Title:
【発明の名称】リサイクル形式により運転される燃料油水素化分解工程の未転換油からの高級潤滑基油供給原料の製造方法
Document Type and Number:
Japanese Patent JP2697749
Kind Code:
B2
Abstract:
A process is disclosed for producing feedstocks for manufacturing high quality lube base oil utilizing unconverted oil, which is produced from a fuels hydrocracker unit. The first step of the process is the distillation of an atmospheric residue under vacuum in a first vacuum distillation unit to produce a vacuum gas oil. The vacuum gas oil is then hydrotreated in a first reaction unit to remove impurities and produce a treated vacuum gas oil. The treated vacuum gas oil is then subjected to hydrocracking in a second reaction unit to yield light hydrocarbons. The light hydrocarbons are then subjected to a series of fractional distillations to separate light oil products and an unconverted oil. All or a fraction of the unconverted oil is fed to a second vacuum distillation unit to produce feedstocks of high quality lube base oil and a remaining portion. The remaining portion and, optionally, a fraction of the unconverted oil is recycled from the second vacuum distillation unit to the second reaction unit.
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Inventors:
Lee Yunkill
Min Worthik
Kwon Souk Hyun
Min Worthik
Kwon Souk Hyun
Application Number:
JP52525894A
Publication Date:
January 14, 1998
Filing Date:
May 16, 1994
Export Citation:
Assignee:
Yukon Limited
International Classes:
C10G7/00; C10G45/00; C10G45/04; C10G47/02; C10G7/06; C10G65/12; C10G69/02; C10G69/10; (IPC1-7): C10G65/12; C10G7/00; C10G45/04; C10G47/02
Attorney, Agent or Firm:
Toshio Shiozawa (1 person outside)