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Hydrogen production apparatus, method of operating hydrogen production apparatus, fuel cell system and method of operating fuel cell system

A generation device and generator technology, applied in the direction of fuel cells, fuel cell additives, chemical instruments and methods, etc., can solve problems that hinder the rise and stability of reaction temperature

Inactive Publication Date: 2009-08-05
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, it has been pointed out that when water vapor is excessively supplied to the hydrogen generator, the condensation phenomenon of water caused by the excess supply hinders the rise and stabilization of the reaction temperature.

Method used

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  • Hydrogen production apparatus, method of operating hydrogen production apparatus, fuel cell system and method of operating fuel cell system
  • Hydrogen production apparatus, method of operating hydrogen production apparatus, fuel cell system and method of operating fuel cell system
  • Hydrogen production apparatus, method of operating hydrogen production apparatus, fuel cell system and method of operating fuel cell system

Examples

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Embodiment approach 1

[0094] figure 1 It is a block diagram showing a configuration example of the fuel cell system according to Embodiment 1 of the present invention.

[0095] The hydrogen generating device 120 is mainly composed of a hydrogen generator 118 that supplies hydrogen-rich gas (hereinafter referred to as hydrogen-rich gas) to the combustion cell 203; controls the supply of hydrocarbon raw materials such as methane, butane, and natural gas, and simultaneously detects the hydrogen generator. The temperature of the reformer 103 and / or the selective oxidizer 105 of 118, the control device 205 that detects and determines whether there is abnormality in the amount of water or water vapor; the oxidant gas supply device 200 that supplies air as an oxidant to the fuel cell 203; The generator 118 is composed of a raw material supply device 107 for supplying raw materials; and first and second water supply devices 108 and 109 for supplying water to the hydrogen generator 118 .

[0096] Further, ...

Embodiment approach 2

[0143] image 3 It is a block diagram showing a configuration example of a fuel cell system according to Embodiment 2 of the present invention.

[0144] The structure of the fuel cell system 320 of the present embodiment is the same as that of the combustion cell system 320 of the first embodiment, except that the reforming heater 102 is provided with the combustion detector 207 for detecting the combustion state of the combustible gas by the reforming heater 102. The structure of the system 300 is the same.

[0145] Also, in Embodiment 1, an example was described in which it is determined whether the amount of water or water vapor inside the hydrogen generator 118 is excessive based on the detected temperatures detected by the reformer temperature detection unit 116 and the selective oxidizer temperature detection unit 17. In the embodiment of the invention, it is also possible to determine whether the amount of water or the amount of water vapor inside the hydrogen generato...

Embodiment approach 3

[0182] Figure 7 It is a block diagram showing a configuration example of a fuel cell system according to Embodiment 3 of the present invention. In this embodiment, a description will be given of a first modification aimed at removing excess water inside the reformer 103 or the selective oxidizer 105 .

[0183] The configuration and operation of the hydrogen generator 118, the oxidant gas supply device 200, the fuel cell 203, and the control device 205 are the same as those described in Embodiments 1 and 2, and thus the description thereof will be omitted.

[0184] The change in the structure of the fuel cell system 330 of the present embodiment is that a reformer discharge valve 400 for discharging excess condensed water stagnated inside the reformer 103 due to the influence of excess water vapor and the like is connected to the reformer 103, and the The selective oxidizer discharge valve 401 for discharging the excess condensed moisture stagnated in the selective oxidizer 1...

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Abstract

A hydrogen production apparatus capable of detecting hydrogen excess or steam excess in the interior of reforming unit or selective oxidation unit through simple means etc. There is provided hydrogen production apparatus (120) comprising hydrogen production unit (118) including reforming unit (100) for producing a reformed gas from a raw material and steam; transforming unit (103) for carrying out a shift reaction of the reformed gas fed from the reforming unit (100); and selective oxidation unit (105) for lowering to a given level or below the concentration of carbon monoxide gas contained in the reaction gas resulting from the shift reaction. The hydrogen production apparatus (120) further comprises control unit (205) and temperature detectors (116,117) for detecting the temperature of either the transforming unit (103) or the selective oxidation unit (105). The control unit (205) detects the amount of water or steam housed in the interior of the hydrogen production unit (118) as being in excess condition when the rate of rise of temperature detected by the temperature detectors (116,117) is less than a given threshold value.

Description

technical field [0001] The present invention relates to a hydrogen generator, a method for operating the hydrogen generator, a fuel cell system, and a method for operating the fuel cell system (hereinafter referred to as a hydrogen generator, etc.). In particular, it relates to a hydrogen generator capable of detecting excess water or steam in a reformer for reducing carbon monoxide gas in reformed gas and / or in a selective oxidizer. Background technique [0002] The fuel cell system generates electricity and heat by reacting hydrogen-rich reformed gas supplied to the fuel electrode of the fuel cell as fuel gas with air supplied to the air electrode of the fuel cell as oxidant gas to react inside the fuel cell. Steam reforming is one of the methods for generating hydrogen-rich reformed gas. This is a method of reacting gasoline raw materials such as natural gas, LPG and other hydrocarbon gases, alcohols such as methanol, and naphtha components with steam to produce hydrogen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/38H01M8/04H01M8/06H01M8/0612
CPCY02E60/50
Inventor 宫内伸二原田照丸鹈饲邦弘田口清藤原诚二上田哲也
Owner PANASONIC CORP
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