Ifp Energies Nouvelles

Thierry Huard

Julien Grandjean

Bruno Delfort

Aurelie Wender

Dominique Le Pennec

Armelle Nigon

Catherine Lefebvre

Laetitia Giraudon

Arnaud Baudot

Marc Jacquin

Michel Thomas

Fabien Porcheron

Jean Kittel

Francois Grosjean

Xavier Courtial

Aurelie Mouret

Nicolas Laloue

Karine Gaillard

Abdelkader Lettat

Aurélie Wender

Marie Dehlinger

Antoine Nicola

François Grosjean

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 invention concerns novel polyamines having formula (I) obtained from the reaction between a polyol diglycidylether and piperazine: in which n is a whole number between 0 and 30, Rhas different forms, Rhas formula (g), and Rhas formula (g) when n=0  The invention also concerns 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.

Polyamines, synthesis process thereof and use of same for the selective elimination of HS from a gaseous effluent comprising CO

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

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 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

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

The invention concerns a process for desulphurizing a feed comprising oxygen-containing compounds, hydrocarbon-containing compounds and organic sulphur-containing compounds, by capturing sulphur on a capture mass comprising iron oxides or zinc oxides and more than 20% by weight of zinc ferrite. The process is operated in the presence of hydrogen at a temperature in the range 200&#xb0; C. to 400&#xb0; C.

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Saint Symphorien D'Ozon, France

Thierry Huard