Ifp Energies Nouvelles

Total Research & Technology Feluy

P-Louis Carrette

Bruno Delfort

Florent Guillou

Julien Grandjean

Bertrand Guichard

Damien Delcroix

Abdelhakim Koudil

Sophie Drozdz

Nicolas Ferrando

Laurent Renaudot

The invention relates to a process for adding an organic compound to a porous solid wherein the porous solid and the organic compound in the liquid state are brought together simultaneously, without physical contact between the solid and the organic compound in the liquid state, at a temperature below the boiling point of the organic compound and under pressure and time conditions such that a fraction of said organic compound is transferred gaseously to the porous solid.

Method for adding an organic compound to a porous solid in the gaseous phase

A Fischer-Tropsch process for synthesizing hydrocarbons, by bringing a catalyst comprising a support and an active phase comprising a Group VIII metal into contact with a feedstock comprising synthesis gas, said catalyst being prepared according to the following steps:

Fischer-Tropsch synthesis process comprising a catalyst prepared by addition of an organic compound in gas phase

The invention has as its object a catalyst that comprises a substrate based on alumina or silica or silica-alumina, at least one element from group VIII, at least one element from group VIB, and at least one additive that is selected from among 2-acetylbutyrolactone and/or its hydrolysis products, 2-(2-hydroxyethyl)-3-oxobutanoic acid, and 3-hydroxy-2-(2-hydroxyethyl)-2-butenoic acid. The invention also relates to the method for preparation of said catalyst and its use in a method for hydrotreatment and/or hydrocracking.

Catalyst containing 2-acetylbutyrolactone and/or the hydrolysis products thereof, and use thereof in a hydrotreatment and/or hydrocracking process

The degradation of an absorbent solution comprising organic compounds provided with an amine function in aqueous solution is reduced considerably in the presence of a small amount of degradation-inhibiting additives belonging to the class of derivatives of pyrimidine or of triazine, at least one substituent of which contains a sulfur atom. The absorbent solution is employed for deacidifying a gaseous effluent.

Absorbent solution containing a breakdown inhibitor derived from pyrimidine or from triazine and absorption process for acid compounds contained in a gaseous effluent

The degradation of an absorbent solution comprising organic compounds with an amine functional group in aqueous solution is substantially reduced in the presence of a small amount of degradation inhibiting agents belonging to the family of derivatives of triazoles or of a tetrazole at least one substituent of which contains a sulfur atom. The absorbent solution is used to deacidize a gaseous effluent.

Absorbent solution containing a degradation inhibitor derived from a triazole or from a tetrazole and method of absorbing acid compounds contained in a gaseous effluent

The degradation of an absorbent solution comprising organic compounds provided with an amine function in aqueous solution is reduced considerably in the presence of a small amount of degradation inhibiting additives whose structure comprises a 5-atom heterocycle composed of a nitrogen atom, a sulfur atom or an oxygen atom, and 3 carbon atoms, at least one of which is joined to a sulfur atom not belonging to the ring. The absorbent solution is employed for deacidifying a gaseous effluent.

Absorbent solution containing a breakdown inhibitor derived from thiazole or from oxazole and absorption process for acid compounds contained in a gaseous effluent

The invention concerns a process for desulphurization of a gaseous effluent containing hydrogen sulphide using a Claus treatment unit followed by a Claus tail gas treatment unit (TGT), said process comprising using a device for on-line analysis of the ratio HS/SOat the outlet from the TGT unit and a feed-back loop which can maintain said HS/SOmolar ratio at the outlet from the TGT unit to a value close to 2 and generally in the range 1.5 to 2.5.

Process for desulphurization of a gaseous effluent comprising a device for on-line analysis and control

A process and apparatus for the treatment of a gas that contains hydrogen sulfide and sulfurous anhydride, in which: a) the gas () contacts with an organic solvent () containing a catalyst in a gas-liquid reactor-contactor () so as to recover separately liquid sulfur and; a gas effluent containing sulfur vapor; subjecting the gas effluent to a first condensation zone () operating at 70-100&#xb0; C. to deposit the sulfur in solid form on sufficiently cold walls of the equipment in zone (), recovering resultant purified gas containing less than 30 ppm by volume of sulfur melting the deposited solid sulfur to regenerate the equipment, and recycling resultant liquefied sulfur to the reactor contactor.

Growing community of inventors

Lyons, France

P-Louis Carrette