Air-steam combined circulating device and air turbine circulating device

Abstract

The invention provides an air-steam combined circulating device and an air turbine circulating device, and belongs to the technical field of heat energy and power engineering. An air compressor, a boiler, a turbine, a second turbine, an afterheat boiler, a condenser, a circulating pump and a working machine are mainly used for forming the air-steam combined circulating device; the air compressor, the boiler and the turbine form an air power circulating system; the turbine provides power to the air compressor through mechanical connection; the second turbine, the afterheat boiler, the condenser and the circulating pump are formed to a steam power circulating system; and the turbine and the second turbine jointly provide the power to the working machine through mechanical connection. In this way, the air-steam combined circulating device is formed.

Description

Technical field: [0001] The invention belongs to the technical field of thermal energy and power engineering. Background technique: [0002] In traditional coal-fired thermal power generation devices, due to the influence of material pressure and temperature resistance, there is a large temperature difference between the circulating medium (circulating water and water vapor) and the gas. The larger the temperature difference, the resulting heat energy The greater the loss converted into mechanical energy, the lower the power generation efficiency. In order to improve the efficiency of converting thermal energy into mechanical energy, people have developed new technologies, such as IGCC integrated coal gasification combined cycle power generation technology that combines coal gasification technology and efficient combined cycle, pressurized fluidized bed coal-fired combined cycle, and the use of Supercritical, ultra-supercritical coal-fired power generation technologies, etc...

AI Technical Summary

Problems solved by technology

[0002] In traditional coal-fired thermal power generation devices, due to the influence of material pressure and temperature resistance, there is a large temperature difference between the circulating medium (circulating water and water vapor) and the gas. The larger the temperature difference, the resulting heat energy The greater the loss converted into mechanical energy, the lower the power generation efficiency

In order to improve the efficiency of converting thermal energy into mechanical energy, people have developed new technologies, such as IGCC integrated coal gasification combined cycle power generation technology that combines coal gasification technology and efficient combined cycle, pressurized fluidized bed coal-fired combined cycle, and the use of Supercritical, ultra-supercritical coal-fired power generation technologies, etc.; in the IGCC integrated coal gasification combined cycle, the heat loss of coal gasification and purification is too large, and the improvement of thermal efficiency is not ideal; even if the cost increase and safety performance are not considered, people find that these Technical measures failed to reduce the temperature difference between gas and circulating working fluid as much as possible

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