US20050095184A1 - Method for carrying out chemical reactions in pseudo-isothermal conditions - Google Patents
Method for carrying out chemical reactions in pseudo-isothermal conditions Download PDFInfo
- Publication number
- US20050095184A1 US20050095184A1 US10/977,528 US97752804A US2005095184A1 US 20050095184 A1 US20050095184 A1 US 20050095184A1 US 97752804 A US97752804 A US 97752804A US 2005095184 A1 US2005095184 A1 US 2005095184A1
- Authority
- US
- United States
- Prior art keywords
- fluid
- carrying
- heat exchanger
- exchanger
- chemical reactions
- 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.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/248—Reactors comprising multiple separated flow channels
- B01J19/249—Plate-type reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00085—Plates; Jackets; Cylinders
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2451—Geometry of the reactor
- B01J2219/2453—Plates arranged in parallel
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2461—Heat exchange aspects
- B01J2219/2462—Heat exchange aspects the reactants being in indirect heat exchange with a non reacting heat exchange medium
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2476—Construction materials
- B01J2219/2483—Construction materials of the plates
- B01J2219/2485—Metals or alloys
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2491—Other constructional details
- B01J2219/2492—Assembling means
- B01J2219/2493—Means for assembling plates together, e.g. sealing means, screws, bolts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0022—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for chemical reactors
Definitions
- the present invention in its most general aspect, refers to a method for carrying out chemical reactions in so-called pseudo-isothermal conditions, that is in conditions such that the reaction temperature is controlled within a limited range of values around a predetermined optimal value.
- this invention concerns a method of the aforementioned type for controlling the temperature of catalyzed reactions, based upon the use of heat exchangers immersed in a reaction environment, for example in a catalytic bed, in which a predetermined chemical reaction takes place.
- the method of the present invention comprises the use of plated exchangers immersed in a catalytic bed and internally crossed by an operating heat exchange fluid.
- plated heat exchangers equipped with an inlet fitting and an outlet fitting on opposite sides, in such a way as to allow the passage of an operating heat exchange fluid inside them along a predetermined direction.
- heat exchangers are equipped with an auxiliary distribution circuit of operating heat exchange fluid, which allows the introduction of fresh operating fluid, at a predetermined temperature, inside and at different points of the heat exchanger.
- the introduction of fresh operating fluid, at different predetermined points of the heat exchanger, and the mixing thereof with the operating fluid flowing inside the exchanger allow the temperature of the exchanger to be controlled within predetermined limits and consequently allow the conditions of pseudo-isothermicity to be maintained inside the reaction zone.
- reactors comprising two operating heat exchange fluid distribution systems, one to directly feed the heat exchangers through the inlet fitting and one to feed an operating heat exchange fluid to the auxiliary distribution circuit.
- the technical problem forming the basis of the present invention is that of providing a method for carrying out chemical reactions in so-called pseudo-isothermal conditions based upon the use of heat exchangers of the aforementioned type, which on the one hand allows the conditions of pseudo-isothermicity to be maintained in a simple and reliable manner, being on the other hand simple to carry out in practice so as to allow the drawbacks of the prior art described above to be overcome.
- a method for carrying out chemical reactions in so-called pseudo-isothermal conditions and in a predetermined reaction environment comprising the step of arranging in said environment at least one heat exchanger crossed by an operating fluid along a main direction, characterized in that a same flow of operating fluid is fed in many points along said main direction.
- the invention also refers to an exchanger having structural and functional characteristics suitable for actuating the present method.
- FIG. 1 schematically represents a perspective view of a heat exchanger used to carry out the method according to the present invention.
- FIG. 2 schematically represents a section view of FIG. 1 along the line II-II.
- FIG. 3 schematically represents a section view of FIG. 1 along the line I-I.
- a heat exchanger for actuating the method of the present invention is generally indicated with 1 .
- the heat exchanger 1 having a flattened parallelepiped shape, comprises two metallic plates 2 , 3 having low thickness so as to be plastically deformable, substantially flat, juxtaposed and joined in a predetermined spaced relationship through a perimetric welding 4 .
- a chamber 5 is defined, in fluid communication with the outside through a fluid inlet fitting 6 and a fluid outlet fitting 7 positioned on respective opposite short sides 8 a and 8 b.
- divider baffles 12 preferably positioned on the same axis A-A, substantially perpendicular to the opposite short sides 8 a, 8 b in the example of FIG. 1 , and formed in the exchanger 1 through plastic deformation of the metallic plates 2 , 3 , a distribution channel 10 and a heat exchange chamber 9 are defined in said exchanger 1 .
- the distribution channel 10 is in fluid communication with the outside through the fluid inlet fitting 6 and in fluid communication with the heat exchange chamber 9 through passages 11 , also known as distributors, which alternate with the divider baffles 12 along the axis A-A.
- the heat exchange chamber is also in fluid communication with the outside through the fluid outlet fitting 7 .
- exchangers of the aforementioned type are arranged inside a reaction zone, for example a catalytic bed, preferably of the fixed type with a granular catalyst, in which a chemical reaction takes place, for example continuously, for example exothermal like methanol synthesis.
- a flow of operating heat exchange fluid at predetermined temperature and pressure is made to flow, through the fitting 6 , inside the heat exchanger.
- the operating fluid goes down along the distribution channel 10 and flows inside the heat exchange chamber 9 through the passages 11 .
- passages 11 which have the function of distributors of the operating fluid, are sized in such a way as to allow the feeding to the heat exchange chamber 9 of a predetermined flow rate of said operating fluid.
- the operating fluid that flows inside the heat exchange chamber 9 is responsible for the at least partial removal of the heat generated by the chemical reaction inside the reaction zone and the consequent maintenance of the pseudo-isothermal conditions inside the reaction zone itself.
- the operating fluid as it flows inside the chamber 9 , undergoes a gradual temperature increase, due to the aforementioned heat exchange with the reaction zone.
- the supply of fresh operating fluid through subsequent feedings allows the temperature in the heat exchange chamber 9 to be kept within the predetermined limits, ensuring therefore a removal of generally constant heat along the entire length of the heat exchanger.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/671,257 US7998427B2 (en) | 2003-11-04 | 2007-02-05 | Method for carrying out chemical reactions in pseudo-isothermal conditions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03025201A EP1529564B1 (fr) | 2003-11-04 | 2003-11-04 | Echangeur de chaleur et procédé pour l'exécution de réactions chimiques dans des conditions pseudo-isothermiques |
EP03025201.9 | 2003-11-04 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/671,257 Continuation US7998427B2 (en) | 2003-11-04 | 2007-02-05 | Method for carrying out chemical reactions in pseudo-isothermal conditions |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050095184A1 true US20050095184A1 (en) | 2005-05-05 |
Family
ID=34429253
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/977,528 Abandoned US20050095184A1 (en) | 2003-11-04 | 2004-10-29 | Method for carrying out chemical reactions in pseudo-isothermal conditions |
US11/671,257 Expired - Fee Related US7998427B2 (en) | 2003-11-04 | 2007-02-05 | Method for carrying out chemical reactions in pseudo-isothermal conditions |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/671,257 Expired - Fee Related US7998427B2 (en) | 2003-11-04 | 2007-02-05 | Method for carrying out chemical reactions in pseudo-isothermal conditions |
Country Status (9)
Country | Link |
---|---|
US (2) | US20050095184A1 (fr) |
EP (1) | EP1529564B1 (fr) |
JP (1) | JP2005138104A (fr) |
CN (1) | CN100565070C (fr) |
AT (1) | ATE434486T1 (fr) |
AU (1) | AU2004222778B2 (fr) |
DE (1) | DE60328102D1 (fr) |
DK (1) | DK1529564T3 (fr) |
ES (1) | ES2328026T3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070261831A1 (en) * | 2004-05-24 | 2007-11-15 | Methanol Casale S.A. | Plate-Type Heat Exchanger |
CN112040719A (zh) * | 2017-12-26 | 2020-12-04 | 讯凯国际股份有限公司 | 散热结构 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1782883A1 (fr) * | 2005-11-08 | 2007-05-09 | Methanol Casale S.A. | Réacteur chimique isothermique |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3666423A (en) * | 1969-11-26 | 1972-05-30 | Texaco Inc | Heat exchange apparatus |
US3666682A (en) * | 1969-11-26 | 1972-05-30 | Texaco Inc | Water-gas shift conversion process |
US6183703B1 (en) * | 1996-04-12 | 2001-02-06 | Ztek Corporation | Thermally enhanced compact reformer |
US20020088613A1 (en) * | 2001-01-05 | 2002-07-11 | Methanol Casale S.A. | Pseudo isothermal catalytic reactor for exothermic or endothermic heterogeneous chemical reactions |
US6419884B1 (en) * | 1998-07-25 | 2002-07-16 | Xcellsis Gmbh | Reactor unit in a system for producing hydrogen-rich gas from a liquid raw fuel |
US20020117294A1 (en) * | 2001-02-27 | 2002-08-29 | Methanol Casale S.A. | Method for carrying out chemical reactions in pseudo-isothermal conditions |
US20040071606A1 (en) * | 2002-04-05 | 2004-04-15 | Methanol Casale S.A. | Heat exchange unit for pseudo-isothermal reactors |
US6916453B2 (en) * | 2000-05-11 | 2005-07-12 | Methanol Casale S.A. | Reactor for exothermic or endothermic heterogeneous reactions |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4099559A (en) * | 1976-05-10 | 1978-07-11 | Olin Corporation | Solar absorber plate design |
EP1306126A1 (fr) * | 2001-10-19 | 2003-05-02 | Methanol Casale S.A. | Echangeur de chaleur pour réacteurs chimiques isothermes |
-
2003
- 2003-11-04 ES ES03025201T patent/ES2328026T3/es not_active Expired - Lifetime
- 2003-11-04 EP EP03025201A patent/EP1529564B1/fr not_active Expired - Lifetime
- 2003-11-04 DK DK03025201T patent/DK1529564T3/da active
- 2003-11-04 DE DE60328102T patent/DE60328102D1/de not_active Expired - Lifetime
- 2003-11-04 AT AT03025201T patent/ATE434486T1/de not_active IP Right Cessation
-
2004
- 2004-10-13 JP JP2004298654A patent/JP2005138104A/ja active Pending
- 2004-10-22 AU AU2004222778A patent/AU2004222778B2/en not_active Ceased
- 2004-10-29 US US10/977,528 patent/US20050095184A1/en not_active Abandoned
- 2004-11-04 CN CNB2004100903546A patent/CN100565070C/zh not_active Expired - Fee Related
-
2007
- 2007-02-05 US US11/671,257 patent/US7998427B2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3666423A (en) * | 1969-11-26 | 1972-05-30 | Texaco Inc | Heat exchange apparatus |
US3666682A (en) * | 1969-11-26 | 1972-05-30 | Texaco Inc | Water-gas shift conversion process |
US6183703B1 (en) * | 1996-04-12 | 2001-02-06 | Ztek Corporation | Thermally enhanced compact reformer |
US6419884B1 (en) * | 1998-07-25 | 2002-07-16 | Xcellsis Gmbh | Reactor unit in a system for producing hydrogen-rich gas from a liquid raw fuel |
US6916453B2 (en) * | 2000-05-11 | 2005-07-12 | Methanol Casale S.A. | Reactor for exothermic or endothermic heterogeneous reactions |
US20020088613A1 (en) * | 2001-01-05 | 2002-07-11 | Methanol Casale S.A. | Pseudo isothermal catalytic reactor for exothermic or endothermic heterogeneous chemical reactions |
US20020117294A1 (en) * | 2001-02-27 | 2002-08-29 | Methanol Casale S.A. | Method for carrying out chemical reactions in pseudo-isothermal conditions |
US20040071606A1 (en) * | 2002-04-05 | 2004-04-15 | Methanol Casale S.A. | Heat exchange unit for pseudo-isothermal reactors |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070261831A1 (en) * | 2004-05-24 | 2007-11-15 | Methanol Casale S.A. | Plate-Type Heat Exchanger |
US7727493B2 (en) * | 2004-05-24 | 2010-06-01 | Methanol Casale S.A. | Plate-type heat exchanger |
CN112040719A (zh) * | 2017-12-26 | 2020-12-04 | 讯凯国际股份有限公司 | 散热结构 |
Also Published As
Publication number | Publication date |
---|---|
CN1614347A (zh) | 2005-05-11 |
EP1529564B1 (fr) | 2009-06-24 |
AU2004222778A1 (en) | 2005-05-19 |
ATE434486T1 (de) | 2009-07-15 |
DK1529564T3 (da) | 2009-10-26 |
EP1529564A1 (fr) | 2005-05-11 |
JP2005138104A (ja) | 2005-06-02 |
US7998427B2 (en) | 2011-08-16 |
AU2004222778B2 (en) | 2010-06-10 |
DE60328102D1 (de) | 2009-08-06 |
US20070196251A1 (en) | 2007-08-23 |
ES2328026T3 (es) | 2009-11-06 |
CN100565070C (zh) | 2009-12-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: METHANOL CASALE S.A., SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GUARINO, GIUSEPPE;REEL/FRAME:015950/0950 Effective date: 20041008 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |