石油化工设计 ›› 2020, Vol. 37 ›› Issue (2): 11-15.doi: 10.3969 /j.issn.1005-8168.2020.02.003

• 设计技术 • 上一篇    下一篇

EBHP分解飞温模型建立及控制分析

耿强,傅 睿,徐晓敏,张建华   

  1. 中国石化工程建设有限公司,北京 100101
  • 收稿日期:2020-03-10 接受日期:2020-03-10 出版日期:2020-05-25 发布日期:2020-05-25
  • 通讯作者: 耿强,gengqiang@sei.com.cn E-mail:gengqiang@sei.com.cn
  • 作者简介:耿强,男,2014年毕业于中国石油大学(华东)化学工程与技术专业,工程师,主要从事C3-C5装置的设计开发工作。联系电话:010-84877749;E-mail: gengqiang@sei.com.cn

Construction of Temperature Runaway Model for EBHP Decomposition Reaction and the Control Analysis

Geng Qiang, Fu Rui, Xu Xiaomin, Zhang Jianhua   

  1. SINOPEC Engineering Incorporation, Beijing, 100101
  • Received:2020-03-10 Accepted:2020-03-10 Online:2020-05-25 Published:2020-05-25
  • Contact: Geng Qiang,gengqiang@sei.com.cn E-mail:gengqiang@sei.com.cn

摘要: 对乙苯过氧化氢(EBHP)分解构建了飞温模型,绘制有冷却和无冷却体系两种工况的飞温曲线,分析了乙苯注入、紧急冷却水通入措施对飞温的抑制作用。工艺模拟试验结果表明:该EBHP飞温模型能较好预测温度随时间的变化情况,认定120 ℃为系统报警温度值,140 ℃为系统联锁值。以某63/30万t/a的苯乙烯/环氧丙烷(SMPO)装置为例,假定EBHP进料量为1 000 t/h,用EBHP飞温模型核算,乙苯注入量(w)为30%的进料量时、或者紧急冷却水通入量(w)为进料量的6.5%时,系统均能快速终止飞温,且效果明显。这一研究结果为装置的安全设计和稳定运行提供了依据

关键词: 乙苯过氧化氢分解, 反应飞温, 模型构建, 控制方案

Abstract: Temperature runaway model was built for EBHP decomposition, and temperature runaway curves were drawn for two working conditions, i.e., with or without cooling system. The inhibiting effect of EB flush and emergency cooling water quench on temperature runaway was analyzed. The results showed that the EBHP temperature runaway model could predict the change of temperature with time. The temperature alarm value was 120℃ and the interlock temperature was 140℃. A 630/300 kt/a SM/PO unit was taken as the example, and the EBHP flow rate was assumed to be 1000 t/h. The temperature runaway could be inhibited rapidly and effectively when the EB flow rate was equal to 30% of the feed or the emergency cooling water flow rate was equal to 6.5% of the feed. This research has provided basis and reference for the safety design and stable operation of the unit.

Key words: ethylbenzene hydrogen peroxide/EBHP, EBHP decomposition, reaction temperature runaway, model building, control plan