RECOVERY OF ALCOHOLS FROM N-PARAFFINS BY PERVAPORATION

• Main Authors: HO, W., S., WINSTON, DARNELL, CHARLES, P, KOVEAL, RUSSELL, J, CHEN, TAN, JEN
• Format: Patent
• Language: English; French
• Published: 11.05.1994
• Edition: 5
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; 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

The present invention is a process for the recovery of normal alcohols, especially C1-C20 n-alcohols, preferably n-C4-C14 alcohols, most preferably n-C6-C11 alcohols from n-paraffins by means of pervaporation through a membrane. The alcohols/paraffin feed mixture may be that produced in the Fischer-Tropsch synthesis process wherein mixtures of CO and H2 are reacted to produce paraffin waxes and a minor but still valuable amount of alcohols. L'invention concerne un procédé de récupération d'alcools normaux, particulièrement des alcools-n C1-C20, de préférence des alcools n-C4-C14 et plus particulièrement encore des alcools n-C6-C11 à partir de paraffines-n au moyen d'évaporation à travers une membrane. Le mélange de charge alcools/paraffine peut être celui produit au moyen d'un procédé de synthèse de Fischer-Tropsch où on fait réagir des mélanges de CO et H2, de façon à obtenir des paraffines dures et une quantité mineure mais encore appréciable d'alcools.