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WO/1998/014534A1 |
The present invention is a process to remove a +2 ionic charged metal from a petroleum feed. The process includes contacting feed with carbon dioxide at a temperature between 40 �C and 200 �C and autogenous pressure. In a preferred e...
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WO/1998/011971A1 |
A feed stream (12) of asphaltene-containing residual oil is processed by contacting the feed stream with a solvent (13) to form a first primary liquid stream (14) containing deasphalted oil and some solvent, and a second primary liquid s...
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WO/1997/047707A1 |
The invention concerns a method of preparing low-sulphur aliphatic compounds from olefin-rich starting products contaminated with organic sulphur compounds, by liquid-liquid extraction with a morpholine-containing extraction liquid.
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WO/1997/034966A1 |
A solvent recovery section is shown in section (100). The liquid product stream of solvent-containing asphaltene in line (121) is heated by an external source in heat exchanger (124) to form a heated product stream which is applied to le...
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WO/1997/021786A1 |
Power is generated in an organic Rankine cycle turbine (115) by expanding a stream of solvent vapor (112) produced by a flash drum in a deasphalting unit to produce a stream of expanded solvent vapor (118) that is combined with a stream ...
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WO/1997/013567A1 |
An extraction method is disclosed, wherein organic impurities are removed from a phase essentially comprising sulfuric acid, by means of supercritical or liquid carbon dioxide. In particular, the spent sulfuric acid from a process for pr...
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WO/1997/009291A1 |
A process to improve the performance of furfural for aromatics extraction from gas oils and lube distillates by the addition of ethers and/or aldehydes, preferably having a dielectric constant less than about 40 25 �C.
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WO/1997/007082A1 |
Minor amounts of C3-C4 hydrocarbons from amine absorbents used in removing H2S from liquid C3-C4 hydrocarbon are recovered. The process features recovery of the C3-C4 hydrocarbon in a hydrocarbon gas from a second absorption zone where H...
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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...
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WO/1996/011225A1 |
Production of oxalkylates of oligoamines or polyamines in a two-stage process in which, in the first stage, a molecule of alkylene oxide per NH group is added to the oligoamine or polyamine in the presence of water, alcohols or acids or ...
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WO/1996/010618A1 |
A Process and system for converting petroleum residue ("resid") into a liquid product and a solid product. The resid (10) is first mixed with a solvent (16) having a generally nonpolar molecular character. A strong electric field is then...
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WO/1996/003198A1 |
Process and apparatus for desulfurizing the gaseous product of the vacuum distillation of the heavy fraction of crude oil. The initial gaseous mixture (8) to be desulfurized is an incondensible gas that contains hydrogen sulfide. A gas-l...
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WO/1995/032801A1 |
This invention relates to a process for improving the effectiveness of a refinery process catalyst. The process comprises treating the refinery process catalyst with an effective amount of reducing agent selected from the group consistin...
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WO/1995/033017A1 |
This invention relates to a process for reducing the sulfur in a refinery process stream and/or crude oil, which comprises treating said refinery process stream and/or crude oil with an effective sulfur reducing amount of a reducing agen...
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WO/1995/024981A1 |
Non-ionic pollutants are removed from the soil by contacting the soil with a mixture of a particulate material having an anionic surfactant absorbed to a magnetic oxide. The surfactant complexes through the anionic charge to the magnetic...
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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 ...
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WO/1995/019946A1 |
The present invention is a method for removing nitrile contaminants from C5 streams. In particular, a C5 stream (10) is washed in a countercurrent fashion with a mixture comprising 50 % methanol and 50 % water (18) to extract the nitrile...
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WO/1995/014752A1 |
The present invention relates to a method for purification of oil which is contaminated with particles of random density and/or water. A collection polymer or polymer mixture which is insoluble in oil and liquid at room temperature and w...
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WO/1995/007248A1 |
Aromatic hydrocarbons are selectively extracted from lube oil stocks comprising mixtures of same with non-aromatic hydrocarbons using tetramethyl sulfoxide as the extraction solvent. The oils so extracted are the heavier oils, those boil...
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WO/1994/017155A1 |
A treatment of waste petroleum (60, 70) is disclosed by decoupling association of the petroleum component to contaminants by solvent treatment (92, 94) of the petroleum component, followed by ultrasonic treatment (59, 71), separating the...
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WO/1994/002209A1 |
A process and device are disclosed for cleaning in particular PCB-contaminated electric appliances (10) such as transformers filled with a fluid. The device has a fluid circuit (14), a distillator (34) for cleaning the fluid, a mixer (22...
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WO/1993/025635A1 |
A method of removing halogenated aromatic compounds contained in small amounts in a hydrocarbon oil comprising mainly nonaromatic hydrocarbon oils safety without fail. The method comprises bringing the hydrocarbon oil into contact with a...
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WO/1993/023131A1 |
In a solvent recovery plant comprising a recovery tower (4) from which solvent product is recovered overhead, an isothermal separator, preferably a cyclone (13), is used to separate liquid phase contaminant (i.e. oil in a lubricating oil...
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WO/1993/003115A1 |
The impurity content, e.g. propionitrile, in a fraction containing C5 or C6 tertiary olefins obtained by cracking hydrocarbons is reduced by distilling with an alkanol and removing the impurity as a higher boiling point fraction.
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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...
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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...
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WO/1992/003520A1 |
A process for separation and removal of stable polycyclic aromatic dimer foulants from refinery process streams by blending a paraffin stream (10) with a portion of heavy effluent (11) from a hydrocracking reactor (48) to induce precipit...
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WO/1992/002278A1 |
A method and compositions for removal of polychlorinated biphenyls (PCBs) from a surface by treatment of the surface with an extraction solvent, an encapsulating solution and an aqueous wash are disclosed. The extraction solvent includes...
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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 ...
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WO/1990/007467A1 |
Methods are disclosed for selectively reducing the levels of hydrogen sulfide and organic sulfides from gaseous and/or liquid hydrocarbon streams, particularly natural gas streams, compromising contacting the streams with a composition c...
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WO/1990/006350A1 |
Process for the extraction of a hydrocarbonaceous filler by using an organic solvent. The hydrocarbonaceous filler is first placed in the form of an hydrocarbonaceous emulsion in water, characterized in that the process is performed in t...
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WO/1989/000332A1 |
The invention concerns devices, processes, and treatment products for bursting into elements, in particular electric transformers having contained PCB or other chlorinated or halogenated derivatives or oils contaminated by PCB, and for d...
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WO/1988/009225A1 |
The decontamination is carried out ''in situ'' by spraying a solvent inside the sealed tank. The transformer (1) is fixed to a vibrating table (2). The solvent laden with PCB is collected, distilled and recycled. The orientated vibration...
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WO/1988/000849A1 |
A method and apparatus for cleaning and reclassifying electrical apparatus designed for use with PCB fluid electrolytes which is capable of operation on the site of the equipment being cleaned and while said equipment is energized.
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WO/1987/006255A1 |
Asphaltenes are separated from hydrocarbon oil by bringing the oil into contact with formic acid or a water-soluble organic acid consisting of carbon, hydrogen, and oxygen and having at least two functional groups.
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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...
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WO/1985/003516A1 |
Said process for the desulphuration of fuel oils comprises the addition to washing water of a catalyst solution comprised of: 1.5-15.0 g of calcium hydroxide, 60.0 g of polyethylene glycol having a molecular weight comprised between at l...
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WO/1985/002937A1 |
Method for replacing a coolant containing PCB in electrical induction apparatus having a tank containing the PCB-containing coolant and an electrical winding and porous solid cellulosic electrical insulation immersed in the PCB-containin...
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WO/1985/001955A1 |
The level of halogenated aromatics is reduced in a hydrocarbon stream by treatment with an alkaline reactant in a sulfoxide solvent.
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WO/1984/000951A1 |
Process for the elimination of hydrogen sulphide contained in a gas to be scrubbed by reacting hydrogen sulphide with sulphur dioxide in a solvent common to both compounds. According to the invention, said reaction is carried out at a te...
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WO/1983/004259A1 |
A process for the removal and detoxification of polychlorinated biphenyls (PCBs) present in dielectric or other fluids, such as transformer oil, employing polyethylene glycol as the primary extractant, cyclohexane as a secondary extracta...
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WO/1981/002422A1 |
A liquid clathrate of a multidentate macromolecular compound complex salt of the formula: (M(mmc)x)y(QnR3nX)z.pZ wherein M is a mono-, di, or trivalent cation, Q is Al or Ga, R is a lower alkyl group of 1 to 8 carbon atoms, X is a monova...
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JP7471415B2 |
The present disclosure relates to a method for upgrading liquefied waste plastics, the method including a step (A) of providing liquefied waste plastics (LWP) material, optionally a step (B) of pre-treating at least part of the liquefied...
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JP2024516229A |
A process for producing mesophase pitch, the process comprising: an isotropic pitch solvent and conditions sufficient to produce a solvent fraction containing the solvent and an insoluble fraction containing mesophase pitch. and recoveri...
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JP2024512909A |
The present invention provides compositions and methods for extracting contaminants from pyrolysis oil obtained from plastics. Extraction solvents for use in compositions and methods for purifying synthetic raw materials derived from pla...
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JP2024504568A |
Embodiments of the present disclosure are directed to a process for producing an upgraded product from a residue, including upgrading an atmospheric residue or a vacuum residue, the process comprising converting the residue to solvent de...
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JP2023166984A |
To provide methods and systems for purifying a sulfur-containing caustic fluid.A method for purifying a sulfur-containing caustic fluid comprises: (a) a step of mixing the sulfur-containing caustic fluid with a hydrocarbon solvent; (b) a...
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JP2023546118A |
The present invention is a process for recovering aliphatic hydrocarbons from a liquid stream comprising an aliphatic hydrocarbon, a heteroatom-containing organic compound, and optionally an aromatic hydrocarbon, the process comprising: ...
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JP2023546119A |
The present invention relates to a process for recovering aliphatic hydrocarbons from a liquid stream comprising aliphatic hydrocarbons, heteroatom-containing organic compounds, and optionally aromatic hydrocarbons, the process comprisin...
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JP2023546122A |
The present invention relates to a process for recovering aliphatic hydrocarbons from a liquid stream comprising aliphatic hydrocarbons, heteroatom-containing organic compounds, and optionally aromatic hydrocarbons, the process comprisin...
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