回转窑窑尾烟气SDS干法脱硫除尘的优化分析

耐火与石灰 ›› 2021, Vol. 46 ›› Issue (3): 5-9.

回转窑窑尾烟气SDS干法脱硫除尘的优化分析

周英贵

江苏世清环保科技有限公司，南京210012

出版日期:2021-06-10 发布日期:2021-07-12

Optimization analysis of SDS dry desulfurization and dedusting of flue gas from rotary kiln tail#br#

Zhou Yinggui

Jiangsu Slean Environmental Protection Technology Co.,Ltd., Nanjing 210012, China

Online:2021-06-10 Published:2021-07-12

摘要/Abstract

摘要：

镁钙砂煅烧用回转窑窑尾排烟温度在180~220 ℃之间，烟气中含有二氧化硫和粉尘等污染物。针对回转窑窑尾烟气对环境造成污染问题，配置了高效碳酸氢钠干粉喷射SDS干法脱硫除尘系统。本文阐述了SDS脱硫技术原理、流程和影响因素分析，并在实际项目中探究了镁钙砂回转窑烟气中二氧化硫和粉尘的去除效果。结果表明，在实际运行中采用SDS干法脱硫+布袋除尘工艺处理后，烟气能够达到超低排放要求，即二氧化硫排放浓度≤35 mg/m3，粉尘排放浓度≤10 mg/m3。该项目投运后所产生的脱硫副产物可综合回收利用作为水泥添加剂辅料。该技术已成功推广应用到其他回转窑、焦炉和水泥窑烟气脱硫项目中，并取得了较好的应用效果。

关键词: 回转窑, SDS干法脱硫, 布袋除尘, 超低排放

Abstract: The temperature of flue gas from the rotary kiln is about 180 ℃ to 220 ℃,and the flue gas contains pollutants such as sulfur dioxide and dust.In view of the environmental pollution caused by the flue gas from the kiln tail,an efficient sodium bicarbonate dry powder spray SDS dry desulfurization and dust removal system is equipped.This paper describes the principle,process and influencing factors of SDS desulfurization technology,and explores the removal effect of SO2 and dust from flue gas of calcium magnesiun sand rotary kiln in a project.The results show that the flue gas can meet the requirements of ultra-low emission,that is,the emission concentration of sulfur dioxide belows 35 mg/m3,the emission concentration of dust belows 10 mg/m3.After the project is put into operation,the main component of desulfurization by-product can be recycled as cement additive.The technology has been successfully applied to other flue gas desulfurization projects of rotary kiln,coke oven and cement kiln,and achieved

good application results.

Key words: Rotary kiln, SDS dry desulfurization, Bag filter, Ultra-low emission

中图分类号:

TQ175.653.6

周英贵. 回转窑窑尾烟气SDS干法脱硫除尘的优化分析[J]. 耐火与石灰, 2021, 46(3): 5-9.

Zhou Yinggui. Optimization analysis of SDS dry desulfurization and dedusting of flue gas from rotary kiln tail#br#[J]. REFRACTORIES & LIME, 2021, 46(3): 5-9.

[1]	范兰王加东冒亚峰. 小苏打粉脱硫在石灰回转窑烟气净化中的应用[J]. 耐火与石灰, 2020, 45(5): 46-47.
[2]	刘宝山李国军谢文峰. 冶金石灰回转窑结圈分析与措施[J]. 耐火与石灰, 2020, 45(2): 30-31.
[3]	贺俊王守权. 使用活性石灰回转窑生产轻烧白云石和冶金石灰[J]. 耐火与石灰, 2020, 45(1): 28-30.
[4]	高松陈仲颖. 回转窑窑尾烟气超低排放工艺探讨[J]. 耐火与石灰, 2019, 44(5): 29-32.
[5]	张银斌;胡显阳 . 气烧石灰竖窑烟气净化工艺技术改进[J]. 耐火与石灰, 2010, 35(5): 9-10.