脱硝分解炉的设计及实际应用
卫辉市天瑞水泥有限公司,河南 新乡 453100
Design and Practical Application of Denitration Calciner
Weihui Tianrui Cement Co., Ltd. , Xinxiang Henan 453100, China
摘要
对水泥烧成系统的氮氧化物形成机理进行了分析,形成了脱硝分解炉的设计思路。脱硝分解炉的设计思路为,通过提高三次风管高度,降低分解炉喂煤点位置,在中间形成一个缺氧区域,在分解炉下部创建脱硝还原区,最终将回转窑内生成的氮氧化物全部还原。实际改造项目显示,脱硝分解炉结合SNCR系统,可将系统氮氧化物排放浓度控制在50mg/Nm3 以下,同时可大幅减少氨水使用量。
关键词:
分解炉
氮氧化物
超低排放
Abstract:
The formation mechanism of nitrogen oxides was analyzed, and the design idea of denitration calciner was formed. The design idea of denitration calciner is to increase the height of the tertiary air duct, reduce the position of coal feeding point in the calciner, form an anoxic area in the middle, and create a denitration reduction area in the lower part of the calciner, and finally reduce all the nitrogen oxides generated in the rotary kiln. The actual transformation project shows that the emission concentration of nitrogen oxides combined with SNCR system can be controlled within 50mg/Nm3 , and the consumption of ammonia water is greatly reduced.
Key words:
calciner
nitrogen oxides
ultra-low emission
收稿日期: 2021-12-22
出版日期: 2022-03-25
发布日期: 2022-03-25
整期出版日期: 2022-03-25
引用本文:
赵睿敏, 于永现, 凌金辉, 闫艳选. 脱硝分解炉的设计及实际应用[J]. 水泥技术, 2022, 1(2): 40-45.
ZHAO Ruimin, YU Yongxian, LING Jinhui, YAN Yanxuan. Design and Practical Application of Denitration Calciner. Cement Technology, 2022, 1(2): 40-45.
链接本文:
http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20222040
或
http://www.cemteck.com/CN/Y2022/V1/I2/40
[1]
. Review and Prospect of Engineering Practice of Waste Disposal in Cement Kiln in China [J]. Cement Technology, 2018, 1(1): 17
-21
.
[2]
DI Dongren, TAO Congxi, CHAI Xingteng. Revision of Cement Energy Consumption Standards and Energy Saving Technology(Ⅰ) [J]. Cement Technology, 2018, 1(1): 22
-26
.
[3]
LIU Yonggang, GAO Hongwei, XIAO Guiqing. Design Method of Road Structure Using Lean Concrete Base [J]. Cement Technology, 2018, 1(1): 27
-31
.
[4]
LIU Xu, LI Liang. Investigation of New Medium Temperature Wear-resistant Alloy Steel [J]. Cement Technology, 2018, 1(1): 32
-34
.
[5]
MA Debao. Finite Element Analysis of Inverted Cone in Raw Meal Silo [J]. Cement Technology, 2018, 1(1): 35
-38
.
[6]
HAN Zhongqi. [J]. Cement Technology, 2018, 1(1): 38
-48
.
[7]
XIE Jianzhong, LIAN Xuewen. Analysis and Solution of Segregation of the Kiln Ash in Continuous Raw Meal Homogenization Silo#br# [J]. Cement Technology, 2018, 1(1): 49
-53
.
[8]
GUAN Laiqing, HE Yongxian. [J]. Cement Technology, 2018, 1(1): 54
-59
.
[9]
WEI Can, ZHANG Yuanyuan, AI Jun. Application of Cement Intelligent Control System in Overseas Projects [J]. Cement Technology, 2018, 1(1): 60
-64
.
[10]
JIN Shuang. [J]. Cement Technology, 2018, 1(1): 72
-73
.
Viewed
Full text
Abstract
Cited
Shared
Discussed