Patent ID: 9051230
Filing Date: 2015-06-09
Classification: C07C

Abstract:
1. A process for producing propylene from paraffins, the process comprising the steps of: combining an effluent comprising propylene and propane from a paraffin dehydrogenation reactor with an offgas stream from a butane isomerization process comprising propane and hydrogen to form a combined effluent stream; passing the combined effluent stream through a chloride treater and dryer unit to generate a treated combined effluent stream; separating the hydrogen from the treated combined effluent stream to form a hydrogen stream and passing the hydrogen stream to the paraffin dehydrogenation reactor; separating a remainder of the treated combined effluent stream into a propylene product stream and a propane-rich recycle stream; passing the propane-rich recycle stream to a separation unit to generate a propane rich-overhead stream, and a C passing the C passing the C introducing the propane-rich overhead stream to the paraffin dehydrogenation reactor operating at effective dehydrogenation conditions to produce the effluent comprising propylene and propane.