Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Selles, Serge Albert Pierre

Pierre Boucot

Alain Forestiere

Renaud Cadours

Pierre-Louis Carrette

Michel Maute

Jean-Charles Viltard

Patrick Chaumette

Jerome Weill

Paul Gateau

Philippe Courty

Jean-Alain Chodorge

Charles Bronner

Michel Thery

Alexandre Rojey

Vincent Coupard

Dominique Commereuc

Frederic Augier

Jean-Francois Joly

Florent Picard

Nathalie Marchal-George

Arnaud Baudot

Eric Lenglet

Patrick Briot

Gerard Hillion

Laurent Bournay

Pierre Galtier

Frederic Morel

Olivier Clause

Fran&ccedil;ois Hugues

Jean-Francedillaois Joly

Pascal Mougin

B&eacute;atrice Fischer

Reynald Bonneau

Yves Glaize

G&eacute;rard Henri Martin

Jean-Herve Le Gal

Jean Charles Viltard

Monique Prigent

Alexandre Gibert

Cecile Barrere-Tricca

Jean-Herv E Le Gal

Francedillaois Hughes

Olivler Clause

Serge Albert Pierre Selles

The method allows to incorporate an alcohol or a mixture of alcohols into fuels by minimizing the energy expenditure linked with the prior production of the alcohol or of the mixture of alcohols. One or more bases of the fuel, to which an oxygen-containing compound or a mixture of oxygen-containing compounds have possibly been added, are used to extract the alcohol or the alcohol mixture contained in aqueous solutions produced by biomass fermentation processes. After adjusting the temperature of the aqueous solution stream and of the stream containing one or more bases of the fuel through exchangers, these streams are fed into an extractor. The extract leaving the extractor is then dried and/or an oxygen-containing compound or a mixture of oxygen-containing compounds is added thereto. The raffinate leaving the extractor is sent to a water treating plant or recycled. The stream of dried fuel to which an oxygen-containing compound or a mixture of oxygen-containing compounds has possibly been added is sent to be stored. The water leaving the drying stage is sent to a water treating plant or recycled.

Method of incorporating alcohol into fuels having a high aromatic compound content

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

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 gaseous effluent flowing in through lineis contacted in absorption zone ZA with the liquid absorbent solution flowing in through lineThe gaseous effluent depleted in acid compounds is discharged through lineThe absorbent solution laden with acid compounds is discharged through lineThe absorbent solution once laden with acid compounds comprises two phases: a first phase poor in acid compounds and a second phase rich in acid compounds. The two phases are separated in zone ZS. The first phase is recycled through linesandto absorption zone ZA. The second phase is fed through lineinto regeneration zone ZR. In zone ZR, the acid compounds are separated from the absorbent solution. The acid compounds are discharged through lineThe regenerated absorbent solution is recycled through linesandto zone ZA.

Method of deacidizing a gas with a fractional regeneration absorbent solution

Process for desulfurization of an effluent for cracking or steam-cracking hydrocarbons, more particularly a gasoline for example for catalytic cracking that comprises the elimination of thiophenic compounds by alkylation of these compounds, followed by a distillation, a hydrocracking of said alkyl-thiophenic compounds, then a hydrodesulfurization of the effluent that is obtained from the hydrocracking zone. In a preferred embodiment, this process comprises a preliminary stage for separating the cracking or steam-cracking effluent into three fractions, and proposes sending to the alkylation stage only the intermediate fraction that is low in heavy basic nitrogen-containing compounds that are initially present in the effluents that are to be alkylated.

Integral method for desulphurization of a hydrocarbon cracking or stream cracking effluent

Alkyl esters of fatty acids, and high purity glycerin, are produced using a process comprising a set of transesterification reactions between a vegetable or animal oil and an aliphatic monoalcohol employing a heterogeneous catalyst, for example based on zinc aluminate, the water content in the reaction medium being controlled to a value that is below a given limiting value.

Process for producing alkyl esters from a vegetable or animal oil and an aliphatic monoalcohol

The present invention relates to a process for the production of electricity in a fuel cell from hydrocarbons that includes passing a cooled effluent in a first circuit having at least one filter for depositing soot in the filter. The filter is regenerated when concurrently passing the cooled effluent in a second circuit. The present invention also relates to a device for implementing the process.

Process and device for production of electricity in a fuel cell by oxidation of hydrocarbons followed by a filtration of particles

A process for the production of elemental sulphur by reacting hydrogen sulphide with sulphur dioxide in a liquid reaction medium comprising an organic solvent for the two compounds, e.g., ethylene glycol, and containing at least one soluble catalytic basic compound, e.g., sodium salicylate, comprises bringing a gas mixture containing sulphur dioxide and hydrogen sulphide into contact with a co-current of the solvent containing the catalytic basic compound.

Apparatus for purifying a gas containing hydrogen sulphide and sulphur dioxide

The present invention relates to a process for continuous metathesis or disproportionation of olefins, comprising at least 2 phases, a reaction phase a) carried out in a zone comprising at least one reactor containing at least one fixed bed of catalyst and a regeneration phase b) carried out in a zone comprising at least one reactor containing at least one fixed bed of catalyst, characterized in that at least one reactor passes from one phase to the other in alternation. In FIG.,, the feed containing olefins traverses reactor R,in riser mode. The feed to be treated containing olefins is introduced into reactor R,via line,. In this reactor, the olefins contained in the feed undergo metathesis or disproportionation, then the effluent leaves the circuit via line,. Simultaneously, reactor R,is placed in catalyst regeneration phase, the different regeneration gases are introduced into reactor R,via line,and leave this reactor via line,. Passage from the operating phase of a reactor to the catalyst regeneration phase thereof is carried out as follows: the reactor for which the catalyst is to be regenerated is isolated from the remainder of the apparatus, the hydrocarbons contained in the reactor are evacuated, then the reactor is purged. Said reactor is then connected to a regeneration loop and undergoes regeneration of its catalyst, and at the end of the regeneration phase, the reactor and the regeneration loop are purged.

Alternated process for olefin metathesis

The present invention relates to a process for the production of olefins from a hydrocarbon cut, comprising a step for separating at least one paraffin contained in the hydrocarbon cut, a step for dehydrogenating the paraffin and a step for purifying the hydrogen produced during dehydrogenation, at least a part of that hydrogen being recycled to the dehydrogenation step. The invention is of particular application to the preparation of olefins containing 3 to 5 carbon atoms per molecule from a C.sub.3 to C.sub.5 hydrocarbon cut containing at least one paraffin.

Process for synthesizing and purifying olefins comprising

Process for purifying a gas containing hydrogen sulphide and sulphur

The invention concerns a process for isomerising a feed containing essentially hydrocarbons, preferably paraffins containing principally 4 to 8, preferably princiapply to 6 and more principally 5 and/or 6 carbon atoms per molecule, comprising a fractionation zone and at least two isomersation reaction zones, said process comprising carrying out the following steps:

Paraffin isomerization process comprising fractionation having at least

The invention concerns a process for the separation of a mixture comprising ethylene, 1-butene, alpha-olefins containing at least 6 carbon atoms per molecule and possibly heavier hydrocarbon products, the ethylene content of the mixture being in the range 30% to 70% by weight, in which separation is effected in a distillation zone to obtain an overhead fraction comprising the major portion of the ethylene present in the mixture and between 0% and 100% by weight of the 1-butene present in the mixture, the process being characterized in that the zone is also supplied with supplemental 1-butene in an amount in the range 1 to 40 times the quantity (by weight) of 1-butene present in the mixture. In a preferred implementation of the process of the invention, the mixture originates form a homogenous liquid phase ethylene oligomerisation zone.

Process for the separation of alpha-olefins by distillation of an

The invention concerns a process for isomerizing a feed containing essentially hydrocarbons, preferably paraffins containing principally 4 to 8, preferably principally 4 to 6 and more preferably principally 5 and/or 6 carbon atoms per molecule, comprising a fractionation zone and at least two isomerization reaction zones, said process comprising carrying out the following steps:

Isomerization process comprising fractionation having at least two

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Ternay, France

Pierre Boucot