Fuel cell system and method for starting the fuel cell system

A technology of a fuel cell system and a starting method, which is applied to fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve the problems of necessary heat source and high reaction temperature, and achieve the effect of preventing oxidative deterioration.

Inactive Publication Date: 2010-08-18
NIPPON OIL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the reaction temperature is relatively high, reaching 550-750°C, and a high-temperature heat source is necessary

Method used

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  • Fuel cell system and method for starting the fuel cell system
  • Fuel cell system and method for starting the fuel cell system
  • Fuel cell system and method for starting the fuel cell system

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Embodiment Construction

[0048] The fuel cell system used in the present invention has a reformer for reforming hydrocarbon-based fuel to produce hydrogen-containing gas and a high-temperature fuel cell. The reformer has a reforming catalyst layer. High-temperature fuel cells use the hydrogen-containing gas obtained from the reformer to generate electricity. The reforming catalyst layer is composed of a reforming catalyst that promotes a reforming reaction. The hydrogen-containing gas obtained from the reformer is called reformed gas.

[0049] (Process a)

[0050] When the fuel cell system is actually started, step a is performed. That is, the temperature of the reforming catalyst layer is raised while measuring the temperature of the reforming catalyst layer. The temperature measurement and temperature rise in step a are continued until the start-up is completed.

[0051] As a heat source for this temperature increase, for example, an electric heater provided in a reformer can be used.

[0052]...

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Abstract

This invention provides a method for starting a fuel cell system which can reliably conduct reforming from an early stage and can more reliably prevent an oxidative deterioration in anode, and a fuel cell system suitable for the method. The method is a method for starting a fuel cell system comprising a reformer comprising a reforming catalyst layer for reforming a hydrocarbon fuel to produce a hydrogen-containing gas, and a high temperature-type fuel cell for generating electric power using a hydrogen-containing gas. The method comprises a) the step of raising the temperature of the reforming catalyst layer while measuring the temperature of the reforming catalyst layer, b) the step of calculating the flow rate of a hydrocarbon fuel which can be reformed in the reforming catalyst layer based on the measured temperature of the reforming catalyst layer, and c) the step of supplying the hydrocarbon fuel at the calculated flow rate into the reforming catalyst layer to reform the fuel, and supplying the resultant reformed gas into an anode of a high temperature-type fuel cell. The amount of the hydrocarbon fuel supplied into the reforming catalyst layer is increased while repeating step b) and step c) until the amount of the hydrocarbon fuel supplied into the reforming catalyst layer reaches the flow rate at the time of the completion of the start.

Description

technical field [0001] The present invention relates to a fuel cell system for generating electricity using reformed gas obtained by reforming hydrocarbon fuels such as kerosene and its starting method. Background technique [0002] In a solid oxide electrolyte fuel cell (Solid Oxide Fuel Cell. Hereinafter sometimes referred to as SOFC depending on the situation.) system, it usually contains hydrogen-containing gas (reformed gas) for reforming hydrocarbon-based fuels such as kerosene or municipal gas. reformer and SOFC for electrochemically generating electricity from reformed gas and air. [0003] SOFC is usually operated at a high temperature of 550-1000°C. [0004] Reforming utilizes various reactions such as steam reforming (SR), partial oxidation reforming (POX), and autothermal reforming (ATR). However, in order to use a reforming catalyst, it may be necessary to heat to a temperature at which catalyst activity develops. [0005] Thus, sometimes both the reformer and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/38H01M8/04H01M8/06H01M8/12
CPCH01M8/0618H01M8/04373C01B2203/1604C01B2203/169Y02E60/50C01B3/382C01B2203/085C01B3/38C01B2203/066C01B2203/1288C01B3/386H01M8/04223C01B2203/1619C01B2203/0244H01M8/04753Y02E60/525C01B2203/0261C01B2203/0227H01M2008/1293C01B2203/0233H01M8/2425H01M8/04225H01M8/04302H01M8/2457H01M8/04268
Inventor 旗田进
Owner NIPPON OIL CO LTD
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