METHOD FOR REGENERATING HYDROCARBON PROCESSING CATALYSTS

• Main Authors: Nagy, Eric, Dufresne, Pierre, Galliou, Pauline
• Format: Patent
• Language: English; French; German
• Published: 19.09.2018
• 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

Regenerating a catalyst containing at least a metal of the group VIII and at least one metal of the VIB group deposited on a refractory oxide support, comprises: (a) at least a first step of heat treatment of the catalyst in the presence of oxygen at 350-550[deg] C; and (b) at least one second step of deposition of one or more additives having ester structure (I) on the catalyst surface,. Regenerating a catalyst containing at least a metal of the group VIII and at least one metal of the VIB group deposited on a refractory oxide support, comprises: (a) at least a first step of heat treatment of the catalyst in the presence of oxygen at 350-550[deg] C; and (b) at least one second step of deposition of one or more additives having ester structure of formula (R 1>O-C(=O)-R 2>-S-R 3>) (I) on the catalyst surface. R 1>, R 3>H or optionally saturated 1-30C hydrocarbon group; R 2>optionally saturated 1-30C divalent hydrocarbon group optionally containing one or more heteroatoms comprising O and N, and optionally substituted by one or more groups of -OH,-OR,-NH 2, -NHR or -NRR1a; and R, R1a : 1-4C, preferably 1-2C alkyl groups. Independent claims are included for: (1) the regenerated catalyst obtained by the process; and (2) use of one or more additives (I) to increase the activity of a catalyst containing at least one metal from group VIII and at least one VIB group metal deposited on a refractory oxide support.