Hydro-dealkylation process to generate high quality fuels, base stocks and waxes
AssigneeExxonMobil Technology and Engineering Company
InventorsJonathan D. Webb, Shifang Luo, Xinrui Yu, Hyung Suk Woo
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Abstract
Provided are methods of hydro-dealkylation of hydrocarbon feedstock to produce an intermediate hydrocarbon product having a boiling point at T10 of greater than about 500° F.+ by distillation method ASTM D7169 and a viscosity index greater than about 120 in accordance with ASTM D2270 where at least about 50 percent of the hydrocarbon feedstock is a SIMDIS of 400° F. The intermediate hydrocarbon product can be used to produce a base stock, a wax and/or paraffinic diesel.
Claims25
A method of hydro-dealkylation of a hydrocarbon feedstock to provide an intermediate hydrocarbon product comprising:
- providing a hydrocarbon feedstock comprising crude oil or a fractionated hydrocarbon stream or blend thereof having a paraffin to ring compound ratio in a VGO boiling range of between about T10 of 650° F. (340° C.) to about T90 of 1050° F. (565° C.) in accordance with ASTM D2887 greater than or equal 0.2 and at least about T50 percent of the hydrocarbon feedstock is a SIMDIS of 400° F. (204° C.);
- and
- reacting the hydrocarbon feedstock and hydrogen in the presence of a hydrotreating catalyst at a temperature between about 500° F. (260° C.) to about 1200° F. (650° C.) and at pressure between about 400 psig to about 2400 psig to produce an intermediate hydrocarbon product having a boiling point at T10 of greater than about 500° F.+ (260° C.+) to 650 CF (340°F.) by distillation method ASTM D7169 and a viscosity index greater than about 120 in accordance with ASTM D2270.
A method of producing a base stock and/or wax comprising:
- providing a hydrocarbon feedstock comprising crude oil or a fractionated hydrocarbon stream or blend thereof having a paraffin to ring compound ratio in a VGO boiling range of between about 650° F. (340° C.) to about 1050° F. (565° C.) greater than or equal 0.2 and at least about 50 percent of the hydrocarbon feedstock is a SIMDIS of 400° F. (204° C.);
- reacting the hydrocarbon feedstock and hydrogen in the presence of a hydrotreating catalyst at a temperature between about 500° F. (260° C.) to about 1200° F. (650° C.) and at pressure between about 400 psig to about 2400 psig to produce an intermediate hydrocarbon product;
- and fractionating the intermediate hydrocarbon product to produce a base stock and/or a wax, wherein the base stock and the wax each have a boiling point at T10 of greater than about 650° F.+ (340° C.+) by distillation method ASTM D7169 and a viscosity index greater than about 120 in accordance with ASTM D2270.
A method of producing at a paraffinic diesel comprising:
- providing a hydrocarbon feedstock comprising crude oil or a fractionated hydrocarbon stream or blend thereof having a paraffin to ring compound ratio in a VGO boiling range of between about 650° F. (340° C.) to about 1050° F. (565° C.) greater than or equal 0.2;
- reacting the hydrocarbon feedstock and hydrogen in the presence of a hydrotreating catalyst at a temperature between about 500° F. (260° C.) to about 120020 F. (650° C.) and at pressure between about 400 psig to about 2400 psig to produce an intermediate hydrocarbon product;
- and
- fractionating the intermediate hydrocarbon product to produce a paraffinic diesel, wherein the paraffinic diesel having a boiling point of at T10 of greater than about 500° F.+ (260° C.+) by distillation method ASTM D7169 and Cetane number greater than or equal to 60 in accordance with ASTM 6870.
Dependencies are inferred from the claim text.