Solar energy, wind energy and fuel gas complementation combined hydrogen production and methane production circulating thermal power generation device

Abstract

The invention discloses a solar energy, wind energy and fuel gas complementation combined hydrogen production and methane production circulating thermal power generation device. A groove type solar thermal power generation technology is organically grafted in a semi-closed supercritical carbon dioxide fuel gas Brayton thermal power generation system, and the congenital defect that solar thermal power generation is unstable and discontinuous is overcome through complementation heat storage circulating power generation; meanwhile, water generated by pure oxygen gas power generation is used for electrolytic hydrogen production and oxygen production, carbon dioxide obtained through steam-water separation serves as a power working medium, other parts are subjected to hydrogenation methanation preparation, and prepared methane gas is stored; oxygen obtained by hydrogen production through renewable energy electrolysis water is used for pure oxygen fuel gas Brayton efficient power generation of the system; and water generated by condensation of the system and water generated by hydrogenation methanation are directly supplied to a groove type solar thermal power generation system for recycling after being stored and serve as a water source for cleaning a solar mirror field. The invention belongs to the technical field of solar thermal power generation and high-temperature thermochemistry interdisciplinary.

Description

technical field [0001] The solar wind energy and gas complementary combined hydrogen and methane cycle thermal power generation device of the present invention organically grafts the trough solar thermal power generation technology into the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system, and generates electricity through complementary heat storage cycle to avoid solar thermal power generation. The congenital defect of unstable and discontinuous power generation; at the same time, the water generated by pure oxygen gas power generation is used for electrolysis to produce hydrogen and oxygen, and the carbon dioxide separated from soda water is used as a power working medium, and the rest is prepared by hydromethanation, and the prepared The methane gas is stored, and the oxygen obtained by using renewable energy to electrolyze water to produce hydrogen is used for the system's own pure oxygen gas Brayton high-efficiency power generation; the ...

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Problems solved by technology

[0003] Objectively speaking, my country’s thermal power generation industry has not really started research on zero-emission pure oxygen gas-fired power generation technology, and the scientific research project of combining this technology with carbon dioxide hydromethanation and realizing cycle thermal power generation has yet to be established, and this project is related to the country. energy transition

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