Ifp Energies Nouvelles

Arkema France

Brgm

Julien Grandjean

Bruno Delfort

Dominique Le Pennec

Thierry Huard

Aurelie Wender

Ludivine Bouvier

Catherine Laroche

Cécile Lutz

Arnaud Baudot

Julia Magne-Drisch

Marc Jacquin

Renaud Cadours

Armelle Nigon

Abdelhakim Koudil

Christine Dalmazzone

P-Louis Carrette

Laetitia Giraudon

Nicolas Ferrando

Pierre-Louis Carrette

Pascal Mougin

Sophie Drozdz

Fabien Porcheron

Jean Kittel

Catherine Lefebvre

Francois Grosjean

Aurelie Mouret

Xavier Courtial

Sebastien Gonnard

Abdelkader Lettat

Marie Dehlinger

Aurélie Wender

Laurent Renaudot

Jean-Pierre Ballaguet

Alain Seron

Aurelie Mouret-Henriques

François Grosjean

Fabian Delorme

The present invention relates to a process for removing acid compounds contained in a gaseous effluent which consists in bringing a gaseous effluent into contact, in the absorption column, with an absorbent solution comprising water, between 20% and 28% by weight of pentamethyldipropylenetriamine and between 5% and 35% by weight of N-methyldiethanolamine.

Method for removing acid compounds from a gaseous effluent using a tertiary amine-based absorbent solution

Polyamines of formula (I), their preparation method and their use in an absorbing solution based on amines in order to selectively eliminate HS from a gaseous effluent containing HS and CO, which polyamines are obtained by a reaction between piperazine and an epihalohydrin or a 1,3-dihalo-2-propanol 

Polyamines, synthesis method thereof and use thereof for the selective elimination of H2S from a gaseous effluent comprising CO2

The invention relates to an absorbent solution and to a method using this solution for removing acid compounds contained in a gaseous effluent, comprising water and at least one diamine with general formula (I) as follows: 

Absorbent solution based on hydroxyl derivatives of 1,6-hexanediamine and method for eliminating acid compounds from a gaseous effluent

The present invention relates to zeolite adsorbents based on agglomerated zeolite X crystals comprising barium, potassium and sodium. These adsorbents find applications in the separation of aromatic C8 isomer fractions and especially xylene.

Zeolite adsorbents, preparation process therefor and uses thereof

The invention relates to a synthesis method for at least one nitrogen compound belonging to the family of partly N-hydroxyethylated tertiary 1,6-hexanediamines with general formula (I) as follows: wherein radicals R, R, Rare each selected indiscriminately among a methyl radical and a hydroxyethyl radical, and at least one radical among R, R, Ris a methyl radical,comprising at least a first reaction between a first halogen atom-free precursor compound and a second halogen atom-free precursor compound. The first precursor compound comprises a carbon skeleton consisting of a linear sequence of 6 carbon atoms with the 4 central carbon atoms bonded each to 2 hydrogen atoms and the carbon atoms in alpha and omega position not bonded to a halogen atom.

Method for synthesising partially N-hydroxyethylated tertiary 1,6-hexanediamines

The invention relates to novel nitrogen compounds belonging to the family of tertiary diamines of general formula (I) below, wherein R is an alkanediyl radical &#x2014;(CH)n- with n=2, 3, 4, 5 or 6. The compound according to the invention is for example N,N,N',N&#x2032;-(tetramethyl)-1,6-diamino-2,5-hexanediol or N,N,N&#x2032;,N&#x2032;-(tetramethyl)-1,8-diamino-2,7-octanediol. The invention also relates to the method for preparing them and to their use for removing acid compounds contained in a gaseous effluent.

Beta-hydroxylated tertiary diamines, a process for their synthesis and their use for eliminating acid compounds a gaseous effluent

The invention relates to an absorbent solution for absorbing acid compounds, such as hydrogen sulfide and carbon dioxide, in a gaseous effluent, containing water and a mixture of amines comprising 1,2-bis-(2-dimethylaminoethoxy)-ethane and 2-[2-(2-dimethylaminoethoxy)-ethoxy]-ethanol, of respective formulas (I) and (II) below, and to a method of removing acid compounds contained in a gaseous effluent using this solution. 

Absorbent solution containing a mixture of 1,2-bis-(2-dimethylaminoethoxy)-ethane and of 2-[2-(2-dimethylaminoethoxy)-ethoxy]-ethanol, and method of removing acid compounds from a gaseous effluent

The present invention relates to a zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type and comprising barium and/or potassium, in which the outer surface area of said zeolite-based adsorbent, measured by nitrogen adsorption, is between 20 m&#xb7;gand 100 m&#xb7;g, limits inclusive. The present invention also relates to the use of such a zeolite-based adsorbent as an adsorption agent, and also to the process for separating para-xylene from aromatic isomer fractions containing 8 carbon atoms.

Zeolite-based adsorbents based on LSX zeolite of controlled outer surface area, process for preparing them and uses thereof

An absorbent solution is provided for removing acid compounds contained in a gaseous effluent and a method of removing acid compounds contained in a gaseous effluent contacts the gaseous effluent with the absorbent solution. The absorbent solution includes at least one of the following two nitrogen compounds belonging to the family of tertiary diamines:  and water.

Absorbent solution based on beta-hydroxylated tertiary diamines and method of removing acid compounds from a gaseous effluent

The invention relates to a method of selectively removing hydrogen sulfide HS from a gaseous effluent comprising at least HS and CO, wherein a stage of selective absorption of hydrogen sulfide over COis carried out by contacting said effluent with a solution comprising (a) water and (b) at least the following diamine: and wherein the absorption selectivity is controlled by adding (c) a viscosifying compound to the absorbent solution.

Method for selective absorption of hydrogen sulfide from a gaseous effluent by a 1,2-bis(2-dimethylaminoethoxy)ethane-based absorbent solution comprising a viscosifying agent

The absorbent solution for removing acidic compounds contained in a gas effluent comprises water and at least one amine that is selected from among tertiary monoalkanolamines that contain an etheric function and belong to the 3-alcoxypropylamine family having general formula (A). The method for removing the acidic compounds contained in a gas effluent involves placing a gas effluentinto the column Ctogether with the absorbent solution

Absorbent tertiary monoalkanolamine solution belonging to the 3-alcoxypropylamine family, and method for removing acidic compounds contained in a gas effluent

The method for eliminating acidic compounds contained in a gaseous effluent consists of placing into contact, in column C, a gaseous effluentwith an absorbent solutioncomprising an aqueous solution of one or a plurality of dihydroxyalkylamines having one of the formulas (I) and (II).

Process for removing acidic compounds from a gaseous effluent with an absorbent solution based on dihydroxyalkylamines bearing severe steric hindrance of the nitrogen atom

The method of removing acid compounds contained in a gaseous effluent consists in contacting in column C1 a gaseous effluent with an absorbent solution 4 made up of an aqueous solution of one or more diamines belonging to the bis(amino-3-propyl)ether or (amino-2-ethyl)-(amino-3-propyl)ether family.

Method for eliminating acid compounds from a gaseous effluent with an absorbent solution made from bis(amino-3-propyl)ethers

The invention relates to an improved method for synthesizing bis[3-(N,N-dialkylamino)propyl]ethers from acrylonitrile, comprising the following reactions:

Method for synthesising bis[3-(N,N-dialkylamino)propyl]ethers

Acid compounds are removed from a gaseous effluent in an absorption method using an aqueous solution of N,N,N',N&#x2032;-tetramethylhexane-1,6-diamine formulated with a particular primary or secondary amine, allowing to obtain a single-phase absorbent solution under the absorption conditions of acid gases such as CO. The method is advantageously applied to the treatment of natural gas and of gas of industrial origin.

Absorbent solution based on N, N, N', N&#x2032;-tetramethylhexane-1,6-diamine and on a particular amine comprising primary or secondary amine functions and method for removing acid compounds from a gaseous effluent

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Lyons, France

Julien Grandjean