Process for the desulfurization of hydrocarbonacecus oil

a hydrocarbonaceous oil and desulfurization technology, applied in the field of desulfurization of hydrocarbonaceous oil, can solve the problems of uneconomic, low yield of sulfur-free material from original hydrocarbonaceous oil, and high cost of hydrotreating known current hydrotreating techniques, so as to reduce the sulfur content of hydrocarbonaceous oil. , the effect of reducing the cost of hydrotreating is easy and economically feasibl

Inactive Publication Date: 2005-02-24
UOP LLC
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Benefits of technology

[0011] The present invention discloses a novel integrated process that is capable of easily and economically reducing the sulfur content of hydrocarbonaceous oil while achieving high recovery of the original feedstock. Important elements of the present inventi

Problems solved by technology

However, the removal of sulfur components that are sterically hindered becomes exceedingly difficult and therefore the removal of sulfur components to a sulfur level below about 100 ppm is very costly by known current hydrotreating techniques.
The disadvantage

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  • Process for the desulfurization of hydrocarbonacecus oil

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Embodiment Construction

[0014] The present invention provides an improved integrated process for the deep desulfurization of hydrocarbonaceous oil in a two-stage desulfurization process. In accordance with the present invention, a preferred hydrocarbonaceous oil feedstock contains distillable hydrocarbons boiling in the range from about 93° C. (200° F.) to about 565° C. (1050° F.) and more preferably from about 149° C. (300° F.) to about 538° C. (1000° F.). The hydrocarbonaceous oil feedstock is contemplated to contain from about 0.1 to about 5 weight percent sulfur and the process is most advantageously utilized when the feedstock contains high levels of sulfur and the desired desulfurized product contains a very low concentration of sulfur. Preferred product sulfur levels are less than about 100 wppm, more preferably less than about 50 wppm, and even more preferably less than about 30 wppm.

[0015] The hydrocarbonaceous oil containing sulfur compounds is introduced into a catalytic hydrodesulfurization zo...

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Abstract

A process for the desulfurization of hydrocarbonaceous oil wherein the hydrocarbonaceous oil is contacted with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone to reduce the sulfur level to a relatively low level then contacting the resulting hydrocarbonaceous stream from the hydrodesulfurization zone with an oxidizing agent to convert the residual, low level of sulfur compounds into sulfur-oxidated compounds. The resulting hydrocarbonaceous oil stream containing the sulfur-oxidated compounds is separated after decomposing any residual oxidizing agent by contacting the stream with an adsorbent material to adsorb the sulfur-oxidated compounds to produce a hydrocarbonaceous oil stream having a reduced concentration of sulfur-oxidated compounds. The spent adsorbent is regenerated and subsequently returned to adsorbent service.

Description

FIELD OF THE INVENTION [0001] The field of art to which this invention pertains is the desulfurization of hydrocarbonaceous oils to produce low concentrations of residual sulfur. BACKGROUND OF THE INVENTION [0002] There is an increasing demand to reduce the sulfur content of hydrocarbonaceous oil to produce products which have very low concentrations of sulfur and are thereby marketable in the ever more demanding marketplace. With the increased environmental emphasis on the requirement for more environmentally friendly transportation fuels, those skilled in the art have sought to find feasible and economical techniques to reduce the sulfur content of hydrocarbonaceous oil to low concentrations. [0003] Traditionally, hydrocarbons containing sulfur have been subjected to a catalytic hydrogenation zone to remove sulfur and produce hydrocarbons having lower concentrations of sulfur. Hydrogenation to remove sulfur is very successful for the removal of the sulfur from hydrocarbons that ha...

Claims

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Application Information

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IPC IPC(8): C10G27/04C10G53/14C10G67/12C10G67/14
CPCC10G27/04C10G67/14C10G67/12C10G53/14
Inventor ZINNEN, HERMAN A.CABRERA, CARLOS A.
Owner UOP LLC
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