Denitrification combustion method used for production of cement kiln

A combustion method and cement kiln technology, applied in the direction of combustion method, burner, combustion type, etc., can solve the problems of low energy utilization rate, slow energy release, poor burnout rate of pulverized coal, etc. The effect of low heat consumption and high solid-gas ratio

Inactive Publication Date: 2021-04-02
贵州省鑫瀚蓝环保科技有限公司
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Problems solved by technology

With the continuous progress and development of our country's economy and society, the rapid growth of the national economy has made the cement market demand strong, and the quality and environmental awareness have increased, making high-quality cement more and more popular. In the process of cement kiln production, it is necessary to use As far as the kiln tail firing system technology, that is, the denitrification combustion technology, most of its processes adopt procedural combustion, which has slow energy release, poor heat exchange rate, and poor burnout rate of pulverized coal in the calciner. In actual operation, a little If you do not pay attention, the pulverized coal will burn in the preheater, causing the preheater to be blocked, the energy utilization rate is not high, the cost is increased, and the practicability is not good

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  • Denitrification combustion method used for production of cement kiln

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] combined with figure 1 A denitrification combustion method for cement kiln production, comprising a smoke chamber, a calciner and a tertiary air duct, one end of the smoke chamber is connected to the calciner through a pipe, the other end of the smoke chamber is connected to the cement kiln, the The tertiary air pipe is connected with the calciner, and the top of the smoke chamber is equipped with a coal feeding device and a fourth-stage feeding pipe.

[0013] The coal feeding device is a swirl diffusion burner, and a coal injection nozzle is arranged on the swirl diffusion type burner. The coal injection nozzle is inclined downward and extends into the smoke chamber. The inclination angle of the coal injection nozzle is 5°-20°, and the length of the coal injection nozzle deep into the smoke chamber is 5cm-20cm.

[0014] The working principle of the ...

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Abstract

The invention discloses a denitrification combustion method used for production of a cement kiln. The denitrification combustion method comprises a smoke chamber, a decomposition furnace and a tertiary air duct, wherein one end of the smoke chamber is connected with the decomposition furnace through a pipeline, the other end of the smoke chamber is connected with the cement kiln, the tertiary airduct is connected with the decomposition furnace, and a coal feeding device and a four-stage blanking pipe are arranged at the top of the smoke chamber. Compared with the prior art, the denitrification combustion method used for production of the cement kiln has the advantages of being high in reliability, high in resource utilization rate and low in running cost.

Description

technical field [0001] The invention relates to the technical field of cement kiln production, in particular to a denitrification combustion method for cement kiln production. Background technique [0002] Cement kilns are generally called cement rotary kilns, which belong to building materials and equipment. They are a kind of lime kiln. The main equipment of raw material dry method and wet method production line. With the continuous progress and development of our country's economy and society, the rapid growth of the national economy has made the cement market demand strong, and the quality and environmental awareness have increased, making high-quality cement more and more popular. In the process of cement kiln production, it is necessary to use As far as the kiln tail firing system technology, that is, the denitrification combustion technology, most of its processes adopt procedural combustion, which has slow energy release, poor heat exchange rate, and poor burnout ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B7/10F27B7/20F27B7/34F23D1/02
CPCF27B7/10F27B7/34F27B7/20F23D1/02F27B7/2016
Inventor 苏舜峰林渊标罗祥翰郭志辉
Owner 贵州省鑫瀚蓝环保科技有限公司
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