Fuel cell system provided with electrodeionization device

A fuel cell system, electrodeionization technology, applied in the direction of fuel cells, fuel cell additives, electrolyte treatment of solid electrolyte batteries, etc., can solve the problems of reduced cycle life, not constant, and filter replacement cycle is different in each region, etc. , to achieve the effect of preventing performance deterioration and reducing cycle life

Active Publication Date: 2020-09-11
DOOSAN CORP
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Problems solved by technology

[0004] However, since the composition of supplied water (the kind and content of impurities) is not constant in each area, the replacement cycle of the filter may be different for each area
Therefore, in the filter type water treatment method, it is difficult to uniformly maintain the fuel cell system
In addition, when raw water is supplied to the reformer, since scale of impurities is generated inside the reformer, the performance of the fuel cell system deteriorates and the cycle life decreases

Method used

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  • Fuel cell system provided with electrodeionization device
  • Fuel cell system provided with electrodeionization device
  • Fuel cell system provided with electrodeionization device

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Embodiment Construction

[0021] The invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the scope of the present invention.

[0022] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Also, in the specification, the word “on” means positioned above or below the object portion, and does not essentially mean positioned on the upper side of the object portion based on the direction of gravity.

[0023] Throughout the specification, the word "comprises" and variations such as "c...

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Abstract

The fuel cell system includes: a reformer for converting fuel gas into hydrogen-rich reformed gas; a fuel cell stack for generating electricity by using the reformed gas; and an electrodeionization device for discharging pure water, wherein, Removal of impurity ions from the supplied water; a sensing unit for measuring the conductivity of pure water; a water supply unit for supplying pure water to the reformer and the fuel cell stack; and a control unit for The measurement signal is used to control the operation of the fuel cell stack.

Description

technical field [0001] The present invention relates to fuel cell systems. More specifically, the present invention relates to a fuel cell system having an electrodeionization device for purifying water supplied to a reformer and a fuel cell stack. Background technique [0002] Fuel cell systems using biogas and hydrocarbon fuels have recently attracted attention as distributed power sources. Furthermore, since the fuel cell system has a power generation rate of 35% or more, a thermal efficiency of 50% or more, and an overall efficiency of 85% or more, it is attracting attention as a high-efficiency energy production device. [0003] A fuel cell system includes a reformer that produces hydrogen from a hydrocarbon fuel. As a steam reforming reactor, the reformer reacts methane in fuel gas with oxygen in a high-temperature atmosphere to produce hydrogen. The amount of pure water required for the steam water reforming reaction is supplied to the reformer, and generally a fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04119H01M8/04291H01M8/04955H01M8/0612H01M8/0662
CPCH01M8/04H01M8/04126H01M8/04291H01M8/04955H01M8/06H01M8/0618H01M8/0681Y02E60/50
Inventor 金淏硕刘渡焕洪炳善辛美男
Owner DOOSAN CORP
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