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Matches 401 - 450 out of 1,516

Document Document Title
WO/1997/011185A1
The invention relates to the discovery that the rate of reaction of the desulfurization of fossil fuels is enhanced by the addition of an oxidoreductase to the biocatalyst. The invention is drawn to a method for enhancing the rate of des...  
WO/1997/004042A1
Disclosed are methods for accelerating the settling of finely divided oil and water insoluble solids in hydrocarbon fluids using an effective amount of an alkylphenol ethoxylate compound. Preferably, the hydrocarbon is a fluid catalytic ...  
WO/1997/004043A1
A residuum feedstock (10) is upgraded in a short vapor contact time thermal process unit (11) comprised of a horizontal moving bed of fluidized hot particles. The resulting upgraded product (14) is then fed to a fluid catalytic cracking ...  
WO/1996/041070A1
A process for enhancing the fuel form, raising the energy content, and lowering the level of impurities of low rank coals and/or carbonaceous wastes, like Municipal Solid Waste (MSW), Refuse Derived Fuel (RDF), and sewage sludge, by prov...  
WO/1996/040841A1
The invention pertains to the separation of different substances, more specifically, to a method and device for the filtration, degassing and dehydration of, and removal of ageing products from insulation and other petroleum oils. The te...  
WO1996022260A3  
WO/1996/033011A1
Disclosed are a method and apparatus for conditioning hydrocarbon liquids by applying mechanical vibrations before fractionation. The method involves introducing the liquid into a cavity (1) in a rotating wheel (2), expelling the liquid ...  
WO/1996/028388A1
A method for recuperating crude oil from the body of a spill. First, the body of the spill is sprayed at low pressure then the same operation is done at a relatively higher pressure of at least 100 psi. After the dispersant is allowed to...  
WO/1996/025471A1
Petroleum acids, e.g., naphthenic acids, are removed from crudes or crude fractions by thermal treatment.  
WO/1996/023853A1
High-vacuum oil refinery systems and process are disclosed in this invention. The systems and process enable to carry out vaporization and distillation of oils under the condition of 1 - 10-4 Torr of high vacuum and at the temperature of...  
WO/1996/023854A1
An oil reclamation device includes an evaporator head (11) and base (12) and defines an evaporator chamber (6) between them. An upwardly vertical extending heating element (18) is disposed within the evaporator base for heating oil conta...  
WO/1996/022260A2
In a process for separating linear from branched hydrocarbons, the feed is brought in contact with a carbon membrane with critical size from 0.39 to 0.55 nm. The isomer with the larger size remains on the feed size. A membrane can be pro...  
WO/1996/005903A1
A device for purifying gasoline by separating the paraffins and varnishes that cause air pollution when burned through an internal-combustion engine. The device includes an inlet fitting (1), either a removable cap (2) or a non-removable...  
WO/1995/031516A1
The invention relates to a method of separating a multiple phase liquid medium comprising a first liquid phase and a second liquid phase wherein the medium is contacted with a first filter, said filter having been wetted by a wetting age...  
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/1995/014850A1
Disclosed is a method and system for recovering energy from low-grade fuels such as industrial, municipal and agricultural waste, low-grade carbonaceous fuels such as lignite and similar solid fuels in which the fuel is comminuted into s...  
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/1995/007134A1
To remove acid components, such as mercaptans, from liquid hydrocarbons, such as light oil fraction, a stream of hydrocarbon (2, 3) and a stream of an aqueous alkali solution (4, 5) are fed either side of a porous membrane, the pores of ...  
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/1994/015689A1
A combination filter and evaporator unit (10) for use in small engine applications includes a filter member (12) that is screw threadedly engaged to the evaporator unit (14) to facilitate replaceement of filter media (18) as needed. The ...  
WO/1994/013756A1
This invention relates to a method for ultrafiltering heavy hydrocarbons containing detrimental qualities of metals and CCR, said method comprising feeding the heavy hydrocarbons to a first ultrafiltration stage wherein the feed is conta...  
WO/1994/010114A1
The present invention is a process for the recovery of normal alcohols, especially C1-C20 n-alcohols, preferably n-C4-C14 alcohols, most preferably n-C6-C11 alcohols from n-paraffins by means of pervaporation through a membrane. The alco...  
WO/1994/007592A1
The selectivity of a membrane pervaporation aromatics/non-aromatics separation process is unexpectedly improved by the recycle of permeate to the separation process for co-processing with fresh feed. The selectivity obtained is greater t...  
WO/1994/007587A1
The invention deals with filtering and processing polluted liquids, in particular used oil, but also creosotes or coolants or cooling water. The aim of the invention is to provide a compact, portable and economic device having however a ...  
WO/1994/007972A1
Straight run hydrocarbon distillate streams containing low concentrations of 2-ring aromatics can be processed to remove a high percentage of the 2-ring aromatics by contacting said stream with one side of a polyester imide membrane unde...  
WO/1993/004143A1
Hard asphalts exhibiting acceptable penetration and low temperature properties can be produced from vacuum residua from which such hard asphalts are not normally obtainable via typical vacuum distillate such as that derived from Arab Lig...  
WO/1992/022624A1
Apparatus for reclaiming a useful oil product has an evaporation chamber, including an inlet for the waste oil, and an outlet for the vaporized oil, as a useful oil product. Burners are provided for heating the evaporation chamber to vap...  
WO/1992/019376A1
A demetallization process for catalysts used for chemical conversion of hydrocarbons, the catalysts containing at least vanadium as a metal poison, wherein the poisoned catalyst is contacted in a sulfiding zone with a sulfiding agent and...  
WO/1992/017427A1
The separation of aromatic hydrocarbons from mixtures of aromatic and non-aromatic hydrocarbon feeds under pervaporation conditions, is improved by the control of the amount of oxygen present in the feed. The amount of oxygen in the feed...  
WO/1992/016478A1
A semi-permeable membrane process of separating impurities from a hydrocarbon mixture. A fuel gas sweep gas is used to purge and dilute the permeate. Because this reduces the partial pressure of the impurities, the driving force for perm...  
WO/1992/010276A1
A multi-block polymer comprising an oxazolidone prepolymer chain extended with a second compatible prepolymer, the membrane made therefrom and the use of said membrane in aromatics/non-aromatics separations is disclosed. The multi-block ...  
WO/1992/010274A1
The present invention is directed to a multi-block polymeric material comprising a first amide acid prepolymer, made by combining A) a diamine with B) a dianhydride or its corresponding tetraacid or diacid-diester in an A/B mole ratio ra...  
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/1992/007649A1
A dimensionally stable, composite membrane of a microporous film in laminar contact with a continuous perfluoro ion exchange resin layer is provided. The composite membrane comprises a continuous perfluoro ion exchange polymer layer whic...  
WO/1992/007921A1
The invention relates to a process and installation for producing liquid fuels and raw chemicals from petroleum as part of a refinery process with processing stages for distillation, thermal and/or catalytic cracking and reformation wher...  
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/1991/018676A1
Cyclone separator for the stabilization of gas or vapour saturated fluid or a fluid mixture. The fluid phase is led from one separator chamber (14) to a second chamber (15) at a lower pressure, through one or more nozzle ducts (18) in or...  
WO/1990/012633A1
The invention concerns a method of breaking oil/water emulsions by the addition of cationic polymers. The method is characterized by the fact that a synthetic cationic organic polymer made from (a) 5-70 % by wt. of a monomer of the gener...  
WO/1989/001508A1
Used oils, in particular spent lubricating oils, are coarse filtered and then mixed with an aqueous solution of sodium or potassium silicate and an aqueous solution of polyalkylene glycol at high temperature with stirring. The mixture ob...  
WO/1988/003836A1
Apparatus for treating asphaltene bearing fuels, and a method for treating asphaltene bearing fuels. Known apparatus for treating asphaltene bearing fuels suffer from the drawback of not being able to sufficiently reduce the size of unde...  
WO1987005822A3  
WO/1987/005822A2
Oil emerging from a storage tank and containing all forms of pollution is placed in extensive surface contact with an underlying washing liquid having a greater specific gravity, on to which it diffuses, gives up to it material soluble t...  
WO/1986/000242A1
A filter assembly (10) and associated filter unit (12) includes a repelling-action filter media (52) for use in vacuum or suction side fuel filter applications. In particular, the filter unit is a screw on unit with centrally located thr...  
WO/1980/002381A1
The rate of filtration of a coal liquid slurry is increased by adding polyisobutylene and an alcohol containing 2 to 10 carbon atoms to the slurry prior to filtration or by adding the alcohol to the slurry and washing a precoat cake of f...  
WO/1980/002383A1
The rate of filtration of a coal liquid slurry is increased by adding an ethylene vinyl acetate copolymer and an alcohol containing 2 to 10carbon atoms to the slurry prior to filtration or by adding the alcohol to the slurry and washing ...  
WO/1980/002384A1
The rate of filtration of a coal liquid slurry is increased by adding polyisobutylene to the slurry prior to filtration or by washing a precoat cake of filter aid with an oil solution of polyisobutylene prior to filtration.  
WO/1980/002386A1
The rate of filtration of a coal liquid slurry is increased by adding an alkylmethacrylate copolymer and an alcohol containing 2 to 10 carbon atoms to the slurry prior to filtration or by adding the alcohol to the slurry and washing a pr...  
WO/1980/002382A1
The rate of filtration of a coal liquid slurry is increased by adding ethylene vinyl acetate copolymer to the slurry prior to filtration or by washing a precoat cake of filter aid with an oil solution of ethylene vinyl acetate copolymer ...  
WO/1980/002385A1
The rate of filtration of a coal liquid slurry is increased by adding an alkylmethacrylate copolymer to the slurry prior to filtration or by washing a precoat cake of filter aid with an oil solution of the alkylmethacrylate copolymer pri...  
WO/1980/001388A1
Process for desalting fuel oil by mixing the fuel oil with clean water to thereby separate and remove sodium and potassium salts contained in the fuel oil, comprising the steps of separating and removing the heavy content and salt-contai...  

Matches 401 - 450 out of 1,516