Solid oxide fuel cell composite system and method of use

Abstract

A solid oxide fuel cell composite system and method of use are provided, including a reformer, a battery stack, a carburetor and a combustor. The first input end of the reformer is communicated with afuel gas supply device, the second input end of the reformer is communicated with the carburetor, and the first output end of the reformer is communicated with the battery stack. A first input end ofthe burner is in communication with the fuel air supply device, and a second input end of the burner is in communication with air; a trap system inlet communicates with an anode outlet of the stack,and the trap system outlet is selected from at least one of communication with the burner, communication with the reformer, and direct discharge into the air. The invention separates the combustible components from the generated water in the anode tail gas of the battery stack, and realizes the recovery and utilization of the combustible components; Making full use of the high-grade thermal energyof fuel gas to drive the carbon dioxide capture system, the carbon dioxide recovery can be realized on the basis of low energy consumption or zero energy consumption, so that the system can generateelectricity efficiently while achieving near-zero carbon dioxide emissions.

Description

technical field [0001] The invention belongs to the technical field of fuel cell power generation systems, and in particular relates to a solid oxide fuel cell composite system and a use method. Background technique [0002] A solid oxide fuel cell (SOFC) power generation system is a power generation device that converts chemical energy in fuel into electrical energy. SOFC can choose a wide range of fuels. Industrial hydrogen, natural gas, city gas, methanol, alcohol, diesel and some biofuels can be used in SOFC power generation systems directly or after simple treatment. Therefore, SOFC is recognized as a lap joint A bridge to a hydrogen society. Another outstanding advantage of SOFC is its high efficiency. Its electrical efficiency can reach 55%. If cogeneration of heat and power is realized, its efficiency can reach more than 80%, which is higher than any traditional generator or other types of fuel cells. [0003] Whether SOFC can achieve high power generation efficien...

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Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a solid oxide fuel cell composite system and its use method, which are used to solve the problem of low fuel utilization rate of the system and difficulty in fully and effectively utilizing the energy in the anode tail gas in the prior art. And other issues

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