f- are preferably hollow. In
elements may be made of any desired material, this embodiment of the inventlon,'however, liquid
such as earthen material, either dense or porous, ‘ is supplied to the interiors of the elements by noz
vitreous material, or any desired metallic ma , zles 36 which project into the baille elements
15
through sealed openings in the lower ends thereof. 15
terial.
-
'
.
9
It will be understood that in operation, if the
device is utilized as a humidifying device, the gas
?owing through the casing will contact with the
moistened surfaces of the baiiie elements and will
20 absorb some of the liquid thereon so that the
gas will leave the chamber 2 I‘ properly humidified. ;
If the device is used as a dedusting apparatus, the
These nozzles may, as illustrated, be connected to
suitable supply headers 31 associated with the
beams 25' in any ‘desired manner.
~
,
Itmight'be noted that by supplyingthe liquid .
'
to the lower ‘ends of the elements, a more even 20
temperature of the elements is maintained when
the ?uidto be treated is hot furnace gas. By
dust laden gases passing through the chamber
will contact with the moistened surfaces of the
ba?ie elements, and the liquid on the battle ele—'
supplying the cooler liquid to the inside part of
the baiiie element which is last ‘reached ‘by the
liquid ?owing over the'outside of the ba?le ele 25
ment, the latter is kept relatively cool, and losses
by evaporation of the liquid are minimized.
In Fig. 4 of the drawings a further modi?ed
form of construction is disclosed as comprisinga
ments will collect the dust particles, the dust laden
- liquid ?owing downwardly into the'hopper 28.
From the hopper the dust laden liquid may be dis-‘
charged by way of the conduit 21. The gases‘after
30 the dust particles have been removed from the ' ‘bafiie element 22” having grooves "formed in its
same will leave the chamber in a cleansed and outer surface. As illustrated, these grooves are
moistened condition by way of the portion 24 of relatively deep, and the baiiie element is so in
the ?ue.
.
'
In Fig. 3 a slightly modi?ed form of construc
35 tion is disclosed in which the baffle element 22* is
shown as being provided with a helical thread 35
cut in its outer surface. The treating liquid ?ows
down the surface of the baille ‘element by way of
the helical thread, and the baiile element is so in
30
clined that the liquid will tend to flow in the
grooves toward the front of the baiile element
where it is most ‘needed. In this embodiment the
ballle element is shown as being solid, and there
is disclosed a nozzle 29” for discharging the liquid
on to the upper end of the baiile element. It will
be understood, however, that the ba?le element
, may be hollow, if desired, and that the'liquid‘may
be supplied to the same either from above or be
clined as to overcome the tendency‘ for the wetting
medium to flow around to the rear of the bailie
element or to blow o? the baiile element by reason
of the gas velocity.
In this embodiment of- the invention‘, the
It will be apparent that with a. right hand ' _ grooves will function not only to aid in maintain- '
thread on the baille element, the effect of the in 'ing the liquid at the ,front of the baf?e elements, 45
clination of the element is to increase the slope of - but will function also to increase to a substantial
the thread on the one side ,_of the element and de-. extent the moistened surface available for con
crease the slope with'respect to the direction of tact with the gas. A periodic ?ushing of the baffle
gas ‘?ow on the other side of the element. Thus, element: will function tov clean the grooves or
low as desired.
the liquid ?owing down toward the front of the
ba?le element is on the greater slope, while the
liquid ?owing in the direction of the gas flow or
toward the rear of the baiileeiement is on-the
lesser slope. - By properly inclining thev bailie ele
ment, the effect of the velocity of the gas may be
troughs.
>
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"
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'
.
'
-
so'
-
In Fig. 5 a further modi?ed form of construc
tion is disclosed in which the ba?ie element 22° is
shown ascomprising a center shaft 4| and means
providing a spiralvpath 42 of substantial width
around the surface of the shaft or core 4|. This 55
spiral path is designed to conduct liquid slowly
Experiments have indicated that a baiiie ele- ’ from the top o'f'the baiile element to the bottom
entirely compensated for.
-
'
.ment. such as that above described, if positioned
vertically in thechamber 2 I , will lose considerable
and to present a large amount of moistened sur-. ' ‘
face. It will be obvious that the radial extent of
liquid due to the gas velocity blowing the‘liquid : the spiral as well ‘as the longitudinal travel of the 60
of! of the element. Further, experiments have
shown that the ba?le element will have‘ a greater
I amount of the liquid on its rear face than on its
spiral for each 360° thereof can be varied to suit
conditions. The ba?le elementis preferably ar
ranged so that the top thereof is inclined toward '
the gas ?ow to neutralize the effect of the gas _
velocity on the liquid in the helical trough. The 65
front face. If, however, the bame'element is in
clined to the proper angle, no liquidwh'atever is
blownp?' of the bailleelement, and the distribu
tion of the liquid on the front of the element is ‘
arranged as to provide a small angle designated
practically identical with that on the rear face
by the reference character Y to balance the effect
thereof. Thus the inclination of the bailie ele-‘
70 ments provides for the even distribution of the
of centrifugal force and to thus provide for a more
liquid over the surfaces of theelements, thus re
ducing the quantity of treating liquid utilized and
rendering the element'more efhcient as a contact
device.~
18
'
v
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~
The inclination of the baffle elements has the
means forming the spiral trough'is preferably so
even distribution of the liquid.
-
_ .70
The liquid may be supplied to the helical trough
in any desired manner. In the embodiment
shown, the core ll is provided with a central pas
" sage 43 which may be supplied with liquid either >
from the top or the bottom thereof in any desired 18
'
4
aisaaio ‘ .
manner (not shown). The core is provided at
spaced points with radially extending bores 44
_ which communicate with the central bore 43 and
which provide means for feeding the liquid to the
spiral trough at spaced points throughout the
length thereof. By thus feeding the liquid to the
. trough at spaced points, the liquid is prevented
from becoming too thick or heavy because of the
dust collected by the same. While the means
10 forming the helical trough is shown as being in
the nature of a spiral ?n integral with the core
maintain the moistened condition on the surfaces
of the elements and to‘ thus keep the elements
efficient as liquid‘ contact devices.
In Figs. 12 and 13 there is disclosed a modi?ed
‘form of construction in which bailie elements
22" are shown as being mounted in a casing 20*
In this modified form of construction, each baf
‘
?e element is preferably supported in a vertical -
position by a suitable beam ""At being under
stood that the bai?e elements will be so arranged
that the gas ?owing through the casing will
4|, it will be apparent that this trough might be contact the ba?ie elements. .
formed by a plurality of separate helical ringsJ
In this modified form of construction the baf
As in the previously described form of construc
?e elements are hollow, and a pipe 55 is disposed
tion, the element may be made of metal or ceram-‘
centrally of each baiiie, element. Each pipe
ic material, or other suitable substance.
>
In Figs. 6 and 7 further forms which the grooves
may assume are illustrated.
In Fig. 6 there is
disclosed an element 224 having a spiral thread
20 “on the outer surface thereof. In Fig. 7, there
is disclosed a construction in which thepbaiiie
element 22' has a multiple thread 46 on its outer
surface. In each instance the liquid may be
caused to travel downwardly over the outer sur
25 face of the element, the threads or ‘grooves pro
viding‘not only an increased moistened surface,
but providing also a means for slowly conducting
the liquid downwardly throughout the length of
.the heme elements.
30
'
In Figs. 8 and 9 a further modi?ed form of con
struction is disclosed in which the rear face of
the baiiie element 221 is provided with grooves 5|,
these grooves inclining from ‘a high-midpoint in
' substantially the center of the rear of the baille
35 element downwardly toward the front face of the
element. The front face of the element may be
smooth, as clearly illustrated in- Fig. 9 of the
drawings.
'
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7
With the construction disclosed in these ?gures,
it will be apparent that the liquid ?owing down
the‘ exterior surface of the element will be con
ducted to the front side or face of the element to
replace the liquid which is blown to the rear face
of the element by the gas ?owing through the
chamber in which the elements are mounted. The
elements may, as‘illustrated, be hollow and the
dust collecting liquid fed to the same in any de
sired manner (not shown).
.
In Fig. 10 there is disclosed a construction
quite similar to that shown in Figs. 8 and 9,
in which construction, however, the grooves III
are carried almost entirely around the elements
' 228.
With the grooves extended in the manner
disclosed in this ?gure, it will be apparent that
only a small area of the front face of the
element is'smooth.
extends within its respective element to a point
adjacent the lower end thereof, and each pipe
is supported within its element adjacent the up
per end thereof by a spider 56. The pipes all
‘extend upwardly into a reservoir 30*, so that
the liquid in thisreservoir may ?ow downwardly
into the bailie elements. It will be apparent
that the liquid will circulate downwardly through
each tube II, out the lower end of this tube, and
then upwardly between this tube and the inner
surface of the element. then over?owing the
top of the element.
-
In this form of construction the outer sur
face ‘of the element is shown as being‘?uted or
corrugated, and the open top of the element is 30
also preferably ?uted or notched to facilitate the
?ow of the wetting medium from the interior
of the element over the top edge of the same
and down the corrugations on the outer surface
of the-element.- Normally, the wetting medium
would ?‘ow in a narrow stream down the center
of each corrugation on the, baille element, but
under the in?uence of the moving gas stream,
the water in each corrugation is spread out into
a thin ?lm in the manner clearly illustrated in
Fig. 13. The width of the corrugations is pro
portioned to the velocity of the gas stream, and
the corrugations may be either uniformly spaced
or may be wider on the rear'face of the ba?le
element than on the front face thereof.
With this construction it will be apparent
that the gas passing around the baille element
will not wipe or blow the liquid of! of ‘the surface
of the element. Further, it will be apparent that
with the element surface corrugated or ?uted in
the manner disclosed, a greater dust collecting
surface will be obtained. Still further, the cor
rugations on‘the surface of the element are of
considerable assistance in disturbing the gas go
ing over the surface of the element creating a 55
turbulence which causes the dust particles held
by the gas to come into contact with the wetted'
surfaces on the element.
In Fig. 14 there is disclosed a baiile element 22"
tend to return the liquid to the front face of the ‘
element. In this construction, however, the front which comprises a central tube‘ 60 upon which
face of the element is ?uted orrcorrugated, as are threaded circular spools. or the like 6|. The
indicated by the reference character ‘I, so as’ to spools are spaced apart in any desired manner,
make the liquid cling more tenaciously to this as for example, by the projections 62, and the
In Fig. 11 the ba?le element 22'‘ is shown
as ‘being provided with the grooves II" which
face of the element.
-
-
tube “is provided with openings “by which
In each of. the several forms of construction _ a~treating liquid from the interior of the tube
Just described, ‘it will be apparent that the slope
may be discharged into the space between the
or inclination of .the grooves which carry the
spools. The arrangement isysuch that a liquid
wetting medium from the rear to the front face
of the element may be made any angle desired.
7.0 The angle of slope of the grooves will prefer
ably‘ be proportioned to the velocity of the gases
im'pringing against the face of 'the ba?le ele
- ment.
These constructions provide ‘for a‘self- _
supplied to the interior of tube 60 in any desired
manner will be discharged in a thin ?lm be
tween the spools to ?ow outwardly over the 70
surfaces thereof.
'
'
The spool pieces may be made of any desired
material such as earthen material, either dense
i'estoring distribution of the wetting medium over
or porous, a vitreous glazed material, metal, or
‘the surfaces of the bailie elements to uniformly
any particular substance desired. ‘A home ele TI
97,188,819,
' ment formed .in this manner will present a sub
the-links ‘litothus rotatively adlust thebeams " '
on their trunnions and to thus vary the inclina
A bailie element thus formed will also be rugged
in construction ‘since the spools forming the ma?
tion of the baiiie elements22°. -
- may be so arranged that the major axes of the
spools are offset with respect to each other, as
indicated in the drawings.
.
'
In Figs. 15 and 16 a further modi?ed form
of'construetion is disclosed as comprising a cas
.
'
v
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_
For effecting a longitudinal movement of the
link 11 as the gas velocity varies, any suitable
construction may be provided.’ By way of exam
ple, conduits II and 8| are shown as being tapped
into the portions 28° ‘and 24°, respectively, of the
?ue. These conduits communicate at'their ends
with a cylinder 82 in which a diaphragm '8 is 10
mounted. -With the diaphragm arranged in this
ing 2|n arranged‘in a ?ue 22“ and 24", this cas
- manner it will be understood that any variations
ing providing a chamber 2|“. in which the baiile
elements 22n are located. These baiile elements
are in the form of plates, and they are arranged
in velocity of the gas in the?ue will de?ect the
diaphragm. For example, if there is a velocity
drop, the diaphragm will de?ect to the left, while
if the pressure is increased, the diaphragm will
in staggered relation and at an inclinationto
the direction of thegas ?ow, as clearly illustrat
ed in Fig. 16'of the drawings. The angle of in
clination maybe any angle desired, dependent
so
s
stantial moistened surface within a limited space.
jor part thereof are small units which may be
readily removed. If desired, adjacent elements
10
.
upon the velocity of the gas.
‘ .
The battle elements are preferably hollow, and
nozzles 65 are provided for discharging a liquid
from the reservoir 30" into the interiors of the
elements. This liquid will ?ll the elements, and
be de?ected to the right.
i
i
its,
1
Connected to thediaphragm I3 is a rod N
which controls a suitable valve ll, this valve in
turn controlling the admission of ?uid under
pressure. to a‘ cylinder l‘. A piston (not shown)
is located in this cylinder, and this piston is
connected to the link 'I‘l to actuate‘the same.
with the construction disclosed, it will be
apparent that as the gas velocity increases or
surfaces of the elements in the vertical grooves 1. decreases, the'link 11 will be actuated to incline
66 formed thereon. The arrangement is such . the baille elements 22° to a greater or lesser
that the outer surfaces of the ba?le elements will extent, as desired. As brought out previously,
be entirely moistened so that they will act e?l
the open tops of the baiile elements provide for
30 ciently as liquid contact elements.
a
the necessary movement of the baiile elements
In Fig. 17 there is disclosed a slightly modi?ed while still maintaining registration between the
form of ba?ie element which may be substituted discharge end of nozzles 32° and the open ends
~ for those shown in Figs. 15 and 16. ~ It will be
of the baffle elements. It will be understood
noted that the element which is of ?at plate‘- ' that any suitable means other than that dis
35 like construction-is provided on its outer surface closed might be provided for effecting an actua
with grooves ‘Ill, these grooves being inclined tion of the link in dependence upon variations in v
to the horizontal. The grooves may, if desired,, the velocity ofa gas stream, the embodiment dis
be inclined downwardly toward the direction of closed being for the purposes of illustration only.
gas ?ow so that a liquid ?owing down the sur
In Fig. 20 there is disclosed a control means
40 faces of the-elements will be caused to travel adapted more particularly for use when the con- .
vtoward the front edges of the elements. The struction is designed to operate as a humidi?er.
grooves not only increase the area exposed to the In humidifying apparatuses, the degree of wet
gas stream, but also retain thewetting medium ness of the surfaces of the bailie elements should
to prevent it from being blown off the plate be varied as the 'moisture content of the gas
surfaces. It is contemplated that the grooves stream varies. This may be accomplished by 45
- will be relatively small so as to utilize the effect mounting a hygrostat 90 in the portion 23° of
. of surface tension of the liquid in more thorough
the ?ue, this hygrostat being of any suitable con
25 over?owing the tops thereof, will ?ow down the
ly ?lling the grooves _and exposing a greater
struction and being responsive to the humidity _ 1
wetted surface than would be the case if the
of the air being supplied to the- chamber 2|’
‘wherein the baiile elements 22' are located. The
grooves were relatively large or wide.
'
hygrostat is suitably connected to an, actuating
~means SI for the valve 92, which valve is dis
to the velocity of the gas to be treated. In con
posed in the conduit 3|!’ which supplies the wet
structions where the gas velocity is constant or ting medium to the reservoir 20’.
substantially so, the ba?ie elements may be per
. It will be apparent that the moistness of the .
manently inclined at a desired angle. Where the bame elements will be dependent upon- the quan- velocity of the gas stream varies, however, it is tity of moistening medium supplied to the reser- '
desirable t8 provide some means for varying the voir 30". Thus by providing the arrangement
inclination of the baille elements as the velocity shown.'the amount. of wetting medium supplied ‘ '
of the gas stream varies.
1
to the reservoir and thus the amount of the
An arrangement for accomplishing this result wetting medium supplied to the baille elements
is shown in Figs. 18 and 19, in which ?gures, ' may be varied in direct dependence vupon the
the reference character 20° designates a casing dryness of the air being supplied to the chamber
which provides a chamber 2|° connected to the 2|”, with the result that regardless of the initial
portions 23° and 24° of a ?ue. Disposed in the humidity of the air or gas, the gas will have the
chamber 2 |° are bames 22°, these baiilesbeing sup
desired degree of saturation ‘when it' leaves the _
ported on the cross beams 25°. These cross beams chamber 2|".
_
/ ‘
.
are provided on their ends with truunions~ ll
In Fig. 21 a slightly modi?ed form of construc
suitably journaled in the side walls of the casing tion is disclosed in which thehygrostat "'1 is lo
70 20° and projecting exteriorly of the casing at one cated in the portion‘ 24° of the ?ue, thus'being 70..
side thereof. Secured to the projecting ends of directly resp'onsiveto the humidity of the gas
the trunnions are links 16, these links being con
after it leaves the chamber 2|". As in the last
nected at their free ends to a link." as by the described form of construction,.this hygrostat is
pin and slot connections ‘I8.- It will be apparent arranged 'to control the actuation'of a valve
thatlongitudinal movement of link- ‘Fl will rock _ 021° which in turn controls ‘the supply .of the
As previously stated, it is desirable that the
- inclination of the baille elements be proportioned '
6 .
aisasio v.
melatonin: medium to the reservoir II“. In both tion is illustrated in m; as m which the nu
forms of construction it will be apparent that. meral 2|‘ designatu a gas treating chamber.
' provision is made to obtain a‘ desired satura
in which heme elements 22' are located. These
tionof the gas regardless of the initial dryness baille elements may assume any of the forms
of the gas to be humidi?ed. While the hygro
previously described and may be supported
stats have been disclosed as being either in the either vertically or inclined, as desired. The-nu
inlet or outlet to the gas treating chamber,“ it meral 3|‘ designates the supply pipe for the
will be apparent that if desired, hygrostats might
be located both in the inlet and the outlet, to
10 provide a dual control of ‘the moistening medi
to the reservoir. _
.
»
In Figs. 22 and 23 there is disclosed a further
form which the bailie elements ‘may assume.
moistening medium, this supply pipe being shown
as supplying the moistening medium to the res
ervoir 8|‘.
.
'
These baiile elements, designated by the refer
may be automatically actuated by a thermore
sponsive element Ill-located in the portion 23'
of the gas passage. The thermoresponsive ele
ence character 22', are located in the chamber
ment may be of any desired construction such
2]’, it being understood that they may, if’ de
sired, be staggered with reference to each other
and~ may be supported either vertically or in
clined with, reference to the direction of gas
as a thermocouple or the like, or may, as illus
formed withlongitudinally extending hollow pro
trated, be a closed container in which an expan
sible ?uid is trapped. This-‘container is shown
as connected by a conduit III to a bellows or
the like III, this bellows being directly con- I
necied to the valve 22* to actuate the latter.
The arrangement is such that the thermore
tuberances II. The tube is_twisted so that the
' protuherances DI extend spirallyaroimd the
axis of the tube. ~'Zl‘hus the protuberances pro
sponsive element is directly responsive to the
temperature of the gases supplied to the gas.
treating chamber and provides means whereby
flow, as previously described.
'
"
'
Each bame element comprises‘a hollow tube
10
Located in the suppiypipeis a valve 02* which
vide spiral paths down the outer surfaces of the " the supply of moistening. medium to the reser
tubes, in which paths the moistening medium voir and thus the supply to the baille elements
flows.
‘
will _be varied as the temperature of the gases
While the tubes may be formed in any desired ' varies. Thus the valve 02‘ may be opened wider
manne , they may, by way of example, be formed as the temperature of the gases’rises and may be
by drawing a cylindrical/tube through a die to
moved toward closed position as the tempera
form longitudinally extending ho'llow ribs or . ture of the gases decreases.‘
As brought out before, the
the like on the tube. The tube is then twisted _
’
thermoresponsive
element may be mounted either in the inlet or
to arrange the protuberances spirally around the
axis, of the tube, it being understood that the the outlet of the gas treating chamber, .and
tube may be twisted to any extent desired to thus mounting of this thermoresponsive element in
obtain any desired pitch to the spiral paths thus the outlet of the gas treating chamber is shown
formed. The ends of the tube may, if desired, in Fig. 28. In this ?gure the reference charac
be left circular, as illustrated, to facilitate the ter 2|‘ designates ‘a .gas treating chamber in
attachment of ?uid supply ?ttings to these tubes. ‘which bai?e elementsi 22" of any suitable con
As illustrated, a moistening medium may be struction are located? Disposed in the portion
supplied to the lower ends of the baille elements 24" of the ?ue is a thermoresponsive element
by ?ttings 8. connected to a ?uid Supply pipe '1, III" which may, as illustrated, be in the form
The moistening medium will enter the lower ends of a ?uid thermometer and may be connected by
a conduit Ill‘I to a bellows III". The bellows
of the elements, ?ow. upwardly through the ele
ments and over?ow the open upper ends thereof. is directly connected to'the-valve 92“ which con
The over?owing moistening medium will now trols the supply of moistening medium to the
ba?le elements by way of the supply conduit ll '1.
‘ downwardly over the outer surfaces of the baille
With this arrangement it will be apparent that
elements by way of the spiral paths formed by
the spirally arranged hollow protuberances.
when the gases leave the treating chamber at too
high a temperature, thus indicating inadequate
If desired, the moistening supply to the baf
fie elements may be located as illustrated in Fig. moistening thereof, the valve '2" will be opened
24 of the drawings. By reference to this’ ?gure further to supply more'moistening medium to the
' it will be noted that baiiie. elements 22', which are baiiie elements. Thus the ?ow of the moistening
similar to‘ the baille elements 22', are suitably medium may be directly controlled by the tem
arranged in the chamber 2|‘. Instead, however, perature of the gases leaving the gas treating
of supplying a wetting medium to the interiors of chamber, with the result that the gases will be
these elements, the wetting medium is supplied in moistened su?iciently to'maintain the tempera
this case by discharge nozzles 98 disposed in the ture thereof at some predetermined desired
degree.
.
chamber 2|‘ ‘and in advance of the baille ele
ments. These discharge nozzles are arranged to
While the thermoresponsive elements have
discharge a wetting medium into the gas stream
been disclosed as either in the-inlet to or the out- .
80 that the latter strikes the, baiile elements in ' let from the gas treating chamber, it will be ap
a saturated condition, the moisture together parent that, if desired, thermoresponsive ele
‘with the dust in the gases being deposited on the ments may be located both in the inlet and the
baille elements; The chamber 2 I‘ is shown as be
outlet to the gas treating chamber to thus provide
ing'provided'with a discharge conduit 21' adia
a dual control for the supply of moistening medi
oent one side thereof by which the dustJaden um. Still fln'ther, while both the hygrostats and
liquid is discharged to any suitable point. '
thermoresponsive elements have been disclosed as
'It constitutes a further feature of this inven-' being arranged to actuate valves for supplying a 70
tion to provide‘ means for automatically con
moistening medium to reservoirs, it is to be under
trollihg the supply of the moistening medium stood that in its broader aspects, the invention
'to the bailie elements in dependence upon the contemplates the automatic control of the mois
temperature of the gases either entering or leav
tening medium to the baiile elements themselves,
7s ing the gas treating chamber. Such a'construc regardless of whether these baille elements re 15
'7
0.18am '
ceive the moistening medium from a reservoir or‘
directly by means of supply pipes, as'in certain of
the embodiments of the invention disclosed. It
will be apparent that in the embodiments where
‘the moistening medium is supplied to the lower
ends of thebaiiie elements,.that as the supply is
increased, more of the moistening medium will
over?ow the upper ends of the elements to thus
vary the degree of moistening of the outer sur _
faces of the elements. '
1‘
From the above it will be apparent that the in
vention provides a dust collecting, humidifying or_
like device in which provision is made to neutral
. ize the effect of the gas velocity on the wetted
moistening medium tends to iiowby gravity to
one side thereof.
‘
3. In an apparatus of the class described. a_
gas passage, an element in said gas passage in the ‘
path] of the gas flow therethrough, means for 5
supplying a moistening medium directly to the ‘
entire outer surface of'the element, said element
being of substantial thickness and of such a cross
sectional shape. that should may readily ?ow
around the same and means supporting said ele 10
ment in such an inclined position that the mole
tening medium tends to flow by gravity to the
portion of the element that contacted bythe gas.
4. In an apparatus of the class described, a gas
sin-races of the baiile elements. Utilization is passage, a tubular element in said gas passage 15
j made 'of the force of gravity by inclining the in the path ofthe gas flow therethrough, said
elements so that the force of gravity tends to; element being of substantial thickness and of
cause the wetting medium to ?ow to the front
such a cross sectional- shape that a liquid may
readily flow around the same, means for supply
ing a moistening medium to the interior-of the
the surfaces of the elements so that in a'limited tubular elementv whereby the moistening‘ medium
area a great amount of moistened surface is over?owsthe top ofthe element and flows down '
faces of the baiiie elements. Utilization is also
- made of the increased area provided by grooving
’ obtained.
The invention provides for an even
‘distribution of the moistening medium over the
the outer surface thereof, and means for sup
porting said element‘ in an inclined position‘
surfaces of the ba?ie elements and provides that , whereby the moistening medium tends to flow by
a limited amount of the liquid will vmoisten the gravity to one facethereof.
"
~
surfaces sufficiently to effect a desired treatment
5. In an apparatus of the class described, a
of the gases. Theinvention further provides gas passage, a dust collecting element in said
means for insuring that the opposition to the passage in thepath of the gas ilow therethrough,
tendency of the gas stream to blow the moisten
means for supplying a moistening medium to the
ing medium oil! of the ba?ie elements will‘be" entire outer surface of said element, means for
varied as the gas velocity varies and provides supporting said element in ‘a position inclined
also that when the device is used as a humidify ‘with reference to the vertical, and means for vad
ing apparatus, the extent of saturation of the justing-the angle of inclination of the element.
treated gas may be maintained constant regard
6. In an apparatus of the class described, a gas
less of the humidity of the gas to be treated.
passage, an element supported in an inclined
In describing the grooved element of Fig. 17. position- in said gas passage in the path of the gas
it was stated that the grooves were preferably flow therethrough, means to supply a moistening
relatively small so as to utilize the effective sur
medium to the outer surface of the element, and
face tension of ‘the liquid entirely wetting the means operating to adjust the angle of. inclina
~ entire surface of the grooves, thus exposing a tion of the element upon changes in the velocity
greater wetted surface than would be the case if of the gas passing through the gas passage.
the grooves were relatively largeor wide. In fact.
7. In an apparatus of the class described. a
this principle is applicable: to other forms of gas passage, an element in ‘said passage in the
grooved or threaded elements disclosed.- It is, path of the gas flow therethrough, said element
furthermore, a desirable feature of the inven
having its outer surface provided with closely
- tion to-proportionthe size of the grooves accord
.spaced grooves inclined with reference to ‘the '
ing to the surface tension of the liquid employed ~ longitudinal axis of the element, and means for
supplying a moistening medium to the grooved
as a wetting or moistening medium.
.
_
While the invention has been described with
some detail, it isto be understood that the de
scription is for the purposes of illustration only
and is not de?nitive of the limits of the inventive
55 idea. The right is therefore reserved to make
such changes in the detailsof construction and
arrangement of parts as will-fall within the pur
view of the attached claims.
What we claim as our invention is:
.
'
I
,
- 1. In an apparatus of the class described, a
gas passage, an element in said. gas passage in the
path of the gas ?ow therethrough, means for
_ supplying a moistening medium to the entire out
er surface of said element, and means for causing
the moistening medium on the rear face of said
outer surface of said element.
'
i
. 8. In an apparatus of the class described, a gas
passage, an element in said passage in the path
of the gas flow therethrough, said element being
provided with a spiral groove in its outer surface,
means supporting said element in an inclined
position, and, means forsupplying a, moistening
medium to the grooved outer surface of said ele
ment.
-
‘
9. In an apparatus of the class described,'a '
gas passage, an element in said gas passage dis
posed transversely of the path of the gas ?ow
therethrough, the outer surface of said element
being provided with multiple threads, and means .
for supplying a moistening medium to the
‘threaded outer surface of said element.
10. In an apparatus-of the class described, a
'2. In an apparatus of the class described, a gas
passage, an element in'said gas passage in the gas passage, an element in said gas passage in
path of the gas ?ow therethrough, said element the path of ‘the gas flow therethrough, means '
for supplying a moistening medium to the outer
being
of substantial thickness and of such a cross
70
surface of said element, and means includinga
sectional shape that a liquid may readily flow‘ hygrostat disposed in said gas passage in advance to
around the same means for supplying a moisten
of the. element for controlling the supply of the
. I ing medium directly to the entire outer surface moistening medium to the element.
element to ?ow to the front face thereof. '
‘ /of the element, and means for supporting said
element in. an inclined position whereby the
11. In an apparatus of the class described, a
substantially horizontal gas passage, an element
.8:
aijsasr'e
in said gas passage extending substantially from
threaded surface angularly disposed with refer
the top to the bottom of the passage, and means . ence to the horizontal, and means for supplying
a liquid to the threads at the upper end of said
to apply a liquid to the outer surface of the ele
surface in such amounts that the liquid will not
ment at the top thereof, said element being pro
vided with a continuous spiral extending sub
over?ow the threads, the size of the .threads in
the surface being so proportioned to the surface
stantially from the top to the bottom thereof.
12. In an apparatus of the vclass described, a tension of the liquid supplied to the surface‘ that
_ substantially horizontal gas passage, an element - the liquid will form menisci from'the ridge of
each thread to the ridge of the next thread.
disposed substantially vertical in said gas pas
19.‘ In an apparatus of the class described, a 10
101 sage in the path of the gas ?ow therethrough,
said element having protuberances extending
spirally longitudinally thereof, and means for
supplying a moistening mediumto the outer sur
face of the element.
-= . 13. In an apparatus of the class described, a‘
gas passage, an element in said gas passage in
the path of the gas flow therethrough, said ele
ment having a grooved outer surface,. and means
for supplying a liquid 'to the outer surface of said
element to wet-the same, the grooves in said
gas passage, an element supported in an‘inclined surface being relatively small whereby the sur
position in said passage in the path of the gas ?ow . face tension of the liquid will cause the liquid in
therethrough,. means to supply a moistening each groove to be held up to the extreme edges
‘
medium to the outer surface of the element, and of its respective groove.
'20. In an apparatus of the class described, a
:0 means for varying the angle of‘ inclination of the
gas passage, abaiiie disposedin said gas-e
element, said means being’ automatically oper
able in dependence upon the velocity of the gas in the path of the gas ?ow therethrough and at
an angle to th‘e_horisontal, the outer surface of
?owing through the said gas passage.
‘
_14. In an apparatus of the class described, a said bailie being spirally threaded throughout its
‘gas passage, an element extending-in said passage length, and means for supplying a liquid to the
in the path of the gas flow therethrough, and threads at the upper end of said element in such'
means for supplying a liquid to the outer surface amounts that the liquid will not over?ow the
of said element, the surface of ‘said element being spiral threads on the element, the size of the
provided with means affording a continuous path threads on said element being so proportioned to
» of travel for said liquid substantially greater than "the surface tension of the liquid supplied to the
surface of the element that the liquid will form
the length of said element.
15. In an apparatus-of the class described. a a meniscus from the ridge of each thread‘ to the
ridge of the next adjacent thread.
gas passage, means to supply a gas to said pas
21. In an vapparatus of the class described, a.
sage to produce a ?ow- of the gas therethrough,
an element in said passage in the path of the gas gas passage, a baiiie element in said gas passage
flow therethrough, and means to supply a liquid in the path of the gas flow therethrough, and
to said element so as to ?ow over the outer‘ means for supplying a moistening medium to the ‘
surface-of said element, said surface vbeing so outer surface of the ba?ie element, the outer sur
grooved as to maintain a substantially uniform face of the baiiie element being so grooved as to
liquid ?ow thereover.
~
-
16. In an apparatus of the class described, a
gas passage, an element in said passage in the '
cause the moistening medium on the rear face of
the baii‘le element to flow to the front face thereof.
22. In an ‘apparatus of the class described, a
path of the gas'flow therethrough, said element substantially horizontal gas passage, a grooved‘
having its outer surface spirally grooved through "baiiie element disposed at an inclination to the
out its length, means for vsupplying liquid to said
surface, and means for controlling said liquid
supply-
.
,
-
g
-
17. In an apparatus of the class described, a
gas passage, means providing a threaded surface
> in the gas passage in the path of gas flow there.
through, and means for supplying a‘ liquid to
said threaded surface, the size of the threads in
said surface being so proportioned to the surface
tension of the liquid supplied to the surface that
vertical in said gas passage and in the path of the _
.gas flow therethrough, and means for supplying
a moistening medium to the outer surface of the
baine element, the inclination of the element and
the‘. arrangement of threads thereon being such
that the slope of the threads on one side of the
baffle element is increased while the slope of the
threads on the other side of the baffle element is
decreased, the slope of the threads being de
creased in“ the direction of gas ?ow past thev _ '
u the liquid will form menisci from the ridge of ‘ baiiie element.
.
u _
'
each thread to the ridge of the next thread.
_
18. In an apparatus of- the class described, a
gas passage, means in said gas passage in the
path of the gas flow therethroughproviding‘a
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