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Патент USA US2405838

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Aug. 13, 1946.
A. LAWSON ET A1.
¿2,405,838
LIQUID SEPARATOR APPARATUS
Filed' March l, 1944
2 Sheets-Sheet 1
in;
un
7071171711711 11
I8 l/ 2/ 1624 33 I? 2"/
BY
?
Y
ñ
l
_
>
ATTORNEY.
Patented Aug. 13a, 1946
‘ 2,405,833
UNITED STATES PATENT oFFlcE
2,405,838
LIQUID SEPARATOR APPARATUS
Archibald Lawson, East Orange, N. J., and Charles
M. Young, Newburgh, N. Y.
Application March 1, 1944, serial No. 524,562
5 Claims.
'
,
f
(c1. 21o-43)
This invention relates, generally, to improve
ments in apparatus for separating mixed liquids
of different specific gravities; and the invention
has reference, more particularly, to a novel ap
paratus for separating oil from boiler feed water,
-and especially for separating from Water of con
densation any oil suspended therein prior to
Z
invention; and Fig. 2 is a horizontal sectional
view thereof, taken on line 2-2 in Fig. 1.
Similar characters of reference are employed
in the hereinabove described views, to indicate
corresponding parts.
Referring ‘to the drawings, the reference char
acter I0 indicates a housing, preferably of cylin
return of Vsuch water as a feed supply to a steam
-drical form, which is closed by a bottom wall Il
generating boiler.
and a top wall I2. The top wall I2 is preferably
This invention has for an object to provide a 10 adapted to be removed from the housing I0,
novel separator apparatus for the purposes stated
being normally secured to a top flange I3 of the
comprising a closed vhousing containing a plu
latter by bolts I4, or other suitable fastening
rality of spaced, substantially perpendicular,
means. The joint between said top wall I2 and
foraminous bodies or interstitial masses through
top flange I3 is sealed by an interposed gasket I5.
which mixed liquids of diiîerent specific gravities, 15 Arranged within'the interior of the housing
such as oil bearing water, delivered into the
Ill, to extend perpendicularly between its bottom
housing, is successively passed; said foraminous
and top walls I I and I2, are annular foraminous
bodies or interstitial masses operating to retard
bodies or interstitial masses IS disposed in con
movement of suspended oil particles, whereby to
centric spaced relation tov each other and to the
permit accumulative agglomeration thereof into 20 sides and axial center portion of said housing,
relatively large oil bodies, while at the same time
whereby to provide an outer chamber or well I'I,
exercising a capillary effect upon the accumu
one or more intermediate chambers or wells I8,
lated oil bodies, whereby the same tend to ascend
according to the number of spaced interstitial
through said foraminousvbodies vor interstitial
masses employed, and an inner or central cham
masses and discharge therefrom to the upper 25 ber or well I9.
portion of the housing interior, and thus, by
The foraminous bodies or interstitial masses I6
reason of the lower specific gravity of the oil
are each held inplace by a pair of laterally spaced
relative to that of vthe water, to collect and form
cylindrical perforate walls or grilles 20, which
a separated liquid oil mass within the upper
respectively bound inner and outer sides thereof;
interior of the housing, and above the Water 30 said Walls or grilles being footed within spacer
mass, so that the lower portion of the latter Yis
rings 2| which are suitably secured to the bottom
free of oil.
`
wall of the housing I0, and which embrace the
The invention has for another object to pro
lower marginal portions of said walls or grilles,
vide a separator apparatus of the kind mentioned
whereby to retain the same against lateral dis
comprising a closed housing having means for 35 placement from their supporting relation to the
admitting mixed liquids to be treated through
side faces of said foraminous bodies or inter
the side thereof, and yprovided within the interior
stitial masses I6.
thereof', for extension between its bottom and
The foraminous bodies or interstitial masses
top walls, with a plurality of spaced concen
lIIS may selectively comprise suitably aggregated
trically related foraminous bodies or interstitial 40 material adapted to provide a liquid pervious
masses which are surrounded by open spaces or `
wells; said housing having means for discharging
water from the bottom interior portion thereof,
porous wall mass of desired width or thickness.
The material employed to provide the foram
inous bodies or interstitial masses I6 should be
and means communicating with said open spaces
of such character as to be non-compacting and
or wells for discharging oil from the top interior 45 of such constituent form as to provide substan
portion thereof.
_
-Other objects of this invention, not at this
time more particularly enumerated, will be un
derstood from the following detailed description
of the same.
An illustrative embodiment of this invention
is shown in the accompanying drawings, in
which:
tially uniform porosity, whereby the body or
mass is not only pervious to the liquid mixture
to be treated, but also adapted to exercise a capil
lary e?fect especially upon one constituent of the
50 mixture which is desired to be separated from
the other constituent thereof.
i
A preferred form of material, which has been
found to provide the desired characteristics above
‘ -Fig. 1 is avertical longitudinal sectional View
referred to, is formed from a knitted mesh fabric,
o_f a- separator apparatus made according to this 55 preferably
knitted from a metallic wire strand,
2,405,838
.
f3
which may be or round, ribbon-like or other suit
able cross sectional shape. Such knitted mesh
fabric may be folded upon itself, rolled, or other
Wise arranged to form a body mass or masses
built up by superposed contiguous layers thereof,
4
Means is provided for introducing at desired
times into the interior of the housing I0 high
pressure steam for the purpose of cleaning or
washing out the foraminous separator bodies I6.
This means comprises a perforate steam ejection
ring 33 which is disposed on the bottom interior
of the housing, exteriorly of the foraminous sep
arator bodies. Connected with said steam ejec
tion ring 33 is a steam delivery pipeêa’ß arranged
and disposed between the keeper walls or grilles
2B, so as to entirely fill the space therebetween
from the bottom to the top of the housing inte
rior. The knitted metallic mesh fabric, by reason
of its uniformly and selectively sized 'interlinked 10 to project exteriorly through the housing side,
and to be suitably coupled to a steam supply
loops, when superposed and built up into the
line 35.
required body mass, will provide a porous struc
suitably-located in the side walls of the housing
ture, the interstices of which will net-‘only inter
communicate but Will also be .substantially uni
lil -are one or more clean-out manholes, normally
formly distributed throughout the mass, :whereby -is closedïby removable manhole covers 3B of con
to both efficiently engage and accurmulativelyY ventional design.
`Inthe~»o`peration of the apparatus, as used e. s.
agglomerate oil particles, while «at lthe Asarne ïtime
to separate oil from boiler feed water, the mixture
exercising a capillary e?fect on oil bodies _thus
of Water and oil is delivered into the interior of
accumulated therein, whereby to cause the latter,
under capillary effect, to tend to ascend through 20 the housing Iû through the intake 22, so as to
be deflected Íby ‘the 'deliector 'baule "£3 Land -thus
‘the interstitial mass, jan‘d, 'on "escape therefrom,
caused Ito “flow around Í'the‘in‘terior ‘of l"the charn
to collectas a water free *oil 'body at Jand within
"ber or well 'I-'I ‘along the exterior side‘of the iñrslt
the "top’porti'ons ofthe housing interior.
îoraminous body I6. The mixed liquids there»
A’Said ‘housing Ill is provided with alliduid mix
lupon penetrate ‘said Áfirst 'foraminou‘s ‘body I6,
ture intake 22, which Venters the pide thereof,
‘tending -to move 'laterally therethrough "so ‘as ~rto
preferably .at a point adjacent to the lower Ípor
emerge `from `the inner 'side thereof Vand ‘into ‘an
tion'or bottoni 'o‘f said ’housing suitably 'alîlxeìi
intermediate -chamber or well f8. 1Upon/gaining
within the housing interior, between 'the outer
the interior of the foraminous'bod'y ‘|6, ‘the par
most "foram'inous ‘body oririterstitial‘mass IB ’and
‘ticles
'of voil suspended >in the mixture ‘are'to a
:said >intake 2,2, is a laterally inclinedor angular 30
4considerable 'extent retarded'inmovement‘by'con
deiiec‘tor baille 23, which laterally 'dellects ‘the
Vtact with the `mesh material ‘olîïsai'd "bodyfandaœ
ingoing liquid 'mixture so‘as to .cause .it ‘to ‘flow
Kso» slowed in movement Yas ‘to >allow time foi-foil
'in a ¿given direction around and through 'the
particles >to gather Jand 'coale'sca "thus ’forming
outer chamber ‘or Well I1, whereby to uniformly
'therefrom -enlarged ‘oil èbodies. Owing 'to the
distribute‘the same around the exterior of said '
porous -or >interstitial and wick-like ’form'of "the
‘outermost Àfo'rarninous vbody or vinterstitial vmass
'foraminous body I6, ~4the same'exe'r‘oise's a v‘capil
"I‘Bfand so asto equalize its hydrostatic pressure
-laryeiî‘ect -upon `the 'enlarged oil bodies, ‘whereby
and cause "it to uniformly penetrate the latter at
the same tend to 'work -upward 'through 'the ‘body
all points, by eliminating direct impact of 'the
rliquid Vmixture at entering 'velocity "against the LIU I6, and, kassisted by vthe pressure-of cross rl'oiwin'g
liquid, tend to eventually escape `outwardly‘there‘portion of said outer'forarninousïbody‘ orV inter
îrom intojthe ’adjacent intermediate ’chamber
‘stitialmass (I6 'which is directly opposed ît'o 'the
or well 18. 4Owingfto'the‘increased‘mass and'low
'intake '22.
ì
y
’ergspeciñc gravity >of >the `enlarged yoil bodies,
Dependent from 'the top w'allIZ of the'hcusih‘g
I0 and axially disposed within thev inner >or'ce'n.- "»‘ which make their way'into the ‘chamber Aor "well
'~I‘8, lsaid bodies `tend :to rise v’to the top ‘oi the
‘tra‘l chamber-’or well I9 th’ereof,'is ajwater dis
housing
interior, 'wherein they'further tend "to
charge ‘pipe 2'4, "the llower intake ‘end of Vvtdiich ‘
>accumulate and forma ‘homogeneous‘oil mass A'on
is 'disposed ‘at the Dlower ’level ‘of fthe liousifngin
top -of `and ‘separated from the 'underlying lmass
terior and 'in `adjac'en’tly spacedrelationito V‘the
bottom 'Wall I I 'of Vvsaid housing. ÍSuitableÍ-p?ovi ci) of water. This process is repeated 4as the‘liqui'd
:mixture flows laterally -from‘the chamber ‘orwell
‘sionyis made, such as ‘the ’union Vlmember 25, Sfor
I8 into the next adjacent foraminous >body T6.
coupling -the 'upper 'end of said water Adiscl'ia'rge
In this connection, ‘it ’will ‘be >understood"th'a’rfal
pipe '.24 `to ‘a 'water `delivery conduit ’26, “through
though l‘for the purpose ‘of illustration, lbut `two
'which water vmay nbe drawn, by'pump or 'other
such‘foraminous bodies ‘I6 are‘shown inîthe 'ao
suitable means (not shown)„ for .delivery -to Aa `
place Of use, such e. g. a 1boilerto which ’thesclean
water is to serve as feed supply. '
`
`~Mounted onthe exterior' side o‘f'the'ho'using' I il,
with its Vrespective ends coupled incommunica
tion respectively `with'lipper and l'o'wer levels .of
'the -housing interior, is a Atransparent >liquid level
gage or glass 2l, ‘to visibly'indicate the .separated
bodie's‘of water and oil, and to .thus show the
amount of accumulated separated >oil contained
Within’the upper interior 'o‘f ‘the housing dur-ing '
operation ’of lthe apparatus.
Means are „provided'for tapping on Ífrom the
apparatus the separated >oil accumulated therein.
This (means comprises .an oil Vdischarge pipe'ìß,
provided with a suitably 'located control valve'f2i9.
Said oil discharge pipe is .provided with‘tapping
branches 30, vt'l and 32, whichïenter through’the
`‘compariying *drawings‘the'number ’of 'sai‘dïorami
nous 'bodies 'and intermediate chambers or Wells
is ‘subject ’to V’wide variation “and ‘the 'same 'may
comprise a -series Ythereof of "any “desired'numbe'n
accordingly as may lb`e'd"e`er:r1e<'i expedient iin any
given case, or where, ‘bj'y reason of 'the 'character
'of ’a Í'given .liquid v’mixture ’to betreated, fit .may
be‘de‘sirable to subject the same 'to a multiple
of » "the .successive separation Veffects . produced 'by
the ‘foraminous bodies IB 4as described.
By reason of the differences in Aspeci'ño„gravity
of v4the oil and water constituents of ytl'ie`.liquicl
mixture, 'tendency-of -the oil to' rise îthrough .the
water to the top thereof and thus Yto I.separate
therefrom occurs in all thechambers or wells Il,
‘I8 and "I9, Due however to the expedition of
these‘parating effect produced by the foraminous
top .Wall I2 Yof the'housin'g 'ID to respectively >com
.bodies l5, the ìWater arriving :in `the lowenpart
municate with the upper Í'portions io'f-therespec
tive chambers or wells I1, `I8 andl I9'.
>of -the central orlast `chamber or Well I9, will be
substantially (free 4from oil content, and conse
5
2,405,838 '
quently ‘at this point provides a body of clean wa
.ter which’may be withdrawn from the interior
ofthe apparatusthroughïthe discharge Vpipe 24.
As a body of separated oil accumulates> at the
top’ of the housing interior, its presence and
amount will be visibly indicated by the gage 2l.
Whenthe amount of accumulated oil warrants,
the same may be tapped off from the several
chambers or well I l, I8 and i9 through the oil
discharge pipe 28 and its tapping branches 30,
3l and 3,2, by pump suction or other suitable
means.
.
'
After a suitably prolonged period of use it is
oiï a separated constituent of said liquid mixture
which is of lesser speeilic gravity.
2. Apparatus for separating the constituents of
a liquid mixture, said constituents of lwhich are
of different specific gravities, comprising a closed
housing having mixture intake means entering
the side thereof adjacent to its bottom, a series
of concentrically spaced, liquid pervious, forami
Vnous body masses of substantial thickness ex
tending `perpendicularly through the interior of
said housing from the bottom to the tcp thereof,
whereby to subdivide said housing interior into
successive perpendicular chambers, whereby the
liquid mixture entering said housing through said
desirable to cleanse the interior of the housing
and especially the foraminous bodies I6 thereof. 15 intake means may pass inwardly from one cham
This may be done by closing the intake 22 and
ber laterally through a foraminous body mass into
the discharge outlets, leaving the liquid content
a succeeding chamber for the purposes described,
within the interior of the housing, and thereupon
said foraminous' body masses being adapted to
discharging into the latter live steam, preferably
exercise
a capillary effect upon the constituent of
under suitable pressure, from the steam ring 33. 20 the liquid
mixture which is of lesser speciñc
The thus introduced steam will churn the liquid
gravity, means in communication with the bot
and pass with the same through the foraminous
tom portion of the innermost chamber for draw
bodies I6 with strong washing and cleansing
ing
oif a separated constituent of the liquid mix
effect.
ture which is of greater specific gravity, and
Should it be desired to remove the foraminous 25 means in communication with the upper portions
bodies I6 for replacement, the top wall l2 of the
of all chambers for drawing off a separated con
housing may be removed, and said bodies and
stituent
of said liquid mixture which is of lesser
their supporting grilles may thereupon be re
moved and replaced. The bottom interior of the
speciñc gravity.
3. Apparatus for separating the constituents of
housing may be flushed out by removing the 30 a liquid
mixture, said constituents of which are of
manhole covers 36 to provide ingress and egress
different specific gravities, comprising a closed
to ñushing ñuid.
housing having mixture intake means entering
While we have described the apparatus of this
the side thereof adjacent to its bottom, a series
invention when used as a separator for remov
of concentrically spaced, liquid pervious, forami
ing oil from boiler feed water, it will be obvious
nous body masses of substantial thickness extend
that the same may be employed for separating
ing perpendicularly through the interior of said
treatment of any other kind of liquid mixtures
housing from the bottom to the top thereof and
wherein the constituents are of diiferent specific
adapted to subdivide said housing interior into
gravities and are not solubly miscible.
successive perpendicular chambers, whereby the
We are aware that various changes could be
made in the above described constructions, and
that widely different embodiments of this inven
tion could be made without departing from the
scope thereof as defined by the herefollowing
claims. It is therefore intended that all matter
contained in the foregoing description and shown
in the accompanying drawings shall be inter
preted as illustrative and not in a limiting sense.
We claim:
liquid mixture entering said housing through said
intake means may pass from one chamber later
ally through a foraminous body mass into a suc
ceeding chamber for the purposes described, each
foraminous body mass comprising superposed
layers of knitted metallic mesh adapted to exer
cise a capillary effect upon the constituent of the
liquid mixture which is of lesser speciiic gravity,
laterally spaced grilles bounding opposite sides of
each said foraminous body mass to retain the
1. Apparatus for separating the constituents of 50 same in place, means in communication with the
a liquid mixture, said constituents of which are
bottom portion of the last chamber for drawingV
of dilferent speciiic gravities, comprising a closed
01T a separated constituent of the liquid mixture ~
housing having mixture intake means entering
which is of greater specific gravity, and means in ‘
the side thereof adjacent to its bottom, a series
communication with the upper portions of all
of spaced concentric, liquid pervious, foraminous 55 chambers for drawing off a separated constituent
body masses of substantial thickness extending
of said liquid mixture which is of lesser specific
perpendicularly within the housing interior be
gravity.
tween the top and bottom thereof adapted to sub
4. Apparatus for separating the constituents of
divide said housing interior into successive per
a liquid mixture, said constituents of which are
pendicular chambers, whereby the liquid mixture 60 of different specific gravities, comprising a closed
entering said housing through said intake means
cylindrical housing having mixture intake means
may pass from one chamber laterally through a
entering the side thereof adjacent to its bottom,
ioraminous body mass into a succeeding chamber
a plurality of liquid pervious cylindrical forami
for the purposes described, each foraminous body
nous bodies of substantial thickness extending
mass comprising superposed layers of knitted 65 perpendicularly
through the interior of said hous
metallic mesh adapted to exercise a capillary
ing from bottom to top thereof and concentrically
eifect upon the constituent of the liquid mixture
spaced relative to each other and to the side Wall
which is of lesser speciñc gravity, laterally spaced
of said housing, whereby to divide said housing
grilles bounding opposite sides of each said
interior into successive perpendicular chambers
foraminous body mass to retain the same in place,
means in communication with the bottom interior
of said housing for drawing off a separated con
stituent of the liquid mixture which is of greater
specific gravity, and means in communication
70 comprising outer, inner and intermediate cham
ber space, a deilector bañ‘le extending angularly
from the housing side wall so as to be interposed
between the intake means and the outer face of
the outermost foraminous body, whereby the
with the top interior of said housing for drawing 75 liquid
mixture entering the housing through said
momes
T7
intakelmeans ¿may pass #from ith-e :outerehamber
space to the inner Lchamber :space îl‘at'erally ¿and
sueeessivelyïthrou'gh ¿said fforaminous =lo‘odies and
intermediate chamber‘space ¿for the-‘purposes ide
>scribed, said foraminous bodies ¿each icnmprising
>super-posed ¿layers îof knitted :metallic V„mesh
fad'apte'd .to exercise >a .capillary :effect ‘upon Ithe
constituent .of Vthe >liquid mixture'whiohisûzif :lesser
specific fgr‘a’v'ity, .laterally V“spaced 'grilles 'bounding
.opposite ¿sides :of .each :foramin'ous body Lto lretain
isïh’e fsameîm place, means I in :communication with
the bottom lporti'on :of fsaid :inner fchaniberïspace
~for drawing `oi‘lî :la separated .nonstiizuent-‘of the
‘lmui‘drmixture i‘.vlf'liichzis zofzigreater speciñt: gravity,
andimeans-„in communication 'with'lthe upperzpor
`tions zof ¿all chamber spaces :for :drawing off a
separatedlfconstituent >of :said liquid mixture which
is of îlesser speciñmgravity.
f5.11n apparatus of :the kind .deñned in claim'A,
.including a îsteam ejector `riing mounted Within
tlieîb’öttom interior portion-.of said housing.
Av'ARCHIBI’LLD LAWSON.
CHARLES M. YOUNG.
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