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A method and device for energy saving and emission reduction of waste gas/pollutants in coking enterprises

A technology for energy saving, emission reduction and pollutants, applied in chemical instruments and methods, separation methods, chemical industry, etc., can solve the problems of pollution, air pollution, backward production technology, etc., to reduce emissions, high efficiency and low cost, reduce The effect of cumulative impact

Active Publication Date: 2020-10-02
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the coking industry has the following common air pollution prevention and control problems: First, pay attention to smoke, SO 2 , NO x control measures for other gaseous pollutants (such as polycyclic aromatic hydrocarbons, CO, etc.) in the process of coal loading and coke discharge; Cycloaromatic hydrocarbons, strong carcinogens of benzopyrene, hydrogen cyanide, H 2 S and ammonia and other environmental odorous gases, smoke, etc.) are seriously polluted, and no effective control measures have been taken; third, some coking enterprises have backward production processes, such as wet coke quenching technology, which will cause serious air pollution

Method used

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  • A method and device for energy saving and emission reduction of waste gas/pollutants in coking enterprises

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Comparison scheme
Effect test

Embodiment 1

[0054] A coking enterprise waste gas / pollutant energy saving and emission reduction method, comprising:

[0055] The exhaust gas generated during the coke oven charging and coke discharge process enters the second dust removal device, and the first circulation fan enters the coke oven combustion chamber through the combustion-supporting gas inlet;

[0056] The high-temperature coke produced in the carbonization chamber of the coke oven is subjected to primary cooling and secondary cooling respectively through the first cooling device and the second cooling device in the coke airtight conveying device through the coke outlet to obtain primary cooling coke and secondary cooling coke. The final coke is transported to the coke drying platform; the temperature of the first-stage cooling coke is 200°C, and the temperature of the second-stage cooling coke is 50°C;

[0057] The gas of the first cooling device is the flue gas generated by the combustion chamber, which passes through th...

Embodiment 2

[0062] A coking enterprise waste gas / pollutant energy saving and emission reduction method, comprising:

[0063] The exhaust gas generated during the coke oven charging and coke discharge process enters the second dust removal device, and the first circulation fan enters the coke oven combustion chamber through the combustion-supporting gas inlet;

[0064] The high-temperature coke produced in the carbonization chamber of the coke oven is subjected to primary cooling and secondary cooling respectively through the first cooling device and the second cooling device contained in the coke airtight conveying device through the coke outlet to obtain primary cooling coke and secondary cooling coke; cooling The final coke is transported to the coke drying platform; the temperature of the first-stage cooling coke is 220°C, and the temperature of the second-stage cooling coke is 80°C;

[0065] The gas of the first cooling device is the flue gas generated by the combustion chamber, which...

Embodiment 3

[0070] A coking enterprise waste gas / pollutant energy saving and emission reduction method, comprising:

[0071] The exhaust gas generated during the coke oven charging and coke discharge process enters the second dust removal device, and the first circulation fan enters the coke oven combustion chamber through the combustion-supporting gas inlet;

[0072] The high-temperature coke produced in the carbonization chamber of the coke oven passes through the coke outlet through the first cooling device and the second cooling device contained in the coke airtight conveying device to perform primary cooling and secondary cooling respectively, to obtain primary cooling coke and secondary cooling coke, cooling The final coke is transported to the coke drying platform; the temperature of the first-stage cooling coke is 190°C, and the temperature of the second-stage cooling coke is 50°C;

[0073] The gas of the first cooling device is the flue gas generated by the combustion chamber, wh...

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Abstract

The invention provides a method and a device for energy conservation and emission reduction of exhaust gas / pollutants of a coke making enterprise, and relates to the technical field of an atmosphericpollution control technology and coking industry. According to the method and the device, provided by the invention, through coal charging and coke discharging of a coke oven and gradient utilizationof a chemical process exhaust gas as combustion-supporting air in a combustion chamber of the coke oven, emission of polycyclic aromatic hydrocarbon and an environmental odorous gas is reduced; meanwhile, by adopting dry coke quenching on purified flue gas of the coke oven and combining a coke sealed conveying technology, the problem of inorganized emission of pollution during a traditional process coke conveying process can be solved. The invention provides a deep control method of a system. Exhaust gas quantity of the coke making enterprise and conventional / unconventional pollutant emissionare weakened, meanwhile, exhaust gas latent heat and combustion-supporting gas components can be economically, reasonably and efficiently utilized, and environmental benefit having different approaches but equally satisfactory results with capacity reduction of an enterprise can be achieved.

Description

technical field [0001] The invention relates to the technical fields of air pollution control technology and coking industry, in particular to a method and device for energy-saving and emission reduction of waste gas / pollutants in coking enterprises. Background technique [0002] The coking industry is one of the typical heavy polluting industries, with many sewage discharge links, high intensity, miscellaneous types and high toxicity. Compared with other industries, not only conventional pollutants (such as soot, SO 2 , NO x ) has a relatively high emission limit, and the unconventional pollutants discharged contain a large amount of carcinogens such as polycyclic aromatic hydrocarbons and benzopyrene, which have a significant impact on human health and urban ambient air quality. [0003] At present, the coking industry has the following common air pollution prevention and control problems: First, pay attention to smoke, SO 2 , NO x control measures for other gaseous po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00C10B39/02C10B45/00
CPCB01D53/00B01D2257/104B01D2257/304B01D2257/406B01D2257/408B01D2257/70B01D2257/7027C10B39/02C10B45/00Y02P20/10Y02P20/129
Inventor 张凡黄家玉刘宇陈宇于瑞王红梅束韫崔宇韬张辰王凡
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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