Integrated Solvent Deasphalting and Slurry Hydrocracking Process

a technology of integrated solvent and hydrocracking, which is applied in the direction of hydrotreatment process, hydrocarbon oil cracking, hydrocarbon oil treatment, etc., can solve the problems of high metal contaminants, difficult to upgrade dao products with conventional fcc or hydrocracking, and use either a fixed bed, etc., to achieve high-value distillates

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

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Benefits of technology

[0008]Aspects of the invention relate to the finding that slurry hydrocracking (SHC) can be effectively integrated with other refining processes and particularly solvent deasphalting (SDA), hydrotreating, and/or crude oil fractionation to produce a high value distillate stream while recycling low-value gas oils, preferably to extinction, as well as at least

Problems solved by technology

The DAO products from SDA processes, and particularly those processes that are operated with relatively high recoveries of DAO and low recoveries of pitch, have high levels of metal contaminants and Conradson carbon residue, making such DAO products difficult to upgra

Method used

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  • Integrated Solvent Deasphalting and Slurry Hydrocracking Process
  • Integrated Solvent Deasphalting and Slurry Hydrocracking Process

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Embodiment Construction

[0018]Embodiments of the invention relate to the use of solvent deasphalting (SDA) in combination with slurry hydrocracking (SHC) to upgrade a heavy hydrocarbon feedstock. A representative heavy hydrocarbon feedstock to the SHC is a mixture of deasphalted oil (DAO), as a fresh feed component, and at least one liquid product recovered from the SHC effluent and recycled to an SHC reactor (or reaction zone). The DAO is often obtained from subjecting a crude oil vacuum distillation column residue to solvent deasphalting in the presence of a solvent. The heavy hydrocarbon feedstock to SHC may therefore comprise all or a portion of DAO produced from SDA, either directly from this process or following one or more pretreatment and / or fractionation steps. To reduce the overall costs and complexity of the integrated process, the DAO is usually not subjected to an additional extraction (e.g., involving phase separation), prior to passing the DAO to SHC for use as a heavy hydrocarbon feedstock ...

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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 deasphalted oil (DAO) produced in a solvent deasphalting (SDA) process, optionally with recycled SHC gas oil and recycled SHC pitch, and a solid particulate through an SHC reaction zone in the presence of hydrogen to obtain the SHC distillate. Recovery and recycle of SHC gas oil and pitch from the SHC effluent improves the overall conversion to naphtha and distillate products and decreases catalyst requirements.

Description

FIELD OF THE INVENTION[0001]The present invention relates to methods for preparing distillate hydrocarbons using slurry hydrocracking (SHC) to upgrade high-boiling or heavy hydrocarbons obtained from refinery operations and particularly solvent deasphalting (SDA). The integration of SHC with SDA 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]Solvent deasphalting (SDA) generally refers to refinery processes that upgrade hydrocarbon fractions using an extraction process in the presence of a solvent. The hydrocarbon fractions are often obtained from the distillation of crude oil, and include hydrocarbon residues (or resids) or gas oils from atmospheric column or vacuum column distillation. Solvents used in SDA are typically lower-boiling paraffinic hydrocarbons such as propane, butane, and their mixtures, having the ability to e...

Claims

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Application Information

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IPC IPC(8): C10C3/00C10G47/00C10G47/02
CPCC10G21/003C10G67/049C10G47/00
Inventor HAIZMANN, ROBERT S.BAUER, LORENZ J.SERBAN, MANUELAMCGEHEE, JAMES F.
Owner UOP LLC
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