摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
An object of the invention is to provide a method of producing synthetic fuel from Fischer-Tropsch synthetic crude oil obtained by a Fischer-Tropsch synthesis method, the method comprising the steps of: (a) fractionating, in a fractionator, Fischer-Tropsch synthetic crude oil obtained by a Fischer-Tropsch synthesis method into at least two fractions of a middle fraction containing a component having a boiling range corresponding to diesel fuel oil, and a wax fraction containing a wax component heavier than the middle fraction; (b) separating and removing a magnetic particle contained in the wax fraction obtained in the step (a) at 100° C. to 450° C. by using a high gradient magnetic separator; and (c) hydrocracking the wax fraction obtained in the step (b) from which the magnetic particle is separated and removed.
摘要:
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.
摘要:
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.
摘要:
A startup method for a fractionator that is supplied with, and fractionally distills, a hydrocracked product obtained in a wax fraction hydrocracking step by hydrocracking a wax fraction contained within a Fischer-Tropsch synthetic oil, the method including a preheating step of preheating the fractionator using a hydrocarbon oil that includes at least a portion of the hydrocracked product and is liquid at a normal temperature and normal pressure.
摘要:
A process for hydrotreating a naphtha fraction that includes a step of estimating the difference between the naphtha fraction hydrotreating reactor outlet temperature and inlet temperature, based on the reaction temperature of the Fischer-Tropsch synthesis reaction and the ratio of the flow rate of the treated naphtha fraction returned to the naphtha fraction hydrotreating step relative to the flow rate of the treated naphtha fraction discharged from the naphtha fraction hydrotreating step, a step of measuring the difference between the naphtha fraction hydrotreating reactor outlet temperature and inlet temperature, and a step of adjusting the reaction temperature of the naphtha fraction hydrotreating step so that the measured difference between the naphtha fraction hydrotreating reactor outlet temperature and inlet temperature becomes substantially equal to the estimated difference between the naphtha fraction hydrotreating reactor outlet temperature and inlet temperature.
摘要:
Hydrocarbon oil obtained by Fischer-Tropsch synthesis reaction using a slurry bed reactor holding a slurry of a liquid hydrocarbon in which a catalyst is suspended; the hydrocarbon oil is fractionated into a distilled oil and a column bottom oil containing the catalyst fine powder by a rectifying column; at least part of the column bottom oil is transferred to a storage tank, and the catalyst fine powder is sedimented to the bottom of the storage tank to capture the catalyst fine powder; a residue of the column bottom oil is transferred from the rectifying column to a hydrocracker, and/or the supernatant of the column bottom oil from which the catalyst fine powder is captured by the storage tank is transferred from the storage tank to the hydrocracker; and using the hydrocracker, the residue of the column bottom oil and/or the supernatant of the column bottom oil is hydrocracked.