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Effects of Assistant Solvents and Mixing Intensity on the Bromination Process of Butyl Rubber
  • ISSN号:1004-9541
  • 期刊名称:Chinese Journal of Chemical Engineering
  • 时间:2014.4
  • 页码:398-404
  • 分类:TQ051.7[化学工程] TQ614.9[化学工程—精细化工]
  • 作者机构:[1]Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China, [2]State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
  • 相关基金:Supported by the National Natural Science Foundation of China (21176014, 20990221, 21121064) and the Science-Technology Project for Supervisors of Excellent Doctor Degree Thesis of Beijing (20111001001).
  • 相关项目:反应过程强化
中文摘要:

丁基橡胶(IIR ) 的一个慢 bromination 过程受不了低效率和目标产品的低选择(S) 。为了获得合适的途径在 bromination 过程上加强这个过程,助理溶剂的效果和混合紧张,全身地在这份报纸被学习。反应过程被发现常常与助理溶剂的增加的剂量和极性加速了。有 30% 的己(由体积) dichloromethane 作为合适的溶剂部件被发现,在转指向 80.2% 的产品(xA1s ) 和 91.2% 的相应 S 的 1,4 异戌二烯的稳定的变换在 5 min 被获得的地方。加速的反应过程被示威被混合紧张直到 1100 r 的最佳的激动人心的率显著地影响

英文摘要:

A slow bromination process of butyl rubber (IIR) suffers from low efficiency and low selectivity (S) of target-product. To obtain suitable approach to intensify the process, effects of assistant solvents and mixing inten-sity on the bromination process were systemically studied in this paper. The reaction process was found constantly accelerated with the increasing dosage and polarity of assistant solvent. Hexane with 30%(by volume) dichloro-methane was found as the suitable solvent component, where the stable conversion of 1,4-isoprene transferring to target product (xA1s) of 80.2%and the corresponding S of 91.2%were obtained in 5 min. The accelerated reaction process was demonstrated being remarkably affected by mixing intensity until the optimal stirring rate of 1100 r·min-1 in a stirred tank reactor. With better mixing condition, a further intensification of the process was achieved in a ro-tating packed bed (RPB) reactor, where xA1s of 82.6% and S of 91.9% were obtained in 2 min. The usage of the suitable solvent component and RPB has potential application in the industrial bromination process intensification.

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期刊信息
  • 《中国化学工程学报:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国化学工业与化学工程学会
  • 主编:
  • 地址:北京东城区青年湖路13号
  • 邮编:100011
  • 邮箱:cjche@cip.com.cn
  • 电话:010-64519487/88
  • 国际标准刊号:ISSN:1004-9541
  • 国内统一刊号:ISSN:11-3270/TQ
  • 邮发代号:
  • 获奖情况:
  • 1998年化工系统优秀信息成果一等奖,中国期刊方阵“双效”期刊
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  • 被引量:385