Institut Francais Du Pe'trole

Compagnie De Raffinage Et De Distribution Total France

Institut Francais Du P&eacute;trole

Frederic Hoffmann

Renaud Pontier

Regis Bonifay

Thierry Gauthier

Jean-Marie Deves

Jacques Corteville

Eric Sanchez

Pierre Galtier

Olivier Clause

Andre Pauc

Francois-Xavier Brunet

Jean-Louis Mauleon

Emmanuelle Bromet

Michel Thery

Marianne Capelle

Francedillaois-Xavier Brunet

Jean-Bernard Siguad

The invention relates to a process for the production of aromatic compounds from a hydrocarbon fraction with a catalyst the preferably circulates in a moving bed. In the process, a hydrocarbon feedstock that is treated by a hydrogen-rich gas is transformed. In a particular embodiment, regenerative reforming is conducted, such as for production of BTX (butene, toluene, xylenes) with continuous regeneration of the catalyst. The invention also pertains to the related device for carrying out the process.

Process and device for the production of aromatic compounds including a reduction of the catalyst

A moving bed process for producing aromatic compounds comprises at least a first step in which principally naphthene dehydrogenation is carried out in the presence of hydrogen in a mole ratio (H ) /(HC), said step being followed by at least one subsequent step carried out at a mole ratio (H ) /(HC) , the process also comprising reducing the catalyst with hydrogen in a ratio (H ) /(HC). In accordance with the invention, (H ) /(HC)&plus;(H ) /(HC)&lE;(H ) /(HC) , (HC) representing the molar quantity of feed in the first step and (HC) that of the subsequent step, or (H ) /(HC)&plus;(H ) /(HC)>(H ) /HC , but where (H ) /(HC) is less than (H ) /(HC) . Particular application to reforming.

Process for the production of aromatic compounds in a moving bed including a reduction of the catalyst

The invention concerns a process and unit for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, the catalyst being in a moving bed, comprising combustion, oxychlorination and calcining steps, in which at least one chlorinating agent, at least one oxygen-containing gas, and water are introduced into the oxychlorination step such that the H.sub.2 O/HCl molar ratio is 1 to 50, the oxychlorination step being carried out in the presence of an oxychlorination gas containing less than 21% of oxygen and at least 50 ppm by weight of chlorine (based on HCl), and at a temperature of 350-600.degree. C., and in which the combustion step is carried out in at least two combustion zones, each zone being separated from the adjacent zones, and at least one gas charged with oxygen is introduced into each zone, the gases produced being extracted from each zone, and in which the severity of the operating conditions increases in the direction of flow of the catalyst.

Process and unit for regeneration of a catalyst for the production of

Thermal regulation process for a solid in a heat exchanger using

A catalyst, e.g., a cracking catalyst, and a part of the regeneration fumes are drawn off from the dense catalytic bed of a second regenerator (9) and are introduced by force of gravity into an external exchanger (21) at a junction point beneath the level of the dense bed of the second regenerator. The heat exchange takes place in the bottom part of the exchanger below the junction point. Between the bottom end of the exchanger and the region above the junction point a dense bed zone is formed at a level which is substantially at the height of the dense bed in the regenerator and a discharge zone (27), of suitable size, for the regeneration gases and fluidization gas. The gases and fumes from the exchanger are removed in the diluted fluidized phase from the second regenerator through a conduit (28), while the catalyst is recycled into the bed of the first regenerator through a conduit (34).

Heat exchange apparatus for solid particles for double regeneration in

The invention relates to a downflow fluid cracking process and apparatus, particularly suitable for use in the catalytic cracking of heavy hydrocarbon charges. More specifically, removal of at least partly regenerated catalyst, which must be recycled to the reactor 1 from a dense phase 17a contained in a regenerator 17, and the introduction of the catalyst into the upper part 3 of the reactor 1 takes place under conditions such that the density of the thus formed gas-solid suspension is between 80 and 500 kg/m.sup.3 prior to its contacting with the charge, which is introduced by the injectors 5.

Downflow fluid catalytic cracking process and apparatus

The invention relates to a downflow fluid cracking process and apparatus. More specifically, sampling takes place of the at least partly regenerated catalyst, which must be recycled to the reactor 1 from a dense phase 17a, contained in a regenerator 17 and the stage of introducing the catalyst into the upper part 3 of the reactor 1 takes place under conditions such that the density of the thus formed gas-solid suspension is between 80 and 500 kg/m.sup.3 prior to its contacting with the charge, which is introduced by the injectors 5.

A catalyst, e.g., a cracking catalyst, and a part of the regeneration fumes are drawn off from the dense catalytic bed of a second regenerator (9) and are introduced by force of gravity into an external exchanger (21) at a junction point beneath the level of the dense bed of the second regenerator. The heat exchange takes place in the bottom part of the exchanger below the junction point. Between the bottom end of the exchanger and the region above the junction point a dense bed zone is formed at a level which is substantially at the height of the dense bed in the regenerator and a discharge zone (27), of suitable size, for the regeneration gases and fluidization gas. The gases and fumes from the exchanger are removed in the diluted fluidized phase from the second regenerator through a conduit (28), while the catalyst is recycled in to the bed of the first regenerator through a conduit (34).

Process and heat exchange apparatus for solid particles for double

The invention relates to a method of and an apparatus for fluidised bed regeneration of a catalyst containing coke. The catalyst and some of the regeneration fumes are drawn off from the dense bed of a regenerator (1) and are introduced by gravity into an external exchanger at a junction point below the level of the dense bed of the regenerator. Heat exchange is carried out in the lower part of the exchanger (7) below the junction point. From the bottom end of the exchanger up to above the junction point a dense bed zone is created the level of which is established substantially at the height of the dense bed in the regenerator and a zone (15) of suitable size for the escape of regeneration gases and fluidisation gas. The gases and fumes are drawn off into the dilute fluidised phase (18) of the regenerator through a duct (17) while the catalyst is recycled to the dense bed of the regenerator through a different duct (25) from that in which the fluidisation air is circulating. Application to the regeneration of fluid bed cracking catalysts.

Method of heat exchange of solid particles for regeneration in catalytic

A process and apparatus for the heat regulation of fluidized or fluid catalyst beds are described, the apparatus having a fluid bed heat exchanger. According to the invention, a pulverulent solid is made to flow essentially from the base of an enclosure (1) into a heat exchanger (6) having an internal separating partition (22) which defines two elongated, adjacent compartments (23, 24) communicating at their lower part. In the compartment in which the pulverulent solid flows downwards, the fluidization speed or rate is between 0.1 cm to 2 m/s, whereas in the compartment wherein the pulverulent solid rises again into the heat exchanger (6), the fluidization speed is between 0.1 and 6 m/s. The invention can be used for refining reaction (e.g., catalytic reforming), for the regeneration of a fluidized bed catalytic cracking catalyst of a petroleum or oil charge, or for the combustion of coal.

Process for regulating or checking the thermal level of a pulverulent

A method and device for producing effluent contained in a submarine geological formation which enables a submarine transfer of a petroleum output over short and medium distances between, for example, a hydrocarbon deposit and a hydrocarbon processing platform located over a larger deposit developed previously. At least one wellhead of the wells in the geological formation is connected to a production line feeding into the processing platform, with a pumping module being provided in the form of a jet pump connecting the wellheads to the production line whereby the hydrocarbons are pumped from the outlets of the well heads to the processing zone by the jet pump.

Device for producing an effluent contained in a submarine geological

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 device for positioning a tool or instrument in a duct and recovering the tool or instrument therefrom by causing a vector fluid to flow through the device. The device includes a tubular element adapted to be connected to the tool or instrument and an annular sealing arrangement mounted on the tubular element for sealing the tubular element in the duct. The tubular element includes an arrangement for selecting a direction of movement of the tool or instrument which includes a closing device for cooperating with a resilient conjugate piece and a device for reversing a direction of movement of the closing device. The cooperation of the closing device with the resilient conjugate piece occurs in at least three states. In the first state, the fluid flows through the tubular element in a first direction; in the second state, the fluid flow is stopped in a direction opposite to the first direction of fluid flow; and, in the third state, the fluid is stopped in the first direction. The reversal device is adapted for holding the closure device either in the first and second state while excluding the third state, or in the third state.

Device for positioning a tool or instrument in a duct

An articulated jet pump is provided usable more particularly in TFL techniques for activating hydrocarbon or water-producing wells. The pump of the invention may be positioned in production tubing by travelling through this tubing as far as the chosen position and comprises a nozzle adapted for being fed with drive fluid, the nozzle having an outlet orifice which cooperates with a mixer-diffuser assembly placed in an extension of the nozzle. The pump is formed from at least two elements articulated together at the level of the mixer.

Growing community of inventors

Paris, France

Frederic Hoffmann