Fuel gas production system for fuel cells

A fuel cells system, comprising:

• a fuel gas production system that produces a hydrogen-rich fuel gas from a raw material;
• and
• fuel cells that receive a supply of the fuel gas from said fuel gas production system to generate electric power,
• said fuel gas production system including:
• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a plurality of chemical processes;
• a hydrogen separation mechanism that separates hydrogen from the gaseous mixture in at least one place of said chemical reaction device;
• and
• a flow path that feeds both the hydrogen separated by said hydrogen separation mechanism and a residual gas after the separation of hydrogen from the gaseous mixture to said fuel cells, so as to ensure a supply of all hydrogen obtained in all the chemical processes in said chemical reaction device to said fuel cells.

A fuel gas production system that produces a hydrogen-rich fuel gas, which is to be supplied to fuel cells, from a raw material, said fuel gas production system comprising:

• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a noxious component reduction unit which reduces concentration of a noxious component, that is harmful to said fuel cells, in a residual gas after the separation of hydrogen from the gaseous mixture through said hydrogen separation membrane;
• and
• a purge gas supply unit that introduces the residual gas after the reduction process, as a purge gas for carrying the hydrogen, to the extraction face.

A fuel cells system, comprising:

• a fuel gas production system that produces a hydrogen-rich fuel gas from a raw material;
• and
• said fuel cells that receive a supply of the fuel gas from said fuel gas production system to generate electric power,
• said fuel gas production system comprising:
• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a noxious component reduction unit which reduces concentration of a noxious component, that is harmful to said fuel cells, in a residual gas after separation of hydrogen from the gaseous mixture through said hydrogen separation membrane;
• and
• a purge gas supply unit that introduces the residual gas after the reduction process, as a flow of a purge gas for carrying out the hydrogen, to the extraction face.

A fuel gas production system that produces a hydrogen-rich fuel gas, which is to be supplied to fuel cells, from a raw material, said fuel gas production system comprising:

• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• and
• a purge gas supply unit that introduces a cathode off gas discharged from cathodes of said fuel cells as a purge gas for carrying out the hydrogen to the extraction face.

A fuel cells system, comprising:

• a fuel gas production system that produces a hydrogen-rich fuel gas from a raw material;
• and
• said fuel cells that receive a supply of the fuel gas from said fuel gas production system to generate electric power,
• said fuel gas production system comprising:
• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a purge gas supply unit that introduces a cathode off gas, which is discharged from cathodes of said fuel cells, as a flow of a purge gas for carrying out the hydrogen, to the extraction face.

A fuel gas production system that produces a hydrogen-rich fuel gas, which is to be supplied to fuel cells, from a raw material, said fuel gas production system comprising:

• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a reduction unit where a reduction process proceeds to reduce concentration of at least one of hydrogen and a specific component, which has high reactivity to hydrogen, included in a gas prior to supply to said fuel cells;
• and
• a purge gas supply unit that introduces a processed gas after the reduction process, as a flow of a purge gas for carrying out the hydrogen, to the extraction face.

A fuel cells system, comprising:

• a fuel gas production system that produces a hydrogen-rich fuel gas from a raw material;
• and
• said fuel cells that receive a supply of the fuel gas from said fuel gas production system to generate electric power,
• said fuel gas production system comprising:
• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a reduction unit where a reduction process proceeds to reduce concentration of at least one of hydrogen and a specific component, which has high reactivity to hydrogen, included in a gas prior to supply to said fuel cells;
• and
• a purge gas supply unit that introduces a processed gas after the reduction process, as a flow of a purge gas for carrying out the hydrogen, to the extraction face.

A fuel gas production system that produces a hydrogen-rich fuel gas, which is to be supplied to fuel cells, from a raw material, said fuel gas production system comprising:

• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a purge gas supply unit that introduces an anode off gas, which is discharged from anodes of said fuel cells, as a flow of a purge gas for carrying out the hydrogen, to the extraction face;
• a memory configured to store a predetermined relationship between a load on said fuel cells and flow rate of the purge gas;
• a measuring unit that measures a load on said fuel cells;
• and
• a flow rate regulation unit that regulates a flow rate of the purge gas according to the observed a load on.

A fuel cells system, comprising:

• a fuel gas production system that produces a hydrogen-rich fuel gas from a raw material;
• and
• said fuel cells that receive a supply of the fuel gas from said fuel gas production system to generate electric power,
• said fuel gas production system comprising:
• a chemical reaction device that produces a gaseous mixture containing hydrogen from the raw material through a chemical process;
• a hydrogen separation membrane that has selective permeability to hydrogen and have a feeding face and an extraction face, the feeding face receiving a supply of the gaseous mixture, the extraction face extracting selectively permeating hydrogen from the gaseous mixture;
• a purge gas supply unit that introduces an anode off gas, which is discharged from anodes of said fuel cells, as a flow of a purge gas for carrying out the hydrogen, to the extraction face of said hydrogen separation membrane;
• a memory configured to store a predetermined relationship between a load on said fuel cells and flow rate of the purge gas;
• a measuring unit that measures a load on said fuel cells;
• and
• a flow rate regulation unit that regulates a flow rate of the purge gas according to the observed a load on said fuel cells.