| 摘要 |
A PROCESS FOR THE PRODUCTION OF PROPYLENE, THE PROCESS INCLUDING: FRACTIONATING A HYDROCARBON STREAM COMPRISING N-BUTENES, ISOBUTYLENE, AND PARAFFINS INTO AT LEAST TWO FRACTIONS INCLUDING A LIGHT C4 FRACTION COMPRISING ISOBUTYLENE AND A HEAVY C4 FRACTION COMPRISING N-BUTENES AND PARAFFINS; CONTACTING AT LEAST A PORTION OF THE HEAVY C4 FRACTION WITH A METATHESIS CATALYST TO FORM A METATHESIS PRODUCT COMPRISING ETHYLENE, PROPYLENE, C4+ OLEFINS, AND PARAFFINS; FRACTIONATING THE METATHESIS PRODUCT INTO AT LEAST FOUR FRACTIONS INCLUDING AN ETHYLENE FRACTION, A PROPYLENE FRACTION, A C4 FRACTION COMPRISING C4 OLEFINS AND PARAFFINS, AND A C5+ FRACTION; CRACKING THE LIGHT C4 FRACTION AND THE C5+ FRACTION TO PRODUCE A CRACKING PRODUCT COMPRISING ETHYLENE, PROPYLENE, AND HEAVIER HYDROCARBONS; AND FRACTIONATING THE CRACKING PRODUCT INTO AT LEAST TWO FRACTIONS INCLUDING A LIGHT FRACTION COMPRISING PROPYLENE AND A FRACTION COMPRISING C5 TO C6 HYDROCARBONS. |
