化工园区基于排放环节的VOCs排放特征研究  

Emission characteristics of volatile organic compounds in chemical industry park based on emission links

作　　者：何梦林[1] 肖海麟 陈小方[1] 梁小明[1] 范丽雅[1,2,3] 叶代启[1,2,3] HE Meng-lin;XIAO Hai-lin;CHEN Xiao-fang;LIANG Xiao-ming;FAN Li-ya;YE Dai-qi(College of Environment and Energy, South China University of Technology, Key Laboratory for Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China;Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, China;Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, Guangzhou 510006, China)

机构地区：[1]华南理工大学环境与能源学院工业聚集区污染控制与生态修复教育部重点实验室,广东广州510006 [2]广东省大气环境与污染控制重点实验室,广东广州510006 [3]广东省环境风险防控与应急处置工程技术研究中心,广东广州510006

出　　处：《中国环境科学》2017年第1期38-48,共11页China Environmental Science

基　　金：公益性行业科研专项(201409019);中央高校基本科研业务费专项资金(2014ZM0068)

摘　　要：以珠三角某化工园区为对象,采用TENAX吸附管采样,GC-MS分析,获取了园区内6家典型企业各排放环节的VOCs含量水平及组分特征,基于组分进行聚类分析,将27个有效点位分为6类;并利用监测数据计算了2014年分环节的排放量.研究结果表明:6家企业各排放环节VOCs浓度范围为0.2~107.02mg/m^3,大部分排放环节的VOCs浓度均超过了10mg/m^3,是厂界浓度的1~34倍,说明厂区生产装置管线和元件泄漏严重.不同企业不同排放环节VOCs物种有所差异,但绝大部分排放环节的物种以烷烃为主,其次是苯系物和含氧VOCs;除原料罐区外的大部分环节所检测到的物种与原辅材料不完全一致,这可能由于生产过程中存在相互反应生成中间产物或副产物;所检测企业中,YH储运的VOCs年排放总量为1864.97t,而其余5家企业年排放量均小于100t,企业所排放的VOCs主要来自储罐呼吸、密封点泄漏等无组织排放.VOCs emission characteristics based on emission links of representative enterprises in a typical ChemicalIndustry Park in Pearl River Delta were investigated.Sampled by TENAX tubes and analyzed by GasChromatography-Mass Spectrometry(GC-MS),the VOCs concentrations and compositions of different emission links aswell as the exhaust funnels were obtained.Cluster analysis of VOCs compositions presented six classes existing,and theamount of VOCs in2014was calculated based on emission links.The results showed that the VOCs concentrations ineach emission link of representative enterprises were0.2~107.02mg/m3,almost all samples were above10mg/m3and1~34times higher than that of enterprises’boundary concentration,which illustrates that the leakage of devices wasserious.The VOCs composition of different factories or different emission links were diversity and alkane was the mainpollutants,followed by benzene series and OVOCs.In addition,the detected compositions were inconsistent with rawmaterials in majority of factories expect storage and transportation enterprise,probably because of interreactions orby-products formation in factories.The amount of VOCs of each factory was less than100t/a expecting YH storageenterprise,which amount was1864.97t/a,and discharged mostly by fugitive emission.

关 键 词：化工园区 挥发性有机物 排放特征 排放量 

分 类 号：X511[环境科学与工程—环境工程]