石化污水收集与处理环节挥发性有机物排放特征与反应活性  

Emission characteristics and reactivity of volatile organic compounds from petrochemical wastewater collection and treatment process

作　　者：曹冬冬 李兴春[1,2] 翁艺斌 薛明 徐文佳 白德豪 CAO Dongdong;LI Xingchun;WENG Yibin;XUE Ming;XU Wenjia;BAI Dehao(CNPC Research Institute of Safety&Environmental Technology,Beijing 102206,China;State Key Laboratory of Petroleum Pollution Control,Beijing 102206,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;Xinzhou Branch,PetroChina Coalbed Methane Co.Ltd.,Xinzhou 036600,China)

机构地区：[1]中国石油集团安全环保技术研究院,北京102206 [2]石油石化污染物控制与处理国家重点实验室,北京102206 [3]中国科学院过程工程研究所,北京100190 [4]中石油煤层气有限责任公司忻州分公司,山西忻州036600

出　　处：《化工环保》2022年第5期635-642,共8页Environmental Protection of Chemical Industry

基　　金：国家科技重大专项(2016ZX05040-004);中国石油重大科技专项(2016E-1208);中国石油科技专项(2016DJ6603)。

摘　　要：以某石化企业污水收集和处理环节(9个环节)为研究对象,对各污染源进行了采样和全组分分析,明确了组成特征和优势物种,并基于羟基自由基损失速率法和最大增量反应活性法开展了光化学反应活性和臭氧生成潜势的研究。化工污水处理厂的主要VOCs组分为芳香烃,质量分数为63.3%;其余环节以烷烃为主,质量分数为38.1%~82.3%。酸性水预处理装置和烯烃(乙烯、丁二烯)装置污水池是需重点控制环节。戊烷(正戊烷、异戊烷)、甲基环戊烷、环己烷、甲基环己烷、2-甲基庚烷、乙烯、丙烯、丁烯(1-丁烯、顺-2-丁烯和反-2-丁烯)、丁二烯、异戊二烯、戊烯、苯、甲苯和二甲苯是需优先管控的臭氧活性物种。Taking the wastewater collection and treatment processes (9 processes) in a petrochemical facility as the research object,sampling and full component analysis were carried out for each pollution source.The corresponding composition characteristics and key species were confirmed.The photochemical reaction activity and ozone formation potential were studied based on hydroxyl radical loss stall rate method and maximum incremental reaction activity method.Aromatics dominates VOCs in petrochemical wastewater treatment plant,contributing 63.3%(w) of total VOCs while alkane is the largest VOCs fraction of other wastewater collection and treatment processes,accounting for 38.1%-82.3%(w) of VOCs.The sewage tank in sour water pretreatment unit and olefin (ethylene,butadiene) production unit are the key control points.The ozone active species to be preferentially controlled are pentane (n-pentane,iso-pentane),methylcyclopentane,cyclohexane,methylcyclohexane,2-methylheptane,ethylene,propylene,butene (1-butene,cis-2-butene,and trans-2-butene),butadiene,isoprene,pentene,benzene,toluene,and xylene.

关 键 词：石化污水 收集与处理 挥发性有机物 臭氧生成潜势 

分 类 号：X502[环境科学与工程—环境工程]