化工学报 ›› 2022, Vol. 73 ›› Issue (6): 2742-2747.doi: 10.11949/0438-1157.20220467

• 材料化学工程与纳米技术 • 上一篇    下一篇

气液法流化床乙烯云聚合工艺开发及产品高性能化

范小强1(),黄正梁1,2,孙婧元1,2(),王靖岱1,3,王晓飞4,胡晓波5,韩国栋4,阳永荣1,3,吴文清4   

  1. 1.浙江大学化学工程与生物工程学院，浙江 杭州 310027
    2.浙江省化工高效制造技术重点实验室，浙江 杭州 310027
    3.化学工程联合国家重点实验室（浙江大学），浙江 杭州 310027
    4.中国石化天津石化分公司，天津 300271
    5.杭州福斯特应用材料股份有限公司，浙江 杭州 311300
  • 收稿日期:2022-03-31 修回日期:2022-05-31 出版日期:2022-06-05 发布日期:2022-06-30
  • 通讯作者: 孙婧元 E-mail:orionfxq@126.com;sunjy@zju.edu.cn
  • 作者简介:范小强（1991—），男，博士，助理研究员，orionfxq@126.com
  • 基金资助:
    国家自然科学基金项目(22178304);国家自然科学基金创新研究群体科学基金项目(61621002)

Development of cloudy gas-liquid fluidized bed ethylene polymerization process and high performance products

Xiaoqiang FAN1(),Zhengliang HUANG1,2,Jingyuan SUN1,2(),Jingdai WANG1,3,Xiaofei WANG4,Xiaobo HU5,Guodong HAN4,Yongrong YANG1,3,Wenqing WU4   

  1. 1.College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
    2.Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Hangzhou 310027, Zhejiang, China
    3.State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
    4.SINOPEC Tianjin Company, Tianjin 300271, China
    5.Hangzhou First Applied Material Co. , Ltd. , Hangzhou 311300, Zhejiang, China
  • Received:2022-03-31 Revised:2022-05-31 Published:2022-06-05 Online:2022-06-30
  • Contact: Jingyuan SUN E-mail:orionfxq@126.com;sunjy@zju.edu.cn

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摘要：

随着国内聚烯烃产量的不断增加，聚烯烃通用料市场竞争加剧，开发新型高性能聚烯烃产品至关重要。针对气液法流化床乙烯云聚合工艺的构建以及聚乙烯产品高性能化，在气液法流化床所包含的典型介尺度结构实验和理论研究基础上，明确聚合反应条件，优化气液法流化床进料系统，最终应用于气液法流化床乙烯云聚合工艺的开发。通过对工业试验产品的分子链结构的表征分析，证明云聚合工艺是生产高性能聚乙烯产品的全新成功途径。

关键词: 流化床, 多相流, 聚合, 竞争协调机制, 聚乙烯微观结构, 工业试验

Abstract:

With the continuous increase of domestic polyolefin production, the competition in the polyolefin general material market has intensified, and it is very important to develop new high-performance polyolefin products. Aiming at the construction of the cloudy gas-liquid fluidized bed ethylene polymerization process and the development of high-performance polyethylene, the polymerization conditions were determined and the liquid feeding system was optimized on the basis of experiments and theoretical analysis of mesoscale structures in the gas-liquid fluidized bed. Furthermore, the cloudy gas-liquid fluidized bed polymerization process is developed and industrial tests were carried out. The molecular chain structure of the industrial products proved that the cloudy gas-liquid fluidized bed polymerization process is a novel and successful way to produce high-performance polyethylene products.

Key words: fluidized-bed, multiphase flow, polymerization, competition and coordination relationship, polyethylene microstructure, industrial tests

中图分类号: 

  • TQ 320.2

图1

云聚合工艺流程示意图"

表1

气相主体和液相中的H2/C2H4和C6H12/C2H4"

Item

PE1

Tianjin Petrochemical

PE2

Tianjin Petrochemical

G-L-SG-SG-L-SG-S
H2/C2H41.001.531.132.13
C6H12/C2H494.5013.3063.57.33

图2

工业试验结果"

表2

气相聚合工艺和云聚合工艺产品分析"

ProductProcessComonomerDensity/(g/cm3)Crystallinity/%
PE-Agas-phase polymerization1-butene (4.10%)0.91825.4
PE-Bcloudy polymerization1-butene+1-hexene (6.23%)0.91222.5

图3

PE-A和PE-B各级分的质量分数"

图4

PE-A和PE-B各级分的分子量"

图5

PE-A和PE-B的支链分布"

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