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JP2005281602 |
To provide a method for removing carbon disulfide in hydrocarbons at a low cost and with a good workability.A method for removing carbon disulfide in hydrocarbons by contacting hydrocarbons containing carbon disulfide with an alkali wate...
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JP2005248071 |
To provide eco-friendly clean gasoline and a method for producing the same, wherein a gasoline fuel has a sufficiently reduced content of sulfur, aroma, and the like, while driving performance such as octane number is maintained.The meth...
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JP2005200456 |
To provide a method of removing hydrogen sulfide from a hydrogen sulfide-containing gas with the use of a sodium hydroxide aqueous solution which has excellent effects such that the formation of a polymerized product by aldol condensatio...
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JP2005139333 |
To provide a reforming plant for improving a removal rate of sulfur from an inferior fuel; and to provide a method therefor.The reforming plant has a desulfurization reactor for desulfurizing a target material of treatment, containing a ...
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JP2005068415 |
To provide a catalytically cracked gasoline base having a reduced sulfur content and a process for producing the catalytically cracked gasoline base, and to provide an unleaded gasoline composition that ensures satisfactory operating cha...
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JP3647763 |
To provide a heavy oil reforming method which reforms a heavy oil to give a fuel suitable for a gas turbine, eliminates sulfur and vanadium, i.e., harmful components, from a heavy oil, and enables almost all the hydrocarbons in the heavy...
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JP3623443 |
To provide a treatment method for an oil contaminated with an organic halogen compound whereby a hydrogen sulfide gas is scarcely generated. This treatment method is characterized in that an oil contaminated with an organic halogen compo...
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JP2004035704 |
To provide a method for producing ethylene using a petroleum-based hydrocarbon material containing organochlorine compound(s) without affecting the quality of the final product and the equipment.The method for producing ethylene at least...
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JP2003306683 |
To obtain a stable high-quality product by rapidly and continuously treating a waste oil or a regenerated fuel oil.The waste oil or the regenerated fuel oil is mixed with a concentrated sulfuric acid and after finishing the mixing, the u...
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JP2003226881 |
To provide a method for removing H2S and mercaptans from a hydrocarbon stream.This method for removing sulfur compounds from the hydrocarbon stream comprises bringing the hydrocarbon stream such as an LPG stream into contact with a weakl...
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JP3447408 |
PURPOSE: To enable the reduction in residual amount of chlorine in an atmospheric distillation step and, thereafter, prevent the corrosion and enable the stable operation of a crude oil refiner by mixing specific wash water with a crude ...
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JP2003027068 |
To provide a method for removing H2S and a mercaptan from a hydrocarbon stream.The hydrocarbon stream such as an LPG stream is brought into contact with a weakly basic stream such as a sodium hydrogencarbonate stream in an extraction col...
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JP2002294257 |
To provide a heavy oil reforming method which reforms a heavy oil to give a fuel suitable for a gas turbine, eliminates sulfur and vanadium, i.e., harmful components, from a heavy oil, and enables almost all the hydrocarbons in the heavy...
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JP2002129174 |
To provide a synthetic fuel production method and an apparatus therefor whereby supercritical water, carbon precipitation prevention in a heavy oil heating section, and precipitation prevention of an inorganic salt are enabled, and also ...
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JP2002105460 |
To provide a treatment method for an oil contaminated with an organic halogen compound whereby a hydrogen sulfide gas is scarcely generated.This treatment method is characterized in that an oil contaminated with an organic halogen compou...
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JP2002047496 |
To provide an economical and positive method and an apparatus for removing a hydrocarbon from a waste alkali derived from an alkali scrubber used for refining a decomposition gas within a thermal decomposition unit for thermally decompos...
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JP3247543 |
PURPOSE: To decompose a halogenated aromatic compound into such concentration as incapable of being substantially detected, by keeping the ratio of alkali in a system at an initiating time equal to or above a specific value, when the aro...
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JP2001248085 |
To provide a method for treating a flow of a spent caustic alkali generated from processing industries such as a refining and a petrochemistry.This method is for oxidizing a sulfur compound in the flow of the spent caustic alkali and com...
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JP2001055585 |
To provide a method for treating petroleum which enables recovery of a lot of value-added fractions having a boiling point lower than that of light oil by cracking a distillation residual oil under the normal pressure, thereby enables th...
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JP2000312886 |
To control the corrosion of a metal in use for a container and others with the use of a proper amount of a neutralizing agent by determining the amount of the agent by measuring the hydrogen ion concentration of water which extracted wat...
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JP2000273470 |
To provide a removing method of CO2 and H2S from a crude gas obtained by cracking of naphtha, by which a serious disadvantage causing adverse consequence in polymer formation (sedimentation in the discharge shaft, blockage of the inlet c...
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JP2000109850 |
To efficiently and easily gasify heavy oils and convert them into light oils, to inhibit facility corrosion and environmental pollution by easily converting metal components or sulfuric components contained in heavy oils into harmless in...
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JP3023588 |
PURPOSE: To prevent the sheet feeling failure by eliminating the drive of a cut sheet feeder or a tractor unit, while a sheet conveying route remains switched to a route different from a sheet feeding route from the feeder or the unit tr...
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JP10114687 |
To provide a method for controlling fouling of an alkali scrubber. This method comprises controlling the formation of fouling deposit produced on the surface of an alkali scrubber useful for cleaning of an acidic gas prepared during the ...
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JP10030093 |
To remove sulfur, a metal compound, etc., from a crude oil and use the residue as a fertilizer source. A crude oil is desalted, brought into contact with a large amount of ammonia to transfer sulfur compounds and metal compounds to an am...
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JP10017874 |
To obtain a low-sulfur gas oil having a high lubricity by oxidizing a gas oil fraction contg. at least a specified amt. of naphthalenes with naphthalenes-oxidizing bacteria to thereby bring the sulfur content and alkali extractable conte...
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JP09217069 |
To remove an amine salt-forming substance causing lowering of ability or corrosion of boilers in subsequent recovery of hydrogen sulfide from a hydrogen sulfide-containing fraction by adding an aqueous solution of an alkali to a hydrogen...
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JP2611900 |
PURPOSE: To make a hydrocarbon oil containing a small amount of halogenated aromatic compounds safely handleable by removing the halogen compounds therefrom. CONSTITUTION: A hydrocarbon oil mainly consisting of nonaromatic hydrocarbon oi...
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JP09048981 |
To efficiently and economically decompose/remove nitrogenous compounds and/or chlorinated compounds from a decomposed oil of waste plastics to prepare a refined oil by treating the decomposed oil with steam in the presence of a catalyst....
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JP08176558 |
PURPOSE: To enable the reduction in residual amount of chlorine in an atmospheric distillation step and, thereafter, prevent the corrosion and enable the stable operation of a crude oil refiner by mixing specific wash water with a crude ...
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JP07289656 |
PURPOSE: To decompose a halogenated aromatic compound into such concentration as incapable of being substantially detected, by keeping the ratio of alkali in a system at an initiating time equal to or above a specific value, when the aro...
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JP06346068 |
PURPOSE: To safely transport an oil while suppressing the environmental pollution caused by the oil. CONSTITUTION: Unrefined oil or refined oil is mixed with fine powder or powder of vegetable and transported in the form of a solid solut...
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JP06157015 |
PURPOSE: To obtain a pitch for carbonaceous materials having a high carbon yield without increasing the softening point by removing a component soluble in an aqueous solution of an alkali from a mixture containing one or more of coal tar...
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JP06025691 |
PURPOSE: To make a hydrocarbon oil containing a small amount of halogenated aromatic compounds safely handleable by removing the halogen compounds therefrom. CONSTITUTION: A hydrocarbon oil mainly consisting of nonaromatic hydrocarbon oi...
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JP04146994 |
PURPOSE: To improve the ignitability and flammability of a fuel oil by sinking a specified hydrophilic bag in a light fuel oil and making absorbed and removing moisture present in the oil. CONSTITUTION: A hydrophilic bag contg. a water-a...
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JP03217490 |
PURPOSE: To inexpensively, readily and efficiently recover arsenic without eroding a device by bringing an arsenic-containing hydrocarbon into contact with an aqueous solution of water solution sulfide and then separating the resultant w...
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JP03143993 |
PURPOSE: To economically and practically remove oxygen from a hydrocarbon fuel and to improve thermal stability of the hydrocarbon fuel by a constitution wherein a strong reducing agent is continuously introduced into the hydrocarbon fue...
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JP02014714 |
PURPOSE: To efficiently remove org. sulfur compds. by absorbing and removing mainly CS2 in a first stage from a gas contg. CS2 and COS, then decomposing COS in a second stage, and absorbing in a third stage H2S generated in the second st...
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JP02014713 |
PURPOSE: To efficiently remove org. sulfur compds. in gas by bringing the gas into contact with a catalyst supporting diglycolamine to decompose the org. sulfur compds. and by absorbing and removing H2S produced by the decomposition. CON...
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JP01304026 |
PURPOSE: To selectively remove H2S from a fluid mixture contg. the H2S and CO2 at need by treating the fluid mixture with an aq. soln. contg. high purity triethanolamine. CONSTITUTION: The fluid mixture is treated by the aq. soln. contg....
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JP01275692 |
PURPOSE: To remove ash from a waste engine oil by making use of a simple apparatus to regenerate the waste engine oil as a fuel oil, by conducting a particular reaction of a waste engine oil in a batch reaction tank, roughly separating t...
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JP01271487 |
PURPOSE: To attain effective utilization of resources and obtain a regenerated oil with a high utility value, by a process comprising simultaneously adding phosphoric acid and a particular anionic surfactant or a nonionic surfactant to w...
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JP01201391 |
PURPOSE: To improve the yield of extraction, by adding an alkaline soln. to a tar acid-contg. hydrocarbon oil and conducting mixing and centrifugation to separate an alkaline tar acid soln. CONSTITUTION: A tar acid-contg. hydrocarbon oil...
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JP01135896 |
PURPOSE: To remove organic acids and inorganic salts and prevent a purifier from corrosion, by bringing an oil with a high total acid value into contact with a mixture solution of an organic amine or ammonia, alcohol and water. CONSTITUT...
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JP01113492 |
PURPOSE: To improve the thermal stability of jet fuel sweetened by catalytic oxidation by washing the fuel with an aq. caustic alkali, then washing with water and drying the same. CONSTITUTION: The jet fuel is sweetened by prewashing the...
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JP01070592 |
PURPOSE: To inexpensively sweeten petroleum distillate by a catalyst with high activity and stability by separating and recirculating an alkaline phase containing the catalyst at a separation region after passing petroleum through a reac...
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JP63015886 |
PURPOSE: To obtain the title neutralizing agent having excellent transfer characteristics into the precondensation section of distillation equipment of a petroleum refinery and an excellent effect of controlling corrosion, by using a spe...
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JP62220586 |
PURPOSE: To desulfurize a methylnaphthalene oil of tar type in high desulfurization ratio and in high yield, by heating at a specific temperature the methylnaphthalene oil of tar type from which nitrogen-containing compounds are removed ...
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JP62128920 |
PURPOSE: To obtain an inexpensive alkalifying agent capable of efficiently neutralizing oil, waste liquor or the like having high specific gravity, hardly injuring the human body and easy to handle by mixing powder of an inorg. compound ...
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JP60186588 |
PURPOSE: Sodium metal is added to tar oil containing impurities such as quinolines and they are heat-treated or the tar oil is distilled in the presence of sodium metal to effect selective hydrogenolysis of sulfur and nitrogen compounds....
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