PROCESS FOR TREATMENT OF CRACKED GASES WHILST OBTAINING ETHYLENE

摘要

The process according to the invention is based on the admixing of colder water, preferably process water, to the cracked gases in the compression stage(s) of an ethylene plant upstream of the cooling in the heat exchangers. This effects precooling of the cracked gases down to approximately the dew point thereof. The decisive advantages of the process according to the invention are a substantial improvement in heat transfer, fouling and polymerisation behaviour in the heat exchangers, preferably crossflow heat exchangers.