Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Institute Francais Du Petrole

Jean-Louis Ambrosino

Blaise Didillon

Jean-Charles Viltard

Christophe Boyer

Fabrice Giroudiere

Michel Thomas

Beatrice Fischer

Pierre Marache

Fabrice Lecomte

Ludovic Raynal

Jacques Cheron

Eric Lemaire

Choua Cohen

Eszter Toth

Sophie Jullian

Peter Meyer

Karine Surla

G&eacute;rald Witte

Gerald Witte

Valerie Wiss-Henrard

Alain Chansolme

Alexandre Rouey

Fabrice Giroudière

The present invention concerns a process for producing hydrogen from a hydrocarbon feed and steam, comprising:

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This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and water vapor comprising:

Process for the production of hydrogen with intermediate-pressure purging

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.

Installation for gas treatment by a liquid phase comprising

Installation and method for mixing and distributing a liquid phase and a gaseous phase

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 A. Part of the purified gas is heated in E, then fed into second enclosure Aso as to discharge the water adsorbed by the adsorbent material contained in this second enclosure. A steam-rich stream is fed into third enclosure Acontaining a mercaptan-laden adsorbent material. In A, the mercaptans are desorbed and replaced by the steam.

Method of purifying a natural gas by mercaptan adsorption

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.

Process for converting hydrocarbons by treatment in a distillation zone comprising extracting a hydrocarbon cut as a side stream, associated with a reaction zone, and its use for hydrogenating benzene

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 vapour distillate withdrawal level. This process can be used to reduce the benzene content in a hydrocarbon cut.

Process for converting hydrocarbons by treatment in a distillation zone comprising withdrawing a stabilized distillate, associated with a reaction zone, and its use for hydrogenating benzene

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. This process can be used to reduce the benzene content in a hydrocarbon cut.

Process for converting hydrocarbons by treatment in a distillation zone associated with a reaction zone, comprising re-contacting a vapor distillate with the feed, and its use for hydrogenating benzine

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 the portion of effluent re-introduced into the distillation zone is lower than that of the feed to the reaction zone drawn off at the height of a draw-off level located below the re-introduction level. This process can be used to reduce the benzene content in a hydrocarbon cut.

Process for converting hydrocarbons by treatment in a distillation zone comprising a circulating reflux, associated with a reaction zone, and its use for hydrogenating benzene

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 desorbent and the outlet from the adsorber 2 is connected to adsorber 3; a first pressurisation step 11 to an intermediate pressure wherein the bottoms of adsorbers 2 and 4 are connected together; and a second pressurisation step 12 wherein a stream providing a portion of the effluent from adsorber 1 is introduced into the bottom of adsorber 2.

Process for the separation of isoalkanes/n-alkanes by gas phase

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.

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Ternay, France

Jean-Louis Ambrosino