Patent ID: 6783659
Filing Date: 2004-08-31
Classification: C07C,C10G

Abstract:
A process for producing a dilute ethylene stream and a dilute propylene stream from a cracked gas stream, said process comprising the following steps in the order named:(1) separating said cracked gas stream in a deethanizer zone to produce a C2âˆ’ stream and a C3+ stream; (2). hydrogenating said C2âˆ’ stream in a hydrogenation zone to remove a portion of the acetylene to produce said dilute ethylene stream; (3) separating said C3+ stream in a depropanizer zone to produce a C3âˆ’ stream and a C4+ stream; and (4) reacting said C3âˆ’ stream in a MAPD reactor zone to convert a portion of methylacetylene and propadiene to propylene and propane to produce said dilute propylene stream.