CN111302306A - Miniature methanol reforming hydrogen production reactor for high-temperature fuel cell - Google Patents
Miniature methanol reforming hydrogen production reactor for high-temperature fuel cell Download PDFInfo
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- CN111302306A CN111302306A CN202010291676.6A CN202010291676A CN111302306A CN 111302306 A CN111302306 A CN 111302306A CN 202010291676 A CN202010291676 A CN 202010291676A CN 111302306 A CN111302306 A CN 111302306A
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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
- 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
- C01B3/323—Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents
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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
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic 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
- C01B2203/06—Integration with other chemical processes
- C01B2203/066—Integration with other chemical processes with fuel cells
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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
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1217—Alcohols
- C01B2203/1223—Methanol
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- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a miniature methanol reforming hydrogen production reactor which can be used for a high-temperature fuel cell. The technical scheme of the invention is as follows: the micro methanol reformer comprises a main body, the main body comprises an upper cover plate, a gasification chamber, a reaction chamber and a lower cover plate, and the high-temperature fuel cell comprises an air inlet, an anode outlet and a fuel cell tail gas outlet; the gasification chamber comprises a combustion gasification chamber and a reforming gasification chamber, and a gasification micro-channel, a methanol steam and air mixing cavity, a heating rod hole, a methanol water inlet, an air inlet and a hydrogen back-burning pipe connected with a high-temperature fuel cell are arranged in the combustion gasification chamber; and a gasification micro-channel, a methanol water inlet and a methanol steam outlet are arranged in the reforming gasification chamber. The scheme provided by the invention is compact in structure and is suitable for 10-50W fuel cells.
Description
Technical Field
The invention relates to the field of reforming hydrogen production, in particular to a miniature methanol reforming hydrogen production reactor for a high-temperature fuel cell.
Background
With the increasing importance of micro power supplies of micro aircrafts, micro robots and portable electronic products, the low energy density of lithium batteries is a big problem of the existing micro power supplies, and the energy density of micro fuel batteries is higher than that of the lithium batteries and can be used as a substitute power supply. Among various types of fuel cells, Proton Exchange Membrane Fuel Cells (PEMFCs) and Direct Methanol Fuel Cells (DMFCs) are widely used in portable power sources due to their low use temperature and simple structure. Compared with PEMFCs, DMFCs have the advantages of small size, light weight, simple structure, and convenient use of fuel, and are earlier studied and applied in micro power supplies, but have technical problems of low methanol permeation and methanol oxidation rate. Proton exchange membrane fuel cells have been prevented from commercial deployment by hydrogen storage and transport, and therefore, the technology of hydrogen production by methanol steam reforming has been developed. The micro methanol reforming hydrogen production reactor is a reactor for producing and using hydrogen, and can solve the problems of hydrogen transportation, storage and the like to a great extent, so that the combination of the micro methanol reforming hydrogen production reactor and a fuel cell is bound to be a mainstream technical path of a future micro power supply.
Disclosure of Invention
Aiming at the defects in the prior art, the invention mainly aims to provide a miniature methanol reforming hydrogen production reactor which is compact in structure and suitable for a 10-50W fuel cell.
In order to achieve the purpose, the invention provides the following technical scheme: a micro methanol reforming hydrogen production reactor for a high-temperature fuel cell comprises a micro methanol reformer and the high-temperature fuel cell connected with the micro methanol reformer, wherein the micro methanol reformer comprises a main body, the main body comprises an upper cover plate, a gasification chamber, a reaction chamber and a lower cover plate, and the high-temperature fuel cell comprises an air inlet, an anode outlet and a fuel cell tail gas outlet; the gasification chamber comprises a combustion gasification chamber and a reforming gasification chamber, and a gasification micro-channel, a methanol steam and air mixing cavity, a heating rod hole, a methanol water inlet, an air inlet and a hydrogen back-burning pipe connected with a high-temperature fuel cell are arranged in the combustion gasification chamber; a gasification micro-channel, a methanol water inlet and a methanol steam outlet are arranged in the reforming gasification chamber, and the gasification micro-channel is a snake-shaped channel; one side of the reaction chamber is provided with a snakelike combustion chamber micro-channel with combustion catalyst, and the other side is provided with a snakelike reforming chamber micro-channel.
Preferably, the methanol vapour is in countercurrent flow with the combustion feed.
Preferably, the methanol steam and the air are mixed in the methanol steam and air mixing cavity and then enter the combustion gasification chamber.
Compared with the prior art, the invention has the advantages that the reforming chamber and the combustion chamber in the miniature methanol reforming hydrogen production reactor adopt the serpentine flow channel, the methanol conversion rate of the serpentine flow channel is superior to that of other flow field designs, and the micro-reforming methanol conversion rate is improved by about 18-23%; the temperature distribution of the methanol reforming hydrogen production with the serpentine flow channel and the methanol catalytic combustion chamber with the serpentine flow channel is higher; an endothermic methanol steam reforming reaction and an exothermic methanol catalytic combustion reaction are organically coupled in the reactor. The heat required by reforming reaction comes from the heat released by methanol (or hydrogen) catalytic combustion, and the whole reactor adopts an autothermal operation mode, so that the energy utilization rate is high. The hydrogen production amount of the micro methanol reforming hydrogen production reactor can be used for generating power for a fuel cell of 10-50W.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a micro methanol reforming hydrogen production reactor that can be used in a high temperature fuel cell according to the present invention;
FIG. 2 is an exploded view of a miniature methanol reforming hydrogen production reactor useful in a high temperature fuel cell of the present invention;
fig. 3 is a left side exploded view of a micro methanol reforming hydrogen production reactor useful in a high temperature fuel cell in accordance with the present invention;
fig. 4 is an exploded top-down view of a micro methanol reforming hydrogen production reactor useful in high temperature fuel cells in accordance with the present invention.
In the figure: 1. an upper cover plate; 2. a gasification chamber; 3. a methanol steam inlet pipe; 4. a methanol water inlet; 5. a methanol water inlet; 6. an air inlet; 7. a reaction chamber; 8. a lower cover plate; 9. a combustion tail gas outlet; 10. a heater rod bore; 11. an anode gas inlet; 12. a reforming gasification chamber; 13. a combustion gasification chamber; 14. a methanol steam and air mixing cavity; 15. a hydrogen burn-back tube; 16. a combustion chamber microchannel; 17. a reformer chamber microchannel; 18. a high temperature fuel cell; 19. an air inlet; 20. and a fuel cell tail gas outlet.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, a micro methanol reforming hydrogen production reactor for a high temperature fuel cell comprises a micro methanol reformer and a high temperature fuel cell 18 connected with the micro methanol reformer, wherein the micro methanol reformer comprises a main body, the main body comprises an upper cover plate 1, a gasification chamber 2, a reaction chamber 7 and a lower cover plate 8, and the high temperature fuel cell 18 comprises an air inlet 19, an anode inlet 11, an anode outlet and a fuel cell tail gas outlet 20; the gasification chamber 2 comprises a combustion gasification chamber 13 and a reforming gasification chamber 12, wherein a gasification micro-channel, a methanol steam and air mixing cavity 14, a heating rod hole 10, a methanol water inlet 4, an air inlet 6 and a hydrogen back-burning pipe 15 connected with a high-temperature fuel cell 18 are arranged in the combustion gasification chamber 13; a gasification micro-channel, a methanol water inlet 4 and a methanol steam outlet are arranged in the reforming gasification chamber 12, and the gasification micro-channel is a snake-shaped channel; and a serpentine combustion chamber micro-channel 16 with a combustion catalyst is arranged on one side of the reaction chamber 7, and a serpentine reforming chamber micro-channel 17 is arranged on the other side of the reaction chamber.
Preferably, the methanol vapour is in countercurrent flow with the combustion feed.
Preferably, the methanol vapor and the air are mixed in the methanol vapor and air mixing chamber 14 and then enter the combustion gasification chamber 13.
The miniature methanol reforming hydrogen production reactor for the high-temperature fuel cell 18 mainly comprises the miniature methanol reforming hydrogen production reactor and the high-temperature fuel cell 18, wherein the miniature methanol reforming hydrogen production reactor can provide a hydrogen source for the fuel cell of 10-50W, and comprises an upper cover plate 1, a gasification chamber 2, a reaction chamber 7 and a lower cover plate 8, as shown in figure 2, the miniature methanol reforming hydrogen production reactor is compact in structure, easy in control of catalytic combustion reaction and reforming reaction temperature, high in energy utilization rate and has the advantages of energy conservation and environmental protection.
When the temperature reaches the gasification temperature of the methanol water, the gasification process of the methanol water is completed, the methanol gasification runner adopts a serpentine runner to strengthen the gasification of the methanol water, and the methanol water vapor and the air complete gas mixing in the cavity and enter the combustion chamber together. The reforming gasification chamber 12 is provided with a gasification micro flow channel, a methanol water inlet 4 and a methanol steam outlet. The gasification heat is derived from the heat of combustion reaction in the combustion chamber and electric heating auxiliary heat. One side of the reaction chamber 7 is a combustion chamber micro-channel 16, and the other side is a reforming chamber micro-channel 17; a reaction flow channel is arranged in the combustion chamber, the reaction flow channel adopts a snake-shaped flow channel, a combustion catalyst is loaded in the micro-channel, the mixed gas of methanol steam and air enters the combustion chamber, smokeless combustion is realized under the action of the combustion catalyst, the generated heat is transferred to a reforming chamber at the other side of the reaction chamber 7 through a metal plate of the micro-fin, heat energy at 200-300 ℃ can be provided, and combustion tail gas is discharged through an outlet; be equipped with methanol steam import and reformed gas export in the reforming chamber, be equipped with snakelike runner's reaction chamber in the reforming chamber, methanol steam passes through the import and gets into the reforming chamber, forms the adverse current with the combustion feed liquid, strengthens the heat transfer, takes place methanol steam reforming, the chemical reaction who relates to under reforming catalyst's effect: (1) CH3OH + H2O → CO2+3H2, (2) CH3OH → CO +2H2, (3) H2O + CO → CO2+ H2, to generate a high-temperature mixed gas mainly containing CO2 and H2 with a slight amount of CO; the reactor not only can make the whole micro-reactor start and operate by self-heating, does not need the external heat source, but also can greatly improve the reaction efficiency of methanol steam reforming hydrogen production.
The high-temperature fuel cell 18 mainly comprises an air inlet 6, anode intake air, a hydrogen return combustion pipe 15 and a fuel cell tail gas outlet 20, reformed gas enters the electric pile through the anode intake air to provide hydrogen for the electric pile, the anode hydrogen and cathode oxygen generate electrochemical reaction on the combustion cell to generate electric energy, water vapor and heat energy, the generated water vapor is discharged through the combustion tail gas outlet, and the heat generated by the system is provided for the high-temperature fuel cell 18 to maintain the heat balance of the system.
The micro methanol reforming hydrogen production reactor and the high temperature fuel cell 18 are combined into a micro methanol reforming hydrogen production fuel cell system by the mode of figure 1. When the temperature of the combustion gasification chamber 13 is heated to 100-120 ℃, methanol water enters a gasification micro-channel to start preheating, and simultaneously, with the addition of oxygen, flameless combustion reaction occurs in the combustion chamber micro-channel to generate heat, and the temperature of the combustion chamber rises rapidly; the temperature of adjacent reforming chambers is gradually increased by the transfer of heat through the micro-fins, when the temperature of the reforming chambers reaches approximately 220-260 ℃, a mixture of methanol and water is introduced, the gasification process of methanol and water is completed in the micro-channel of the reforming gasification chamber 12, methanol steam enters the reforming chambers, and a methanol steam reforming reaction is carried out under the action of a reforming catalyst to generate reformed gas, wherein the reformed gas mainly comprises hydrogen, CO2 and trace CO; the reformed gas can directly enter the high-temperature electric pile to provide a hydrogen source for the fuel cell.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (3)
1. A miniature methanol reforming hydrogen production reactor for a high-temperature fuel cell comprises a miniature methanol reformer and the high-temperature fuel cell connected with the miniature methanol reformer, and is characterized in that: the micro methanol reformer comprises a main body, the main body comprises an upper cover plate, a gasification chamber, a reaction chamber and a lower cover plate, and the high-temperature fuel cell comprises an air inlet, an anode outlet and a fuel cell tail gas outlet; the gasification chamber comprises a combustion gasification chamber and a reforming gasification chamber, and a gasification micro-channel, a methanol steam and air mixing cavity, a heating rod hole, a methanol water inlet, an air inlet and a hydrogen back-burning pipe connected with a high-temperature fuel cell are arranged in the combustion gasification chamber; a gasification micro-channel, a methanol water inlet and a methanol steam outlet are arranged in the reforming gasification chamber, and the gasification micro-channel is a snake-shaped channel; one side of the reaction chamber is provided with a snakelike combustion chamber micro-channel with combustion catalyst, and the other side is provided with a snakelike reforming chamber micro-channel.
2. The miniature methanol reforming hydrogen production reactor usable with a high temperature fuel cell as recited in claim 1, wherein: the methanol steam and the combustion feed liquor form a counter flow.
3. The miniature methanol reforming hydrogen production reactor usable with a high temperature fuel cell as recited in claim 1, wherein: the methanol steam and the air are mixed in the methanol steam and air mixing cavity and then enter the combustion gasification chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291676.6A CN111302306A (en) | 2020-04-14 | 2020-04-14 | Miniature methanol reforming hydrogen production reactor for high-temperature fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291676.6A CN111302306A (en) | 2020-04-14 | 2020-04-14 | Miniature methanol reforming hydrogen production reactor for high-temperature fuel cell |
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| Publication Number | Publication Date |
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| CN111302306A true CN111302306A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010291676.6A Withdrawn CN111302306A (en) | 2020-04-14 | 2020-04-14 | Miniature methanol reforming hydrogen production reactor for high-temperature fuel cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701322A (en) * | 2020-12-08 | 2021-04-23 | 南京氢创能源科技有限公司 | Vehicle-mounted hydrogen supply system |
| CN113707920A (en) * | 2021-08-27 | 2021-11-26 | 中南大学 | Alcohol reforming fuel cell system |
| CN113735059A (en) * | 2021-08-23 | 2021-12-03 | 中南大学 | Alcohol reforming microreactor and hydrogen production method |
| CN114976164A (en) * | 2022-06-21 | 2022-08-30 | 哈尔滨工业大学（深圳） | Highly integrated thermal self-sustaining methanol reforming fuel cell device |
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| CN105529482A (en) * | 2016-01-28 | 2016-04-27 | 苏州氢洁电源科技有限公司 | Methanol fuel cell system |
| CN205944261U (en) * | 2016-08-25 | 2017-02-08 | 晋城市阿邦迪能源有限公司 | Methanol reforming reactor and small -size fuel cell power generation system |
| CN108206289A (en) * | 2016-12-19 | 2018-06-26 | 中氢新能技术有限公司 | One kind prepares fuel cell based on first alcohol and water reformation |
-
2020
- 2020-04-14 CN CN202010291676.6A patent/CN111302306A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529482A (en) * | 2016-01-28 | 2016-04-27 | 苏州氢洁电源科技有限公司 | Methanol fuel cell system |
| CN205944261U (en) * | 2016-08-25 | 2017-02-08 | 晋城市阿邦迪能源有限公司 | Methanol reforming reactor and small -size fuel cell power generation system |
| CN108206289A (en) * | 2016-12-19 | 2018-06-26 | 中氢新能技术有限公司 | One kind prepares fuel cell based on first alcohol and water reformation |
Non-Patent Citations (1)
| Title |
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| 马克东等: "微型反应器中生物质甲醇催化转化制氢的研究", 《中国沼气》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701322A (en) * | 2020-12-08 | 2021-04-23 | 南京氢创能源科技有限公司 | Vehicle-mounted hydrogen supply system |
| CN112701322B (en) * | 2020-12-08 | 2024-04-26 | 南京氢创能源科技有限公司 | Vehicle-mounted hydrogen supply system |
| CN113735059A (en) * | 2021-08-23 | 2021-12-03 | 中南大学 | Alcohol reforming microreactor and hydrogen production method |
| CN113735059B (en) * | 2021-08-23 | 2023-09-22 | 中南大学 | Alcohol reforming micro-reactor and hydrogen production method |
| CN113707920A (en) * | 2021-08-27 | 2021-11-26 | 中南大学 | Alcohol reforming fuel cell system |
| CN113707920B (en) * | 2021-08-27 | 2022-10-11 | 中南大学 | Alcohol reforming fuel cell system |
| CN114976164A (en) * | 2022-06-21 | 2022-08-30 | 哈尔滨工业大学（深圳） | Highly integrated thermal self-sustaining methanol reforming fuel cell device |
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Application publication date: 20200619 |