Institut Francais Du Pe'trole

Agip Petroli

Societe Anonyme Pipe Line Service

Jean-Paul Euzen

Roland Huin

Daniel Vuillemot

Quang Dang Vu

Jean-Francois Le Page

Christian R Busson

Yves Jacquin

Jacques Alagy

Pierre Galtier

Frederic Morel

Jean De Bonneville

Pierre Trambouze

Claude Pradel

Pierre Renard

Eric Benazzi

Alain Forestiere

Christian Marcilly

Patrick Chaumette

Bernard Torck

Gerard Leger

Henri Delhomme

Isabelle Harter

Stephane Kressmann

Jean-Francedillaois Joly

Pierre Amigues

Andre Buisson

Quang D Vu

Alain Convers

Hugo Van Landeghem, Deceased

Maurice Berthelin

Patrick Scemama

Remy Patoux

Didier Dall

Claude Dujardin

A chamber comprising a moving bed of solid particles, delimited by at least one screen with thickness e, circulating in a downward direction substantially parallel to the screen, the bed being traversed by at least one fluid flowing in the bed in a principal direction which is different to that of the ensemble of particles and leaving the bed by an outlet screen. In accordance with the invention, the chamber comprises at least one opening for introducing solid particles located above the bed and comprising at least one orifice for the flow of the particles, located at a distance of at least 0.6 e from the outlet screen. The chamber advantageously comprises at least two extraction openings, one extraction opening being located at a distance not more than 0.5 e from the outlet screen, and the other at a distance of at least 0.5 e from the outlet screen. The invention is applicable to catalytic reactors, in particular to catalytic reforming reactors.

Moving bed chamber with a regularized flow

Intensive hydrofining of petroleum fractions wherein an at least partly together with hydrogen circulate in a given direction, in at least one reactor containing at least one fixed bed of a hydrofining catalyst in solid form, is characterized in that the reactor is equipped with at least one inlet pipe for the mixture of the petroleum fraction and hydrogen and at least one outlet pipe for the resultant hydrofined petroleum fraction, and that at least one static mixer is positioned upstream from said outlet of the hydrofined petroleum fraction.

Intensive hydrofining of petroleum fractions

A process for the synthesis of essentially linear saturated C.sub.5.sup.+ hydrocarbons from a gas phase comprising synthesis gas is described. The process comprises circulation of an inert liquid phase and said gas phase in a reaction zone, in which the reaction zone is provided with at least one means for introducing gas and liquid phases, and at least one means for extracting the hydrocarbon phase formed by the Fischer-Tropsch reaction, and characterized in that the reaction zone comprises at least one mixing means. Preferably, at least one mixing means is a static mixer. An apparatus for carrying out the described process is also described.

Conversion of synthesis gas to hydrocarbons in the presence of a liquid

A process for the selective hydrogenation of a fraction of hydrocarbons containing 2 to 20 carbon atoms and comprising monounsaturated olefinic hydrocarbons and/or aromatic compounds and at least one polyunsaturated hydrocarbon from the group formed by acetylenic compounds and dienes, in which the hydrocarbon fraction, which is at least partially in the liquid phase, circulates with hydrogen in a given direction in a reactor containing at least one fixed bed of a hydrogenation catalyst in the form of a divided solid, characterized in that said reactor is provided with at least one inlet conduit for a fluid mixture comprising said hydrocarbon fraction and hydrogen and at least one outlet conduit for the hydrogenated hydrocarbon fraction, and in that it comprises at least one static mixer upstream of said outlet for the hydrogenated hydrocarbon fraction.

Selective hydrogenation of hydrocarbon cuts containing monounsaturated

An apparatus is provided for concentrating fine or broken particles to separate a particle stream into at least one stream which is concentrated in fine or broken particles and at least one stream with a reduced concentration of fine or broken particles. In addition to introduction and extraction structure, the apparatus includes at least two separator stages each comprising at least one funnel with an inclined or substantially vertical axis which opens upwardly, located beneath an inlet to collect the particles. The funnel is connected to at least one deflector which is directed downwardly to allow particles to flow under gravity and to form a bank of particles at the level of the funnel.

Apparatus for concentrating fine or broken particles

The invention concerns a rejuvenation process for a solid catalyst for the alkylation of at least one isoparaffin by at least one olefin. The process is characterised in that the catalyst is rejuvenated in the reaction zone by circulating an isoparaffin-rich liquid fraction over the bed, said fraction originating from a zone for separating the reaction effluent extracted from the reaction zone.

Rejuvenation process for a solid alkylation catalyst

An enclosure in which there circulates a moving bed of solid particles (for example a moving-bed catalytic reactor such as a reforming reactor), is delimited in the enclosure by at least one grill. In the enclosure a fluid passes through the bed in a direction different from that of the flow of the assembly of the particles and issues from the bed by way of at least one grill. Disposed in the thickness of said bed in an intermediate wall (grill) such as to distribute the thrust forces produced by the fluid on the particles in the zones of the bed which are delimited in that way. Jamming of the particles against the grill or grills is greatly reduced and the admissible fluid flow rate is then decreased.

Chambers of a moving bed

Process for the treatment of a hydrocarbon fraction containing metals and comprising the following stages: (a) the said hydrocarbon fraction is treated in the presence of mean density particles (d.sub.o) under conditions for eliminating at least partly the metals contained therein and deposits of said metals on at least one fraction of said solid particles; (b) at least part of the solid particles from stage (a), whose mean density is (d.sub.i) is drawn off; (c) said solid particles from stage (b) are magnetohydrostatically separated by introducing said solid particles into a ferrofluid placed in a non-uniform magnetic field and creating a vertical magnetic field, whose intensity is adjusted in such a way that the apparent mean density (d.sub.af) of the ferrofluid permits the separation of said solid particles into at least one mean density fraction (d.sub.i) below said apparent mean density (d.sub.af) of the ferrofluid and into at least one mean density fraction (d.sub.s) above said mean apparent density (d.sub.af) of the ferrofluid and above the mean density (d.sub.1) of the solid particles drawn off in stage (b); (b) at least one fraction of said mean density solid particles (d.sub.s) is recovered; and (e) recycling takes place to stage (a) of at least one fraction of said mean density solid particles (d.sub.i). The solid particles preferably comprise particles of a catalyst and the treatment is e.g. a hydrotreatment.

Process for the treatment of petroleum fractions containing metals, in

The invention provides an apparatus for carrying out chemical reactions, in the presence of at least one catalyst, in at least one reaction zone equipped with heat exchanger plates which make it possible to control the temperature of the zone. The apparatus mainly comprises a reactor, at least one central distributor manifold, a plurality of distributor manifolds, at least one central receiver manifold, a plurality of receiver manifolds and a plurality of continuous and elongate hollow plates, preferably substantially perpendicular. The hollow plates can contain adjacent channels having one of the following shapes: square, rectangular, triangular, sinusoidal.

Reactor with internal heat control by hollow heat exchanger plates

The invention relates to an apparatus for carrying out chemical reactions in the presence of at least one catalyst, in at least one reaction zone equipped with heat exchanger plates allowing the temperature of the zone to be controlled. The apparatus mainly comprises a reactor (1), at least one central distributing manifold (6.1a), a plurality of distributing manifolds (6.2a), at least one central receiving manifold (6.5a), a plurality of receiving manifolds (6.4a), a plurality of connecting manifolds (6.6a) and a plurality of hollow, continuous, elongate plates (6.3a), each divided into two hollow half panels (6.3, 1a and 6.3, 2a). The plates are preferably substantially parallelepipedic and may contain adjacent channels having one of the following forms: square, rectangular, triangular, or sinusoidal.

Reactor and reaction method with internal heat control by hollow heat

The invention relates to a process and to an apparatus for effecting chemical syntheses in gaseous phase, under pressure, in the presence of a solid catalyst, for instance for ammonia synthesis from hydrogen and nitrogen or for the synthesis of methanol or higher homolog alcohols from hydrogen and at least one carbon oxide. The reactor of substantially cylindrical shape contains a plurality of elongate compartments of parallelipiped shape, adjacent to each other, the adjacent walls of the compartments or the common walls of the adjacent compartments being gas-tight walls, said tight walls forming hollow plates wherein are provided channels for the flow of a fluid heat carrier flowing through said walls under a pressure substantially equal to the pressure to which are subjected the reaction gases.

Plate reactors for chemical syntheses under high pressure in gaseous

A process for converting liquid or semi-liquid hydrocarbon charges to lighter fractions comprises a first step (a) heating droplets jets of the charge introduced into a pyrolysis chamber by surrounding them with parallel jets of hot solid particles, of relatively large size, of a heat carrier material, not substantially in contact with the droplet jets, so as to maintain a temperature of 700.degree.-1600.degree. C., and introducing a gas so as to obtain a pressure from 1 to 150 bars. A second step involves (b) separating the gaseous fraction from the solid particles. Thereafter (c) at least a portion of the solid particles are heated and fed back to step (a). The gaseous fraction is (d) cooled by means of a cold gas so as to recover light hydrocarbons therefrom.

Process for converting liquid or semi-liquid hydrocarbon charges to

The invention concerns a process for withdrawing catalyst, particularly from a moving bed. The device is characterized in that fins (4) (see FIG. 1A), shaped as corner-plates, are arranged, on a plate (6) which supports the catalyst bed radially around each vertical duct for catalyst withdrawal, so that the flow of catalyst particles converges towards the withdrawing ducts. The apparatus is useful for example in hydroconversion reactions, particularly in hydrotreatments of heavy oil cuts.

Process for withdrawing catalyst particles from a reaction zone

The invention relates to a process and to an apparatus for effecting chemical syntheses in gaseous phase, under pressure, in the presence of a solid catalyst, for instance, for ammonia synthesis from hydrogen and nitrogen or for the synthesis of methanol or higher homolog alcohols from hydrogen and at least one carbon oxide. The reactor (8) of substantially cylindrical shape, (see FIG. 4) contains a plurality of elongate compartments (9) of parallelipiped shape, adjacent to each other, the adjacent walls of the compartments or the common walls of the adjacent compartments being gas-tight walls (1), said tight walls forming hollow plates wherein are provided channels for the flow of a fluid heat carrier flowing through said walls under a pressure substantially equal to the pressure to which are subjected the reaction gases.

Process for converting solid carbonaceous materials to methane, comprising (a) converting the carbonaceous material by means of a reducing gas at 300.degree.-500.degree. C. to a semi-oily phase adapted to be pumped and atomized, (b) heating falling droplets of said semi-oily phase to a temperature of 700.degree.-1600.degree. C. with hot solid particles in downward jets in the presence of reducing gas, under a presssure above 20 bars, (c) separating the solid particles of large size (d), heating them and feeding them back to step (b), (e) cooling the remaining fraction consisting of gas and solid particles of small size by means of a cold reducing gas and separating methane therefrom, and (f) treating the remaining solid phase of fine particles with oxygen and steam to produce a reducing gas fed back to steps (a) and (b).

Growing community of inventors

Dardilly, France

Jean-Paul Euzen