INVESTIGADORES
SARMORIA Claudia
artículos
Título:
Modeling of molecular weights in industrial autoclave reactors for high pressure polymerization of ethylene and ethylene-vinyl acetate
Autor/es:
SARMORIA, C; BRANDOLIN, ADRIANA; LÓPEZ RODRÍGUEZ, A; WHITELEY, K S; DEL AMO FERNÁNDEZ, B
Revista:
POLYMER ENGINEERING AND SCIENCE
Editorial:
Society of Plastics Engineers
Referencias:
Lugar: Brookfield; Año: 2000 vol. 40 p. 1480 - 1494
ISSN:
0032-3888
Resumen:
We
have incorporated mass balances of monomer, radical and polymer species to a
previously developed mixing model for high pressure autoclave polymerization
reactors. The customary quasi steady state approximation is not used, and the
method of moments is used to simplify the mass balance calculations. The
resulting moment model is able to calculate conversions, average molecular
weights, long chain branching and melt flow indexes at any point in the
reactor. It may also calculate
concentration and temperature profiles along the reactor. Results for two base
cases are presented in detail. Model predictions were compared with
experimental data obtained at the industrial reactor; excellent agreement was
obtained. The moment balance equations are presented in a modular way so that
they may be easily adapted to be used with any other mixing model for this type
of reactor.