Exxonmobil Research and Engineering Company

Merichem Company

John N Begasse

Mark Alan Greaney

Daniel Paul Leta

Charles T Huang

Verlin Keith Turner

Binh N Le

Gordon Frederick Stuntz

Bihn N Le

The invention relates to a composition and method for treating liquid hydrocarbons in order to remove acidic impurities, such as mercaptans, particularly mercaptans having a molecular weight of about C(CHS=90 g/mole) and higher, such as recombinant mercaptans.

Composition and control method for treating hydrocarbon

The invention relates to a method for treating and upgrading a hydrocarbon containing acidic species such as mercaptans, comprising: (a) contacting the hydrocarbon, in the essential absence of oxygen, with a first phase of a treatment composition containing water, dissolved alkali metal hydroxide, cobalt phthalocyanine sulfonate, and dissolved alkylphenylates and having at least two phases, (i) the first phase containing water, alkali metal alkylphenylate, dissolved alkali metal hydroxide, and dissolved sulfonated cobalt phthalocyanine, and (ii) the second phase containing water and dissolved alkali metal hydroxide; and then (b) separating an upgraded hydrocarbon.

Continuous liquid hydrocarbon treatment method

The invention relates to a method for desulfurizing naphtha boiling-range hydrocarbons such as cracked naphtha. More particularly, the invention relates to hydrotreating the naphtha under selective hydrotreating conditions, and then removing mercaptans from the hydrotreater effluent using a caustic extractant.

Naphtha desulfurization method

The invention relates to a method for treating and upgrading a hydrocarbon containing acidic species such as mercaptans, comprising:

Liquid hydrocarbon treatment method

The invention relates to a method for treating naphtha, such as catalytically cracked naphtha, in order to remove acidic impurities, such as mercaptans. In particular, the invention relates to a method for mercaptans having a molecular weight of about C (C H S&equals;90 g/mole) and higher, such as recombinant mercaptans.

Continuous naphtha treatment method

An embodiment of the present invention is a method for isolating conducting polymer precursors by contacting a non-basic heterocyclic nitrogen containing hydrocarbon stream having a boiling point of from 232&deg; C. (450&deg; F.) to 566&deg; C. (1050&deg; F.) with an effective amount of a treating agent selected from the group consisting of alkylene and polyalkylene glycols and glycol ethers and mixtures thereof, having a molecular weight of less than 1000 and 1200, respectively, at conditions effective to maintain the reactants in a liquid phase to produce a first stream enriched in non-basic heterocyclic nitrogen containing hydrocarbon compounds and a second treated stream having a decreased non-basic heterocyclic nitrogen content. Optionally, an effective amount of a mineral acid may be added to the treating agent to enhance the process.

Method for isolating enriched source of conducting polymers precursors

An embodiment of the present invention is a method for isolating conducting polymer precursors by contacting a non-basic heterocyclic nitrogen containing hydrocarbon stream having a boiling point of from 232&deg; C. (450&deg; F.) to 566&deg; C. (1050&deg; F.) with an effective amount of a treating agent selected from monohydroxyl alcohols having a density at 25&deg; C. of less than 0.90 g/cm and mixtures thereof, at conditions effective to maintain the reactants in a liquid phase to produce a first stream enriched in non-basic heterocyclic nitrogen containing hydrocarbon compounds and a second treated stream having a decreased non-basic heterocyclic nitrogen content. Optionally, an effective amount of mineral acid may be added to the hydrocarbon stream to enhance the process.

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Livingston, NJ, United States of America

John N Begasse