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Complete equipment for denitration method in boiler

A complete set of equipment, boiler furnace technology, applied in the direction of lighting and heating equipment, separation methods, chemical instruments and methods, etc., can solve the problems of uneven mixing of reducing agent and NOx, low denitrification efficiency, etc., to increase production rate and improve denitrification Efficiency, the effect of simple equipment structure

Inactive Publication Date: 2018-01-26
盐城市吉盛达环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The denitrification method can also be divided into boiler furnace denitrification and out-of-furnace denitrification; in furnace denitrification, there are defects such as uneven mixing of reducing agent and NOx, low denitrification efficiency, etc.

Method used

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  • Complete equipment for denitration method in boiler

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 , a complete set of equipment for denitrification in a boiler, including a boiler located in the flue gas pipeline

[0025] Ammonia gas generating device; the ammonia gas generating device includes a urea decomposition chamber 21 and a stirrer; the urea decomposition chamber 21 is fixed on the pipe wall of the flue gas pipeline 1, and there is an ammonia gas outlet 25 above the urea decomposition chamber 21; The agitator includes a motor 23, a stirring shaft 24 and a stirring paddle 22. The stirring paddle 22 extends into the urea decomposition chamber 21, and the motor 23 is fixed on the outside of the pipe wall of the flue gas pipeline 1; Fully decomposed into ammonia gas under high temperature and stirring;

[0026] Gas mixing device; including a flue gas guide pipe 31, a flue gas sleeve 32 and an ammonia gas mixing pipe 33, the flue gas guide pipe 31 is parallel to the flue gas pipeline 1, and the installation position is adjacent to the urea decomposi...

Embodiment 2

[0029] see figure 1 , as an improvement of the present invention, the complete set of equipment also includes a gas stirring device 34, the stirring paddle of the gas stirring device is arranged between the gas mixing device and the catalyst cage, and the stirring device 34 further mixes the ammonia gas and the flue gas. The nitrogen oxides are mixed evenly.

[0030] The rest of the structure and advantages are exactly the same as in Embodiment 1.

Embodiment 3

[0032] see figure 1 , as an improvement of the present invention, the complete set of equipment also includes a gas distribution plate 35, the gas distribution plate 35 is a porous plate, fixed on the pipe wall of the flue gas pipeline 1 between the gas stirring device and the catalyst cage 4 , so that the mixed gas can move up evenly.

[0033] The rest of the structure and advantages are exactly the same as in Embodiment 1.

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Abstract

The invention belongs to the field of environment-friendly equipment and particularly relates to complete equipment for a denitration method in a boiler. The complete equipment comprises an ammonia gas generating device, a gas mixing device and a catalyst cage. The yield of a target product ammonia gas is increased by using the ammonia gas generating device arranged in the boiler and high-temperature polymerized urea in the boiler, extra supply of energy is avoided and energy consumption is reduced; by arranging the gas mixing device, the ammonia gas overflows from a plurality of opening holesin the wall of an ammonia gas mixing pipe and is sufficiently mixed with NOx in high-temperature flue gas in a sleeve pipe; by arranging the catalyst cage, the ammonia gas and the NOx which are uniformly mixed repeatedly react under the action of high temperature and a catalyst, so that the denitration efficiency is greatly improved. The equipment disclosed by the invention has the advantages ofsimple structure, energy consumption conservation, greenness, environment friendliness and suitability for industrial denitration.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a complete set of equipment for denitrification in a boiler furnace. Background technique [0002] Nitrogen oxide (NOx) is a gas produced due to the oxidation of nitrogen during the combustion process. It not only stimulates the human respiratory system, damages animals and plants, and destroys the ozone layer, but also is one of the main substances that cause the greenhouse effect, acid rain and photochemical reactions. one. [0003] At present, the main methods of denitrification can be roughly divided into the following four types: [0004] (1) Low-nitrogen combustion technology, that is, controlling the formation of nitrogen oxides in the combustion process, is mainly suitable for large coal-fired boilers, etc.; low-NOx combustion technology can only reduce NOx emissions by 30-50%, and it is necessary to further reduce NOx emissions. E...

Claims

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Application Information

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IPC IPC(8): B01D53/90B01D53/56F23J15/04
Inventor 韩基梅郭必涛李红兵周跃邦
Owner 盐城市吉盛达环保工程有限公司