A high temperature fuel cell system

Abstract

A high-temperature fuel cell system, including a fuel supply unit, a primary processing unit, a secondary processing unit, and an air supply unit; the fuel supply unit includes a fuel storage device and a fuel pipeline; the fuel primary processing unit has a high-voltage electrode and Plasma reactor with ground electrode, with fuel, air, water mixture inlet and primary product outlet, used to convert fuel into a mixture of hydrogen, carbon monoxide and low-carbon hydrocarbons, etc.; process the product in the fuel primary treatment unit Further processing to increase the concentration of hydrogen in the product and reduce the concentration of carbon monoxide in the product; the fuel cell reaction unit has an anode fuel inlet and an anode tail gas outlet, and a high-temperature fuel cell stack of cathode air inlet and outlet; the air supply unit is connected with the The cathode inlet of the fuel cell reaction unit communicates with the fuel primary processing unit to provide air for the fuel cell reaction unit and the fuel processing unit.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a fuel cell system which reduces the concentration of low-carbon hydrocarbons (C1-C2) and carbon monoxide in the reaction gas while increasing the concentration of hydrogen, and also relates to the connection between each unit in the fuel cell system thermal coupling. Background technique [0002] Due to its high energy conversion efficiency and environmental friendliness, fuel cells are recognized as the clean energy conversion technology with the most development potential in the 21st century, and are also regarded as one of the best options to replace traditional internal combustion engines. And portable power supply and other fields have broad application prospects. The hydrogen source problem restricts the wide application of fuel cells. The means to solve the hydrogen source problem include reforming hydrogen production and hydrogen storage. Reforming hydrog...

AI Technical Summary

Problems solved by technology

However, the selectivity of the plasma reforming product is poor, that is, the product contains a large amount of alkanes and carbon monoxide, etc., and the composition of the reaction gas is not suitable for fuel cells. The synthesis gas generated after plasma reforming can pass through the steam reforming catalyst, and the alkanes undergo steam reforming reaction. , increase the hydrogen composition, the generated reaction gas further enters the water vapor shift reactor, carbon monoxide undergoes a water gas shift reaction, the concentration of carbon monoxide decreases, and the concentration of hydrogen further increases

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