Texaco Inc.

International Business Machines Corporation

Farrokh Yaghmaie

Ronald J McKeon

Stephen R Vasconcellos

Mitri S Najjar

Louis S Sorell

Abraham Morduchowitz

Gregory J Earle

Parmesh K Bhalla

Edward P Gabriel

James E Basso

Paul E Howe

John J Chahine

Ronald J Mc Keon

Daro Diddell

An apparatus for cleaning and drying workpieces which comprises a closable chamber, means for introducing a cleaning solvent to the chamber, means for removing the solvent from the chamber, means for introducing an inert gas to the chamber, means for receiving workpieces and for moving the workpieces with respect to the level of the solvent, and means for transmitting megasonic energy with respect to the solvent.

Apparatus for cleaning and drying workpieces

A pumpable aqueous suspension of slag, fly-ash, char, and mixtures thereof which contains a surfactant and has a reduced viscosity and increased resistance to sedimentation. The aqueous suspension is produced by quench cooling and/or scrubbing a raw effluent gas stream from the partial oxidation of solid carbonaceous fuel. It may have a solids content of about 1.0 to 50.0 weight percent. The surfactant comprises an anionic or nonionic adduct of an alkyl phenol and polyoxyethylene or polyoxypropylene. In one embodiment, a solid carbonaceous fuel is wet ground with the aforesaid aqueous suspension and make-up water, if any, to produce a stable aqueous slurry feed to the partial oxidation gas generator.

Stable aqueous suspensions of slag, fly-ash and char

A pumpable slurry of solid carbonaceous fuel and water with reduced viscosity and increased resistance to sedimentation comprising about 50 to 75 weight percent of comminuted solid carbonaceous fuel having less than 10.0 weight percent of combined oxygen, about 0.1 to 10.0 weight percent of a surfactant comprising an anionic or nonionic adduct of a mono or dialkyl phenol and polyoxyethylene or polyoxypropylene, and the remainder of the slurry is water.

Stable slurries of solid carbonaceous fuel and water

Separation of clarified water and rapid settling of the particulate solids e.g. ash, slag, char and mixtures thereof from aqueous dispersions of quench cooling and/or scrubbing water as produced in the partial oxidation process for ash-containing solid carbonaceous fuels is effected by mixing with said dispersion a sulfonated product of humic acids and their salts and adjusting the pH of the mixture to a value in the range of about 2 to 6.

Process for separating clarified water from an aqueous dispersion of

Aqueous slurries of solid carbonaceous fuel that include a novel highly converted sulfonated surfactant derived from a suspension of low rank coal and coal derived creosote oil for reducing the viscosity and increasing the solids content of the aqueous slurry.

Aqueous slurries of solid carbonaceous fuel

The problem of creaming during formation of disperse-slurry of H-coal residue by ball milling with water is eliminated by use, as an anti-creaming additive, of the triethanolamine salt of dodecylbenzene sulfonic acid.

Formation of disperse-slurry of H-coal residue

A surfactant flooding system for enhanced oil recovery is disclosed which comprises sulfonated creosote oil, as well as a surfactant and solubilizer. The use of sulfonated creosote oil substantially lowers the viscosity of the surfactant system as well as improving the oil recovery efficiency of the system.

Surfactant flooding solutions with sulfonated creosote

Rapid precipitation of the particulate solids e.g. ash, slag, char and mixtures thereof in dilute dispersions of quench cooling and/or scrubbing water as produced in the partial oxidation process for ash-containing solid carbonaceous fuels is effected by mixing with said dispersion an anionic sulfonate surfactant and a water soluble divalent metal salt.

Process for separating a water dispersion of ash, slag and char

Coal-water slurries having high solids contents and improved pumpability containing a viscosity improving additive comprising a sulfonated product of humic acids.

Coal-water slurries of low viscosity and method for their preparation

A coal-water slurry having a high solids content and improved pumpability containing a viscosity improving amine additive from the group consisting of substituted 3-amino carboxylic acids, dialkanol alkyl amines or diamines is provided as well as a method of preparation.

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Wappingers Falls, NY, United States of America

Farrokh Yaghmaie