# US 9,745,524 B2 · Process for the production of a gasoline with a low sulfur content > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,745,524 B2 - Document ID: US9745524B2 - Status: Granted - Kind: B2 - Application number: 14/439,458 - Filed: 2013-09-26 - Published: 2015-10-01 - Granted: 2017-08-29 - Earliest claimed: 2012-10-29 - Assignees: Ifp Energies Nouvelles - Applicants: IFP Energies nouvelles - Inventors: Olivier Touzalin; Philibert Leflaive; Diamantis Asteris; Delphine Largeteau; Jean Luc Nocca - Web page: https://patentgrep.com/patent/US9745524B2 ## CPC - C10G 45/38: in combination with chromium, molybdenum or tungsten metals, or compounds thereof - C10G 29/205: {by reaction with hydrocarbons added to the hydrocarbon oil} - C10G 45/06: containing nickel or cobalt metal, or compounds thereof - C10G 45/08: in combination with chromium, molybdenum, or tungsten metals, or compounds thereof - C10G 45/32: Selective hydrogenation of the diolefin or acetylene compounds - C10G 45/36: containing nickel or cobalt metal, or compounds thereof - C10G 2300/4087: Catalytic distillation - C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES ## Abstract This invention relates to a process for treatment of a gasoline that comprises diolefins, olefins and sulfur-containing compounds including mercaptans, consisting of a stage for treatment of the gasoline in a distillation column (2) comprising at least one reaction zone (3) including at least one catalyst that makes it possible to carry out the addition of mercaptans to the olefins that are contained in the gasoline that distills toward the top of the catalytic column. ## Claims ### Claim 1 A process for treating a gasoline comprising diolefins, olefins, and sulfur-containing compounds including mercaptans, consisting of a stage for treating gasoline in the presence of hydrogen in a distillation column (2) comprising at least one reaction zone (3) including at least one catalyst, with the catalyst being in sulfide form and comprising a substrate that consists of gamma-alumina or delta-alumina with a specific surface area of between 70 m2/g and 350 m2/g, a content by weight of oxide of the element of group VIb of between 1 and 30% by weight relative to the total weight of the catalyst, a content by weight of oxide of the element of group VIII of between 1 and 30% by weight relative to the total weight of the catalyst, a sulfurization rate of the metals that constitute said catalyst that is at least equal to 60%, a molar ratio between the metal of group VIII and the metal of group VIb of between 0.6 and 3 mol/mol, in which: gasoline is injected into the distillation column at a level located below the reaction zone (3) in such a way as to separate a desulfurized light gasoline at a point located above the reaction zone and a heavy gasoline comprising the majority of the sulfur-containing compounds at the bottom of the column, and concurrently the gasoline that distills at the top of the catalytic column is brought into contact with the catalyst of the reaction zone (3) and the hydrogen in such a way as to provide desulfurized light gasoline, and in which the distillation column is configured for operating as a depentanizer in such a way as to provide a light gasoline that has at most 5 carbon atoms or in which the distillation column is configured for operating as a dehexanizer in such a way as to provide a light gasoline that has at most 6 carbon atoms. ### Claim 2 (depends on 1) The process according to claim 1, in which the element of group VIII is nickel or cobalt. ### Claim 3 (depends on 1) The process according to claim 1, in which the element of group VIb is molybdenum or tungsten. ### Claim 4 (depends on 1) The process according to claim 1, in which the element of group VIII is nickel and the element of group VIb is molybdenum. ### Claim 5 (depends on 4) The process according to claim 4, in which the content of nickel oxide is between 4% and 12% by weight, and the content of molybdenum oxide is between 6% and 18% by weight relative to the total weight of catalyst. ### Claim 6 (depends on 1) The process according to claim 1, in which the column also comprises a catalytic bed arranged below or above the reaction zone (3) and comprises a catalyst for isomerization of the olefins, with said isomerization catalyst comprising at least one metal of group VIII deposited on a porous substrate. ### Claim 7 (depends on 1) The process according to claim 1, in which the metal of group VIII is palladium, and the palladium content expressed in % by weight of palladium metal relative to the weight of the isomerization catalyst is between 0.1 and 2%. ### Claim 8 (depends on 7) The process according to claim 7, in which the porous substrate of the isomerization catalyst is alumina, nickel aluminate, silica, silicon carbide, or a mixture thereof, and the metal of group VIII is nickel or palladium. ### Claim 9 (depends on 1) The process according to claim 1, in which the distillation column is configured for operating as a depentanizer in such a way as to provide a light gasoline that has at most 5 carbon atoms. ### Claim 10 (depends on 1) The process according to claim 1, in which the distillation column is configured for operating as a dehexanizer in such a way as to provide a light gasoline that has at most 6 carbon atoms. ### Claim 11 (depends on 1) The process according to claim 1, in which the gasoline that is to be treated is directly obtained from a unit for catalytic cracking, coking, visbreaking or steam-cracking.