摘要
由于香精香料企业的特殊性,使用的原辅材料涉及恶臭挥发性有机物的数量众多,导致该行业排放的废气成分复杂且异味明显,为了解香精香料制造业恶臭排放特征及恶臭污染产生原因,以6家香精香料企业为分析对象,采集各家恶臭源的主要工艺流程中通过有组织方式排放的恶臭废气,分析其污染源的恶臭VOCs排放特征,测定了感官臭气浓度,应用理论臭气浓度法确定了各排放源的特征恶臭物质.结果表明:共检测出97种挥发性有机物,不同企业排放的物质种类接近但含量差异较大,主要排放物质种类为含氧有机物、芳香烃、卤代烃.甲苯在3家香料企业的废气中质量分数占比都比较高,乙醇是香精香料企业废气中的主要排放物质之一.6家恶臭源排放的废气都具有较强的感官刺激性,其中2#香料企业感官刺激最为严重,该香料企业主要以生产杂环香料为主.根据理论臭气浓度值,初步识别导致该行业的关键恶臭特征物质为:酯类(乙酸乙酯)、芳香烃(甲苯和苯)、醇类(乙醇和异丁醇)、醛类(C9及以下醛)及硫化物(甲硫醚和甲硫醇).
Due to the particularity of the fragrance and flavor industry, the raw and auxiliary materials used involve a large number of malodorous volatile organic compounds, resulting in complex exhaust gas components and obvious odors emitted by the industry. To understand the odor emission characteristics and the causes of odor pollution of the fragrance and flavor industry, samples were collected in each exhaust gas from 6 fragrance and flavor industries. The emission characteristics of odorous VOCs and the sensory odor concentration were measured. Based on the field date, the mainly causing odor compounds were identified. The results showed that a total of 97 volatile organic compounds were detected. The substances emitted from 6 sources were close but the content varies greatly. The main types of emitted substances were oxygen-containing organic compounds, aromatic hydrocarbons and halogenated hydrocarbons. Toluene had a relatively high mass fraction in three fragrance industries. Ethanol was one of the main substances in 6 sources. Exhaust gases emitted from the six sources had strong sensory irritation. The No. 2 fragrance source had the most serious irritation which mainly produces heterocyclic spices. According to the theoretical odor concentration value, esters(ethyl acetate), aromatic hydrocarbons(toluene and benzene), alcohols(ethanol and isobutanol), aldehydes(C9 and below aldehydes) and sulfides(methyl sulfide and methyl mercaptan) were preliminarily identified as characteristic odorous compounds of fragrance and flavor industry.
作者
杨伟华
肖咸德
王亘
孟洁
翟增秀
李佳音
YANG Weihua;XIAO Xiande;WANG Gen;MENG Jie;ZHAI Zengxiu;LI Jiayin(Tianjin Academy of Ecological and Environmental Sciences,State Environmental Protection Key Laboratory of Odor Pollution Control,Tianjin,300191,China;Tianjin Sinodour Environmental Protection Science and Technology Development Co.,Ltd.,Tianjin,300191,China)
出处
《环境化学》
CAS
CSCD
北大核心
2021年第4期1071-1077,共7页
Environmental Chemistry
基金
国家重点研发计划项目(2016YFC0700603-003)
国家自然科学基金(21577096)资助。
关键词
香精香料
恶臭污染
排放特征
特征恶臭物质
臭气浓度
fragrance and flavor
odor pollution
emission characteristics
odorous substances
odor concentration
作者简介
通讯联系人:王亘,Tel:022-87671627,E-mail:54255204@qq.com。
