Institut Francais Du Pe'trole

Total Sa

Ifp Energies Nouvelles

Totalenergies Onetech

Brgm

Renaud Cadours

Fabrice Lecomte

Lionel Magna

Pierre Boucot

Pierre-Louis Carrette

Cécile Barrere-Tricca

Claire Weiss

Pascal Mougin

Alain Forestiere

Patrick Briot

Julia Magne-Drisch

Christophe Vallee

Sophie Drozdz

Alexandre Rojey

Bruno Delfort

Arnaud Baudot

Yves Charron

Eric Lemaire

Elsa Jolimaitre

Eszter Toth

Raphaël Huyghe

Catherine Leroi

Vasile Hulea

Serge Capdeville

Monique Prigent

Virenkumar Shah

Alexandre Gibert

Claudia Cammarano

Kamal Bouzalmata

Jing Zhao

The present invention relates to a method for the catalytic conversion in vapor phase of disulfide oil into methane and hydrogen sulfide, comprising the step of contacting disulfide oil, eventually in the presence of water, with a supported transition metal catalyst.

Catalytic conversion of DSO in presence of water

A process is disclosed for purifying a gaseous mixture containing acidic gases, such as a natural gas, including contacting the gaseous mixture with an absorbent solution including:

Process for purifying gaseous mixtures containing acidic gases

The disclosure relates to a process for treating a gas mixture containing carbon dioxide and hydrogen sulphide, including the following steps: deacidificating the gas mixture by bringing the gas mixture into contact with a first lean absorbent solution stream, delivering a deacidified gas mixture, and a first rich absorbent solution stream; regenerating the first rich absorbent solution stream, delivering the first lean absorbent solution stream and a sour gas stream; distillating the sour gas stream, delivering a first carbon-dioxide-rich stream and a hydrogen-sulphide-rich stream; purifying the first carbon-dioxide-rich stream by bringing the first carbon-dioxide-rich stream into contact with a second lean absorbent solution stream, delivering a second carbon-dioxide-rich stream and a second rich absorbent solution stream, the molar concentration of carbon dioxide in the second carbon-dioxide-rich stream being greater than the molar concentration of carbon dioxide in the first carbon-dioxide-rich stream. The disclosure also relates to an installation designed to implement this process.

Sour gas treatment process

An enhanced method of producing ethers from iso-olefins and alcohols comprises at least one stage of separation of the excess alcohol by an ionic liquid. The ether-hydrocarbon-alcohol effluent treated in said separation stage by the ionic liquid comes from the reaction section and/or from a fractionating column. The separated and condensed alcohol is recycled in the process.

Ether production method involving alcohol separation by an ionic liquid

A method of deacidizing a gaseous effluent comprising acid compounds where the gaseous effluent is contacted in Cwith an adsorbent solution so as to obtain a gaseous effluent depleted in acid compounds and an absorbent solution laden with acid compounds, the absorbent solution being selected for its property of forming two separable phases when it has absorbed an amount of acid compounds and when it is heated. The absorbent solution laden with acid compounds is then heated in Eand Eso as to separate two fractions: a first absorbent solution fraction depleted in acid compounds and a second absorbent solution fraction enriched in acid compounds. These two fractions are then separated in BS. The second fraction is regenerated in Cso as to release part of the acid compounds, and the first absorbent solution fraction and the regenerated absorbent solution are recycled as absorbent solution.

Method of deacidizing a gas by means of an absorbent solution with fractionated regeneration through heating

The present invention relates to a method of deacidizing a gaseous effluent, wherein the following stages are carried out:

Method of deacidizing a gas with a fractional regeneration absorbent solution with control of the water content of the solution

The liquid hydrocarbon stream including COS is introduced via lineinto membrane contactor CM to be placed in contact, through membrane M, with the aqueous alkanolamine solution arriving via lineThe COS contained in the hydrocarbon stream is absorbed by the aqueous alkanolamine solution. The liquid hydrocarbons from which the COS has been removed are evacuated from CM via lineThe aqueous solution containing COS is sent via lineto zone R to be regenerated. The compounds released during regeneration, particularly COS and COS-derived products, are evacuated from zone R via lineThe regenerated aqueous alkanolamine solution is recycled via lineinto membrane contactor CM.

Method for eliminating the carbonyl sulfide contained in a liquid hydrocarbon stream

The present invention relates to a method of removing acid gases, notably carbonyl sulfide, contained in gaseous effluents, comprising: The method can comprise a second aqueous solution regeneration stage. The regeneration stages are carried out by expansion and/or thermal regeneration.

Method of removing acid gases contained in gaseous effluents

The method allows to remove mercaptans contained in a gaseous feed comprising hydrocarbons by carrying out the following stages:

Mercaptan removal method

An enhanced ether production process from an olefinic cut containing at least one iso-olefin and from an alcohol comprises a stage of removal of the acetonitrile present in the hydrocarbon feed by liquid-liquid extraction, the extraction solvent being a non-aqueous ionic liquid of general formula QA, wherein Qis an ammonium, phosphonium and/or sulfonium cation, and Aan anion likely to form a liquid salt with said cation. Advantageously, the method according to the invention generally allows the amount of water at the etherification reactor inlet to be divided by at least two and thus the purity of the ether produced to be improved.

Acetonitrile removal from the olefinic feed of ether production processes using ionic liquids

The mercaptan-laden natural gas is contacted with a mercaptan-adsorbing sieve T. The mercaptan-rich gaseous effluent obtained upon regeneration of sieve Tis then contacted with an olefin-containing liquid feed in the presence of an acid catalyst. Under suitable conditions, the mercaptans are absorbed in the liquid feed and they react with the olefins so as to form solvent-soluble sulfides. A solvent regeneration stage allows the capture agent to be recycled.

Method of capturing mercaptans contained in a natural gas by concentration

A method of deacidizing a gaseous effluent including acid compounds includes the following stages: a) contacting the gaseous effluent with a first fraction of an absorbent solution containing reactive compounds with at least two amine functions, so as to obtain a gaseous effluent depleted in acid compounds and a liquid effluent laden with acid compounds, b) contacting the liquid effluent obtained in stage a) with a second fraction of absorbent solution laden with molecules more acid than the acid compounds, so as to cause formation of a first liquid phase depleted in acid compounds and a second liquid phase enriched in acid compounds and laden with more acid molecules, c) separating the first phase from the second phase, and d) regenerating the second phase so as to release a gas stream rich in acid compounds and a liquid stream poor in acid compounds and laden with more acid molecules.

Method of deacidizing a gas by partly neutralized multiamines

The method enables the antihydrate compounds contained in a condensed-hydrocarbon liquid feedstock arriving through pipeto be extracted. The liquid feedstock is brought into contact, in zone ZA, with a non-aqueous ionic liquid having the general formula QA, where Qdesignates an ammonium, phosphonium, and/or sulfonium cation, and Adesignates an anion able to form a liquid salt. The antihydrate compounds in the liquid hydrocarbon feedstock evacuated through pipeare eliminated. The ionic liquid charged with antihydrate compounds is evacuated through pipe, then introduced into evaporator DE to be heated in order to evaporate the antihydrate compounds. The regenerated ionic liquid is recycled through pipesandto zone ZA. The antihydrates are evacuated through pipe

Method for extracting an antihydrate contained in condensed hydrocarbons

The natural gas arriving through pipeis deacidified by being brought into contact with a solvent in column CThe solvent charged with acid compounds is regenerated in zone R. The purified gas evacuated by pipeincludes some of the solvent. The method enables the solvent contained in the purified gas to be extracted. In zone ZA, the purified gas is brought into contact with a non-aqueous ionic liquid whose general formula is QA, where Qdesignates an ammonium, phosphonium, and/or sulfonium cation, and Adesignates an anion able to form a liquid salt. The solvent-impoverished purified gas is evacuated through pipe. The ionic liquid charged with solvent is regenerated by heating in an evaporator DE. The solvents separated from the ionic liquid in evaporator DE are recycled.

Method for processing a natural gas with extraction of the solvent contained in the purified natural gas

The natural gas arriving through pipeis deacidified by being brought into contact with a solvent in zone C. The solvent charged with acid compounds is regenerated in zone R. The acid gases, released into pipeupon regeneration, include a quantity of solvent. The method enables the solvent contained in the acid gases to be extracted. In zone ZA, the acid gases are brought into contact with a non-aqueous ionic liquid whose general formula is QA, where Qdesignates an ammonium, phosphonium, and/or sulfonium cation, and Adesignates an anion able to form a liquid salt. The solvent is removed from the acid gases evacuated through pipe. The ionic liquid charged with solvent is regenerated by heating in an evaporator DE. The ionic liquid regenerated is recycled through pipesandto zone ZA. The solvent is evacuated through pipe

Growing community of inventors

Francheville, France

Renaud Cadours