Abstract: The invention concerns a process for the neutralization of a catalytic system for the oligomerization of olefins, said catalytic system comprising at least one halogenated derivative, characterized in that the reaction effluent is brought into contact with at least one nitrile compound.

Abstract: A fuze for detecting an obstacle in proximity, an obstacle in proximity defined as being an obstacle exhibiting a minimum distance from the fuze, wherein the fuze comprises at least: an emission device emitting a light beam directed forward of the fuze; a reception device detecting the luminous fluxes in a cone directed forward of the fuze, the light beam and the cone having relative orientations such that they cross one another; a detection volume being the volume where the light beam crosses the cone so that when an obstacle is in the detection volume, the light emitted by the emission device is backscattered toward the detection device, an obstacle in proximity being detected by detecting the maximum of backscattered power, the reception cone is centered on the axis of the fuze.

Abstract: The invention relates to a system (100) for assisting with the diagnosis of the operating condition of at least one industrial rotary machine (M1, M2, M3), consisting of an industrial electric fan unit, or an industrial motorized pump unit including a pumping wheel, said diagnosis assistance system (100) including a base support (50) and a means (10) for receiving signals (S1, S2, S3) secured to the base mounting (50), the means (10) for receiving signals (S1, S2, S3) being designed such as to receive signals (S1, S2, S3) representing raw values (6) of at least one operating parameter of the rotary machine (M1, M2, M3), characterized in that the system (100) also includes a means (20) for interpreting the operating condition designed such as to automatically interpret the raw values (6) received and to generate a diagnosis (De) of the operating condition of the rotary machine (M1, M2, M3) in accordance with said raw values (6). The invention can be used in the field of rotary-machine maintenance.

Abstract: The present invention describes a process for the conversion of a heavy feed which can be used to improve the selectivity for middle distillate. The process employs a catalytic cracking unit followed by one or more units for the oligomerization of C2 to C9 olefins which can preferentially produce an additional cut termed the middle distillate. The light portion of the oligomerate produced which cannot be incorporated into the middle distillate cut is recycled to the FCC unit for cracking into light olefins which are returned to the oligomerization units as a supplement to the olefins of the feed in order to preferentially form heavy oligomerates which can be incorporated into the middle distillate cut.

Abstract: The invention concerns a process for the neutralization of a catalytic system for the oligomerization of olefins, said catalytic system comprising at least one halogenated derivative, characterized in that the reaction effluent is brought into contact with at least one nitrile compound.

Abstract: A process for the production of middle-distillate hydrocarbon-containing bases from a butanol feedstock, comprising: a) isomerizing dehydration of butanol feedstock; b) separating the water from butylenic effluent; c) purifying the organic liquid effluent from stage b); d) oligomerizing a feedstock that comprises at least a portion of the purified organic effluent from stage c), the entire effluent from stage g), and at least a portion of the light product from stage f); e) oligomerizing the first oligomerization effluent to produce a second oligomerization effluent; f) fractionating the second oligomerization effluent into at least three products: a light product mostly comprising C2 to C4 compounds, an intermediate product mostly comprising C5 to C9 compounds, and a middle distillate product mostly comprising compounds having at least 10 carbon atoms; g) oligomerizing at least a portion of the intermediate product, and h) hydrogenating at least a portion of the middle distillate product.

Abstract: A fuze for detecting an obstacle in proximity, an obstacle in proximity defined as being an obstacle exhibiting a minimum distance from the fuze, wherein the fuze comprises at least: an emission device emitting a light beam directed forward of the fuze; a reception device detecting the luminous fluxes in a cone directed forward of the fuze, the light beam and the cone having relative orientations such that they cross one another; a detection volume being the volume where the light beam crosses the cone so that when an obstacle is in the detection volume, the light emitted by the emission device is backscattered toward the detection device, an obstacle in proximity being detected by detecting the maximum of backscattered power, the reception cone is centered on the axis of the fuze.

Abstract: This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium alkylidene complex comprising a saturated or unsaturated, dissymmetrical N-heterocyclic carbene (NHC) ligand.

Abstract: The invention relates to a system (100) for assisting with the diagnosis of the operating condition of at least one industrial rotary machine (M1, M2, M3), consisting of an industrial electric fan unit, or an industrial motorised pump unit including a pumping wheel, said diagnosis assistance system (100) including a base support (50) and a means (10) for receiving signals (S1, S2, S3) secured to the base mounting (50), the means (10) for receiving signals (S1, S2, S3) being designed such as to receive signals (S1, S2, S3) representing raw values (6) of at least one operating parameter of the rotary machine (M1, M2, M3), characterised in that the system (100) also includes a means (20) for interpreting the operating condition designed such as to automatically interpret the raw values (6) received and to generate a diagnosis (De) of the operating condition of the rotary machine (M1, M2, M3) in accordance with said raw values (6). The invention can be used in the field of rotary-machine maintenance.

Abstract: The present invention describes a process for converting a heavy feed which is flexible for the production of propylene, gasoline and middle distillate. The process uses a catalytic cracking unit and a unit for the oligomerization of C4 to C9 olefins. The process of the invention includes selective hydrogenation of the unrefined gasoline cut obtained from the catalytic cracking unit and separation between a light gasoline cut and a heavy gasoline cut, the light gasoline being directed to the oligomerization unit.

Abstract: The invention relates to a process for the production of middle-distillate hydrocarbon-containing bases from a butanol feedstock, with said process comprising at least the following stages: a) isomerizing dehydration of butanol feedstock, b) separating the water from butylenic effluent, c) purifying the organic liquid effluent from stage b), d) oligomerizing of a feedstock that comprises at least a portion of the purified organic effluent from stage c), the entire effluent from stage g), and at least a portion of the light product from stage f), e) oligomerizing the first oligomerization effluent to produce a second oligomerization effluent, f) fractionating said second oligomerization effluent into at least three products: a light product that most comprises the C2 to C4 compounds, an intermediate product that mostly comprises the C5 to C9 compounds, and a middle distillate product that mostly comprises compounds having at least 10 carbon atoms, g) oligomerizing at least a portion of said intermediate pro

Abstract: The present invention relates to a method for the continuous production of hydrocarbons from synthesis gas in the presence of a catalyst comprising a synthesis step in which a synthesis gas is reacted in the presence of a catalyst in a Fischer-Tropsch synthesis reactor (4), characterised in that, at the same time as the synthesis step, the following successive steps are carried out: a) charging a catalyst precursor comprising cobalt oxide in a reduction reactor (2); b) reducing the catalyst precursor charged in step a) by placing it in contact with a reduction gas comprising hydrogen (H2) and/or carbon monoxide (CO); and c) introducing the catalyst reduced in step b) into the synthesis reactor (4).

Abstract: A method for continuous production of hydrocarbons from synthesis gas in the presence of a cobalt-based catalyst which comprises a step of providing synthesis gas from a source (1) of synthesis gas in a Fischer-Tropsch synthesis reactor (4). The method also includes the following steps: a) conditioning of the catalyst in reduced state in a conditioning reactor (2) by contact with a flow of reducing gas from a synthesis gas source supplying the synthesis reactor, the reducing conditioning gas comprising carbon monoxide (CO) or a mixture comprising hydrogen (H2) and carbon monoxide (CO), the H2/CO molar ratio of which is between 0.1 and 0.9, at a temperature between 200 and 500° C., and a total pressure between 0.1 and 5 MPa and under a gas flow between 1 and 20 NI/h/g of catalyst to be treated, b) supply of reduced catalyst conditioned in step a) to the synthesis reactor (4).

Abstract: This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium alkylidene complex comprising a saturated or unsaturated, dissymmetrical N-heterocyclic carbene (NHC) ligand.

Abstract: The invention relates to a process for the production of middle-distillate hydrocarbon-containing bases from a feedstock comprising butanol and pentanol, with said process comprising at least: a) Isomerizing dehydration of said feedstock; b) Separation of the water that is present in said olefinic effluent; c) Purification of the organic liquid effluent coming from b); d) Selective oligomerization of a feedstock that comprises at least a portion of the purified organic effluent coming from c), to produce a first oligomerization effluent; e) Oligomerization of said first oligomerization effluent in such a way as to produce a second oligomerization effluent; f) Fractionation of said second oligomerization effluent into at least three products, a light product, an intermediate product and a distillate product; g) Oligomerization of at least a portion of said intermediate product; h) Hydrogenation of at least a portion of said distillate product.

Abstract: The device described in the present invention can separate fine solid particles in suspension in a viscous liquid, withdrawing a clear liquid from the top of the device, and a dense liquid charged with solid particles is withdrawn from the bottom. The invention also concerns the application of this device to the separation of catalyst particles in a liquid phase Fischer-Tropsch synthesis process.

Abstract: The present invention describes a process for the conversion of a heavy feed which can be used to improve the selectivity for middle distillate. The process employs a catalytic cracking unit followed by one or more units for the oligomerization of C2 to C9 olefins which can preferentially produce an additional cut termed the middle distillate. The light portion of the oligomerate produced which cannot be incorporated into the middle distillate cut is recycled to the FCC unit for cracking into light olefins which are returned to the oligomerization units as a supplement to the olefins of the feed in order to preferentially form heavy oligomerates which can be incorporated into the middle distillate cut.

Abstract: The invention concerns a method for optimizing the operation of a reaction section for hydrocarbon synthesis starting from a feed comprising synthesis gas, operated in the presence of a catalyst comprising cobalt. This method comprises the following steps: a) determining the theoretical molar ratio, PH2O:PH2, in the reaction section; b) optionally, adjusting the ratio PH2O:PH2 determined in step a) to a value strictly below 1; c) determining the new value for the theoretical ratio PH2O:PH2 in the reaction section; and repeating steps a) to c) until the ratio of the partial pressures of water and hydrogen, PH2O:PH2, has a value strictly less than 1.1.

Abstract: The invention concerns a method for optimizing the operation of a reaction section for hydrocarbon synthesis starting from a feed comprising synthesis gas, operated in the presence of a catalyst comprising cobalt. This method comprises the following steps: a) determining the theoretical molar ratio, PH2O:PH2, in the reaction section; b) optionally, adjusting the ratio PH2O:PH2 determined in step a) to a value strictly below 1; c) determining the new value for the theoretical ratio PH2O:PH2 in the reaction section; and repeating steps a) to c) until the ratio of the partial pressures of water and hydrogen, PH2O:PH2, has a value strictly less than 1.1.

Abstract: A catalyst applicable to the synthesis gas conversions especially E-T slurry processes, said catalyst comprising: a) a support containing at least a first aluminate element of mixed spinel structure of formula MxM?(1?x)Al2O4/Al2O3.SiO2, x ranging between and excluding 0 and 1, or of simple spinel structure of formula MAl2O4/Al2O3.SiO2, said support being calcined in an at least partly oxidizing atmosphere, at a temperature ranging between 850° C. and 900° C., and b) an active phase deposited on said support, which contains one or more group VIII metals, selected from among cobalt, nickel, ruthenium or iron. Said catalyst is used in a fixed bed or suspended in a three-phase reactor for hydrocarbon synthesis from a CO, H2 mixture.