Abstract: The invention concerns a process for hydrotreating a feed originating from renewable sources such as vegetable oils to produce paraffinic hydrocarbons in the presence of hydrogen in excess over the theoretical hydrogen consumption and under hydrotreatment conditions in a fixed bed reactor having a plurality of catalytic zones disposed in series and comprising a hydrotreatment catalyst. The total feed flow is divided into a certain number of different part flows equal to the number of catalytic zones in the reactor; the various part flows are injected into the successive catalytic zones in increasing proportions to produce an effluent comprising paraffinic hydrocarbons. The effluent undergoes a separation step in order to separate a gas fraction and a liquid fraction containing the paraffinic hydrocarbons. At least a portion of said liquid fraction is recycled to the first catalytic zone so that the weight ratio between said recycle and the part flow introduced into the first catalytic zone is 10 or more.

Abstract: Process for the continuous hydrogenation of triglyceride containing raw materials in a fixed bed reactor system having several catalyst beds arranged in series and comprising hydrogenation catalyst. The raw material feed, hydrogen containing gas and diluting agent are passed together through the catalyst beds at hydrogenation conditions. The raw material feed stream as well as the stream of hydrogen containing gas are divided into an equal number of different partial streams. These are each passed to one catalyst bed in such a manner that the weight ratio of diluting agent to raw material feed is essentially the same at the entrance of all catalyst beds and does not exceed 4:1. The claimed process is preferably conducted at low temperatures and allows the utilization of existing units due to the low recycle ratio. Further, a sufficient excess of hydrogen is used so that no valuable product is lost through decarb-reactions.

Abstract: Process for the continuous hydrogenation of triglyceride containing raw materials in a fixed bed reactor system having several catalyst beds arranged in series and comprising at least e hydrogenation catalyst comprising an active phase constituted by a nickel and molybdenum element. The raw material feed, hydrogen containing gas and diluting agent are passed together through the catalyst beds at hydrogenation conditions. The raw material feed stream as well as the stream of hydrogen containing gas are divided into an equal number of different partial streams. These are each passed to one catalyst bed in such a manner that the weight ratio of diluting agent to raw material feed is essentially the same at the entrance of all catalyst beds and does not exceed 4:1. The claimed process is preferably conducted at low temperatures and allows the utilization of existing units due to the low recycle ratio.

Abstract: The invention relates to a process for the treatment of heavy petroleum feedstocks in order to produce a gas oil fraction having a sulphur content of less than 50 ppm and generally 10 ppm which comprises the following stages: e) mild hydrocracking in a catalyst fixed bed, f) separation of the hydrogen sulphide, of a distillate cut including a gas oil fraction and of a fraction which is heavier than the gas oil, g) hydrotreating, by contact with at least one catalyst, of at least a portion of the distillate cut obtained in stage b) including the gas oil fraction, as a mixture with a feedstock resulting from a crude or refined renewable source, h) separation of a gas oil cut comprising less than 50 ppm of sulphur. Advantageously, the heavy fraction is sent for catalytic cracking. Preferably, the process is carried out with makeup hydrogen introduced in stage c) and very advantageously all the makeup hydrogen for the process is introduced in stage c).

Abstract: The invention concerns a process for the pre-treatment of an unrefined vegetable or animal oil, consisting of passing said oil through a reactor comprising at least one fixed bed of at least one adsorbent comprising a porous refractory oxide which is free of catalytic metals, at a temperature in the range 130° C. to 320° C., at a pressure in the range 0.1 to 7 MPa and with a residence time for said oil on said fixed bed in the range 0.1 to 1 hour. The invention concerns a process for pre-treatment of a semi-refined vegetable or animal oil, integrated upstream of a hydrotreatment step for the production of green gas oil.

Abstract: The invention describes a method of treating feeds from renewable sources comprising a hydrotreatment stage comprising at least two catalytic zones in which the entry stream comprising said feed mixed with at least a part of a hydrotreated liquid effluent from stage b) is introduced into the first catalytic zone at a temperature comprised between 150 and 260° C., and the effluent from the first catalytic zone is then introduced, mixed with at least a part of a hydrotreated liquid effluent from stage b) and preheated, into the following catalytic zone or zones at a temperature comprised between 260 and 320° C.

Abstract: The invention describes a method of treating feeds from renewable sources comprising: a hydrotreatment stage a) comprising at least two catalytic zones in which the entry stream comprising said feed mixed with at least a part of a hydrotreated liquid effluent from stage b) is introduced into the first catalytic zone at a temperature comprised between 150 and 260° C., and the effluent from the first catalytic zone is then introduced, mixed with at least a part of a hydrotreated liquid effluent from stage b) and preheated, into the following catalytic zone or zones at a temperature comprised between 260 and 320° C., a stage b) of separation of the effluent from the hydrotreatment stage a) permitting the separation of a gaseous effluent and of a hydrotreated liquid effluent of which at least a part is recycled upstream from each catalytic zone of stage a).

Abstract: The invention describes a method of treating feeds from renewable sources comprising a hydrotreatment stage comprising at least two catalytic zones in which the entry stream comprising said feed mixed with at least a part of a hydrotreated liquid effluent from stage b) is introduced into the first catalytic zone at a temperature comprised between 150 and 260° C., and the effluent from the first catalytic zone is then introduced, mixed with at least a part of a hydrotreated liquid effluent from stage b) and preheated, into the following catalytic zone or zones at a temperature comprised between 260 and 320° C.

Abstract: A hydrotreatment method of treating feedstocks coming from renewable sources, so as to produce gas-oil fuel bases of excellent quality feedstocks, for example, vegetable oils, whether unprocessed or having undergone beforehand a prerefining step, animal fats, or mixtures of such feedstocks. The feedstocks are subjected to a multistep treatment including hydrodehydrogenating and hydroisomerizing catalysts.

Abstract: The invention concerns a process for hydrotreatment and/or hydroconversion of a feed of bio-renewable origin containing triglyceride and/or fatty acid structures and wherein the fatty chains contain in the range 8 to 25 carbon atoms, said process comprising the following steps: a) hydrotreatment and/or hydroconversion of said bio-renewable feed in an ebullated bed reactor in the presence of a granular catalyst comprising, on an amorphous support, at least one metal or compound of a metal having a hydrodehydrogenating function, to produce a first effluent; b) sending the effluent produced in step a) to a distillation zone from which a gaseous fraction and at least one distillate cut the end point of which is less than 400° C.

Abstract: The invention describes a process for treatment of a feedstock that is obtained from a renewable source that comprises a hydrotreatment stage in the presence of at least one fixed-bed catalyst, whereby said catalyst comprises a hydro-dehydrogenating function and an amorphous substrate, at a temperature of between 50 and 450° C., at a pressure of between 1 MPa and 10 MPa, at an hourly volumetric flow rate of between 0.1 h?1 and 10 h?1, and in the presence of a total quantity of hydrogen that is mixed with the feedstock such that the hydrogen/feedstock ratio is between 50 and 1000 Nm3 of hydrogen/m3 of feedstock, followed by a separation from the hydrotreated effluent that is obtained from stage a) of hydrogen, gases, and at least one liquid hydrocarbon effluent that consists of at least 50% linear n-paraffins, and a steam-cracking of at least one portion of the liquid hydrocarbon effluent that is obtained from stage b).

Abstract: The invention describes a two-step process for hydrotreatment of a feed derived from a renewable source, comprising: a) a first step, termed a mild pre-hydrogenation step, operating in the presence of a first, metallic, catalyst comprising an active hydrodehydrogenating phase constituted by at least one metal from group VIII and/or at least one metal from group VIB and an amorphous mineral support; and b) a second step, termed the second treatment step, operating in the presence of a second, sulphurized, catalyst comprising an active hydrodehydrogenating phase constituted by at least one non-noble metal from group VIII and/or at least one metal from group VIB and an amorphous mineral support.

Abstract: Process for the continuous hydrogenation of triglyceride containing raw materials in a fixed bed reactor system having several catalyst beds arranged in series and comprising hydrogenation catalyst. The raw material feed, hydrogen containing gas and diluting agent are passed together through the catalyst beds at hydrogenation conditions. The raw material feed stream as well as the stream of hydrogen containing gas are divided into an equal number of different partial streams. These are each passed to one catalyst bed in such a manner that the weight ratio of diluting agent to raw material feed is essentially the same at the entrance of all catalyst beds and does not exceed 4:1. The claimed process is preferably conducted at low temperatures and allows the utilization of existing units due to the low recycle ratio. Further, a sufficient excess of hydrogen is used so that no valuable product is lost through decarb-reactions.

Abstract: The invention concerns a process for hydrodeoxygenation of feeds derived from renewable sources with conversion by decarboxylation/decarbonylation limited to at most 10%, using a bulk or supported catalyst comprising an active phase constituted by at least one element from group VIB and at least one element from group VIII, said elements being in the sulphide form, and the atomic ratio of the metal (or metals) from group VIII to the metal (or metals) from group VIB being strictly more than 0 and less than 0.095, said process being carried out at a temperature in the range 120° C. to 450° C., at a pressure in the range 1 MPa to 10 MPa, at an hourly space velocity in the range 0.1 h?1 to 10 h?1, and in the presence of a total quantity of hydrogen mixed with the feed such that the hydrogen/feed ratio is in the range 50 to 3000 Nm3 of hydrogen/m3 of feed.

Abstract: The invention is concerned with a supported or unsupported catalyst comprising an active phase constituted by a sulfur-containing group VIB element, the group VIB element being molybdenum, and a hydrodeoxygenation process with a yield of hydrodeoxygenation product which is greater than or equal to 90% of charges from renewable sources using a catalyst according to the invention.

Abstract: The invention relates to a process for FCC pretreatment by mild hydrocracking of a hydrocarbon feedstock that comprises a vacuum distillate fraction or a deasphalted oil or else a mixture of these two fractions, said primary feedstock, to produce gas oil and an effluent having an initial boiling point of more than 320° C., said effluent (FCC feedstock) then being subjected to a catalytic cracking, process in which at least 85% by weight of said primary feedstock ends above 375° C. and at least 95% by weight of said primary feedstock ends below 650° C., whereby the mild hydrocracking is performed under an absolute pressure of 2 to 12 MPa and at a temperature of between 300 and 500° C., characterized in that the hydrocarbon feedstock also comprises a lighter hydrocarbon fraction, a so-called secondary feedstock, of which at least 50% by weight ends below 375° C. and at least 80% ends above 200° C.

Abstract: The invention relates to a method of treating feedstocks from renewable sources without intermediate gas-liquid separation in order to produce diesel fuel bases of excellent quality. The feedstocks used can be raw vegetable oils or such oils that have been previously subjected to a prerefining stage, animal fats, or mixtures of such feedstocks. The invention relates to a method allowing high diesel fuel base yields to be obtained from such feedstocks.

Abstract: The invention relates to a method of treating feedstocks from renewable sources in order to produce diesel fuel bases of excellent quality. The feedstocks used can be, for example, raw vegetable oils or such oils that have been previously subjected to a prerefining stage, animal fats, or mixtures of such feedstocks. The invention relates to a method allowing high diesel fuel base yields to be obtained from such feedstocks.

Abstract: The invention relates to a method of treating feedstocks coming from renewable sources, so as to produce gas-oil fuel bases of excellent quality. The feedstocks used may for example be vegetable oils, whether unprocessed or having undergone beforehand a prerefining step, animal fats, or mixtures of such feedstocks. The invention relates to a method for obtaining, from such feedstocks, high yields of gas-oil bases.

Abstract: The invention relates to a process for the treatment of heavy petroleum feedstocks in order to produce a gas oil fraction having a sulphur content of less than 50 ppm and generally 10 ppm which comprises the following stages: a) mild hydrocracking in a catalyst fixed bed, b) separation of the hydrogen sulphide, of a distillate cut including a gas oil fraction and of a fraction which is heavier than the gas oil, c) hydrotreating, by contact with at least one catalyst, of at least a portion of the said distillate cut obtained in stage b) including the gas oil fraction, as a mixture with a feedstock resulting from a crude or refined renewable source, d) separation of a gas oil cut comprising less than 50 ppm of sulphur. Advantageously, the heavy fraction is sent for catalytic cracking. Preferably, the process is carried out with makeup hydrogen introduced in stage c) and very advantageously all the makeup hydrogen for the process is introduced in stage c).