典型工业无组织源VOCs排放特征

选取制药厂、酿酒厂和橡胶厂分析了不同工艺过程VOCs排放特征.结果表明,制药厂安乃近合成和氨基比林合成的VOCs排放以苯、甲苯和苯乙烯等苯系物为主,乙酰氨基酚合成的VOCs排放主要以C4～C6的烷烃为主,酿酒厂和橡胶厂VOCs排放均以甲苯、乙苯和间,对二甲苯为主.采用最大增量反应活性法对臭氧生成潜势进行分析,制药厂安乃近合成和氨基比林合成VOCs单位臭氧生成潜势以苯、甲苯等苯系物为主;乙酰氨基酚合成以顺-2-丁烯、甲苯和异戊烷为主;酿酒厂、橡胶厂以甲苯、乙苯、间,对二甲苯为主.同时采用阈稀释倍数对VOCs进行恶臭分析,制药厂和酒厂无组织排放VOCs恶臭污染程度较轻,橡胶厂的伸缩装置车间和硫化车间的无组织VOCs排放存在一定程度的恶臭污染.

Characteristics of VOCs emitted from typical industrial fugitive

The pharmaceutical factory, brewery and rubber factory were selected to measure the chemical characteristics of VOCs emissions from their different production processes. The results indicated that in the pharmaceutical factory, VOCs emitted from analgin synthesis and aminopyrine synthesis were mainly composed of benzene, toluene, styrene and other aromatics, and VOCs emitted from acetaminophen synthesis were mainly composed of C4-C6 alkanes. VOCs emitted from brewery and rubber factory were both characterized by toluene, ethylbenzene and p-xylene. Moreover, the maximum incremental reactivity method was applied to analysis the ozone formation potential of VOCs emissions from these factories. The dominant species for ozone formation were benzene, toluene and other aromatics for the analgin synthesis and aminopyrine synthesis in the pharmaceutical factory; c-2-Butene, toluene and isopentane for the acetaminophen synthesis in the pharmaceutical factory; toluene, ethylbenzene and m, p-xylene for the brewery and the rubber factory, respectively. The threshold of diluted multiples was also used to analysis the stench index of these VOCs emissions. The results showed that the odor pollution in the pharmaceutical and brewery was relatively slighter. However, the telescopic device and vulcanizing workshop in the rubber factory were influenced by a certain degree of odor pollution.