PROCESS AND SYSTEM FOR REMOVAL OF LIGHT ENDS AND NON-CONDENSABLES TO PREVENT BUILDUP IN AN OLEFIN/PARAFFIN MEMBRANE SEPARATION PROCESS

Systems and processes are provided to prevent light ends such as methane, ethylene and ethane from building up in an olefin/paraffin separation system that uses a combination of a membrane and distillation column for this separation. In one embodiment a small stripper column is provided downstream f...

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Bibliographische Detailangaben
Hauptverfasser:	SINGH, Mander, LIU, Chunqing, LUEBKE, Charles P, LISKEY, Carl, PHAM, Trung, ALBO, Simon E, ACIKGOZ, Saadet Ulas, KOZUP, Steven
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOUNDS THEREOF CRACKING HYDROCARBON OILS FUELS INORGANIC CHEMISTRY LUBRICANTS METALLURGY MINERAL WAXES NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL 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 SEPARATION TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING
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Beschreibung
Zusammenfassung:	Systems and processes are provided to prevent light ends such as methane, ethylene and ethane from building up in an olefin/paraffin separation system that uses a combination of a membrane and distillation column for this separation. In one embodiment a small stripper column is provided downstream from a selective hydrogenation reactor. In the other embodiment, a surge vessel with a receiver is added to the retentate stream of the membrane unit. L'invention concerne des systèmes et des procédés pour prévenir l'accumulation de fractions légères telles que le méthane, l'éthylène et l'éthane dans un système de séparation d'oléfine/paraffine, qui utilise une combinaison d'une membrane et d'une colonne de distillation pour la séparation. Dans un mode de réalisation, une petite colonne de strippage se situe en aval d'un réacteur d'hydrogénation sélective. Dans l'autre mode de réalisation, un bac de trop-plein comportant un élément récepteur est ajouté au flux de rétentat de l'unité membrane.