Phillips Petroleum Company

Conocophillips Company

Jimmie J Straw

Earl Clark, Jr

Darryl R Fahey

Michael C Yu

Carlton Edwin Ash

Jon F Geibel

Howard F Efner

Owen H Decker

Lacey E Scoggins

Bruce W Gerhold

Fernando C Vidaurri

Harvey D Hensley

Ricky Eugene Snelling

Paul J Deslauriers

Peter Nelson Slater

Melvin D Herd

Wei-Teh W Shang

Albert G Holba

Rex L Robsein

Kent E Jeffers

Steven A Owen

A method and/or apparatus for efficiently operating a combustion device including at least one control zone, with each control zone including at least one burner assembly, is disclosed and includes a) individually supplying fuel to each of the burner assemblies in each of the control zones, b) individually measuring a separate combustion characteristic of the collective combusted gas from each of the burner assemblies in each of the control zones, and c) individually adjusting the flow of air to each of the burner assemblies in response to the value of the combustion characteristic corresponding to each of the control zones to keep the value of each separate combustion characteristic within a predetermined range. In a preferred embodiment, primary air and secondary air are separately supplied and controlled to each of the burner assemblies in each of the control zones in response to the value of the combustion characteristic corresponding to each of the control zones.

Method and apparatus for improving the efficiency of a combustion device

A process for removing sulfur dioxide in a fluid such as, for example, sulfolene or sulfolane, comprises circulating the fluid in a loop under conditions sufficient to effect the removal of sulfur dioxide from the fluid wherein the loop comprises at least one spraying device such as, for example, a spray nozzle.

Process for removing sulfur dioxide from fluids

A process is provided for producing a poly(arylene sulfide) polymer which employs at least one base as a reactant, wherein the base is contacted with the polymerization reaction mixture incrementally during the polymerization.

Process for preparing poly(arylene sulfide) polymers

A process for producing sulfolane compounds is provided which comprises: (1) contacting a conjugated diene with sulfur dioxide under conditions sufficient to synthesize a sulfolene compound whereby a mixture of the sulfolene compound and impurities comprising unreacted sulfur dioxide is produced; (2) transferring the mixture to an impurities removal vessel containing a freezing point depressant which comprises an aromatic compound; (3) removing the impurities; (4) transferring the impurities-reduced sulfolene compound to a hydrogenation reactor; (5) contacting the impurities-reduced sulfolene compound with hydrogen, in the presence of a hydrogenation catalyst, under conditions sufficient to produce a sulfolane compound; and (6) optionally recovering the sulfolane compound.

Process for producing sulfolane compounds

Poly(biphenylene sulfide/poly(phenylene sulfide) copolymers are produced by contacting a p-dihalobenzene and a bis-p-halobiphenyl under polymerization condiditons. Additionally a poly(biphenylene sulfide)/poly(phenylene sulfide) copolymer/fiber reinforced composite is provided.

Arylene sulfide copolymer

A process for producing sulfolane compounds is provided which comprises: (1) contacting a conjugated diene with sulfur dioxide under conditions sufficient to synthesize a sulfolene compound whereby a mixture of the sulfolene compound and impurities comprising unreacted sulfur dioxide is produced; (2) transferring the mixture, at a temperature in the range of about 55.degree. C. to about 85.degree. C., to an impurities removal reactor containing a solvent; (3) removing the impurities under an elevated pressure to produce an impurities-reduced sulfolene compound; (4) transferring the impurities-reduced sulfolene compound to a hydrogenation reactor; (5) contacting said impurities-reduced sulfolene compound with hydrogen, in the presence of a hydrogenation catalyst, under conditions sufficient to produce a sulfolane compound; and (6) optionally recovering said sulfolane compound.

A process for purifying a halogenated aromatic sulfone or ketone compound comprises contacting the compound with a mixture containing a solvent having a normal boiling point less than about 225.degree. C. and water to form a second mixture, heating the second mixture at a temperature sufficient to substantially dissolve the halogenated compound to form a third mixture, cooling the third mixture to purify and recrystallize the compound, and recovering the purified, recrystallized compound. A second embodiment of the invention comprises repeating the purification process steps at least once to further purify the halogenated aromatic sulfone or ketone compound.

Purification of halogenated aromatic sulfones or ketones

Poly(biphenylene sulfide/poly(phenylene sulfide) copolymers are produced by contacting a p-dihalobenzene and a bis-p-halobiphenyl under polymerization conditions. Additionally a poly(biphenylene sulfide)/poly(phenylene sulfide) copolymer/fiber reinforced composite is provided.

Preparation of poly (biphenylene/phenylene) sulfide

A process for purifying a halogenated aromatic sulfone or ketone compound comprising contacting the compound with a solvent having a normal boiling point less than about 225.degree. C. to form a mixture, heating the mixture to a temperature above the normal boiling point of the solvent in a closed system to form a solution, cooling the solution to recrystallize the compound, and recovering the compound. A second embodiment of the invention comprises repeating the purification process steps at least once to further purify the halogenated aromatic sulfone or ketone compound.

Growing community of inventors

Bartlesville, OK, United States of America

Jimmie J Straw