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Dry method denitration system for coke oven smoke

A coke oven and flue gas technology is applied in the field of dry denitration system of coke oven flue gas, which can solve the problems of complex system process, large amount of waste water, secondary pollution, etc., so as to ensure denitration efficiency, save energy, and reduce effluent concentration. Effect

Inactive Publication Date: 2016-03-09
德阳瑞泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent adopts the commonly used wet desulfurization process, and the system flow is complicated. When the coke oven is heated by coke oven gas, the energy consumption is high, and a large amount of waste water is formed after wet desulfurization, resulting in secondary pollution.

Method used

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  • Dry method denitration system for coke oven smoke

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Embodiment 1

[0024] A dry denitrification system for coke oven flue gas, comprising a dry powder injector 1, an intake flue 2, a coke oven 3, an SCR denitrification reactor 5, a boiler 6, and a chimney 7; the dry powder injector 1 is arranged in the inlet At the entrance of the gas flue 2, the intake flue 2 is connected to the coke oven 3, and the coke oven 3 is provided with an exhaust flue, and the exhaust flue is connected to the SCR denitration reactor 5, and the SCR denitration reactor 5 The exhaust port of the boiler is connected to the air inlet of the boiler 6, and the exhaust port of the boiler 6 is connected to the chimney 7.

Embodiment 2

[0026] A dry denitrification system for coke oven flue gas, comprising a dry powder injector 1, an intake flue 2, a coke oven 3, an SCR denitrification reactor 5, a boiler 6, and a chimney 7; the dry powder injector 1 is arranged in the inlet At the entrance of the gas flue 2, the intake flue 2 is connected to the coke oven 3, and the coke oven 3 is provided with an exhaust flue, and the exhaust flue is connected to the SCR denitration reactor 5, and the SCR denitration reactor 5 The exhaust port of the boiler is connected to the air inlet of the boiler 6, and the exhaust port of the boiler 6 is connected to the chimney 7.

[0027] The exhaust port of the boiler 6 is provided with an induced draft fan 4 .

Embodiment 3

[0029] A dry denitrification system for coke oven flue gas, comprising a dry powder injector 1, an intake flue 2, a coke oven 3, an SCR denitrification reactor 5, a boiler 6, and a chimney 7; the dry powder injector 1 is arranged in the inlet At the entrance of the gas flue 2, the intake flue 2 is connected to the coke oven 3, and the coke oven 3 is provided with an exhaust flue, and the exhaust flue is connected to the SCR denitration reactor 5, and the SCR denitration reactor 5 The exhaust port of the boiler is connected to the air inlet of the boiler 6, and the exhaust port of the boiler 6 is connected to the chimney 7.

[0030] The exhaust port of the boiler 6 is provided with an induced draft fan 4 .

[0031] An ammonia injection grid 8 is arranged between the coke oven 3 and the SCR denitration reactor 5 .

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Abstract

The invention provides a dry method denitration system for coke oven smoke. The dry method denitration system comprises a dry powder ejector, a gas inlet flue, a coke oven, an SCR denitration reactor, a boiler and a chimney. The dry powder ejector is arranged at the inlet of the gas inlet flue. The gas inlet flue is connected with the coke oven. An exhaust flue is arranged on the coke oven and connected with the SCR denitration reactor. The exhaust port of the SCR denitration reactor is connected with the gas inlet of the boiler. The exhaust port of the boiler is connected with the chimney. The system is free of secondary pollution and wastewater and waste gas discharge, and abandoned SCR catalysts can be reproduced after being recycled.

Description

technical field [0001] The invention relates to the technical field of coke oven flue gas pollutant control, in particular to a dry denitrification system for coke oven flue gas. Background technique [0002] my country's SO 2 and NO x Emissions are among the highest in the world. Studies have shown that gaseous SO 2 , NO x is the precursor of PM2.5, composed of SO 2 , NO x The amount of PM2.5 transformed by precursors such as VOCs and VOCs is more than that emitted directly. SO 2 , NO x It is one of the main substances that form acid rain. The air pollution and acid rain caused by it are becoming more and more serious, and it is seriously harmful to human health and ecological system. It has become a factor restricting the sustainable development of my country's economy and society. [0003] The treatment process of nitrogen oxides in the electric power, cement, glass and other industries is quite mature. Due to the relatively low temperature of the coke oven flue ...

Claims

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Application Information

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IPC IPC(8): B01D53/83B01D53/50B01D53/90B01D53/56
CPCB01D53/508B01D53/8625B01D2251/304B01D2257/302B01D2257/404
Inventor 郭军
Owner 德阳瑞泰科技有限公司
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