尾气中氯甲烷深度回收方法的比较  

Comparison of the Recovery Processes for CH3Cl in the Vent Gas

作　　者：康志鹏[1] 李保军[1] 贺高红[1] 阮雪华[1] 于长福[1] 种道师[1] 

机构地区：[1]精细化工国家重点实验室膜科学与技术研究开发中心大连理工大学化工学院,辽宁大连116024

出　　处：《石油化工》2011年第11期1220-1224,共5页Petrochemical Technology

基　　金：教育部新世纪优秀人才计划项目(NCET-06-0272)

摘　　要：针对有机硅生产排放尾气中氯甲烷含量过高的问题,在工厂原回收工艺流程的基础上分别采用冷凝法、膜分离法和吸收法对排放尾气中的氯甲烷进行深度回收处理。以有机硅生产产生的氯甲烷质量分数为27.0%的尾气为设计基础,应用UniSim Design模拟软件对3种改造方案进行模拟分析。模拟结果表明,经过3种改造方案处理后排放尾气中氯甲烷质量分数分别降至6.2%,6.1%,4.3%,经济效益分别增加270,283,237万元/a。比较3种改造方案的经济效益可知,膜分离法工艺可在低投资、低消耗的前提下获得最高的经济效益增长,更符合工厂处理氯甲烷尾气的实际需要。The recovery processes for CH3Cl in the vent gas from organosilicon production were studied.Three methods for the CH3Cl recovery,namely condensation method,membrane separation method and absorption method,were proposed based on the original process.By using UniSim Design simulation software,these three processes were simulated.The results showed that,after being treated through the three designed processes,the mass fraction of CH3Cl in the vent gas were reduced from 27.0% to 6.2%,6.1% and 4.3% respectively,and the benefits increased by 270×104,283×104 and 237×104 yuan/a,respectively.

关 键 词：氯甲烷 尾气回收 冷凝法 膜分离法 吸收法 UniSim Design模拟软件 有机硅 

分 类 号：TQ208[化学工程—有机化工]