Winter diesel fuel production from a fischer-tropsch wax
AssigneeExxonMobil Research and Engineering Company
InventorsPaul Joseph Berlowitz, Daniel Francis Ryan, Robert Jay Wittenbrink, W. Berlin Genetti, Jack Wayne Johnson
Life of this patent
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Abstract
A process for the production of a winter diesel fuel from wax containing hydrocarbons produced by the Fischer-Tropsch hydrocarbon synthesis process. A 300° F.+ Fischer-Tropsch fraction is upgraded first by hydroisomerization followed by catalytic dewaxing resulting in a diesel fuel suitable for use as a winter diesel fuel having excellent cold flow properties and reduced emissions.
Claims33
A process for producing a fuel comprising contacting in a first reaction zone a feed comprising a 300° F.+ Fischer-Tropsch derived fraction and hydrogen or a hydrogen containing gas with a first catalyst comprising a hydroismerization catalyst to form a first zone effluent and contacting in a second reaction zone at least a portion of the liquid product from the first zone effluent with a second catalyst comprising a catalytic dewaxing molecular sieve catalyst with monodimensional channels containing 10 member rings to form a second zone effluent comprising an isomerized hydrocarbon product.
A fuel comprising a Fischer-Tropsch derived hydrocarbon distillate that was treated with at least one of hydrotreating and hydroisomerization having 464° F.≦T95≦662° F. and a cold filter plugging point below about −31° F.
A fuel comprising a Fischer-Tropsch derived hydrocarbon distillate that was treated with at least one of hydrotreating and hydroisomerization, having 473° F.≦T95≦644° F. and a cold filter plugging point below about −31° F.
A fuel comprising a Fischer-Tropsch derived hydrocarbon distillate that was treated with at least one of hydrotreating and hydroisomerization, having 473° F.≦T95≦635° F. and a cold filter plugging point below about −31° F.
A process for producing a fuel useful as a diesel fuel which process is conduced in a single reaction vessel comprising two reaction zones comprising:
- (a) contacting in a first reaction zone a feed comprising a 300° F.+ Fischer-Tropsch derived distillate fraction and hydrogen or a hydrogen containing gas with a first catalyst comprising a hydroisomerization catalyst to form zone effluent, and
- (b) passing said total first zone effluent into a second reaction zone comprising a hydroprocessing catalyst selected from the group consisting of hydrocracking catalyst, hydroisomerization catalyst and mixtures thereof, wherein at least one hydroprocessing catalyst is selected from the group consisting of SAPO-11, SAPO-41, ZSM-22, ZSM-23, ZSM-48, ZSM-57, SSZ-11, SSZ-32, SSZ-41, and SSZ-43, to form a second zone effluent comprising an isomerized hydrocarbon product.
Dependencies are inferred from the claim text.