WO1994011457A1 - Blocs adsorbants pour pompes a chaleur chimiques et leur procede d'obtention - Google Patents
Blocs adsorbants pour pompes a chaleur chimiques et leur procede d'obtention Download PDFInfo
- Publication number
- WO1994011457A1 WO1994011457A1 PCT/FR1993/001105 FR9301105W WO9411457A1 WO 1994011457 A1 WO1994011457 A1 WO 1994011457A1 FR 9301105 W FR9301105 W FR 9301105W WO 9411457 A1 WO9411457 A1 WO 9411457A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zeolite
- blocks
- binder
- thermally conductive
- blocks according
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/047—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for absorption-type refrigeration systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B35/00—Boiler-absorbers, i.e. boilers usable for absorption or adsorption
- F25B35/04—Boiler-absorbers, i.e. boilers usable for absorption or adsorption using a solid as sorbent
Definitions
- the present invention aims at the preparation of new zeolite adsorbents for the equipment of chemical heat pumps.
- Refrigeration systems have undergone a radical change following the questioning of refrigerants of the chlorofluorocarbon (CFC) type, designated as responsible for part of the destruction of the ozone layer and the greenhouse effect.
- CFC chlorofluorocarbon
- sorption systems seem well placed for the production of cold from thermal (and not electric) energy.
- absorption systems implement the physical transformations of a liquid / gas (or vapor) couple.
- the adsorption systems are differentiated by the use of solid / gas (or vapor) couples, such as for example the calcium chloride / methylamine couple described in an improved form in French patent n ° 2547512 (SNEA) or the zeolite / water pair described in French Patent No. 2,489,488 (Blaizat).
- REPLACEMENT FE iLL ⁇ clean of the adsorbent bed for example zeolite and binder
- the adsorbent bed for example zeolite and binder
- the present invention overcomes these drawbacks with the production of zeolite blocks comprising a frame of material which is a good conductor of heat and a hydrophilic zeolite agglomerated by a zeolitisable silico-aluminous binder.
- These new adsorbents which are in the form of cylinders several centimeters in diameter, make it possible to increase the power of thermal adsorption machines using torque zeolite / water thanks to the reduction in the duration of the adsorption / desorption cycles, machines which therefore become competitive with systems using the compression of refrigerants.
- the zeolites useful for carrying out the invention are zeolites which are very hydrophilic and exhibit a notable exothermicity of hydration, in particular zeolites A, X or Y and certain natural zeolites such as clinoptilolite.
- thermally conductive frames useful for carrying out the invention are on the one hand coherent structures such as sponges or metallic foams of copper, iron or nickel, and more generally of metal which is a good conductor of heat, and on the other hand the wool, mats or felts of metallic thread or carbon fibers.
- the binders which can be used in the present invention are zeolitisable silico-aluminous pastes, in particular, the mixture of silica sol and sodium aluminate solution, the constituents of which transform by zeolitization into zeolite A.
- zeolitisable silico-aluminous pastes in particular, the mixture of silica sol and sodium aluminate solution, the constituents of which transform by zeolitization into zeolite A.
- the principle of use of such binders the agglomeration of zeolite powders in grains, beads or extrusions (see for example the French patent published under No. 2,632,944, CECA SA).
- zeolitisable binder has proved to be very advantageous, not only by a better cohesion of the blocks and the increase in their content of active zeolite to the detriment of the inert binder, but also, which is more unexpected, by the improvement of thermal transfer and mass transfers of mass.
- a zeolite powder is mixed with the binder brought to a desirable consistency by water and the rheological properties of which have been adjusted with the aid of agents usual in the matter, like modified celluloses.
- a thermally conductive frame is placed in a compression mold, the geometry and internal dimensions of which reproduce the characteristics of the interior of the reactor which will receive the adsorbent.
- the assembly is compressed using a piston for a few minutes.
- the chosen binder is a zeolitisable binder
- the block thus shaped is consolidated in its mold by zeolitization of the sodium silico-aluminate gel at approximately 100 ° C.
- the block is then carefully removed from the mold, dried, then calcined under a stream of air at high temperature (around 550 ° C).
- zeolite A includes both the zeolite introduced in powder form and that which results from the zeolitization of the binder, and the designation other zeolite includes hydrophilic zeolites other than zeolite A introduced in powder form, in particular X or Y zeolites or natural zeolites such as clinoptilolite.
- the blocks according to the invention offer a thermal conductivity much higher than that of blocks made up, according to the prior art, of zeolite added with metallic particles, undoubtedly because the simple contact between zeolite particles and metallic particles constitutes an obstacle to thermal conduction substantially equivalent to contact between particles of zeolites. While the thermal conductivity of blocks formed of zeolite powder and copper beads hardly exceeds 0.3 W / m / ° C, values more than twenty times higher are obtained with blocks resulting from the agglomeration of copper and zeolite powder.
- these blocks are characterized by a porous distribution centered around 0.8 to 1.2 ⁇ m, with a pore volume of between 0.25 and 0.80 cm 3 / g, the consequence of which is excellent permeability, of the order of 10 ⁇ 12 m 2 , characteristics ensuring the speed of the material transfers necessary for the execution of short adsorption / desorption cycles.
- a) - 200 ml of a solution containing 30 grams of NaOH is prepared from flake soda or sodium hydroxide solution. It is brought to the boil and gradually dispersed therein 50 grams of hydrated alumina. When the solution has become clear, it is made up to 200 ml with water and allowed to cool to room temperature.
- c) The sodium aluminate solution prepared in a) is added to the preceding dough and kneaded for approximately 10 minutes, then 350 grams of copper beads 1 mm in diameter are added. Mix again for ten minutes to disperse the beads well within the dough. d) - 40 grams of the above mixture are introduced into a mold 4 cm in diameter, and it is compressed for three minutes at 300 bars. e) - The block, still wet, is consolidated in its mold by zeolitization at 100 ° C for 4 hours in a ventilated oven. f) - The block is removed from the mold, then activated at 550 ° C for 1 hour under air sweep; this operation also makes it possible to rid the block of its carboxy-methylcellulose content.
- thermal conductivity of such a block containing 35% by weight of copper is only 0.3 / m / ° C.
- Phases a), b) and c) are identical to those of Example 1.
- d) The humidity of the paste is adjusted by adding 340 grams of water so as to obtain a paste whose loss on ignition at 900 ° C. will be close to 50%.
- e) At the bottom of a 4 cm diameter mold, there are three sheets of copper foam (ref. Resocell® M 045 from Soratec / Nitech). These sheets are covered with a layer of 6.4 grams of the paste obtained in d), then 6 sheets of copper foam, then 6.4 grams of paste and so on up to a height of 4.5 cm. . f) - The whole is compressed with a piston at a pressure of 300 bars.
- g) The block is consolidated in its mold by zeolitization at 100 ° C for 4 hours.
- h) The consolidated block is removed from the mold and then activated at 550 ° C for 1 hour.
- the thermal conductivity of such a block containing 35% copper is 8 / m / ° C.
- Example 2 The procedures of Example 2 are reproduced, with the difference that the zeolite 4A is replaced by a NaX zeolite (zeolite Siliporite® G5 from CECA S.A.). A block is thus obtained, the thermal conductivity of which is also 8 W / m / ° C.
- zeolite Siliporite® G5 from CECA S.A.
- Example 3 The methods of Example 3 are reproduced, with the difference that the copper foam is replaced by a nickel foam. A block is thus obtained, the thermal conductivity of which is 5.5 W / m / ° C.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6511789A JPH07504360A (ja) | 1992-11-13 | 1993-11-10 | 化学的ヒートポンプ用の吸着剤ブロックとその製造方法 |
EP93924689A EP0623161A1 (fr) | 1992-11-13 | 1993-11-10 | Blocs adsorbants pour pompes a chaleur chimiques et leur procede d'obtention |
KR1019940702428A KR950700377A (ko) | 1992-11-13 | 1994-07-13 | 화학열 펌프용 흡착 블록 및 이의 제조방법(absorbent units for chemical heat pumps and process for their production) |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR92/13682 | 1992-11-13 | ||
FR9213682A FR2698098B1 (fr) | 1992-11-13 | 1992-11-13 | Blocs adsorbants pour pompes à chaleur chimiques et leur procédé d'obtention. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994011457A1 true WO1994011457A1 (fr) | 1994-05-26 |
Family
ID=9435524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1993/001105 WO1994011457A1 (fr) | 1992-11-13 | 1993-11-10 | Blocs adsorbants pour pompes a chaleur chimiques et leur procede d'obtention |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0623161A1 (fr) |
JP (1) | JPH07504360A (fr) |
KR (1) | KR950700377A (fr) |
CA (1) | CA2126992A1 (fr) |
FR (1) | FR2698098B1 (fr) |
WO (1) | WO1994011457A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7003979B1 (en) | 2000-03-13 | 2006-02-28 | Sun Microsystems, Inc. | Method and apparatus for making a sorber |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9502292D0 (en) * | 1995-02-06 | 1995-03-29 | Bratton Graham J | Adsorbent material |
DE19730136A1 (de) * | 1997-07-14 | 1999-01-21 | Electrolux Leisure Appliances | Gerät der Klimatechnik sowie dessen Komponenten |
WO2010068326A1 (fr) * | 2008-12-10 | 2010-06-17 | Uop Llc | Milieu adsorbant |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2103509A (en) * | 1982-06-02 | 1983-02-23 | Exxon Research Engineering Co | Adsorbents or sorbents for heat pumps |
DE3347700A1 (de) * | 1983-12-31 | 1985-07-11 | Fritz Dipl.-Ing. Kaubek | Zeolithformlinge mit hoher waermeleitung und verfahren zur herstellung |
WO1989012603A2 (fr) * | 1988-06-17 | 1989-12-28 | Ceca S.A. | Granule de zeolites a liant zeolitique |
US5120694A (en) * | 1989-07-28 | 1992-06-09 | Uop | Method of coating aluminum substrates with solid adsorbent |
DE4112358A1 (de) * | 1991-04-16 | 1992-10-22 | Bayerische Motoren Werke Ag | Zeolithformling mit einem metalltraeger |
JPH1048194A (ja) * | 1996-08-03 | 1998-02-20 | Horiba Ltd | 元素分析装置 |
-
1992
- 1992-11-13 FR FR9213682A patent/FR2698098B1/fr not_active Expired - Fee Related
-
1993
- 1993-11-10 CA CA002126992A patent/CA2126992A1/fr not_active Abandoned
- 1993-11-10 JP JP6511789A patent/JPH07504360A/ja active Pending
- 1993-11-10 EP EP93924689A patent/EP0623161A1/fr not_active Withdrawn
- 1993-11-10 WO PCT/FR1993/001105 patent/WO1994011457A1/fr not_active Application Discontinuation
-
1994
- 1994-07-13 KR KR1019940702428A patent/KR950700377A/ko active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2103509A (en) * | 1982-06-02 | 1983-02-23 | Exxon Research Engineering Co | Adsorbents or sorbents for heat pumps |
DE3347700A1 (de) * | 1983-12-31 | 1985-07-11 | Fritz Dipl.-Ing. Kaubek | Zeolithformlinge mit hoher waermeleitung und verfahren zur herstellung |
WO1989012603A2 (fr) * | 1988-06-17 | 1989-12-28 | Ceca S.A. | Granule de zeolites a liant zeolitique |
US5120694A (en) * | 1989-07-28 | 1992-06-09 | Uop | Method of coating aluminum substrates with solid adsorbent |
DE4112358A1 (de) * | 1991-04-16 | 1992-10-22 | Bayerische Motoren Werke Ag | Zeolithformling mit einem metalltraeger |
JPH1048194A (ja) * | 1996-08-03 | 1998-02-20 | Horiba Ltd | 元素分析装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 16, no. 434 (M - 1308) 10 September 1992 (1992-09-10) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7003979B1 (en) | 2000-03-13 | 2006-02-28 | Sun Microsystems, Inc. | Method and apparatus for making a sorber |
Also Published As
Publication number | Publication date |
---|---|
EP0623161A1 (fr) | 1994-11-09 |
KR950700377A (ko) | 1995-01-16 |
JPH07504360A (ja) | 1995-05-18 |
FR2698098A1 (fr) | 1994-05-20 |
CA2126992A1 (fr) | 1994-05-26 |
FR2698098B1 (fr) | 1994-12-16 |
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