Abstract: The invention relates to a process for treating heavy petroleum feedstocks for producing a gas oil fraction that has a sulfur content of less than 50 ppm and most often 10 ppm that includes the following stages: a) ebulliated-bed catalytic hydrocracking, b) separation from hydrogen sulfide of a distillate fraction that includes a gas oil fraction and a heavier fraction than the gas oil, c) hydrotreatment of said distillate fraction, and d) separation of a gas oil fraction with less than 50 ppm of sulfur. Make-up hydrogen, preferably all make-up hydrogen, is to stage c). Advantageously, the heavier fraction from step (b) is subjected to catalytic cracking. The invention also relates to an installation that can be used for implementing this process.

Abstract: Using ethanol as plasticizer for preparing subcutaneous implants containing a dispersed active principle in a PLGA-based matrix by means of extrusion, the extrusion temperature, generally higher than 75° C., can be reduced to temperatures higher than the Tg of the PLGA, but lower than the boiling point of ethanol and therefore less than 70° C. In this manner subcutaneous implants containing thermolabile active principles, for example proteins, can be prepared.

Abstract: A process for the production of very high quality base oils optionally with simultaneous production of high quality middle distillates comprises the stages for hydrotreatment, preferably hydrocracking, on Y or beta zeolite, and atmospheric distillation. The effluent is subjected to a catalytic dewaxing on the ZSM-48 catalyst. The process then comprises a hydrofinishing stage for hydrogenating the aromatic compounds, preferably on a catalyst that comprises at least one noble metal of group VIII, chlorine and fluorine, and the stages of atmospheric and vacuum distillation. The hydrofinishing stage is conducted at a temperature lower by 20-200° C. than the catalytic dewaxing stage.

Abstract: A process for transforming a gas oil cut from a conversion process or from an aromatic crude is described, the aim of the process being to improve the cetane number of said cut. The process comprises at least one hydrogenation step in which said gas oil cut is passed, in the presence of hydrogen, over a catalyst comprising an amorphous mineral support, at least one compound of a group VIB metal, at least one compound of a non noble group VIII metal and at least phosphorous or a compound of phosphorous, the process then comprising a hydrocracking step in which the hydrogenated feed is passed, in the presence of hydrogen, over a catalyst comprising an acidic support, at least one compound of a group VIB metal and at least one compound of a non noble group VIII metal.

Abstract: A process for transforming a gas oil cut from a conversion process or from an aromatic crude is described, the aim of the process being to improve the cetane number of said cut. The process comprises at least one hydrogenation step in which said gas oil cut is passed, in the presence of hydrogen, over a catalyst comprising an amorphous mineral support, at least one compound of a group VIB metal, at least one compound of a non noble group VIII metal and at least phosphorous or a compound of phosphorous, the process then comprising a hydrocracking step in which the hydrogenated feed is passed, in the presence of hydrogen, over a catalyst comprising an acidic support, at least one compound of a group VIB metal and at least one compound of a non noble group VIII metal.

Abstract: A process for producing oils with high viscosity indices from oil distillates or effluents from a conversion unit comprises the following steps: a) catalytic hydrotreatment of the feed in the presence of hydrogen and a non zeolitic catalyst; b) fractionation of at least a portion of the effluent from step a) or step d) described below to an oil residue; c) fractionation by thermal diffusion of at least a portion of the oil residue obtained from step b) into oil fractions with different compositions and viscosity indices. Step b) can be preceded by a step d) for hydrocracking the effluent obtained from step a) in the presence of hydrogen and a zeolitic catalyst.

Abstract: Process for transforming a gas-oil fraction that makes it possible to produce a fuel that has a quality according to stringent requirements in terms of sulfur content, aromatic compound content, cetane number, boiling point, T95, of 95% of the compounds and density, d15/4, at 15° C. This process comprises a hydrorefining stage and a hydrocracking stage, whereby the latter uses a catalyst that contains at least one zeolite. The conversion of products that have a boiling point of less than 150° C. is, throughout the two stages of hydrocracking and hydrorefining, less than 40% by weight and, for the hydrorefining stage, between 1 and 15% by weight. The temperature, TR2, of the hydrocracking stage is less than the temperature, TR1, of the hydrorefining stage, and the variation between temperatures TR1 and TR2 is between 0 and 80° C.

Abstract: The invention concerns a method for simultaneously producing very high quality oil bases and high quality middle distillates comprising successive steps of hydroisomerization and catalytic dewaxing. The hydroisomerization is carried out in the presence of a catalyst containing at least a noble metal deposited on an amorphous acid support, the metal dispersion being less than 20%. The support is preferably an amorphous silica-alumina. The catalytic dewaxing is carried out in the presence of a catalyst containing at least a hydro-dehydrogenating element (group VIII) and at least a molecular sieve selected among ZBM-30, EU-2 and EU 11.

Abstract: The invention concerns a process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which process the feed to be treated is brought into contact with a catalyst comprising an EU-1 zeolite and at least one hydro-dehydrogenating element, at a temperature which is in the range 170° C. to 500° C., a pressure in the range 1 to 250 bar and an hourly space velocity in the range 0.05 to 100 h−1, in the presence of hydrogen in a proportion of 50 to 2000 l/l of feed. The oils obtained have good pour points and high viscosity indices (VI). The process is also applicable to gas oils and other feeds requiring a reduction of pour point. The invention also concerns an EU-1 zeolite from which a portion of elements T (Al, Ga, Fe or B) have been removed and which has an Si/T atomic ratio of at least 10.

Abstract: The invention concerns an improved process for producing very high quality base stock and for simultaneously producing high quality middle distillates, comprising successive hydroisomerisation and catalytic dewaxing steps.

Abstract: The invention concerns a process for moderate pressure hydrocracking (i.e., at a hydrogen partial pressure of more than 70 bars and at most 100 bars) with a conversion of at least 80% by volume, of a feed with a T5 temperature in the range 250° C. to 400° C. and a T95 temperature of at most 470° C. (T5 and T95 measured in accordance with ASTM-D2887), to produce a diesel with a 95% distillation point of less than 360° C., a sulphur content of at most 50 ppm and a cetane number of more than 51. The process operates with or without a recycle of the liquid effluent. Highly advantageously, it can be integrated into a refinery layout comprising catalytic cracking.

Abstract: The present invention relates to an improved hydrocracking process, of hydrocarbon charges, in two-stages with intermediate separation, in which the second-stage of hydrocracking is carried out in the presence of an added nitrogen content which is greater than 110 ppm by weight.

Abstract: Process for transforming a gas oil fraction that makes it possible to produce a fuel that has a quality according to stringent requirements in terms of sulfur content, aromatic compound content, cetane number, boiling point, T95, of 95% of the compounds and density, d15/4, at 15° C. This process comprises a hydrorefining stage and a subsequent stage, whereby the latter uses a catalyst that is selected from the group that consists of hydrorcfining catalysts and catalysts that comprise at least one mixed oxide, a metal of group VIB, and a non-noble metal of group VIII. The conversion of products that have a boiling point of less than 150° C. is, for the hydrorefining stage, between 1 and 15% by weight. The temperature, TR2, of the subsequent stage is less than the temperature, TR1, of the hydrorefining stage, and the variation between temperatures TR1 and TR2 is between 0 and 80° C.

Abstract: The present invention concerns an improved procedure for producing basic oils and in particular very high quality oils, i.e. oils possessing a high viscosity index (VI), a low aromatics content, good UV stability and a low pour point, from oil cuts having an initial boiling point higher than 340° C., possibly with simultaneous production of middle distillates (in particular gasoils and kerosene) of very high quality, i.e. having a low aromatics content and a low pour point.

Abstract: Compositions comprising a peptide and polylactic-glycolic acid (PLGA) wherein the distribution of the size of the particles of the peptide in the PLGA results highly heterogeneous, suitable to the preparation of subcutaneous implants having a release time at least equal to 6 months.

Abstract: An improved process for producing very high quality base stock and for simultaneous production of high quality middle distallates, comprising successive hydroisomerisation and catalystic dewaxing steps wherein hydroisomerisation is carried out in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic support, the dispersion of the metal being less than 20%. The support is preferably an amorphous silica-alumina. Catalytic dewaxing is carried out in the presence of a catalyst containing at least one hydrodehydrogenating element (group VIII) and at least one molecular sieve (preferably zeolite). The sieve is preferable selected from NU-10, EU-1, EU-13, zeolite and ferrierite.

Abstract: The invention concerns a process for improving tde pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which process the feed to be treated is brought into contact with a catalyst comprising an EU-1 zeolite and at least one hydro-dehydrogenating element, at a temperature which is in the range 170° C. to 500° C., a pressure in the range 1 to 250 bar and an hourly space velocity in the range 0.05 to 100 h−1, in the presence of hydrogen in a proportion of 50 to 2000 l/l of feed. The oils obtained have good pour points and high viscosity indices (VI). The process is also applicable to gas oils and other feeds requiring a reduction of pour point. The invention also concerns an EU-1 zeolite from which a portion of elements T (Al, Ga, Fe or B) have been removed and which has an Si/T atomic ratio of at least 10.

Abstract: The invention relates to a process and installation for treating heavy petroleum feedstocks for producing a gas oil fraction that has a sulfur content of less than 50 ppm and most often 10 ppm that includes the following stages: a) mild hydrocracking in a fixed catalyst bed, b) separation from hydrogen sulfide of a distillate fraction that includes a gas oil fraction and a heavier fraction than the gas oil, c) hydrotreatment (including desulfurization) of said distillate fraction, and d) separation of a gas oil fraction with less than 50 ppm of sulfur. Advantageously, the heavy fraction is sent into catalytic cracking. The process preferably operates with make-up hydrogen that is brought to stage c), and very advantageously all of the make-up hydrogen of the process in introduced in stage c).

Abstract: The invention relates to a process for treating heavy petroleum feedstocks for producing a gas oil fraction that has a sulfur content of less than 50 ppm and most often 10 ppm that includes the following stages: a) ebulliated-bed catalytic hydrocracking, b) separation from hydrogen sulfide of a distillate fraction that includes a gas oil fraction and a heavier fraction than the gas oil, c) hydrotreatment of said distillate fraction, and d) separation of a gas oil fraction with less than 50 ppm of sulfur. Make-up hydrogen, preferably all make-up hydrogen, is to stage c). Advantageously, the heavier fraction from step (b) is subjected to catalytic cracking. The invention also relates to an installation that can be used for implementing this process.

Abstract: The present invention concerns an improved once-through process for hydrocracking hydrocarbon-containing feeds with high nitrogen contents, with partial elimination of ammonia, for example by a hot flash located between the hydrorefining zone and the hydrocracking zone. Said hot flash drum functions at a pressure close to that of the hydrorefining reactor and at a temperature in the range from 150° C. to the hydrorefining reactor outlet temperature.