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Device for generating electricity from waste heat of raw coke oven gas

A waste heat power generation and power generation device technology, which is applied in the heating of coke ovens, carbonization gas discharge devices, coke ovens, etc., can solve the problems of inability to fully recover and utilize waste heat resources of raw coal gas, narrow space structure, and influence of hot surface layout, etc. , to achieve the effects of reducing energy consumption, improving steam quality, and reducing power consumption

Active Publication Date: 2014-07-16
SHANGHAI BAOSTEEL ENERGY TECH
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Problems solved by technology

[0005] The object of the present invention is to provide a coke oven raw gas waste heat power generation device to solve the problem that the coke oven waste gas waste heat recovery device in the prior art generally adopts a riser device with a waste heat recovery function, but due to its narrow space structure, the heating surface The layout is affected, and the waste heat resources of raw gas cannot be fully recovered and utilized, resulting in technical problems that are difficult to promote

Method used

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  • Device for generating electricity from waste heat of raw coke oven gas

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] see figure 1 , the coke oven waste gas waste heat power generation device of the present invention includes a heat extraction subsystem and a power generation subsystem, and the heat extraction subsystem includes a superheater 3, a bridge tube evaporator 4, a steam drum 5 and a deoxygenation and desalination water supply device, and the superheater 3 is installed in the riser pipe 1 of the coke oven 8, the bridge pipe evaporator 4 is arranged in the bridge pipe 2, the outlet 11 of the riser pipe 1 is connected with the raw gas inlet 41 of the bridge pipe 2 through a pipe, and the deoxygenation and desalination water supply device The outlet is connected to the deoxygenated and desalted water inlet of the evaporator 4, the steam-water outlet 42 of the bridge tube evaporator is connected to the steam-water mixture inlet of the steam drum 5, the saturated steam o...

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Abstract

The invention relates to a device for generating electricity from waste heat of raw coke oven gas, which comprises a heat extraction subsystem and an electricity generation subsystem, wherein the heat extraction subsystem further comprises a superheater arranged in an ascending pipe and an evaporator arranged in a bridge pipe; a liquid working medium is formed into superheated vapor through the heat extraction subsystem; and the superheated vapor heats a working medium in the electricity generation subsystem and drives a dynamic electricity generator set to generate electricity. By arranging the heat exchangers in the ascending pipe and the bridge pipe, waste heat of raw coke oven gas can be sufficiently absorbed and be utilized to perform electricity generation, thereby lowering procedure energy consumption of a coke oven, saving energy, reducing emission and achieving favorable economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of industrial waste heat recovery and utilization, in particular to a coke oven raw gas waste heat power generation device. Background technique [0002] As a high-energy-consuming industry, the coking industry has attracted much attention. During the coking process of the coke oven, the temperature of the raw gas in the coke oven riser is as high as 750°C, which contains a large amount of sensible heat. In order to reduce the temperature of the raw gas in the coke oven and facilitate the subsequent coking process, the traditional process adopts the quenching process of spraying ammonia water to cool the high-temperature raw gas. The circulating ammonia is sprayed through the bridge pipe and the gas collection pipe to directly contact the raw gas, and the raw gas is rapidly cooled to 80-85°C by the large amount of gasification of the circulating ammonia. After cooling, the raw gas is indirectly cooled to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B27/00F01K25/10
CPCY02P20/129
Inventor 曹先常王芳
Owner SHANGHAI BAOSTEEL ENERGY TECH
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