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论文编号:HG087 论文字数:9359,页数:27
摘 要:随着有机合成和石油化工行业的迅猛发展,工业有机废气的排放量不断增加,进入大气的有机化合物种类也越来越多,大气污染日趋严重。二氯甲烷是一种挥发性卤代烃污染物,对人体有致癌作用,是全球最为重要的气态有机污染物之一,因此,回收二氯甲烷已成为一个迫在眉睫的课题。
本文测定了二氯甲烷在吸收剂中亨利系数以及吸收效果,计算了流程方案的设备参数。根据吸收实验数据和平衡实验数据,提出了一种较为合理的治理流程。实验测得亨利系数H为1.33,相平衡常数m为1.8 x10-3平均吸收效率达到了92.67%
关键词:二氯甲烷 ;吸收剂 ; 有机废气 ;吸收 ;气液平衡
Study on the Clean Recycling Technology of Dichloromethane
Abstract: With the rapid development of organic synthesis and petrochemical industry, and the emissions of industrial organic waste gas is continujava script:void(0)e to increaing, types of organic compounds that entering the atmosphere become more and more ,and the air pollution is turn to serious day by day. Methylene Chloride is a volatile halocarbons pollutants ,and are carcinogenic to humans, is one of the world''''s most important gaseous organic pollutants, therefore, recovery dichloromethane has become a pressing issue. This article has mensurates the Henry coefficient and the effection of absorb in absorbent of dichloromethane , and calculated the equipment parameters of flow scheme . According to the experimental data of absorbing and balancing ,bring forward a more reasonable treatment processes. Measured Henry coefficient of 1.33 for H, equilibrium constant m of 1.8 x10-3 absorption efficiency reached 92.67% in an average.
Keywords:Dichloromethane ;Absorbent;Organic emissions ;Absorption;Gas-liquid balance
目录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
1.1 概述 1
1.1.1二氯甲烷对人类的危害 2
1.1.2二氯甲烷的来源 2
1.2 二氯甲烷的国内外市场及发展趋势 2
1.3 二氯甲烷的回收方法 5
1.4本文的工作 6
2. 实验部分 7
2.1 实验目的 7
2.2实验原理 7
2.3 仪器与试剂 8
2.4 实验方法与步骤 8
2.5用测定气液两相浓度的方法测定二氯甲烷在吸收剂中的亨利系数 8
2.6.吸收试验 8
3. 结果与讨论 10
3.1 测定二氯甲烷在吸收剂中的亨利系数实验数据预处理 10
3.2吸收剂吸收二氯甲烷的实验数据处理 11
3.3典型工艺流程概述 11
3.4二氯甲烷的回收工艺设计计算 12
4.总结与展望 17
致谢 18
参考文献 19
附图 21