摘要:
A fuel cell power generation system comprises a reforming catalyst body configured to generate a reformed gas containing hydrogen from a feed gas and water, a fuel cell configured to generate an electric power by consuming the reformed gas, and a burner configured to combust an off gas containing hydrogen which is sent from the fuel cell as a fuel gas to generate a combustion gas used for heating the reforming catalyst body, wherein the off gas from which a steam has been separated is heated, and the heated off gas is fed to the burner as the fuel gas, the separated steam being condensed into water which is discharged to outside of the system.
摘要:
A hydrogen generator comprises a burner (3) for generating a combustion gas, a reformer provided around the burner to generate a reformed gas containing hydrogen by a steam reforming reaction (18) based on a feed material comprising a compound containing at least carbon and hydrogen and a steam, using heat transmission from a combustion gas generated by the burner, and an evaporator (32) having an inner tube provided around the burner, an outer tube provided around the inner tube, and a bottom plate that closes a lower portion of a tubular space formed between the inner tube and the outer tube, the evaporator being configured to evaporate water supplied to the tubular space to generate a steam to be supplied to the reformer, wherein a water absorbing member having a water absorbing capability is provided in the tubular space.
摘要:
The present invention provides a fuel cell power generation system and method, which can realize, at least at one of time periods before the start of and after the end of power generation, a purging of an atmosphere of a fuel gas flow channel without using nitrogen. Further, it provides a fuel cell power generation system and method, in which a highly dense carbon monoxide can be prevented from flowing into the fuel cell. The fuel cell power generation system is so structured to comprise: a fuel gas generating means for generating a hydrogen-rich fuel gas from a source material having, as a main ingredient, a compound containing carbon and hydrogen; a source material supply source for supplying a source material to the fuel gas generating means; a fuel gas supply means for supplying the fuel gas from the fuel gas generating means to a fuel gas flow channel of a fuel cell at which channel a fuel electrode is placed; and a bypass means for supplying the source material from the source material supply source to the fuel gas flow channel of the fuel cell, bypassing the fuel gas generating means, where in at least at one of time periods before the start of and after the end of power generation, the source material, as a displacement gas, is injected into the fuel gas flow channel of the fuel cell via the bypass means.
摘要:
A hydrogen generator comprises therein a reformer, a Shifter, a material flow passage with first evaporator through which a material is supplied to the reformer, a reformed gas flow passage for leading the reformed gas derived from the reformer to the Shifter, a shifted gas flow passage through which a shifted gas derived from the Shifter is taken out, and second steam flow passage formed adjacent to the reformed gas flow passage to be located at upstream side of the Shifter. The second evaporator is provided within the second steam flow passage. Apart of heat of the reformed gas is recovered as latent heat by the second evaporator. Thereby, temperature of the Shifter is controlled.
摘要:
A burner comprises a fuel distributor having a plurality of fuel injection holes through which a fuel gas is injected into a combustion space 3, an air injector 2 placed to surround the fuel distributor and having a plurality of air injection holes through which air is injected into the combustion space 3, a temperature detector placed such that a temperature detecting portion at a tip end thereof is located within the air injection hole, a body portion thereof is contained within the air injector, and an air layer is formed between the temperature detector and an inner wall of the air injector 9, and a flame detector connected to the temperature detector, for detecting a flame condition based on temperature information within the combustion space which is obtained from the temperature detector.
摘要:
A hydrogen generator comprises a burner for generating a combustion gas, a reformer provided around the burner to generate a reformed gas containing hydrogen by a steam reforming reaction based on a feed material comprising a compound containing at least carbon and hydrogen and a steam, using heat transmission from a combustion gas generated by the burner, and an evaporator having an inner tube provided around the burner, an outer tube provided around the inner tube, and a bottom plate that closes a lower portion of a tubular space formed between the inner tube and the outer tube, the evaporator being configured to evaporate water supplied to the tubular space to generate a steam to be supplied to the reformer, wherein a water absorbing member having a water absorbing capability is provided in the tubular space.
摘要:
A fuel cell power generation system has inert gas supply means of supplying a particular inert gas at least to the reformer (1); and alternative gas supply means (6) of supplying an alternative gas other than the particular inert gas at least to the reformer, wherein when the operation of the fuel cell is stopped, the alternative gas supply means is used to discharge hydrogen rich gas staying at least in the reformer if the stop of the operation of the fuel cell is an ordinary stop, and the inert gas supply means is used to perform the discharge if the stop of the operation of the fuel cell is an emergency stop.
摘要:
To provide a burner for a hydrogen generation system having an excellent combustion stability which can be achieved at low costs, and a hydrogen generation system having such a burner. A burner for hydrogen generation systems according to the present invention includes a combustion chamber that has a taper that enlarges in a flame radiation direction, and a distributor having an upper-stage gas injection ports for injecting utility gas and off-gas into the combustion chamber. Air injection ports are formed in the tapered side wall of the combustion chamber for injecting combustion air into the combustion chamber. The air injection ports are generally opposed to the upper-stage gas injection ports formed in the distributor.
摘要:
The present invention provides a fuel cell power generation system and method, which can realize, at least at one of time periods before the start of and after the end of power generation, a purging of an atmosphere of a fuel gas flow channel without using nitrogen. Further, it provides a fuel cell power generation system and method, in which a highly dense carbon monoxide can be prevented from flowing into the fuel cell. The fuel cell power generation system is so structured to comprise: a fuel gas generating means for generating a hydrogen-rich fuel gas from a source material having, as a main ingredient, a compound containing carbon and hydrogen; a source material supply source for supplying a source material to the fuel gas generating means; a fuel gas supply means for supplying the fuel gas from the fuel gas generating means to a fuel gas flow channel of a fuel cell at which channel a fuel electrode is placed; and a bypass means for supplying the source material from the source material supply source to the fuel gas flow channel of the fuel cell, bypassing the fuel gas generating means, where in at least at one of time periods before the start of and after the end of power generation, the source material, as a displacement gas, is injected into the fuel gas flow channel of the fuel cell via the bypass means.
摘要:
A fuel cell power generation system has inert gas supply means of supplying a particular inert gas at least to the reformer (1); and alternative gas supply means (6) of supplying an alternative gas other than the particular inert gas at least to the reformer, wherein when the operation of the fuel cell is stopped, the alternative gas supply means is used to discharge hydrogen rich gas staying at least in the reformer if the stop of the operation of the fuel cell is an ordinary stop, and the inert gas supply means is used to perform the discharge if the stop of the operation of the fuel cell is an emergency stop.