Method for generating middle distillates from a conventional heavy feedstock including step of selective hydrogenation of HCO EX FCC cut fraction

Method for generating middle distillates from a conventional heavy feedstock including step of selective hydrogenation of HCO EX FCC cut fraction

CN
  • CN 103,131,471 A
  • Filed: 11/23/2012
  • Published: 06/05/2013
  • Est. Priority Date: 11/24/2011
  • Status: Active Application
First Claim
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1. the method for a conversion of heavy hydrocar-bonaccous feedstock, to distillation range, the middle distillate (LCO) in 220 ℃

  • to 360 ℃

    scopes has the selectivity of raising to described method, described method is used catalytic cracking unit (FCC) and one or more selective hydration unit subsequently, in described method, the heavy overhead product cut (HCO) that the raw material of described selective hydration unit is obtained by the FCC from described cut forms, described heavy overhead product cut is formed and be it is characterized in that distillation range is between 320 ℃

    to 490 ℃

    by the thrcylic aromatic hydrocarbon compound of the amount that is greater than 60 % by weight, preferably in 360 ℃

    to 440 ℃

    scopes, the described cut of the HCO through selective hydration is reintroduced back to the reaction zone of described FCC unit, in described method, described selective hydration unit is under the pressure in 15 bar to 50 bar scopes, at the temperature in 325 ℃

    to 360 ℃

    scopes, under the existence of hydrotreating catalyst, operate, described hydrotreating catalyst comprises the nickel of 1 % by weight to 10 % by weight on alumina supporter, preferably the nickel of 1 % by weight to 5 % by weight (is expressed as nickel oxide, NiO) in conjunction with the molybdenum of 1 % by weight to 30 % by weight, preferably the molybdenum of 5 % by weight to 20 % by weight (is expressed as molybdenum oxide, MoO 3).

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