Unipol气相聚乙烯反应器结块问题研究进展  

Progress in investigation of agglomeration in Unipol PE gas-phase reactor

作　　者：郭晓东 孟光敏 王瑞壮 俞越 刘文星 边宇飞 于佩潜 Guo Xiaodong;Meng Guangmin;Wang Ruizhuang;Yu Yue;Liu Wenxing;Bian Yufei;Yu Peiqian(National Institute of Clean-and-Low-Carbon Energy,CHN,Beijing 102209,China;CHN Energy Xinjiang Chemical Co.,Ltd.,Urumqi 831404,China;CHN Energy Baotou Coal Chemical Co.,Ltd.,Baotou 014010,China)

机构地区：[1]北京低碳清洁能源研究院,北京102209 [2]国能新疆化工有限公司,新疆乌鲁木齐831404 [3]国能包头煤化工有限责任公司,内蒙古包头014010

出　　处：《合成树脂及塑料》2022年第5期68-73,共6页China Synthetic Resin and Plastics

基　　金：国家能源集团公司资助项目(KJ9300000218)。

摘　　要：对Unipol工艺气相流化床聚乙烯反应器生产运行过程中生成的块料形态和特征进行了分类与总结;对反应器结块现象、结块原因、结块部位及防结块措施研究进展进行了归纳。结果表明:结块的原因为静电因素、反应器设计因素、工艺条件控制因素和物料性质因素。实际生产运行过程中,严格落实与各种影响因素相对应的防结块措施,能从一定程度上缓解结块现象,但不能彻底消除结块。建议从控制原料质量、优化防结块控制条件和深入研究聚合反应动力学三个方面同时着手,探究结块本质原因和开发抑制结块技术。Agglomeration formed during production of polyethylene in Unipol gas phase fluidized reactor are categorized into different types based on their shapes.The causes as well as the locations where the agglomeration occurs are examined,which cover static electricity,design for reactor,conditions control,and material properties.Measures for preventing the agglomeration from happening are discussed,while in practice it is impossible to eliminate the phenomena.The causes and technologies for eliminating the agglomeration formation are explored from quality control of feed stock,optimization of process conditions and research of polymerization dynamics.

关 键 词：聚乙烯 流化床 反应器 结块 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]