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Emission reduction method of nitrogen oxide of cement enterprises

A nitrogen oxide and enterprise technology, applied in the cement field, can solve the problems of unoptimistic emission reduction and high pressure, and achieve the effect of decreasing NOx concentration and stable and controlled working conditions.

Inactive Publication Date: 2016-07-27
廖引家
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Problems solved by technology

However, verification results in the first half of 2011 showed that NH 3 and NO X The emission reduction situation in China is not optimistic, and there is a lot of pressure

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  • Emission reduction method of nitrogen oxide of cement enterprises

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Embodiment Construction

[0007] The present invention will be described in detail below in conjunction with specific embodiments. The description in this section is only exemplary and explanatory, and should not have any limitation on the protection scope of the present invention.

[0008] The control of the denitrification burner in the cement kiln is as follows:

[0009] (1) After the kiln tail denitrification burner is put into use, the given coal feed rate lt / h will increase by 0.5 tons every 24 hours, and the maximum coal feed rate will not exceed 10% of the kiln head coal consumption. Pay close attention to the crust of the kiln tail during use;

[0010] (2) During the control period, the upper third air damper is gradually opened, and the lower third air damper is gradually closed according to the operation of the rotary kiln;

[0011] (3) Gradually adjust the material distribution of the main and auxiliary slide pipes according to the analysis data of the kiln tail and C3 outlet gas and the material d...

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Abstract

The invention discloses an emission reduction method of nitrogen oxide of cement enterprises. The emission reduction method comprises the step of controlling the operation of a denitrification burner in a cement kiln: the coal feeing amount is 1 t / h, 0.5 t of coal is added every 24 hours, and the maximum coal feeing amount is not larger than 10% that of coal used by the kiln head. According to the emission reduction method, the regulation of a denitrification device is relatively successful, a desired effect is achieved, the NOx concentration of the system is obviously reduced, the working condition of the kiln is stably controlled, and related data and certain experience are accumulated for official use.

Description

Technical field [0001] The invention relates to the technical field of cement, in particular to a nitrogen oxide emission reduction method for cement enterprises. Background technique [0002] my country has added ammonia nitrogen (NH 3 ) And nitrogen oxides (NO X ) Two binding indicators of air pollutants emitted. However, the verification results in the first half of 2011 showed that NH 3 And NO X The emission reduction situation of China is not optimistic and the pressure is great. The reason is that the Ministry of Environmental Protection believes that it is mainly the total energy consumption and NO emissions from process production. X The increase is too fast, denitrification projects such as coal-fired power plants and cement plants have not yet been carried out on a large scale, and the scale and intensity of eliminating outdated production capacity have been weakened. [0003] Because cement kilns are typical high-temperature equipment, and in the past half a century, my...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N1/02
CPCF23N1/02F23N2239/02
Inventor 廖引家
Owner 廖引家
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