Deacidification method for distillate oil

• Main Authors: TIAN RAN, ZHU JINLING, LV QIAN, ZHAO YE, WANG FUCUN, SUN SHENGBO, LI FENGXUAN, SUN FAMIN, LIU WENYONG, WANG GANG, GE DONGMEI, FENG XIUFANG, MA SHOUTAO, ZHANG WENCHENG
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2013
• 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

The invention provides a deacidification method for distillate oil. According to the deacidification method, the distillate oil is contacted with a catalyst under the conditions of a reaction temperature of 200 to 350 DEG C, hydrogen pressure of 4 to 15 MPa, liquid hour volume velocity of 0.3 to 3.0/h and a volume ratio of hydrogen to oil of 300 to 1000, wherein the catalyst comprises, by weight (100%), 1 to 5% of magnesium in terms of oxide, 1 to 20% of a phosphorus-aluminum molecular sieve or a silicon-aluminum molecular sieve, 1 to 10% of Co and/or Ni and 5 to 30% of Mo and/or W, with the balance being alumina. The method has better hydrogenation and deacidification effects on the distillate oil than conventional methods do and has a good hydrogenation effect on inferior distillate oil with high content of sulfur and nitrogen.