Optimisation of the use of hydrogen for hydrotreatment of hydrocarbon feedstocks

• Main Authors: Lecocq, Vincent, Plennevaux, Thomas, Pierron, Anne Claire
• Format: Patent
• Language: English
• Published: 08.05.2018
• Subjects: 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; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

The present invention discloses the use of hydrogen for the hydrotreating of hydrocarbon feedstocks. A process for hydrotreating a hydrocarbon feedstock, wherein: a) performing at least one hydrotreating step wherein at least a portion of said feedstock and a gaseous stream comprising hydrogen are contacted with a hydrotreating catalyst to obtain a catalyst comprising hydrogen and Sulfur and a nitrogen-containing compound; b) subjecting said hydrotreated effluent from step a) to gas / liquid separation to produce a first gaseous effluent and a first liquid effluent; c) The first liquid effluent expands and separates the first liquid effluent to obtain a second gaseous effluent and a second liquid effluent; d) cooling the second gaseous effluent and then carrying out the second gaseous effluent To obtain a third gaseous effluent and a third liquid effluent; and e) recirculating a portion of the third gaseous effluent.