Abstract: The combustion device according to the invention produces gases containing CO2 and water vapor and comprises a circulating fluidized bed reaction chamber (1, 2), a separator (10, 20), heat recovery means of which a part is situated in a dense fluidized bed (12, 12a, 22), wherein the part located in the bed of the heat recovery system(s) is composed of catalyst tubes (120, 120a, 220) through which a gas mixture flows. The gas mixture is composed of natural gas and/or naphtha or refinery gas or two or more of these gases. The gas undergoes reformation which converts it into a synthesis gas containing hydrogen. The fact of the catalyst tubes being situated in the dense fluidized bed made up of ashes from the combustion allows the catalyst to be reheated in a homogenous manner and the reforming reaction of the natural gas mixture to be stimulated.

Abstract: The invention relates to an oil-derived hydrocarbon converter comprising a catalytic cracking vessel (1) in the presence of catalyst particles in fluidized phase and a regenerator, for regenerating said catalyst particles by burning off the coke deposited on them, said catalyst circulating between said cracking vessel and said regenerator, said regenerator being a reactor (2) integrated into a combustion installation for steam generation comprising carbon dioxide capture.

Abstract: The invention relates to a circulating fluidized bed device provided with an oxygen-fired furnace (1), a separator (2) for separating gas and solid particles, a return circuit for returning solids to the furnace (3), and an outlet duct (4) leaving the separator and conveying gases to a heat-recovery boiler, the device being characterized in that it includes injector means for injecting combustible) gas into the outlet from the separator 2), said combustible gas being propelled by recycled carbon dioxide into the residual vortex created at the outlet from the separator, so as to ensure intimate mixing takes place in the downstream duct (4) with the combustion flue gases, thereby reducing the oxygen content of said flue gases by residual combustion.

Abstract: The boiler of the invention has a circulating fluidized bed, uses solid fuels and the oxygen obtained by high temperature oxygen production membranes, and is characterized in that the membranes are placed in the bed. These membranes are, for example, of the OTM (Oxygen Transport Membranes) type. Since the membranes operate at over 700° C., their positioning in the outer bed is ideally selected because the temperature of the solids circulating in the outer bed is between 750 and 900° C. This is particularly remarkable because the operating temperature windows of the circulating fluidized bed coincide with the optimal temperature window of use of the membranes.

Abstract: A separator of solids for separating first and second solids, the diameter and density of the first solids being larger than the diameter and density of the second solids. A first substantially vertical internal baffle (2) forms a passage in the low portion of the separator and forms two compartments (1A, 1B) on the passage of the fluidized solids. The fluidization of each compartment is independently controlled by two fluidization gas inlets (3A, 3B) in order to obtain the desired velocity field for separating the first and second solids in the first compartment (1A) and discharging the second solids through a vent (8), as well as for transferring the first solids into the second compartment (1B).

Abstract: A plant for generating electricity includes a gas turbine, a compressor driven by the gas turbine, a reduction reactor configured to reduce metal oxides, fed with a fuel and having a first circulating fluidized bed, a first cyclone configured to separate the metal oxide solids, and feeding at least a portion of the metal oxide solids to the reduction reactor via a first connecting line, an oxidation reactor configured to oxidize the metal oxides having a second circulating fluidized bed and fed only with pressurized air from the compressor, and a second cyclone configured to separate the metal oxide solids and feeding at least a portion of the metal oxide solids to the oxidation reactor via a second connecting line.

Abstract: The invention relates to an oil-derived hydrocarbon converter comprising a catalytic cracking vessel (1) in the presence of catalyst particles in fluidized phase and a regenerator, for regenerating said catalyst particles by burning off the coke deposited on them, said catalyst circulating between said cracking vessel and said regenerator, said regenerator being a reactor (2) integrated into a combustion installation for steam generation comprising carbon dioxide capture.

Abstract: The invention relates to a fluidized-bed device (F1, F2) provided with a hearth (1, 23) equipped with gas mixture feeds called primary feeds, said gas mixture being enriched with oxygen, and said hearth (1, 23) being provided with a network of two types of primary feed nozzle, a first type of nozzle (B1, B?1) injecting a first gas mixture at a first level close to the hearth (1, 23) and a second type of nozzle (B2, B?2) injecting a second oxygen-enriched gas mixture at a second level above the first level. According to the invention, said second type of nozzle (B2, B?2) consists of a device for mixing oxygen with a second gas component and connected by its lower end to an oxygen feed (11A, 11A?) and to a feed of second gas component, and of a device for injecting this mixture into the combustion chamber.

Abstract: The invention relates to a circulating fluidized bed device provided with an oxygen-fired furnace (1) , a separator (2) for separating gas and solid particles, a return circuit for returning solids to the furnace (3), and an outlet duct (4) leaving the separator and conveying gases to a heat-recovery boiler, the device being characterized in that it includes injector means for injecting combustible) gas into the outlet from the separator 2), said combustible gas being propelled by recycled carbon dioxide into the residual vortex created at the outlet from the separator, so as to ensure intimate mixing takes place in the downstream duct (4) with the combustion flue gases, thereby reducing the oxygen content of said flue gases by residual combustion.

Abstract: A circulating fluidized bed reactor is provided that includes a reaction chamber having a vertical partition wall forming two independent subchambers that include a combustion subchamber and a cooling subchamber. A combustion fluidizing gas is provided to the combustion subchamber to maintain a circulating fluidized bed therein. At least one centrifugal separator receives flue gas from the combustion subchamber and separates particles from the flue gas. At least one external bed receives the particles from the at least one centrifugal separator and provides the particles to the combustion subchamber. An external bed fluidizing gas is provided to the external bed to fluidize the particles therein. The cooling subchamber cools the external bed fluidizing gas received from the external bed. A heat exchanger cage receives the flue gas from the centrifugal separator and the external bed fluidizing gas from the cooling subchamber.

Abstract: A plant for generating electricity includes a gas turbine, a compressor driven by the gas turbine, a reduction reactor configured to reduce metal oxides, fed with a fuel and having a first circulating fluidized bed, a first cyclone configured to separate the metal oxide solids, and feeding at least a portion of the metal oxide solids to the reduction reactor via a first connecting line, an oxidation reactor configured to oxidize the metal oxides having a second circulating fluidized bed and fed only with pressurized air from the compressor, and a second cyclone configured to separate the metal oxide solids and feeding at least a portion of the metal oxide solids to the oxidation reactor via a second connecting line.

Abstract: The combustion device according to the invention produces gases containing CO2 and water vapour and comprises a circulating fluidized bed reaction chamber (1, 2), a separator (10, 20), heat recovery means of which a part is situated in a dense fluidized bed (12, 12a, 22), wherein the part located in the bed of the heat recovery system(s) is composed of catalyst tubes (120, 120a, 220) through which a gas mixture flows. The gas mixture is composed of natural gas and/or naphtha or refinery gas or two or more of these gases. The gas undergoes reformation which converts it into a synthesis gas containing hydrogen. The fact of the catalyst tubes being situated in the dense fluidized bed made up of ashes from the combustion allows the catalyst to be reheated in a homogenous manner and the reforming reaction of the natural gas mixture to be stimulated.

Abstract: The invention relates to a fluidized-bed device (F1, F2) provided with a hearth (1, 23) equipped with gas mixture feeds called primary feeds, said gas mixture being enriched with oxygen, and said hearth (1, 23) being provided with a network of two types of primary feed nozzle, a first type of nozzle (B1, B?1) injecting a first gas mixture at a first level close to the hearth (1, 23) and a second type of nozzle (B2, B?2) injecting a second oxygen-enriched gas mixture at a second level above the first level. According to the invention, said second type of nozzle (B2, B?2) consists of a device for mixing oxygen with a second gas component and connected by its lower end to an oxygen feed (11A, 11A?) and to a feed of second gas component, and of a device for injecting this mixture into the combustion chamber.

Abstract: The boiler of the invention has a circulating fluidized bed, uses solid fuels and the oxygen obtained by high temperature oxygen production membranes, and is characterized in that the membranes are placed in the bed. These membranes are, for example, of the OTM (Oxygen Transport Membranes) type. Since the membranes operate at over 700° C., their positioning in the outer bed is ideally selected because the temperature of the solids circulating in the outer bed is between 750 and 900° C. This is particularly remarkable because the operating temperature windows of the circulating fluidized bed coincide with the optimal temperature window of use of the membranes.

Abstract: The invention relates to a circulating fluidized bed reactor designed to be fed with air and convertible to operate with an oxygen-rich mixture, comprising a reaction chamber (1) horizontally bounded by vertical walls, at least two centrifugal separators (2A, 2B) and a heat recovery element called a heat exchanger cage (3), a reactor also comprising means for introducing a fluidization gas into the reaction chamber using at least one wind box (4) placed under the reaction chamber, and for maintaining a circulating fluidized bed of particles in said chamber, means for transferring gas which must be dedusted from the chamber to the separators, means for discharging the particles separated from the separators and means for transferring the dust-free gases from the separators to the exchanger cage.

Abstract: A monitoring device for continuously monitoring the internal circulation flow-rate of solid particles in a circulating fluidized bed reactor including a bottom zone into which the fluidization gas is injected and a top zone surrounded by walls. The device includes a sampling tank for sampling internal circulation of solids, which tank is fixed against one of the walls of the reactor and is provided with a fluidization device. A removal pipe is provided for removing the solids from the tank and conveying them to a measuring device for measuring the flow-rate of the solids. A return pipe is provided for returning the solids from the measuring device to the inside of the reactor.

Abstract: A monitoring device for continuously monitoring the internal circulation flow-rate of solid particles in a circulating fluidized bed reactor including a bottom zone into which the fluidization gas is injected, and a top zone surrounded by walls. The device includes a sampling tank for sampling internal circulation solids, which tank is fixed against one of the walls of the reactor and is provided with a fluidization device. A removal pipe is provided for removing the solids from the tank and conveying them to a measuring device for measuring the flow-rate of the solids. A return pipe is provided for returning the solids from the measuring device to the inside of the reactor.