Compagnie De Raffinage Et De Distribution Total France

Total Raffinage Distribution S.a.

Institut Francais Du Pe'trole

C. Compagnie De Raffinage Et De Distribution

Compagnie De Raffinage Et De Distribution France

Jean-Louis Mauleon

Jean-Bernard Sigaud

Pedro Nascimento

Jean-Claude Courcelle

Francois Ville

Renaud Pontier

Frederic Hoffmann

Thierry Patureaux

Alain Milan

Mariano Del Pozo

Leonard Seglin

Daniel Barthod

Jacques Couillard

Bernard Chapotel

Charles Mengus

Cyrille Mirgain

Sigaud Jean-Bernard

Jean-Bernard Siguad

Michel Demar

Philippe Selem

Marie-Andree Senegas

Method for drying the charge from a unit that treats petroleum cuts with a low water charge

A procedure for the alkylation of isobutane by olefinic hydrocarbons, in which a first hydrocarbon charge ( ) rich in isobutane is put in contact with a second hydrocarbon charge rich in light olefins ( ), under conditions that will provoke the alkylation of the isobutane by the light olefins, the effluents that emanate from the reaction area in a fractionation column ( ) are treated in order to extract therefrom at least a first cut rich in alkylate ( ), a second cut rich in normal butane ( ) and a third cut rich in isobutane ( ), said third cut ( ) is then recycled at the entry of the alkylation reaction area. The second cut ( ) rich in normal butane is purified ( ) so as to lower its content in compounds with 5 or more carbon atoms to a value that is less than or equal to 5% by weight, the cut thus purified ( ) is treated in an isomerization reactor ( ) of normal butane to isobutane, this cut is then recycled ( ) at the entry of the alkylation effluents fractionation column ( ).

Procedure and device for the alkylation of isobutane by light olefins

The upstream portion of a reactor ( ), contains, between the feeding area of the catalyst flow and the injection area of the charge to be cracked, at least one solid and attached packing element ( ), that extends over all or part of the cross section of the reactor and consists of a network of cells through which pass the catalyst particles. This network makes it possible to create at least one step of division and recombination of the flow of catalyst particles, so as to redistribute the latter in a homogenous manner over the cross section of the reactor.

Fluid state catalytic cracking reactor having solid fastened packing element for homogeneously distributing particle flow

A receptacle ( ) open in its upper part into which opens a conduit ( ), is inserted between a device ( ) for fast extraction and the stripping zone ( ). The receptacle ( ) consists at its base of at least one diffuser ( ) fed in fluidization gas and to which the solid particles are put in a dense fluidized bed state ( ), whose density ranges between 300 and 800 kg.m , then escape by overflow from the receptacle ( ) toward the stripping zone ( ) located below.

Procedure and device for fast separation of solid particles and gaseous fluids and their use

Process and apparatus for stripping fluidized solid particles countercurrently with a stripping fluid. This apparatus comprises at least one packing structure consisting of at least one element the flow cross-section of which is essentially transverse to the chamber axis, said element extending over the entire cross-section of the chamber in the circulation zone and consisting of cells or pathways through which pass the particles and the stripping fluid, said cells or pathways orienting the circulation of the fluid and of the particles to be stripped in approximately radial fashion.

Process and apparatus for stripping fluidized solids and use thereof in

The present invention relates to a steam cracking process and apparatus which permits the conversion of fractions of petroleum hydrocarbons. The claimed invention provides for the conversion of at least one light hydrocarbon fraction, as well as a heavier hydrocarbon feedstock. The inventive process takes place at a high temperature and in the presence of a dilute fluidized phase of heat-transfer particles. The process comprises contacting the light-hydrocarbon feedstock and then the heavier feedstock, in a sequential manner with catalytic or noncatalytic heat-transfer particles in a continuous flow reactor. The process further provides for separating and stripping, to separate at least 90 percent of the particles which are regenerated before recycling. The process also provides for the separation of the effluent hydrocarbons which are quenched by cold feedstock and/or recycled residue (optionally supplemented by fresh particles) and thereafter recovered by fractionation distillation with at least a portion of the residue fraction being recycled to the downstream portion of the reactor.

Process and apparatus for the steam cracking of hydrocarbons in the

The invention relates to a process for the conversion of petroleum hydrocarbons in the presence of catalyst particles in a fluidized phase in an essentially upflow or downflow tubular reaction zone. The process includes at least one stage of steam cracking of at least one light hydrocarbon fraction and a stage of catalytic cracking of at least one heavy hydrocarbon fraction. The steam cracking is carried out by contacting the light hydrocarbons and a quantity of steam equal to at least 20 percent by weight in a fluidized bed of the catalyst particles, the resulting temperature ranging from 650.degree. to 850.degree. C. The catalytic cracking of the heavy hydrocarbons is carried out by injection of the effluents from the upstream section of the reaction zone into the catalyst suspension in such a way that the temperature of the mixture ranges from 500.degree. to 650.degree. C. and is then reduced to a temperature ranging 475.degree. to 550.degree. C.

Process and apparatus for fluidized-bed hydrocarbon conversion

The invention relates to a process for the conversion of petroleum hydrocarbons in the presence of catalyst particles in a fluidized phase in an essentially upflow or downflow tubular reaction zone, said process comprising at least one stage of steam cracking of at least one light hydrocarbon fraction and a stage of catalytic cracking of at least one heavy hydrocarbon fraction. The steam cracking is carried out by contacting the light hydrocarbons and a quantity of steam equal to at least 20 percent by weight in a fluidized bed of the catalyst particles, the resulting temperature ranging from 650.degree. to 850.degree. C. The catalytic cracking of the heavy hydrocarbons is carried out by contacting them with the effluents from the upstream section of the reaction zone and the catalyst suspension in such a way that the temperature of the mixture ranges from 500.degree. to 650.degree. C. and is then reduced to a temperature ranging from 475.degree. to 550.degree. C.

Process and apparatus for fluidized bed hydrocarbon conversion

The invention relates to an installation for the fluidized-bed cracking of a hydrocarbon feedstock. In accordance with the invention recycling of the regenerated catalyst particles to the intake of the reactor comprise, from upstream to downstream, a preferably substantially vertical pipe (1) for the discharge of the regenerated particles from the regenerator, and a substantially straight pipe (2) connected to the vertical pipe (1) and sloping downward therefrom to the base (3) of the reactor to which it is connected, the downward-sloping pipe (2) being connected to the vertical pipe (1) and to the base (3) of the reactor through inward-curved portions or elbows which impose neither a sharp change in direction on the course of the particles nor sudden changes in the diameter of the pipes.

Installation for the fluidized-bed catalytic cracking of a hydrocarbon

A catalyst regeneration process effected in an apparatus which comprises two regeneration chambers, a heat exchanger, means for withdrawing from the second chamber a controlled fraction of hot catalyst for the purpose of maintaining the temperature in that chamber substantially at a first desirable value of less than 950.degree. C., and preferably at 910.degree. C., means for transferring this fraction of hot catalyst to the heat exchanger for the purpose of cooling it, means for the discharge of the cooled catalyst from the heat exchanger and the reinjection of the cooled catalyst into the first chamber, and means, controlled by the means for measuring the temperature in the first chamber, for regulating the supply of combustion fluid to the first chamber for the purpose of maintaining said temperature substantially at a second desired value lower than 730.degree. C. and preferably ranging from 650.degree. to 710.degree. C.

Process for fluidized-bed catalyst regeneration

A process for the regeneration of a catalyst by combustion of the coke deposited thereon during a hydrocarbon conversion reaction in which process more than 50 percent of the coke is burned in at least one regeneration chamber operating with a fluidized bed, wherein the upper portion of the fluidized bed the suspension of catalyst particles in said chamber is slowed down due to a substantial increase in the diameter of the regeneration chamber so that the superficial velocity of the rising fluids which no longer contain any oxygen is reduced to a value ranging from 0.5 to 1.5 meters/second, that is, to a value corresponding to the fluidization conditions in a dense fluidized bed.

Fluidized-bed catalyst regeneration

A process is disclosed for the catalytic cracking of hydrocarbons in a fluidized bed wherein the catalyst particles are injected in a fully fluidized suspension into an elongate reaction zone. In accordance with the process, the feedstock to be cracked is injected in a state of small droplets less than 200 microns in diameter countercurrently to the flow of the fully fluidized suspension of catalyst particles.

Process for the catalytic cracking of hydrocarbons in a fluidized bed

The invention relates to a process and apparatus for catalytic cracking in a fluid phase of a hydrocarbon charge. The process comprises contacting, in ascending or descending flow, the charge and grains of a cracking catalyst in a tubular reactor, ballistically separating the spent catalyst and the cracked charge downstream of the end of said reactor, mixing spent catalyst with grains of at least partially regenerated catalyst having a temperature exceeding that of the grains of spent catalyst, stripping spent catalyst in a dense fluidized phase by means of a fluid injected counter-current into this catalyst regenerating the catalyst under conditions to effect combustion of coke deposited thereon, and recycling regenerated catalyst to feed the reactor.

Process and apparatus for the catalytic cracking of hydrocarbon charges

The invention relates to a sampling method and apparatus for a fluidized bed of particles in an enclosure, comprising a sampling riser pipe (4) that communicates with the enclosure (1) below the upper surface of the fluidized bed and forms an extension thereof and has a restriction (5) adapted to limit the sampling flow rate, and means (14, 15) provided for injecting a compressed gas at an adjustable flow rate into the pipe (4) between the enclosure (1) and the restriction (5) with a view to controlling, by appropriate regulation of the flow rate of the gas, the quantity of particles withdrawn.

System for the sampling in an enclosure of solid particles in a

The invention relates to a method and apparatus for injecting and conditioning regenerated catalyst particles at the base of a catalytic cracking reactor/elevator below the zone where the feedstock to be cracked is injected to give better uniformity of treatment and control of the effective C/O ratio. A first fluid is injected at a low rate into the reactor below the level where the catalyst particles coming from the regenerator are introduced so as to form a dense phase fluidized bed, and a second fluid is injected at a higher rate substantially above the zone where the catalyst particles coming from the regenerator enter so as to form a homogenized dilute phase fluidized bed of catalyst prior to subsequent contact with the feedstock to be treated.

Growing community of inventors

Marly le roi, France

Jean-Louis Mauleon