丁二烯聚合放热危险特性和安全泄放面积计算  

Polymerization exothermic dangerous characteristic analysis and safety relief area calculation for butadiene

作　　者：金满平[1] 张帆[2] 孙峰[1] 张晨[1] 徐伟[1] 石宁[1] 

机构地区：[1]中国石化青岛安全工程研究院 [2]青岛科技大学化工学院,山东青岛266044

出　　处：《中国安全科学学报》2015年第1期133-138,共6页China Safety Science Journal

基　　金："十二五"国家科技支撑计划(2012BAK13B02)

摘　　要：为探讨丁二烯的聚合放热危险特性,并为某化工厂丁二烯储罐安全泄放设计提供依据,利用新型绝热量热仪VSP2,对丁二烯的聚合放热过程及加有阻聚剂对叔丁基邻苯二酚(TBC)的丁二烯的聚合放热过程进行试验研究,得到温度、压力随时间变化的数据。用Leung法和平衡速率模型(ERM),分别计算得到该厂丁二烯储罐的安全泄放流量和泄放能力,并最终确定其安全泄放面积。结果表明:丁二烯聚合反应的起始放热温度为70.26℃,反应失控后体系的最高温度和最高压力分别达到194.07℃和1.06 MPa,具有较大的危险性;阻聚剂TBC能有效阻止丁二烯的聚合;丁二烯聚合反应的泄放类型为蒸气型泄放,计算得到该化工厂丁二烯储罐的安全泄放面积为0.06 m2。In order to examine the polymerization exothermic dangerous characteristic of butadiene and provide a basis for designing the relief system of butadiene tanks in a certain chemical plant,Experiments were carried out by using the new heat insulation meter VSP2（ vent sizing package 2）,on the polymerization exothermic process of butadiene and that of butadiene with inhibitor TBC. Data on temperature and pressure as functions of time were obtained. Leung method and ERM were used for calculating safety relief flow rate and relief capacity,finally calculating the safety relief area of butadiene tank. The results show that butadiene polymerization exothermic reaction onset temperature is 70. 26 ℃,the highest temperature and pressure of reaction system is 194. 07 ℃ and 1. 06 MPa,so the reaction poses a big risk to the environment,that the inhibitor TBC can inhibite effectively the polymerization reaction of butadiene,and that the relief area of butadiene tanks should be 0. 06 m^2.

关 键 词：丁二烯 聚合 对叔丁基邻苯二酚(TBC) 平衡速率模型(ERM) 泄放面积 两相流 

分 类 号：X937[环境科学与工程—安全科学]