PROCESS FOR THE MANUFACTURE OF AT LEAST ONE ETHYLENE DERIVATIVE COMPOUND

摘要

Process for the manufacture of at least one ethylene derivative compound starting from a low value residual gas, preferably a ROG, according to which: a) the low value residual gas is subjected to a series of treatment steps in a low value residual gas recovery unit in order to remove the undesirable components present therein and to obtain a mixture of products containing ethylene and other constituents; b) the said mixture of products is separated into a fraction enriched with compounds which are lighter than ethylene, containing part of the ethylene (fraction A), into a fraction enriched with ethylene (fraction B) and into a heavy fraction (fraction C); c) fraction A and fraction B are separately conveyed to the manufacture of at least one ethylene derivative compound.