Waste incineration power plant with improved main steam parameters

Abstract

The invention provides a waste incineration power generation device for improving the main steam parameters, which includes: a waste heat boiler, which is provided with a low-temperature heating surface to heat feed water; a steam drum, through which the feed water is separated into saturated water and saturated steam, and the saturated water is returned to the waste heat boiler The low-temperature heating surface of the coal-fired boiler is equipped with a high-temperature heating surface, and the saturated water vapor separated from the steam drum is superheated on the high-temperature heating surface; for the steam turbine, the superheated main steam enters the high-pressure cylinder to do work and drives the generator to generate electricity, and the steam discharged from the high-pressure cylinder The exhaust steam returns to the high-temperature heating surface of the coal-fired boiler for reheating. The reheated steam enters the low-pressure cylinder to do work and drives the generator to generate electricity. The exhaust steam discharged from the low-pressure cylinder enters the feed water circulation unit to be converted into feed water again. According to the waste incineration power generation device for increasing the main steam parameters of the present invention, the main steam parameters of the waste incineration power generation can be improved, and the intermediate reheating technology is used, thereby increasing the power generation of the steam turbine and the economic benefits of the incineration power plant.

Description

technical field [0001] The invention relates to waste incineration power generation technology, in particular to a waste incineration power generation device for improving main steam parameters. Background technique [0002] The higher the main steam parameter is, the more the power generation capacity of the waste incineration power plant will be, and the better the economic benefits will be. There have been dozens of pipe explosion accidents, which have caused irreparable losses to the property and personal safety of enterprises. One of the current methods is to use the process of coupling the thermal power unit and the working fluid of the waste incinerator to generate electricity. This process uses the superheated working medium of the waste incinerator as the low-pressure cylinder of the turbine to provide high-temperature steam. Although the main steam parameters can be improved, due to waste incineration The superheater in the furnace may superheat the steam to a hig...

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Problems solved by technology

[0002] The higher the main steam parameter is, the more the power generation capacity of the waste incineration power plant will be, and the better the economic benefits will be. There have been dozens of pipe explosion accidents, causing irreparable losses to the property and personal safety of enterprises

One of the current methods is to use the process of coupling the thermal power unit and the working fluid of the waste incinerator to generate electricity. This process uses the superheated working medium of the waste incinerator as the low-pressure cylinder of the turbine to provide high-temperature steam. Although the main steam parameters can be improved, due to waste incineration The superheater in the furnace may have to superheat the steam to a higher temperature, so this method worsens the high temperature corrosion problem to a certain extent, and makes the whole system suffer from higher safety hazards

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