Institut Francais Du Pe'trole

Institute Francais Du Petrole

Institut Francais Du Petrole, Des Carburants Et Lubrifiants Et

Institut Francais Du Petrole, Des Carburants Et Lubrifiants

Institut Francaise Du Petrole, Des Carburants Et Lubrifiants

Institut Francais Du Petrole Des Carburants Et Lubricants Et Enterprise

Andre Deschamps

Claude Dezael

Sigismond Franckowiak

Henri Gruhier

Philippe Renault

Andre Sugier

Philippe Courty

Jean-Francois Le Page

Jean Cosyns

Serge Leporq

Eric Robert

Alexandre Rojey

Gerard Paul Hotier

Christine Travers

Ari Minkkinen

Alain Grehier

Jean Morlec

Michel Roussel

Rene Avrillon

Alain Driancourt

Jean-Claude Mileo

Jean-Paul Cariou

Claude Roux-Guerraz

The invention concerns a process for deodorizing malodorous gaseous effluents from cooking equipment, particularly in restaurants and in the food industry, by washing with an aqueous solution comprising an alkaline or alkaline-earth salt of a dicarboxylic acid or a polycarboxylic acid, optionally associated with a surfactant and a diholoside.

Process and products for deodorising gaseous cooking effluents

The invention involves a process for the isomerization of C.sub.5 /C.sub.6 n-paraffins into isoparaffins comprising:

Process for isomerizing C.sub.5 /C.sub.6 normal paraffins with recycling

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 a tetravalent aromatic radical at least 50% by mole of which are represented by the following formula (II): ##STR2## and B represents a bivalent aromatic radical or a mixture of bivalent aromatic radicals.

Gas separation membrane

The invention concerns, on one hand, a new zeolitic catalytic composition which comprises a small-pore mordenite present in the form of needles, exchanged with at least one metal chosen from the group consisting of cooper, vanadium, tungsten, iron, colbalt and molybdenum, and on the other hand, use of this catalytic composition as a catalyst for the reduction of nitrogen oxides by ammonia.

Process and catalyst for selective reduction of nitrogen oxides

A mixture of at least two constituents A and B is submitted to selective separation across a selective membrane. The membrane comprises an active layer comprising particles of a selective solid (5) dispersed in a continuous non-porous and non-elastomeric polymer phase (4) and a porous support (6). The thickness of the active layer is less than 100 micrometers, advantageously less than 20 micrometers.

Process for separation of the constituents of a mixture in the gas phase

The invention relates to a process for removing sulfur oxides, particularly sulfur dioxide, contained in gases such as industrial fumes, characterized in that the gas is contacted with a solid absorbent containing magnesium oxide, in such conditions that sulfur oxides are fixed mainly as magnesium sulfate and then the used solid absorbent is contacted with a gas stream containing elemental sulfur in such conditions that magnesium oxide is regenerated with the production of an effluent of sulfur dioxide containing gas.

Process for removing sulfur oxides from a gas by means of an absorption

The invention relates to a process for removing sulfur oxides, particularly sulfur dioxide, contained in gases such as industrial fumes, characterized in that the gas is contacted with a solid absorbent containing magnesium oxide, in such conditions that sulfur oxides are fixed mainly as magnesium sulfate and then the used solid absorbent is contacted with a gas stream containing elemental sulfur in such conditions that magnesium oxide is regenerated with the production of an effluent of sulfur dioxide-containing gas.

The invention concerns a process for removing sulfur oxides and particularly sulfur dioxide contained in such gases as industrial fumes, wherein said gas is contacted with a solid absorbent containing magnesium oxide and at least one group VIII noble metal, in such conditions that the sulfur oxides are mainly fixed as magnesium sulfate, and then the used solid absorbent is regenerated by contact with a hydrogen sulfide-containing reducing gas.

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 that the hydropyrolysis step is performed in the presence of a solid supporting a carbon gasification catalyst circulating between the hydropyrolysis zone and the coke steam-gasification zone, said steam-gasification being performed in the absence of oxygen. The petroleum residue, hydrogen and steam are introduced respectively through lines 5, 6 and 7. The products are withdrawn through line 10. Heat may be supplied by the radiating tube 4.

Process for converting heavy petroleum residues to hydrogen and gaseous

A carbonaceous material is subjected, in admixture with a hydrogenated recycle oil, to hydrogenation in two successive steps at respective temperature ranges of 350.degree.-470.degree. C. and 600.degree.-1000.degree. C., under a pressure of at least 20 bars, the resulting product being separated into a carbonaceous solid residue, which is subsequently treated with oxygen and steam so as to obtain a hydrogen-containing reducing gas to be used in the second of the two hydrogenation steps, a fraction distilling in major part above 150.degree. C. which, after hydrogenation, forms the recycle oil admixed with the starting carbonaceous material, and a fraction containing the desired lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons, distilling in major part below 150.degree. C.

Process for converting a carbonaceous material to lower paraffinic

Process for hydrodesulfurizing and deoxygenating a gas (A) comprising methane, oxygen and at least one organic sulfur compound, said process comprising contacting a mixture of said gas (A) with a hydrogen-containing gas (B) first with a palladium-containing catalyst, at a temperature of 300.degree.-450.degree. C., and then with a second catalyst comprising molybdenum and at least one of nickel and cobalt, at a temperature of 300.degree.-450.degree. C.

Process for the hydrodesulfurization and deoxygenation of a gas

Process for hydrodesulfurizing a gas comprising together methane, at least one organic sulfur compound and oxygen, characterized by the step of passing a mixture of said gas with a hydrogen containing gas on a palladium catalyst at a temperature of 300.degree. to 450.degree. C. The gas usually comprises at least 2 mg/Nm.sup.3 of sulfur as organic sulfur and 0.05 to 2% by volume of oxygen.

Process for the hydrodesulfurization of natural gas containing organic

This process for converting a charge of heavy oils or petroleum residues to gaseous and distillable hydrocarbons comprises the steps of (a) admixing said charge with a first hydrogenated recycle oil obtained in a subsequent step of the process, heating the mixture to 350.degree.-450.degree. C., admixing it with a reducing gas at a temperature of at least 800.degree. C. and maintaining a temperature of 530.degree.-850.degree. C. and a pressure of at least 20 bars for 0.1 to 60 seconds (b) admixing the resultant product with a second hydrogenated recycle oil whose temperature is lower than 300.degree. C., thereby decreasing the temperature of the resultant mixture to less than 450.degree. C., then contacting it with a steam-hydrogen stream, thereby vaporizing at least 80% of the liquid to a gaseous phase (c) treating the unvaporized remaining fraction with oxygen and steam to form a reducing gas at a temperature of at least 800.degree. C., used at least partly in step (a), (d) hydrogenating the gaseous phase from step (b) and recovering therefrom a light fraction distilling below 250.degree. C., recycling at least partly the remaining gaseous phase to step (b) after removal of CO.sub.2 and H.sub.2 S therefrom and (e) recycling the remaining hydrogenated heavy oil fraction, distilling above 250.degree. C., to steps (a) and (b).

Process for converting heavy oils or petroleum residues to gaseous and

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 operating conditions being so selected as to avoid a substantial oxidation of said mass and said mass being periodically regenerated by heating to 200.degree.-300.degree. C. in the presence of oxygen, the regenerating conditions being such as to avoid a substantial oxidation of the carbon mass.

Process for purifying a hydrogen sulfide containing gas

A gas containing carbon oxysulfide or carbon disulfide is passed in admixture with oxygen through a catalyst formed of a carrier, vanadium oxide and silver, the proportion of iron oxide, if any, being lower than 1% by weight. The amount of vanadium oxide may be 0.5 to 10% by weight and that of silver 0.05 to 4% by weight.

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Noisy le Roi, France

Andre Deschamps