CA2449724A1 - Fluid processing device and method - Google Patents
Fluid processing device and method Download PDFInfo
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- CA2449724A1 CA2449724A1 CA002449724A CA2449724A CA2449724A1 CA 2449724 A1 CA2449724 A1 CA 2449724A1 CA 002449724 A CA002449724 A CA 002449724A CA 2449724 A CA2449724 A CA 2449724A CA 2449724 A1 CA2449724 A1 CA 2449724A1
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- Prior art keywords
- flow
- microchannels
- flow paths
- fluid
- vaporization
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- 239000012530 fluid Substances 0.000 title claims abstract 41
- 238000000034 method Methods 0.000 title claims 33
- 239000007788 liquid Substances 0.000 claims abstract 48
- 239000006200 vaporizer Substances 0.000 claims abstract 18
- 239000002184 metal Substances 0.000 claims abstract 11
- 230000008016 vaporization Effects 0.000 claims 39
- 238000009834 vaporization Methods 0.000 claims 29
- 238000004891 communication Methods 0.000 claims 12
- 238000010438 heat treatment Methods 0.000 claims 11
- 239000007789 gas Substances 0.000 claims 10
- 238000006243 chemical reaction Methods 0.000 claims 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 9
- 239000007809 chemical reaction catalyst Substances 0.000 claims 5
- 239000000567 combustion gas Substances 0.000 claims 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 3
- 238000003786 synthesis reaction Methods 0.000 claims 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 2
- 239000003054 catalyst Substances 0.000 claims 2
- 238000009792 diffusion process Methods 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000006703 hydration reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000000629 steam reforming Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0447—Apparatus other than synthesis reactors
- C01C1/0452—Heat exchangers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
- B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
- B01B1/005—Evaporation for physical or chemical purposes; Evaporation apparatus therefor, e.g. evaporation of liquids for gas phase reactions
-
- 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
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
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- B01J35/56—
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/12—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide
- C01B3/16—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide using catalysts
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/384—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts the catalyst being continuously externally heated
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
- C01B3/58—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction
- C01B3/583—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction the reaction being the selective oxidation of carbon monoxide
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
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- C01B3/58—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction
- C01B3/586—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction the reaction being a methanation reaction
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0417—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor
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- 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
- F28D9/0043—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 the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
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- 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
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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- 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
- B01J2219/00162—Controlling or regulating processes controlling the pressure
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00783—Laminate assemblies, i.e. the reactor comprising a stack of plates
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- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00819—Materials of construction
- B01J2219/00835—Comprising catalytically active material
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0283—Processes for making hydrogen or synthesis gas containing a CO-shift step, i.e. a water gas shift step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
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- C01B2203/044—Selective oxidation of carbon monoxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/047—Composition of the impurity the impurity being carbon monoxide
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0838—Methods of heating the process for making hydrogen or synthesis gas by heat exchange with exothermic reactions, other than by combustion of fuel
- C01B2203/0844—Methods of heating the process for making hydrogen or synthesis gas by heat exchange with exothermic reactions, other than by combustion of fuel the non-combustive exothermic reaction being another reforming reaction as defined in groups C01B2203/02 - C01B2203/0294
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0064—Vaporizers, e.g. evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2210/00—Heat exchange conduits
- F28F2210/02—Heat exchange conduits with particular branching, e.g. fractal conduit arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
- F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
- F28F2275/061—Fastening; Joining by welding by diffusion bonding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
A fluid processing unit (110) having first (171) and second (152) interleave d flow paths (171) in a cross flow configuration is disclosed. The first flow paths (171) are substantially longer than the second flow paths (152) such that the pressure drop in the second flow paths can be maintained at a relatively low level and temperature variations across the second flow paths are reduced. One or more of the flow paths can be microchannels. When used a s a vaporizer and/or superheater, the longer first flow paths (171) include an upstream liquid flow portion (172) and downstream vapor flow portion (176) o f enlarged cross sectional area. A substantial pressure drop is maintained through the upstream liquid flow portion for which one or more tortous flow channels (172a) can be utilized. The unit is a thin panel, having a width substantially less its length or height, and is manufactured together with other thin units in a bonded stack of thin metal sheets. The individual unit s are then separated from the stack after bonding.
Claims (61)
1. A heat exchanger comprising:
a plurality of first microchannels and a plurality of second microchannels for conveying first and second fluids respectively;
wherein the first microchannels are in thermal contact with the second microchannels over a microchannel flow length of at least a first value;
wherein the second microchannels are in thermal contact with the first microchannels over a microchannel flow length not greater than a second value;
wherein the first value is at least about 4 times the second value.
a plurality of first microchannels and a plurality of second microchannels for conveying first and second fluids respectively;
wherein the first microchannels are in thermal contact with the second microchannels over a microchannel flow length of at least a first value;
wherein the second microchannels are in thermal contact with the first microchannels over a microchannel flow length not greater than a second value;
wherein the first value is at least about 4 times the second value.
2. The heat exchanger of claim 1 wherein a plurality of the second microchannels are interleaved between the first microchannels.
3. The heat exchanger of claim 2 further comprising a primary heat transfer surface in thermal contact with the first microchannels and at least one secondary heat transfer surface extending from the primary heat transfer surface a distance substantially greater than the smallest dimension of the first microchannel.
4. The heat exchanger of claim 3 wherein the secondary heat transfer surface extends from the primary heat transfer surface in a direction substantially parallel to the primary heat transfer surface.
5. The heat exchanger of claim 2 wherein the first value is at least about 8 times the second value.
6. The heat exchanger of claim 1 wherein the plurality of first microchannels are vaporization microchannels including a liquid flow path in fluid communication with a vapor flow path having a cross sectional area substantially greater than the cross sectional area of the liquid flow path.
7. The heat exchanger of claim 6 wherein the liquid flow path includes a tortuous flow path for establishing a pressure drop in the liquid flow path to control distribution of the first fluid in the plurality of first microchannels.
8. The heat exchanger of claim 1 formed as a stack of thin sheets integrally bonded, the stack including alternating recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of the first and second microchannels.
9. The heat exchanger of 8 wherein the first plurality of microchannels define a flow path between the holes and the second plurality of microchannels define a flow path separate from the holes and in a direction generally orthogonal to a line connecting the holes.
10. A vaporizer comprising:
a plurality of generally parallel first vaporization flow paths for conveying a vaporizing fluid interleaved and in thermal contact with a plurality of second generally parallel flow paths for conveying a heat exchange fluid;
wherein each of the first vaporization flow paths include a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion;
and wherein the liquid flow portion of each of the first vaporization flow paths include at least one tortuous microchannel having at least three turns of at least about 60 degrees for establishing a substantial pressure drop through the respective liquid flow portions.
a plurality of generally parallel first vaporization flow paths for conveying a vaporizing fluid interleaved and in thermal contact with a plurality of second generally parallel flow paths for conveying a heat exchange fluid;
wherein each of the first vaporization flow paths include a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion;
and wherein the liquid flow portion of each of the first vaporization flow paths include at least one tortuous microchannel having at least three turns of at least about 60 degrees for establishing a substantial pressure drop through the respective liquid flow portions.
11. The vaporizer of claim 10 wherein the at least one tortuous microchannel includes at least five turns of at least about 90 degrees.
12. The vaporizer of claim 11 wherein the at least one tortuous microchannel includes at least ten turns of at least about 90 degrees.
13. The vaporizer of claim 10 wherein the second flow paths for a second heat exchange fluid are microchannels having a microchannel flow length substantially less than the flow length of the portion of the first vaporization flow path in thermal contact with the second flow paths.
14. The vaporizer of claim 10 wherein the liquid flow portion of each of the first vaporization flow paths include a plurality of tortuous microchannels in parallel flow and each having at least three turns of at least about 60 degrees.
15. The vaporizer of claim 14 wherein the plurality of tortuous microchannels are in fluid communication with a common tortuous microchannel.
16. The vaporizer of claim 14 wherein the plurality of tortuous microchannels are in communication with a corresponding plurality of vapor flow portions distinct from each other near their junctions with the tortuous microchannels.
17. The vaporizer of claim 16 wherein the corresponding plurality of vapor flow portions are microchannels in fluid communication with a common vapor outlet header.
18. The vaporizer of claim 17 wherein the vapor flow paths are in fluid communication with a common vapor outlet header.
19. The vaporizer of claim 10 wherein the second flow paths for conveying a heat exchange fluid are not in direct thermal contact with the tortuous microchannel of the liquid flow portions to substantially prevent vaporization of the vaporizing fluid when it is flowing through the tortuous microchannel.
20. The vaporizer of claim 10 wherein a vaporizing fluid is in the vaporization microchannels and the pressure drop through the liquid flow portions of the first flow paths is at least about equal to the pressure drop through the vapor flow portions of the first flow paths.
21. The vaporizer of claim 10 formed as a stack of thin sheets integrally bonded, the stack including alternating recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of the first and second flow paths.
22. A vaporizer comprising:
a stack of thin sheets integrally bonded, the stack including alternating recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of first and second distinct flow paths;
wherein the first flow paths are operable to convey a vaporizing fluid between the holes and include a liquid flow portion in communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion, the liquid flow portion including at least one tortuous microchannel;
wherein the second flow paths are separate from the holes and in thermal contact with at least a portion of the vapor flow portion of the first flow paths.
a stack of thin sheets integrally bonded, the stack including alternating recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of first and second distinct flow paths;
wherein the first flow paths are operable to convey a vaporizing fluid between the holes and include a liquid flow portion in communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion, the liquid flow portion including at least one tortuous microchannel;
wherein the second flow paths are separate from the holes and in thermal contact with at least a portion of the vapor flow portion of the first flow paths.
23. The vaporizer of claim 22 wherein each of the liquid flow portions of the first flow paths include a plurality of tortuous microchannels in parallel flow.
24. The vaporizer of claim 22 wherein the length of each of the second flow paths is substantially less than the distance between the holes.
25. The vaporizer of claim 22 wherein the length of each of the second flow paths is less than about 1/8 of the distance between the holes.
26. A method comprising:
providing a single pass cross-flow heat exchanger comprising interleaved first and second flow paths wherein at least one of the first and second flow paths include at least one microchannel;
conveying a first fluid in the first flow paths;
conveying a combustion gas in the second flow path through an active hot gas flow region of the heat exchanger to transfer heat to the first flow path;
wherein the volumetric heat transfer intensity based on the volume of the active hot gas flow region is at least about 30 W/cm3 and the thermal efficiency, defined relative to an infinitely long countercurrent heat exchanger at the respective fluid inlet conditions, is at least about 70%; and wherein the pressure drop of the combustion gas through the second flow path in inches of water is less than about 10 times the inverse of the pressure of the combustion gas in atmospheres at an inlet to the second flow paths.
providing a single pass cross-flow heat exchanger comprising interleaved first and second flow paths wherein at least one of the first and second flow paths include at least one microchannel;
conveying a first fluid in the first flow paths;
conveying a combustion gas in the second flow path through an active hot gas flow region of the heat exchanger to transfer heat to the first flow path;
wherein the volumetric heat transfer intensity based on the volume of the active hot gas flow region is at least about 30 W/cm3 and the thermal efficiency, defined relative to an infinitely long countercurrent heat exchanger at the respective fluid inlet conditions, is at least about 70%; and wherein the pressure drop of the combustion gas through the second flow path in inches of water is less than about 10 times the inverse of the pressure of the combustion gas in atmospheres at an inlet to the second flow paths.
27. The method of claim 26 wherein the volumetric heat transfer intensity is at least about 40 W/cm3.
28. The method of claim 27 wherein the pressure drop in inches of water is less than about 5 times the inverse of the pressure of the combustion gas in atmospheres at an inlet to the second flow paths.
29. The method of claim 26 wherein the pressure drop in inches of water is less than about 5 times the inverse of the pressure of the combustion gas in atmospheres at an inlet to the second flow paths.
30. The method of claim 26 wherein the Reynolds number of the flow of the hot gas in the heat exchanger is less than about 500.
31. The method of claim 30 wherein the first fluid includes a liquid and the first flow paths are vaporization flow paths including a liquid flow section in communication with a vapor flow section of substantially greater cross sectional area than the liquid flow section.
32. The method of claim 26 wherein the first and second flow paths each include at least one microchannel.
33. A method of vaporizing a liquid comprising:
flowing a first stream including liquid through a plurality of first vaporization microchannels each including a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion wherein the liquid flow portions each include at least one tortuous microchannel liquid flow path for establishing a pressure drop through the liquid flow portions;
heating the first stream with a second fluid flowing through second flow paths in thermal contact with the vapor flow portions of the first vaporization microchannels to vaporize at least a portion of the first stream in the vapor flow portions; and while heating the first stream, maintaining the pressure drop through the liquid flow portion of each of the plurality of first vaporization microchannels at least about equal to the pressure drop through the vapor flow portion to control flow of the first stream through the plurality of first vaporization microchannels.
flowing a first stream including liquid through a plurality of first vaporization microchannels each including a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion wherein the liquid flow portions each include at least one tortuous microchannel liquid flow path for establishing a pressure drop through the liquid flow portions;
heating the first stream with a second fluid flowing through second flow paths in thermal contact with the vapor flow portions of the first vaporization microchannels to vaporize at least a portion of the first stream in the vapor flow portions; and while heating the first stream, maintaining the pressure drop through the liquid flow portion of each of the plurality of first vaporization microchannels at least about equal to the pressure drop through the vapor flow portion to control flow of the first stream through the plurality of first vaporization microchannels.
34. The method of claim 33 wherein the distance from the tortuous microchannel liquid flow paths to the closest second flow path is substantially greater than the distance from the vapor flow portions of the first vaporization microchannels to the closest second flow path to avoid direct thermal contact between the tortuous microchannel liquid flow paths and the second flow paths to substantially prevent vaporization of the first stream in the tortuous microchannel liquid flow path.
35. The method of claim 33 wherein the first stream includes water and heating the first stream includes vaporizing the water to steam.
36. The method of claim 35 wherein the first stream is substantially devoid of liquid water at an outlet of the first vaporization microchannels.
37. The method of claim 36 wherein heating the first stream includes superheating the steam a substantial amount.
38. A method of vaporizing a liquid comprising:
flowing a first stream including liquid through a plurality of first vaporization microchannels each including a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion;
heating the first stream with a second fluid flowing through second heat exchange microchannels in thermal contact with the first vaporization microchannels to vaporize at least a portion of the first stream;
wherein the Reynolds number of the flow of the second fluid in the second heat exchange microchannels is less than about 1000 and the pressure drop of the second fluid through the second heat exchange microchannels in inches of water is less than about 10 times the inverse of the pressure of the second fluid in atmospheres at an inlet to the second heat exchange microchannels.
flowing a first stream including liquid through a plurality of first vaporization microchannels each including a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion;
heating the first stream with a second fluid flowing through second heat exchange microchannels in thermal contact with the first vaporization microchannels to vaporize at least a portion of the first stream;
wherein the Reynolds number of the flow of the second fluid in the second heat exchange microchannels is less than about 1000 and the pressure drop of the second fluid through the second heat exchange microchannels in inches of water is less than about 10 times the inverse of the pressure of the second fluid in atmospheres at an inlet to the second heat exchange microchannels.
39. The method of claim 38 further comprising providing a vaporizer formed as a stack of thin metal sheets bonded by integral metal-to-metal bonds, the stack including alternating recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of the first and second microchannels.
40. A method comprising:
forming a plurality of individual fluid processing units together and then separating the units after some degree of assembly into individual units;
wherein forming the plurality of individual units together includes forming integral metal-to-metal bonds in a stack of thin metal sheets, the stack including alternating recessed sheets wherein the recesses in the sheets define at least a portion of flow paths for the individual fluid processing units, and wherein the width of the individual units after the separation is substantially less than the height of the stack of thin metal sheets.
forming a plurality of individual fluid processing units together and then separating the units after some degree of assembly into individual units;
wherein forming the plurality of individual units together includes forming integral metal-to-metal bonds in a stack of thin metal sheets, the stack including alternating recessed sheets wherein the recesses in the sheets define at least a portion of flow paths for the individual fluid processing units, and wherein the width of the individual units after the separation is substantially less than the height of the stack of thin metal sheets.
41. The method of claim 40 wherein forming integral metal-to-metal bonds includes diffusion bonding.
42. The method of claim 40 wherein forming integral metal-to-metal bonds includes exerting pressure on the stack of thin metal sheets.
43. The method of claim 40 wherein separating the units includes cutting the material between the units.
44. The method of claim 43 wherein the cutting is performed by wire EDM.
45. The method of claim 40 wherein the recesses in the sheets define at least portions of first and second generally orthogonal flow paths wherein the second flow path spans the width of the individual unit and the first flow paths generally spans the length of the unit, and wherein the length of the unit is at least about 4 times the width of the unit.
46. The method of claim 45 wherein the first and second flow paths are microchannels.
47. A method for vaporizing a liquid to produce superheated vapor:
flowing a first stream including liquid through a plurality of first vaporization microchannels disposed between a macrochannel inlet and a macrochannel outlet, each vaporization microchannel including a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion;
vaporizing and substantially superheating the first stream in the first vaporization microchannels by heating the first stream with a second fluid flowing through second heat exchange microchannels in thermal contact with the first vaporization microchannels along the microchannel flow length of the first vaporization microchannels.
flowing a first stream including liquid through a plurality of first vaporization microchannels disposed between a macrochannel inlet and a macrochannel outlet, each vaporization microchannel including a liquid flow portion in fluid communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion;
vaporizing and substantially superheating the first stream in the first vaporization microchannels by heating the first stream with a second fluid flowing through second heat exchange microchannels in thermal contact with the first vaporization microchannels along the microchannel flow length of the first vaporization microchannels.
48. The method of claim 47 wherein the microchannel flow length of the first vaporization microchannels is at least about 4 times greater than the microchannel flow length of the second heat exchange microchannels.
49. The method of claim 48 wherein first and second microchannels are formed in a panel having first and second faces each having a length and a height wherein the second heat exchange microchannels extend between the first and second faces and wherein the width of the panel between the first and second faces is substantially less than the length and the height of each of the faces.
50. The method of claim 47 wherein flowing the first stream includes flowing the first stream through a tortuous microchannel to maintain a substantial pressure drop in the liquid flow portion.
51. The heat exchanger of claim 1 wherein the first microchannels are reaction microchannels including a reaction catalyst.
52. The heat exchanger of claim 51 wherein the reaction catalyst is a catalyst for a sabatier reaction, a preferential oxidation reaction, a steam reforming reaction, a partial oxidation reaction, a water gas shift reaction, a reverse water gas shift reaction, an ammonia synthesis reaction, a methanol synthesis reaction, an esterfication reaction, an olefin hydration reaction, a MTBE synthesis reaction, or a selective methanation reaction.
53. The heat exchanger of claim 51 wherein the second flow paths are reaction microchannels including a reaction catalyst.
54. The heat exchanger of claim 53 wherein the reaction catalyst in the second flow paths is a combustion catalyst.
55. A method comprising:
providing a stack of thin sheets integrally bonded, the stack including a plurality of recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of a plurality of generally parallel first vaporization flow paths operable to convey a vaporizing fluid between the holes and including a liquid flow portion in communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion, the liquid flow portions of each of the first vaporization flow paths including at least one tortuous microchannel for establishing a pressure drop through the liquid flow portion of the first vaporization flow paths;
flowing a first fluid containing liquid into each of the first vaporization flow paths while maintaining a sufficient pressure drop in the liquid flow portions to control distribution of the first fluid to each of the first vaporization flow paths;
while flowing the first fluid, heating the first fluid to vaporize at least a portion of the liquid while in the vapor flow portions.
providing a stack of thin sheets integrally bonded, the stack including a plurality of recessed sheets having holes at opposing ends wherein the recesses in the sheets define at least a portion of a plurality of generally parallel first vaporization flow paths operable to convey a vaporizing fluid between the holes and including a liquid flow portion in communication with a vapor flow portion having a cross sectional area substantially greater than the cross sectional area of the liquid flow portion, the liquid flow portions of each of the first vaporization flow paths including at least one tortuous microchannel for establishing a pressure drop through the liquid flow portion of the first vaporization flow paths;
flowing a first fluid containing liquid into each of the first vaporization flow paths while maintaining a sufficient pressure drop in the liquid flow portions to control distribution of the first fluid to each of the first vaporization flow paths;
while flowing the first fluid, heating the first fluid to vaporize at least a portion of the liquid while in the vapor flow portions.
56. The method of claim 55 wherein heating the first fluid includes heating the first fluid with a second fluid flowing through second flow paths interleaved between the first flow paths and formed from the recesses in the stacked sheets.
57. The method of claim 55 wherein heating the first fluid includes heating with an electric heater.
58. A fluid processing device comprising:
a plurality of first reaction flow paths having a smallest dimension less than about 1cm and including a reaction catalyst; and a plurality of second heat exchange microchannels interleaved and in thermal contact with ones of the first reaction flow paths;
wherein the first flow paths are in thermal contact with the second microchannels over a flow length of at least a first value;
wherein the second microchannels are in thermal contact with the first flow paths over a microchannel flow length not greater than a second value;
wherein the first value is at least about 8 times the second value.
a plurality of first reaction flow paths having a smallest dimension less than about 1cm and including a reaction catalyst; and a plurality of second heat exchange microchannels interleaved and in thermal contact with ones of the first reaction flow paths;
wherein the first flow paths are in thermal contact with the second microchannels over a flow length of at least a first value;
wherein the second microchannels are in thermal contact with the first flow paths over a microchannel flow length not greater than a second value;
wherein the first value is at least about 8 times the second value.
59. A method for forming a heat exchanger system comprising:
forming a stacked array of thin sheets forming a portion of a fluid processing system, the stacked array defining a first and second face having a plurality of distinct gas microchannels therebetween; and connecting the stacked array to a separately formed gas header for distribution of a gas to the plurality of distinct gas microchannels in the stacked array;
wherein each of the first and second faces has a length and a width substantially greater than the distance between the faces.
forming a stacked array of thin sheets forming a portion of a fluid processing system, the stacked array defining a first and second face having a plurality of distinct gas microchannels therebetween; and connecting the stacked array to a separately formed gas header for distribution of a gas to the plurality of distinct gas microchannels in the stacked array;
wherein each of the first and second faces has a length and a width substantially greater than the distance between the faces.
60. The method of claim 59 wherein the stacked array is bonded to form metal to metal bonds.
61. The method of claim 59 wherein the array is bonded in a diffusion bonding process and the separately formed gas header is not.
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US60/363,269 | 2002-03-11 | ||
PCT/US2002/018079 WO2003033983A2 (en) | 2001-06-06 | 2002-06-06 | Fluid processing device and method |
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CA2449724A1 true CA2449724A1 (en) | 2003-04-24 |
CA2449724C CA2449724C (en) | 2011-03-15 |
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EP (1) | EP1397633A2 (en) |
JP (2) | JP2005516171A (en) |
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CA2449724C (en) | 2011-03-15 |
JP2005516171A (en) | 2005-06-02 |
WO2003033983A3 (en) | 2003-08-28 |
US6994829B2 (en) | 2006-02-07 |
EP1397633A2 (en) | 2004-03-17 |
WO2003033983A2 (en) | 2003-04-24 |
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