METHOD FOR CONVERTING LOWER HYDROCARBON INTO HEAVY FRACTION

PURPOSE:To efficiently convert lower hydrocarbons into heavy fraction with excellent catalytic activity and life span of a catalyst, by heat-treating lower hydrocarbons in contact with steam and O2 in the presence of a silica-alumina catalyst to effect oligomerization thereof. CONSTITUTION:A mixed g...

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Hauptverfasser:	YAMANE MAMORU, HATAKEYAMA KOJI
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PURPOSE:To efficiently convert lower hydrocarbons into heavy fraction with excellent catalytic activity and life span of a catalyst, by heat-treating lower hydrocarbons in contact with steam and O2 in the presence of a silica-alumina catalyst to effect oligomerization thereof. CONSTITUTION:A mixed gas of steam and oxygen having an H2O to O2 molar ratio of 50-1/1 is flowed through a silica-alumina catalyst having an SiO2 to Al2O3 ratio of 70/30-90/10 at a contact rate of 1-0.01mol./per wt. of catalyst to effect the contact at, e.g., 600-900 deg.C for a predetermined time to thereby effect the heat treatment, thus providing a catalyst for oligomerization. Lower hydrocarbons such as a gas and a naphtha fraction prepd. by catalytic cracking of a petroleum fraction or a residual oil contg. 2-10C olefinic hydrocarbons and 2-10C aliph. or arom. hydrocarbons are oligomerized under a pressure of 0-50kg/cm at room temp. - 200 deg.C in the presence of the above-mentioned heat-treated catalyst.