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JP2001517262A |
A process for reducing the Mutagenicity Index and/or the PCA content of a lubricating oil extract by re-extracting a lubricating oil extract with a second extraction solvent, different from the first extraction solvent, to form a seconda...
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JP2001247876A |
To provide a simple process for removing and recovering organosulfur compounds from a fuel oil at a low energy consumption and a low cost without the necessity for high temperatures, high pressures, and an expensive catalyst and without ...
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JP2001247877A |
To provide a process for separating and recovering aromatic hydrocarbon compounds such as polycyclic aromatics from a liquid oil at a low energy consumption and a low cost without the necessity for high temperatures, high pressures, and ...
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JP2001247875A |
To provide a process for separating and recovering an organosulfur compounds from a liquid oil by adding water to the liquid oil, adding a solvent to the mixture to efficiently and easily separate the solvent containing the liquid oil an...
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JP3187049B2 |
The impurity content, e.g. propionitrile, in a fraction containing C5 or C6 tertiary olefins obtained by cracking hydrocarbons is reduced by distilling with an alkanol and removing the impurity as a higher boiling point fraction.
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JP2001107059A |
To provide a method and an apparatus in which an organic sulfur compound in liquid oil is continuously, safely and effectively oxidation recovered by using an oxidizing agent containing hydrogen peroxide and the liquid oil is refined. A ...
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JP2001098281A |
To provide a preparation method for an oil having a high viscosity index above about 100, more preferably above about 140 by direct treatment of petroleum fractions based on the recovery of fractionated oils according to the viscosity in...
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JP2001089769A |
To provide a method of producing a highly combustible fuel oil for gas turbines from, e.g. heavy oil as the stock material. This method includes hydrogenation of heavy oil in the presence of a catalyst by bringing the heavy oil into cont...
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JP2001040370A |
To provide a method for producing a clean fuel for transportation means having a total sulfur content lower than 500 ppm. In a combined process for improved hydrogen treatment of a diesel fuel, a feed to be subjected to the hydrogen trea...
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JP2000312886A |
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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JP3089090B2 |
PURPOSE: To improve yield of a raffinate without lowering quality by pouring part of an extracting solvent into a raw material oil line to a solvent extracting tower as a pre-dilution solvent in purifying a lubricating oil fraction with ...
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JP2000511961A |
Low-sulfur aliphatic compounds are obtained from olefin-rich starting materials contaminated with organic sulfur compounds.
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JP3084382B2 |
To provide a simpler, more general and more correct method for analyzing a mixture of aromatic compounds by an ultraviolet spectral analysis method. The chromatographic analysis method includes steps of (a) first allowing a mixture of hy...
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JP3079091B2 |
To provide a rubber-processing oil that has a poor content of polycyclic aromatic compounds and a rich content of aromatic hydrocarbons. This rubber-processing oil has the content of polycyclic aromatic compounds of ≤3 mass % according...
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JP2000226341A |
To provide a method for separating and purifying a conjugated diene monomer most suitable for each of the methods for polymerizing the conjugated diene monomer for polymerization. This method for separating and purifying a conjugated die...
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JP3073757B2 |
A sample of a hydrocarbon oil containing asphaltenes is chromatographically analyzed by forming a mixture of the oil with a weak solvent. The mixture is passed in contact with a column of a stationary phase of fine solid particles of ful...
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JP3065816B2 |
A process for the production of a high viscosity index, low viscosity lubricating base oil having a kinematic viscosity of 3.0 to 5.0 mm<2>/s at 100 DEG C, a viscosity index of 120 or more and a pour point of -10 DEG C or less, while sim...
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JP3057125B2 |
A process for the production of a high viscosity index, low viscosity lubricating base oil having a kinematic viscosity of 3.0 to 7.5 mm<2>/s at 100 DEG C, a viscosity index of 120 or more and a pour point of -10 DEG C or less, while sim...
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JP3036822B2 |
A lubricating oil stock is extracted with N-methyl-2-pyrrolidone to yield a primary raffinate useful as a high VI lubricating base oil and a primary extract. The primary extract is mixed with antisolvent and chilled to yield a secondary ...
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JP2000096068A |
To provide a process for the desulfurization of petroleum effective for realizing efficient and inexpensive desulfurization.A sulfur compound is oxidized under the irradiation with visible light. The objective desulfurization process ena...
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JP3015948B2 |
Natural cresylic acid is processed to remove neutral oil impurities by countercurrent liquid/liquid extraction using a heavy phase solvent of a mixture of glycerol and another polyhydric alcohol, preferably triethylene glycol. The light ...
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JP2000063849A |
To provide a manufacturing method of a petroleum-based aromatic hydrocarbon oil, having an equivalent property to a conventional rubber process oil, but contg. almost no carcinogenic polycyclic aromatic compd., therefore, non-carcinogeni...
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JP2994066B2 |
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JPH11513307A |
PCT No. PCT/FI96/00538 Sec. 371 Date Jun. 19, 1998 Sec. 102(e) Date Jun. 19, 1998 PCT Filed Oct. 11, 1996 PCT Pub. No. WO97/13567 PCT Pub. Date Apr. 17, 1997An extraction method is disclosed, where organic impurities are removed from a p...
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JPH11511766A |
A process to improve the performance of furfural for aromatics extraction from gas oils and lube distillates by the addition of ethers and/or aldehydes, preferably having a dielectric constant less than about 40 @ 25 DEG C.
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JP2947369B2 |
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JP2942856B2 |
PCT No. PCT/JP97/03573 Sec. 371 Date Sep. 8, 1998 Sec. 102(e) Date Sep. 8, 1998 PCT Filed Oct. 2, 1997 PCT Pub. No. WO98/15361 PCT Pub. Date Apr. 16, 1998In order to subject a cellulosic material such as insulating paper onto and into wh...
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JP2938487B2 |
PURPOSE:To economically obtain a high quality lube base oil having a high content of an isoparaffin, a monocyclic naphthene, etc., and a low polycyclic aromatic matter content by hydrocracking a vacuum distillation oil, etc., in the pres...
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JP2928467B2 |
PURPOSE: To improve the efficiency of recovering by mixing a light oil and/or a heavy oil with a specific solvent to transfer an organosulfur compd. contained in the oil to the solvent and separating the solvent from the mixture by sedim...
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JP2928466B2 |
PURPOSE: To recover an organosulfur compd. from a bottom or a heavy oil efficiently and economically without changing the chemical structure of the compd. CONSTITUTION: An organosulfur compd. contained in a bottom or a heavy oil is recov...
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JP2926415B2 |
Process for the conversion of a heavy asphaltenes-containing hydrocarbonaceous feedstock comprising at least 25 %wt of hydrocarbons with a boiling point of at least 520 DEG C into products with a lower boiling point, which process compri...
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JP2919353B2 |
A method for scavenging sulfur species from a petroleum-derived medium is disclosed. The method comprises contacting the medium with sulfur species scavenging amount of an imine of the formula wherein x is an integer from 1 to 10, R' is ...
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JP2898440B2 |
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JPH1192771A |
To provide a process for reproducing waste oil whereby the resulting reproduced oil is reutilized as fuel oil or insulating oil by the almost complete removal of impurities. From a waste oil which contains salts and alkalis as impurities...
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JP2878858B2 |
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JP2878857B2 |
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JPH1180752A |
To improve the desulfurization efficiency in the desulfurization of petroleum by ultraviolet irradiation without being influenced by aromatic compounds such as naphthalene in the petroleum in the photochemical reaction. Petroleum oil sel...
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JP2835175B2 |
A lubricating oil stock is extracted with N-methyl-2-pyrrolidone to yield a primary raffinate useful as a high VI lubricating base oil and a primary extract. The primary extract is mixed with antisolvent and chilled to yield a secondary ...
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JPH10273693A |
To enable to simply separate saturated organic components such as components for inhibiting flavors, tastes and smells from an organic composition such as an unsaturated oil or fat product composition for foods by bringing an organic com...
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JPH10251665A |
To provide a process for producing organosulfur compds. whereby sulfur compds. present in petroleum can be taken out and converted into organosulfur compds. which can be used as a low-cost, stably available industrial material and to pro...
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JPH10168464A |
To provide a process for producing a diesel fuel oil which has a compsn. facilitating the cleaning treatment of an exhaust gas for the environmental protection while retaining performances represented by cetane number and to provide a di...
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JPH10506364A |
Process and apparatus for desulfurizing the gaseous product of the vacuum distillation of the heavy fraction of crude oil. The initial gaseous mixture (8) to be desulfurized is an incondensible gas that contains hydrogen sulfide. A gas-l...
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JPH10503792A |
This invention relates to a process for reducing the sulfur in a refinery process stream and/or crude oil, which comprises treating said refinery process stream and/or crude oil with an effective sulfur reducing amount of a reducing agen...
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JPH10503704A |
This invention relates to a process for improving the effectiveness of a refinery process catalyst. The process comprises treating the refinery process catalyst with an effective amount of reducing agent selected from the group consistin...
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JP2724512B2 |
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JP2724510B2 |
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JPH10500147A |
A process comprising combining the heavy oil still residue and propane in conduits (146) and pumping mixture through static mixer (300). The mixture is then passed through heat exchanger (301) and flows via (302) to an extraction vessel ...
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JP2665661B2 |
Process for separating a fluid feed mixture containing hydrocarbon oil and an organic solvent (e.g. obtained from a furfural extraction unit) by contacting said fluid feed mixture at elevated pressure with one side of a hydrocarbon oil-s...
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JPH09241659A |
To provide an apparatus capable of efficiently separating and removing water-soluble impurities contained in thermal decomposition product oil obtained by thermal decomposition of a plastics by a washing system. This washing apparatus is...
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JP2646259B2 |
Volatile acids present in n-methyl pyrrolidone vapor (1,2) from solvent extraction processes can be reacted with sacrificial metals (3) such as magnesium to concentrate the acid salts into a small volume of oil/NMP. Steam stripping (8) r...
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