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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 fuel cells, chemical instruments and methods, hydrogen, etc., can solve problems that hinder the rise and stability of reaction temperature

Inactive Publication Date: 2006-11-08
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 generator 120 is mainly composed of a hydrogen generator 118 that supplies a hydrogen-rich gas (hereinafter referred to as hydrogen-rich gas) to the combustion cell 203; the hydrogen generator 118 controls the supply amount of hydrocarbon raw materials such as methane, butane, and natural gas, and detects the hydrogen generator at the same time. 118, the temperature of the reformer 103 and / or the oxidizer 105 is selected, and the control device 205 for detecting and determining whether there is an abnormality in the amount of water or water vapor; the oxidant gas supply device 200 for supplying 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 hydro...

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 configuration of the fuel cell system 320 of the present embodiment is different from that of the combustion cell of the first embodiment, except that the reformer heater 102 is provided with the combustion detector 207 for detecting the combustion state of the combustible gas by the reformer heater 102 . The structure of the system 300 is the same.

[0145] Also, in Embodiment 1, an example in which it is determined whether the amount of water or the amount of 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 is described. In the embodiment of the invention, it is possible to determine whether or not the amount of water or the amount of water vapor inside the hydroge...

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 the present embodiment, a first modification for the purpose of removing excess water in the reformer 103 or the selective oxidizer 105 will be described.

[0183] The configurations and operations of the hydrogen generator 118 , the oxidant gas supply device 200 , the fuel cell 203 , the control device 205 , and the like are the same as those described in Embodiments 1 and 2, so the description is omitted.

[0184] The configuration change of the fuel cell system 330 according to the present embodiment is that the reformer drain valve 400 for discharging the excess condensed water accumulated in the reformer 103 due to the influence of excess water vapor or the like is connected to the reformer 103, The selective oxidizer bleed valve 401 for discharging excess condensed water accumulated in the selective oxidizer 105 due to the i...

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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 or the like which can detect the excess state of the amount of water or the amount of water vapor in the reformer and / or the selective oxidizer for reducing carbon monoxide gas in the reformed gas. Background technique [0002] The fuel cell system generates electricity and heat by reacting hydrogen-rich reformed gas supplied as fuel gas to the fuel electrode of the fuel cell and air supplied as oxidant gas to the air electrode of the fuel cell, etc. inside the fuel cell. Steam reforming is one of the methods for generating hydrogen-rich reformed gas. This is a method in which a hydrogen-rich reformed gas is produced by reacting a raw material using natural gas, a hydrocarbon gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/38H01M8/0612
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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