Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 351 - 400 out of 498

Document Document Title
JPH06157015A
PURPOSE: To obtain a pitch for carbonaceous materials having a high carbon yield without increasing the softening point by removing a component soluble in an aqueous solution of an alkali from a mixture containing one or more of coal tar...  
JPH0637622B2  
JPH0633361B2  
JPH06501722A  
JPH0625691A
PURPOSE: To make a hydrocarbon oil containing a small amount of halogenated aromatic compounds safely handleable by removing the halogen compounds therefrom. CONSTITUTION: A hydrocarbon oil mainly consisting of nonaromatic hydrocarbon oi...  
JPH0583595B2  
JPH0470354B2  
JPH0448837B2  
JPH04146994A
PURPOSE: To improve the ignitability and flammability of a fuel oil by sinking a specified hydrophilic bag in a light fuel oil and making absorbed and removing moisture present in the oil. CONSTITUTION: A hydrophilic bag contg. a water-a...  
JPH03217490A
PURPOSE: To inexpensively, readily and efficiently recover arsenic without eroding a device by bringing an arsenic-containing hydrocarbon into contact with an aqueous solution of water solution sulfide and then separating the resultant w...  
JPH03143993A
PURPOSE: To economically and practically remove oxygen from a hydrocarbon fuel and to improve thermal stability of the hydrocarbon fuel by a constitution wherein a strong reducing agent is continuously introduced into the hydrocarbon fue...  
JPH0390173A
PURPOSE: To obtain dehalogenizing agent convenient to handle, hard to oxidize nor hydrolyze by containing respectively specific amount of specific alkaline metal alcoholate, alcohol, specific polyether and non-halogen hydrocarbon oil. CO...  
JPH0323588B2  
JPH0232208B2  
JPH0214714A
PURPOSE: To efficiently remove org. sulfur compds. by absorbing and removing mainly CS2 in a first stage from a gas contg. CS2 and COS, then decomposing COS in a second stage, and absorbing in a third stage H2S generated in the second st...  
JPH0214713A
PURPOSE: To efficiently remove org. sulfur compds. in gas by bringing the gas into contact with a catalyst supporting diglycolamine to decompose the org. sulfur compds. and by absorbing and removing H2S produced by the decomposition. CON...  
JPH01304026A
PURPOSE: To selectively remove H2S from a fluid mixture contg. the H2S and CO2 at need by treating the fluid mixture with an aq. soln. contg. high purity triethanolamine. CONSTITUTION: The fluid mixture is treated by the aq. soln. contg....  
JPH01275692A
PURPOSE: To remove ash from a waste engine oil by making use of a simple apparatus to regenerate the waste engine oil as a fuel oil, by conducting a particular reaction of a waste engine oil in a batch reaction tank, roughly separating t...  
JPH01271487A
PURPOSE: To attain effective utilization of resources and obtain a regenerated oil with a high utility value, by a process comprising simultaneously adding phosphoric acid and a particular anionic surfactant or a nonionic surfactant to w...  
JPH0144237B2  
JPH01201391A
PURPOSE: To improve the yield of extraction, by adding an alkaline soln. to a tar acid-contg. hydrocarbon oil and conducting mixing and centrifugation to separate an alkaline tar acid soln. CONSTITUTION: A tar acid-contg. hydrocarbon oil...  
JPH01135896A
PURPOSE: To remove organic acids and inorganic salts and prevent a purifier from corrosion, by bringing an oil with a high total acid value into contact with a mixture solution of an organic amine or ammonia, alcohol and water. CONSTITUT...  
JP01113492A
PURPOSE: To improve the thermal stability of jet fuel sweetened by catalytic oxidation by washing the fuel with an aq. caustic alkali, then washing with water and drying the same. CONSTITUTION: The jet fuel is sweetened by prewashing the...  
JPS6470592A
PURPOSE: To inexpensively sweeten petroleum distillate by a catalyst with high activity and stability by separating and recirculating an alkaline phase containing the catalyst at a separation region after passing petroleum through a reac...  
JPH0113516B2  
JPS63503547A  
JPS6352078B2  
JPS63213593A  
JPS63159493A  
JPS6332836B2  
JPS6328117B2  
JPS6315886A
PURPOSE: To obtain the title neutralizing agent having excellent transfer characteristics into the precondensation section of distillation equipment of a petroleum refinery and an excellent effect of controlling corrosion, by using a spe...  
JPS62253690A  
JPS62250091A  
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 ...  
JPS62192179A  
JPS62164790A  
JPS62132507A  
JPS62128920A
PURPOSE: To obtain an inexpensive alkalifying agent capable of efficiently neutralizing oil, waste liquor or the like having high specific gravity, hardly injuring the human body and easy to handle by mixing powder of an inorg. compound ...  
JPS62106987A  
JPS6217388Y2  
JPS6146517B2  
JPS61500442A  
JPS615512B2  
JPS60186588A
PURPOSE: Sodium metal is added to tar oil containing impurities such as quinolines and they are heat-treated or the tar oil is distilled in the presence of sodium metal to effect selective hydrogenolysis of sulfur and nitrogen compounds....  
JPS60161482A
PURPOSE: To separate and fractionate the acidic oil and basic oil in liquefied coal oil, remarkably improving the separation selectivity of each component existing in these oils, by dissolving and extracting the acidic oil and basic oil ...  
JPS60156593A  
JPS6092390A  
JPS5946554B2  
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...  

Matches 351 - 400 out of 498