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A solid oxide fuel cell and internal combustion engine combined power system and its operating method

A solid oxide, fuel cell technology, used in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of poor start-stop, high output power, poor dynamic characteristics, etc. , the effect of low output power and low emission

Active Publication Date: 2021-05-28
XI AN JIAOTONG UNIV
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  • Description
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Problems solved by technology

In addition, the SOFC-gas turbine system reported in the past has large components, high output power, poor start-stop performance, and poor dynamic characteristics.

Method used

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  • A solid oxide fuel cell and internal combustion engine combined power system and its operating method

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Embodiment Construction

[0026]The present invention will be described in further detail below in conjunction with the accompanying drawings; the present invention discloses a solid oxide fuel cell and internal combustion engine combined power system and its operating method; the system mainly includes a natural gas source 1, a pre-reforming reactor 6, and an SOFC device 7 And hydrogen storage reactor 13; The system also includes water tank 2, water pump 3, first heat exchanger 4, gas mixer 5, compressor 8, HCCI internal combustion engine 9, tail gas collection device 10, DC / AC converter 11, with Electric equipment 12 , second heat exchanger 14 , third heat exchanger 15 , fourth heat exchanger 16 and mixing device 17 .

[0027] The first heat exchanger 4 is provided with two input ends and two output ends, and the two input ends are input end 1 and input end 2 respectively, and the two output ends are output end 1 and output end 2 respectively; The fourth heat exchanger 16 is connected, and the fourth...

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Abstract

The invention discloses a combined power system of a solid oxide fuel cell and an internal combustion engine and an operation method thereof. The system combines an SOFC device and an HCCI internal combustion engine to form a combined power system. The HCCI internal combustion engine can use the tail gas of the SOFC device to generate electricity, making full use of The energy in the fuel can reduce exhaust heat and waste heat emission, which is an ideal comprehensive utilization method of energy. The system combines a homogeneous compression ignition internal combustion engine (HCCI) with a solid oxide fuel cell (SOFC). Putting a pre-reforming reactor before the SOFC fuel cell device can make the gas undergo reforming reaction in advance, improve the utilization rate of the fuel, and make the electrochemical reaction inside the SOFC device more complete. The system makes comprehensive use of fuel and can meet the needs of various large-scale power equipment; compared with traditional energy supply equipment, it has higher efficiency, less emissions, and higher economic value.

Description

【Technical field】 [0001] The invention belongs to the technical field of energy system design optimization, and in particular relates to a combined power system of a solid oxide fuel cell and an internal combustion engine and an operation method thereof. 【Background technique】 [0002] As a kind of high-temperature fuel cell, solid oxide fuel cell (SOFC device), and the hybrid system composed of other systems are also constantly researched and developed. Most electricity today is provided by conventional power generation technologies that rely heavily on the burning of fossil fuels. However, this will make the already serious environmental problems such as global warming and air pollution worse. In order to improve this traditional power generation method, many scholars have proposed SOFC-GT (gas turbine), SOFC-internal combustion engine and other combined power generation methods. This SOFC cogeneration technology takes advantage of SOFC's high power generation efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/32B60K6/24H01M8/0612H01M8/04007
CPCB60K6/24B60K6/32H01M8/04067H01M8/0618Y02E60/50Y02T10/62Y02T90/40
Inventor 吴震朱鹏飞张早校尧兢
Owner XI AN JIAOTONG UNIV
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