Seawater electrolysis hydrogen production system based on offshore wind power

Abstract

The invention relates to a seawater electrolysis hydrogen production system based on offshore wind power. The seawater electrolysis hydrogen production system comprises a seawater evaporation device,a solid oxide electrolytic cell stack and a first heat exchange device, and the first heat exchange device preheats water vapor by utilizing a gas at a mixed gas outlet of the solid oxide electrolyticcell stack; the seawater evaporation device utilizes tail gas waste heat of a solid oxide electrolytic tank to evaporate seawater into water vapor, the water vapor is subjected to heat exchange through the heat exchange device and then is introduced into the solid oxide electrolytic cell stack, and the solid oxide electrolytic cell stack utilizes offshore wind power to electrolyze the water vaporto generate hydrogen and oxygen. The generated hydrogen is introduced into a heat exchanger to preheat the water vapor to be introduced into the solid oxide electrolytic cell stack, and the hydrogensubjected to heat exchange is introduced into the seawater evaporation device to be used as a heat source for seawater evaporation, so that multistage utilization of the tail gas waste heat of the solid oxide electrolytic cell is realized.

Description

Technical field [0001] The invention relates to the field of water electrolysis and hydrogen production, and in particular to a seawater electrolysis hydrogen production system based on offshore wind power. Background technique [0002] Using renewable energy to electrolyze water to produce hydrogen is a clean solution for future hydrogen energy supply. Using offshore wind and solar power to generate electricity at sea for direct electrolysis of seawater is a very attractive solution. [0003] However, it is difficult for existing alkaline electrolysis and proton exchange membrane electrolysis technologies to directly use seawater as the electrolysis water source. The difficulty lies in the chlorine evolution at the anode, cathode scaling, seawater corrosion and other factors during the electrolysis of seawater, which will cause reduced electrode activity and pipeline corrosion. . At the same time, the comprehensive utilization rate of tail gas waste heat recovery and seawa...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a seawater electrolysis hydrogen production system based on offshore wind power, aiming to solve the problem of low waste heat recovery utilization rate in the existing seawater electrolysis hydrogen production hydrogen production

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