Nippon Oil Corporation

Nippon Oil Company

Nippon Mitsubishi Oil Corporation

Petroleum Energy Center Foundation

Jx Nippon Oil Energy Corporation

Iwao Anzai

Michiro Matsubara

Kenichirou Saitou

Osamu Sadakane

Takaya Matsumoto

Takashi Ino

Shigeki Matsuoka

Jun Uehara

Yuzo Fujino

An SOFC system is started-up efficiently in a short time while letting a hydrogen concentration in a reformed gas high. A method for starting-up an SOFC system including a reformer having a reforming catalyst, and an SOFC which uses the reformed gas as a fuel, in which, catalyst A having POX function and catalyst B having SR function are used as the reforming catalyst, the method including the steps of: increasing the temperature of catalyst A, by combustion heat or electricity, to a temperature at which POX reaction can proceed; increasing the temperature of catalyst B by POX reaction heat, increasing the temperature of SOFC by feeding the reformed gas to an anode and heating catalyst B by combustion heat generated from combustion of a reformed gas discharged from the anode, or increasing the temperature of catalyst B by POX reaction heat, increasing the temperature of SOFC by feeding a combustion gas produced from combustion of the reformed gas to a cathode and heating catalyst B by this combustion gas; and reducing the proportion of POX reaction or stopping POX reaction and perform SR, after catalyst B is heated to a temperature at which SR reaction can proceed.

Method for starting-up solid oxide fuel cell system

A process for producing a fuel gas for a fuel cell is provided. The process includes a step of converting hydrocarbons and/or oxygen-containing hydrocarbons to a reformed gas which is composed principally of hydrogen by an autothermal reforming reaction using an autothermal reforming catalyst. The catalyst includes rhodium supported on a support containing 5 to 40 percent by mass of a cerium oxide or rare earth element oxide which is composed principally of a cerium oxide, 60 to 95 percent by mass of an aluminum oxide, and 0 to 10 percent by mass in terms of metal of one or more elements selected from the group consisting of an alkaline metal and an alkaline earth metal, the atomic ratio of cerium and rhodium (Ce/Rh) being 1 to 250.

Process of producing fuel gas for fuel cell

A process for producing a fuel gas for a fuel cell is provided. The process includes a step of converting hydrocarbons and/or oxygen-containing hydrocarbons to a reformed gas which is composed principally of hydrogen by an autothermal reforming reaction using an autothermal reforming catalyst. The catalyst includes ruthenium supported on a support containing 5 to 40 percent by mass of a cerium oxide or rare earth element oxide which is composed principally of a cerium oxide, 60 to 95 percent by mass of an aluminum oxide, and 0 to 10 percent by mass in terms of metal of one or more elements selected from the group consisting of an alkaline metal and an alkaline earth metal, the atomic ratio of cerium and rhodium (Ce/Rh) being 1 to 250.

A fuel for a fuel cell system, which comprises at least 5 vol. % of hydrocarbons based on the whole fuel and 0.5 to 20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein the total content of hydrocarbon compounds which have carbon numbers of 7 and 8 is 20 vol. % or more based on the whole hydrocarbons and the total content of hydrocarbon compounds which have carbon numbers of 10 or more is 20 vol. % or less based on the whole hydrocarbons, and a fuel for a fuel cell system, which comprises at least 5 vol. % of hydrocarbons based on the whole fuel and 0.5 to 20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein the fuel has distillation properties; the initial boiling point in distillation of over 40&#xb0; C. and 100&#xb0; C. or lower, the 10 vol. % distillation temperature of over 50&#xb0; C. and 120&#xb0; C. or lower, the 90 vol. % distillation temperature of 110&#xb0; C. or higher and 180&#xb0; C. or lower, and the final boiling point in distillation of 130&#xb0; C. or higher and 210&#xb0; C. or lower. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per COemission, a low fuel consumption, a small quantity of evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, a water gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in view of storage stability and inflammability, and a low preheating energy.

Fuel for fuel cell system

A fuel for a fuel cell system comprising hydrocarbon compounds, which fuel has distillation properties of the initial boiling point (initial boiling point 0) in distillation of over 40&#xb0; C. and 100&#xb0; C. or lower, the 10 vol. % distillation temperature (T) of over 50&#xb0; C. and 120&#xb0; C. or lower, the 90 vol. % distillation temperature (T) of 110&#xb0; C. or higher and 180&#xb0; C. or lower, and the final boiling point in distillation of 130&#xb0; C. or higher and 210&#xb0; C. or lower. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per COemission, a low fuel consumption, a small quantity of evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, a water gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in terms of storage stability and inflammability, and a low preheating energy.

Fuel for use in a fuel cell system

A fuel for a fuel cell system comprising hydrocarbon compounds, which fuel has distillation properties of the initial boiling point (initial boiling point 0) in distillation of 24&#xb0; C. or higher and 40&#xb0; C. or lower, the 10 vol. % distillation temperature (T) of 25&#xb0; C. or higher and 50&#xb0; C. or lower, the 90 vol. % distillation temperature (T) of 45&#xb0; C. or higher and 130&#xb0; C. or lower, and the final boiling point in distillation of 55&#xb0; C. or higher and 150&#xb0; C. or lower. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per COemission, a low fuel consumption, a small quantity of evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, a water gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in terms of storage stability and inflammability, and a low preheating energy.

A fuel for a fuel cell system comprises wherein said fuel has distillation properties, the initial boiling point (initial boiling point 0) in distillation of 24&#xb0; C. or higher and 50&#xb0; C. or lower, the 10 vol. % distillation temperature (T) of 35&#xb0; C. or higher and 70&#xb0; C. or lower, the 90 vol. % distillation temperature (T) of 100&#xb0; C. or higher and 180&#xb0; C. or lower, and the final boiling point in distillation of 130&#xb0; C. or higher and 210&#xb0; C. or lower. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per COemission, a low fuel consumption, a small evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, a water gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in view of storage stability and inflammability, and a low preheating heat quantity.

Fuel for use in fuel cell system

The present invention relates to a fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein the content of hydrocarbon compounds having a carbon number of 4 is 15 vol. % or less, the content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, the content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, the content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, and the content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less.

A fuel for a fuel cell system comprising hydrocarbon compounds, wherein a content of saturates is 30 vol. % or more, a content of olefins is 35 vol. % or less and a content of aromatics is 50 vol. % or less. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per COemission, a low fuel consumption, a small quantity of evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, a water gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in terms of storage stability and inflammability, and a low preheating energy.

A fuel for a fuel cell system comprising 0.5-40 mass % of oxygenates in terms of an oxygen content based on the whole fuel. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per CO emission, a low fuel consumption, a small evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, an aqueous gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in view of storage stability and inflammability and a low preheating heat quantity.

Fuel for use in fuel cell

A solid oxide fuel cell, which comprises an assembly of a plurality of unit cells each comprising a solid electrolyte, and a fuel electrode and an air electrode provided on both sides of the solid electrolyte, respectively, the fuel electrode being composed mainly of ruthenium, nickel and ceramics can perform power generation of high efficiency with hydrocarbon or hydrogen resulting from complete reforming of hydrocarbon, or a steam-reformed gas containing carbon monoxide as the main component as a fuel gas.

Solid oxide fuel cell

A catalyst for the steam reforming of hydrocarbons characterized in that 0.1-2 wt. % of ruthenium is carried on a carrier which comprises 5-40 wt. % of ceria or rare element oxides containing ceria as the main ingredient and 60-95 wt. % of alumina, and that an atomic ratio of cerium to ruthenium (Ce/Ru) in the catalyst is in the range of from more than 10 to 200.

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Kanagawa, Japan

Iwao Anzai