Desulfurization and denitration integrative process for coke oven flue gas using dual ammonia solution: from laboratory to industrial test

TANG Zhigang; HE Zhimin; Ebrahim; GUO Dong; ZHAO Zhijun; XING Xiao; WEN Yanming; WANG Dengfu; JIANG Aiguo; KANG Chunqing; LIU Jingxue

doi:10.11949/j.issn.0438-1157.20161109

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Desulfurization and denitration integrative process for coke oven flue gas using dual ammonia solution: from laboratory to industrial test

更新时间：2025-12-10

- Desulfurization and denitration integrative process for coke oven flue gas using dual ammonia solution: from laboratory to industrial test
- CIESC Journal Issue 2, Pages: 496-508(2017)
- 作者机构：
  
  1. 化学工程联合国家重点实验室, 清华大学化学工程系,北京,100084
  2. 中国炼焦协会专家委员会,北京,100010
  3. 济南冶金化工设备有限公司,山东,济南,250300
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161109
  CLC： Q520
- Online First：05 February 2017，
  
  Published：05 February 2017
- 稿件说明：
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TANG Zhigang, HE Zhimin, Ebrahim, et al. Desulfurization and denitration integrative process for coke oven flue gas using dual ammonia solution: from laboratory to industrial test[J]. CIESC Journal, 2017, (2): 496-508.
DOI：

TANG Zhigang, HE Zhimin, Ebrahim, et al. Desulfurization and denitration integrative process for coke oven flue gas using dual ammonia solution: from laboratory to industrial test[J]. CIESC Journal, 2017, (2): 496-508. DOI： 10.11949/j.issn.0438-1157.20161109.

摘要

针对目前焦炉烟道气脱硫脱硝方法设备投资和运行成本偏高的不足，提出双氨法一体化脱硫脱硝工艺，充分利用焦化自产浓氨水作为脱硫脱硝剂，利用焦化自有硫铵工序作为脱硫脱硝产品的资源化平台，将脱硫脱硝工艺有机“镶嵌”入焦化主工艺。实验研究了臭氧用量、氨水浓度、温度等对脱硫脱硝的影响，通过模拟计算优化了浓氨水用量、循环喷淋量等工业脱硫脱硝塔的关键参数，最终设计了双氨法一体化脱硫脱硝工业实验流程，并选择自分布式多降液管斜孔塔板作为一体化脱硫脱硝塔的内件。结合工艺设计、设备设计，最终建成处理10×104m3·h-1的焦炉烟道气脱硫脱硝工业实验装置，脱硫脱硝后烟道气SO2和NO可分别降至10 mg·m-3和150mg·m-3以下，完全满足GB 16171-2012的要求。

Abstract

An Integrated method of desulfurization and denitrification using dual ammonia solution (DAS) is presented to treat coke oven flue gas

which has advantages of low investment and operating costs. It not only makes full use of ammonia produced from coking main process as desulfurization and denitration agent but also produces ammonia sulfate product with the current devices. Firstly

the impact of the amount of ozone

ammonia concentration and temperature is experimentally studied

the amount of ammonia aqueous solution and flow-rate of circulating absorbent in industry test is optimized by simulation

finally

a novel multi down-comer (MD) slant-hole tray (SHT) with liquid self-distribution is designed and used as the internals for integrative desulfurization and denitration tower in industry test. Combing the process and device designing

an industrial test system of integrative desulfurization and denitration for coke-oven flue gas with feedstock as 10×104 m3·h-1 is completed. After a long and stable operation

concentration of SO2 and NO in emission flue gas after purification

respectively

can be reduced below 10 mg·m-3 and 150 mg·m-3

satisfactorily meets the requirements of GB 16171-2012.

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