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Патент USA US2392705

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Jan. 8, 1946.
Filed April 1, 1944
2 Sheets-Sheet 1
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Jan. 8, 1946.
Filed April 1, 1944
2 Sheets-Sheet 2
' 2,392,705
_ Patented Jan. 8, 1946
Carlos B. Smith and Harry Leslie Bullock,
New York, N. Y.
Application April 1,1944, Serial No. 529,197
8 Claims.
This invention relates to scrubbing towers, ab
sorption towers, and similar column arrange
ments in which an air or gas ?ow to be cleansed
is introduced for flow in a direction opposite to
the movement or flow of a cleaning or absorbing
?uid, and in which the ?uid spray is produced
and maintained by the countercurrent velocity
action of-the air or gas. One of the de?ciencies
present in the conventional apparatus of this
(01. 261-79)
hood, showing the employment of a secondary
' T hood adapted ‘for adjustable placement above the
main hood;
Fig. 10 shows a. structure similar to that in Fig.
9, except that the hoods are provided with skirts
adapted to .be overlapped to a selected extent;
Fig. 11 shows a structure in which the upper
hood is adapted to be held in spaced relation to
the lower hood by means of spacing elements;
Fig. 12 is a sectional view showing the battle
general type is that when a decrease of velocity 10 ring
provided with a plurality of upstanding
of the air or gas through the column occurs, the
located between the vanes on the hood,
counterflowing liquid remains in the form of
whereby one set of vanes may be overlapped by
' relatively large drops, or even in streams, with
the other to a selected extent;
out being broken down into the ?ne spray or
Fig. 13 shows the vanes carried by the ba?le
mist necessary for collection. In addition, the
and the conical hood provided with a periph
decrease of velocity of the air or gas ?ow cuts
down on the contact of the air or gas with the
wet baiiies, and with the surfaces of the tower
and separating plates, and results in the decrease
eral skirt to overlap the vanes to a selected ex
tent by adjustment of the hood on its shaft;
Fig. 14 shows the hood provided with vanes
have lugs that support the hood relative
of centrifugal force, thus allowing some lighter 20 which
to the battle ring and at a selected position, ac
material to be driven or sucked through the col
cording to the spacers employed between the lugs
umn without being thrown out of the main.
ascending air or gas stream.
and the baiile ring;
Fig. 15 shows a structure wherein pivoted vanes
An object of the present invention is to pro
employed together with means by which all
vide means by which the velocity of the gas or 25 are
of the vanes may be simultaneously adjusted to
air moving through thetower can be maintained,
a selected angle; and
and particularly through those sections of the
Fig. 16 is a plan view of the structure of Fig. 15, I
tower where the air or gas is caused to pass over
someparts in section and others broken
the surface of ba?les in an outwardly rotating
direction, and where these moving gases come 30 away to disclose construction.
With reference to the construction shown in
into contact with the dividing plates and the out
1 to 3, inclusive, I indicates a shell com
side wall. The desired e?ect can be produced
prising the body of the tower or column, which
in' a number of ways, several of which are shown
> is of the conventional cylindrical type. This shell
in the drawings and hereinafter described.
In the accompanying drawings, wherein several 35 con?nes the gases or air ?ow which moves up
‘wardly through the column . and out through
embodiments of the invention are disclosed,
?lters located at the top of the tower, these and
Fig. 1 is a vertical sectional view of a portion
other elements relating to the directing of the air
of a column, constructed in accordance with the
or gas ?ow, as well as the means for directing '
Fig. 2 is a sectional view on the line 2--2 of 40 water ?ow through the column, being omitted
. for simplicity in illustration.
Fig. 1, looking in the direction of the arrows;
Provided at spaced intervals within the tower
Fig. 3 is a sectional view through one of the
or column are ba?le rings '2, secured at their outer
conical hoods and baf?e rings, showing the vanes
edges or peripheries to the inside of the tower
carried by the. hood in maximum degree of over
or column. Each of said ba?le rings 2 has its inner
lap with the ba?le ring;
edge provided with a dependent skirt 3, thus de?n
Fig. 4 is a view similar to Fig. 3, and showing
ing a central opening in the ring. Extending up
a baiile ring of double-wall construction;
wardly through the center opening in the various
Fig. 5 is a sectional view showing means by
spaced ba?le rings‘is a vertically adjustable shaft
which the effective depth of the inner edge or
skirt-portion of a ba?ie ring of double-walled ar 50 adapted to be raised or lowered for any selected
distance. For ‘this purpose, the shaft 4 is pro
rangement may be regulated;
vided at its topswith an eye-cap 5 attached to one
Fig. 6 is a sectional view showing a double
end of a supporting cable 6 extending over a pul-‘
walled baffle ring having its upper and lower walls
ley l rotatively mounted in the bearings 8 fas
curved or arched;
Fig. '7 is a sectional view showing a single 55 tened to the top plate 9 of the column or tower.
The cable 6 extendsover an outer pulley l0 ro
walled ba?ie, having means for adjusting the ef
tatively supported in ‘the bearing H secured on
fective length of its- dependent skirt;
the outside of the column I, from whence it ex
Fig. 8 shows an adjustable means for the skirt
tends to the Windlass ll operated by the crank l3.
of a double-walled ?at-faced type of ba?le ring;
The cable is provided with the spaced stops I4 and
Fig. ‘9 is a sectional view through a conical. 60
I 'asoavos _
l5 operative against the bracket l6 secured to the
24 extend upwardhr through holes provided in
column I, to thereby limit the raising and lower-v
ing- movement of the shaft 4.
the bailie ring 2. By adjustment of the nuts 28
The means for
on the bolts 21, ring 26 can be raised or lowered
to provide the correct open areas between the
. raising and lowering the shaft is suggestive, as‘
various other devices may be used for the pur
. vanes 2|.
Secured on the shaft 4 are a number of conical
In the construction shown in Fig. 5.
the bolts 26 are provided on the upstanding ?ange
formed on the lower wall 25, which, in this con
hoods l'l, each hood having its concave face di
struction, is not attached to the wall of the tower,
rected downwardly and provided with a central
but is wholly supported by the bolts 21 which can
hub or sleeve I8 surrounding the shaft 4. Each 10 raise or lower the wall ‘25 and integral ?ange 29,
hub l8 can bev ?xedlv secured to the shaft 4 in
to regulate the effective area of the skirt formed
proper position, or it can be arranged with a se
by the overlapped parts 23 and 29. The arrange
ries of holes I! and fastening pin 20, permitting
ment shown in Fig. 8 is similar to that of Fig. 5, ,
the selected location of each of the hoods on the
except that the double-walled baille ring has ?at
shaft 4. It will be observed that each of the
surfaces, as indicated at 2la and 22 in ‘Fig. 4.
conical hoods I1 is located slightly above one of
In Fig. 9 is shown the assembly of a double-'
the, baille rings 2. and that each hood carries a
cone hood. Located'over the main hood H is a
plurality of spaced radial and angularly disposed - second cone 3!! provided with its own hub 3|
de?ecting vanes 2| dependent from it. These
held on the shaft 4 by the set screws ‘32, so that
vanes are arranged at the outer edge of each of 20 it can be moved up or down on the shaft and
_ the hoods l ‘I, and impart a swirling action to the , ?xed at any selected distance from the hood l1.
upwardly rising gases, so that the gases rotate
When the apparatus is adjusted for a maximum
within the tower I. The vanes 2| are spaced apart
?ow of gas, the upper cone 30 should be positioned
so that openings-2'2 are located between them, and
to lie in contact with the hood l1, and the cone
the effective size of these openings can be reg
- and vane assembly raised to its maximum. To
ulated by raising or lowering the shaft 4 to cause
adjust the apparatus for less than maximum
the edges of the vanes to be overlapped to a
?ow, the" hood I1 and attached vanes are lowered '
greater or "lesser extent byathe skirt 3 on each
to the required extent to shroud o?’ asmuch of
of the baiile rings 2. Thus, for maximum capac-l
the apertures between the vanes as is necessary
' ity, the shaft 4 is elevated to bring the lower edges
to give the proper velocity to the outwardly mov
of the vanes to a level with the top of the skirt 3,
ing gas. The upper cone to would be raised to
as shown in Fig. 1. In Fig. 3, the openings 22 are
a point where it would act to block on‘ the area
reduced to the maximum extent by lowering of ' above the hood II to give the correct velocity to
the shaft 4, so that the vanes on each of the hoods
the inwardly moving gas.
i‘! have their lowervedges brought vdown to the 35
lower edge of the skirt 3. It will, of course, be
Fig.~ 10 shows another arrangement for two‘ .
vadjusting cones, wherein the lower cone or hood
clear that any selected intermediate position for , I‘! is provided with a peripheral skirt extending
the hood is possible by merely raising the shaft
4 to secure the desired overlap of the vanes ‘by the
skirts 3.
In the operation of the tower, a water flow is
- vertically from it, and the upper cone 30 also
has a vertical skirt at its peripheral edge of a
40 proper diameter to overlap the skirt 33.
introduced above the uppermost hood l'|,ca.using
- - the water to ?ow downwardly over the hoods l1
and ba?les 2, and become broken up into a ?ne
‘mist or spray by the action of the rising and swirl 46
ing gases introduced near the lower end of the 1
tower or column I. '- By regulation of the hoods,
' and vanes carried thereby, with respect to the
skirts provided on the bai?e rings, eflicient con
tact velocities are maintained between the moving
gas ?ow and the descending liquid, and with the
wet internal surfaces within the column.
tive adjustment of the'two skirted cones l1 and
30, shown in Fig. 10, is used to regulate the
velocity of the gases passing both inwardly and ‘
outwardly, as was described in connection with
the structure of Fig. 9. _'
In Fig. ll, the upper cone 30 is held spaced
relatively to the hood I‘! by means’ of spacers 35
of required height, extending through the bolts
36. This construction is particularly useful where
the hood I‘! is supported on. the baille ring, as
shown in Fig. 1'4.
Fig. 12 illustrates another means by which
- In Fig. 4 is shown a double-walled baille ring
regulation of the velocity of the gas passing
having an upper wall Zia and a lower wall 22,
through'the apparatus may be had. In this con
said walls diverging from the skirt portion 23 to 55 struction, the ba?le ring 2 is provided with a
ward the wall of the column to which the two
plurality of upstanding spaced vanes 40 secured
walls 2la and 22 are secured. This construction
avoids dead spots underneath the rings, and pro_
to the top face of the ba?le ring by being bolted
or riveted thereto as at 4,.l, and having their in
' vides for a more uniform circulation of the gas.
ner edges connected by the annulus 42. The hood
Fig. 6 shows a somewhat similar arrangement of 60 I‘! has a. plurality of dependent vanes 43 located
a doubled-walled ba?le ring. The ring in this em
between the vanes 40 on the baiiie ring, and ar-.
bodiment is provided with the curved or arched . ranged to overlap the same to an extent required
surfaces 24 and 25 instead of the ?at surfaces
according to the positioning of the hood I‘! on
shown in Fig. 4. The construction of Fig. 6 can be
the shaft 4.‘ In Fig. 13, the ba?le ring 2 carries
used where it is desirable to keep the resistance 65 the vanes 40, but the hood 2 is provided with a '
- . as low as possible, and where an extremely uni
skirt 44 which will cover or uncover outer edge
form flow of the gas through the tower is desired.
portions of the vanes 40, and thereby control
In Figs. 5, '7 and 8, means are shown for reg
the effective size of the spaces between the same
ulating the effective depth of the skirt or ?ange
when the hood 2 is raised or lowered, as required. at the inner edge of both the single-wall and 70
In the structure of Fig. 14, the central shaft
, double-walled baffle plate, to thereby regulate the
4 is omitted, and hood 50 is supported at the
velocity of the'inwardly moving gases. In‘ Fig. 7
selected height above the ba?le ring 2 by the
is shown a ring 26 of a diameter enabling it to ?t
lugs 5|, secured at 52 to the vanes 2|, and rest
around the skirt'3 of the ba?ie ring 2. Bolts 21
ing on the spacers 53 surrounding the bolts 54
attached at spaced points to one face of-the ring
which ext .nd through the batlle ring and through
lugs 5|. By using spacers of selected height, the I
overlap of the skirt 3 with the vanes 2| is regu
In Figs. 15 and 16 is shown means by which the
velocity of the moving gases maybe regulated by
4. In an apparatus of the character described,
a tower of cylindrical form having spaced and
skirted annular ba?ie rings located within it, a
vertically movable shaft within the tower and
located concentrically of the rings, a plurality
of spaced conical hoods fixed on said shaft ~
pivotally moving the vanes located between the
whereby said hoods may be simultaneously raised
hood and the baiiie ring. In this construction,
or lowered with the shaft, means on the shaft
the height of the hood 55 above the ba?ie ring 2‘
for adjustably mounting each of vthe hoods
remains constant. Movable‘ vanes 56 are sup
ported on vertical vane shafts 51 extending‘be 10 thereon, and spaced radial vanes carried by the hoods' and movable with the hoods into or out
tween the bai’?e ring 2 and the hood 55. Attached
of the skirted portions of the annular rings.
to the inner part of each vane is a pin 58 engag
5. In an apparatus of the character described,
ing in a slot 59 in an adjusting spider 60 sup
a cylindrical tower, an annular baffle ring secured
ported for rotative movement on a hub 64 secured
on the shaft 4. An adjusting rod 6|, provided 15 in the tower, the inner edge of said ring being
provided with a vertically disposed skirt, a mov
, with an appropriate lock, is used to shift the
able conical hood located above the ring and
adjusting spider 60 to cause‘ it to simultaneously
having a plurality of spaced, radially extending
move the vanes to the desired angular position.
de?ecting vanes situated adjacent to its periph
I , The adjusting rod ,6l normally remains inside of
the tower I and is reached for adjustment through 20 eral edge, and means by which the spacing of the
hood from the ring may be regulated to control
any access door 62 provided in-the column.
the extent to which the skirt on said ring over
While we have described several embodiments
laps the vanes, said means including a vertically '
of the invention, it is obvious that numerous de
movable support for the hood and means by
partures may be made therefrom without depart
ing from the spirit of the invention. We there 25 which the hood is adjustable relative to said
fore do not restrict ourselves to the embodiments
6. In an apparatus of the character described,
shown, since the invention disclosed is broad
a tower or column through which a rising .gas
enough to cover all structures coming within the
?ow is directed against a descending flow of
scope of the annexed claims.
30 liquid, an annular baille ring'secured to the wall
What we claim is:
of the tower and contained within the tower, a
1. In an apparatus of the character described,
hood having a plurality of radial vanes located
a cylindrical tower or column having a stage
at vthe inner edge of the baiiie ring, said ring including an annular baille ring, a hood disposed
above the ring, said hood being provided with ' having a vertically disposed wall extending around
radially disposed vanes, and means whereby the 35 the vanes, said wall being composed of ?xed and
movable sections, and means by which the posi
relative spacing of the hood and baiiie ring and
tion of the movable section relative‘ to the fixed‘
the overlap of the vanes with the ba?le ring can
be varied to maintain efiicient contact velocities ,
between a gas ?ow through the tower and a de
section may be regulated to increase or decrease .
the e?ective area of said wall- -
scending liquid ?ow and with the wet surfaces ‘i0 '1.‘In a, device of they character described, a
tower or column, anannular baiile ring within
of the tower, ba?le ring and hood, said means
the tower or column, a vaned hood situated over
including a shaft on which the hood is mounted
the ring and adjustable relatively to the ring,
and means for bodily moving the shaft and the
hood carried thereby and including also means
and a- cone situated above the’hood and corre
by wthich the hood can be shifted relative to said 45 sponding substantially to the shape thereof, and
shaf .
2. In an apparatus of the character described,
a tower or column having a stage including an
annular baiiie ring, a conical hood disposed above
the ring, said hood having a plurality of depend
ent equally spaced radially disposed vanes, and
means by which the spacing of the. hood and the
ring and the overlap of the vanes in relation to
the ring may be varied to maintain e?‘lcient con
tact velocities between a gas flow ‘through the’
tower and a descending liquid ?ow and- wet sur
faces of the tower, said means including a mov
means by which the cone may be positioned at
selected distances from the hood.
8. In an apparatusof the character described,
a cylindrical tower or column through which a
rising gas flow is directed against a descending
?ow of vliquid, a plurality of spaced, horizontally
disposed, annular ba?ie rings secured to the inner
face of the tower and extending toward the center
of the tower, each of said rings having a central
opening surrounded by a vertical annular wall,
a centrally-disposed vertical shaft extending
through the openings in the several rings, said
shaft carrying a plurality of spaced conical hoods.
ably mounted support for the hood and adjusts..
means on the shaft for‘ adjustably mounting the ‘
ble means for securing the hood to the support.‘
hoods thereon, each hood being located near one
3. In an apparatus of the character described,
of the rings and‘ being adjustable on the shaft
a cylindrical tower having spaced, ?xed annular
relative to said ring, each hood having a plurality
ba?ie rings within it, a vertically movable support
of radial vanes near its outer edge and directed
carrying spaced hoods, each of said hoods being
downwardly toward the adjacent ring, and means
located adjacent to one of the baiile rings and
being adjustable relative to its support, each hood 65 for raising or lowering the shaft to bring the vanes into or out of the openings in the baiile rings to
being provided with a plurality of spaced deflect
a selected extent, said means including a cable
ing vanes, each of the ba?le rings having a de
attached at one end to the upper end of the shaft
pendent skirt, and means for raising or lowering
and connected-to wind-up means located-‘exter
the hoods and the baille rings-carried thereby
‘whereby the skirts on the baiile rings will in 70 nally of the tower.
crease or decrease the size of the openings between
the vanes and hoods to thereby maintain efficient
contact velocities between gas and liquid ?ows
proceeding oppositely through the tower.‘
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