Abstract: The present invention describes a process for steam reforming natural gas, comprising a steam reforming exchanger-reactor (3000), a reactor for converting CO to CO2 (3100), and a PSA hydrogen purification unit (4300), with a view to producing a synthesis gas in which the heat necessary for the steam reforming reaction is supplied by a first combustion chamber (3100) connected to a second combustion chamber (3200) generating fumes in order to produce a very high degree of thermal integration.

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: 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 invention relates to a process for producing thermally-integrated hydrogen by reforming a hydrocarbon feedstock, in a reforming reactor, comprising a stage for maintaining the temperature of the effluent that is obtained from the reforming reactor by co-current heat exchange, in a co-current heat exchanger, between the effluent that is obtained from the reforming reactor and the hydrocarbon feedstock that it is desired to reform. The temperature of the synthetic gas exiting the feedstock-effluent exchanger is between 250° C. and 400° C.

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: This invention relates to a process for the production of electrical or mechanical energy and heat from a liquid fuel that comprises: A stage for producing a synthetic gas by vaporeforming in a vaporeforming unit (6), A stage for dehydrating synthetic gas by condensation of the water that is contained in the gas, A stage for transforming dehydrated synthetic gas into electrical energy and into heat, A stage for recycling unconverted synthetic gas to the synthetic gas transformation stage to a hydrogen burner (16) that supplies energy to the vaporeforming unit (6), A stage for recycling the condensed water that is obtained during the dehydration of the synthetic gas to the vaporeforming unit (6).

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: Installation for gas treatment by a liquid phase comprising a) a column (C) that comprises means (1) for introducing gas at one end of said column, means (9) for drawing off gas from the other end of column (C) and, from upstream to downstream in the direction of circulation of the liquid phase: a first internal (2) that comprises means for distribution of a liquid phase, a first bed (6) that comprises a packing or catalytic particles, a second internal (3) that comprises means for separating liquid/gas mixture (19, 20) that is obtained from first bed (6), first means (32, 4) for collecting and evacuating the separated liquid phase, means (100) for passing through internal (3) of the treated gas, and distribution means (31, 101) of a liquid phase with said gas, a second bed (8), second means (10) for collecting and evacuating the liquid phase at the lower outlet of column (C), b) Means for recycling the collected liquid phase.

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 raw natural gas is deacidized and dehydrated in units DA and DH. The treated gas is then purified by adsorption of the mercaptans in first enclosure A1. Part of the purified gas is heated in E1, then fed into second enclosure A2 so as to discharge the water adsorbed by the adsorbent material contained in this second enclosure. A steam-rich stream is fed into third enclosure A3 containing a mercaptan-laden adsorbent material. In A3, the mercaptans are desorbed and replaced by the steam.

Abstract: The raw natural gas is deacidized and dehydrated in units DA and DH. The treated gas is then purified by adsorption of the mercaptans in first enclosure A1. Part of the purified gas is heated in E1, then fed into second enclosure A2 so as to discharge the water adsorbed by the adsorbent material contained in this second enclosure. A steam-rich stream is fed into third enclosure A3 containing a mercaptan-laden adsorbent material. In A3, the mercaptans are desorbed and replaced by the steam.

Abstract: Installation for gas treatment by a liquid phase comprising a) a column (C) that comprises means (1) for introducing gas at one end of said column, means (9) for drawing off gas from the other end of column (C) and, from upstream to downstream in the direction of circulation of the liquid phase: a first internal (2) that comprises means for distribution of a liquid phase, a first bed (6) that comprises a packing or catalytic particles, a second internal (3) that comprises means for separating liquid/gas mixture (19, 20) that is obtained from first bed (6), first means (32, 4) for collecting and evacuating the separated liquid phase, means (100) for passing through internal (3) of the treated gas, and distribution means (31, 101) of a liquid phase with said gas, a second bed (8), second means (10) for collecting and evacuating the liquid phase at the lower outlet of column (C), b) Means for recycling the collected liquid phase.

Abstract: The invention provides a process for converting hydrocarbons in which said feed is treated in a distillation zone associated with a reaction zone, the feed for the reaction zone being drawn off at the height of at least one draw-off level, the effluent from the reaction zone being re-introduced into the distillation zone at the height of a re-introduction level, said process being characterized in that a liquid effluent is also withdrawn from the distillation zone at the height of a withdrawal level, said liquid effluent being treated in a gas-liquid side separation zone (splitter), the gaseous effluent being re-introduced into the distillation zone and the liquid effluent being recovered as an intermediate cut. This process can be used to reduce the benzene content of a hydrocarbon cut and to recover a naphtha cut.

Abstract: The invention provides a process for converting a hydrocarbon feed in which said feed is treated in a distillation zone producing an overhead vapour distillate and a bottom effluent, associated with an at least partially external reaction zone comprising at least one catalytic bed, in which at least one reaction for converting at least a portion of at least one hydrocarbon is carried out in the presence of a catalyst and a gas stream comprising hydrogen, the feed for the reaction zone being drawn off at the height of at least one draw-off level and representing at least a portion of the liquid flowing in the distillation zone, at least part of the effluent from the reaction zone being re-introduced into the distillation zone at the height of at least one re-introduction level, so as to ensure continuity of the distillation, said process being characterized in that a liquid distillate is withdrawn from the distillation zone at the height of at least one withdrawal level, said level being located below the vapo

Abstract: The invention concerns a process for converting a hydrocarbon feed in which said feed is treated in a distillation zone producing an overhead vapor distillate and a bottom effluent, associated with an at least partially external reaction zone comprising at least one catalytic bed, in which at least one reaction for converting at least a portion of at least one hydrocarbon is carried out in the presence of a catalyst and a gas stream comprising hydrogen, the feed for the reaction zone being drawn off at the height of at least one draw-off level and representing at least a portion of the liquid flowing in the distillation zone, at least part of the effluent from the reaction zone being re-introduced into the distillation zone at the height of at least one re-introduction level, so as to ensure continuity of the distillation, said process being characterized in that at least a portion of the vapor distillate is re-contacted with at least a portion of the feed introduced into the distillation zone.

Abstract: The invention provides a process for converting a hydrocarbon feed in which said feed is treated in a distillation zone producing a bottom effluent and a vapour distillate, associated with an at least partially external reaction zone comprising at least one catalytic bed, in which at least one reaction for converting at least a portion of at least one hydrocarbon is carried out in the presence of a catalyst and a gas stream comprising hydrogen, the feed for the reaction zone being drawn off at the height of at least one draw-off level and representing at least a portion of the liquid flowing in the distillation zone, at least part of the effluent from the reaction zone being re-introduced into the distillation zone at the height of at least one re-introduction level, so as to ensure continuity of the distillation, and so as to withdraw a distillate from the distillation zone and to recover a bottom effluent from the bottom of the distillation zone, said process being characterized in that the temperature of t

Abstract: Four adsorbers 1 to 4, each operating in a cycle comprising (described for adsorber 2): an adsorption step 1 wherein a feed from adsorber 2 is circulated to adsorber 2; an adsorption step 2 wherein feed is injected to the bottom of adsorber 2 and a product rich in isoparaffins is recovered from the head of adsorber 2; an adsorption step 3 wherein a portion of the fluid leaving adsorber 2 is sent to adsorber 3; an adsorption step 4 wherein the head of adsorber 2 receiving the feed is connected to the bottom of adsorber 3; a first depressurisation step 5 wherein adsorber 2 at high pressure is connected to adsorber 4 at a lower pressure; a second depressurisation step 6 wherein the head of adsorber 2 is closed; a stripping step 7 wherein the bottom of adsorber 2, which receives desorbent overhead, is connected to the top of adsorber 2; two principal stripping steps 8 and 9 wherein adsorber 2 alone is supplied with desorbent; a stripping finishing step 10 wherein adsorber 2 is continued to be supplied with desorb

Abstract: The invention concerns non-azeotropic fluid mixtures useful in compression thermodynamic cycles, for example in heat pumps, comprising R23, R142b and optionally a fluid (c) other than R23 or R142b, selected from the group formed of methane and ethane halogenated compounds having a boiling point from -85 to +60.degree. C., in such molar proportions that the R23/R142b ratio range from 0.01:1 to 1.10:1 and the (R23+R142b)/(R23+R142b +c) molar ratio from 0.26:1 to 1:1.The mixtures according to the invention can be used as working fluid for heat pumps whose fluid circulates through an evaporator (E.sub.1), a compressor (K.sub.1), a condenser (E.sub.2) and a pressure reducer (D.sub.1). The thermal exchanges take place respectively with external fluids (5,6) and (7,8).The mixtures according to the invention may supply heat to the condenser at a temperature from +50 to +100.degree. C. while having an internal pressure generally limited to 0.3 MPa.