Invention Grant
- Patent Title: Multistage removal of heteroatoms and wax from distillate fuel
- Patent Title (中): 从馏出燃料中多步去除杂原子和蜡
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Application No.: US10938301Application Date: 2004-09-10
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Publication No.: US07282138B2Publication Date: 2007-10-16
- Inventor: Edward S. Ellis , Ramesh Gupta , William J. Novak
- Applicant: Edward S. Ellis , Ramesh Gupta , William J. Novak
- Applicant Address: US NJ Annandale
- Assignee: ExxonMobil Research and Engineering Company
- Current Assignee: ExxonMobil Research and Engineering Company
- Current Assignee Address: US NJ Annandale
- Agent G. J. Hughes; Lawrence E. Carter
- Main IPC: C10G69/02
- IPC: C10G69/02

Abstract:
A distillate fuel feed is hydrotreated to remove heteroatoms and then separated into light and heavy hydrotreated fractions, with the heavy fraction catalytically dewaxed to improve low temperature properties. The hydrotreating and dewaxing are conducted in separate stages, which may be in the same reactor vessel. Fresh hydrogen may be passed into the dewaxing stage, with the dewaxing stage gaseous effluent then passed into the hydrotreating stage to provide hydrogen for the hydrotreating. Existing hydrotreating reaction vessels and facilities may be retrofitted to add one or more dewaxing stages.
Public/Granted literature
- US20050092654A1 Multistage removal of heteroatoms and wax from distillate fuel Public/Granted day:2005-05-05
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