Abstract: This invention has as its object a method for selective hydrogenation of a feedstock comprising a pyrolysis gasoline carried out in a three-phase reactor.

Abstract: This invention has as its object a method for selective hydrogenation of a feedstock comprising a pyrolysis gasoline carried out in a three-phase reactor.

Abstract: A process for the elimination of heavy metals, in particular mercury and possibly arsenic and lead, present in a gaseous or liquid effluent by means of a fixed bed process using an adsorbent in the form of monolithic or supported extrudates, said extrudates being characterized by a length h and a section comprising at least three lobes. The adsorbent is composed of at least one active phase based on sulphur in the elemental form or in the form of a metallic sulphide. The process is advantageously applicable to the treatment of gas of industrial origin, synthesis gas, natural gas, gas phase condensates and liquid hydrocarbon feeds.

Abstract: The present invention describes a thin layer fixed bed reactor intended for chemical treatments, in particular reduction of a Fischer-Tropsch synthesis catalyst. The reactor is designed in the form of similar, compact modules and operates with a ratio of linear pressure drop to outlet pressure which falls within certain limits.

Abstract: The present invention concerns the elimination of heavy metals, in particular mercury and possibly arsenic and lead, present in a gaseous or liquid effluent by means of a fixed bed process using an adsorbent in the form of monolithic or supported extrudates, said extrudates being characterized by a length h and a section comprising at least three lobes. The adsorbent is composed of at least one active phase based on sulphur in the elemental form or in the form of a metallic sulphide. The invention is advantageously applicable to the treatment of gas of industrial origin, synthesis gas, natural gas, gas phase condensates and liquid hydrocarbon feeds.

Abstract: The invention concerns a device for producing liquid hydrocarbons by Fischer-Tropsch synthesis on solid catalyst particles in a three-phase bed reactor, said device being equipped with at least one filter cartridge mounted in a filtering zone inside said reactor, said filter cartridge comprising: a filter for separating the filtrate of the solid catalyst particles, a cylindrical casing, and inner element having the shape of a hollow cylinder open at its ends and mounted substantially coaxial relative to the longitudinal axis of the casing, an annular chamber delimited by the casing and the walls of the inner element, said chamber being designed to collect the filtrate, and a discharge conduit for said filtrate, wherein the walls of the inner element of the filter cartridge are at least partly formed by the filter of the cartridge.

Abstract: The present invention describes a thin layer fixed bed reactor intended for chemical treatments, in particular reduction of a Fischer-Tropsch synthesis catalyst. The reactor is designed in the form of similar, compact modules and operates with a ratio of linear pressure drop to outlet pressure which falls within certain limits.

Abstract: This present invention describes a novel type of internal exchanger intended to carry out Fischer-Tropsch synthesis. This exchanger has a modular design and comprises a central tube with partitions allowing at the same time the supply of coolant to the hairpins of the module and the recovery of the partially vaporized fluid from these same hairpins.

Abstract: A process for the production of liquid hydrocarbons by the Fischer-Tropsch process comprises a step a) for generating a synthesis gas, a step b) for Fischer-Tropsch synthesis, a step c) for condensing the gaseous effluent obtained during step b), a step d) for separating the effluent condensed during step c) to obtain a gaseous effluent enriched in carbon monoxide and hydrogen, and a step e) for recycling at least a portion of the enriched gaseous effluent obtained during step d) to the Fischer-Tropsch synthesis step b), characterized in that: 1) two molar ratio of concentrations, A1 and A2, are determined between the hydrogen and the carbon monoxide (H2/Co), A1 being the value of said ratio in the supply to the synthesis step b), and A2 being the value of said ratio in any one of the gaseous effluents obtained during steps b) to e); 2) comparing ratios A1 and A2; and 3) adjusting the concentrations of hydrogen and/or carbon monoxide in the synthesis gas to keep the difference between the two ratios A1 and

Abstract: The present invention describes a novel type of internal exchanger for a gas-liquid-solid fluidized bed reactor employing a strongly thermal reaction. Said exchanger is modular in concept and comprises a central tube with separations allowing both supply of cooling fluid to the pins of the module and collection of partially vaporized fluid from said same pins.

Abstract: To facilitate operation of a facility for chemical conversion of a feed that comprises a reactor (2) containing a slurry constituted by at least one suspension of at least one solid in a liquid, a gas supply, and a circuit that is external of the reactor, for continuous movement of a slurry stream, wherein the external circuit withdraws slurry from the reactor from at least one point (A) and re-introduces at least a portion of the slurry at at least one other point (B), the facility is further provided with means for stopping circulation of the slurry in the circuit; means for pressurized introduction of at least one fluid for draining the slurry contained in the circuit; and means for circulating the slurry in the external circuit under conditions such that the Reynolds number is more than 2500.

Abstract: The invention relates to an apparatus for the production of liquid hydrocarbons by Fischer-Tropsch synthesis on solid catalyst particles in a three-phase bed reactor, the apparatus being provided with at least one filter cartridge mounted in a filtration zone in the interior of said reactor, the filter cartridge comprising: a filter intended to separate the filtrate from the solid catalyst particles, a cylindrical casing, an internal element in the form of a hollow cylinder open at its ends and mounted in substantially coaxial relationship with the longitudinal axis of the casing, an annular chamber delimited by the casing and the walls of the internal element, said chamber being intended to collect the filtrate, and a conduit for discharge of said filtrate, wherein the walls of the internal element of the filter cartridge are at least in part formed by the filter of the cartridge.

Abstract: A process for the production of liquid hydrocarbons by the Fischer-Tropsch process comprises a step a) for generating a synthesis gas, a step b) for Fischer-Tropsch synthesis, a step c) for condensing the gaseous effluent obtained during step b), a step d) for separating the effluent condensed during step c) to obtain a gaseous effluent enriched in carbon monoxide and hydrogen, and a step e) for recycling at least a portion of the enriched gaseous effluent obtained during step d) to the Fischer-Tropsch synthesis step b), characterized in that: 1) two molar ratio of concentrations, A1 and A2, are determined between the hydrogen and the carbon monoxide (H2/CO), A1 being the value of said ratio in the supply to the synthesis step b), and A2 being the value of said ratio in any one of the gaseous effluents obtained during steps b) to e); 2) comparing ratios A1 and A2; and 3) adjusting the concentrations of hydrogen and/or carbon monoxide in the synthesis gas to keep the difference between the two ratios A1 and A

Abstract: The present invention describes a novel type of internal exchanger for a gas-liquid-solid fluidized bed reactor employing a strongly thermal reaction. Said exchanger is modular in concept and comprises a central tube with separations allowing both supply of cooling fluid to the pins of the module and collection of partially vaporized fluid from said same pins.

Abstract: Installation for chemical conversion of a feedstock by Fischer-Tropsch reaction comprising a reactor that contains a slurry constituted by at least one suspension of at least one solid in a liquid, a gas feed, a circuit, external to the reactor, of continuous circulation of a stream of slurry, whereby said slurry is drawn off at least one point (A) and reintroduced at least in part at least one other point (B), a section for separation of at least one slurry fluid that passes through said external circuit, whereby said installation also comprises: means allowing to shut down the circulation of said slurry in said circuit, means for introducing under pressure at least one fluid for purging the slurry that is contained in the circuit, and means allowing the circulation of the slurry in said external circuit under conditions such that the Reynolds number is greater than 2,500.

Abstract: To facilitate operation of a facility for chemical conversion of a feed that comprises a reactor (2) containing a slurry constituted by at least one suspension of at least one solid in a liquid, a gas supply, and a circuit that is external of the reactor, for continuous movement of a slurry stream, wherein the external circuit withdraws slurry from the reactor from at least one point (A) and re-introduces at least a portion of the slurry at at least one other point (B), the facility is further provided with means for stopping circulation of the slurry in the circuit; means for pressurized introduction of at least one fluid for draining the slurry contained in the circuit; and means for circulating the slurry in the external circuit under conditions such that the Reynolds number is more than 2500.

Abstract: Process for synthesis of hydrocarbons by Fischer-Tropsch reaction starting from synthesis gas, operating in three-phase fluidization, the reactor having an exchanger immersed within the fluidized bed and using as coolant a fluid introduced at its boiling point at a pressure slightly greater than the pressure of the process, this boiling point being from 10 to 70° C. below the temperature of the process.

Abstract: Process for synthesis of hydrocarbons by Fischer-Tropsch reaction starting from synthesis gas, operating in three-phase fluidization, the reactor having an exchanger immersed within the fluidized bed and using as coolant a fluid introduced at its boiling point at a pressure slightly greater than the pressure of the process, this boiling point being from 10 to 70° C. below the temperature of the process.

Abstract: A facility for chemical conversion of a feed comprises a reactor (2) containing a slurry constituted by at least one suspension of at least one solid in a liquid, a gas supply, a circuit that is external of the reactor, for continuous movement of a slurry stream, said slurry being withdrawn from at least one point (A) and at least a portion of which is re-introduced into at least one other point (B), a section for separating at least one fluid from the slurry traversing said external circuit, said facility further comprising:

Abstract: A process for synthesising hydrocarbons by reacting a mixture comprising at least carbon monoxide and hydrogen in the presence of a catalyst is carried out in a three-phase reactor in which the liquid Peclet number is in the range 0 (excluded) to about 10, with a superficial gas velocity Ug that is preferably less than 35 cm.s−1, to encourage gas transfer into the liquid phase and avoid too much attrition of the catalyst grains.