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Matches 251 - 300 out of 902

Document Document Title
WO/2000/027957A1
The invention relates to a method for reprocessing waste oils and producing high-grade base oils, whereby waste oil is treated by means of distillation, thin-film evaporation in a high vacuum, optional fractionation for separation into l...  
WO/2000/024845A1
The invention relates to a process for enhancing demetallation of metals containing hydrocarbonaceous feedstocks by contacting a metals containing hydrocarbonaceous feedstock at a sufficient temperature and pressure with an additive cont...  
WO/2000/015734A1
Sulfur-containing carbonaceous materials are desulfurized by reaction with a mixture of an oxidizing agent and an oxygenated solvent such as diethyl ether under alkaline conditions at a temperature preferably ranging from ambient tempera...  
WO/2000/014182A2
A product of reduced sulfur content is produced from a feedstock which is comprised of a mixture of hydrocarbons and includes sulfur-containing aromatic compounds as unwanted impurities. The process involves separating the feedstock by f...  
WO/2000/009631A1
The instant invention is directed to a process for reducing organic acids in petroleum feeds containing organic acids comprising: (a) thermally treating a petroleum feed containing organic acids in a thermal reaction zone comprising a pl...  
WO/2000/001929A1
A combined cycle power generating system in which power generating efficiency is increased when a combined cycle power generation is performed by using normal pressure residue oil obtained by distilling stock oil at normal pressure by a ...  
WO/1999/038936A1
Bromine reactive hydrocarbon contaminants are removed from aromatic streams by first providing an aromatic feedstream having a negligible diene level. The feedstream is contacted with an acid active catalyst composition under conditions ...  
WO/1999/032577A1
Severely contaminated white mineral oils which fail the RCS specification are treated using an acid-treated bentonite clay, such as Tonsil CO 630G. The white oil products produced in the treatment may be a USP grade white oil.  
WO/1999/025497A1
Refinery waste feedstock is screened in a screen (14) to remove large particles and is diluted to less than 5 % solids weight percent to form a first slurry which is agitated and heated to 180 degrees Fahrenheit in a conditioning vessel ...  
WO/1999/019425A1
A process for upgrading heavy crude oil production is described which involves adding a diluent, or solvent, which is a light hydrocarbon to reduce the viscosity and specific gravity of the crude oil being processed. After dilution, the ...  
WO/1999/011740A1
An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The improved process comprises the steps of...  
WO/1998/044075A1
A process for reducing the Mutagenicity Index and/or the PCA content of a lubricating oil extract by re-extracting a lubricating oil extract with a second extraction solvent, different from the first extraction solvent, to form a seconda...  
WO/1998/041596A1
The invention concerns a method of purifying contaminated liquids, adsorbents which adsorb the contaminants being added to the liquid. A plurality of adsorbent particles are agglomerated with the contaminants adsorbed therein/thereon to ...  
WO/1998/037991A1
Friable solid material contaminated by oxidizable hydrocarbons such as petrochemicals is delivered into a system wherein the material is subjected to a series of physical and chemical reactions to separate the contaminants from the solid...  
WO/1998/027031A1
A two-stage process for obtaining a substantial amount of olefinic product from a residua feedstock includes a first stage and a second stage. The first stage, having a short residence time, includes a thermal process unit containing a r...  
WO/1997/031693A1
The present invention relates to a method for separating liquid from a slurry (10) of solid particles and liquid contained in a vessel (1) in the presence of a gas, which comprises degasifying (12) the slurry and passing the degasified s...  
WO/1997/000926A1
A method for controlling the manufacture of lubricating oils involving the steps of distillation, extracting, dewaxing and optionally hydrofining; or for controlling operating units associated with refinery or chemical processes with fee...  
WO/1996/033621A1
Pre-treatment sorbents suitable for sorptive pre-treatment of edible oils prior to bleaching are produced by mixing a clay mineral composition with a dry granular organic acid.  
WO/1996/014369A1
The present invention provides a process for obtaining a very clean mesophase pitch from isotropic pitch. This invention utilizes a solvent fractionation process which does not involve the process steps, yield loss and waste generation a...  
WO/1996/007713A1
A process for catalytically desulfurizing cracked fractions in the gasoline boiling range to acceptable sulfur levels uses an initial hydrotreating step to desulfurize the feed with some reduction in octane number, after which the desulf...  
WO/1995/028458A1
A method of reducing the mutagenicity effect in a petroleum product having a high aromatic nature, said method including the step of subjecting the petroleum product to an oxidation process.  
WO/1995/022589A1
A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 725 degrees Fahrenheit (4), cooling the heated oil (6), adding an o...  
WO/1995/021902A1
A process comprising combining the heavy oil still residue and propane in conduits (146) and pumping mixture through static mixer (300). The mixture is then passed through heat exchanger (301) and flows via (302) to an extraction vessel ...  
WO/1995/008606A1
The pervaporative treatment of hydrocarbon feeds which have been exposed to air or oxygen and which contain mixtures of aromatic and non-aromatic hydrocarbons to selectively separate the feed into an aromatics rich stream and a non-aroma...  
WO/1994/025540A1
The invention relates to a process for the removal of mercury and/or other heavy metals from a cracker feed with the aid of an adsorbent. The process is characterized in that the feed is also subjected to magnetic filtration.  
WO/1994/016036A1
Low sulfur gasoline is produced by fractionating in a fractionator (10) a sulfur-containing naphtha into a low boiling fraction in which the majority of the sulfur is present in the form of mercaptans and a higher-boiling fraction in whi...  
WO/1994/010262A1
Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization in a reactor zone (12) and treatment over an acidic catalyst, preferably an intermediate por...  
WO/1994/007798A1
Process to re-refine used oils, wherein the oils (A1) are initially subjected to a pretreatment (A) with a basic reagent (A2), then to a first preflash treatment (B) to eliminate the water (B1) and the most volatile fractions (B2) contai...  
WO/1993/000414A1
A process for the production of a substantially non-carcinogenic material from a reduced hydrocarbon crude feedstock, said material being selected from deasphalted oil and bright stock extract comprising: passing the reduced feedstock in...  
WO/1992/010448A1
Raffinate yield from solvent extraction is improved when the extract phase (5) recovered from the solvent extraction process (2) is subjected to a membrane separation step (6) wherein a saturates/1-ring aromatics rich retentate (8) is pr...  
WO/1992/008770A1
Commercially valuable oil is recovered from refinery-produced, Resource Conservation and Recovery Act classified, hazardous waste oil sludges by a series of volatilizing and condensing steps (which may vary depending on the oil, water, a...  
WO/1992/004424A1
Commercially valuable oil is recovered from refinery-produced, Resource Conservation and Recovery Act classified, hazardous waste oil sludges by a series of volatilizing and condensing steps (which may vary depending on the oil, water, a...  
WO/1991/007475A1
A method and apparatus for the improvement of storage stability of oils contacts them with an at least partly organic solvent solution comprising an oxidising agent and an acid and then separates said oil and solution. The solvent is who...  
WO/1990/010048A1
A solvent extraction process for separating a heavy hydrocarbon feedstock material into its various component parts. The process comprises the utilization of pressure reduction to enhance the separation and recovery of a deasphalted oil ...  
WO/1986/004082A1
The separation of aromatic and nonaromatic hydrocarbons containing hydrocarbon feed is provided by use of an extraction separation process using mixed extraction solvents. The term ''mixed extraction solvent'' as used herein shall mean a...  
WO/1984/001310A1
Process and apparatus for cracking light hydrocarbon feedstock and heavy hydrocarbon feedstock in a combined system. The light hydrocarbon feedstock is completely cracked while the heavy hydrocarbon feedstock is partially cracked with a ...  
WO/1981/001413A1
Procede pour l'elimination et l'extraction d'impuretes comprenant des composes de soufre et des micro-organismes ainsi que de prevention d'une contamination microbienne ulterieure mise en oeuvre en traitant les produits petroliers ou d'a...  
JP2017193662A
[Subject] Improve a yield of C8 aromatic hydrocarbon, stopping energy consumption of a purification process of crude light oil. [Means for Solution] An extraction process in an extraction column which carries out liquid-liquid extraction...  
JP6215826B2  
JP2017527681A
大型貨物船の燃料に使用されるバンカー油か ら硫黄及び他の汚染物質を浄化するためのシ ステム及び方法について説明する。好ましく は、システムは、油及び水のエマルジョ...  
JP6186005B2  
JP2017523265A
A method for extracting a heterocyclic compound, an organic metallic compound, and polynuclear aromatic hydrocarbon from hydrocarbon charging stock, such as crude oil or a rough fraction, is provided. A heterocyclic compound and an organ...  
JP6170133B2  
JP6133902B2  
JP6114285B2  
JP2017061652A
[Subject] Provide a manufacturing method of a gasoline base material which makes it possible to obtain a gasoline base material which has sufficient octane number, fully collecting aromatic hydrocarbon from materials of a gasoline base m...  
JP6046713B2  
JP6033302B2  
JP6033551B2  
JP6017130B2  

Matches 251 - 300 out of 902