Combined power generation system based on waste incineration waste heat and optothermal and operation method thereof

Abstract

The invention provides a combined power generation system based on waste incineration waste heat and optothermal and an operation method thereof. According to the combined power generation system, flue gas high-temperature corrosion of a superheater of a waste heat boiler can be avoided, meanwhile, the application region of photo-thermal power generation is expanded, and the thermoelectricity conversion efficiency is improved. The combined power generation system is characterized in that a steam turbine generator set system involves a steam turbine high-pressure cylinder, a coupler, a steam turbine medium-low pressure cylinder, a low-pressure heater, a medium-pressure deaerator, a large-lift water feeding pump and a small-lift water feeding pump; a waste incineration waste heat boiler system involves a coal economizer, a steam pocket, a water cooling wall, an evaporator and the waste heat boiler superheater; valves are arranged at inlets and outlets of the large-lift water feeding pump and the small-lift water feeding pump; an inlet of a solar superheater is provided with a valve; an outlet of a solar reheater is provided with a valve; a valve is arranged on a medium-temperature medium-pressure steam bypass pipeline; the outlet of the solar reheater and the medium-temperature medium-pressure steam bypass pipeline are both connected with the steam turbine medium-low pressure cylinder; valves are arranged at an inlet and an outlet of a solar preheater; and a valve is arranged on a water bypass pipeline.

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.

Images