Патент USA US2408722код для вставки
0a, 's, ‘1946. 2.408,72i w. B. ALTSHELER'I PNEUlATICALLY-OPERATED LIQUID-RECIRCULATING DEVICE ‘Filed July 1, 1944 Fig. 1 " Fig. 2 11 IO Fig.3 L INVENTOR. MLL/AM 5. 4L7§5HEL£Rr 2,408,?21 Patented Oct. 8, 1946 'MUNAITE'DVASTATQES mim- orrics PNEUMATICALLY-OPERATED LIQUID RECIRCULATING DEVICE ’ ‘William B. Altsheler, Louisville, Ky., assignor to Joseph E. Seagram & Sons, Inc.,- Shively, Ky., .a corporation of Indiana _ ~ Application ‘July 1, 1944, Serial No. 543,159 4 Claims. (01. 23-252) ' 2 1 This invention relates to a pneumatically op erated liquid recirculating device which is use ful for a variety of purposes, such as a gas ab sorber, a gas scrubber, extractor, etc. The principal object is to provide a novel, in expensive and simply constructed device for re circulating liquid by forcing it from a lower cham~ her into an upper chamber at intermittent inter upon the gas passes through .such pipe to the liquid in the upper chamber. Since the gas pres sure in‘ the lower chamberis thus released, vthe liquid in the upper chamber is free to drain into the lower chamber and, by making the drain large, drainage occurs rapidly. To avoid build ing up an objectionable gas pressure in the up per chamber, this gas is either condensed [at or discharged from the‘ top of the upper chamber. vals and permitting it to drain back into the When a' constant source of gas pressure is es lower chamber at intermediate intervals and for 10 tablished, it ‘will be appreciated that the device performing these operations automatically in an will operate automatically to force liquid at reg extremely simple manner. ular intermittent intervals from the lower cham Another important object is to provide a corn~ her‘ to the upper chamber and toy permit such pact device which, being capable of bringing gas liquid tav drain at intermediate intervals from into contact with a large wetted'surface area for a comparatively long time, is highly efficient in performing any of a variety of operations, such as gas scrubbing, gas absorbing and extracting. Speci?cally, the device comprises: an upper chamber; a lower chamber having upper, inter mediate and lower liquid levels and a pressure zone extending from the intermediate level up wardly to its top, the chamber being adapted to receive liquid up to its upper level; a drain plac- _ ing the bottom of upper chamber in open com munication with the lower chamber at its lower level below the pressure zone; means for build ing up a gas pressure in the pressure zone of the lower chamber so as to depress the liquid level the upper chamber back into the lower cham ber. Also by ?lling'both chambers with a‘pack ing material, such as short lengths of vglass tub; ing, the gas will be brought into contact with the large wettedjsurface area for relatively long pe riods of time.‘ For extraction purposes‘the tubing can be replaced with a packing'composed ‘of the material to be extracted. ‘ ’ ’ ' - ~ ‘ An‘einb‘odiment of the invention is illustrated in the accompanying drawing, wherein: > Figure 1 is a perspective of the device; Figures 2, 3 and 4 are schematic views indi cating different stages of operation; and V Figure 5 is a perspective of aglass tube‘ ele ment, with which either or both chambers of the 30 therein and thereby force liquid therefrom thru device'may be ?lled. ' > " ~ ' the drain into the upper chamber; a control As illustrated; the device is made of glass in tube extending from the top, of the pressure one more or less unitary assemblybut' it will be zone downwardly to the intermediate level and understood that it may be made of plastic, metal thence upwardly to the .bottom of the upper or other ‘suitable materials and may be fabri chamber, said tube being operativeywhen the 35 cated in separate parts to facilitate such assem depressed liquid in the lower chamber reaches bly rand disassembly as may be required in nor the intermediate level, to conduct the gas from mal use. The device comprises: an upper cham the lower chamber into the upper chamber and ber I; a lower‘chamberZ, having upper, inter thereby release the pressure in the-pressure zone mediate'and lower levels; as indicated in Fig 40 permitting the liquid in the upper chamber to ures 2-4, and a pressure. zone extending vfrom drain back into the lower chamber; and means associated with the upper chamber to. prevent the intermediate level upwardly to the top of the lowerchamber; and a relatively large'drain 3 the building up therein‘ of an undesirablev back extending downwardly from the bottom of the pressure. ‘ With this arrangement, the gas pressure can 45 upper chamber to the lower level of the lower be built up in the pressurezone either by boiling ' chamber. The lower chamber has a valved inlet 4 by which it may be connected to a suitable the liquid therein or by feeding a stream of ; air 'source of air or gas pressure which is schemat or gas under pressure thereto. As the ‘gas pres ically indicatedat 5. This connection ,is closed sure builds up in the lower chamber pressure zone, the liquid level therein is depressed, dis~ 50 when the gas pressure is formed by boiling liquid in the lower chamber, a heat source 6, being in placing liquid which passes upwardly thru the drain into the upper chamber. When the liquid is depressed to the ‘intermediate level, the gas pressure becomes effective to blow the re maining liquid out of the control pipe where dicated for this purpose. The gas inlet 4 may be located at any point, except it should not 'be so positioned as to discharge into the drain 3. 55 Where the device is to be used for bringing gas 2,408,721 3 into contact with the liquid, the inlet 4 prefer ably is placed near the bottom so that the in 4 her there will, of course, be a tendency to build up a vapor or back pressure, since the valved coming gas will bubble upwardly thru the liquid outlet 1 is closed. as it travels toward the pressure zone. por or back pressure in the upper chamber would If left uncontrolled, the va The upper chamber has a valved outlet 1 at 5 soon render the device inoperative. Where it its top from which it may discharge gas into the is not desirable to vent the vapor from the upper atmosphere or into a suitable gas receiving sys chamber, it becomes necessary to condense it to tem which is schematically indicated at 8. This avoid objectionable back pressure and this may connection is closed when the gas pressure is be done by operating the condensing arrange— formed by boiling liquid in the lower chamber 10 ment shown. and such gas or vapor is condensed by a cooling Having described my invention I claim: coil 9 extending around that portion of the out 1. A pneumatically operated liquid recirculat let 1 between its valve and the adjacent part of ing device for gas absorbing, gas scrubbing and the upper chamber. The cooling coil 9 may be like purposes comprising: means providing an connected to any suitable source of refrigerant upper chamber; means providing .a lower cham I0. Naturally any other suitable vapor condens ber adapted to receive an initial charge of liquid ing arrangement may be employed. up to a predetermined upper level; a drain tube A control tube H, preferably of a diameter connecting the lower part of the upper cham which is relatively small in comparison to the ber to the lower portion of the lower chamber; diameter of the drain 3, communicates with the and a control tube, of small diameter in rela— lower chamber at its upper level and extends tion to the diameter of the drain tube, extending downwardly therefrom to the intermediate level from the lower chamber adjacent its upper level and thence upwardly to communicate with the downwardly to an intermediate elevation above upper chamber at its bottom. the lower end of the drain tube and thence up In operation as an absorber or scrubber, both wardly into the lower part of the upper chamber, lower and upper chambers are preferably ?lled said control tube also being adapted to receive with a multitude of glass tube elements l2, while liquid of said initial charge up to a level corre the lower chamber is ?lled with water or other sponding to said predetermined upper level; the gas scrubbing liquid up to its upper level. The upper part of said lower chamber being con gas to be scrubbed is conducted thru the inlet 30 structed and arranged to receive a progressive 4 and the rate of ?ow adjusted to provide the accumulation of gas in its upper portion to force proper or desired rate of recirculation. This said initial charge of liquid through the drain gas bubbles up thru the liquid and in so doing and control tubes into the upper chamber as it contacts the large surface area provided by the simultaneously depresses the liquid level in both glass elements l2. The gas collects in the pres 35 the lower chamber and the control tube whereby, sure zone of the lower chamber and as it col when the depressed level reaches said interme lects, it depresses the liquid level in that cham diate elevation, the gas accumulation immedi ber and also in the control tube H. The liquid ately becomes e?ective to flush the liquid remain displaced by this action passes upwardly through ing in the control tube upwardly into the upper the drain 3 and tube l l into the upper chamber. 40 chamber and to escape from the lower chamber When the liquid is depressed to the intermediate through the control tube into the upper chamber ‘ thereby releasing the gas pressure in’ the lower level, the gas pressure becomes effective to blow the remaining liquid in control tube ll upwardly chamber and permitting the liquid in the upper into the upper chamber thereby permitting the chamber automatically to gravitate rapidly back gas to flow into the bottom of the upper cham 45 through said drain tube into the lower chamber ber where it. again bubbles upwardly through and back into the control tube and thus recon dition the device automatically for a repetition the liquid and around the large surface area provided in the upper chamber by the elements [2. The gas pressure in the pressure Zone is thus of its operation. ~ 2. The device of claim 1 wherein: the lower released; hence the water from the upper cham 50 chamber has, adjacent its bottom, an inlet to ber drains rapidly thru the drain 3 and again ?lls receive gas for gas accumulation purposes; and the lower chamber up to its upper level.v In this the upper chamber has, adjacent its top, an out way the device reconditions itself for a repeti let for discharging the gas received from the tion of the same operation. lower chamber. Where the device is to be used in a cold ex 3. The device of claim 1 wherein: means are 55 traction operation, the same operation takes associated with the lower chamber to boil the place except the solid matter containing the ele liquid therein and thereby build up a vapor pres ment to be extracted may be placed in either or sure for gas accumulation purposes; and means both upper and lower chambers in place of the are associated with the upper chamber to con glass elements l2, while air or any desired gas 60 dense the vapors received from the lower cham may be fed into the inlet 4. ber. When a hot extraction is to be performed both 4. The device of claim 1 wherein: the lower inlet and outlet valve connections may be closed chamber is provided with a multitude of gas con and heat applied to the lower chamber to boil the tacting elements presenting extensive gas com liquid therein. Ordinarily, as the vapor pres 65 tacting surfaces which are progressively sub sure is built up in the pressure zone, the liquid merged as the liquid in the lower chamber rises will be displaced into the upper chamber and to its uppermost level and which are progres when the depressed liquid reaches the interme sively exposed to the atmosphere of such cham diate level, the vapor pressure will be released ber as the liquid therein falls from its uppermost through tube H into the upper chamber. When 70 level. such vapor reaches the top of the upper cham WM. B. ALTSHELER.