US3274755A - Apparatus for the adsorptive recovery of solvents - Google Patents
Apparatus for the adsorptive recovery of solvents Download PDFInfo
- Publication number
- US3274755A US3274755A US204176A US20417662A US3274755A US 3274755 A US3274755 A US 3274755A US 204176 A US204176 A US 204176A US 20417662 A US20417662 A US 20417662A US 3274755 A US3274755 A US 3274755A
- Authority
- US
- United States
- Prior art keywords
- solvent
- elevation
- casing
- air
- charcoal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002904 solvent Substances 0.000 title claims description 79
- 238000011084 recovery Methods 0.000 title description 26
- 230000000274 adsorptive effect Effects 0.000 title description 3
- 239000003610 charcoal Substances 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000012809 cooling fluid Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 claims 6
- 229940106265 charcoal Drugs 0.000 description 19
- 238000004140 cleaning Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 12
- 238000005108 dry cleaning Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000004753 textile Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000010981 drying operation Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- CZMRCDWAGMRECN-UHFFFAOYSA-N 2-{[3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy}-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound OCC1OC(CO)(OC2OC(CO)C(O)C(O)C2O)C(O)C1O CZMRCDWAGMRECN-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 241001591024 Samea Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 235000020004 porter Nutrition 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000008786 sensory perception of smell Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
- D06F43/08—Associated apparatus for handling and recovering the solvents
- D06F43/086—Recovering the solvent from the drying air current
Definitions
- This invention relates to apparatus for the recovery of volatile solvents, especially useful in connection with dry-cleaning and degreasing machines.
- Such dry-cleaning machines comprise a Washing drum into which a batch of articles to be cleaned is placed and which is filled with one or more heavy volatile solvents (such as a chlorinated solvent). This drum is rotated to stir the articles in the solvent.
- This stirring operation is usually continued for 10 to minutes.
- the solvent contained in the drum is usually subjected to a first recovery step. For this purpose it is wrung and drained out of the articles being cleaned, a step which is quite short and only takes about 2 to 5 minutes.
- this wringing operation normally only yields a return of about 60 to 75% of the quantity of solvent initially used. An appreciable amount of solvent remains after the wringing operation in the washing drum and in the material being cleaned.
- a second solvent recovery operation is generally performed.
- this second step is generally performed simultaneously with the drying of the articles in the drum of the cleaning machine.
- This drying operation is produced by a blast of hot air at a temperature of over 190 F., and sometimes at 210 to 230 F., discharged through the mass of clothes being cleaned, and made to circulate in a closed circuit in the cleaning machine. This air becomes progressively richer in solvent vapours collected from the remaining solvent in the drum and articles undergoing cleaning.
- the solvent vapours are condensed by passing the hot, solvent-vapour-laden air, through a condenser usually provided as part of the cleaning machine.
- This last described solvent recovering step usually lasts about twenty minutes. It generally enables the recovery of about 10 to of the amount of solvent originally used, but its rate of efficiency drops off very quickly beyond the point Where about 5 to 10% of the original amount of solvent has been recovered. As a final result, even if this second recovery operation is continued for quite a long time, the cleaning machine and articles still contain about 5 to 20%, or even as much as of the original amount of solvent.
- the hot drying operation with solvent recovery by condensation cannot be applied to certain types of goods, including articles made from heat-sensitive synthetic fibre, furs, and certain grades of felt, so that, with articles of these and similar categories, the residual amount of solvent retained after the cleaning corresponds to what is left after the wringing and draining operations, that is, about 25 to The un-recovered solvent remaining in the drum and cleaned goods, whatever its amount, is discharged into the atmosphere by a blast of cool air discharged through the mass of clothes in the drum.
- the primary object of the present invention is to provide a recovery system which will achieve a substantially full recovery of the solvent including the fractions currently vented to atmosphere and retained in the cleaned articles. Another object is to accomplish such full recovery without substantially increasing the total time of the cleaning process.
- the invention therefore provides a way of recovering volatile solvents applicable both to solvent present in an enclosure and that retained in a batch of textile and similar articles, which comprises discharging air into said enclosure and/or through said articles, then passing the solvent-laden air over active carbon to absorb the solvent vapours from the air blast, and regenerating the active carbon, for example, with steam at 212220 F., to recover the absorbed solvent.
- the air to be discharged is at an initial temperature lower than 100 F.
- a solvent recovery operation using active carbon according to the invention as applied to the dry cleaning of clothes and other textile articles may be performed according to any one of the following ways, as related to the conventional steps of a dry cleaning process.
- the air discharged, according to the invention, into the enclosure and/or overthe articles being cleaned-in order to carry away the solvent vapours preferably is cool, or relativelycool air, especially at ambient temperature, thereby saving expense in fuel or other heating energy.
- a further object of the invention is to provide a device for recovering solvent in which the recovery is possible within a single compact apparatus and without transferring the absorbent material from one container to another.
- a further object of the invention is to provide a system with a relatively thin-walled container, which requires no safety valve.
- Still another object of the invention is to provide an arrangement in which a single coil serves a number of diiferent purposes.
- An additional object of the invention is to provide an arrangement for cooling the solvent-vapor-laden air before it contacts the absorbent material so as to increase the efficiency of the apparatus.
- Solvent recovery apparatus may comprise a sealed enclosure containing the following component units:
- An absorption unit having one or more beds of activated carbon through which the solvent-laden air blast is passed.
- a condenser for condensing said water vapour together with the solvent vapours entrained with it.
- a separator unit for separating the condensation water from the recovered solvent.
- the enclosure is in the form of a vertical, preferably cylindrical, vessel having the absorption unit mounted within the upper part of it, and the solvent-charged air is made to flow upwardly through said absorption unit, the purified air being discharged through one or more outlets at the top of the vessel and means being provided for discharging steam at selected periods through the absorption unit in the reverse, downward direction.
- Means are provided for recovering the solvent in the bottom of the vessel after said solvent has successively passed through a condensation unit positioned below the absorption unit and a cooling and separating unit below the condenser.
- the apparatus is to be used in connection with a dry cleaning machine, the, above described apparatus is preferably, directly and permanently connected with such machine.
- FIG. 1 shows in cross-section one form of device embodying the invention
- FIG. 2 is a similar view of a modified form
- FIG. 3 is a cross-section on the line 3-3 of FIG. 2, with the pipes omitted.
- FIG. 4 is a perspective view of the baffle unit
- FIG. 5 shows in elevation a modified form of coil
- FIG. 6 is a plan view thereof.
- the apparatus shown comprises an upstanding cylindrical vessel 1 made, for instance, from galvanized steel sheet about 3 to 4 mm. thick, and providing a sealed enclosure.
- an absorption unit comprising a mass of active charcoal 2 arranged upon a wire mesh or perforated screen 3 and having another wire mesh 4 extending over its upper surface.
- Steam discharge and distributing piping 5 is mounted above the absorption unit for regeneration of the activated charcoal.
- a condenser coil 6 is mounted beneath the absorption unit for condensing the steam and solvent vapours. Underlying the condenser 6 is a shallow receiver or tray for collecting the condensed products, and cooling them off somewhat.
- the receiver has a central downwardly extending outlet pipe plunging at its lower end into a separator 8.
- the vessel 1 rests on a stable base 9.
- the air blast laden with solvent vapours which may be derived from the washing drum of a dry cleaning machine, is delivered into the vessel by a conduit 10 having a discharge fan 10a connected in it.
- the outlet of the fan 10a is connected at 13a with the enclosure 1, preferably below the absorption unit 2-3-4, so that the solvent-charged air will flow upwardly as indicated by the flow-path A through the bed 2 of active charcoal.
- the air stripped of its solvent content by absorption in the charcoal bed (said absorption being usually better as the stream temperature is lower) is then discharged through the top outlet 14a of a cover 12 and up a vent discharge conduit 11. It is found that the discharge air from apparatus according to the invention has a solvent concentration so low that the outlet conduit 11 can be vented directly to the surrounding atmosphere without requiring an elevated stack.
- the discharge air is quite odorless.
- the inlet conduit 10 delivering the solvent-charged air and the outlet conduit 11 are each provided with one or more valves 13, 14, both of which are opened during the absorption stage of the process.
- a side outlet 17 tapped from the outlet conduit 11 may serve to determine, by analysis of the discharge air or simply by the sense of smell, the fact that the charcoal bed is in need of regeneration.
- valves 13 and 14 are closed and valve 5a is opened to connect the steam distributor 5 with a source of steam, not shown, at a pressure of say 3 kg. per sq. cm.
- the flow-path of the steam is shown at B.
- an inlet valve 15 is opened for delivering cooling water into the condenser coil 6. The water flows through the coil 6 and is discharged by way of pipe 16.
- the condensed water and solvents flow along the path D into the tank 8 of a separator unit by way of the funnel-like receiver 7. Since the solvents are heavier than water, they settle to the bottom of the tank 8 while the water collects at the top. The water is discharged by way of water outlet 19 connected with the upper part of tank 8 to waste while the solvents are syphoned from the bottom of the tank through a syphon 20a into a solvent receiver tank.
- FIGS. 2 to 4 there is a shell or tank 21 formed of a vertical cylinder, a body 22 of absorptive material such as activated charcoal in one or more layers, a steam distributing pipe 25, a heat exchanger formed of one or more coils 26, a collector 27 and a separator-decanter 28 with outlet conduits 19 and 20.
- the apparatus is connected to a blower 10 :by a pipe 29 in which is a valve 13.
- the intake of blower 10 is connected to a pipe 50 which, by valves 51, 51' can be connected either to the discharge of a dry cleaning device or to the atmosphere.
- Pipe 29 opens into the tank 21 at 30, at a point below at least a part of the heat exchanger 26 and preferably at or below the bottom thereof.
- Heat exchanger 26 has an inlet pipe 31 with a drain valve 35 and an outlet pipe 32.
- Pipe 31 can be connected either to the steam supply by opening valve 33 or to a pump and supply of cold water by opening valve 34.
- Outlet pipe 32 can be connected by opening valves 36 or 37 to the steam or cold water respectively.
- the heat exchanger is preferably composed of a plurality of concentric coils supported in holes in distributing plates 39 which are arranged upright in radial planes and are spaced apart at their inner edges. In the center, across the top edges of the inner parts of the plates, is
- a disc 40 to block the central part of the interior of the drum.
- These plates act to cause the incoming vapor-laden air to be distributed through the cross-section of the casing, and to receive a swirling motion, after which the air will pass upwardly and make good contact with the coil 26, while disc 40 prevents escape of air upwardly through the center out of contact with the coils.
- valve 13 is opened (along with valves 34 and 37, so as to feed a coolant to coil 26) and blower is started.
- the incoming vapor-laden air passes upward through and in heat exchange relation with the coils, so that it is cooled substantially and the elficiency of the absorptive material is thereby improved.
- water at 0 air entering at 60 C. can be cooled to C. by this arrangement.
- valves 13, 49 and 51 are closed and steam is admitted into diffuser 25. This steam passes downward through the charcoal and vaporizes the solvent. The steam and solvent are condensed by cooling of the heat exchanger 26, fall onto collector 27 and pass to separator 28.
- valves 34, 37 are closed, and valve is opened to drain the coil and then closed.
- Valves 13, 33, 36, 49 and 51' are opened and pump or blower 10 is star-ted. This then blows pure air into the casing, which blows up past coil 26 and is heated thereby to a sufiicient degree to dry the charcoal, which can be done in a few minutes, so that the cycle of operation is considerably shortened. Then the opera-ting cycle is repeated.
- the solvent recovery apparatus of the invention includes the hollow casing 21 which is formed at a given elevation with the outlet means 49 which is capable of being opened and closed.
- the blower 10 together with the valve 13 and opening 30 form an inlet means communicating with the interior of casing 21 at an elevation substantially lower than the outlet means 49.
- the valve 51 and 51' form a pair of means both communicating with the inlet means 10, 13, 30 through the conduit 50 and this pair of means is alternately operable for alternately introducing solventcarrying air and pure air, respectively, into the casing 21 through the inlet means.
- the body 22 of activated charcoal is situated in the interior of casing 21 to define a flow path through which air must pass before reaching the outlet means 49.
- the heat exchanger means 26 is situated in the casing 21 beneath the body of charcoal 22.
- the valves 33 and 34 respectively form together with the valves 36 and 37 a pair of means which communicate with the heat exchanger means 26 for alternately circulating therethrough a heating fluid and a cooling fluid, respectively.
- the conduit 25 forms a steam conduit means for directing through the body of charcoal 22 steam which passes downwardly therethrough.
- elements 27 and 28 form together with the conduits 19 and 20 a separating means situated in the casing at an elevation lower than the heat exchanger means 26 to collect condensate therefrom and separate the condensate into its different liquid components.
- FIGS. 5 and 6 show a heat exchanger formed of several S-shaped coils 4 with vanes for improving the exchange of heat.
- valve 36 It would obviously be possible, in the form of FIGS. 2 to 4, to supply steam by valve 36 and to exhaust it by either valve 33 or valve 35, if desired.
- the solvent recovery apparatus of the invention has many important advantages especially in connection with dry-cleaning plants.
- the total cost of such a solvent recovery apparatus as described herein is lower than the cost of erecting a discharge stack 15 meters high or taller such as would he usually required in the absence of such apparatus.
- the total time required for the dry cleaning operation and recovery of solvents according to the invention may be made somewhat shorter, about from 3 to 8 minutes, than in the absence of the improved recovery plant, since the hot-drying and condensation stage of the conventional cleaning process may be considerably shortened. This constitutes an additional economic advantage to the invention.
- the clothes or other textile or the like goods are practically free from the smell of solvent present -in conventionally cleaned clothes and their temperature on discharge from the cleaning plant is lower.
- the apparatus according to the invention is simple and inexpensive to manufacture, and not very space consuming, easy to transport, install and operate and can readily be combined into an integral unit with conventional automatic dry cleaning machines and/or known solvent recovery devices.
- the fan 10 or 10a may as well be put on the top of the cylindrical vessel, and the air laden with solvent vapours be drawn into the vessel instead of blown into it.
- the entire vessel is then under a slight depression (less than atmospheric pressure), which has the consequence that there are no more losses of air laden with solvent occuring through small leaks which may exist in the apparatus.
- the change of position of the fan 10' or 10a does not include any change of position of the inlets 13a or 30.
- the hydraulic valve constituted by the separator-decantor 28 is constructed in such a way that it may function as well under pressure as under a depression.
- Solvent recovering apparatus comprising, in combination, a hollow casing provided at a given elevation with an outlet means capable of being opened and closed; inlet means communicating with the interior of said casing at a second elevation substantially lower than said given elevation; a first pair of means both communicating with said inlet means and alternately operable for alternately introducing solvent-carrying air and pure air, respectively, into said casing through said inlet means; a body of activated charcoal situated in the interior of said casing at an elevation lower than said given elevation but higher than said second elevation and defining a flow path through which air must pass before reaching said outlet means; heat exchanger means situated in said casing beneath said body of charcoal but at an elevation higher than said second elevation; a second pair of means communicating with said ,heat exchanger means for alternately circulating there through a cooling fluid and a heating fluid, respectively; steam conduit means communicating with the interior of said casing at an elevation higher than said body of charcoal for directing steam downward- 1y through the latter; valve means in said steam conduit means for opening and closing the latter; and
- valve means communicates with said heat exchanger means for emptying heating fluid therefrom before cooling fluid is circulated therethrough and cooling fluid therefrom before heating fluid is circulated therethrough.
- said heat exchanger means includes a plurality of concentric coils of tubing and a plurality of plates extending radially with respect to and distributed about the common axis of said coils of tubing and formed with openings through which said coils of tubing pass, said plates defining spaces in which air introduced in said inlet means into said casing is distributed across the interior of said casing While flowing upwardly past said heat exchanger means to said body of charcoal.
- heat exchanger means includes a plurality of banks of finned tubing respectively situated at different elevations between saidbody of charcoal and said second elevation;
- both of said second pair of means circulate fluid through said heat exchanger means from a lower elevation to a higher elevation.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treating Waste Gases (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR412203 | 1958-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3274755A true US3274755A (en) | 1966-09-27 |
Family
ID=8632813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US204176A Expired - Lifetime US3274755A (en) | 1958-07-10 | 1962-06-21 | Apparatus for the adsorptive recovery of solvents |
Country Status (3)
Country | Link |
---|---|
US (1) | US3274755A (de) |
DE (1) | DE1288564B (de) |
GB (1) | GB887677A (de) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3368325A (en) * | 1964-04-02 | 1968-02-13 | Sanders James | Apparatus and method for recovering solvent used in industrial processes |
US3616848A (en) * | 1966-04-01 | 1971-11-02 | Sulzer Ag | Support means for heat transfer device |
US3742567A (en) * | 1967-03-28 | 1973-07-03 | Sulzer Ag | Method of making a heat transfer device |
US3883325A (en) * | 1972-03-23 | 1975-05-13 | Boewe Boehler & Weber Kg Masch | Method of and apparatus for the recovery of solvent gases from an air stream |
US4083704A (en) * | 1975-09-01 | 1978-04-11 | Hans Knopf | Device for the separation of the cleaning agent from the exhaust air of dry cleaning machines |
US4242111A (en) * | 1979-03-16 | 1980-12-30 | Andrew Arends | Compressed air dryer |
US4323372A (en) * | 1979-12-17 | 1982-04-06 | Ciba-Geigy Corporation | Process for recovering nitrobenzene, dichlorobenzene and/or trichlorobenzene from exhaust gases, in particular spent air |
US4440549A (en) * | 1982-04-13 | 1984-04-03 | Amcec Corporation | Method for reducing peak vapor emissions in solvent recovery systems |
US4859216A (en) * | 1987-03-27 | 1989-08-22 | Ameg France | Process and equipment for the treatment and recovery of solvent vapors by recycling on active charcoal |
US5213593A (en) * | 1989-01-06 | 1993-05-25 | Pall Corporation | Pressure swing sorption system and method |
US5308457A (en) * | 1991-04-05 | 1994-05-03 | Catalytica, Inc. | Self-contained system for controlling gaseous emissions from dilute organic sources and a process for using that system |
US6458185B1 (en) * | 2001-03-29 | 2002-10-01 | Celanese Acetate Llc | Recovery of volatile organic compounds from carbon adsorber beds |
US20050204478A1 (en) * | 2004-03-16 | 2005-09-22 | Middleton Richard G | Method for cleaning textile absorbers |
US20130167558A1 (en) * | 2010-05-28 | 2013-07-04 | Electrolux Laundry Systems Sweden Ab | Cooling device and method therefore for co2 washing machines |
US11130091B2 (en) * | 2019-07-11 | 2021-09-28 | Durr Systems, Inc. | Apparatus and method for solvent recovery from drying process |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3803804A (en) * | 1970-11-24 | 1974-04-16 | Hitachi Ltd | Apparatus for desulfurization of exhaust gas |
DE4319177C2 (de) * | 1992-07-31 | 1996-11-07 | C C C Ltd | Verfahren zum Reinigen von Textilien |
Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1420613A (en) * | 1922-06-20 | Method of volatilizing | ||
US1453215A (en) * | 1922-02-18 | 1923-04-24 | Gasoline Recovery Corp | Method of volatilizing, distilling, or separating absorbed vapors |
US1471705A (en) * | 1917-10-03 | 1923-10-23 | Hollis P Porter | Apparatus for treating fresh petroleum |
US1742247A (en) * | 1926-05-28 | 1930-01-07 | Rech S Et D Expl S Petrolifere | Process for the separation or recovery of gases and vapors by solid adsorbents |
US1797029A (en) * | 1928-10-04 | 1931-03-17 | Gen Electric | Condenser for refrigerating systems |
US1861158A (en) * | 1930-01-06 | 1932-05-31 | Hilger George | Air conditioning system |
US2029890A (en) * | 1934-12-01 | 1936-02-04 | Gen Electric | Condenser for refrigerating machines |
US2070204A (en) * | 1935-03-14 | 1937-02-09 | American Laundry Mach Co | Liquid seal vent |
US2087411A (en) * | 1934-01-10 | 1937-07-20 | Frederick L Maytag | Means for condensing and refining exhaust gases |
US2108730A (en) * | 1934-09-29 | 1938-02-15 | Suteliffe Edgar Rouse | Adsorption apparatus |
US2114776A (en) * | 1934-05-02 | 1938-04-19 | Prosperity Co Inc | Dry cleaning machine |
GB495656A (en) * | 1937-06-28 | 1938-11-17 | Alexander Howard Tod | Improvements relating to apparatus for recovering volatile solvents from solvent-laden air such as is derived from degreasing plants and the like |
US2155853A (en) * | 1937-03-29 | 1939-04-25 | Pease Anthony Equipment Compan | Method of purifying flue gases |
US2160831A (en) * | 1939-03-29 | 1939-06-06 | Colby | Method of and apparatus for preventing damage to cargo in cargo compartments |
US2181672A (en) * | 1936-03-25 | 1939-11-28 | Sutcliffe Speakman & Company L | Adsorbent filter |
US2216389A (en) * | 1938-01-13 | 1940-10-01 | Centrifix Corp | Extractor |
US2330655A (en) * | 1941-01-17 | 1943-09-28 | Zucker Jacques | Plant for recovery of volatile oil and grease solvents |
US2428885A (en) * | 1943-06-25 | 1947-10-14 | Chemical Developments Corp | Method of ventilation including the removal of solvent vapor by adsorption |
US2642951A (en) * | 1949-11-02 | 1953-06-23 | Orlo C Norton | Dehydrator |
US2660869A (en) * | 1951-10-23 | 1953-12-01 | Aurora Res Ind Inc | Dry cleaning apparatus |
US2693946A (en) * | 1951-02-05 | 1954-11-09 | Simpson Herbert Corp | Method of and apparatus for separating dust from water or other liquids |
US2760594A (en) * | 1953-04-03 | 1956-08-28 | Union Carbide & Carbon Corp | Activated carbon adsorbers |
US2765868A (en) * | 1956-10-09 | Methods of and apparatus for removing liquid | ||
US2818133A (en) * | 1955-11-04 | 1957-12-31 | Celanese Corp | Solvent recovery |
US3095284A (en) * | 1960-04-08 | 1963-06-25 | Res Dev Co | Low temperature process of dry cleaning textiles |
US3104936A (en) * | 1959-02-06 | 1963-09-24 | Max Boehler And Ferdinand Webe | Process for the chemical cleaning of textiles |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1595681A (en) * | 1919-12-06 | 1926-08-10 | Gasoline Recovery Corp | Process for the recovery of hydrocarbon vapors and derivatives thereof |
DE608464C (de) * | 1929-12-12 | 1935-01-24 | Carbo Norit Union Verwaltungs | Vorrichtung zur Ausnutzung der Waerme von Abgasen aus Adsorptionsprozessen |
DE561179C (de) * | 1930-05-02 | 1932-10-12 | Metallgesellschaft Ag | Verfahren zur Gewinnung von gas- oder dampffoermigen Stoffen aus Gas-, Dampf- oder Gasdampfgemischen durch Bindung an Adsorptionsmittel |
US1905900A (en) * | 1931-04-21 | 1933-04-25 | Roessler & Hasslacher Chemical | Process for vapor recovery |
FR740839A (fr) * | 1931-08-01 | 1933-02-01 | Rech S & D Expl S Petroliferes | Procédé pour la récupération de gaz ou vapeurs à l'aide de matières adsorbantes solides avec récupération de calories par accumulation |
DE704350C (de) * | 1937-11-17 | 1941-03-28 | Herrmann Gebr | Verfahren zum Wiederbeleben von Adsorptionsmitteln |
-
1959
- 1959-07-07 GB GB23304/59A patent/GB887677A/en not_active Expired
- 1959-07-09 DE DE1959S0063843 patent/DE1288564B/de active Pending
-
1962
- 1962-06-21 US US204176A patent/US3274755A/en not_active Expired - Lifetime
Patent Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1420613A (en) * | 1922-06-20 | Method of volatilizing | ||
US2765868A (en) * | 1956-10-09 | Methods of and apparatus for removing liquid | ||
US1471705A (en) * | 1917-10-03 | 1923-10-23 | Hollis P Porter | Apparatus for treating fresh petroleum |
US1453215A (en) * | 1922-02-18 | 1923-04-24 | Gasoline Recovery Corp | Method of volatilizing, distilling, or separating absorbed vapors |
US1742247A (en) * | 1926-05-28 | 1930-01-07 | Rech S Et D Expl S Petrolifere | Process for the separation or recovery of gases and vapors by solid adsorbents |
US1797029A (en) * | 1928-10-04 | 1931-03-17 | Gen Electric | Condenser for refrigerating systems |
US1861158A (en) * | 1930-01-06 | 1932-05-31 | Hilger George | Air conditioning system |
US2087411A (en) * | 1934-01-10 | 1937-07-20 | Frederick L Maytag | Means for condensing and refining exhaust gases |
US2114776A (en) * | 1934-05-02 | 1938-04-19 | Prosperity Co Inc | Dry cleaning machine |
US2108730A (en) * | 1934-09-29 | 1938-02-15 | Suteliffe Edgar Rouse | Adsorption apparatus |
US2029890A (en) * | 1934-12-01 | 1936-02-04 | Gen Electric | Condenser for refrigerating machines |
US2070204A (en) * | 1935-03-14 | 1937-02-09 | American Laundry Mach Co | Liquid seal vent |
US2181672A (en) * | 1936-03-25 | 1939-11-28 | Sutcliffe Speakman & Company L | Adsorbent filter |
US2155853A (en) * | 1937-03-29 | 1939-04-25 | Pease Anthony Equipment Compan | Method of purifying flue gases |
GB495656A (en) * | 1937-06-28 | 1938-11-17 | Alexander Howard Tod | Improvements relating to apparatus for recovering volatile solvents from solvent-laden air such as is derived from degreasing plants and the like |
US2216389A (en) * | 1938-01-13 | 1940-10-01 | Centrifix Corp | Extractor |
US2160831A (en) * | 1939-03-29 | 1939-06-06 | Colby | Method of and apparatus for preventing damage to cargo in cargo compartments |
US2330655A (en) * | 1941-01-17 | 1943-09-28 | Zucker Jacques | Plant for recovery of volatile oil and grease solvents |
US2428885A (en) * | 1943-06-25 | 1947-10-14 | Chemical Developments Corp | Method of ventilation including the removal of solvent vapor by adsorption |
US2642951A (en) * | 1949-11-02 | 1953-06-23 | Orlo C Norton | Dehydrator |
US2693946A (en) * | 1951-02-05 | 1954-11-09 | Simpson Herbert Corp | Method of and apparatus for separating dust from water or other liquids |
US2660869A (en) * | 1951-10-23 | 1953-12-01 | Aurora Res Ind Inc | Dry cleaning apparatus |
US2760594A (en) * | 1953-04-03 | 1956-08-28 | Union Carbide & Carbon Corp | Activated carbon adsorbers |
US2818133A (en) * | 1955-11-04 | 1957-12-31 | Celanese Corp | Solvent recovery |
US3104936A (en) * | 1959-02-06 | 1963-09-24 | Max Boehler And Ferdinand Webe | Process for the chemical cleaning of textiles |
US3095284A (en) * | 1960-04-08 | 1963-06-25 | Res Dev Co | Low temperature process of dry cleaning textiles |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3368325A (en) * | 1964-04-02 | 1968-02-13 | Sanders James | Apparatus and method for recovering solvent used in industrial processes |
US3616848A (en) * | 1966-04-01 | 1971-11-02 | Sulzer Ag | Support means for heat transfer device |
US3742567A (en) * | 1967-03-28 | 1973-07-03 | Sulzer Ag | Method of making a heat transfer device |
US3883325A (en) * | 1972-03-23 | 1975-05-13 | Boewe Boehler & Weber Kg Masch | Method of and apparatus for the recovery of solvent gases from an air stream |
US4083704A (en) * | 1975-09-01 | 1978-04-11 | Hans Knopf | Device for the separation of the cleaning agent from the exhaust air of dry cleaning machines |
US4242111A (en) * | 1979-03-16 | 1980-12-30 | Andrew Arends | Compressed air dryer |
US4323372A (en) * | 1979-12-17 | 1982-04-06 | Ciba-Geigy Corporation | Process for recovering nitrobenzene, dichlorobenzene and/or trichlorobenzene from exhaust gases, in particular spent air |
US4440549A (en) * | 1982-04-13 | 1984-04-03 | Amcec Corporation | Method for reducing peak vapor emissions in solvent recovery systems |
US4859216A (en) * | 1987-03-27 | 1989-08-22 | Ameg France | Process and equipment for the treatment and recovery of solvent vapors by recycling on active charcoal |
US5213593A (en) * | 1989-01-06 | 1993-05-25 | Pall Corporation | Pressure swing sorption system and method |
US5308457A (en) * | 1991-04-05 | 1994-05-03 | Catalytica, Inc. | Self-contained system for controlling gaseous emissions from dilute organic sources and a process for using that system |
US6458185B1 (en) * | 2001-03-29 | 2002-10-01 | Celanese Acetate Llc | Recovery of volatile organic compounds from carbon adsorber beds |
WO2002078819A1 (en) * | 2001-03-29 | 2002-10-10 | Celanese Acetate Llc | Recovery of volatile organic compounds from carbon adsorber beds |
US20050204478A1 (en) * | 2004-03-16 | 2005-09-22 | Middleton Richard G | Method for cleaning textile absorbers |
US20070028396A1 (en) * | 2004-03-16 | 2007-02-08 | Middleton Richard G | Cleaning fluid and methods |
US8100987B2 (en) | 2004-03-16 | 2012-01-24 | Jane D. Middleton | Cleaning fluid and methods |
US20130167558A1 (en) * | 2010-05-28 | 2013-07-04 | Electrolux Laundry Systems Sweden Ab | Cooling device and method therefore for co2 washing machines |
US11130091B2 (en) * | 2019-07-11 | 2021-09-28 | Durr Systems, Inc. | Apparatus and method for solvent recovery from drying process |
US11731073B2 (en) | 2019-07-11 | 2023-08-22 | Durr Systems, Inc. | Apparatus and method for solvent recovery from drying process |
Also Published As
Publication number | Publication date |
---|---|
GB887677A (en) | 1962-01-24 |
DE1288564B (de) | 1969-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3274755A (en) | Apparatus for the adsorptive recovery of solvents | |
US4513590A (en) | Combination filter apparatus for use with a dry cleaning machine | |
US2198412A (en) | Removal and recovery of solvent | |
USRE19986E (en) | Dry cleaning apparatus | |
US4287138A (en) | Direct contact gaseous to liquid heat exchange and recovery system | |
KR101695473B1 (ko) | 배가스의 폐열회수 및 탈습겸용 장치 | |
US3089250A (en) | Method of recovering a volatile organic solvent from an absorbent with steam | |
US4817296A (en) | Dry-cleaning machine for textiles | |
US2910137A (en) | Method and apparatus for the recovery of solvent vapors | |
US3242589A (en) | Apparatus for reclaiming solvent from used filter cartridges | |
US2674338A (en) | Method and apparatus for the recovery of nitrogen oxides from gaseous mixtures | |
US3256613A (en) | Fabric treatment | |
US1753067A (en) | Recovery of adsorbable substances | |
US2322469A (en) | Apparatus for air conditioning | |
US2138685A (en) | Refrigerating apparatus | |
KR101580679B1 (ko) | 슬러지 건조기용 폐열 회수장치 | |
JP3657425B2 (ja) | 有機溶剤回収方法及び回収装置 | |
US2041711A (en) | Apparatus for cleaning fabrics | |
US2689413A (en) | Dry cleaning apparatus | |
CN208161311U (zh) | 活性炭VOCs处理器及安装有该处理器的废气处理线 | |
JP3006068U (ja) | 油水分離装置 | |
US3877516A (en) | Condenser for streams of gas, in particular streams of gas exiting from the wash tank of plants for dry cleaning | |
JPH0639670Y2 (ja) | 溶剤回収装置 | |
US1947203A (en) | Apparatus for treating fabric | |
US2058278A (en) | Apparatus for dry cleaning |