Patent ID: 8518149
Filing Date: 2013-08-27
Classification: C01B,Y02P

Abstract:
1. A process, comprising: compressing in a first stage of a compressor a gas mixture of vaporized liquid chlorine, a feed gas containing chlorine and chlorine heavy compounds having a molecular weight of at least 85 grams/mole to produce a compressed gas at a first compression pressure; supplying the gas mixture at the first compression pressure to a chlorine heavies removal tower; removing at least some of the chlorine heavy compounds from the gas mixture in the chlorine heavies removal tower; compressing in a second stage of the compressor the gas mixture having a reduced concentration of chlorine heavy compounds to further compress the compressed gas; condensing in a condenser and a heat recovery unit chlorine in the compressed gas into liquid chlorine; vaporizing a first portion of the liquid chlorine to provide a heat of condensation to condense chlorine from the compressed gas into liquid chlorine; and vaporizing a second portion of the liquid chlorine to provide the vaporized liquid chlorine for the gas mixture and a heat of condensation to cool a tail gas from the process.