Integrated process for deasphalting and desulfurizing whole crude oil

Inactive Publication Date: 2013-12-05
JGC CATALYSTS & CHEM LTD +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Mild hydrocracking is more cost effective than more severe processes but, generally, it results in production of lesser amounts of desired middle distillate products, which are of lower quality than the products of conventional hydrocracking.
One major technical challenge posed in hydrotreating and/or hydrocracking heavy oil fractions or whole crude is the effect of small concentrations of contaminants, such as organic nickel or vanadium containing

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  • Integrated process for deasphalting and desulfurizing whole crude oil

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[0026]This example describes an embodiment of the invention in which gasification of the “SDA” fraction was used to produce hydrogen, which was then used in the hydrocracking of the DAO fraction. It will be understood that the H2 may be supplied via other means.

[0027]A 1000 kg sample of crude oil was solvent deasphalted, using art known techniques, with butane solvents and adsorbents, in a reaction chamber, such as is depicted by “11” in FIG. 1. Prior to deasphalting, the crude oil was analyzed, and the results of this analysis are presented in the Table, column 1, which follows.

[0028]Following deasphalting, the asphalt fraction and deasphalted oil, or “DAO,” were also analyzed, and these results are presented in columns 2 and 3 of the Table.

[0029]The asphalt fraction was gasified by oxygen and steam combining it into membrane wall reactor or gasification chamber, depicted at “14” in FIG. 1. The mixture was heated to 1045° C., with a water to carbon ration of 0.6 (in terms of weight...

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Abstract

The invention relates to processes for removing impurities, such as asphalt, from whole crude oil. The invention is accomplished by first deasphalting a feedstock, followed by processing resulting DAO and asphalt fractions. The DAO fraction is hydrocracked, resulting in removal of sulfur and hydrocarbons which boil at temperatures over 370° C., and gasifying the asphalt portion.

Description

RELATED APPLICATION[0001]This application claims priority from U.S. Provisional Patent Application No. 61 / 655,732 filed Jun. 5, 2012, incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The invention relates to an integrated process for treating whole crude oil to remove asphalt and other impurities therefrom. To elaborate, the integrated process comprises the steps of separating asphalt from the whole crude oil, followed by treating the deasphalted oil via hydrotreatment / hydrocracking with a catalyst, to remove materials such as sulfur and nitrogen. In parallel, the recovered, asphalt containing fraction can be gasified, to produce hydrogen that is then used in the hydrocracking step.BACKGROUND AND PRIOR ART[0003]Conventional processes for treating crude oil involve distillation, and then various cracking, solvent refining, and hydroconversion processes, so as to produce a desired group of products, such as fuels, lubricating oil products, petro-chemicals, chemica...

Claims

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Application Information

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IPC IPC(8): C10G67/04
CPCC10G67/0463C10G67/049C10G2300/201C10J2300/0946C10G47/20C10J3/00Y02P20/52Y02P20/10
Inventor KOSEOGLU, OMER REFAUSHIO, MASARUNAKANO, KOJI
Owner JGC CATALYSTS & CHEM LTD
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