稀土异戊橡胶聚合工艺分析  

Working condition analysis of the first polymerization kettle in the production plant of isoprene rubber synthesized with rare earth catalyst

作　　者：刘姜[1] 田原[2] 王福民[1] 赵彦强[1] 杨俊峰[1] 张福民[1] 

机构地区：[1]中国石油吉林石化公司研究院,吉林吉林132021 [2]中国石油吉林石化公司丙烯腈厂,吉林吉林132021

出　　处：《弹性体》2014年第5期50-54,共5页China Elastomerics

基　　金：中国石油炼油化工新技术重大工业化试验项目(2008C-3709)

摘　　要：从稀土异戊二烯聚合反应动力学出发,以2万t/a异戊橡胶生产装置为例,对其聚合单元首釜进行热稳定性分析,发现缩短原料在第一聚合釜内的停留时间,能够降低第一聚合釜的转化率,可以有效地提高第一聚合釜的热稳定性;对不同形式的搅拌器对釜内物料的返混效果进行了比较,采用内外反向双螺带聚合釜,釜内温度梯度小,催化剂浓度和活性均匀,避免了局部温度和催化剂浓度过高;优化第一与第二聚合釜之间管线走向,可以在一定程度缓解首釜至二釜之间管线挂胶的情况。Based on the polymerization dynamics of isoprene rubber synthesized with rare earth catalyst,using20,000t/a isoprene rubber production plant as an example, the thermal stability of the first reactor of the polymerization unit was analyzed. It is possible to reduce the conversion of the first polymerization reactor through shortening the residence time of the reactants, which can effectively im- prove the thermal stability of the first reactor. The different stirrer forms were compared based on the back mixing effect. The reactor with the reverse double ribbon blender can achieve a small temperature gradient, homogeneous catalyst concentration and activity. It can avoid the local temperature or cata- lyst concentration is too high. Through optimizing pipelines between the first and second reactor, it is possible to alleviate the blocking between the two reactors to a certain extent.

关 键 词：聚合釜热稳定性 搅拌形式 釜间管线连接位置 

分 类 号：TQ333.3[化学工程—橡胶工业]