A system for comprehensive cascade utilization of heat recovery and waste heat in thermal power generation

A thermal power generation and waste heat technology, which is applied in preheating, steam generation, feed water heaters, etc., can solve the problems of insufficient heat recovery in the steam-water system, low recovery and utilization rate of waste heat from boiler flue gas and exhaust steam from turbines, etc.

Inactive Publication Date: 2017-07-14
郝江平
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problem of insufficient air reheating (air preheating) of boiler flue gas of existing thermal power generating units, insufficient reheating (feed water heating) of the steam-water system, and low recovery and utilization rate of boiler flue gas waste heat and steam turbine exhaust waste heat. Problem, the present invention provides a system for comprehensive cascade utilization of heat recovery and waste heat in thermal power generation

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  • A system for comprehensive cascade utilization of heat recovery and waste heat in thermal power generation

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Embodiment Construction

[0134] The present invention will be further described now in conjunction with accompanying drawing.

[0135] Such as figure 1 Shown, the object of the present invention is, in order to solve existing thermal power generation unit boiler flue gas air reheating (air preheating) deficiency, steam-water system reheating (feed water heating) deficiency and boiler flue gas waste heat and turbine exhaust steam waste heat recovery and utilization To solve the problem of low efficiency, the present invention provides a comprehensive cascade utilization system for heat recovery and waste heat of thermal power generation.

[0136] The present invention provides a comprehensive cascade utilization system for heat recovery and waste heat of thermal power generation, the system includes: air preheater subsystem, main condensate water subsystem, condensate water temperature water supply subsystem, condensate water low temperature water supply subsystem, The flue gas cooling condensate subs...

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Abstract

The invention relates to a comprehensive gradient utilization system of recovered heat and waste heat of thermal power generation. The comprehensive gradient utilization system comprises an air pre-heater subsystem, a main condensation water subsystem, a medium temperature condensation water supply subsystem, a low temperature condensation water supply subsystem, a smoke cooling condensation water subsystem and an air heating condensation water subsystem. The air pre-heater subsystem is connected with the smoke cooling condensation water subsystem, the medium temperature condensation water supply subsystem, the low temperature condensation water supply subsystem and the air heating condensation water subsystem and then is connected to the main condensation water subsystem in a collected mode.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a system for comprehensive cascaded utilization of heat recovery and waste heat of thermal power generation. Background technique [0002] In the thermal power generation system, adopting the heat recovery method is an important means to improve the efficiency of the thermal cycle system. According to the heat recovery cycle of steam turbine extraction to heat condensate water and feed water, on the one hand, it can reduce the cold source loss of steam turbine exhaust, on the other hand, the heat recovery system can increase the boiler feed water temperature, thereby reducing the irreversibility caused by the boiler heat transfer temperature difference with loss. The increase of feed water temperature also increases the flue gas temperature after heating the feed water. The flue gas with higher temperature is usually reheated through the air preheater to prehe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23L15/00F23J15/06F22D1/34
CPCF22D1/34F23J15/06F23L15/00F23L2900/15043F23L2900/15044Y02E20/34
Inventor 郝江平
Owner 郝江平
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