High-Pressure Polymerization of Ethylene in Tubular Reactors: A Rigorous Dynamic Model Able to Predict the Full Molecular Weight Distribution

被引：17

作者：

Asteasuain, Mariano ^{[1
]}

Brandolin, Adriana ^{[1
]}

机构：

[1] Univ Nacl Sur, CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina

来源：

MACROMOLECULAR REACTION ENGINEERING | 2009年 / 3卷 / 07期

关键词：

dynamic model; molecular weight distribution; polyethylene (PE); probability generating function; tubular reactor; LOW-DENSITY POLYETHYLENE; MATHEMATICAL-MODEL; PARAMETER-ESTIMATION; TRANSFORMED DOMAINS; OPTIMIZATION; OPERATION; RECOVERY; GPROMS; PLANT; LDPE;

D O I：

10.1002/mren.200900013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A rigorous dynamic model of the high-pressure polymerization of ethylene in tubular reactors is presented. The model is capable of predicting the full molecular weight distribution (MWD), average branching indexes, monomer conversion and average molecular weights as function of time and reactor length. The probability generating function method is applied to model the MWD. This technique allows easy and efficient calculation of the MWD, in spite of the complex mathematical description of the process. The reactor model is used to analyze the dynamic responses of MWD and other process variables under different transition policies, as well as to predict the effects of process perturbations. The influence of the material recycle on the process dynamics is also shown.

引用

页码：398 / 411

页数：14

共 28 条

[1] Design stage optimization of an industrial low-density polyethylene tubular reactor for multiple objectives using NSGA-II and its jumping gene adaptations [J].

Agrawal, Naveen ;

Rangaiah, G. P. ;

Ray, Ajay K. ;

Gupta, Santosh K. .

CHEMICAL ENGINEERING SCIENCE, 2007, 62 (09) :2346-2365

[2] Optimal operation of ethylene polymerization reactors for tailored molecular weight distribution [J].

Asteasuain, M. ;

Brandolin, A. .

JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 105 (05) :2621-2630

[3] Recovery of molecular weight distributions from transformed domains. Part I. Application of pgf to mass balances describing reactions involving free radicals [J].

Asteasuain, M ;

Sarmoria, C ;

Brandolin, A .

POLYMER, 2002, 43 (08) :2513-2527

[4] Peroxide modification of polyethylene. Prediction of molecular weight distributions by probability generating functions [J].

Asteasuain, M ;

Sarmoria, C ;

Brandolin, A .

POLYMER, 2002, 43 (08) :2363-2373

[5] Effect of multiple feedings in the operation of a high-pressure polymerization reactor for ethylene polymerization [J].

Asteasuain, M ;

Ugrin, PE ;

Lacunza, MH ;

Brandolin, A .

POLYMER REACTION ENGINEERING, 2001, 9 (03) :163-182

[6] Industrial high pressure ethylene polymerization initiated by peroxide mixtures: A reduced mathematical model for parameter adjustment [J].

Asteasuain, M ;

Pereda, S ;

Lacunza, MH ;

Ugrin, PE ;

Brandolin, A .

POLYMER ENGINEERING AND SCIENCE, 2001, 41 (05) :711-726

[7] Dynamic simulation and optimisation of tubular polymerisation reactors in gPROMS [J].

Asteasuain, M ;

Tonelli, SM ;

Brandolin, A ;

Bandoni, JA .

COMPUTERS & CHEMICAL ENGINEERING, 2001, 25 (4-6) :509-515

[8]

ASTEASUAIN M, 2003, THESIS U NACL SUR BA

[9] Modeling and optimization of a high-pressure ethylene polymerization reactor using gPROMS [J].

Asteasuain, Mariano ;

Brandolin, Adriana .

COMPUTERS & CHEMICAL ENGINEERING, 2008, 32 (03) :396-408

[10] High pressure polymerization of ethylene. An improved mathematical model for industrial tubular reactors [J].

Brandolin, A ;

Lacunza, MH ;

Ugrin, PE ;

Capiati, NJ .

POLYMER REACTION ENGINEERING, 1996, 4 (04) :193-241

← 1 2 3 →