Abstract: The method for cleaning a reactor of the present invention comprises passing a solvent through a wax-fraction hydrocracking apparatus which is charged with a catalyst and to which supply of a wax fraction is stopped, wherein the solvent comprising at least one oil selected from a group consisting of hydrocarbon and vegetable oils, and having a sulfur content of less than 5 ppm and being in a liquid state at 15° C.

Abstract: A method for producing a base oil for lubricant oils comprising: a first step of hydrocracking a stock oil having a content percentage of a heavy matter of 80% by mass or more so that a crack per mass of the heavy matter is 20 to 85% by mass, to obtain a hydrocracked oil comprising the heavy matter and a hydrocracked product thereof, a second step of fractionating the hydrocracked oil into a base oil fraction comprising the hydrocracked product and a heavy fraction comprising the heavy matter and being heavier than the base oil fraction, respectively, a third step of isomerization dewaxing the base oil fraction from the fractionation in the second step to obtain a dewaxed oil, wherein the heavy fraction from the fractionation in the second step is returned to the first step as a part of the stock oil.

Abstract: A method for producing a lubricating base oil, comprising: performing a 13C-NMR analysis regarding an oil to be treated and selecting the oil based on a value for dividing an integrated value of a peak for a tertiary carbon atom by an integrated value of all peaks at 0 to 50 ppm, a value for dividing an integrated value of a peak for a carbon atom constituting a main chain by the integrated value of all peaks at 0 to 50 ppm, and a value for dividing an integrated value of a peak for a branched CH3 bonded to a fifth or the following carbon atom from a terminal carbon atom in the main chain by an integrated value of all peaks at 10 to 25 ppm, and obtaining a dewaxed oil by isomerization dewaxing of the oil selected in the first step, is disclosed.

Abstract: Provided is a hydrotreating step (A) containing a hydroisomerization step (A1) that obtains a hydroisomerized oil (a1) by bringing a FT synthesis oil into contact with a hydroisomerization catalyst and/or a hydrocracking step (A2) that obtains a hydrocracked oil (a2) by bringing it into contact with a hydrocracking catalyst, and a fractionation step (B) that transfers at least a portion of the hydrotreated oil (a) composed of the hydroisomerized oil (a1) and/or the hydrocracked oil (a2) to a fractionator and, at the very least, obtains a middle distillate (b1) with a 5% distillation point of 130 to 170° C. and a 95% distillation point of 240 to 300° C., and a heavy oil (b2) that is heavier than the middle distillate (b1).

Abstract: The present invention provides a method for producing a hydroprocessing catalyst including a supporting step of allowing a catalyst support having a content of a carbonaceous substance containing carbon atoms of 0.5% by mass or less in terms of carbon atoms to support an active metal component containing at least one active metal element selected from metals belonging to Group 6, Group 8, Group 9 and Group 10 in the periodic table, to obtain a catalyst precursor, and a calcining step of calcining the catalyst precursor obtained in the supporting step to obtain the hydroprocessing catalyst.

Abstract: Provided is a process for fluid catalytic cracking of a heavy oil by contacting the oil with a catalyst at an elevated temperature for a short period of time to produce light olefins such as propylene and butene. The process comprises contacting the heavy oil with a catalyst containing 12 to 24 percent by mass of a shape selective zeolite under conditions of a reaction zone outlet temperature of 580 to 630° C., a catalyst/oil ratio of 15 to 40 weight/weight and a hydrocarbon residence time in the reaction zone of 0.1 to 1.0 second to produce a cracked product having a secondary cracking activity (C2 olefin concentration/C4 olefin concentration) value in the range of 0.30 to 0.55.

Abstract: A method for producing a hydroisomerization catalyst according to the present invention includes: a first step of preparing a catalyst to be treated, which contains a support having a one-dimensional porous structure including a 10-membered ring and at least one metal selected from the group consisting of: group 8 to 10 metals of the periodic table, Mo, and W supported on the hydroisomerization catalyst; and a second step of producing a hydroisomerization catalyst having a carbon content of 0.4 to 2.5% by mass by subjecting the catalyst to be treated to a coking treatment by means of a carbon-containing compound.

Abstract: A method for producing a lubricant base oil that has a predetermined boiling point range, the method including a first step of bringing a feedstock containing a first hydrocarbon oil having a boiling point in the above boiling point range and a second hydrocarbon oil having a lower boiling point than the boiling point range into contact with a hydroisomerization catalyst, wherein the catalyst contains a support that includes a zeolite having a one-dimensional porous structure including a 10-membered ring and a binder, and platinum and/or palladium supported on the support.

Abstract: A method for producing a lubricant base oil which comprises a first step of carrying out isomerization dewaxing by contacting, in the presence of hydrogen, a hydrocarbon oil containing normal paraffin having a boiling point of 360° C. or higher, with a hydroisomerization catalyst under conditions such that a cracking rate defined in the following formula (1) is 10 mass % or less, and a second step of carrying out the above isomerization dewaxing by temporarily switching the above conditions to conditions such that the cracking rate is 13 mass % or more. Cracking rate (mass %)=[(C1?C2)/C1]×100??(1) wherein C1 represents the mass ratio of a fraction having a boiling point of 360° C. or higher in the above hydrocarbon oil, and C2 represents the mass ratio of the fraction having a boiling point of 360° C. or higher in the above hydrocarbon oil after the isomerization dewaxing.

Abstract: A method for producing a lubricant base oil, the method comprising a first step of fractionating, from a hydrocarbon oil containing a base oil fraction and a heavy fraction that is heavier than the base oil fraction, the base oil fraction and the heavy fraction, and a second step of obtaining a dewaxed oil by isomerization and dewaxing of the base oil fraction fractionated in the first step, wherein a hydrocracked oil obtained by hydrocracking the heavy fraction fractionated in the first step is returned to the first step.

Abstract: Hydrocarbon oil obtained by Fischer-Tropsch (FT) synthesis reaction using a catalyst within a slurry bed reactor is fractionated into a distilled oil and a column bottom oil in a rectifying column, part of the column bottom oil is flowed into a first transfer line that connects a column bottom of the rectifying column to a hydrocracker, at least part of the column bottom oil is flowed into a second transfer line branched from the first transfer line and connected to the first transfer line downstream of the branching point, the amount of the catalyst fine powder to be captured is monitored while the catalyst fine powder in the column bottom oil that flows in the second transfer line are captured by a detachable filter provided in the second transfer line, and the column bottom oil is hydrocracked within the hydrocracker.

Abstract: Provided is a process for fluid catalytic cracking of a heavy oil by contacting the oil with a catalyst at an elevated temperature for a short period of time to produce light olefins such as propylene and butene. The process includes contacting the heavy oil with a catalyst containing as a constituent thereof a fluid catalytic cracking catalyst with a weight ratio (Wmat/Wusy) of an active matrix weight (Wmat) to an ultrastable Y type zeolite weight (Wusy) of 0 to 0.3, under conditions where the reaction zone outlet temperature is from 580 to 630° C., the catalyst/oil ratio is from 15 to 40 weight/weight and the residence time of hydrocarbon in the reaction zone is from 0.1 to 1.0 second.

Abstract: Hydrocarbon oil obtained by Fischer-Tropsch (FT) synthesis reaction using a catalyst within a slurry bed reactor is fractionated into a distilled oil and a column bottom oil in a rectifying column, part of the column bottom oil is flowed into a first transfer line that connects a column bottom of the rectifying column to a hydrocracker, at least part of the column bottom oil is flowed into a second transfer line branched from the first transfer line and connected to the first transfer line downstream of the branching point, the amount of the catalyst fine powder to be captured is monitored while the catalyst fine powder in the column bottom oil that flows in the second transfer line are captured by a detachable filter provided in the second transfer line, and the column bottom oil is hydrocracked within the hydrocracker.

Abstract: The present invention provides a method for producing a hydrocarbon oil, including performing a hydrocracking by continuously feeding, to a hydrocracking reactor containing a hydrocracking catalyst, a wax to be processed including: a raw wax containing 70% by mass or more of straight-chain hydrocarbons with a boiling point of higher than 360° C; and an uncracked wax containing 70% by mass or more of straight-chain hydrocarbons with a boiling point of higher than 360° C, which uncracked wax is separated from a hydrocracking product discharged from the reactor, to thereby yield a hydrocarbon oil including hydrocarbons with a boiling point of 360° C or lower.

Abstract: The hydrotreating catalyst of the present invention is a hydrotreating catalyst including a catalyst support including an amorphous composite metal oxide having solid acidity, and at least one active metal supported by the catalyst support and selected from noble metals of Group 8 to Group 10 in the periodic table, wherein the hydrotreating catalyst contains a carbonaceous substance including a carbon atom, and the content of the carbonaceous substance in the hydrotreating catalyst is 0.05 to 1% by mass in terms of the carbon atom.

Abstract: An object is to provide a method for producing a jet fuel composition capable of producing a jet fuel composition with excellent quality at a high yield even when a jet fuel blendstock derived from an FT synthesis oil is used, and a jet fuel composition produced by the production method. It is characterized by including a step of mixing a certain Fischer Tropsch (FT) synthesis jet fuel blendstock with a certain petroleum based jet fuel blendstock so that the ratio of the FT synthesis jet fuel blendstock in the composition ranges from 20 to 80% by volume.

Abstract: An object is to provide a method for producing a jet fuel composition capable of producing a jet fuel composition with excellent quality at a high yield even when a jet fuel blendstock derived from an FT synthesis oil is used, and a jet fuel composition produced by the production method. It is characterized by including a step of mixing a certain Fischer Tropsch (FT) synthesis jet fuel blendstock with a certain petroleum based jet fuel blendstock so that the ratio of the FT synthesis jet fuel blendstock in the composition ranges from 20 to 80% by volume.

Abstract: A method for producing a lubricating base oil, comprising: performing a 13C-NMR analysis regarding an oil to be treated and selecting the oil based on a value for dividing an integrated value of a peak for a tertiary carbon atom by an integrated value of all peaks at 0 to 50 ppm, a value for dividing an integrated value of a peak for a carbon atom constituting a main chain by the integrated value of all peaks at 0 to 50 ppm, and a value for dividing an integrated value of a peak for a branched CH3 bonded to a fifth or the following carbon atom from a terminal carbon atom in the main chain by an integrated value of all peaks at 10 to 25 ppm, and a obtaining a dewaxed oil by isomerization dewaxing of the oil selected in the first step, is disclosed.

Abstract: The regenerated hydrocracking catalyst according to the present invention is a regenerated hydrocracking catalyst prepared by regenerating a used hydrocracking catalyst including: a catalyst support containing zeolite and an amorphous composite metal oxide having solid acidity; and at least one active metal supported by the catalyst support, selected from noble metals of Group 8 to Group 10 in the periodic table, wherein the regenerated hydrocracking catalyst contains 0.05 to 1% by mass of a carbonaceous substance in terms of carbon atoms based on the entire mass of the catalyst.

Abstract: A method for producing a base oil for lubricant oils comprising: a first step of hydrocracking a stock oil having a content percentage of a heavy matter of 80% by mass or more so that a crack per mass of the heavy matter is 20 to 85% by mass, to obtain a hydrocracked oil comprising the heavy matter and a hydrocracked product thereof, a second step of fractionating the hydrocracked oil into a base oil fraction comprising the hydrocracked product and a heavy fraction comprising the heavy matter and being heavier than the base oil fraction, respectively, a third step of isomerization dewaxing the base oil fraction from the fractionation in the second step to obtain a dewaxed oil, wherein the heavy fraction from the fractionation in the second step is returned to the first step as a part of the stock oil.