METHOD OF OPERATING INTERMEDIATE-FRACTION HYDROFINING REACTOR AND INTERMEDIATE-FRACTION HYDROFINING REACTOR

• Main Author: NASUNO, KAZUYA
• Format: Patent
• Language: English; French; German
• Published: 07.12.2011
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; 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

There is provided an operation method of a middle distillate hydrotreating reactor which hydrotreats and hydroisomerizes a middle distillate including components of a boiling point range equivalent to gas oil among FT synthesis hydrocarbons synthesized by the Fisher-Tropsch synthesis reaction, the operation method comprising the steps of: bringing the middle distillate into contact with a catalyst to hydrotreat and hydroisomerize the middle distillate to produce hydrotreated middle distillate; measuring the cloud point of the hydrotreated middle distillate flowing out from the middle distillate hydrotreating reactor; and controlling the operating conditions of the middle distillate hydrotreating reactor so that the cloud point comes to a predetermined target value.