PROCEDE D'ELIMINATION DE L'OXYSULFURE DE CARBONE CONTENU DANS UNE CHARGE D'HYDROCARBURES LIQUIDES

• Main Authors: BAUDOT ARNAUD, CADOURS RENAUD, JOLIMAITRE ELSA, MOUGIN PASCAL, HUYGHE RAPHAEL, TOTH ESZTER
• Format: Patent
• Language: French
• Published: 20.11.2009
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; CRACKING HYDROCARBON OILS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MINERAL WAXES; NATURAL GAS; 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; SEPARATION; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

The procedure consists of introducing a liquid hydrocarbon charge containing carbon oxysulfide and an aqueous solution of alcanolamines into a membrane contact unit (CM) with at least one membrane (M). The aqueous solution of alcanolamines is separated from the charge by the membrane, which is selected so that the carbon oxysulfide contained in the charge migrates into the solution. The aqueous solution and hydrocarbon charge with reduced carbon oxysulfide are then extracted from the membrane unit; the hydrocarbon charge is mixed with a solvent containing sulfur to remove mercaptans, and the aqueous solution is regenerated by distillation.