Modeling and parametric studies of a vapour recompression distillation system

A vapor recompression system for the separation of ethylene from a multicomponent feed has been modeled using the CHESS program and based on data from the Polymer Corporation. The experience in implementing CHESS on a CDC6400, and in using its property calculation features are reviewed. The modification of the CHESS modules, and new unit computations required for the study are described. Some typical applications of the model to seek improvements in plant operation are discussed. On a reproduit sur un modele un systeme base sur la recompression de vapeurs pour separer l'ethylene d'un melange a composant multiples, en se servant du programme CHESS et de donnees obtenues de Polymer Corporation. On decrit l'experience faite en utilisant CHESS sur un instrument CDC6400 et sa capacite pour calculer les proprietes. On expose egalement la modification des modules de CHESS et les nouveaux calculs unitaires requis pour l'etude. On discute certaines applications typiques du modele en vue d'ameliorer les operations a l'usine.