摘要
分析了我国焦化行业SO_2、NO_x排放现状及污染物浓度的主要影响因素,对比了以氨法、石灰/石灰石法、双碱法、氧化镁法、喷雾干燥法、循环流化床法等为代表的焦炉烟气脱硫技术,以低氮燃烧技术、低温选择性催化还原脱硝技术、氧化脱硝等为代表的焦炉烟气脱硝技术,以活性焦、液态催化氧化等为代表的焦炉烟气脱硫脱硝一体化技术的工艺原理、脱硫脱硝效率及各自优缺点;总结了焦炉烟气脱硫脱硝技术在工艺路线选择、烟气排放、次生污染等方面存在的问题。指出焦炉烟气污染治理需有效融合源头控制、低氮燃烧、末端净化3方面,并不断加强焦炉操作管理水平及新技术的应用。
SO2 and NOx emission status and the main influencing factors of pollutant concentration in coking industry in China were ana- lyzed. This paper also compared the process principle, desulfurization and denitrification efficiency and their advantages and disadvantages of the desulfurization technology （ i. e. , ammonia desulfurization, limestone-gypsum desulfurization, double alkali desulfurization, MgO des- ulfurization, spray drying desulfurization and circulating fluidized bed desulfurization ） , denitrification technology （low NOx combustion technology, SCR denitrification, oxidation denitrification） and integrated desulfurization and denitrification technology （active coke desulfu- rization and denitrification and LCO desulfurization and denitrification）. The route selection, flue gas emission, secondary pollution and oth- ers problems were summarized. It is pointed out that the pollution control of coke oven flue gas should effectively integrate the source con- trol, low nitrogen combustion and ending purification, and the coke oven management level and the application of new technology should al- so be strengthened.
作者
王岩
张飏
郭珊珊
白效言
周琦
王之正
WANG Yan;ZHANG Yang;GUO Shanshan;BAI Xiaoyan;ZHOU Qi;WANG Zhizheng(Coal Chemistry Branch of China Coal Research Institute,Beijing 100013, China;Graduate School of China Coal Research Institute, Beijing 100013 ,China;State Key Laboratory of High Efficient Mining and Clean Utilization of Coal Resources,Beijing 100013 ,China)
出处
《洁净煤技术》
CAS
2017年第6期1-6,共6页
Clean Coal Technology
基金
国家高技术研究发展计划(863计划)资助项目(2015AA050505)
关键词
焦炉烟气
脱硫脱硝
污染物浓度
次生污染
一体化脱除
coke oven flue gas
desulfurization and denitrification
pollutant concentration
secondary pollution
integrated removal
