摘要:
Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510°C+ feeds. A feed can be deasphalted and then catalyticaliy and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
摘要:
The invention relates to a method comprising at least the following steps: a) viscoreduction of al or part of the charge, b) solvent de-asphalting of all or part of the product from step a), c) hydroconversion of the fraction comprising the large part of the asphaltenes from step b), d) fractionation of the de-asphalted oil from step c) and e) hydrotreatment of the de-asphalted residue from the fractionation step d).
摘要:
A process for creating higher quality and lower quality base oils from used lubricating oils and crude oils, wherein the higher quality base oils may be either Group III or Group II and the lower quality base oils may be either Group II or Group I. Vacuum gas oils produced from used lubricating oils and from crude oils are processed via two or more process steps, including solvent extraction, solvent or catalytic or iso dewaxing, and hydrotreating. Such process enables efficient conversion and operation of refineries formerly capable only of making Group I base oils, even as their ability to make heavier base oils, waxes, and bright stocks is preserved, substantially to the same extent as such products had been made prior to undertaking the conversion.
摘要:
L'invention concerne un procédé de conversion d'une charge lourde d'hydrocarbures ayant une température initiale d'ébullition d'au moins 300 °C comprenant les étapes suivantes : a) une étape d'hydroconversion d'au moins une partie de ladite charge en présence d'hydrogène dans des conditions permettant d'obtenir une charge liquide à teneur réduite en carbone Conradson, en métaux, en soufre et en azote, b) une étape de séparation de l'effluent issu de l'étape a) pour obtenir une fraction liquide légère bouillant à une température inférieure à 300 °C et une fraction liquide lourde bouillant à une température supérieure à 300 °C, c) une étape de désasphaltage sélectif d'au moins une partie de la fraction liquide lourde, d) une étape de recyclage d'au moins une partie de la coupe huile desasphaltée DAO issue de l'étape c) en amont de l'étape a) d'hydroconversion et/ou à l'entrée de l'étape b) de séparation.
摘要:
The present invention relates to a method for preparing lubricating base oils by using vacuum distilled deasphalted oil, and more specifically, to a method for preparing various kinds of lubricating base oils by distilling a distillate obtained from a solvent deasphalting (SDA) process to obtain heavy deasphalted oil (H-DAO) and light deasphalted oil (Lt-DAO), and treating the H-DAO by catalytic reaction and the Lt-DAO by hydrogenation, respectively. According to the present invention, it is possible to obtain a heavy lubricating base oil (150BS) of a high viscosity grade which could not obtained by a known catalytic reaction and a lubricating base oil of group III by hydrogenation, at a high yield, and thus economical efficiency and efficiency are excellent.
摘要:
The invention relates to a method for converting a charge, said method comprising a step a) de-asphalting using charge solvent step b) hydrotreatment for the de-asphalted oil fraction and step c) hydroconversion of the fraction comprising the essential asphalts, preferably after addition for said fraction to a flux, for example a gas/oil cut.
摘要:
Heavy oil containing not greater than 12 wt% of hydrogen as a raw material oil is subjected to solvent extraction, so that the hydrogen content increases by 0.2 wt% or more with respect to the raw material oil. After this, hydrotreating is performed so that the hydrogen content increases by 0.5 wt% or more with respect to the extraction oil, thereby obtaining refined oil. Thus, it is possible to obtain refined oil by using cheap heavy oil as a raw material and by using a simple and reliable method.
摘要:
L'invention concerne un procédé de conversion de charges hydrocarbonées lourdes dont au moins 50% poids bout à une température d'au moins 300°C, et en particulier des résidus sous vide. Les charges sont soumises à une première étape a) d'hydroconversion profonde, éventuellement suivie d'une étape b) de séparation d'une fraction légère, et il est obtenu une la fraction résiduelle lourde issue de l'étape b) dont au moins 80% poids présente une température d'ébullition d'au moins 250°C. Ladite fraction issue de l'étape b) ou l'effluent issu de l'étape a) est ensuite soumis à une seconde étape c) d'hydroconversion profonde. La vitesse spatiale horaire globale pour les étapes a) à c) est inférieure à 0,1 h -1 . L'effluent issu de l'étape c) est fractionné pour séparer une fraction légère. La fraction lourde obtenue dont 80% poids bout à une température d'au moins 300°C est envoyée dans une étape e) de désasphaltage. La fraction désasphaltée DAO est alors de préférence convertie dans une étape f) choisie parmi l'hydroconversion en lit bouillonnant, le craquage catalytique en lit fluidisé et l'hydrocraquage en lit fixe.
摘要:
Methods are provided for producing lubricant base stocks from deasphalted oils formed by sequential deasphalting. Tile deasphalted oil can be exposed a first deasphalting process using a first solvent that can provide a lower severity of deasphalting and a second deasphalting process using a second solvent that can provide a higher seventy of deasphalting. This can result in formation of at least a deasphalted oil and a resin fraction. The resin fraction can represent a fraction that traditionally would have been included as part of a deasphalter rock fraction.
摘要:
Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510°C+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks. The catalytic processing can correspond to processing in at least two stages. The amount of conversion performed in each stage can be varied to produce bright stocks with various properties.