Hydrocracking of gas oils with increased distillate yield

US9309472B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9309472-B2
Application numberUS-201414541393-A
CountryUS
Kind codeB2
Filing dateNov 14, 2014
Priority dateDec 3, 2013
Publication dateApr 12, 2016
Grant dateApr 12, 2016

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Abstract

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Methods are provided for improving the yield of distillate products from hydroprocessing of gas oil feedstocks, such as vacuum gas oils. It has been unexpectedly found that stripping of gases or fractionation to separate out a distillate fraction during initial hydrotreatment of a feed can provide a substantial increase in distillate yield at a desired amount of feedstock conversion. The improvement in yield of distillate products can allow a desired level of conversion to be performed on a feedstock for generating lubricating base oil products while reducing or minimizing the amount of naphtha (or lower) boiling range products. Alternatively, the improvement in yield of distillate products can correspond to an improved yield during a single pass through a reaction system, so that distillate yield is increased even though a lubricant boiling range product is not generated.

First claim

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What is claimed is: 1. A method for processing a feedstock to form a distillate product, comprising: contacting a feedstock having a T5 boiling point of at least about 473° F. (245° C.) with a first hydrotreating catalyst under first effective hydrotreating conditions to produce a first hydrotreated effluent, the first hydrotreating catalyst comprising at least one Group VIII non-noble metal and at least one Group VIB metal on a refractory support; performing a separation on the…

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What does patent US9309472B2 cover?
Methods are provided for improving the yield of distillate products from hydroprocessing of gas oil feedstocks, such as vacuum gas oils. It has been unexpectedly found that stripping of gases or fractionation to separate out a distillate fraction during initial hydrotreatment of a feed can provide a substantial increase in distillate yield at a desired amount of feedstock conversion. The improv…
Who is the assignee on this patent?
Vijay Rohit, Dandekar Ajit Bhaskar, Daage Michel, and 6 more
What technology area does this patent fall under?
Primary CPC classification C10G65/12. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Apr 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).