Combined power generation system based on waste incineration waste heat and solar heat and its operation method

Abstract

The invention provides a combined power generation system based on waste incineration waste heat and solar heat and its operation method, which can avoid high-temperature corrosion of flue gas in the superheater of the waste heat boiler, expand the application area of ​​solar thermal power generation, and improve the efficiency of thermoelectric conversion. The steam turbine generator system includes the high pressure cylinder of the steam turbine, the coupling, the medium and low pressure cylinder of the steam turbine, the low pressure heater, the medium pressure deaerator, the large head feed water pump and the small head feed water pump; the waste incineration waste heat boiler system includes the economizer, steam package, water wall, evaporator and waste heat boiler superheater; the inlet and outlet of the large-lift feed water pump and the small-lift feed water pump are provided with valves; the inlet of the solar superheater is provided with a valve; the outlet of the solar reheater is provided with a valve; Valves are installed on the medium-pressure steam bypass pipeline; the outlet of the solar reheater and the medium-temperature and medium-pressure steam bypass pipeline are connected to the medium and low-pressure cylinder of the steam turbine; the inlet and outlet of the solar preheater are equipped with valves; on the water bypass pipeline A valve is provided.

Description

technical field [0001] The invention relates to a combined power generation system based on waste incineration waste heat and light heat and an operation method thereof. Background technique [0002] With the continuous development of urban economic construction and the continuous improvement of people's living standards, the harmless disposal of domestic waste has become an urgent social problem. Waste incineration treatment technology has the advantages of good harmless effect, high degree of reduction, and recyclable energy for power generation. It has been more and more applied in recent years. With the settlement, completion and operation of waste incineration power plant projects in large and medium-sized cities in China, and the reduction of waste treatment subsidies year by year, the original purpose of waste incineration power plants for processing waste has been relatively weakened. The main steam parameters have become an inevitable choice. [0003] Solar therma...

AI Technical Summary

Problems solved by technology

However, solar thermal power generation has certain requirements on the total radiation intensity of solar energy. For areas with poor solar energy resources, it is not suitable to carry out solar thermal power generation. For areas where solar energy is available, solar thermal power generation is used alone, and the thermoelectric conversion efficiency is low.

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