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A mathematical model for a continuous esterification process with recycle between terephthalic acid and ethylene glycol
Author(s) -
Yamada Toshiro
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070451107
Subject(s) - oligomer , saponification , terephthalic acid , ethylene glycol , enthalpy , polymerization , heat transfer , thermodynamics , chemical engineering , degree of polymerization , materials science , distillation , mass transfer , melting point , chemistry , degree (music) , organic chemistry , polymer chemistry , chromatography , polyester , polymer , physics , engineering , acoustics
A new mathematical model for a continuous recycle esterification process has been derived by basically the same procedure as the continuous process of a cascade type, reported earlier, which includes material and heat balances. Such a model can give extensive information about the optimum design of a new plant through the predictions of oligomer characteristics (concentrations of carboxyl and hydroxyl end groups, number average molecular weight, number average degree of polymerization, esterification and saponification degree, DEG content, melting point of oligomer, etc.), distillate properties (concentrations of EG and water in the vapor phase), heat transfer area, mass flow rate of heating medium, amount of heat supplied by heating medium, enthalpy moving with recycle, and amount of heat removed from each reactor. © 1992 John Wiley & Sons, Inc.