化工进展 ›› 2023, Vol. 42 ›› Issue (11): 5585-5591.DOI: 10.16085/j.issn.1000-6613.2022-2234

• 化工过程与装备 •    下一篇

氯化溴的微反应连续合成与应用

王德强1(), 李金忠2, 王凯3(), 骆广生3   

  1. 1.潍坊科技学院,山东半岛卤水资源高值化绿色化综合利用工程技术研发中心,山东 潍坊 262700
    2.山东旭锐新材股份有限公司,山东 潍坊 262700
    3.清华大学化工系,化学工程联合国家重点实验室,北京 100084
  • 收稿日期:2022-12-01 修回日期:2023-04-21 出版日期:2023-11-20 发布日期:2023-12-15
  • 通讯作者: 王凯
  • 作者简介:王德强(1973—),男,博士,讲师,研究方向为有机合成。E-mail:ciacwdq@163.com
  • 基金资助:
    国家自然科学基金(21991104);山东省重点研发计划(重大科技创新工程)(2020CXGC011206)

Microreaction continuous synthesis and application of bromine chloride

WANG Deqiang1(), LI Jinzhong2, WANG Kai3(), LUO Guangsheng3   

  1. 1.Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, WeiFang University of Science and Technology, Weifang 262700, Shandong, China
    2.Shandong Sunris New Materials Co. , Ltd. , Weifang 262700, Shandong, China
    3.Department of Chemical Engineering, the State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2022-12-01 Revised:2023-04-21 Online:2023-11-20 Published:2023-12-15
  • Contact: WANG Kai

摘要:

氯化溴是工业上重要的卤化试剂,其合成过程具有放热量大、生产效率低、存在安全隐患重等问题,生产装备的连续化和小型化是氯化溴合成技术的重要发展方向。本文针对通过溴素的二氯甲烷溶液吸收氯气制备氯化溴的微反应技术开发,考察了康宁G1反应器、金德C1反应器和自制的微混合器+微填充床反应器的传质性能,实现了氯化溴的连续稳定制备,反应器的时空收率达到2.25g/(min∙mL)。利用微反应器所制得的氯化溴实施聚苯乙烯的溴化反应,取得了溴质量分数>66%和5%热失重温度>370℃的溴化聚苯乙烯产品。

关键词: 氯化溴, 微反应器, 连续合成, 溴化聚苯乙烯

Abstract:

Bromine chloride is an important halogenating reagent in industry. Its synthesis has many challenges such as high heat release, low production efficiency and serious potential safety hazards. The continuity and miniaturization of producing equipment is an important development direction of bromine chloride synthesis technology. To develop microreaction technology for preparing bromine chloride via absorbing chlorine by means of dichloromethane solution of bromine, the mass transfer performances of Corning G1 reactor, Jinde C1 reactor and self-made micromixer + micro packed reactor were investigated. Continuous and stable preparation of bromine chloride was realized and the space-time yield of the microreactors reached 2.25g/(min∙mL). Bromination of polystyrene was implemented using the bromine chloride prepared from microreactors, and brominated polystyrene products with mass percentage >66% bromine content and 5% thermogravimetric temperature >370℃ were obtained.

Key words: bromine chloride, microreactor, continuous synthesis, brominated polystyrene

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