Abstract: This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and steam comprising: A stage for the production of a synthesis gas in a unit for the steam-reforming of the hydrocarbon feedstock, A stage for shift conversion with steam of the synthesis gas that is obtained in the preceding stage producing a hydrogen stream that contains methane and carbon dioxide, A stage for recovering carbon dioxide and methane, present in the stream that is obtained in the shift conversion stage, in the form of hydrates that produce a stream of pure hydrogen, A stage for regeneration of methane, A stage for recycling methane to steam reforming.

Abstract: This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and steam comprising: A stage for the production of a synthesis gas in a unit for the steam-reforming of the hydrocarbon feedstock, A stage for shift conversion with steam of the synthesis gas that is obtained in the preceding stage producing a hydrogen stream that contains methane and carbon dioxide, A stage for recovering carbon dioxide and methane, present in the stream that is obtained in the shift conversion stage, in the form of hydrates that produce a stream of pure hydrogen, A stage for regeneration of methane, A stage for recycling methane to steam reforming.

Abstract: The present invention describes a process for pre-treating a steam reforming feed containing sulphur-containing compounds, using two desulphurization reactors: a temporary desulphurization reactor (1010) containing an active adsorbent solid; a permanent desulphurization reactor (1003) placed upstream of the steam reforming unit, which contains an adsorbent solid in the passivated state, necessitating a depassivation phase in order to be rendered active; the temporary desulphurization reactor (1010) being disconnected as soon as the adsorbent solid of the permanent desulphurization reactor (1003) has been activated, and the volume of the temporary desulphurization reactor being in the range 1/20 to 1/200 times the volume of the permanent desulphurization reactor.

Abstract: The present invention describes an exchanger-reactor for carrying out endothermic reactions such as steam reforming oil cuts or alcohols integrating a steam generation bundle which can thereby increase the thermal efficiency.

Abstract: The invention relates to a method and a plant for removing the acid compounds contained in two gaseous effluents of different origins, comprising using a single amine-based absorbent solution circulating between a first absorber and a regenerator, and a second absorber and the same regenerator. The present invention advantageously applies for example to CO2 capture within a single plant intended for capture of the gaseous effluents produced upon hydrogen production through steam reforming of a gaseous hydrocarbon feed, such as combustion fumes and syngas.

Abstract: The invention concerns a system for exchanging heat by means of a loop in which a heat transfer fluid circulates, between a plurality of industrial and tertiary sites, each site possibly being a producer and/or consumer with the aim of reducing the energy factor on the district scale. The invention also concerns a method for pooling thermal energy on the district scale using a loop connecting at least one thermal energy consumer site and at least one thermal energy producer site, in which a heat transfer fluid circulates.

Abstract: A process for the production of highly thermally-integrated hydrogen by reforming a hydrocarbon feedstock wherein a stream of air or water, whose temperature is less by at least 200° C. than the combustion temperature inside a burner, is mixed with the effluent that is obtained from said burner, so as to reduce the temperature of this effluent to less than 725° C.; the mixture obtained is used to superheat at least one stream of water vapor and/or hydrocarbon feedstock in gaseous form, whereby said stream that is thus superheated by indirect heat exchange is injected directly into a reforming reactor where it is used as a fuel; and the second heat exchanger and is used to totally evaporate a stream of liquid water and/or hydrocarbon feedstock.

Abstract: The present invention describes a novel reactor adapted for carrying out chemical reactions at temperatures of up to 1600° C., and at pressures of up to 100 bars. The reactor of the invention has two vessels surrounding the reaction zone, an inner vessel constituted by a refractory material and an outer vessel surrounding the inner vessel and constituted by an insulating material.

Abstract: The present invention describes a novel exchanger-reactor intended to implement highly endothermic reactions such as natural gas or naphtha steam reforming, using in situ porous burners.

Abstract: The present invention concerns a process for producing hydrogen from a hydrocarbon feed and steam, comprising: a step for producing a synthesis gas in a unit for steam reforming the hydrocarbon feed in the presence of steam, with a fuel providing the heat necessary for the reaction; a step for steam converting synthesis gas obtained in the preceding step, producing a stream of hydrogen containing methane and carbon dioxide; a step for capturing carbon dioxide present in the stream obtained from the steam conversion step in order to separate the carbon dioxide from the stream of hydrogen; a step for capturing and recycling the methane and other impurities (CO, CO2) present in the stream of hydrogen to the steam reforming step.

Abstract: This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and water vapor comprising: A stage for the production of a synthetic gas in a vapor reforming unit of the hydrocarbon feedstock in the presence of water vapor, with a fuel that provides the heat that is necessary to the reaction, A stage for conversion to vapor of the synthetic gas that is obtained in the preceding stage producing a hydrogen stream that contains methane and carbon dioxide, A stage for recovering carbon dioxide that is present in the stream that is obtained in the stage for conversion to vapor, making it possible to separate the carbon dioxide from the hydrogen stream, A stage for recovery and recycling to the vapor reforming stage of impurities that are present in the hydrogen stream, comprising a decompression phase.

Abstract: The present invention describes a steam reforming furnace for the production of hydrogen, which employs a set of porous burners interposed between the tubes to be heated, improving compactness of the furnace.

Abstract: This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and water vapor comprising a stage in which a portion of the hydrocarbon feedstock is sent to a vapor-reforming unit and another portion of the hydrocarbon feedstock is sent directly to an autothermal reformer in a mixture with the effluent that is obtained from a vapor-reforming unit, a vapor-reforming stage of the hydrocarbon feedstock in a vapor-reforming unit, a stage for autothermal reforming of the stream that is obtained in the preceding stage as well as the hydrocarbon feedstock that is sent directly into an autothermal reformer, a vapor conversion stage of the synthesis gas that is obtained in the preceding stage, and a stage for recovering carbon dioxide that is present in the stream that is obtained in the vapor conversion stage.

Abstract: The present invention describes a vertical cylindrical exchanger-reactor for carrying out endothermic reactions, comprising a shell enclosing a plurality of tubes inside which the reactive fluid moves, said tubes being of the bayonet type, and the heat transfer fluid, in this case hot gases, being channeled inside chimneys surrounding said bayonet tubes. The bayonet tubes and the chimneys are suspended from the upper dome of the reactor. This reactor may operate with a pressure difference between the tube side and the shell of up to 100 bars. The hot gases are admitted into the reactor at temperatures of up to 1300° C.

Abstract: A device and method to load particles of catalyst on the order of cm in the principal dimension into an annular zone of reaction tubes which may reach a height of more than 10 meters, while satisfying the strict conditions of homogeneity and density of loading.

Abstract: The present invention describes a process for pre-treating a steam reforming feed containing sulphur-containing compounds, using two desulphurization reactors: a temporary desulphurization reactor (1010) containing an active adsorbent solid; a permanent desulphurization reactor (1003) placed upstream of the steam reforming unit, which contains an adsorbent solid in the passivated state, necessitating a depassivation phase in order to be rendered active; the temporary desulphurization reactor (1010) being disconnected as soon as the adsorbent solid of the permanent desulphurization reactor (1003) has been activated, and the volume of the temporary desulphurization reactor being in the range 1/20 to 1/200 times the volume of the permanent desulphurization reactor.

Abstract: The present invention describes a process for the production of hydrogen by steam reforming an oil cut using a hot vector gas, in which the steam produced by the process is used in its entirety in said process, a first portion of the steam being introduced as a mixture with the feed, and the second portion supplying the steam turbine driving the compressor for pressurizing the hot vector gas.

Abstract: The present invention describes an exchanger-reactor for carrying out endothermic reactions, comprising a shell inside which a heat transfer fluid moves, said shell enclosing a plurality of tubes inside which the reactant fluid moves, the tubes being of the bayonet type, and the reactor not having a tube plate. This reactor may operate with a pressure difference between the tube side and the shell side which may be up to 100 bars.

Abstract: The present invention describes an exchanger-reactor for carrying out endothermic reactions such as steam reforming oil cuts or alcohols integrating a steam generation bundle which can thereby increase the thermal efficiency.

Abstract: The invention concerns an exchanger-reactor (1) comprising: a vessel (2); means for distributing a feed through a fixed bed catalytic zone (10); means (6) for collecting effluent from the catalytic zone (10); means for heating the catalytic zone (10); in which said collection means (6) comprise conduits passing right through the catalytic zone (10), said conduits being distributed in the catalytic zone and interposed between the heating means, and in which the heating means of the catalytic zone are contained in sheaths (8) which are partially immersed in the catalytic zone (10), the sheaths (8) being open at one of their ends and closed at the other, the open end being fixed to an upper tube plate (21) defining the collection chamber (19) which is located above the catalytic zone (10), said heating means comprising at least one combustion zone (13) located close to the catalytic zone, means for supplying said combustion zone (13) with an oxidizing gas mixture (15) and with a gaseous fuel (17), and means