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, 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 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 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: 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: 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

Abstract: Process for the treatment of a hydrocarbon mixture that comprises hydrogen, in which the mixture is separated at pressure P1 into a liquid L1 and a gas G1 that is compressed under a pressure P2>2×P1; compressed gas G1** is then brought into contact with at least a portion of L1 so as to recover a liquid L2 and a hydrogen-rich gas G2; at least one stabilized liquid and a light liquid stream LL comprising primarily LPG, of which at least a portion is reduced in pressure and mixed with gas G1 to facilitate its compression, are recovered by fractionation from G1** and/or from L2. The invention also relates to a process for reforming hydrocarbons with such an effluent treatment.

Abstract: Process for treatment of a hydrocarbon feedstock that comprises a hydrocarbon-containing liquid phase and hydrogen, in which the feedstock is separated under a pressure P1 into a liquid L1 and a gas G1, that is compressed and brought into contact with a portion of L1 under a pressure P2>2×P1 to recover a liquid L2 and a hydrogen-rich gas G2; L2 is fractionated to obtain a stabilized liquid L4a that is free of LPG and lighter products, a liquid stream of LPG, and a gas stream G4 that is recycled, and in which one of gas streams: recompressed G1 and G4 is in counter-current contact with an unstabilized liquid AL that is obtained from or extracted from L1 or L2, whereby this unstabilized liquid is supercooled by at least 10° C. below its bubble point at pressure P2.

Abstract: After passing into reaction section R, the hydrocarbon feedstock C mixed with hydrogen H is expanded in device D. The expansion is brought about by a single-phase turbine until a gas volume ratio of 5% is reached, then expansion is brought about in a two-phase turbine of the rotodynamic type.

Abstract: The natural gas flowing in through line 1 is cooled, then expanded in turbine T1. The liquid at the bottom of drum D2 is the liquefied natural gas. The gas at the top of drum D2 is compressed by compressor K1, then fed into the treating plant using a Fischer-Tropsch process to convert the natural gas to natural gas liquid.

Abstract: Process for the treatment of a hydrocarbon mixture that comprises hydrogen, in which the mixture is separated at pressure P1 into a liquid L1 and a gas G1 that is compressed under a pressure P2 >2×P1; compressed gas G1**is then brought into contact with at least a portion of L1 so as to recover a liquid L2 and a hydrogen-rich gas G2; at least one stabilized liquid and a light liquid stream LL comprising primarily LPG, of which at least a portion is reduced in pressure and mixed with gas G1 to facilitate its compression, are recovered by fractionation from G1** and/or from L2. The invention also relates to a process for reforming hydrocarbons with such an effluent treatment.

Abstract: The invention relates to a device for producing a hot gas by oxidation of an active material exhibiting an oxidized form and a reduced form by means of a simulated-rotation reactor.

Abstract: Process for treatment of a hydrocarbon feedstock that comprises a hydrocarbon-containing liquid phase and hydrogen, in which the feedstock is separated under a pressure P1 into a liquid L1 and a gas G1, that is compressed and brought into contact with a portion of L1 under a pressure P2>2×P1 to recover a liquid L2 and a hydrogen-rich gas G2; L2 is fractionated to obtain a stabilized liquid L4a that is free of LPG and lighter products, a liquid stream of LPG, and a gas stream G4 that is recycled, and in which one of gas streams: recompressed G1 and G4 is in counter-current contact with an unstabilized liquid AL that is obtained from or extracted from L1 or L2, whereby this unstabilized liquid is supercooled by at least 10° C. below its bubble point at pressure P2.

Abstract: The natural gas flowing in through line 1 is cooled, then expanded in turbine T1. The liquid at the bottom of drum D2 is the liquefied natural gas. The gas at the top of drum D2 is compressed by compressor K1, then fed into the treating plant using a Fischer-Tropsch process to convert the natural gas to natural gas liquid.

Abstract: After passing into reaction section R, the hydrocarbon feedstock C mixed with hydrogen H is expanded in device D. The expansion is brought about by a single-phase turbine until a gas volume ratio of 5% is reached, then expansion is brought about in a two-phase turbine of the rotodynamic type.

Abstract: In a process for dehydration/fractionation of a wet natural gas containing heavy constituents and light constituents, In the presence of methanol, aqueous liquid phases are combined and the resultant combined aqueous liquid phase contacted with the first part of the gas to be scrubbed, which carries along the major part of the methanol, which allows to collect practically pure water. Before this step, all or part of one or both of the aqueous liquid phases and/or all or part of the aqueous liquid phase from a washing zone is sent to a distillation stage where practically pure methanol is collected at the top and a methanol-depleted aqueous liquid phase is collected at the bottom prior to being sent back to the first stage or used for the washing stage.

Abstract: Process for dehydrating/fractionating a low-pressure wet natural gas containing “heavy” constituents and “light” constituents includes a stage a) in which at least a fraction of the wet gas at temperature T0 is contacted with an aqueous liquid phase L'1 containing methanol, the gas carrying along substantially all of the methanol contained in phase L'1. In a stage b), the gas from stage (a) is cooled to a temperature T1 lower than temperature T0, producing a gas phase G1 at equilibrium with a hydrocarbon-containing liquid phase L1 containing C3+ and an aqueous liquid phase L'1 containing methanol. In stage c), phase L'1 is sent to stage (a), and in stage d), said phase G1 is fractionated by distillation carried out by continuous thermal exchange with a cooling fluid, so as to extract the “light” constituents (gas phase G2) and the “heavy” constituents (condensed phase L2).

Abstract: Natural gas liquefaction method wherein the natural gas is cooled, condensed and subcooled by indirect heat exchange with two cooling mixtures to a temperature such that the natural gas does not remain entirely liquid under pressure after expansion to the atmospheric pressure. The liquid natural gas under pressure is expanded to form a gas phase and a liquid phase. The gas phase can be either compressed and recycled to the process inlet, or used as a fuel. The liquid phase is expanded to form a gas phase and a liquid phase. The gas phase is compressed and recycled to the process inlet. The liquid phase constitutes the liquefied natural gas produced.

Abstract: Natural gas liquefaction method wherein the natural gas is cooled, condensed and subcooled by indirect heat exchange with two cooling mixtures to a temperature such that the natural gas does not remain entirely liquid under pressure after expansion to the atmospheric pressure. The liquid natural gas under pressure is expanded to form a gas phase and a liquid phase. The gas phase can be either compressed and recycled to the process inlet, or used as a fuel. The liquid phase is expanded to form a gas phase and a liquid phase. The gas phase is compressed and recycled to the process inlet. The liquid phase constitutes the liquefied natural gas produced.

Abstract: Process for catalytic conversion in the presence of hydrogen with regeneration of the catalyst that comprises a stage for reduction of said catalyst by the hydrogen that is obtained from the catalytic conversion stage, whereby this hydrogen is purified in advance of impurities that it contains by running it over adsorbent masses, whereby said adsorbent masses are regenerated by an increase in temperature that is provided by the effluent from the reduction stage of the catalyst. Application to the processes for regenerative reforming or dehydrogenation of paraffins and naphthenes and most generally to any moving-bed process that operates in the presence of hydrogen.

Abstract: Process for dehydrating/fractionating a low-pressure wet natural gas containing <<heavy >> constituents and <<light >> constituents, wherein: