Solar energy storage power generation system based on oxidation-reduction reaction and method

Abstract

The invention belongs to the technical field of solar high-temperature heat storage power generation and discloses a solar energy storage power generation system based on an oxidation-reduction reaction and a method. The system comprises a high-temperature solar reaction subsystem, a circulation power generation subsystem arranged at one side of the high-temperature solar reaction subsystem and aspotlight solar subsystem arranged above the high-temperature solar reaction subsystem. An MnO / Mn2O3 oxidation-reduction circulation reaction is combined with high heat generated by spotlight solar energy, and the solar energy is stored as chemical energy for all-day continuous power generation. The invention further discloses the method of the system. By means of the system, on the basis that fossil energy such as other natural gas is not consumed, the solar energy collected in daylight is stored as chemical energy, through two different path modes, high heat released by the chemical energy is used for all-day continuous power generation, efficient conversion and storage for the solar energy can be achieved, and the system has the advantages of being compact in structure, simple in operation technology, high in solar energy utilization rate, low in initial input cost, environmentally friendly and the like.

Description

technical field [0001] The invention belongs to the technical field of solar high-temperature heat storage and power generation, and more specifically relates to a solar energy storage and power generation system and method based on oxidation-reduction reactions. Background technique [0002] Energy plays a vital role in the development of human society. At present, the global primary energy composition is mainly composed of fossil fuels. However, fossil fuels are not renewable and are accompanied by problems such as environmental pollution. In order to meet the needs of future development, it is necessary to vigorously develop and utilize clean and renewable energy sources such as solar energy, wind energy and biomass. Among the many renewable energy sources, solar energy is widely distributed and inexhaustible. The total amount of solar energy received by the earth every year reaches 1×10 18 kWh, equivalent to 1.3×10 14 ton of standard coal, solar energy resources are...

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Problems solved by technology

[0004] However, further studies have shown that for the complementary form of using high-temperature solar energy and Brayton top cycle to heat compressed air, not only still need to consume a large amount of fossil energy such as natural gas, but also because the heat collection temperature is too high, it is difficult to pass through the heat storage. The method realizes the complementary operation of the power generation system at night; secondly, for the conversion of solid hydrocarbon fuels such as biomass into fuels that can be used by the gas-steam combined cycle system to realize power generation and energy storage, although the regeneration of clean energy can be achieved, however, This system still cannot overcome the problem of high-temperature energy storage. At the same time, the system is huge and difficult to operate. The resulting syngas also produces a large amount of CO and CO during the combustion process. 2 , air pollution

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