Nuclear energy and slot-type solar-thermal combined power generation system and power generation method

Abstract

The invention relates to a nuclear energy and slot-type solar-thermal combined power generation system and a power generation method. The nuclear energy and slot-type solar-thermal combined power generation system comprises a nuclear energy heating circuit, a solar heating circuit and a power generation circuit. The power generation circuit comprises a steam turbine connected with a generator, thesteam inlet of the steam turbine is connected with a steam generator through a superheater, and the steam outlet of the steam turbine is led into the steam generator through a condenser and a water supply circulating pump. The nuclear energy heating circuit is connected to the steam generator for heat exchange, and the nuclear energy heating circuit is provided with a main pump, a nuclear reactorand a voltage stabilizer. The solar heating circuit is connected to the superheater for heat exchange, and the solar heating circuit is provided with a low-temperature molten salt tank, a slot-type solar mirror field and a high-temperature molten salt tank. In the process of power generation, the nuclear energy heating circuit heats the cooling water in the steam generator into saturated steam, wherein the saturated steam is sent into the superheater; and the solar heating circuit heats the saturated steam in the superheater into superheated steam. According to the nuclear energy and slot-type solar-thermal combined power generation system and the power generation method, the risk of molten salt solidification can be reduced, the auxiliary power consumption can be reduced, and the power generation efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of power generation, and in particular relates to a combined nuclear energy and trough 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 p...

AI Technical Summary

Problems solved by technology

However, in the heat exchange between molten salt and water, since the temperature of the feed water is not high, 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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