摘要
选取我国北方某焦化生产集中区内两家典型焦化企业进行了VOCs采样分析,利用最大增量反应活性法计算了臭氧生成潜势(OFP)贡献占比,并据此提出针对性治理建议。有组织排放口、无组织排放单元及区域环境测得的VOCs组分依次为55、27、21种,分为单环芳烃、含氧VOCs、多环芳烃、烷烃、烯烃、卤代烃及其他共7大类别,以萘、茚、苯、甲苯以及几种二甲苯、三甲苯的同分异构体为主要成分。各有组织排放口排放的主要VOCs为萘、苯、甲苯、二甲苯、乙基甲苯、三甲苯,其中萘在装煤地面站、苯在脱苯洗净塔排放口、甲苯在脱苯洗净塔排放口废气中的OFP贡献占比最大,分别为30.71%,30.98%,59.27%。无组织排放源主要VOCs为萘、苯、甲苯、甲基萘、二甲苯,其中萘、苯、甲苯的OFP贡献占比范围为12%~30%,18%~40%,10%~20%。
Two typical coking enterprises were selected for VOCs sampling analysis,and the contribution ratio of ozone generation potential(OFP)was calculated by using the maximum incremental reactivity method,and corresponding treatment suggestions were put forward accordingly.The components of VOCs measured in organized discharge outlets,unorganized discharge units and regional environment are 55,27 and 21 kinds,respectively,which are divided into 7 categories:monocyclic aromatic hydrocarbons,oxygen-containing VOCs,polycyclic aromatic hydrocarbons,alkanes,alkenes,halogenated hydrocarbons and others.The main components are naphthalene,indene,benzene,toluene and several isomers of xylene and tritoluene.Naphthalene,benzene,toluene,xylene,ethyltoluene,and tritoluene are the main VOCs discharged from each organization outlet.The larger OFP contribution is from naphthalene in the coal loading ground station,benzene at the outlet of the benzene removing washing tower and toluene in the waste gas at the outlet of the benzene removing washing tower,accounting for 30.71%,30.98%,59.27%,respectively.Naphthalene,benzene,toluene,methyl naphthalene and xylene are the main VOCs sources of non-organized emissions,and the OFP contribution of naphthalene,benzene and toluene is 12%-30%,18%-40%and 10%-20%.
作者
郭鹏
仝纪龙
陈冰
刘永乐
杨宏
陈敏
GUO Peng;TONG Jilong;CHEN Bing;LIU Yongle;YANG Hong;CHEN Min(College of Atmospheric Science,Lanzhou University,Lanzhou 730000,China)
出处
《化工环保》
CAS
CSCD
北大核心
2021年第4期485-493,共9页
Environmental Protection of Chemical Industry
基金
国家自然科学基金项目(41875085)。
关键词
焦化生产
VOCs排放特征
成分谱
臭氧生成潜势
coking production
VOCs emission characteristic
composition spectrum
ozone formation potential
