煤焦化挥发性有机物排放特征 及控制技术研究  

Research on the characteristics and control technology of volatile organic compounds emission from coal coking

作　　者：崔岩 朱怀亮 乔珍 代其彬 韩侯军 田莉[2] 王吉坤 陈阳 杨芊 CUI Yan;ZHU Huailiang;QIAO Zhen;DAI Qibin;HAN Houjun;TIAN Li;WANG Jikun;CHEN Yang;YANG Qian(Hebei Fengmei Coking Co.,Ltd.,Handan,Hebei 056100,China;Jizhong Energy Fengfeng Group Co.,Ltd.,Handan,Hebei 056107,China;China Coal Processing and Utilization Association,Chaoyang,Beijing 100013,China)

机构地区：[1]河北峰煤焦化有限公司,河北省邯郸市056100 [2]冀中能源峰峰集团有限公司,河北省邯郸市056107 [3]中国煤炭加工利用协会,北京市朝阳区100013

出　　处：《中国煤炭》2023年第4期50-56,共7页China Coal

摘　　要：煤焦化企业VOCs排放具有节点多、排放量大、成分复杂、异味重、回收价值低的特点,综合各主流VOCs控制技术的净化效率及优缺点分析后发现,单一的VOCs治理技术无法满足处理要求,而采用技术集成及耦合治理是最佳途径之一。结合煤焦化各工段VOCs排放特点,提出以下VOCs治理技术手段:炼焦单元采用泄漏检测及修复技术实时监测泄漏及修复,对泄漏气体收集后与有组织废气一同处理;化产单元冷鼓、脱硫、硫铵工段采用“油洗→水洗→蒸汽加热→焦炉燃烧”处理废气,洗苯工段采用煤气负压系统或冷凝系统回收资源废气,其中冷凝回收系统针对苯储槽呼吸阀及装车口苯排放浓度瞬时升高的情况,采用“深冷冷凝回收→活性炭吸附真空脱附→装车蒸汽平衡技术”处理废气;污水处理单元采用“加盖密封收集→酸碱洗→生物滤池→活性炭/焦炭吸附”处理废气。The volatile organic compounds(VOCs)emissions of coal coking enterprise are characterized by multiple nodes,large emissions,complex components,heavy odors and low recovery value.A comprehensive analysis of the purification efficiency and the advantages and disadvantages of various mainstream VOCs control technologies shows that a single VOCs treatment technology cannot meet the control requirements,and adopting technology integration and coupling treatment is one of the best ways.Based on the characteristics of VOCs emissions in each section of coal coking,the following VOCs control technologies are proposed:the coking unit uses leak detection and repair technology to monitor and repair leaks in real time,and to collect the leaked gas for treatment together with organized waste gas;the cold drum,desulfurization,and ammonium sulfate sections of the chemical production unit use the processes of oil washing,water washing,steam heating and coke oven combustion to treat waste gas,and the benzene washing section uses a gas negative pressure system or condensation system to recover resource waste gas,and the condensation recovery system adopts the deep cooling condensation recovery,activated carbon adsorption vacuum desorption,and loading steam balance technologies to treat waste gas in response to the instantaneous increase in benzene emission concentration at the breathing valve and loading port of the benzene storage tank;the sewage treatment unit adopts the processes of cover sealed collection,acid-base washing,biological filter,activated carbon/coke adsorption to treat waste gas.

关 键 词：煤焦化企业 VOCS 排放特征 煤气负压系统 集成耦合治理技术 

分 类 号：X784[环境科学与工程—环境工程]