WO2001035479A1 - Procede de purification du combustible d'une cellule a combustible - Google Patents
Procede de purification du combustible d'une cellule a combustibleInfo
- Publication number
- WO2001035479A1 WO2001035479A1 PCT/JP2000/007727 JP0007727W WO0135479A1 WO 2001035479 A1 WO2001035479 A1 WO 2001035479A1 JP 0007727 W JP0007727 W JP 0007727W WO 0135479 A1 WO0135479 A1 WO 0135479A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- carbon monoxide
- hydrogen
- purifying
- gas
- Prior art date
Links
Classifications
-
- 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
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- 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
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
-
- 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
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
-
- 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
- C01B2203/0465—Composition of the impurity
- C01B2203/047—Composition of the impurity the impurity being carbon monoxide
-
- 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
Definitions
- the present invention relates to a solid polymer fuel cell and a fuel ⁇ production of a phosphoric acid type fuel cell, and is a fuel obtained by hydrogenating a hydro-carbon such as methanol or methane gas through a reformer or the like.
- the present invention relates to a purification method for selectively removing and purifying carbon monoxide from gas. Background art
- Hydrogen which is used as fuel for polymer electrolyte fuel cells and phosphoric acid fuel cells, has difficulties in transporting, storing, and handling. However, these cells tend to use hydrogen as a fuel. In these batteries, carbon monoxide slightly remaining in the fuel is adsorbed at the active site of an electrode catalyst such as platinum and inhibits the electrode reaction and deteriorates the electrode. However, a major issue was the measures to remove carbon monoxide. Particularly in the case of a solid polymer fuel cell operated at a relatively low temperature, even in the presence of a very small amount of carbon monoxide, the cell characteristics are significantly degraded at high current densities.
- the present invention effectively removes carbon monoxide without using a platinum catalyst which is expensive and may be poisoned by carbon monoxide, and without oxidizing and erasing hydrogen.
- the consumption of hydrogen is reduced as much as possible, and the cost of catalyst and catalyst fiber VI are reduced.
- the present invention is based on (1) the fact that hydrogen and carbon monoxide react well in a low-temperature plasma state due to discharge, and the initial reaction product is formaldehyde. (2) As the reaction progresses, formaldehyde is converted into various types of It becomes a complex product with a mixture of oils and fats. 3 Therefore, if formaldehyde generated at the beginning is removed from the reaction field and subsequent secondary reaction and polymerization reaction are avoided, the formation of formaldehyde is limited. It was invented by paying attention to well-known facts such as what can be done, and that formaldehyde is soluble in water. That is, as means for solving the problem, the invention according to claim 1 is characterized in that a trace amount of carbon monoxide remaining in hydrogen is removed by reacting with hydrogen by low-temperature plasma generated by discharge. This is a method for purifying fuel for fuel cells.
- the discharge is a corona discharge.
- FIG. 1 shows an explanatory river flow sheet of an embodiment of the present invention.
- FIG. 1 shows a front sheet for explanation of an example of the form of the present invention.
- elementary fuels 1 such as hydrocarbons and methanol are hydrogenated in a steam reformer 2 and then passed through a carbon monoxide converter 3 to obtain 0.2%, as is known.
- Aqueous gas rich ⁇ 4 containing ⁇ 2% of carbon monoxide is obtained.
- this raw gas 4 is supplied to a discharge device [S9] composed of a high-frequency high-voltage power source 8 connecting the high-voltage electrode 6 connecting the discharge projection 5 and the ground electrode 7, etc.
- Hydrogen and a small amount of carbon monoxide generate formaldehyde by the action of low-temperature plasma generated by the discharge.
- a gas containing a small amount of formaldehyde is led to the absorption tank 11 by the blower 10 and the water 13 sprayed by the nozzle 12 absorbs the formaldehyde into the water to store an aqueous solution 14 of formaldehyde. Discharge outside.
- the purified gas from which carbon monoxide has been removed in this way is checked for the absence of carbon monoxide by a gas analyzer 16 provided in a gas line 15 and stored in a purified gas storage tank 17. Supplied to fuel cells 18 such as molds. In this way, carbon monoxide is effectively removed as a water-soluble formaldehyde by the reduction action of hydrogen, so that hydrogen consumption due to oversupply of oxygen can be prevented, and an expensive platinum-based catalyst can be prevented. No medium is required.
- the switching valve 19 provided in the gas line is switched by the signal from the analyzer 16 to remove some of the gas. By recirculating all or a whole through bypass 20, carbon monoxide can be completely removed.
- an optimal gas circulation amount can always be maintained. It is easy to prevent the formation of secondary and subsequent reactants due to gas recirculation and the generation of carbon monoxide due to these ⁇ ⁇ ⁇ reactions.
- the absorption tank 11 may not be a spray-type using the nozzles 12 but may be a known multi-stage shackle type or a lashing type.
- the recovered formaldehyde can be used as a basic chemical, such as the mature tree ifji material, as is well known.
- carbon monoxide is reduced and removed with hydrogen under low-temperature plasma, so that the expensive method used in the conventional oxidation reaction is used. Since a platinum-based catalyst is not required, there is no poisoning and consumption of the catalyst due to carbon monoxide, and not only can the catalyst cost and catalyst maintenance cost be reduced, but also there is no hydrogen consumption due to the addition of excess oxygen, and Carbon oxides can be effectively removed.
- the product produced by the low-temperature plasma is almost limited to formaldehyde generated by the primary reaction, and does not generate various types of hydrocarbons, oils and fats generated by the secondary and subsequent reactions. Therefore, not only operation and maintenance are easy, but also there is no possibility that carbon monoxide is generated again by re-reaction of these various substances.
- the aqueous solution of formaldehyde is a commonly used disinfectant, formalin, so there is no risk of environmental pollution and it can be used as a basic chemical.
- the present invention relates to a purification method for selectively removing and purifying carbon monoxide from a fuel gas obtained by hydrogenating hydrocarbon such as methanol or methane gas through a reformer or the like. It can be suitably used for fuel cells and phosphoric acid type fuel cells.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Hydrogen, Water And Hydrids (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU10546/01A AU1054601A (en) | 1999-11-05 | 2000-11-02 | Method for purifying fuel for fuel cell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35218999 | 1999-11-05 | ||
JP11/352189 | 1999-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001035479A1 true WO2001035479A1 (fr) | 2001-05-17 |
Family
ID=18422400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/007727 WO2001035479A1 (fr) | 1999-11-05 | 2000-11-02 | Procede de purification du combustible d'une cellule a combustible |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU1054601A (ja) |
WO (1) | WO2001035479A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107915206A (zh) * | 2017-11-20 | 2018-04-17 | 宁波申江科技股份有限公司 | 应用于甲醇重组燃料电池的氢气纯化装置 |
CN108472585A (zh) * | 2015-11-05 | 2018-08-31 | 韩国机械研究院 | 具有污染氧化催化剂的再生装置的工艺排气污染材料去除设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH026504A (ja) * | 1988-06-24 | 1990-01-10 | Hitachi Koki Co Ltd | 低温プラズマ装置 |
US5122245A (en) * | 1989-05-24 | 1992-06-16 | Electricite De France | Process for the synthesis of "oxo" products by the plasma route and installation comprising a plasma reactor usable in the process |
JPH05258764A (ja) * | 1992-03-12 | 1993-10-08 | Hitachi Ltd | 燃料電池発電装置 |
-
2000
- 2000-11-02 WO PCT/JP2000/007727 patent/WO2001035479A1/ja active Search and Examination
- 2000-11-02 AU AU10546/01A patent/AU1054601A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH026504A (ja) * | 1988-06-24 | 1990-01-10 | Hitachi Koki Co Ltd | 低温プラズマ装置 |
US5122245A (en) * | 1989-05-24 | 1992-06-16 | Electricite De France | Process for the synthesis of "oxo" products by the plasma route and installation comprising a plasma reactor usable in the process |
JPH05258764A (ja) * | 1992-03-12 | 1993-10-08 | Hitachi Ltd | 燃料電池発電装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108472585A (zh) * | 2015-11-05 | 2018-08-31 | 韩国机械研究院 | 具有污染氧化催化剂的再生装置的工艺排气污染材料去除设备 |
CN107915206A (zh) * | 2017-11-20 | 2018-04-17 | 宁波申江科技股份有限公司 | 应用于甲醇重组燃料电池的氢气纯化装置 |
Also Published As
Publication number | Publication date |
---|---|
AU1054601A (en) | 2001-06-06 |
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