Method for cleaning a cracking gas stream in a primary fractionation column

摘要

The invention relates to a method for separating a gasoline fraction and an oil fraction from a cracking gas stream (S) in a primary fractionation column (1), the ratio of the amount of substance per time unit of the gasoline fraction (F) returned to the gasoline section (20) at the top (11) relative to the amount of substance per time unit of the cracking gas (S) fed to the oil section (21) is in a range of 1:16 to 1:10, preferably 1:12 to 1:10.