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WO/2000/069991 |
The present invention relates to the removal of mercury and other heavy metals from a hydrocarbon feedstream. The process involves contacting the hydrocarbon feedstream with a feedstream-soluble sulfur compound and then contacting the hy...
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WO/2000/068342 |
The invention concerns a method for obtaining oil products such as diesel fuel with improved quality, from a gas oil fraction containing organosulphur compounds such as dibenzenethiophenes and/or their derivatives, with initial and final...
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WO/2000/063321 |
The present invention provides apparatus and a process capable of reducing the sulphur content of the gasoline product resulting from the cracking of a high molecular weight hydrocarbon feed comprising sulphur which comprises at least th...
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WO/2000/052115 |
A process for the production of a process oil, the process comprising: a) contacting a petroleum distillate with a polar solvent in an extraction column which operates with a bottom temperature of 30 to 80°C, b) withdrawing a primary ra...
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WO/2000/039251 |
The invention is a process of removing solids, particularly catalyst fines, from an asphaltene-containing hydrocarbon liquid. The process comprises contacting an asphaltene-containing hydrocarbon liquid with a solvent to create a mixture...
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WO/2000/027957 |
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...
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WO/2000/024845 |
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...
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WO/2000/015734 |
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...
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WO/2000/014182 |
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...
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WO/2000/009631 |
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...
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WO/2000/001929 |
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 ...
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WO/1999/038936 |
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 ...
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WO/1999/032577 |
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.
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WO/1999/025497 |
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 ...
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WO/1999/019425 |
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 ...
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WO/1999/011740 |
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...
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WO/1998/044075 |
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...
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WO/1998/041596 |
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 ...
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WO/1998/037991 |
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...
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WO/1998/027031 |
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...
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WO/1997/031693 |
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...
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WO/1997/000926 |
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...
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WO/1996/033621 |
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.
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WO/1996/014369 |
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...
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WO/1996/007713 |
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...
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WO/1995/028458 |
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.
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WO/1995/022589 |
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...
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WO/1995/021902 |
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 ...
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WO/1995/008606 |
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...
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WO/1994/025540 |
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.
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WO/1994/016036 |
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...
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WO/1994/010262 |
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...
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WO/1994/007798 |
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...
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WO/1993/000414 |
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...
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WO/1992/010448 |
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...
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WO/1992/008770 |
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...
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WO/1992/004424 |
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...
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WO/1991/007475 |
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...
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WO/1990/010048 |
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 ...
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WO/1986/004082 |
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...
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WO/1981/001413 |
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...
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JP2013153710 |
To provide a means for selectively extracting hydrocarbon produced by hydrocarbon producing microorganisms, with a high yield even from aqueous slurry that contains a large amount of hydrocarbon producing microorganisms.A method for prod...
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JP2013100466 |
To provide a multistage sulfur removal system and to provide a process for an auxiliary fuel system.The system for producing an auxiliary fuel stream containing a low concentration of sulfur compounds from a primary fuel stream includes ...
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JP2013056066 |
To provide a method and apparatus for detoxicating halogen compound-containing oil, capable of more effectively neutralizing dehalogenated oil.The apparatus 1 for detoxicating PCB-containing insulating oil has a holding tank 11 for holdi...
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JP2012111954 |
To provide a process for making a lubricant or lubricant component, wherein the process includes a step of forming an alkylated oligomeric product having low olefin content, a cloud point less than -50 °C, a viscosity index of at least ...
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JP2011254867 |
To provide de-toxifying equipment for PCB mixed-in insulating oil, purifying the PCB mixed-in insulating oil containing impurity without generating waste, waste liquid and drainage to stably de-toxify the PCB mixed-in insulating oil, and...
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JP2011241321 |
To provide a method for desulfurizing a hydrocarbon, by which sulfur components in the hydrocarbon can be removed at ordinary temperature and at the atmospheric pressure at a higher rate.The method for desulfurizing the hydrocarbon inclu...
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JP2011231332 |
To reduce the capital invested to an apparatus by combining a caustic-prewashing section, an extractor, a sedimentation separation tank and a sand filter constituting the apparatus, in the apparatus and a method for extracting sulfur com...
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JP2011001503 |
To provide a new method for manufacturing reclaimed oil using waste oil or regenerated heavy oil as a raw material, which method reduces an amount of concentrated sulfuric acid, caustic soda, and white clay required for regeneration, com...
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JP2010229316 |
To provide a method of manufacturing by a high yield an aromatic group-containing base oil having a high flash point and a low glass transition point with the carcinogenic substance content reduced while maintaining a high total aromatic...
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