Patent ID: 7182840
Filing Date: 2007-02-27
Classification: C07C,Y02P,Y10S

Abstract:
1. Process for the recovery of reaction heat developed in the production of 1,2-dichloroethane from ethane and chlorine, comprising reacting chlorine and ethane in a reaction chamber thereby releasing heat and recovering the reaction heat contained in the 1,2-dichloroethane from the reaction chamber by means of at least one portion of vaporous 1,2-dichloroethane as latent heat and at least one more portion of liquid 1,2-dichloroethane as sensible heat so that said reaction heat can be exploited, solely for indirect heat transfer, for heating two fractionation columns required to remove from the 1,2-dichloroethane any impurity which is higher boiling than the 1,2-dichloroethane itself by pre-concentrating and post-concentrating the bottom products obtained in the fractionation columns, which bottom products comprise impurities in the 1,2-dichloroethane which are higher boiling than the 1,2-dichloroethane itself.