CSIR Central

Real-time inferencing of solid-liquid phase equilibria in solution polymerization of polyethylene

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata


Field	Value

Title	Real-time inferencing of solid-liquid phase equilibria in solution polymerization of polyethylene

Creator	Abbas, S Mukherjee, Rabibrata De, S R Ganguly, S

Subject	Crystal Chemistry, Thermodynamics, Phase Equilibria

Description	An algorithm for the real-time prediction of multi-component solid-liquid equilibrium (SLE) in a polyethylene (PE) process flowsheet has been attempted. While most of the available literature assumes the polymer to possess a single average molecular weight and lump the entire polymer as a single component, the present work proposes to consider a polydispersed multi-component fraction, characterized by the pseudo-component approach. The SLE model has been used to study the effects of monomer and polymer polydispersity in solution polymerization process. At first, it has been validated on the solubility data of n-alkanes, in n-hexane, polyethylene in M-xylene and on wax precipitation from a mixture of n-paraffins. The SLE model is based on perturbed chain SAFT (PC-SAFT) equation of state (EOS). An algorithm for the real-time prediction of SLE phase boundaries in solution polymerization has been subsequently presented. A simulation experiment on the polyethylene flowsheet highlighted the potential of real-time inferencing for industrial applications. (C) 2004 Elsevier B.V All rights reserved.

Publisher	Elsevier

Date	2004-12

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://cgcri.csircentral.net/421/1/Chem_Eng_Proc_43_%282004%29_1449%E2%80%931458.pdf Abbas, S and Mukherjee, Rabibrata and De, S R and Ganguly, S (2004) Real-time inferencing of solid-liquid phase equilibria in solution polymerization of polyethylene. Chemical Engineering and Processing: Process Intensification, 43 (12). pp. 1449-1458. ISSN 0255-2701

Relation	http://cgcri.csircentral.net/421/