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Patent Searching and Data


Matches 651 - 700 out of 902

Document Document Title
JPS6438494A
PURPOSE: To partially condense a hydrocarbon gas mixture while improving its characteristics of thermal conductivity and separating properties by heat-exchanging between a first and a second part of the condensate of the hydrocarbon gas ...  
JPS6436688A
PURPOSE: To obtain a large amount of the titled colorless oil, useful as an oil for refrigerator and an electrically insulating oil, having excellent low- temperature fluidity, solubility and stability in high yield, by treating an extra...  
JPS6424892A
PURPOSE: To effect fine desulfurization with an excellent operability without need of a reducing column and a Claus reactor column, by contacting a high-temp. crude gas generated in a gasification furnace with a first desulfurizing agent...  
JPS63291618A  
JPS63213593A  
JPS63200804A  
JPS6337195A
PURPOSE: To carry out fractional distillation of hydrocarbon efficiently without danger of explosion, by sending a hydrocarbon blend to a distillation device having a low-pressure first column and a high-pressure second column, circulati...  
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...  
JPS62292885A
PURPOSE: To efficiently recover a low-boiling oil and naphthalene contained in a coke oven gas, by distilling off naphthalene together with a low-boiling oil from the run-off column head, feeding the distillate into a low-boiling oil col...  
JPS62285985A  
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...  
JPS62273289A  
JPS6253040B2  
JPS62253690A  
JPS62250092A  
JPS62249936A  
JPS62250091A  
JPS62249937A  
JPS6251318B2  
JPS62243685A  
JPS62232490A  
JPS62232489A  
JPS62220585A  
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  
JPS62164790A  
JPS6232731B2  
JPS6295387A  
JPS62500791A  
JPS6214600B2  
JPS6268895A  
JPS6158110B2  
JPS6155009B2  
JPS6154078B2  
JPS6146518B2  
JPS6145680B2  
JPS6121590B2  
JPS6121719B2  
JPS6121510B2  
JPS6121511B2  
JPS6189215A
PURPOSE: To effect the selective separation of the titled polymer, and to obtain debituminized oil, by adding a solvent selected from specific hydrocarbons or ketones to the thermal cracking residue of naphtha at a specific ratio, and ri...  
JPS6116311B2  
JPS6147793A  
JPS615512B2  
JPS6128583A
PURPOSE: To refine a base oil without corroding the instrument and causing environmental pollution by drain, by recycling part of a oil fraction, obtd. by subjecting a lubricating base oil to a specified treatment, to a steam stripping c...  
JPS61878B2  
JPS6058279B2  
JPS60252693A
PURPOSE: To obtain an extender of a fuel heavy oil, utilize effectively residual solid as an assistant fuel and detoxicate the residual ash thereof, by dehydrating ship bottom residual oil under specific conditions by heating with oil, a...  
JPS60248795A
PURPOSE: Fine particles of metals in waste oil are removed by adsorption, centrifugation, filter press, etc. step by step, finally a trace amount of metal powder of finest particle sizes remaining is recovered by means of static oil clea...  

Matches 651 - 700 out of 902