1
Philippe Courty, Andre Deschamps, Sigismond Franckowiak, Andre Sugier: Process for purifying a gas containing hydrogen sulfide and contact masses usable therefor. Institut Francais du Petrole, Millen & White, May 9, 1978: US04088736 (87 worldwide citation)

A process for purifying a hydrogen sulfide containing gas, which comprises absorbing said hydrogen sulfide onto a mass comprising zinc oxide, alumina and a group II A metal oxide, a large proportion of the group II A metal oxide being in the form of aluminate or silicoaluminate; then regenerating th ...


2
Andre Deschamps, Claude Dezael, Sigismond Franckowiak: Process for converting heavy petroleum residues to hydrogen and gaseous distillable hydrocarbons. Institut Francais du Petrole, Millen & White, September 2, 1986: US04609456 (69 worldwide citation)

The invention concerns a process for converting heavy petroleum residues to hydrogen and to gaseous and distillable hydrocarbons, comprising the association of a step of hydropyrolysis (inside tube 3) with a step of catalytic steam-gasification of the formed coke (outside tube 3), characterized in t ...


3
Rene Avrillon, Andre Deschamps, Alain Driancourt, Jean Claude Mileo, Eric Robert: Gas separation membrane. Institut Francais du Petrole, Millen White & Zelano, December 10, 1991: US05071452 (60 worldwide citation)

Disclosed is a gas separation membrane, comprising a film with a thickness ranging from 0.05.10.sup.-6 to 20.10.sup.-6 m, at least 90% by mole of which is at least one aromatic polyimide or copolyimide, the recurrent unit of which corresponds to the following formula (I): ##STR1## where A represents ...


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Andre Sugier, Philippe Courty, Andre Deschamps, Henri Gruhier: Process for oxidizing sulfur and sulfur compounds. Institut Francais du Petrole, Millen & White, April 8, 1980: US04197277 (22 worldwide citation)

Sulfur and sulfur compounds contained in a gas are oxidized in contact with a catalyst comprising vanadium oxide, iron oxide and alumina, said catalyst having a surface higher than 30 m.sup.2 /g and being obtained by impregnation of aluminum with soluble vanadium and iron compounds.


6
Andre Deschamps, Claude Dezael, Sigismond Franckowiak, Henri Gruhier: Process for purifying a hydrogen sulfide containing gas. Institut Francais du Petrole, Millen & White, January 12, 1982: US04310497 (20 worldwide citation)

A process for purifying a gas containing hydrogen sulfide, wherein said gas is admixed with oxygen and contacted with a carbon mass of specific surface higher than 50 m2/g and containing at least one oxide and/or sulfate of iron and/or copper, at a temperature from 20.degree. to 170.degree. C., the ...


7
Claude Dezael, Andre Deschamps, Sigismond Franckowiak: Process for removing H.sub.2 S and CO.sub.2 from gases and regenerating the adsorbing solution. Institut Francais du Petrole, Millen & White, July 31, 1979: US04163043 (18 worldwide citation)

H.sub.2 S and CO.sub.2 from a waste gas are absorbed in an ammoniacal or alkali metal hydroxide solution. The resultant sodium, potassium or ammonium sulfide solution is reacted with pulverized copper oxide and the resultant copper sulfide precipitate is separated and the resultant solution of incre ...


8
Andre Deschamps, Sigismond Franckowiak, Andre Sugier: Process for purifying a hydrogen sulfide containing gas. Institut Francais du Petrole, Millen & White, February 17, 1981: US04251495 (17 worldwide citation)

Process for purifying a gas containing hydrogen sulfide, optionally with carbon dioxide, particularly adapted to the purification of gases of relatively low hydrogen sulfide content, e.g. not in excess of 1% of H.sub.2 S by volume, comprising contacting the gas with an absorption mass containing cop ...


9
Andre Deschamps, Claude Dezael, Sigismond Franckowiak, Henri Gruhier: Process for converting ammonium imidodisulfate, ammonium sulfamate and ammonium dithionate to sulfur dioxide and ammonia. Institut Francais du Petrole, Millen & White, September 2, 1980: US04220634 (16 worldwide citation)

Ammonium imidodisulfate and ammonium sulfamate may be converted to sulfur dioxide and ammonia by heating them with a reducing agent or a catalyst in a bath of molten ammonium sulfate and ammonium bisulfate. The reducing agent is sulfur or a sulfur compound and the catalyst is selected from Mo, W, Cu ...


10
Philippe Renault, Andre Deschamps, Sigismond Franckowiak, Claude Dezael: Process for purifying a sulfur dioxide containing gas. Institut Francais du Petrole, Millen & White, September 13, 1977: US04048293 (13 worldwide citation)

This process for purifying a sulfur dioxide containing gas, for example stack gas, comprises the steps of washing the gas with aqueous ammonia or ammonium sulfite, vaporizing sulfur dioxide and ammonia therefrom, reacting vaporized sulfur dioxide with hydrogen sulfide and recycling an ammonia contai ...