DE2836645

• Main Authors: LE PAGE, JEAN-FRANCOIS, RUEIL-MALMAISON, FR, COSYNS, JEAN, MAULE, FR, JUGUIN, BERNARD, RUEIL-MALMAISON, FR, MIQUEL, JEAN, PARIS, FR
• Format: Patent
• Language: English
• Published: 27.04.1989
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; GENERAL METHODS OF ORGANIC CHEMISTRY; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MINERAL WAXES; NATURAL GAS; 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; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

Process for producing butane and gasoline of high isooctane content, from a C4 olefin cut issued from a steam cracking unit, comprising the steps of: polymerizing at least 90% of the isobutene of the cut mainly to dimers and trimers thereof, hydrogenating the resulting polymerization mixture to normal butane, isooctane and isododecane, supplying the effluent from the hydrogenation unit to a separation zone to recover a gaseous fraction and a liquid mixture, and fractionating the liquid mixture to separate gasoline of high isooctane content, a C3- fraction and a butane fraction which is recycled to the steam cracking unit.