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ADsoRPTIoN APPARATUS
Or(igina1 Filed June 25, 1943
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INVENTOR ,
ENRIQUE L. LUACES
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/48
BY
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ATTORNEYS
'2,413,171
Patented Jan. 7, 1947
UNITED `STATES PATENT orifice
2,413,771
' ADSORPTION @relief-DUS
Enrique L. Luáces, Dayton, O_hio, assignor to
""Chemical Developments Corporation, Dayton,
Ghio, a corporation of Ohio
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Original application June 25., 1943, Serial No.,
492,217. Divided and this application Novem
per 1, 1943, serial No. 508,513l
n »4 claims.
(o1. issu-...4.5) Y’
1
.
2
Air to be treated enters the adsorber through
This application is a division of copending ap
valve |42 ‘and header 'U53 and flows downwardly
creation> serial Ndfiea-alvgnied June 25, 1943.
' This invention relates to method and appara
through beds |25 and |28 and upwardly through
tus for treating air,`and more particularly deals
with adsorption apparatus, ’ More speciñcally,
through bed |25 and the portion flowing upward
bed ` '|21'.-
ly through bed E21 commingle within the space
between these two beds and then iiow downward
ly through- the riser |35 to the bottom of the ad
the invention deals with adsorption apparatus
for treating large volumes of air to remove va
Vpors and fumes'therefrom, as for example, the
sorber. Atv this point the portion flowing up
wardly through- bed |21 and the portion flowing
downwardly through bed |25 commingle with the
volatile solvents employed in connection with
the gravure printing inks.
The portion flowing downwardly
'
Especially inl printing plants, it is necessary
portion flowing downwardly through bed |28 and
thatthe printing be accomplished at high speeds
the whole exits through conduit |44 and valve
so that a' large volume of solvent is evaporated,
and therefore it isnecessary to remove large vol
urnes of air _from the roomv in Aorder to maintain 15 In order to insure proper division of flow
through the legs of the header M3, the upper leg
the solvent vapor concentration within healthful
|45.
and safe limits.
'
l
v
thereof, which Ícarries only one-half the amount
-
of fluid asv the lower leg thereof, may be restrict
ed in any suitableand convenient manner, such
adapted for handling large volumes of air and in 20 as by making a portion thereof of a smaller di
Accordingly, it .is a primary object of> the pres
ent invention to provide an adsorption apparatus
ameter asis indicated in the drawing by the por
tion bearing the reference numeral |43a.
During the steaming cycle steam enters
through valve M5 and iiows into the adsorber
doing so to remove solvent .vapors therefrom.
- The present invention will be more fully un
derstood from the following description taken in
connection with the accompanying drawing
which illustrates an adsorber constructed ac
25 through conduit |45. One-third of the steam en
tering thev adsorber through conduit |44 will
cording to the present invention.
Referring to the drawing, there is illustrated
an adsorber at ißt which is >supported on a skirt
|25 and within which there is located a plurality
of beds of adsorbent material, as for example,
ñow --upwardly through bed |23 and thence into
conduit |43 and two-thirds of the steam enter
ing the adsorber through conduit Idd will iiow
30
activated carbon. These beds are indicated, re
spectively, at |26, |21 and | 26 and are transverse
located inthe vertically arranged yadsorber shell
| 29 in vertically spaced relationship wherebythe
said shell is divided into four separate compart
upwardly through riser |35 into the space be
tween the beds |23 and |21 and half of it will
then iiow upwardly through bed |25 and into
conduit v|53 and the other half will flow down
wardly through bed |21 into the conduit |43.
35
The distillate will exit from conduit |43 through
valve |41.
ments.
lThe uppermost of the beds at
Any condensation within the adsorber shell
|25 is supported
on «the shell |29 by an angle |30 and comprises a
forami-nous supporting plate I3! and a wire mesh
by gravity into the vcondensate chamber |50
each supported by the angles |33 on theshell |29
and by the angles |36 on the member |35.
densate from the chamber |55.
during the steaming cycle will flow downwardly
screen 132 resting on >the said plate and directly 40 which is connected with the said adsorber at the
lox'ìverrnostl point in order to receive all of the
supporting the adsorbent material. The inter'
drainage'ftherefrom. A pipe |5| and a valve |52
_rnèdiate bed |21 and the lowermost bed |23 are
are effective to control the withdrawal of con
-T-he member |35 is a sleeve which traverses 45 ` During the drying and cooling cycle air will
enter through valve |48 and header |43 and will
, the beds |21 and r,|23 andwhic-h connects the
space above the Íorrneruwith‘ that below the
latter. The sleeve is preferably, but not necee
sarily', centrally> located 'in the adsorber, passes
through the beds- in anv aiäialdirection and is "oy
lindrical in cross section.
50
travel through the adsorber in the rsame manner
as the air to> be treated travels in the adsorption
cycle. The'drying and cooling air is exhausted
from the adsorber through conduit L54 and
value L49.
holes - lëâf |31',Y and> |38 v’intended to serve for
Those skilled in the art will understand that
while the flow of drying and coolingair has been
charging adsorbent to form the beds |26, | 21, Aand
|28, respectively, and the manholes |39, |110, and
of vair to be treated, the apparatus and method
«The body of the adsorber is provided with man
|¢i| are intended to empty the beds |26, |21, and
|28, respectively.
indicated i@ be in. the ,Seme direction as the now
of the present invention are not limited in that
sense, since the drying and cooling air could be '
3
4
passed through the adsorber countercurrent to
the flow of air to be treated with equal satisfac
tion. Likewise, those skilled in the art will
.
second conduit means for controlling the ñow
of desorption fluid into said adsorber, a fourth
understand that in the case of the adsorber
illustrated the ñow of steam may be reversed
said header for controlling the flow of products
of desorptionfrom saidïadsorber, a condensate
chamber attached to and in >iiuid communication
without materially influencing the ultimate re
sults. Generally speaking, it is preferred prac
tice to have the steam ílow in a direction op
posite to the direction of ñow of the air to be '
treated, but this is not requisite.
.
conduit means including a valve connected with
A, with the lowermost portion of said adsorber, and
a pipe line including a valve connected with said
chamber for permitting the Withdrawal there
The direction lil from of condensate.
of flow of >each of the fluids passed through an
adsorber is influenced primarily by local condi
tions and individual preference.
It will be understood that while there have
been described herein certain specific embodi- ~
A3. An adsorber comprising a vertical shell hav
ing closed ends, first, second and third beds of
adsorbent lying transversely in said shell and
being vertically> spaced from the ends thereof
tails of construction, and arrangement of parts,
and from each other, an imperiorate conduit
traversing thelower two of said beds and com
municating the space between the upper two
of said beds with the space below the lowermost
herein described »or illustrated in the drawing,
in view of the fact that this invention is suscep
said shell and communicating the space above
tibleY to modifications according to individual
preferencek and conditions without departing from
the spirit of this disclosure and the scope of the
appended claims.
the lower two thereof, means for passing fluid to
be Vtreated through said adsorber comprising a
first valved conduit for admitting fluid into said
ments of the present invention, it is not intended
that this invention be limited to the specific de
I claim:
thereof, header means externally connected with
the uppermostv bed therein with the space below
„
adsorber via said header and a second valved
conduit connected with the space below the
posed shell or casing, a first bed of adsorbent
lowermost of the beds for withdrawing the treated
material lying transversely of the longitudinal
ñuid from the adsorber, means for passing
axis of said shell or casing and adjacent to but
desorption fluid through said adsorber in a di
spaced from the upper portion thereof, a sec 30 rection opposite to the flow of the fluid being
ond bed of adsorbent material lying transversely
treated comprising a ñrst valved pipe connected
of the longitudinal axis of said shell or casing
with said second ‘conduit for admitting the
adjacent to but spaced from the lower portion ,
desorption fluid into said adsorber and a second
thereof, a third bed of adsorbent material lying
valved pipe connected with said ñrst conduit for
1. An adsorber comprising a vertically dis
transversely of the longitudinal axis of said shell
withdrawing the products of desorption> from said
or casing and intermediate said first and second
adsorber, and means for passing cooling and dry
beds, a cylindrical member centrally disposed
ing ñuid through said adsorber in a direction
along the longitudinal axis of said shell or casing
opposite to the passage therethrough of the
traversing said second and third beds and ccm
desorption íiuid comprising a third valved con
municating the space above the latter with that 40 duit connected with said first conduit to admit
below the former, a header external of said shell
cooling and drying air into said adsorber and
communicating the uppermost portion- of said
a fourth valved conduit connected with said sec
adsorber with the portion of said adsorber in
ond conduit to withdraw the cooling and drying
termediate said second and third beds, means ’
in association with said header permitting the
flow of iluid into and out of said headerg’conduit
means connected with the bottom portion of said
adsorber adapted to permit the flow of fluid into
air from said adsorber.
4. An adsorber comprising a vertical shell hav
ingclosed ends, three horizontally disposed and
vertically spaced beds of adsorbent material
within said shell dividing the same into four sep
and out of said adsorber, means for introducing
arate spaces, an imperforate conduit arranged
desorption ñuid into said conduit means'to be 50 within said shell and traversing the lower two
passed to said adsorber, means for withdrawing
of said beds to communicate the space above
products oi desorption from said adsorber via
the-upper thereof with that below the lower there
said header, and means for withdrawing con
of, external header means connected with said
densate from said adsorber, said last mentioned
shell and having a branch communicating the
means lying along the lowermost portion of said
uppermost space therein with the space inter
adsorber.
mediate the lower two beds, first conduit means
2. An adsorber comprising a vertical shell hav
including a valve connected with said header
ing closed ends, three horizontally disposed and
intermediate the ends thereof for controlling the
vertically spaced beds of adsorbent material
flow of the fluid to be treated into the same, a
within said shell dividing the same into four
second conduit connected with said shell below
separate spaces, a hollow member arranged with 60
the lowermost bed for -permitting the flow of
in said shell to traverse the lower two of said
treated ñuid out of said adsorber, a third
beds and to communicate the space above the
desorption fluid conduit including a valve con
upper thereof with that below the lower thereof,
nected with said second conduit means for con
external header means connected with said shell
trolling the flow of desorption iluid into said
and communicating the uppermost space there
in with the space intermediate the lower two
beds, first conduit means including a valve con
adsorber, a fourth conduit including a valve con
nected with said header for controlling the ñow
of products of desorption from said adsorber,
nected with said header for controlling the flow
that branch of the header to the uppermost space
of fluid into and out of the same, a second con
having one half the flow capacity of the branch
duit means connected with said shell below the 70 to the intermediate space to equalize the flow
lowermost bed for permitting the flow of ñuid
through each of the three beds.
into and out of said adsorber, a third conduit
E. L. LUÁCES.
means including a valve connected with said
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