Abstract: The present disclosure relates to a method for replacing a catalyst of a reactor train of an operating hydroprocessing system comprising a plurality of reactor trains comprising a catalyst and each configured to receive a feed fluid and combine a portion of the feed fluid with a hydrogen stream over the catalyst to generate a hydrotreated fluid, the method comprising activating a valving system of the operating hydroprocessing system to disrupt operation of a select reactor train comprising a spent catalyst to form a disrupted reactor train while maintaining operation of at least one other reactor train; activating the gas processing system to form a decontaminated catalyst, removing the decontaminated catalyst from the disrupted reactor train to form a catalyst free reactor train; loading the catalyst free reactor train with a fresh catalyst to produce a charged reactor train; and restoring operation of the catalyst charged reactor train.

Abstract: The present disclosure relates to a process for generating a stripped fluid having reduced chloride content, the process comprising stripping chloride from a hydroprocessing effluent using a hot high pressure stripper to generate the stripped fluid and a vapour, wherein the stripped fluid comprises a lower chloride content than the hydroprocessing effluent, and wherein the vapour comprises chloride.

Abstract: Disclosed is a process for vacuum distillation of a hydrocarbon stream comprising i) passing a hydrocarbon stream into a preflash vessel maintained under conditions to separate the hydrocarbon stream into a preflash liquid and a preflash vapor, ii) passing the preflash liquid into a vacuum furnace maintained under conditions to heat and partly vaporize the preflash liquid, iii) passing the heated furnace effluent into a zone located in the lower part of a vacuum distillation column maintained under fractionating conditions, and iv) passing the preflash vapor into the vacuum distillation column into a further zone located in the lower part of the vacuum distillation column.

Abstract: The invention provides a process for the preparation of a gas oil fraction comprising the steps of: (a) providing a stream of a first hydrocarbon product of which a major portion of the hydrocarbons have a boiling point in the range of from 370-540° C. and a stream of a second hydrocarbon product of which a major portion of the hydrocarbons have a boiling point of less than 370° C.

Abstract: A process or hydrotreating a hydrocarbon oil that employs a first reactor and a second reactor. The hydrocarbon oil is hydrotreated in the first reactor with a first hydrotreating catalyst in the presence of a first stream of hydrogen-containing gas to obtain a first effluent. The first effluent is separated using a stripping column to provide a hydrotreated hydrocarbon oil and used hydrogen-containing gas. A second stream of hydrogen-containing gas is heated within a section of a heating device arranged upstream of the first reactor to obtain a stream of heated hydrogen-containing gas. The stream of heated hydrogen-containing gas is contacted in the second reactor in the presence of at least part of the hydrotreated hydrocarbon oil with a second hydrotreating catalyst to obtain a second effluent which comprises a further hydrotreated hydrocarbon oil.

Abstract: The invention relates to a process for vacuum distillation of a hydrocarbon stream comprising i) passing a hydrocarbon stream into a preflash vessel maintained under conditions to separate the hydrocarbon stream into a preflash liquid and a preflash vapor, ii) passing the preflash liquid into a vacuum furnace maintained under conditions to heat and partly vaporize the preflash liquid, iii) passing the heated furnace effluent into a zone located in the lower part of a vacuum distillation column maintained under fractionating conditions, and iv) passing the preflash vapor into the vacuum distillation column into a further zone located in the lower part of the vacuum distillation column. The invention also relates to a high vacuum unit (HVU) configured to perform the vacuum distillation process.

Abstract: The invention provides a process for the preparation of a gas oil fraction comprising the steps of: (a) providing a stream of a first hydrocarbon product of which a major portion of the hydrocarbons have a boiling point in the range of from 370-540° C. and a stream of a second hydrocarbon product of which a major portion of the hydrocarbons have a boiling point of less than 370° C.

Abstract: A hydrocarbon oil is hydrotreated in a process employing at least a first and a second reactor vessel, which process comprises: (i) contacting the hydrocarbon oil in the first reactor vessel at elevated temperature and pressure with a hydrotreating catalyst in the presence of a hydrogen-containing gas, thereby consuming hydrogen; (ii) separating the effluent of step (i) into partly hydrotreated hydrocarbon oil and contaminated hydrogen containing gas using a stripping column employing used hydrogen-containing gas as stripping gas; (iii) contacting partly hydrotreated hydrocarbon oil obtained in step (ii) in the second reactor vessel at elevated temperature and pressure with a hydrotreating catalyst in the presence of clean hydrogen-containing gas, thereby consuming hydrogen, wherein at least 80% of the hydrogen consumed in steps (i) and (iii) is supplemented by additional clean hydrogen-containing gas fed to the second reactor; (iv) separating the product from step (iii) in the second reactor vessel into a hy

Abstract: A hydrocarbonaceous feedstock is converted in a process comprising the following steps: (a) the feedstock is contacted with hydrogen under hydrotreating conditions to yield hydrotreated product; (b) the hydrotreated product is subjected to a separation treatment to separate at least hydrogen from the hydrotreated product to obtain a liquid hydrotreated product stream; (c) at least a portion of the liquid hydrotreated product stream is subjected to a stripping treatment to separate a light product from the liquid hydrotreated product stream, leaving a heavy hydrotreated product; (d) the heavy hydrotreated product is separated under reduced pressure into a least one gaseous stripped fraction and at least one liquid stripped fraction in a separation zone, wherein at least a portion of a liquid stripped fraction is reheated and recycled to the separation zone, in which process at least a portion of the liquid stripped fraction is reheated by heat exchange between at least a portion of the liquid hydrotreated prod