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Patent Searching and Data


Matches 651 - 700 out of 782

Document Document Title
JPS6146518B2  
JPS6145680B2  
JPS6121590B2
A process for separating a solvent from a bituminous material by pressure reduction and steam stripping without carry-over of entrained bituminous material. The fluid-like phase of bituminous material and solvent is reduced in pressure a...  
JPS6121719B2  
JPS6121510B2  
JPS6121511B2  
JPS6116311B2
An energy efficient process for separating a hydrocarbonaceous material into various fractions. The hydrocarbonaceous material is admixed with a solvent and the mixture is introduced into a first separation zone maintained at an elevated...  
JPS6147793A
Hydrocarbon oils, particularly petroleum residua, are demetallized by contacting the oil first with an aqueous solution of a hypochlorite such as sodium hypochlorite or calcium hypochlorite and subsequently subjecting at least the oil fr...  
JPS615512B2
For removing acids from liquid hydrocarbons, these are treated with an aqueous base. The mixture of liquid hydrocarbons with the aqueous alkali is introduced into a bed which contains a hydrophilic medium, so that the aqueous phase dropl...  
JPS61878B2
A process for producing a pitch which can be utilized as a raw material for producing carbon fibers is disclosed. The process involves distilling a petroleum heavy residual oil under reduced pressure to produce a reduced pressure distill...  
JPS6058279B2  
JPS6052190B2  
JPS6051518B2  
JPS60186590A
Processing method for heavy crude oils contg. at least 7% of cpds. insol. inn-C5 hydrocarbons comprises: (i) atmospheric distn. (ii) extn. of the distn. residue (1 vol.) with aliphatic solvents (2-10 vols.) for removal of asphaltenes, C,...  
JPS6092390A
After the removal of water and volatile constituents, the spent oil is subjected to an alkali treatment and, if necessary after separating off a gas oil fraction, distilled. In this distillation, pure oil is separated off as distillate i...  
JPS6060189A
PURPOSE: To remove colored materials with simple equipment in a simple manner, by treating a colored material-contg. oil with an acid, removing pitch formed, applying voltage to the residual acid radical to ionize it and adsorbing it by ...  
JPS609549B2  
JPS59179588A
PURPOSE: To obtain easily a naphthenic lubricating oil having a high viscosity and low acid value, by neutralizing a naphthenic crude oil, etc. fully with an excess aqueous solution of caustic alkali, and distilling the resultant treated...  
JPS59174688A
PURPOSE: To separate and to purify a liquefied oil of coal simply, inexpensively and continuously, by passing the liquefied oil of coal through an adsorption column so that substances containing nitrogen and oxygen are removed, passing a...  
JPS5927792B2  
JPS5974185A
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.  
JPS5945389A
The recovery of hydrocarbon values from high metals content feeds can be carried out more efficiently via supercritical extraction with recycle of a portion of the asphalt product and proper control of the use of countercurrent solvent f...  
JPS592479B2  
JPS594686A
A process for purifying hydrocarbonaceous oils containing heteroatom sulfur and heteroatom nitrogen compound impurities comprising the steps of:(1) reacting said hydrocarbonaceous oil with an oxidizing gas containing at least one nitroge...  
JPS58187487A
PURPOSE: To separate and remove the finely divided ash from the coal liquefaction product, in high efficiency, by adding a specific acidic aqueous solution to the coal liquefaction product, stirring the mixture under heating, adding a wa...  
JPS58152090A
PURPOSE: To carry out the collection and treatment of heavy oil, economically and efficiently, by separating crude oil drawn from an oil well with a pump into heavy oil, etc. in a precipitation tank, heating and distilling the heavy oil,...  
JPS5833911B2
25859 Abstract of the Disclosure An integrated process universally applicable for the reclaiming of used lubricating oils, regardless of the contaminants or previous additive systems contained therein, is provided to produce an intermedi...  
JPS5893788A
PURPOSE: To effectively and easily separate oil and foreign matter in a sludge, by adding a chemical contg. a silicate and a polymer to an oil-contg. sludge and flocculating the sludge by causing aggregation and adsorption followed by pr...  
JPS5869288A
An integrated method for refining a hydrocarbon distillate fraction such as kerosene which has sulfur-containing compounds by washing the fraction with an alkaline solution and then sweetening the resulting distillate by treating it with...  
JPS5863785A
PURPOSE: To purify impurities, e.g. sulfur, even in a lubricating oil containing an additive for preventing the premature deterioration, by adding a detergent- dispersant in a specific proportion to the lubricating oil, and passing a DC ...  
JPS5857495A
PURPOSE: To enhance low-temp. fluidity of a lubricating oil to a large extent, by bringing a paraffinic lubricating oil which has been subjected to dewaxing by means of a physicochemical dewaxing process into contact with a microorganism...  
JPS585958B2
Multiple-stage separation of a mixed-phase product effluent resulting from the hydrocracking and/or hydrorefining conversion of a hydrocarbonaceous charge stock. Reaction product effluent is initially separated in a high temperature, hig...  
JPS5817193A
A process for reclaiming spent oil comprises the steps of removing water and light hydrocarbons, thermally treating the stripped oil, extracting it with a supercritical gas to insolubilize impurities and additives, separating the gas-ric...  
JPS584959B2
A re-refining process is described by which high-quality finished lubricating oils are prepared from used waste lubricating and crankcase oils. The used oils are stripped of water and low-boiling contaminants by vacuum distillation and t...  
JPS584759B2
A method for purifying and reclaiming used lubricating oils containing additives such as detergents, antioxidants, corrosion inhibitors, extreme pressure agents and the like and other solid and liquid contaminants by preferably first vac...  
JPS5757450B1  
JPS5747717B2  
JPS5747231B2  
JPS5746478B2  
JPS57155289A  
JPS57149388A  
JPS57139182A
A hydrocarbon feed for use in a catalytic conversion process that utilizes a zeolite catalyst, and that contains a catalytically deleterious impurity, is refined by contact with a zeolitic sorbent. The invention is applicable to dewaxing...  
JPS57133188A  
JPS57119985A
Following the separation of bitumen from tar sands by the hot water process to produce an aqueous bitumen emulsion from which the bitumen froth is separated to leave aqueous tailings containing some incompletely separated bitumen, the in...  
JPS57117590A
PURPOSE: To enable the reuse of oily sludge and liquid waste oil generated by the cleaning of an oil container as fuel oil, by separating the sludge from the waste oil, treating both materials separately, and mixing at a proper ratio. CO...  
JPS5729512B2
A catalytic process for treating a mercaptan-containing sour petroleum distillate is disclosed. The distillate is contacted with a weakly basic anion exchange resin to separate a portion of the mercaptan content and substantially all of ...  
JPS5729513B2  
JPS5729514B2  
JPS5720991B2  
JPS5711590B2  

Matches 651 - 700 out of 782