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Denitration system adopting staged combustion and process
The invention discloses a denitration system adopting staged combustion and a process, and belongs to the technical field of cement production. The denitration system comprises a smoke chamber and a decomposing furnace, the decomposing furnace communicates with a tertiary air pipe, a discharging assembly and a backflow assembly, and the discharging assembly comprises a pulverized coal injection pipe, a discharging pipe, a furnace inlet pipeline I and a furnace inlet pipeline II. The decomposing furnace in the staged combustion mode is adopted, the air inlet amount of the tertiary air pipe is adjusted, meanwhile, under the effect of enlarging a reduction area of the decomposing furnace, the staying time of gas in the reduction area is prolonged, under the support of introducing secondary fuel into the decomposing furnace through the furnace inlet pipeline I and the second furnace inlet pipeline II, nitrogen oxide generation amount control in the production process is achieved, the ultralow emission requirement is met, and pollution to the atmospheric environment is reduced.
本发明公开了水泥生产技术领域的一种采用分级燃烧的脱硝系统及工艺，包括烟室及分解炉，分解炉上连通有三次风管、下料组件及回流组件，下料组件包括煤粉喷入管、下料管、入炉管道一及入炉管道二。本发明采用分级燃烧方式的分解炉，通过调节三次风管的进风量，同时在加大分解炉的还原区的作用下，增加了气体在还原区停留的时间，配合入炉管道一及入炉管道二向分解炉中通入二次燃料的支持下，实现生产过程中氮氧化物生成量控制，满足超低排放需求，减少对大气环境的污染。
Denitration system adopting staged combustion and process
The invention discloses a denitration system adopting staged combustion and a process, and belongs to the technical field of cement production. The denitration system comprises a smoke chamber and a decomposing furnace, the decomposing furnace communicates with a tertiary air pipe, a discharging assembly and a backflow assembly, and the discharging assembly comprises a pulverized coal injection pipe, a discharging pipe, a furnace inlet pipeline I and a furnace inlet pipeline II. The decomposing furnace in the staged combustion mode is adopted, the air inlet amount of the tertiary air pipe is adjusted, meanwhile, under the effect of enlarging a reduction area of the decomposing furnace, the staying time of gas in the reduction area is prolonged, under the support of introducing secondary fuel into the decomposing furnace through the furnace inlet pipeline I and the second furnace inlet pipeline II, nitrogen oxide generation amount control in the production process is achieved, the ultralow emission requirement is met, and pollution to the atmospheric environment is reduced.
本发明公开了水泥生产技术领域的一种采用分级燃烧的脱硝系统及工艺，包括烟室及分解炉，分解炉上连通有三次风管、下料组件及回流组件，下料组件包括煤粉喷入管、下料管、入炉管道一及入炉管道二。本发明采用分级燃烧方式的分解炉，通过调节三次风管的进风量，同时在加大分解炉的还原区的作用下，增加了气体在还原区停留的时间，配合入炉管道一及入炉管道二向分解炉中通入二次燃料的支持下，实现生产过程中氮氧化物生成量控制，满足超低排放需求，减少对大气环境的污染。
Denitration system adopting staged combustion and process
一种采用分级燃烧的脱硝系统及工艺
XING YUCHAO (author) / WANG ZHENHAO (author) / LI DONGQIANG (author) / ZHANG YIFENG (author) / HE CAIYUN (author) / LIU CHUNCAN (author) / QIAO XIAOJIAO (author) / WANG JIAN (author) / HE WEICHAO (author)
2021-04-06
Patent
Electronic Resource
Chinese
IPC:
F27B
Industrieöfen, Schachtöfen, Brennöfen, Retorten allgemein
,
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
/
B01D
SEPARATION
,
Trennen
/
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
Method for carbon reduction and denitration of cement kiln by adopting ammonia hydrogen
| European Patent Office | 2023
Safety Analysis Report for the Icpp Denitration Process
| NTIS | 1970
NO~x abatement with the SNCR process in kiln plants with staged combustion
| British Library Online Contents | 2001