Abstract: A filter cleaning apparatus used in a reaction system including; a reaction tank having a filter, first feed line connected to the filter at one end, a recovery tank connected to the other end of the first feed line, and second feed line connected to the recovery tank at one end, is provided. The filter cleaning apparatus includes; first return line connected the second feed line at one end, first and second reverse cleaning solution tanks connected to the first return line, a first flow rate adjusting valve that can adjust filtered fluid to be supplied to the first reverse cleaning solution tank, a second flow rate adjusting valve that can adjust filtered fluid to be supplied to the second reverse cleaning solution tank, and a switching section that carries either one of the filtered fluids accommodated in these reverse cleaning solution tanks by switching.

Abstract: A method for starting up a bubble column slurry bed reactor of the present invention includes, when restarting operation of a bubble column slurry bed reactor for producing hydrocarbons by the Fischer-Tropsch synthesis reaction, feeding a hydroprocessed oil produced in the bubble column slurry bed reactor and hydroprocessed that contains 40% by mass or more of paraffin hydrocarbons having carbon number of 21 or more and that has a peroxide value of 1 ppm or less, to the bubble column slurry bed reactor.

Abstract: There is provided a synthesis reaction system which synthesizes a hydrocarbon compound by a chemical reaction of a synthesis gas including hydrogen and carbon monoxide as main components, and a slurry having solid catalyst particles suspended in liquid and which extracts the hydrocarbon compound from the slurry. The synthesis reaction system includes a reactor main body which accommodates the slurry, a separator which separates the hydrocarbon compound included in the slurry from the slurry, a first flow passage which allows the slurry including the hydrocarbon compound to flow to the separator from the reactor main body, a second flow passage which allows the slurry to flow to the reactor main body from the separator, and a fluid supply nozzle which supplies a fluid toward at least any one of the separator, the first flow passage, and the second flow passage.

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: A temperature control system of the invention recovers reaction heat in a reactor in which an exothermal reaction occurs, to control the temperature in the reactor. The temperature control system includes: a refrigerant drum in which vapor and a liquid refrigerant are stored in a vapor-liquid equilibrium state; a heat removing section arranged in the reactor to evaporate a part of the liquid refrigerant supplied from the refrigerant drum by the reaction heat; a Return line that returns mixed phase fluid of vapor and the liquid refrigerant generated in the heat removing section to the refrigerant drum; a Vapor outlet line that supplies vapor in the refrigerant drum to outside of the system; and a Replenishing line that supplies makeup water in an amount matched with an amount of vapor discharged to the outside of the system, to the Return line.

Abstract: Provided is a method of manufacturing diesel fuel, including: fractionating in a first fractionator a synthetic oil obtained by Fisher-Tropsch synthesis into at least two fractions of a middle fraction, and a wax fraction containing a wax component heavier than the middle fraction; hydroisomerizing the middle fraction by bringing the middle fraction into contact with a hydroisomerizing catalyst to produce a hydroisomerized middle fraction; hydrocracking the wax fraction by bringing the wax fraction into contact with a hydrocracking catalyst to produce a wax decomposition compound; fractionating in a second fractionator a mixture of the hydroisomerized middle fraction and the hydrocracked wax fraction into at least two fractions including a kerosene fraction and a gas oil fraction; and mixing the at least two fractions at a predetermined blend ratio to produce a diesel fuel having a kinematic viscosity at 30° C. of 2.5 mm2/s or more and a pour point of ?7.5° C. or less.

Abstract: There is provided a method for recovering hydrocarbon compounds from gaseous by-products generated in a Fischer-Tropsch synthesis reaction. The method includes absorbing light hydrocarbon compounds and a carbon dioxide gas from the gaseous by-products using an absorption solvent including liquid hydrocarbon compounds and a carbon dioxide gas absorbent, separating the absorption solvent which has absorbed the light hydrocarbon compounds and the carbon dioxide gas into the liquid hydrocarbon compounds and the carbon dioxide gas absorbent, heating the separated liquid hydrocarbon compounds to recover the light hydrocarbon compounds from the separated liquid hydrocarbon compounds, heating the separated carbon dioxide gas absorbent to strip the carbon dioxide gas from the separated carbon dioxide gas absorbent, and reusing the gaseous by-products from which the light hydrocarbon compounds and the carbon dioxide gas are absorbed as a feedstock gas for the Fischer-Tropsch synthesis reaction.

Abstract: There is provided a method for recovering hydrocarbon compounds from a gaseous by-products generated in the Fisher-Tropsch synthesis reaction, the method comprising a pressurizing step in which the gaseous by-products are pressurized, a cooling step in which the pressurized gaseous by-products are pressurized to liquefy hydrocarbon compounds in the gaseous by-products, and a separating step in which the hydrocarbon compounds liquefied in the cooling step are separated from the remaining gaseous by-products.

Abstract: The hydrocarbon synthesis reaction apparatus is provided with a synthesis gas supply line in which a synthesis gas is compressed and supplied by a first compressor, a reactor configured to accommodate a catalyst slurry, a gas-liquid separator configured to separate an unreacted synthesis gas and hydrocarbons discharged from the reactor into a gas and a liquid, a first recycle line in which the unreacted synthesis gas after separation into a gas and a liquid is compressed and recycled into the reactor by a second compressor, and a second recycle line configured to recycle a residual unreacted synthesis gas after separation into a gas and a liquid into the inlet side of the first compressor at the time of start-up operation when the synthesis gas is gradually increased in the amount to be introduced.

Abstract: In a process for producing hydrocarbons according to the present invention, estimated production rates for a light hydrocarbon oil and a heavy hydrocarbon oil are respectively determined based on a set reaction temperature used when the hydrocarbons are synthesized by a Fischer-Tropsch synthesis reaction, and the discharge flow rates of the light hydrocarbon oil and the heavy hydrocarbon oil from temporary storage buffer tanks (91, 92) during supply to a fractionator (40) are respectively controlled so as to be equal to the respective estimated production rates.

Abstract: The hydrocracking catalyst of the present invention is a hydrocracking catalyst comprising a catalyst support comprising a zeolite and 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 hydrocracking catalyst contains a carbonaceous substance comprising a carbon atom, and the content of the carbonaceous substance in the hydrocracking catalyst is 0.05 to 1% by mass in terms of the carbon atom.

Abstract: A hydrocracking process that includes a wax fraction hydrocracking step of hydrocracking the wax fraction contained within a Fischer-Tropsch synthetic oil to obtain a hydrocracked product, a gas-liquid separation step of using a multi-stage gas-liquid separator to separate the hydrocracked product into a gas component, a heavy oil component and a light oil component, a specific component content estimation step of determining the flow rate ratio between the heavy oil component and the light oil component, and using this flow rate ratio to determine an estimated value for the content of a specific hydrocarbon component contained within the hydrocracked product, and a control step of controlling the operation of the wax fraction hydrocracking step on the basis of this estimated value, so that the content of the specific hydrocarbon component falls within a predetermined range.

Abstract: A method for starting up a bubble column slurry bed reactor of the present invention includes, when restarting operation of a bubble column slurry bed reactor for producing hydrocarbons by the Fischer-Tropsch synthesis reaction, feeding a hydroprocessed oil produced in the bubble column slurry bed reactor and hydroprocessed that contains 40% by mass or more of paraffin hydrocarbons having carbon number of 21 or more and that has a peroxide value of 1 ppm or less, to the bubble column slurry bed reactor.

Abstract: A start-up method of a fractionator which fractionally distills FT synthesized hydrocarbons produced by the Fischer-Tropsch synthesis reaction, the method includes: discharging light FT synthesized hydrocarbons which exist in a gaseous state in an FT reactor performing the Fischer-Tropsch synthesis reaction from the FT reactor to the outside; cooling down the light FT synthesized hydrocarbons discharged from the FT reactor for liquefaction; supplying the liquefied light FT synthesized hydrocarbons to the fractionator; and heating the light FT synthesized hydrocarbons and circulating the light FT synthesized hydrocarbons to the fractionator.

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: The present invention provides a process for producing a hydrocarbon oil by performing a Fischer-Tropsch synthesis reaction using a reactor for a Fischer-Tropsch synthesis including a reaction apparatus having a slurry containing catalyst particles and a gaseous phase located above the slurry to obtain a hydrocarbon oil, wherein the Fischer-Tropsch reaction is performed while controlling a temperature of the slurry so that a difference T2?T1 between the average temperature T1 of the slurry and a temperature T2 at the liquid level of the slurry in contact with the gaseous phase is 5 to 30° C.

Abstract: A method for estimating a particulate content in a slurry of the present invention is a method for estimating a content of particulates having a predetermined particle size or less in a slurry with solid particles dispersed in hydrocarbons including a wax, the method including, based on a correlation between a visible light transmittance and a content of solid particles having the predetermined particle size or less at a temperature at which hydrocarbons including a wax are liquefied when the solid particles having the predetermined particle size or less are dispersed in the hydrocarbons, estimating a content of particulates having the predetermined particle size or less in the slurry from a visible light transmittance of a supernatant part when the slurry is left to stand at the temperature.

Abstract: The regenerated hydrotreating catalyst of the present invention is a regenerated hydrotreating catalyst prepared by regenerating a used hydrotreating catalyst comprising 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 regenerated hydrotreating catalyst contains 0.05 to 1% by mass of a carbonaceous substance in terms of a carbon atom based on the entire mass of the catalyst.

Abstract: Heavy hydrocarbons contained in FT off gas of a GTL process are removed by bringing the FT off gas into contact with absorption oil, by introducing the FT off gas into a distillation tower, by cooling the FT off gas or by driving the FT off gas into an adsorbent. A burner tip for heating a reformer tube, using FT off gas as fuel, is prevented from being plugged by the deposition of heavy hydrocarbons contained in the FT off gas.

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.