Process for Removing Nickel and Vanadium From Hydrocarbons

a technology of hydrocarbons and nickel, which is applied in the direction of refining with metal salts, refining with non-metals, and water treatment, etc., can solve the problems of toxic to humans, nickel and vanadium can be a problem, and toxic to humans at a certain level or concentration

Inactive Publication Date: 2008-07-31
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0018]In one embodiment of the invention, there is provided, in one form, a method of transferring nickel and vanadium from a hydrocarbon phase to a water phase involving adding to an emulsion of hydrocarbon and water, an effective amount of an Extrac...

Problems solved by technology

Nickel and vanadium can be a problem when present in hydrocarbons in at least two ways.
First, both metals are toxic in humans.
Ironically, both nickel and vanadium are also nutrients, but like many nutrients, they are toxic above a certain level or concentration.
Repeated exposures to nickel may lead to asthma and contact dermatitis, symptoms of which may worsen if the diet is high in nickel.
Under some conditions, large amounts of nickel may precipitate magnesium deficiency or cause accumulation of iron or zinc.
If follows then tha...

Method used

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Examples

Experimental program
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example

[0063]An EDDA test, as set forth above, is conducted using North African Crude Oil as the hydrocarbon and with the wash water level in Step 2 being 5%. The Extractant Composition is incorporated into the wash water at the concentrations shown in the Table. The test is conducted using a blank as a control and the materials shown in the Table as Extractant Compositions.

[0064]After completing the EDDA test, the EDDA desalted hydrocarbon is tested for nickel and vanadium. Test results are shown below in the Table.

TABLEExtractantCompositionPercentConcentration[V][Ni]ReductionExtractant Composition(ppm)ppmppmV / NiBlankna16.836.6naToluene Diisocyanate10011.127.734 / 24Potassium Thiocyanate16510.025.641 / 30Mercaptoacetic Acid*10015.534.47 / 6Dithiocarbamate A*10015.634.27 / 6Dithiocarbamate B*10016.836.20 / 1Phosphonium Sulfate*20015.236.6na*A comparative example and not an example of the invention.

[0065]The results shown above in the Table demonstrate that the toluene diisocyanate and potassium thio...

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Abstract

Nickel and/or vanadium can be removed or transferred from a hydrocarbon phase to a water phase using an Extractant Composition selected from an isocyanate, a thiocyanate, a cyanides, mercaptides, nitrites, and mixtures thereof. The Extractant Composition may also include at least one mineral acid, a solvent, and other additives. The invention permits transfer of vanadium and nickel from a hydrocarbon into an aqueous phase with little or no hydrocarbon phase undercarry into the aqueous phase. The composition is particularly useful in treating crude oil.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from the U.S. Provisional Patent Application having the Ser. No. 60 / 887,262; which was filed on Jan. 30, 2007, the contents of which are incorporated herein by reference in their entirety.FIELD OF THE INVENTION[0002]The present invention relates to a method for removing metals from hydrocarbons. The present invention particularly relates to removing vanadium and nickel from hydrocarbons.BACKGROUND OF THE INVENTION[0003]For the purposes of the present application, the terms “hydrocarbon” and “hydrocarbons” mean the large class of organic compounds containing primarily carbon and hydrogen that are produced from crude oil; from coal, lignite, tar sands, and the like; from recycled hydrocarbons; and from biological sources such as bio-diesel and the like; as well as from other alternative energy sources.[0004]The largest source of hydrocarbons currently used is crude oil. Crude oil is often contaminated with c...

Claims

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Application Information

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IPC IPC(8): C10G29/02
CPCC10G21/00C10G31/08C10G29/08
Inventor NGUYEN, TRAN M.WEERS, JERRY J.STARK, JOSEPH L.WILLIAMS, MARK RICHARD
Owner BAKER HUGHES INC
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