Safety-control conditions of gas phase in 3-chloropropene epoxidation reactor

JIANG Jie; XIE Chuanxin; WANG Zhengang; ZHANG Chen

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Safety-control conditions of gas phase in 3-chloropropene epoxidation reactor

更新时间：2025-12-10

- Safety-control conditions of gas phase in 3-chloropropene epoxidation reactor
- CIESC Journal Issue 2, Pages: 330-335(2010)
- 作者机构：
  
  1. 中国石油化工股份有限公司青岛安全工程研究院
  2. 化学品安全控制国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 February 2010，
  
  Published：05 February 2010
- 稿件说明：
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JIANG Jie, XIE Chuanxin, WANG Zhengang, et al. Safety-control conditions of gas phase in 3-chloropropene epoxidation reactor[J]. CIESC Journal, 2010, (2): 330-335.
DOI：

JIANG Jie, XIE Chuanxin, WANG Zhengang, et al. Safety-control conditions of gas phase in 3-chloropropene epoxidation reactor[J]. CIESC Journal, 2010, (2): 330-335. DOI：

摘要

在相转移法氯丙烯环氧化反应过程中，由于少量双氧水发生无效分解生成氧气，导致反应器气相存在燃爆危险性。测试了工况条件下氯丙烯-氧-氮三元体系的燃爆特性，得出该体系的极限氧浓度值（LOC）为10.9%;考察了主要因素对气相氧浓度的影响。研究发现，要降低气相氧浓度，应尽可能降低催化剂用量，适当提高搅拌速度，严格控制H2O2用量;应在液相沸腾后开始H2O2进料，并控制反应初始阶段的H2O2进料量，以避免瞬间H2O2进料过快。

Abstract

Decomposition of a fraction of hydrogen peroxide to oxygen during epoxidation of 3-chloropropene to epichlorohydrin results in explosion hazards in the gas phase of the reactor.Explosion datus of 3-chloropropene/oxygen/nitrogen mixtures was measured

and the limiting oxygen concentration (LOC) of the mixture was determined as 10.9%.Furthermore

the effect of the reaction conditions on oxygen concentration in the gas phase was investigated.The results showed that in order to reduce oxygen concentration in the gas phase

catalyst quantity should be reduced as low as possible

and stirring velocity should be increased properly

and H2O2 quantity should be controlled strictly.Moreover

H2O2 should be fed in batches after the liquid phase boils

and the feeding quantity of H2O2 in the initial stage of the reaction should be kept at a low level

which would avoid feeding H2O2 instantaneously or suddenly.

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