四氟乙烯生产用双戊烯的深度脱水技术研究  

Study on the Deep Dehydration Technique of Dipentene

作　　者：罗源军[1] LUO Yuanjun(Zhonghao Chenguang Research Institute of chemical Industry,Organic-FluorineMaterial Key Laboratory of Sichuan Province,Zigong,Sichuan 643201)

机构地区：[1]中昊晨光化工研究院有限公司,有机氟材料四川省重点实验室

出　　处：《化工生产与技术》2019年第2期1-3,I0002,共4页Chemical Production and Technology

摘　　要：以4A分子筛为干燥剂,对水的质量分数10^-3~1.5×10^-3的双戊烯采用静态浸泡法进行液相深度脱水,以满足四氟乙烯生产过程中对于阻聚剂含水量的使用要求。结果表明,分子筛的干燥效果要明显好于硅胶吸附与化学吸收;为保证脱水效果,活化后的分子筛只能使用1次,在优化干燥时间4h并优选二级吸附工艺(二次干燥)的条件下,可以确保双戊烯的中水的质量分数在0.2×10^-3以下;且吸附过的分子筛可以通过简单的再生处理而被重复使用,具有很好的应用前景。In order to satisfy the requirement of polymerization inhibitor in the tetrafluoroethylene production,a liquid phase deep dehydration technique was used for dipentene (mass fraction of water is about 1.0 × 10^- 3~1.5 × 10^- 3) with 4A molecular sieve as desiccant by a static immersion method. The results showed that drying effect of 4A molecular sieve was better than that of silica gel and chemisorption. In order to ensure drying effect, the activated molecular sieve was used only once. In the condition of optimal dehydrated time was 4 h and secondary dehydration technology was profitable,this could make sure that mass fraction of water of dipentene is about 0.2×10^- 3 or lower. what is more, the employed molecular sieve could be used repeatedly by simple recovery process, therefore it have good application prospects.

关 键 词：双戊烯 深度脱水 4A分子筛 四氟乙烯 

分 类 号：TQ222.42[化学工程—有机化工]