Nuclear energy and tower solar energy light-thermal combined power generation system and method

Abstract

Provided are a nuclear energy and tower solar energy light-thermal combined power generation system and method. The system comprises a nuclear energy heating loop, a solar energy heating loop and a power generation loop. The power generation loop comprises a steam turbine connected with a power generator. A steam inlet of the steam turbine is connected with a steam generator through an overheater.A steam outlet of the steam turbine leads to the steam generator through a condenser and a water supply circulation pump. The nuclear energy heating loop is connected to the steam generator for heatexchange, and a main pump, a nuclear reactor and a voltage stabilizer are arranged in the nuclear energy heating loop. The solar energy heating loop is connected to the overheater for heat exchange, alow-temperature molten salt tank, a heat absorber and a high-temperature molten salt tank are arranged in the solar energy heating loop, and a heliostat field is matched with the heat absorber. Cooling water in the steam generator is heated into saturated steam by the nuclear energy heating loop to be fed into the overheater, and then the saturated steam in the overheater is heated into overheatsteam by the solar energy heating loop, so that the risk of solidification of molten salt is reduced, the factory power consumption is reduced, and the power generation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of power generation, and in particular relates to a combined nuclear energy and tower solar photothermal power generation system and a power generation method. Background technique [0002] Nuclear power plants are power plants that use the energy released by nuclear fission or nuclear fusion reactions to generate electricity, including nuclear islands that use nuclear fission to produce steam and conventional islands that use steam to generate electricity. At present, the nuclear islands of nuclear power plants are generally equipped with natural circulation steam generators, which can only generate saturated steam. In addition, for the sake of safe operation of the reactor, the coolant of the nuclear island is not allowed to boil (ie <320°C). Therefore, nuclear power plants are usually Pass the saturated steam of about 8Mpa (about 290°C) generated by the circuit into the steam turbine to do work. The low steam pa...

AI Technical Summary

Problems solved by technology

However, when the molten salt and water exchange heat, due to the low temperature of the feed water, in order to reduce the risk of solidification of the molten salt, it is necessary to configure sufficient electric heat tracing as an auxiliary, and it is often necessary to turn on the electric heat tracing to maintain the safety of the molten salt during low-load operation temperature, leading to serious anti-condensation power consumption, affecting the economics of solar thermal power plants

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