化工学报2012，Vol.63Issue(9)：2703-2709,7.DOI:10.3969/j.issn.0438-1157.2012.09.005
基于联立法的乙烯淤浆聚合牌号切换过程动态模拟
Dynamic simulation of grade transition for ethylene slurry polymerization process based on simultaneous approach
摘要
Abstract
Dynamic rigorous model including kinetics and thermodynamics is established for the ethylene slurry polymerization plant. Thermodynamic properties are estimated by Kriging technique with the maximum relative error less than 2%. Based on the equation oriented model, control and state variables are synchronously discretized using orthogonal collocation finite elements (OCFE) method to develop simultaneous dynamic simulation for grade transition operations. The results are validated by comparing steady state data of five different grades obtained by Aspen Plus. The dynamic grade transition based on average molecular weight is also presented, which is close to that in Aspen Dynamic.关键词
乙烯淤浆聚合/联立法/牌号切换Key words
ethylene slurry polymerization/ simultaneous approach/ grade transition分类
化学化工引用本文复制引用
刘蒙蒙,占志良,邵之江,陈曦,顾雪萍..基于联立法的乙烯淤浆聚合牌号切换过程动态模拟[J].化工学报,2012,63(9):2703-2709,7.基金项目
国家重点基础研究发展计划项目(2012CB720503) （2012CB720503）
国家自然科学基金项目(61074148) （61074148）
国家高技术研究发展计划项目(2012AA040305) （2012AA040305）
中央高校基本科研业务费专项资金. （）
