FIELD: chemistry.
SUBSTANCE: invention relates to a process for producing ethylene dichloride (EDC) by chlorination and/or oxychlorination of ethylene, comprising purifying the EDC stream in accordance with the following steps: eventually removing the lower boiling impurities from the EDC stream so as to generate a stream of EDC substantially free from lower boiling impurities; feeding this EDC stream to a heavy fraction distillation column so as to obtain a top stream of substantially pure EDC and a bottom stream comprising higher boiling impurities and EDC. EDC stream fed to the heavy fraction distillation column is at least partly heated up by a heater using waste heat available in the EDC manufacturing process itself, and where the waste heat in the heat exchanger is generated by compressing a portion of the top stream of substantially pure EDC from the heavy fraction column using a steam recompression unit.
EFFECT: technical result is effective energy saving.
6 cl, 15 dwg, 9 tbl
