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J4  2013, Vol. 47 Issue (10): 1883-1888    DOI: 10.3785/j.issn.1008-973X.2013.10.027
环境与化学工程     
管式反应器中LDPE相对分子质量分布的模拟
童国红,张雷鸣, 阳永荣, 蒋斌波
浙江大学 化学工程与生物工程学系 化学工程联合国家重点实验室,浙江 杭州 310027
Simulation on relative molecular mass distribution of LDPE tubular reactor
TONG Guo-hong, ZHANG Lei-ming, YANG Yong-rong, JIANG Bin-bo
State Key Laboratory of Chemical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
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摘要:

采用Monte Carlo随机法对管式反应器中LDPE相对分子质量分布进行模拟,通过模拟值与GPC实测值的对比验证模拟的可靠性.考察引发剂种类及调聚剂加入量对相对分子质量分布的影响.不同引发剂由于半衰期不同,能够产生具有不同相对分子质量分布的LDPE产品|丙烯分子浓度的变化仅影响相对分子质量分布曲线的峰值位置,对峰的高度和形状无明显的影响.模拟LDPE相对分子质量分布沿整个管式反应器管程方向的变化.结果表明,通过调节引发剂注入配比和相应的引发温度可以调控聚乙烯产品的相对分子质量分布.

Abstract:

Simulation of the relative molecular mass distribution of LDPE in tubular reactor was conducted by Monte Carlo stochastic numerical method, and the accuracy of simulation was proved by comparison of simulation result and GPC data. The influence of initiator species and chain transfer agent concentrations on relative molecular mass distribution of LDPE was investigated. Different initiators could form the LDPE with different relative molecular mass distribution for the different half-life time; different molecular concentrations of propylene which served as chain transfer agent only had influence on the peak position of relative molecular mass distribution curve but no influence on the shape of the curve. The simulation also predicted the relative molecular mass distribution of LDPE along the direction of tubular reactor. The simulation with Monte Carlo stochastic numerical method can be employed as soft sensor for industrial production; therefore, it has significant value in industrial production.

出版日期: 2013-10-01
:  TQ 325.1  
基金资助:

国家自然科学基金资助项目(21176208).

通讯作者: 蒋斌波,男,副教授.     E-mail: jiangbb@zju.edu.cn
作者简介: 童国红(1988—),女,硕士生,从事烯烃聚合的研究.E-mail: tongguohong_1988@163.com
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引用本文:

童国红,张雷鸣, 阳永荣, 蒋斌波. 管式反应器中LDPE相对分子质量分布的模拟[J]. J4, 2013, 47(10): 1883-1888.

TONG Guo-hong, ZHANG Lei-ming, YANG Yong-rong, JIANG Bin-bo. Simulation on relative molecular mass distribution of LDPE tubular reactor. J4, 2013, 47(10): 1883-1888.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2013.10.027        http://www.zjujournals.com/eng/CN/Y2013/V47/I10/1883

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[1] 张雷鸣,王靖岱,阳永荣. 高压法聚乙烯管式反应器的数学模拟[J]. J4, 2011, 45(3): 551-556.
[2] 陈美娟, 陈杰勋, 王靖岱, 蒋斌波, 阳永荣. 聚乙烯密度的拉曼光谱检测[J]. J4, 2010, 44(6): 1164-1168.