Hydrogen (H2) gas and crude carbon dioxide (CO2) gas are separated from a gaseous mixture thereof Combustible gas(es) in the crude CO2 gas are combusted to produce heat, at least a portion of which is recovered by indirect heat exchange with at least a portion of the separated H2 gas or a gas derived therefrom The invention may be integrated with coal-fired power stations to reduce or eliminate emission of harmful components into the atmosphere

A method of treating a gaseous mixture comprising hydrogen and carbon dioxide

A process for production of hydrogen through gasification of a combustible material which comprises a step (1) of gasifying a combustible material (a) and a gas treatment step of purifying a formed gas (b) to produce hydrogen, characterized in that the gas treatment step comprises a methanation step (5) of reacting carbon dioxide and carbon monoxide contained in the formed gas (b) obtained in the gasifying step (1) to convert them to methane and a hydrogen purification step (6) of separating methane and nitrogen contained in the gas after the methanation step to thereby produce a purified hydrogen gas, or in that the gas treatment step comprises a gas washing step of washing the formed gas (b) obtained in the gasifying step (1), a modification step of modifying a gas obtained by removing an acidic gas from the gas after the gas washing step through adsorption, a step of selectively oxidizing the resultant modified gas, and a step of absorbing carbon dioxide contained in the gas after the step of selective oxidation. The hydrogen produced by the above process can be suitably used for a fuel cell, in particular, a solid polymer type fuel cell.

Process and apparatus for production of hydrogen by gasification of combustible material and method for electric power generation using fuel cell and electric power generation system using fuel cell

The object of the invention is the coupling of a hydrogen fuel cell to an enzymatic process for the production of electricity and the transformation and sequestration of CO2. Gaseous CO2 emissions from processes such as hydrocarbon reforming are transformed into carbonate or bicarbonate ions and hydrogen ions by the enzymatic system in order to prevent their contribution to the greenhouse effect. The hydrogen ions resulting from the enzymatic process are recovered and combined in order to supply the hydrogen fuel cell. Finally, water, a by-product of the oxidizing reaction of the hydrogen fuel cell, is recovered and recycled back into the aqueous enzymatic system.

Process for generating electricity with a hydrogen fuel cell

A process for producing electrical power, chemicals, carbon dioxide, and hydrogen is provided. One or more feedstocks and one or more oxidants can be combined in a fluidized reaction zone heated to a temperature from about 1050° F. to about 1900° F. to provide a synthesis gas comprising carbon dioxide, carbon monoxide and hydrogen. In one or more embodiments, at least a portion of the synthesis gas can be used as a fuel source for one or more turbines to drive one or more electrical generators. In one or more embodiments, at least a portion of the synthesis gas can be introduced to one or more gas converters to provide methanol, alkyl formates, dimethyl ether, ammonia, Fischer-Tropsch products, derivatives thereof or combinations thereof.

Methods for producing synthesis gas

Disclosed is a composite particle-loaded article which contains composite particles composed of nickel in an oxidized state and a substance X (X represents at least one element selected from the group consisting of nickel, palladium, platinum, ruthenium, gold, silver and copper), and a carrier on which the composite particles are loaded. The composite particle-loaded article has a loaded layer in which the composite particles are localized.

Composite particle-loaded article, method for producing the composite particle-loaded article, and method for producing compound using the composite particle-loaded article as chemical synthesis catalyst

PROBLEM TO BE SOLVED: To miniaturize a system and to operate the system economically and stably over a long time by lowering the carbon monoxide concentration of reformed fuel gas supplied to a cell fuel electrode to a practical level. SOLUTION: This system comprises a fuel reforming system which reforms hydrogen carbide or alcohol fuel and a fuel cell main body 1 in which a platinum alloy is used as the electrode catalyst of a cell fuel electrode 2 into which fuel gas reformed by the fuel reforming system is introduced, platinum as the catalyst of a cell oxidizer electrode 3 into which an oxidizer is introduced, and a solid high polymer film as the electrolyte. In this case, the fuel reforming system is provided with a catalyst layer 11 for selectively oxidizing carbon monoxide.

Solid high polymer fuel cell system

PROBLEM TO BE SOLVED: To efficiently recover carbon dioxide, to produce hydrogen at high efficiency, to improve the energy efficiency of the whole system and to prolong the service of each catalyst in use. SOLUTION: A reformed gas consisting essentially of hydrogen is obtained in a stem reforming reactor 12 by mixing steam with a gas, from which sulfur portion contained in liquefied natural gas is removed in a desulfurization reactor 11, and using the heat source from a combustion burner. The carbon monoxide and moisture contained in the reformed gas are respectively removed in a carbon monoxide remover 13 and a cooling moisture separator 14 and hydrogen is selectively separated from the reformed gas in a gas separator 15. The remaining gas after the separation is supplied to a combustion burner, steam is removed from the off gas of the combustion burner in a gas-liquid separator 16 and carbon dioxide contained in the off-gas is heat exchanged with the liquefied natural gas as evaporation heat source. As a result, carbon dioxide is solidified and recovered in a recovering device 10.

Hydrogen producing device and method thereof

PROBLEM TO BE SOLVED: To provide a carbon monoxide reducing device of solid polymer fuel cell capable of reducing carbon monoxide in efficient, simple constitution, and provide its operating method. SOLUTION: In a device for oxidizing and reducing carbon monoxide in a reformed gas in a solid polymer fuel cell containing a fuel reforming system for reforming hydrocarbon or alcohol fuel with a catalyst, a means 38 for introducing oxygen or air into a region where the temperature of the reformed gas is 100-150 deg.C is arranged, and a carbon monoxide oxidizing catalyst layer 30 is arranged in the downstream position than the oxygen or air introducing portion.

Carbon monoxide reducing device for solid high polymer fuel cell and its operating method

PROBLEM TO BE SOLVED: To provide a fuel cell generation plant and its control device which can control the temperature variation of a desulfurizer caused by variation in the oxygen concentration contained in fuel gas even in such a case that gas containing a great deal at oxygen is supplied to the fuel cell power generation plant as the fuel gas. SOLUTION: Fuel gas containing a small quantity of oxygen is increased in its temperature to a desulfurizing operation temperature by a heat exchanger 14, a hydrogen sulfide is removed by a desulfurizer 15 which is filled with only a hydrogen sulfide absorbent. The fuel gas containing no hydrogen sulfide but containing hydrogen from a transformer 22 is supplied to a reformer 19, at which it is reformed into a hydrogen rich gas, while the hydrogen contained in the fuel gas is heated by reaction with the oxygen in the reformer 19. The fuel gas decreased in its temperature to a carbon monoxide denaturating reaction temperature by the heat exchanger 14 is than supplied to the transformer 22, at which it is reduced in its carbon and supplied to a fuel cell body 25.

Fuel cell power generation plant and its control device

PURPOSE:To obtain a catalyst used for reforming a fuel consisting mainly of aliphatic hydrocarbons into a fuel gas composed mainly of hydrogen, which is durable and manufactured at low cost, and to provide a reforming device which uses the reforming catalyst effectively. CONSTITUTION:This reforming catalyst is used for reforming a fuel consisting mainly of aliphatic hydrocarbons into a fuel gas composed mainly of hydrogen. Ru4 is mainly carried in catalytic particles 1, and Ni2 entirely covers each catalytic particle. In addition, the reforming device reforms the fuel consisting mainly of the aliphatic hydrocarbons into the fuel gas composed mainly of hydrogen. The reforming device is filled with the reforming catalyst from the inlet of a reforming pipe to a position where the internal temperature of the reforming pipe can somewhat hardly cause the poisoning of the catalyst.

Hizuka Junji

Papers

Solid high polymer fuel cell system

Hydrogen producing device and method thereof

Carbon monoxide reducing device for solid high polymer fuel cell and its operating method

Fuel cell power generation plant and its control device

Catalyst for reforming hydrocarbon fuel and reforming device