An indirect internal reforming solid oxide fuel cell stack
A technology of fuel cell stacks and solid oxides, which is applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of increasing system complexity and poor fuel utilization, so as to simplify system design, improve fuel utilization, and avoid Effects of anode carbon deposition and sulfur poisoning
Inactive Publication Date: 2019-05-10
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
Due to the need to independently provide fuel gas to heat the reformer, the overall fuel utilization rate of external reforming is not as good as that of direct internal reforming, and the complexity of the system is increased
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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0031] An indirect internal reforming solid oxide fuel cell stack, including a rectangular parallelepiped stack core formed by alternately stacking solid oxide fuel cells and metal connectors, and three airflow buffer chambers located outside the stack core , the three airflow buffer chambers are oxidizing gas entering the buffer chamber, oxidizing gas exiting the buffer chamber and fuel gas exi...
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Abstract
The invention discloses an indirect internal reforming solid oxide fuel cell stack, comprising a solid oxide fuel battery and a stack core alternatively stacked by metal connectors, a regular air flow buffer cavity; the fuel cell stack further comprises an indirect internal reforming fuel gas inlet buffer cavity; the indirect internal reforming fuel gas inlet buffer cavity comprises an initial fuel gas inlet buffer cavity and a fuel gas reforming room; the an initial fuel gas inlet buffer cavity is used for buffering after the initial hydrocarbon fuel enters; the fuel gas reforming room is used for reforming the initial hydrocarbon fuel to carbon monoxide, hydrogen and carbon dioxide, and conveying to the fuel cell stack. The indirect internal reforming solid oxide fuel cell stack avoids the problems of anode carbon deposition, sulphur positioning and others caused by direct internal reforming while saves the heating and heat exchange system for the external reforming; besides, the fuel cell stack is discharged by an electrochemical reaction of an electric pile itself; when the system design is simplified, the fuel utilization rate of the solid oxide fuel battery is also improved.
Description
technical field [0001] The invention belongs to the field of clean and renewable energy, and more specifically relates to an indirect internal reforming solid oxide fuel cell stack. Background technique [0002] Solid oxide fuel cell (SOFC) has high power generation efficiency and low greenhouse gas emissions. With the rapid development of related theory and material research, it has gradually become an electrochemical power generation device that is about to be commercialized. Because it mainly works at a relatively high temperature (550-1000°C), SOFC has flexible fuel selectivity, except for traditional hydrogen (H 2 ), methane (CH 4 ), natural gas, biogas, methanol, ethanol and other hydrocarbon gases can be used as fuel for SOFC. Except H 2 , CO, and other hydrocarbon fuels must be catalytically reformed before being supplied, and converted into H 2 , CO as the main component of the gas can be used by SOFC. Taking economical and widely used natural gas as an example...
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IPC IPC(8): H01M8/0612
CPCH01M8/0618H01M8/0631Y02E60/50
Inventor 蒲健杨佳军李箭池波颜冬黄维
Owner HUAZHONG UNIV OF SCI & TECH