Institut Francais Du Pe'trole

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Procedes Petroliers Et Petrochimiques

Institute Francais Du Petrole

Institut Francais Du Petrole Procedes Petroliers Et Petrochimques Eric

Intitut Francals Du Petrole

Roland Huin

Eric Lenglet

Jean-Pierre Burzynski

Jean-Paul Euzen

Paul Broutin

Charles Bronner

Andre Vidal

Yves Gougne

Herve Cazor

Roger Boret

Quang Dang Vu

Daniel Vuillemot

Gilles Ferschneider

Dominique Humeau

Jean-Christophe Viguie

G&eacute;rard Courteheuse

Jacques Cholet

Jean De Bonneville

Bernard M Poussin

Pierre-Claude Layotte

Pierre Ham

Marianne Capelle

Gerard Courteheuse

Pierre Grolet

Jean-Paul LePage

Maurice Berthelin

Jean-Claude Barbier

A steam-cracking unit comprises at least one multitube quenching exchanger, equipped with a non-obstructive impact separator for preventing the erosion of the tubular input plate. The impact separator is at least 50% opaque when viewed from transfer pipe. It is arranged inside of an input cone in such a way that there is free passage of at least 40 mm between the periphery of the impact separator and the cone.

Steam cracking installation with means for protection against erosion

The device comprises at least one column,that is filled with a number of beds A,, whereby each bed A,is separated from the next bed A,by a fluid distributor plate P,. Each plate is divided into a number of sectors P,, and P,, and each sector comprises at least two fluid distribution chambers CH,and CH,. Each chamber of the plate is connected to a transfer line LT,and LT,to the outside. Transfer line LT,, which is associated with chambers CH,of a distributor plate, is connected to transfer line LT,, which is associated with chambers CH,of the same plate, via a bypass line L,. The latter comprises means,and,for controlling and adjusting the flow rate of fluid that circulates there, such that each distribution chamber CH,is flushed by a fluid that is obtained from chamber CH,and that has approximately the same composition as that of the fluid that circulates through distributor plate P,at each of the chambers.

Device for improving the purity of a product in a simulated moving bed that comprises forced fluid recirculation

A steam-cracking process includes the injection, at at least one point upstream from a secondary quenching indirect exchanger (,), of particles with a mean size of between 0.02 and 4 mm, at a velocity speed in the exchanger of 20 to 180 m/s, in sufficient quantity to limit the rise in the output temperature of the effluents from the exchanger to a value that is less than 100&deg; C. per month. At least 70% by weight of the quantity of injected particles is introduced downstream from primary quenching exchangers (,) and upstream from the inlet to the secondary quenching exchanger. At intervals, decoking of the pyrolysis pipes and primary quenching exchangers is carried out in the presence of air.

Method and device for steam cracking comprising the injection of particles upstream of a secondary quenching exchanger

Steam cracking installation and method with single controlled injection

The device comprises at least one column 1 that is filled with a number of beds A.sub.n, whereby each bed A.sub.i is separated from the next bed A.sub.i+1 by a fluid distributor plate P.sub.i. Each plate is divided into a number of sectors P.sub.10, and P.sub.11, and each sector comprises at least two fluid distribution chambers CH.sub.i and CH.sub.j. Each chamber of the plate is connected to a transfer line LT.sub.i and LT.sub.j to the outside. Transfer line LT.sub.i, which is associated with chambers CH.sub.i of a distributor plate, is connected to transfer line LT.sub.j, which is associated with chambers CH.sub.j of the same plate, via a bypass line L.sub.i,j. The latter comprises means 14, 15, 16, and 17 for controlling and adjusting the flow rate of fluid that circulates there, such that each distribution chamber CH.sub.i is flushed by a fluid that is obtained from chamber CH.sub.j and that has approximately the same composition as that of the fluid that circulates through distributor plate P.sub.i at each of the chambers.

Process and device for improving the purity of a product in a simulated

Injection or extraction device that comprises at least one injection or extraction rail 2 that is integral with a chamber 1 for injecting a fluid F2 into a zone Z1 or for extracting a fluid F1 from zone Z1 in which said fluid circulates, whereby the rail comprises at least one orifice 3 that makes it possible for fluid F2 to pass into zone Z1 or for said fluid F1 to be extracted from zone Z1 and that in front of each orifice comprises at least one means 5 for at least partial blocking of the orifice, whereby the means is located downstream or upstream from the rail in the direction of circulation of fluid F2 and that makes it possible for fluid F2 to pass into zone Z1 or for said fluid F1 to be extracted from zone Z1. Use of the device for monitoring the injection or extraction of a first fluid in the simultaneous presence of a second fluid that is different from the first fluid.

Device for discontinuous injection of a fluid F2 into a zone Z1 or

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

Flexible steam cracking process and corresponding steam cracking facility

Steam cracking method and plant using controlled injection of solid

Steam cracking process and facility comprising injection of powder which

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

A process for discharging solids from a vessel having at least three successive beds of solid particulate material with at least two of the beds being of different solid material than the other. The process comprises opening a lowermost closure and discharging the lowermost bed from the vessel while maintaining other closures in closed positions. After discharging the lowermost bed, opening the next-to-lowermost closure to permit the next-to-lowermost bed of solids to replace the lowermost bed, and repeating this operation up through all the beds without mixing of the beds, and discharging each bed separately from the vessel.

Enclosure containing several beds of solid material separated and

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 improved device for generating acoustic shear waves in the earth comprises a target member adapted to be coupled with the earth and provided with two lateral striking surfaces on which impinges a hammer pivotably mounted on a platform; the target member is connected through damping means to a cage supporting the platform, the hammer and its actuation means, said cage being displaceable with respect to the frame of a carrying vehicle between a position of contact with the earth of the target member and a lifted position thereof, the striking surfaces being inner walls of the target member.

Device for generating acoustic shear waves in the earth

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Montesson la Borde, France

Roland Huin