PROCEDE D'HYDROCRAQUAGE D'HUILES LOURDES EN PRESENCE D'ADDITIF MELANGE SEC FORME DE CHARBON OU D'ESCARBILLES ET D'UN COMPOSE METALLIQUE

• Main Author: THEO J. W. DE BRUIJN, JAROSLAV F. KRIZ ET ADOLFA E. SILVA
• Format: Patent
• Language: French
• Published: 15.01.1988
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; 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

In an process for the hydrocracking of heavy hydrocarbon oil, such as oils extracted from tar sands, the charge oil (10) in the presence of an excess of hydrogen is passed through a tubular hydrocracking zone (13), and the effluent (14) emerging from the top of the zone is separated (15) into a gaseous stream (18) containing a wide boiling range material and a liquid stream (16) containing heavy hydrocarbons. The hydrocracking process is carried out in the presence of an additive consisting of finely divided coal or other carbonaceous material dry mixed with a compound of a metal e.g. catalytically active metals such as iron, cobalt and molybdenum. The additive is slurried with the charge stock and has been found to greatly reduce coke precursors and thereby prevent the formation of carbonaceous deposits in the reaction zone while also being effective in reducing the sulphur concentration of the product.