Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking

Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking

Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between -10 and - 40 DEG C to free the cracked gas from meth...

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Bibliographische Detailangaben
Hauptverfasser: LEUNK HENDREK DERK, HINDERINK ANTONIE PIETER, SBECKER GERHARD, HUBBERS THEODORUS PETRUS EVERA, GOTTSCHALK AXEL
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
CRACKING HYDROCARBON OILS
FUELS
LUBRICANTS
METALLURGY
MINERAL WAXES
ORGANIC CHEMISTRY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION
RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES
REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS
REFORMING OF NAPHTHA
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between -10 and - 40 DEG C to free the cracked gas from methane and hydrogen gas, whereafter the remaining stream is treated by distillation in a distillation unit to obtain a C4/C5 containing stream and the ethylene and propylene containing stream; whereafter the C4/C5 stream is treated with a hydrogen containing stream in a hydrogenation unit, whereafter a part of the hydrogenated C4/C5 stream is cooled to a temperature between -10 and -40 DEG C and recycled to the absorptive demethanizer and a part of the hydrogenated C4/C5 stream is separated.