Abstract: A process for hydrocracking a petroleum feedstock involves: (a) hydrocracking the feedstock to obtain a hydrocracked effluent; (b) liquid/gas separation of the effluent to obtain a gaseous effluent and a liquid effluent; (c) fractionating the liquid effluent at a pressure P1, producing a first distillate and a first residue, (d) recycling a first portion of the first residue to hydrocracking, (e) rectifying a second portion of the first residue at a pressure P2 lower than or equal to the pressure P1, to obtain a secondary distillate, a secondary residue and a vapor stream, (f) purging a portion of the secondary residue, and (g) recycling all or part of the secondary distillate to hydrocracking.

Abstract: A process for hydrocracking a petroleum feedstock involves: (a) hydrocracking the feedstock to obtain a hydrocracked effluent; (b) liquid/gas separation of the effluent to obtain a gaseous effluent and a liquid effluent; (c) fractionating the liquid effluent at a pressure P1, producing a first distillate and a first residue, (d) recycling a first portion of the first residue to hydrocracking, (e) rectifying a second portion of the first residue at a pressure P2 lower than or equal to the pressure P1, to obtain a secondary distillate, a secondary residue and a vapor stream, (f) purging a portion of the secondary residue, and (g) recycling all or part of the secondary distillate to hydrocracking.

Abstract: In the hydrocracking process in accordance with the invention, which comprises a hydrocracking section, a high pressure hot separator and a fractionation section, upstream of the fractionation section, a stripper or reboiler column type separation column is added which treats at least a portion of the heavy effluent obtained from the high pressure hot separator. All or a portion of the bottom fraction from said column, which is rich in polynuclear aromatic compounds, is purged. At least a portion of the bottom fraction obtained from the fractionation section, which is constituted by unconverted products, is recycled to the reaction section.

Abstract: A facility and a process for hydrotreatment or hydroconversion, in which a fractionation section comprises a stripper which operates on the overhead fraction obtained from a low pressure separator drum.

Abstract: The present invention relates to a process and a device for separating a feedstock comprising benzene, toluene and C8+ compounds, by means of at least one “reformate” distillation column (C1), one aromatics extraction unit (P1), one para-xylene separation unit (P2), one xylene isomerization unit (P3) and one transalkylation unit (P4), the effluents of said units being separated in the following distillation columns: purification column (C6), deheptanizer (C7) and toluene column (C10), in which at least one of said distillation columns is suitable for being operated under vacuum so that: the majority of the C7? compounds are recovered in the product at the top of the distillation column operated under vacuum, and the majority of the C8+ compounds are recovered in the product at the bottom of the distillation column operated under vacuum.

Abstract: An installation for the hydrotreatment and hydroconversion of hydrocarbon-containing feedstocks, with a common fractionation section, for the production of at least one of the following products: naphtha (light and/or heavy), diesel, kerosene, distillate and residue: comprising at least: at least one hydroconversion reactor, a hot high-pressure separator drum B-1, a cold high-pressure separator drum B-2, at least one hydrotreatment reactor, a cold high-pressure separator drum B-20, a common fractionation section separating a top fraction, an intermediate fraction and a heavy fraction, An integrated hydroconversion and hydrotreatment process implementing said installation.

Abstract: The present invention relates to a process and a device for separating a feedstock comprising benzene, toluene and C8+ compounds, by means of at least one “reformate” distillation column (C1), one aromatics extraction unit (P1), one para-xylene separation unit (P2), one xylene isomerization unit (P3) and one transalkylation unit (P4), the effluents of said units being separated in the following distillation columns: purification column (C6), deheptanizer (C7) and toluene column (C10), in which at least one of said distillation columns is suitable for being operated under vacuum so that: the majority of the C7? compounds are recovered in the product at the top of the distillation column operated under vacuum, and the majority of the C8+ compounds are recovered in the product at the bottom of the distillation column operated under vacuum.

Abstract: A fluid mixing and distribution device for a catalytic downflow reactor, said device comprising a collection zone (A), a mixing zone (B) comprising a mixing chamber (15) for fluids and an exchange chamber (16) for fluids, a distribution zone (C), said exchange chamber (16) comprising at least one upper lateral cross-section of flow (17a) and at least one lower lateral cross-section of flow (17b) through which fluids can pass from said exchange chamber (16) to said distribution zone (C), characterized in that said exchange chamber (16) comprises a fluid deflection means (24) fixed to said exchange chamber (16) and located downstream of the upper lateral cross-section of flow (17a), said fluid deflection means (24) forming with said exchange chamber (16) a space (26) in the shape of a pan.

Abstract: In the hydrocracking process in accordance with the invention, which comprises a hydrocracking section, a high pressure hot separator and a fractionation section, upstream of the fractionation section, a stripper or reboiler column type separation column is added which treats at least a portion of the heavy effluent obtained from the high pressure hot separator. All or a portion of the bottom fraction from said column, which is rich in polynuclear aromatic compounds, is purged. At least a portion of the bottom fraction obtained from the fractionation section, which is constituted by unconverted products, is recycled to the reaction section.

Abstract: An installation for the hydrotreatment and hydroconversion of hydrocarbon-containing feedstocks, with a common fractionation section, for the production of at least one of the following products: naphtha (light and/or heavy), diesel, kerosene, distillate and residue: comprising at least: at least one hydroconversion reactor, a hot high-pressure separator drum B-1, a cold high-pressure separator drum B-2, at least one hydrotreatment reactor, a cold high-pressure separator drum B-20, a common fractionation section separating a top fraction, an intermediate fraction and a heavy fraction, An integrated hydroconversion and hydrotreatment process implementing said installation.

Abstract: A fluid mixing and distribution device for a catalytic downflow reactor, said device comprising a collection zone (A), a mixing zone (B) comprising a mixing chamber (15) for fluids and an exchange chamber (16) for fluids, a distribution zone (C), said exchange chamber (16) comprising at least one upper lateral cross-section of flow (17a) and at least one lower lateral cross-section of flow (17b) through which fluids can pass from said exchange chamber (16) to said distribution zone (C), characterized in that said exchange chamber (16) comprises a fluid deflection means (24) fixed to said exchange chamber (16) and located downstream of the upper lateral cross-section of flow (17a), said fluid deflection means (24) forming with said exchange chamber (16) a space (26) in the shape of a pan.

Abstract: The invention concerns a facility and a process for hydrotreatment or hydroconversion, in which the fractionation section comprises a stripper which operates on the overhead fraction obtained from a low pressure separator drum.