Parallel operation waste incineration power generation thermodynamic system

Abstract

The invention provides a parallel operation waste incineration power generation thermodynamic system. The parallel operation waste incineration power generation thermodynamic system comprises a high-parameter waste heat boiler, a high-parameter steam turbine, a medium-low-parameter waste heat boiler and a medium-low-parameter steam turbine. An outlet of the high-parameter waste heat boiler communicates with a high-pressure steam inlet of the high-parameter steam turbine through a pipeline. An outlet of the medium-low-parameter waste heat boiler communicates with a medium-low-pressure steam inlet of the high-parameter steam turbine and a steam inlet of the medium-low-parameter steam turbine through pipelines correspondingly. The high-parameter steam turbine drives a first power generator to generate power through a gearbox. The medium-low-parameter steam turbine directly drives a second power generator to generate power. The medium-low-pressure steam inlet of the high-parameter steam turbine is used for absorbing steam added by the medium-low-parameter waste heat boiler. In the operation process of the system, the steam exhaust parameters of the two steam turbines are consistent, and the two steam turbines share a condensed water heat regeneration system and a deoxidizing system. According to the thermodynamic system, auxiliary equipment can be reduced, the investment and operation maintenance cost is reduced, the heat load of the medium-low-parameter waste heat boiler is fully utilized, and the power generation efficiency and economic benefits of a power plant are improved.

Description

technical field [0001] The invention belongs to the technical field of waste incineration power generation, and specifically relates to a waste heat power generation thermodynamic system that satisfies the parallel operation of two different parameters of a waste incineration power plant and can cope with the increase in boiler steam volume caused by the increase in the calorific value of waste. Background technique [0002] With the development of the country's economy and society, the amount of domestic waste to be treated in cities and towns is increasing, and the calorific value of waste is also increasing. Due to the harsh site selection conditions for waste incineration power plants, some waste incineration power plants need to be expanded to meet the growing demand. waste disposal needs. When considering the expansion of waste-to-energy power plants, in order to pursue higher power generation revenue, a thermal system with higher parameters is usually used, which will...

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Problems solved by technology

[0003] In view of the above problems, the present invention provides a thermal system that can meet the parallel operation of two different main steam parameters of waste incineration power plants, and this system can effectively solve the problem of increased steam production of the original boiler due to the increase in the calorific value of waste. It can reduce the number of auxiliary equipment, reduce investment and operation and maintenance costs, and make full use of the heat load of the waste heat boiler with medium and low parameters, and improve the power generation efficiency and economic benefits of the power plant

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