Biogas-tower type photo-thermal complementary power generation system

Abstract

The invention provides a biogas-tower type photo-thermal complementary power generation system. The system comprises a tower type light gathering and heat absorbing system, a molten salt energy storage system, a molten salt steam generation system, a steam turbine unit power generation system, a biogas fermentation system, a biogas molten salt heating system, a biogas overheating system and a biogas fermentation temperature increasing system; the tower type light gathering and heat absorbing system is used for heating up low-temperature molten salt flowing therein to high-temperature molten salt; the molten salt energy storage system is used for providing the high-temperature molten salt and the low-temperature molten salt; the molten salt steam generation system uses the high-temperaturemolten salt to generate overheated steam; the overheated steam is condensed into liquid water after passing through the steam turbine unit power generation system; the biogas fermentation system is used for providing biogas; the biogas molten salt heating system is used for burning the biogas to heat the low-temperature molten salt; and the biogas overheating system is used for heating the biogasto heat the overheated steam. According to the biogas-tower type photo-thermal complementary power generation system, the problem that a tower-type photo-thermal power station cannot generate electricity under continuous rainy weather conditions as well as the problem of low biogas fermentation yield under the low-temperature condition can both be solved.

Description

technical field [0001] The invention relates to the technical field of solar power generation, in particular to a biogas-tower solar-thermal complementary power generation system. Background technique [0002] Tower-type photothermal power generation technology has been vigorously promoted due to its advantages of high concentration ratio, high operating parameters, high photoelectric efficiency, and easy energy storage. Tower-type photothermal power plants are mostly built in areas with better sunlight resources, such as parts of Qinghai, Gansu, and Xinjiang in China. In these areas, the aquaculture industry is more developed, and there are more agricultural and forestry wastes, so it is suitable to build a biogas fermentation system. [0003] The energy storage time of the tower solar thermal power station is generally 6 hours to 16 hours. In continuous rainy weather, it cannot provide a continuous and stable power supply for the power grid or the electricity owner, or th...

AI Technical Summary

Problems solved by technology

The invention solves the problem that tower-type photothermal power plants cannot generate electricity under continuous rainy weather conditions, and at the same time solves the problem of low biogas fermentation gas production rate under low temperature conditions

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