Integrated Slurry Hydrocracking and Coking Process

a technology of hydrocracking and coking process, applied in the direction of hydrocarbon oil cracking process, hydrocarbon oil treatment products, thermal non-catalytic cracking, etc., can solve the problems of difficulty in further upgrading using fcc, hydrocracking, or hydrotreating, and achieve high-value distillate

Inactive Publication Date: 2010-05-20
UOP LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007]Aspects of the invention relate to the finding that slurry hydrocracking (SHC) can be effectively integrated with other refining processes such as coking, hydrotreating, and/or crude oil fractionation to produce a high value distillate stream while recycling unwanted gas oils, preferably to extinction. SHC is generally known in the art for its ability to convert vacuum column residues to lighter pro

Problems solved by technology

Moreover, coker gas oil is (1) often readily available in large quantities, particularly in the case of refineries processing heavy crude oils, and (2) difficult

Method used

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  • Integrated Slurry Hydrocracking and Coking Process
  • Integrated Slurry Hydrocracking and Coking Process
  • Integrated Slurry Hydrocracking and Coking Process

Examples

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Embodiment Construction

[0014]Embodiments of the invention relate to the use of slurry hydrocracking (SHC) in combination with coking to upgrade a heavy hydrocarbon feedstock. A representative heavy hydrocarbon feedstock to the SHC is a mixture of SHC gas oil, recovered from the SHC effluent and recycled to an SHC reactor (or reaction zone), and a refinery coker gas oil. According to one embodiment, for example, the heavy hydrocarbon feedstock comprises both a vacuum column residue and a coker gas oil (e.g., obtained from a delayed coker or a fluidized coker). Integration of a refinery coker operation with SHC provides important benefits as discussed above. The heavy hydrocarbon feedstock, in addition to recycled SHC gas oil and coker gas oil, may contain further components that can benefit from the SHC operation to decrease the overall molecular weight of the heavy hydrocarbon feedstock, and / or remove organic sulfur and nitrogen compounds and metals. According to various embodiments, SHC is improved (e.g....

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Abstract

Integrated slurry hydrocracking (SHC) and coking methods for making slurry hydrocracking (SHC) distillates are disclosed. Representative methods involve passing a slurry comprising a recycle SHC gas oil, a coker gas oil, a vacuum column resid, and a solid particulate through an SHC reaction zone in the presence of hydrogen to obtain the SHC distillate. Recovery of an SHC pitch from fractionation of the SHC reaction zone effluent provides an additional possibility for integration with the coker, and particularly via the upgrading of the SHC pitch in the coker to provide coke and lighter hydrocarbons such as SHC vacuum gas oil (VGO).

Description

FIELD OF THE INVENTION[0001]The present invention relates to methods for preparing distillate hydrocarbons using slurry hydrocracking (SHC) to upgrade gas oils obtained from refinery operations and particularly delayed coking. The integration of SHC with coking and optionally other processes such as crude oil fractionation and / or hydrotreating may be used to obtain a high quality (e.g., high API gravity and / or low sulfur) distillate.DESCRIPTION OF RELATED ART[0002]Gas oils and particularly vacuum gas oil (VGO) are produced in a number of refinery operations that process heavy hydrocarbon feedstocks. Such operations include coking, crude oil fractionation, and visbreaking. Coking processes (e.g., delayed coking or fluidized coking) involve thermal (i.e., non-catalytic) cracking of atmospheric and vacuum column residues to generate lighter hydrocarbons and solid coke. See, for example, Meyers, R. A., Handbook of Petroleum Refining Processes, 3rd Ed., Ch. 12, McGraw-Hill (2004). Delaye...

Claims

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Application Information

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IPC IPC(8): C10G11/02
CPCC10G47/26C10G2400/06C10G2400/04
Inventor HAIZMANN, ROBERT S.ZIMMERMAN, PAUL R.
Owner UOP LLC
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