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Patent Searching and Data


Matches 601 - 650 out of 777

Document Document Title
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 ...  
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 ...  
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 ...  
JPH04227989A
PURPOSE: To decrease the total amt. of C4- gases produced in a cracking process and increase the vol. and octant number of C5+ gasoline by combining the steps of cracking, deacidifying and fractionating intermediates, and refining interm...  
JPH0448837B2
Reentry disulphides are eliminated in a continuous process for treating a sour hydrocarbon stream by extracting the mercaptans contained in the hydrocarbon stream 1 with a disulphide-free alkaline solution in an extraction zone 3, oxidiz...  
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...  
JPH0472387A
PURPOSE: To separate and remove a sulfur content effectively, economically and simply, by treating a fuel oil such as gasoline or fuel oil with any of various oxidizing agent and raising the boiling point and the melting point of organic...  
JPH0412760B2
Regenerated sorbent employed for refining of heavy crude feedstocks is used to remove contaminants from specialized hydrocarbons, especially used motor oil. The simultaneous operation of a decontaminating unit supplied with regenerated s...  
JPH03229795A
PURPOSE: To make it possible that a vacuum distillation fraction can be used as a feed to a catalytic cracking apparatus by demetallizing a vacuum distillation fraction in a specified temperature range of a heavy fossil fuel to remove Ni...  
JPH0345310B2  
JPH0323588B2
A continuous process is disclosed for removing mercaptans from highly olefinic feed streams (1) by extraction with a regenerated aqueous alkaline solution (4). The aqueous extract solution is preferably regenerated (13) by oxidation of e...  
JPH031358B2
A process for converting Udex raffinate to a high octane fuel component by mild, liquid phase oxidation to a product of moderate to low acidity, distilling off a neutral oxidate, esterifying the acidic residue to a neutral product and co...  
JPH02504523A
PCT No. PCT/DE88/00501 Sec. 371 Date Feb. 20, 1990 Sec. 102(e) Date Feb. 20, 1990 PCT Filed Aug. 18, 1988 PCT Pub. No. WO89/01508 PCT Pub. Date Feb. 23, 1989.Used oils, especially used lube oils, after rough filtering are mixed with an a...  
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 ...  
JPH0237386B2
A process for eliminating and removing impurities including sulfur compounds and microorganisms as well as preventing further microbial contamination is accomplished by treating petroleum products or other hydrocarbon fluids with an aque...  
JPH0236157B2  
JPH0236158B2  
JPH0225952B2
Hydrostripping process which is the combination of crude oil distillation and hydrotreating of distillate overhead wherein crude oil is distilled with hydrogen rich gas at high temperature and under high pressure. Hydrogen partial pr...  
JPH0275698A
PURPOSE: To improve an octane value of gasoline and a smoke point of kerosene by using light gravity gasoline as an aromatic hydrocarbon re-extraction assisting solvent. CONSTITUTION: A hydrocarbon feed material with a final boiling poin...  
JPH0260943A
PURPOSE: To profitably recover silicon oil from a mixture of silicon oil, a polybiphenyl chloride, and chlorobenzene by flashing the mixture to a distillation area and a chlorobenzene to a tower top. CONSTITUTION: In the recovery of sili...  
JPH0237386A
PURPOSE: To vary the luminance of a luminous body with a constitution whose number of parts is small, and also, whose cost is low by providing the light emitting body for emitting a light beam in accordance with the input of a driving si...  
JPH0153318B2  
JPH0141676B2
Lubricating oils suitable for use in refrigeration equipment in admixture with fluorinated hydrocarbon refrigerants are produced by solvent extraction of naphthenic lubricating oil base stocks, cooling the resulting extract mixture, opti...  
JPH0133518B2  
JPH01113492A
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.  
JPS63200804A
Basic nitrogen compounds (BNC) are selectively removed from solvent extracted oils by adsorption of said BNC's by solid acidic polar adsorbents. The oils are extracted using any of the common extraction solvents, such as furfural, phenol...  
JPS6315888A
PURPOSE: To prevent the gummy and resinous matter from blocking intra-plant piping etc.; and to recover a high-quality fuel oil and a lubricant raw material, by adding a polyhydric alcohol to a distillate obtd. by thermal distillation of...  
JPS62292886A
PURPOSE: To run off a low-boiling oil component etc. at a low cost without using steam or a coke oven gas as a run-off agent, by providing a reboiler on the bottom of a run-off column and conducting distillation while maintaining the ope...  
JPS62279854A
PURPOSE: To enhance the quality of fuel oil, by a method wherein the fuel oil, especially, the fuel oil used in a diesel engine is allowed to pass through a purifying action process due to a purifying apparatus such as a decanter type ce...  
JPS6253040B2  
JPS62253690A
A process for enhancement of the cetane number of a diesel fuel which in one embodiment comprises: (1) treating a diesel oil with a nitrogenous treating agent in a nitrogen amount, equivalent on a 100% nitric acid basis, to about 10 weig...  
JPS62250092A
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.  
JPS62249936A
A process for separating the gas components contained in liquified natural gas wherein a small amount of heavier reflux liquid (propane, butane, pentane, iso-butane and iso-pentane) is recycled to the top of a demethaniser column. This a...  
JPS62250091A
A process for upgrading diesel oil comprising the stepsof:(1) reacting the diesel oil with a nitrogenous treating agent;(2) contacting the diesel oil from step (1) above with(a) a primary solvent selected from the group consisting of org...  
JPS62249937A
In a process for separating natural gas constituents, a portion (62) of the residue gas from a demethaniser column (32) is cooled, expanded, partially condensed and recycled (72) to the top of the column (32). This alters the chemical eq...  
JPS6251318B2
An improvement to a continuous solvent extraction-steam-distillation process for the recovery of aromatic hydrocarbons in the range of C6-C16from a feed stream containing such aromatics and aliphatic hydrocarbons in the range of C5-C16 w...  
JPS62232490A
Diesel range fuel is produced in excess of gasoline range fuel from virgin hydrocarbon oils having low carbon content by heat soaking under mild thermal cracking conditions carried out at low pressure wherein the cracked fractions are re...  
JPS62220585A
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.  
JPS62220586A
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 ...  
JPS62184097A
A process is disclosed for the working up of salvage oil, in which the salvage oil is subjected to an extraction under supercritical conditions. The halogen compounds contained in the produced extract are removed by catalytic hydrogenati...  
JPS6232731B2  
JPS6214600B2
For refining spent motor oils in order to recover lubricating bases to be reused, the stock to be refined is first stripped of water and light hydrocarbons, then a first extraction with a solvent (preferably a lower paraffin), heating th...  
JPS6158110B2
A process for effecting a deep cut in a heavy hydrocarbon material without a decrease in the quality of the extracted oil caused by the presence of undesirable entrained resinous bodies and organometallic compounds. The heavy hydrocarbon...  
JPS6155009B2
Waste oil on board ship is disposed of usefully by burning in the ship's steam raising boiler. Apparatus for rendering the waste oil burnable comprises a tank with waste oil and fuel oil and fuel oil inlets, a tank heater, a drain pipe a...  
JPS6154078B2  
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  

Matches 601 - 650 out of 777