Solid oxide fuel cell high temperature gas heat exchanger

Abstract

The invention relates to the field of heat exchanger equipment, in particular to a solid oxide fuel cell high temperature gas heat exchanger. The solid oxide fuel cell high temperature gas heat exchanger comprises a fixing structure, a pipe connecting structure, a first flue gas heat exchange structure, a vacuum chamber, a second flue gas heat exchange structure, a fuel gas preheating channel, anair preheating channel and a sealing structure; the first flue gas heat exchange structure and the second flue gas heat exchange structure which are used for heat exchange are arranged in the fixing structure, the fuel gas preheating channel used for preheating the fuel gas is arranged between the first heat exchange structure and the second flue gas heat exchange structure, and the air preheatingchannel for preheating the air is arranged in the second flue gas heat exchange structure; and the vacuum chamber and the sealing structure which are used for heat insulation and isolation are arranged between the first flue gas heat exchange structure and the flue gas heat exchange structure. According to the solid oxide fuel cell high temperature gas heat exchanger, the heat exchange efficiencyof the fuel gas preheating channel and the air in the air preheating channel are improved by using the first flue gas heat exchange structure and the second flue gas heat exchange structure, the efficiency of the flue gas heat exchange is greatly improved, and the heat energy utilization efficiency of the flue gas is improved.

Description

technical field [0001] The invention relates to the field of heat exchanger equipment, in particular to a high-temperature gas heat exchanger for a solid oxide fuel cell. Background technique [0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, referred to as SOFC) belongs to the third-generation fuel cell, which is an all-solid-state chemical power generation device that directly converts the chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner at medium and high temperatures. , is generally considered to be a fuel cell that will be widely used in the future like the proton exchange membrane fuel cell (PEMFC). [0003] However, the traditional solid oxide fuel cell high-temperature gas heat exchanger has low heat exchange efficiency during the heat exchange process, and there are still deficiencies in the thermal insulation of flue gas utilization, and it is inconvenient to weld with the pipe connection. In...

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Problems solved by technology

[0003] However, the traditional solid oxide fuel cell high-temperature gas heat exchanger has low heat exchange efficiency during the heat exchange process, and there are still deficiencies in the use of flue gas heat preservation and heat insulation, and it is inconvenient to weld with the pipe connection

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