中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (1): 104-109.doi: 10.16265/j.cnki.issn1003-3033.2017.01.019

• 安全工程技术科学 • 上一篇    下一篇

醋酸乙烯聚合体系热失控风险评估及失控抑制

金满平1 工程师, 朱云峰1 工程师, 张婧2 工程师, 孙峰1 高级工程师, 徐伟1 教授级高工, 石宁1 教授级高工   

  1. 1 中国石化安全工程研究院 化工过程安全研究所,山东 青岛 266071
    2 化学品安全控制国家重点实验室,山东 青岛 266071
  • 收稿日期:2016-11-01 修回日期:2016-12-21 发布日期:2020-11-23
  • 作者简介:金满平 (1981—),男,山东青岛人,硕士,工程师,从事化工过程安全、化学品安全研究。E-mail:jinmp.qday@sinopec.com。

Risk assessment and inhibition of thermal runaway in vinyl acetate polymerization system

JIN Manping1, ZHU Yunfeng1, ZHANG Jing2, SUN Feng1, XU Wei1, SHI Ning1   

  1. 1 Institute of Chemical Process Safety, SINOPEC Research Institute of Safety Engineering, Qingdao Shandong 266071, China
    2 State Key Laboratory of Safety and Control for Chemicals, Qingdao Shandong 266071, China
  • Received:2016-11-01 Revised:2016-12-21 Published:2020-11-23

摘要: 为实现对醋酸乙烯(VAC)聚合反应热失控行为的风险评估及紧急抑制,采用VSP2绝热量热仪对醋酸乙烯聚合反应体系在不同危险场景条件下的热失控过程和失控抑制进行试验模拟。依据苏黎世危险性分析法(ZHA)中的失控反应严重度评估判据,评估醋酸乙烯聚合反应的热失控风险程度,提出紧急情况下抑制剂的加入时间及加入量。结果表明,醋酸乙烯聚合反应失控后绝热温升(ΔTad)超过100 ℃,最大反应速率到达时间(TMRad)约为10 min,其热失控风险程度仅次于不可接受水平。聚合体系温度不高于73 ℃时,通过加入不低于参与聚合反应的醋酸乙烯质量20%的常温溶剂,可有效阻止失控反应发生。

关键词: 醋酸乙烯(VAC), 聚合体系, 热失控, 风险评估, 绝热温升(ΔTad), 最大反应速率到达时间(TMRad)

Abstract: In order to evaluate the thermal runaway risk of the VAC polymerization system and to develop an emergency inhibition methodology, an experimental study was made by using an adiabatic calorimeter VSP2. The associated runaway risk was evaluated and the proper adding time and amount of the inhibitor were determined based on the ZHA hazard analysis method. The results show that the risk is second to the most dangerous, the ΔTad is over 100 ℃,and TMRad is around 10 min, and that the runaway could be effectively suppressed by the addition of solvent (no less than 20% VAC in mass) when the system temperature is below 73 ℃.

Key words: vinyl acetate(VAC), polymerization system, thermal runaway, risk assessment, adiabatic temperature rise(ΔTad), time to maximum rate under adiabatic condition(TMRad)

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