石化企业挥发性有机物排放特征及污染潜势研究  

Characteristics and pollution potential of volatile organic compounds( VOCs) emission from petrochemical factory

作　　者：高翔[1] 展先辉 张骥[1] 郑涛[1] 张震[1] 

机构地区：[1]天津市环境监测中心,天津300191

出　　处：《现代化工》2016年第3期6-10,共5页Modern Chemical Industry

基　　金：国家科技支撑计划课题(2014BAC23B02);天津市科技计划项目(13ZCZDSF14600);环保部公益行业科研专项(201409014)

摘　　要：在调查石化企业生产工艺的基础上,采用吸附管吸附-热脱附/气相色谱-质谱法,对石化企业硫磺回收工艺废气、PX工艺加热炉废气、厂区污水处理废气及厂界环境空气进行了采样分析。对各排放源的挥发性有机物(VOCs)的排放水平及源成分进行了研究,并对排放源的污染潜势进行了评估分析。结果表明,石化企业以上排放源VOCs的排放质量浓度在32~95 mg/m^3,环境质量浓度在1.5 mg/m^3左右;共定量检测出21种挥发性有机物,各排放源的排放特征与工艺密切相关。此外,芳香烃类化合物为石化企业首要光化学污染物类别,主要光化学污染物包括:甲苯、苯。Based on the investigation of the production process of petrochemical enterprises,the combined sorbent tube adsorption-thermal desorption / gas chromatography-mass spectrometry is used to sample and analyze the emissions from sulfur recovery unit,heating furnace of PX unit,sewage plant and the ambient air in the factory. Emission characteristics such as concentration level of VOCs and source profiles are investigated. In combination with PCA result,the particular pollutants of emission sources are selected. The ozone formation potential of emission sources is studied with the maximum incremental method（ MIR）. The results indicate that the emission concentration of four stationary sources is 32- 95 mg / m^3 in the petrochemical factory,and the concentration of ambient air is about 1. 5 mg / m^3. There are 21 kinds of VOCs quantitatively detected and the emission characteristics of stationary sources are closely related to the process. In addition,the results show that aromatic hydrocarbons are the primary photochemical pollutants,mainly including toluene and benzene.

关 键 词：挥发性有机物 石化企业 排放特征 主成分分析 光化学污染潜势 

分 类 号：X511[环境科学与工程—环境工程]