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JPH0572438B2 |
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JPH05239469A |
PURPOSE: To provide a process for selectively and efficiently separating arom. hydrocarbons from a mixture of hydrocarbons without addition of a surfactant. CONSTITUTION: An O/W emulsion obtd. by dispersing a liquid mixture of hydrocarbo...
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JPH0556397B2 |
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JPH05202367A |
PURPOSE: To obtain a desulfurized and denitrated light oil having a low particulate content and high cetane number according to simple operation without using an apparatus for hydrodesulfurization by extracting a light oil in a nitrogen-...
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JPH0542480B2 |
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JPH05105883A |
PURPOSE: To continuously carry out deasphalting and demetallating of a crude oil distillation residue with ease and advantage by separating a homogeneous solution of a crude oil distillation residue and oil and dimethyl carbonate into a ...
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JPH0524193B2 |
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JPH0524194B2 |
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JPH055000B2 |
A process for increasing the production of deasphalted oil comprises passing a hydrocarbon feedstock into a first distillation zone (10) wherein the feedstock is separated into a first distillate and a first residuum. At least a fraction...
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JPH055278B2 |
A process in fuels production for increasing the yield of deasphalted oil production from upgraded residua and improving deasphalter (42) operability involving mixing the upgraded residua with an aromatics solubilizing aid to prevent the...
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JPH04348187A |
PURPOSE: To improve the oxidation stability of gas oil generated by catalytic decomposition. CONSTITUTION: Oxidized or non-oxidized gas oil obtained at a time of catalytic decomposition is subjected to liquid-liquid extraction by using a...
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JPH0472876B2 |
A process for converting catalytic cracking bottoms to a feedstock suitable for carbon artifact manufacture, especially carbon fibre manufacture, comprises stripping the bottoms of fractions boiling below about 400 °C, catalytically hea...
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JPH04331287A |
PURPOSE: To remove mercury or a mercury compd. contained in a hydrocarbon oil by a simple method. CONSTITUTION: Mercury or a mercury compd. contained in a hydrocarbon oil can be removed sufficient by a simple method, i.e., by shaking an ...
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JPH04331286A |
PURPOSE: To remove mercury or a mercury compd. contained in a hydrocarbon oil by a simple method. CONSTITUTION: Mercury or a mercury compd. contained in a hydrocarbon oil can be removed sufficiently by a simple method, i. e., by shaking ...
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JPH0470354B2 |
A process is disclosed for the removal of metals contaminants, particularly calcium, from hydrocarbonaceous feedstocks. The process comprises mixing the feedstock with an aqueous solution of a metals sequestering agent, particularly hydr...
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JPH04296392A |
PURPOSE: To simply and efficiently remove mercury (compound) in an oil by mixing a mercury (compound)-containing hydrocarbon oil into contact with an organic peroxide, then bringing the resultant mixture into contact with an acidic inorg...
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JPH04266989A |
PURPOSE: To extract aromatic hydrocarbons in high selectivity and high yield from a mixture of aromatic hydrocarbons and non-aromatic hydrocarbons in a hydrocarbon feed stream. CONSTITUTION: This selective solvent extraction of aromatic ...
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JPH0458519B2 |
Heavy oil derived from coal is diluted with organic solvent to a content of less than 10 weight percent of toluene-insoluble material. The mixture is then mixed with a non-aromatic solvent in a ratio of 1:3 to 5:1. With slow stirring of ...
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JPH0456077B2 |
A process for removing asphaltenes present in cat cracker bottoms or a pitch derived therefrom comprises (a) removal of 70 to 85 percent of the polynuclear aromatic oils present in the cat cracker bottoms or pitch, for example by vacuum ...
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JPH0454716B2 |
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JPH0452315B2 |
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JPH04227988A |
PURPOSE: To remove asphaltenes and metals, such as vanadium and nickel, at a low cost in a simple manner from crude petroleum, or a fraction thereof, contg. asphaltenes and such metals. CONSTITUTION: Crude petroleum or its fraction is br...
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JPH04211493A |
PURPOSE: To provide a novel method for treating raw material oil containing furfural and a petroleum purified middle distillate. CONSTITUTION: In a method for reducing the content of a furfural of a raw material containing furfural and a...
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JPH04139135A |
PURPOSE: To industrially and advantageously remove nearly the total amount of sulfur compounds by treating a hydrocarbon mixture containing the sulfur compounds with an N-alkylalkanolamine and then washing the resultant treatment product...
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JPH0422200B2 |
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JPH0482844A |
PURPOSE: To recover the objective compound by mixing an aqueous solution of an aromatic alcohol to a mixture containing methylnaphthalene, especially cracked light-oil fraction, to form a complex, stirring the aqueous layer after additio...
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JPH0482843A |
PURPOSE: To obtain the objective compound by mixing an aqueous solution of an aromatic sulfonic acid or its salt to a mixture containing naphthalenes, especially cracked light-oil fraction, to form a complex, stirring the aqueous layer a...
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JPH0482842A |
PURPOSE: To recover the objective compound by mixing an aqueous solution of a pyridine derivative to a mixture containing methylnaphthalene, especially cracked light-oil fraction, to form a complex, stirring the aqueous layer after addit...
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JPH0414720B2 |
There is proposed a process for the purification of fluorinated lubricants, free from hydrogen, such as perfluorinated ethers or chlorofluorocarbons, whose elimination can be dangerous for the environment owing to the fluorine release, s...
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JPH0411242B2 |
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JPH0415292A |
PURPOSE: To enhance the efficiency of solvent recovery to thereby prolong the operating time of the whole deasphalting plant by adopting specified steps. CONSTITUTION: Into deasphalting process are incorporated the step 1 of preparing re...
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JPH0411690A |
PURPOSE: To effectively reduce the content of mercury in liquid hydrocarbon for a long time by containing a liquid hydrocarbon containing a sparingly reactive mercury compound with metallic aluminum or metallic zinc to decompose it, and ...
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JPH041642B2 |
An improve tray means (30,40,50) and an extraction zone (10) utilizing the tray means (30, 40, 50) are disclosed. The tray means (30, 40, 50) comprises a tray deck, (34, 44, 55), a channel means (37,47,57), ans a weir means (38, 48, 58)....
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JPH0380522B2 |
An improved cascade weir type extraction zone (10) is described in which at least one of the weir means (38,48, 58) is disposed above the respective associated tray (30, 40, 50). This improved extraction zone (10) is of particular utilit...
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JPH03277691A |
PURPOSE: To effectively remove an organically bonded group IIA metal contaminant, particularly, Ca by bringing a hydrocarbonaceous supply raw material into contact with an aq. soln. of a specific metal separating agent to separate the me...
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JPH03259996A |
PURPOSE: To obtain a good yield of aromatic hydrocarbon by bringing a desulfurized naphtha fraction into contact with a specified catalyst to cause reaction, subjecting the reaction product to qas-liquid separation, and recovering an aro...
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JPH03223394A |
PURPOSE: To separate efficiently a dewaxing solvent and a dewaxed oil, by bringing a mixture containing a dewaxing solvent and a dewaxed oil into contact with a separation membrane made of a nonporous polyimine separation layer crosslink...
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JPH03196802A |
PURPOSE: To suppress corrosion of solvent extraction system by solvent- extracting aromatics with a solvent after treating aromatics with a solvent to extract and separate non-aromatics therefrom and by allowing the water used for washin...
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JPH0354718B2 |
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JPH03502342A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH03119092A |
PURPOSE: To provide a new water-in-oil emulsion prepd. by incorporating an aldehyde type dispersed water phase and a satd. hydrocarbon type continuous oil phase by a specified ratio. CONSTITUTION: An aimed water-in-oil emulsion prepd. by...
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JPH0330401B2 |
Process for solvent transmission from an extract/solvent mixture to a feed to be extracted, by passing the feed along one side of a membrane and the extract/solvent mixture along the other side thereof.
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JPH0324242B2 |
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JPH0324241B2 |
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JPH0374491A |
PURPOSE: To increase the conversion of vacuum residue by deasphalting unconverted vacuum residue in a recycled flow using a co-solvent thereby removing most of undesired settlings selectively. CONSTITUTION: Unconverted vacuum residue in ...
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JPH0316999B2 |
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JPH0316992B2 |
Polychlorinated biphenyls are removed from oil by extracting the biphenyls into methanol. The mixture of methanol and extracted biphenyls is distilled to separate methanol therefrom, and the methanol is recycled for further use in extrac...
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JPH0257595B2 |
A process for the simultaneous separation of aromatics and non-aromatics from a heavy hydrocarbon stream and a light hydrocarbon stream in which process: (a) aromatics are extracted in a first extractor from the heavy hydrocarbon stream ...
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JPH0251407B2 |
Disclosed is a method for recovering pure aromatic substances from a mixture of hydrocarbons containing both aromatic and non-aromatic fractions. The input mixture is fed through an extractive stage provided with a preliminary distillati...
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JPH0245672B2 |
1. A process for obtaining a conjugated diolefin from a mixture of C4 or C5 hydrocarbons which contains this diolefin, by single-stage or multi-stage extractive distillation using a selective solvent and recycling the latter to the extra...
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