CN116470106A - Modularized efficient hydrogen production fuel processor and application - Google Patents

Modularized efficient hydrogen production fuel processor and application Download PDF

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Publication number
CN116470106A
CN116470106A CN202211346540.6A CN202211346540A CN116470106A CN 116470106 A CN116470106 A CN 116470106A CN 202211346540 A CN202211346540 A CN 202211346540A CN 116470106 A CN116470106 A CN 116470106A
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combustion
reforming
tail gas
chamber
cavity
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王素力
吴私
孙公权
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Dalian Institute of Chemical Physics of CAS
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Dalian Institute of Chemical Physics of CAS
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Priority to CN202211346540.6A priority Critical patent/CN116470106A/en
Publication of CN116470106A publication Critical patent/CN116470106A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Fuel Cell (AREA)

Abstract

The invention belongs to the technical field of fuel cells, and particularly relates to a modularized efficient hydrogen production fuel processor and application. The processor comprises a combustion chamber module and a plurality of reforming chamber modules connected in series or in parallel; the reforming chamber module comprises a combustion tail gas cavity and a reforming chamber which is arranged in the combustion tail gas cavity and provided with a wave-shaped structure, the combustion tail gas cavity is connected with the combustion chamber module, combustion tail gas generated by catalytic combustion reaction of the combustion chamber module enters the combustion tail gas cavity, and heat is provided for the reforming chamber. The invention has the advantages of high compact structure, low manufacturing cost and high thermal efficiency, solves the problem of easy occurrence of gas short circuit in the reforming chamber, is beneficial to the improvement of the volume ratio power of the fuel cell system and is convenient for equipment amplification.

Description

Modularized efficient hydrogen production fuel processor and application
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a modularized efficient hydrogen production fuel processor and application.
Background
A fuel cell is a device that directly converts chemical energy stored in a compound fuel into electric energy through a chemical reaction. The fuel processor is a hydrogen supply device of the fuel cell and mainly comprises an endothermic reforming chamber, a combustion chamber for providing a heat source, related accessories and the like, and if the arrangement is unreasonable, the conditions of short circuit of internal gas (no participation in reaction), low fuel heat utilization efficiency, long starting time, poor hydrogen production efficiency, large and compact volume and the like can occur, so that the power generation efficiency, specific power and service life of the whole battery pack are greatly influenced; meanwhile, the structure is complex, and the manufacturing cost is high.
The invention provides a fuel processor which has a highly compact structure, can be manufactured in an aluminum extrusion mode, has low manufacturing cost and high thermal efficiency, solves the problem that gas short circuit is easy to occur in granular catalyst deposition in a reforming chamber, is convenient to amplify equipment, is particularly suitable for the field of methanol steam reforming hydrogen production reaction in a high-power high-temperature proton exchange membrane fuel cell (HT-PEMFC), and effectively improves the efficiency of the fuel processor and a fuel cell system.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a modularized high-efficiency hydrogen production fuel processor and application thereof, so as to solve the problems that the existing fuel processor is complex in structure, short circuit of internal gas can occur, the fuel heat utilization efficiency is low, the starting time is long, the hydrogen production efficiency is poor, the volume is large and is not compact, and the manufacturing cost is high.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an embodiment of the present invention provides a modular high efficiency hydrogen production fuel processor comprising: a combustion chamber module and a plurality of reforming chamber modules connected in series or parallel;
the reforming chamber module comprises a combustion tail gas cavity and a reforming chamber which is arranged in the combustion tail gas cavity and provided with a wave-shaped structure, the combustion tail gas cavity is connected with the combustion chamber module, combustion tail gas generated by catalytic combustion reaction of the combustion chamber module enters the combustion tail gas cavity, and heat is provided for the reforming chamber.
The reforming chamber module is of a cuboid structure; the reforming chamber modules are arranged in parallel, and the combustion tail gas cavities of two adjacent reforming chamber modules are transversely butted;
the head ends and the tail ends of the reforming cavities of two adjacent reforming cavity modules are sequentially connected in series through a reforming manifold, and the front end and the rear end of the whole reforming cavity are respectively provided with a reforming reaction methanol steam inlet and a reforming tail gas outlet.
Two reforming cavity cover plates with wavy structures are arranged in the combustion tail gas cavity in parallel, and wavy reforming cavities are formed between the two reforming cavity cover plates;
the wave crest of the reforming cavity cover plate positioned above is connected with the upper inner wall of the combustion tail air cavity, the wave trough of the reforming cavity cover plate positioned below is connected with the lower inner wall of the combustion tail air cavity, and a plurality of independent small cavities are formed on the upper side and the lower side of the reforming cavity.
The reforming chamber module is manufactured by means of aluminum extrusion.
The combustion chamber module comprises a combustion chamber and a combustion manifold I connected with the combustion chamber, wherein a combustion catalyst is arranged in the combustion chamber, and a combustion air inlet, an anode tail gas inlet and a starting fuel inlet are arranged at the front end of the combustion chamber.
The two sides of the reforming chamber modules are respectively provided with a combustion manifold II and a combustion manifold III, wherein the combustion manifold II is positioned between the combustion chamber modules and the reforming chamber modules, the rear end of the combustion manifold II is provided with a combustion tail gas inlet, and the combustion tail gas inlet is communicated with the tail end of the combustion manifold I; and a combustion tail gas outlet is arranged at the front end of the combustion manifold III.
A partition board I positioned at the front side of the combustion tail gas inlet is arranged in the combustion manifold II;
and a partition plate II positioned at the rear side of the combustion tail gas outlet is arranged in the combustion manifold III.
And a plurality of zigzag fins are arranged on the outer wall of the reforming cavity.
Another embodiment of the present invention provides for the use of a modular high efficiency hydrogen production fuel processor as described above for providing a desired reactant gas to a fuel cell unit.
The hydrogen-rich reaction gas generated by the modularized high-efficiency hydrogen production fuel processor enters a galvanic pile to participate in the reaction so as to generate power; and the redundant hydrogen-rich tail gas of the anode of the electric pile returns to the combustion chamber module to perform catalytic combustion, so as to provide heat for reforming.
The invention has the advantages and beneficial effects that: the modularized high-efficiency hydrogen production fuel processor provided by the invention has a highly compact structure, can be manufactured in an aluminum extrusion mode, is low in manufacturing cost and high in thermal efficiency, solves the problem that gas short circuit is easy to occur in granular catalyst deposition in a reforming chamber, is beneficial to the improvement of the volume ratio power of a fuel cell system, is convenient to amplify equipment, is especially suitable for the field of methanol steam reforming hydrogen production reaction in a high-power high-temperature proton exchange membrane fuel cell (HT-PEMFC), and effectively improves the efficiency of the fuel processor and the fuel cell system.
Drawings
FIG. 1 (A) is a schematic diagram of a modular high efficiency hydrogen production fuel processor of the present invention;
FIG. 1 (B) is a second schematic diagram of a modular high efficiency hydrogen production fuel processor according to the present invention;
FIG. 2 (A) is a schematic view of a combustion chamber module according to one embodiment of the present invention;
FIG. 2 (B) is a second schematic view of the combustion chamber module according to the present invention;
FIG. 3 (A) is a schematic diagram of a reforming chamber according to the present invention;
FIG. 3 (B) is a second schematic diagram of the reforming chamber according to the present invention;
FIG. 4 (A) is a schematic flow path diagram of a reforming chamber according to the prior art;
FIG. 4 (B) is a schematic view of a flow improvement of a reforming chamber according to the present invention;
FIG. 5 is a schematic view of the structure of the first and fifth reforming manifold chambers of the present invention;
fig. 6 is a schematic structural view of second to fourth reforming collecting chambers according to the present invention;
FIG. 7 is a schematic view of the structure of a combustion manifold II of the present invention;
FIG. 8 is a schematic view of the structure of a combustion manifold III of the present invention;
FIG. 9 is a schematic flow diagram of combustion exhaust in the present invention;
FIG. 10 is a schematic flow diagram of reformate gas in accordance with the invention;
in the figure: A. combustion air inlet, anode tail gas inlet, startup fuel inlet, combustion tail gas outlet, reforming reaction methanol steam inlet, reforming chamber module, 2, first reforming manifold, 3, second reforming manifold, 4, third reforming manifold, 5, fourth reforming manifold, 6, fifth reforming manifold, 7, combustion chamber, 8, combustion manifold I, 9, combustion catalyst, 10, combustion manifold II, 11, combustion manifold III, 12, combustion tail gas cavity, 13, reforming chamber cover, 14, reforming chamber, 15, reforming catalyst, 16, void, 17, combustion tail gas, 18, reforming reaction gas, 20, combustion chamber module, 21, separator I, 22, combustion tail gas inlet, 23, separator II.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 (a) -1 (B), one embodiment of the present invention provides a modular high efficiency hydrogen production fuel processor, comprising a combustion chamber module 20 and a plurality of reforming chamber modules 1 connected in series or parallel; the reforming chamber module 1 comprises a combustion tail gas cavity 12 and a reforming chamber 14 which is arranged in the combustion tail gas cavity 12 and has a wave-shaped structure, wherein the combustion tail gas cavity 12 is connected with the combustion chamber module 20; the reforming cavity 14 is filled with a granular reforming catalyst, and the reforming cavity 14 is internally provided with a methanol steam reforming endothermic reaction for reforming hydrogen production reaction; combustion exhaust generated by the catalytic combustion reaction in the combustion chamber module 20 enters the combustion exhaust chamber 12 to provide heat for the reforming endothermic reaction in the reforming chamber 14.
In the embodiment of the invention, the reforming chamber module 1 has a cuboid structure; the reforming chamber modules 1 are arranged in parallel, and the combustion tail gas cavities 12 of two adjacent reforming chamber modules 1 are transversely butted; the head and tail ends of the reforming cavities 14 of two adjacent reforming cavity modules 1 are sequentially connected in series through reforming manifold, and the front and rear ends of the whole reforming cavities are respectively provided with a reforming reaction methanol steam inlet F and a reforming tail gas outlet E.
As shown in fig. 9-10, in this embodiment, the number of reforming chamber modules 1 is four, a first reforming manifold 2 communicating with the reforming chamber 14 is provided at the front end of the first reforming chamber module 1, and a reforming reaction methanol steam inlet F is provided at the front end of the first reforming manifold 2; the reforming chambers 14 in the first to fourth reforming chamber modules 1 are sequentially connected in series through the second reforming manifold 3, the third reforming manifold 4 and the fourth reforming manifold 5, the front end of the fourth reforming chamber module 1 is provided with a fifth reforming manifold 6 communicated with the reforming chamber 14, and the front end of the fifth reforming manifold 6 is provided with a reformed tail gas outlet E. That is, the first, third and fifth reforming manifolds 2, 4 and 6 are located at the front ends of the four reforming chamber modules 1, and the second and fourth reforming manifolds 3 and 5 are located at the rear ends of the four reforming chamber modules 1, so that the reforming chambers 14 of the four reforming chamber modules 1 are connected in series in a meandering flow path.
Specifically, as shown in fig. 5, the first reforming manifold 2 and the fifth reforming manifold 6 have the same structure, and include a housing and a reforming reaction methanol steam inlet F or a reforming exhaust outlet E provided at the front end of the housing. As shown in fig. 6, the reforming manifold 3, the third reforming manifold 4, and the fourth reforming manifold 5 have the same structure and each include a square housing.
As shown in fig. 2 (a) -2 (B), in the embodiment of the present invention, the combustion chamber module 20 includes a combustion chamber 7 and a combustion manifold i 8 connected to the combustion chamber 7, wherein a combustion catalyst 9 is disposed in the combustion chamber 7, a combustion air inlet a, an anode tail gas inlet B and a starting fuel inlet C are disposed at a front end of the combustion chamber 7, and the combustion manifold i 8 is disposed at a rear side of the combustion chamber 7.
As shown in fig. 1 (B), in the embodiment of the present invention, two sides of the reforming chamber modules 1 are respectively provided with a combustion manifold ii 10 and a combustion manifold iii 11, wherein the combustion manifold ii 10 is located between the combustion chamber module 20 and the reforming chamber modules 1, combustion exhaust gas in the combustion manifold i 8 in the combustion chamber module 20 enters the combustion manifold ii 10, and a combustion exhaust gas outlet D is provided at the front end of the combustion manifold iii 11.
As shown in fig. 7, in the embodiment of the present invention, the rear end of the combustion manifold ii 10 is provided with a combustion exhaust gas inlet 22, and the combustion exhaust gas inlet 22 communicates with the end of the combustion manifold i 8; further, a partition board I21 positioned at the front side of the combustion tail gas inlet 22 is arranged in the combustion manifold II 10, and the partition board I21 divides the combustion manifold II 10 into two chambers. As shown in fig. 8, a partition plate ii 23 is provided in the combustion manifold iii 11 at the rear side of the combustion exhaust gas outlet D, and the partition plate ii 23 also divides the combustion manifold iii 11 into two chambers.
In the present embodiment, the combustion chamber 7 houses the combustion catalyst 9, and one or more may be arranged as needed. The combustion tail gas can be made into serial connection or parallel connection by simple baffling of the current collecting plate, and the equipment is amplified by serial and parallel arrangement and combination with the reforming chamber module.
As shown in fig. 3 (a) -3 (B), in the embodiment of the present invention, two reforming chamber cover plates 13 with wavy structures are provided in parallel in the combustion tail gas chamber 12, and a wavy reforming chamber 14 is formed between the two reforming chamber cover plates 13. Further, the wave crest of the reforming cavity cover plate 13 positioned above is connected with the upper inner wall of the combustion tail gas cavity 12, the wave trough of the reforming cavity cover plate 13 positioned below is connected with the lower inner wall of the combustion tail gas cavity 12, and a plurality of independent small cavities are formed on the upper side and the lower side of the reforming cavity 14. The small chambers in the adjacent two reforming chamber modules 1 are in one-to-one correspondence, so that a combustion tail flow channel is formed along the transverse direction and communicated with a combustion manifold II 10 and a combustion manifold III 11 respectively at two sides, as shown in fig. 9.
Specifically, the reforming chamber module 1 is manufactured by an aluminum extrusion mode, the combustion tail gas cavity 12 is arranged at the periphery, the reforming cavity 14 is arranged at the center, the reforming cavity 14 is wrapped by the combustion tail gas cavity 12, the heat area is increased, the heat exchange capacity is enhanced, and the reforming cavity 14 is filled with a granular reforming catalyst for reforming hydrogen production reaction. The reforming chamber 14 adopts a wave-shaped flow passage design, so that gas short circuit caused by catalyst deposition in the reforming chamber is avoided.
Further, the outer wall of the reforming chamber 14 is provided with a plurality of zigzag fins, so that heat is more uniformly transferred to the heat-absorbing reforming chamber 14.
FIG. 4 (A) is a schematic flow path diagram of a reforming chamber according to the prior art; as shown in fig. 4 (a), since the reforming granular catalyst is settled during use, if a conventional majority of flat cavity designs are adopted, the reformed reaction gas directly flows away from the void 16 formed by settling above to form a "short circuit", and is not fully contacted with the catalyst, thus greatly reducing the reforming efficiency. FIG. 4 (B) is a schematic view of a flow improvement of a reforming chamber according to the present invention; as shown in fig. 4 (B), the reforming chamber 14 adopts a wave-shaped flow channel design, the gaps 16 are collected at the wave peaks of the flow channels after the catalyst is settled, but the main flow channels are still full of catalyst, and the reaction gas can fully contact with the catalyst through the wave-shaped flow channels to fully react, so that the problem that gas short circuit is easy to occur in the reforming chamber is solved.
In the embodiment of the invention, the reforming cavity 14 is wrapped by the combustion tail gas cavity 12, the bed layer thickness in the reforming cavity 14 is always kept constant at 15-25mm due to the wavy flow passage design, compared with the traditional straight flow passage, the filling quantity of reforming catalyst in unit volume is increased, the processing capacity of a processor is improved, and the volume specific power of the whole fuel cell system is improved. It can be seen from fig. 4 (a) that the filling volume of the original conventional straight flow channel reforming catalyst occupies 1/3 of the whole cavity, and that the filling volume of the wavy flow channel reforming catalyst of fig. 4 (B) occupies 2/3 of the whole cavity, so that the filling volume of the catalyst can be larger through the adjustment of the wavy angle under the condition that the thickness of the bed layer is unchanged; meanwhile, compared with the traditional straight flow passage, the wavy flow passage shortens the heat transfer distance of the reforming chamber, increases the heat transfer specific surface area and ensures that the catalyst in unit volume receives more heat; the peripheral zigzag fins enable more and more uniform heat conduction to the endothermic reforming cavity 14, which is beneficial to the efficient simultaneous start-up stage of the reforming reaction for rapid heating. The contact area between the reforming chamber 14 with the wavy flow passage and the combustion tail gas chamber 12 is more than 50% larger than that of the straight flow passage.
As shown in fig. 9-10, in the embodiment of the present invention, the combustion exhaust gas flow channel is three-pass series connection, the reforming chamber flow channel is four-pass series connection, the combustion exhaust gas and the reforming chamber 14 perform cross-flow heat transfer, and the thermal efficiency is high; meanwhile, the reforming chamber modules 1 can be arranged in series and in parallel, and are connected in a welding mode, so that stacking combination can be conveniently performed, equipment amplification is easy to perform, the arrangement of the combustion chamber can also be changed along with the arrangement change of the reforming chamber modules, and the method is particularly suitable for the field of hydrogen production reaction by reforming methanol and steam in a high-power high-temperature proton exchange membrane fuel cell (HT-PEMFC), and the efficiency of a fuel processor and a fuel cell system is effectively improved.
In the system starting stage, the methanol aqueous solution enters the combustion chamber 7 from the starting fuel inlet C after being evaporated to perform catalytic combustion, and after the system meets the starting conditions, the starting fuel supply is closed; after the aqueous solution of methanol is vaporized by external evaporation, the aqueous solution of methanol enters the reforming cavity 14 through the reforming reaction methanol steam inlet F, hydrogen produced by the reaction is discharged through the reforming tail gas outlet E and is used as fuel of a cell stack anode, the fuel cell stack is used for generating electricity, and the tail gas of the cell stack anode returns to the combustion chamber 7 for catalytic combustion, so that the normal operation of the system is maintained.
Another embodiment of the present invention provides the use of a modular high efficiency hydrogen production fuel processor as in any of the embodiments above for providing a desired reactant gas to a fuel cell unit.
Specifically, the hydrogen-rich reaction gas generated by the modularized high-efficiency hydrogen production fuel processor enters a galvanic pile to participate in the reaction so as to generate power. The excess hydrogen-rich tail gas from the stack anode is returned to the combustion chamber module 20 for catalytic combustion to provide heat for reforming.
During operation, in the system starting stage, the reforming reaction liquid enters the combustion chamber 7 through the starting fuel inlet C after being evaporated, and catalytic combustion heat release is carried out; in the system operation stage, cathode and anode tail gas of the galvanic pile is mixed to be used as a burner fuel, the fuel enters the combustion chamber 7 through the anode tail gas inlet B to catalyze combustion to release heat, and the combustion tail gas is discharged from the combustion tail gas D; the reforming reaction liquid enters the reforming cavity 14 of the reforming cavity module 1 through the reforming reaction methanol steam inlet F, fully reacts to generate hydrogen-rich reaction gas through an S-shaped flow channel in the reforming cavity 14, the hydrogen-rich reaction gas is discharged from the reforming tail gas outlet E and enters a galvanic pile to participate in the reaction, and redundant hydrogen-rich tail gas enters the combustion cavity 7 through the anode tail gas inlet B to be catalytically combusted so as to provide heat for reforming.
Examples
Taking the fuel processor of the invention for the hydrogen production process of the methanol steam reforming as an example, taking 60% volume content of methanol aqueous solution as a reforming reaction liquid, and the mass flow rate is 0.0087kg/s, in the system starting stage, evaporating and catalyzing the methanol aqueous solution with the mass flow rate of 0.006kg/s for combustion, introducing air with the mass flow rate of 1000-1200L/min until the temperature of a combustion chamber is between 350 and 450 ℃, closing the starting fuel supply after the system meets the starting condition, introducing reforming fuel for starting reforming, and generating hydrogen to enter a galvanic pile anode for reacting for generating electricity. And then the residual tail gas of the anode of the electric pile returns to the combustion chamber to be catalyzed and combusted, the catalyst is platinum alumina, the platinum content is 0.5%, the reforming reaction liquid is vaporized by external evaporation to about 160 ℃ and then enters the reforming chamber 14, the chamber temperature of the reforming chamber 14 is between 220 ℃ and 300 ℃, and CuO/ZnO/Al is filled between the chamber temperature and the reforming chamber temperature 2 O 3 Catalyst, cuO mass fraction is 50%, znO mass fraction is 10%, al 2 O 3 The mass fraction is 40%, the total reforming catalyst filling mass is 20kg, the total reforming catalyst filling mass is about 5kg more than that of the traditional straight flow channel, the hydrogen content of reformed tail gas is about 65% (mol volume), the hydrogen standard condition flow is about 480L/min, and the carbon monoxide content is lower than 1% (mol volume), as a fuel of a galvanic pile anode, the total reforming catalyst can be used for hydrogen meeting the working condition of 30kW of the generated energy of the galvanic pile operation of a fuel cell; the heat of the combustion chamber and the tail heat thereof in the starting stage is directly and rapidly transferred to the reforming cavity, and the temperature is increased from the normal temperature of 25 ℃ to 300 ℃ for 15-20 min, so that the temperature is rapidly increased, and the starting time is shortened.
The invention provides a modularized high-efficiency hydrogen production fuel processor which has a highly compact structure, can be manufactured in an aluminum extrusion mode, has low manufacturing cost and high thermal efficiency, solves the problem of easy occurrence of gas short circuit in a reforming chamber, is convenient to amplify equipment, is particularly suitable for the field of methanol steam reforming hydrogen production reaction in a high-power high-temperature proton exchange membrane fuel cell (HT-PEMFC), and effectively improves the efficiency of the fuel processor and a fuel cell system.
The foregoing is merely an embodiment of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, expansion, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (10)

1. A modular high efficiency hydrogen production fuel processor comprising: a combustion chamber module (20) and a plurality of reforming chamber modules (1) connected in series or in parallel;
the reforming chamber module (1) comprises a combustion tail gas cavity (12) and a reforming chamber (14) which is arranged in the combustion tail gas cavity (12) and provided with a wave-shaped structure, wherein the combustion tail gas cavity (12) is connected with the combustion chamber module (20), and combustion tail gas generated by catalytic combustion reaction of the combustion chamber module (20) enters the combustion tail gas cavity (12) to provide heat for the reforming chamber (14).
2. A modular high efficiency hydrogen production fuel processor as claimed in claim 1, wherein the reforming chamber module (1) is of cuboid construction; the reforming chamber modules (1) are arranged in parallel, and the combustion tail gas chambers (12) of two adjacent reforming chamber modules (1) are transversely butted;
the head ends and the tail ends of the reforming cavities (14) of two adjacent reforming cavity modules (1) are sequentially connected in series through reforming manifold, and the front end and the rear end of the whole reforming cavity are respectively provided with a reforming reaction methanol steam inlet (F) and a reforming tail gas outlet (E).
3. A modular high-efficiency hydrogen production fuel processor as claimed in claim 2, wherein two reforming cavity cover plates (13) with wave-shaped structures are arranged in parallel in the combustion tail gas cavity (12), and the reforming cavity (14) with wave shape is formed between the two reforming cavity cover plates (13);
the wave crest of the reforming cavity cover plate (13) positioned above is connected with the upper inner wall of the combustion tail gas cavity (12), the wave trough of the reforming cavity cover plate (13) positioned below is connected with the lower inner wall of the combustion tail gas cavity (12), and a plurality of independent small cavities are formed on the upper side and the lower side of the reforming cavity (14).
4. A modular high efficiency hydrogen production fuel processor as claimed in claim 3, wherein the reforming chamber module (1) is manufactured by means of aluminium extrusion.
5. The modular high-efficiency hydrogen-producing fuel processor as in claim 2, wherein the combustion chamber module (20) comprises a combustion chamber (7) and a combustion manifold (8) connected with the combustion chamber (7), wherein a combustion catalyst (9) is arranged in the combustion chamber (7), and a combustion air inlet (a), an anode tail gas inlet (B) and a starting fuel inlet (C) are arranged at the front end of the combustion chamber (7).
6. A modular high efficiency hydrogen production fuel processor as claimed in claim 5, wherein two sides of a plurality of said reforming chamber modules (1) are respectively provided with a combustion manifold ii (10) and a combustion manifold iii (11), wherein the combustion manifold ii (10) is located between said combustion chamber modules (20) and said reforming chamber modules (1), a combustion exhaust gas inlet (22) is provided at the rear end of the combustion manifold ii (10), and the combustion exhaust gas inlet (22) communicates with the end of said combustion manifold i (8); the front end of the combustion manifold III (11) is provided with a combustion tail gas outlet (D).
7. The modularized high-efficiency hydrogen production fuel processor as in claim 6 wherein a baffle plate i (21) positioned in front of a combustion tail gas inlet (22) is arranged in the combustion manifold ii (10);
a partition plate II (23) positioned at the rear side of the combustion tail gas outlet (D) is arranged in the combustion manifold III (11).
8. A modular high efficiency hydrogen production fuel processor as in claim 2 wherein a plurality of zigzag fins are provided on the outer wall of the reforming chamber (14).
9. Use of a modular high efficiency hydrogen production fuel processor as claimed in any one of claims 1 to 8 for providing a fuel cell unit with a desired reactant gas.
10. The use according to claim 9, wherein the hydrogen-rich reaction gas generated by the modularized high-efficiency hydrogen production fuel processor enters a galvanic pile to participate in the reaction, so as to generate electricity; the redundant hydrogen-rich tail gas of the anode of the electric pile returns to the combustion chamber module (20) to perform catalytic combustion, and heat is provided for reforming.
CN202211346540.6A 2022-10-31 2022-10-31 Modularized efficient hydrogen production fuel processor and application Pending CN116470106A (en)

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CN202211346540.6A CN116470106A (en) 2022-10-31 2022-10-31 Modularized efficient hydrogen production fuel processor and application

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