Abstract: A method for upgrading a synthesis oil synthesized by the Fisher-Tropsch synthesis reaction, the method includes: a hydroisomerization step of hydroisomerizing the synthesis oil to remove alcohols and olefins, and converting at least a portion of normal paraffins with a carbon number of 5 or more into isoparaffins to obtain a hydroisomerized synthesis oil; a crude oil mixing step of mixing the hydroisomerized synthesis oil with a crude oil to obtain a mixed crude oil; a mixed crude oil transferring step of transferring the mixed crude oil to a crude oil distillation unit of a refinery; and a mixed crude oil refining step of processing the transferred mixed crude oil in petroleum refining facilities of the refinery including at least the crude oil distillation unit.

Abstract: 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.

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: There is provided a method for upgrading hydrocarbon compounds, in which hydrocarbon compounds synthesized in a Fisher-Tropsch synthesis reaction are fractionally distillated, and the fractionally distillated hydrocarbon compounds are hydrotreated to produce liquid fuel products. The method includes fractionally distilling heavy hydrocarbon compounds synthesized in the Fisher-Tropsch synthesis reaction as a liquid into a first middle distillate and a wax fraction, and fractionally distilling light hydrocarbon compounds synthesized in the Fisher-Tropsch synthesis reaction as a gas into a second middle distillate and a light gas fraction.

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: Provided is a method for synthesizing liquid hydrocarbon compounds wherein synthesizing liquid hydrocarbon compounds from a synthesis gas by a Fisher-Tropsch synthesis reaction. The method includes a first absorption step of absorbing a carbon dioxide gas, which is contained in gaseous by-products generated in the Fisher-Tropsch synthesis reaction, with an absorbent, and a second absorption step of absorbing a carbon dioxide gas, which is contained in the synthesis gas, with the absorbent which is passed through the first absorption step.

Abstract: A method for starting-up a naphtha fraction hydrotreating reactor which subjects a naphtha fraction obtained in a fractionator by fractional distillation of hydrocarbon compounds produced by a Fischer-Tropsch synthesis reaction to hydrotreating, the method comprising: charging in advance an inactive hydrocarbon compound corresponding to the naphtha fraction into a vapor-liquid separator to which hydrogenated naphtha, which has been subjected to hydrotreating in the naphtha fraction hydrotreating reactor, is transferred; mixing the inactive hydrocarbon compound drawn from the vapor-liquid separator and the naphtha fractions being transferred from the fractionator to the naphtha fraction hydrotreating reactor, and supplying a mixture of the naphtha fractions and the inactive hydrocarbon compound to the naphtha fraction hydrotreating reactor.

Abstract: The hydrocarbon production apparatus is provided with a gas-liquid separator for cooling gaseous state hydrocarbons drawn out from a gas phase portion of a reactor for the Fischer-Tropsch synthesis reaction and liquefying a portion of the hydrocarbons. A light liquid hydrocarbon supply line for supplying light hydrocarbons is disposed between a downstream side line which is downstream from the last stage of a gas-liquid separating unit of the gas-liquid separator, and an upstream side line which is upstream from the last stage of the gas-liquid separating unit of the gas-liquid separator, wherein the downstream side line is a liquid hydrocarbon line on the downstream side through which the light hydrocarbons having cloud points lower than the temperature at an outlet of a cooler in the last stage of the gas-liquid separating unit are flowed.

Abstract: A method for producing hydrocarbons includes: a synthesis step of synthesizing hydrocarbons by the Fischer-Tropsch synthesis reaction using a slurry bubble column reactor having a slurry containing catalyst particles and liquid hydrocarbons retained inside the reactor, and having a gas phase portion located above the slurry; a discharging step of passing the slurry through a filter positioned inside and/or outside the reactor, thereby separating and discharging the heavy liquid hydrocarbons; a backwash step of flushing liquid hydrocarbons through the filter in the opposite direction to the flow of the slurry, thereby returning the catalyst particles to the reactor; and a cooling and gas-liquid separation step of cooling the hydrocarbons discharged from the gas phase portion, and then separating and collecting the condensed light liquid hydrocarbons.

Abstract: An agent for improving lawn grass quality, which is excellent in promoting dwarfing of lawn grass, making the stem sturdy, increasing the leaf count, and improving greenness, is provided. An agent for improving lawn grass quality containing, as active ingredients, 5-aminolevulinic acid represented by formula (1): R2R1NCH2COCH2CH2COR3??(1) wherein R1 and R2 each independently represent a hydrogen atom, an alkyl group, an acyl group, an alkoxycarbonyl group, an aryl group or an aralkyl group; and R3 represents a hydroxyl group, an alkoxy group, an acyloxy group, an alkoxycarbonyloxy group, an aryloxy group, an aralkyloxy group or an amino group, or a derivative thereof or a salt of the acid or the derivative, and a gibberellin biosynthesis inhibitor.

Abstract: A bubble column reactor includes a reactor body which contains a slurry having solid catalyst particles suspended in a liquid, an inflow port which is provided at the bottom of the reactor body and allows a synthesis gas including a carbon monoxide gas and a hydrogen gas as the main components to flow into the slurry therethrough, and an outflow port which is provided at the top of the reactor body and allows gaseous hydrocarbons synthesized by a chemical reaction between the synthesis gas and the slurry, an unreacted synthesis gas, and the like to flow out therethrough. The distance in a vertical direction between the liquid surface of the slurry and the outflow port is 1.4 m or more and 10 m or less.

Abstract: 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.

Abstract: The present invention relates to a management method for a wax fraction storage tank that stores a wax fraction produced by Fischer-Tropsch synthesis until the wax fraction is hydrocracked, the management method including maintaining the temperature inside the tank at 90° C. to 130° C. and maintaining the atmosphere inside the tank to be an inert gas atmosphere.

Abstract: Provided are: a novel yeast having an ability to efficiently produce ethanol from glucose and xylose in a short time in the coexistence of the glucose and the xylose; and a method for producing ethanol using the novel yeast. A yeast, which was designated as Candida intermedia 4-6-4T2 and was deposited as FERM BP-11509.

Abstract: There is provided an agent for improving the growth of seedlings, having effects of raising healthy rice seedlings, such as increase of the tillering number, increase of root weight, enhancement of greenness, and increase of stem thickness. An agent for improving the growth of rice seedlings containing, as active ingredients, 5-aminolevulinic acid represented by formula (1), a derivative thereof or a salt of the acid or the derivative, and a gibberellin biosynthesis inhibitor: R2R1NCH2COCH2CH2COR3??(1) wherein R1 and R2 each independently represent a hydrogen atom, an alkyl group, an acyl group, an alkoxycarbonyl group, an aryl group or an aralkyl group; and R3 represents a hydroxyl group, an alkoxy group, an acyloxy group, an alkoxycarbonyloxy group, an aryloxy group, an aralkyloxy group or an amino group.

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: Provided is a method for synthesizing liquid hydrocarbon compounds wherein synthesizing liquid hydrocarbon compounds from a synthesis gas by a Fisher-Tropsch synthesis reaction. The method includes a first absorption step of absorbing a carbon dioxide gas, which is contained in gaseous by-products generated in the Fisher-Tropsch synthesis reaction, with an absorbent, and a second absorption step of absorbing a carbon dioxide gas, which is contained in the synthesis gas, with the absorbent which is passed through the first absorption step.

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: A hydrocarbon synthesis reaction apparatus includes a reactor, and a synthesis gas supply line through which a synthesis gas is supplied to the reactor, and syntheses hydrocarbons by contacting the synthesis gas and the catalyst slurry in the reactor. The hydrocarbon synthesis reaction apparatus includes a spare supply line which is connected to the synthesis gas supply line, and supplies inert gas or hydrogen gas to the reactor through the synthesis gas supply line when supply of the synthesis gas to the synthesis gas supply line from the synthesis gas supply device is stopped, and a fluid heating device which heats at least one of a fluid which flows through a flowing line of the synthesis gas supply line located closer to the reactor than a portion connected with the spare supply line, and a fluid which flows through the spare supply line.

Abstract: A process for producing a kerosene base fuel according to the present invention comprises removing paraffins having carbon number of 7 or less from a first fraction having an initial boiling point of 95 to 140° C. and a final boiling point of 240 to 280° C. obtained from a hydrotreated oil of a Fischer-Tropsch synthetic oil to obtain a second fraction having a content of paraffins having carbon number of 7 or less of 0.1 to 0.7% by mass.