PROCESS AND CATALYTIC SYSTEM FOR ENHANCING THE FUEL QUALITY OF HYDROCARBON MIXTURES

• Main Authors: RABL, SANDRA, CALEMMA, VINCENZO, FERRARI, MARCO MASSIMO, WEITKAMP, JENS
• Format: Patent
• Language: English; French; German
• Published: 04.07.2012
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; 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; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

A process is described for enhancing the fuel properties of hydrotreated, and possibly dearomatized, hydrocarbon mixtures, which comprises putting said mixtures in contact, in the presence of hydrogen, with a new catalytic system comprising: (1) a zone (I) containing a metallic component T1 selected from Pt, Pd and mixtures thereof, and a carrier S1 selected from: (a) dealuminated large-pore zeolites, (b) large-pore zeolites having a crystalline lattice based on silica and alumina, exchanged with one or more metals Me selected from alkaline metals, alkaline-earth metals, lanthanoids or mixtures thereof, and containing x moles of hydrogen ions per mole of aluminium wherein x varies from 0.04 to 0.4, (c) amorphous silico-aluminas, possibly containing phosphorous; (2) a zone (II) containing a metallic component T2 selected from Ir, a mixture of Ir and Pt and a mixture of Ir and Rh, and containing a carrier S2 selected from dealuminated large-pore zeolites, amorphous silico-aluminas, borated alumina, silica, ceria, titania, zirconia.