A CFD–PBM coupled model of hydrodynamics and mixing/segregation in an industrial gas-phase polymerization reactor

2015 ◽  
Vol 96 ◽  
pp. 103-120 ◽  
Author(s):  
Vahid Akbari ◽  
Tohid Nejad Ghaffar Borhani ◽  
Ahmad Shamiri ◽  
Mohd. Kamaruddin Abd. Hamid
Keyword(s):  
Gas Phase ◽  
Coupled Model ◽  
Polymerization Reactor ◽  
Gas Phase Polymerization

Evaluation of hydrodynamic behavior of the perforated gas distributor of industrial gas phase polymerization reactor using CFD-PBM coupled model

2015 ◽  
Vol 82 ◽  
pp. 344-361 ◽  
Author(s):  
Vahid Akbari ◽  
Tohid Nejad Ghaffar Borhani ◽  
Roya Aramesh ◽  
Mohd. Kamaruddin Abd. Hamid ◽  
Ahmad Shamiri ◽  
...  
Keyword(s):  
Gas Phase ◽  
Coupled Model ◽  
Hydrodynamic Behavior ◽  
Gas Distributor ◽  
Polymerization Reactor ◽  
Gas Phase Polymerization

Heat Transfer of Polymer Particles in Gas-Phase Polymerization Reactors

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Yaghoub Behjat ◽  
Mohammad Ali Dehnavi ◽  
Shahrokh Shahhosseini ◽  
Seyed Hassan Hashemabadi
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Gas Phase ◽  
Transfer Rate ◽  
Fluid Dynamic ◽  
Convective Heat Transfer Coefficient ◽  
Particle Surface ◽  
Cfd Modeling ◽  
Polymerization Reactor ◽  
Gas Phase Polymerization

In this paper the effects of particles configuration and particles distance on the heat transfer rate in a gas phase olefin polymerization reactor have been studied using the computational fluid dynamic (CFD) modeling approach. The goal was to determine the causes of particle overheating in this reactor. It has been shown that classic correlations such as Ranz-Marshall are sufficiently adequate when far away particles with no interactions are to be modeled. However, when particles are sufficiently close to having interactions, these correlations fail to satisfactorily predict the convective heat transfer coefficient. The results indicate an increase in particle distance leads to an increase in the Nusselt number on the particle surface. Therefore, for particles with a large distance and triangular or rotated square configurations, the local Nusselt number is closer to the Nusselt number for a single particle.

Multivariable control strategy based on bifurcation analysis of an industrial gas-phase polymerization reactor

2009 ◽  
Vol 19 (3) ◽  
pp. 530-538 ◽  
Author(s):  
Nina P.G. Salau ◽  
Gustavo Alberto Neumann ◽  
Jorge O. Trierweiler ◽  
Argimiro R. Secchi
Keyword(s):  
Gas Phase ◽  
Bifurcation Analysis ◽  
Control Strategy ◽  
Multivariable Control ◽  
Polymerization Reactor ◽  
Gas Phase Polymerization

scholarly journals MOVING HORIZON ESTIMATION FOR AN INDUSTRIAL GAS PHASE POLYMERIZATION REACTOR

2007 ◽  
Vol 40 (12) ◽  
pp. 1040-1045 ◽  
Author(s):  
Jasmeer Ramlal ◽  
Kenneth V. Allsford ◽  
John D. Hedengren
Keyword(s):  
Gas Phase ◽  
Moving Horizon Estimation ◽  
Polymerization Reactor ◽  
Gas Phase Polymerization

Fluid dynamic numerical simulation of a gas phase polymerization reactor

2003 ◽  
Vol 43 (10-11) ◽  
pp. 1199-1220 ◽  
Author(s):  
Anne Gobin ◽  
Hervé Neau ◽  
Olivier Simonin ◽  
Jean-Richard Llinas ◽  
Vince Reiling ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Gas Phase ◽  
Fluid Dynamic ◽  
Polymerization Reactor ◽  
Gas Phase Polymerization ◽  
Dynamic Numerical Simulation
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