Waste heat recovery system of phase change heat exchanger in thermal power generation enterprise

A technology of waste heat recovery system and phase change heat exchanger, which is applied in indirect heat exchangers, lighting and heating equipment, combustion product treatment, etc. Emission reduction effect

Inactive Publication Date: 2020-06-16
天津博帆科技发展有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] In thermal power plants, since there is no waste heat recovery system, the hot flue gas from the outlet of the air preheater is generally discharged direct

Method used

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  • Waste heat recovery system of phase change heat exchanger in thermal power generation enterprise
  • Waste heat recovery system of phase change heat exchanger in thermal power generation enterprise
  • Waste heat recovery system of phase change heat exchanger in thermal power generation enterprise

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the examples.

[0017] The following examples are used to illustrate the present invention, but cannot be used to limit the protection scope of the present invention. The conditions in the embodiment can be further adjusted according to the specific conditions, and the simple improvement of the method of the present invention under the premise of the concept of the present invention belongs to the protection scope of the present invention.

[0018] see Figure 1-2 , the present invention provides a technical solution: a waste heat recovery system of a phase change heat exchanger in a thermal power generation enterprise, the waste heat recovery system includes an air preheater 1, a dust collector 3, an induced draft fan 4, a desulfurization tower 5 and a heater 7, Air preheater 1, dust collector 3, induced draft fan 4 and desulfurization tower 5 are connected through pipelines in sequence, the air...

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Abstract

The invention belongs to the technical field of waste heat recovery of thermal power generation, and particularly relates to a waste heat recovery system of a phase change heat exchanger in a thermalpower generation enterprise. The waste heat recovery system comprises an air preheater, a dust remover, an induced draft fan, a desulfurization tower and a fan heater, the air preheater, the dust remover, the induced draft fan and the desulfurization tower sequentially communicate through pipelines, an air outlet of the fan heater communicates with an air inlet of the air preheater, and an air outlet of the air preheater is connected with a flue gas cooler through a pipeline, an air outlet of the flue gas cooler communicates with an air inlet of the dust remover, and an air outlet of the desulfurization tower is provided with a flue gas reheater. According to the waste heat recovery system, pollution emission can be effectively reduced, a heat exchanger after desulfurization can be added on a heat supply secondary water return side or a condensation water side, a good energy recovery effect can be achieved, waste heat can be further utilized to heat only cold air of a boiler, smoke temperature of an air preheater outlet is improved, and the utilization efficiency of thermal power generation energy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery of thermal power generation, and in particular relates to a waste heat recovery system of a phase change heat exchanger in a thermal power generation enterprise. Background technique [0002] Thermal power generation enterprises use the heat generated by coal combustion to heat the boiler feed water to generate high-temperature and high-pressure steam, which drives the steam turbine to the generator to generate electricity. The whole process is an energy conversion process, where the heat energy released by coal is converted into electric energy. The conversion efficiency of heat energy restricts the economy of thermal power generation enterprises, especially the exhaust heat loss of steam turbines and the exhaust smoke loss of boilers account for a large weight. [0003] In thermal power plants, since there is no waste heat recovery system, the hot flue gas from the outlet of the air ...

Claims

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Application Information

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IPC IPC(8): F23J15/06F23J15/08F23J15/02F23L15/04F28D21/00
CPCF23J15/02F23J15/022F23J15/06F23J15/08F23J2215/20F23L15/045F28D21/001Y02E20/34
Inventor 张于峰
Owner 天津博帆科技发展有限公司
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