still for framstellning of olefiniskt omettade kolveten from a kolveteutgangsmaterial including a petroleumrest by fluidized catalytic cracking and thermal cracking efterfoljande

摘要

Hydrocarbon feedstock containing petroleum residuum is catalytically cracked in a heavy oil cracking unit to produce a naphtha feed suitable for processing by steam pyrolysis to olefins. By the process integration disclosed, internal gas compression energy requirements for olefins recovery are furnished by steam generated in the heavy oil cracking unit.