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Patent Searching and Data


Matches 151 - 200 out of 955

Document Document Title
WO/2002/057394A1
A method of refining a petroleum product to remove aromatics and to separate paraffinic oils and waxes is provided. The method involves the utilization of phase equilibria wherein crystallized or solidified waxes, normally present in the...  
WO/2002/048283A1
A process for producing a lubricating oil basestock having at least 90 wt.% saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hyd...  
WO/2002/048291A1
A process for producing a high VI/low volatility lubricating oil basestock and a lubricating oil basestock prepared by said process. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stag...  
WO/2002/046333A2
Lube base stocks and lube stock compositions, as well as a process for preparing lube base stocks and lube stock compositions, are disclosed. The lube oils preferably have a viscosity index above about 115. The process involves obtaining...  
WO/2002/038703A1
A process for manufacturing a lube base stock, and the lube base stock produced by the process, is disclosed. The method involves converting a light hydrocarbon feedstock into syngas, converting the syngas to hydrocarbon products via Fis...  
WO/2002/038702A1
An oil feedstock (6) is upgraded wherein the feedstock is hydrocracked, flashed and/or distilled. The bottoms are then vacuum distilled to adjust viscosity and volatility. The refined feed (30) is then dewaxed under high pressure by a me...  
WO/2001/081503A2
The invention is a process for producing a mixture of Fischer-Tropsch product that is solid at ambient conditions (between 32 °F and 95 °F), such as wax, and hydrocarbon liquid, such as naphtha, that can be pumped at ambient temperatur...  
WO/2001/081504A2
The invention is a process for producing a mixture of wax and crude oil which can be pumped at ambient temperature. The wax is preferably a Fisher-Tropsch wax. The temperature of the crude oil is controlled to a level below the dissoluti...  
WO/2001/074971A2
A wax blending process is disclosed which retains the desirable properties of a Fischer-Tropsch wax, while adjusting the hardness of the wax to within a desired range. The invention utilizes a synergistic effect between hard virgin Fisch...  
WO/2001/074969A2
A novel process for forming hydrocarbon waxes from synthesis gas is disclosed. This invention teaches a process whereby a Fischer-Tropsch wax can be formulated such that the wax softness as defined by ASTM Standard Test Method for Needle...  
WO/2001/070654A1
A method and system for separation of hydrocarbon oils from waxy feedstock comprising applying ultrasonic energy to a mixture of wax and solvent while crystallizing wax crystals by cooling. During cooling enough heat is removed to compen...  
WO/2001/057158A1
During catalytic dewaxing of paraffinic hydrocarbons, the exothermic catalytic dewaxing reaction is moderated by separating and cooling a heavy dewaxate having an initial boiling point of at least 800 °F+, and recycling it back into the...  
WO/2001/057159A1
The present invention is a process for producing a high viscosity index and low pour point lubricating oil base stock which comprises catalytically converting a hydrotreated hydrocarbon lube oil feedstock containing waxy paraffins in the...  
WO/2001/044109A1
The present invention relates to new crystalline zeolite SSZ-50 prepared using a quaternary ammonium cation templating agent having structure (A) where X- is an anyon which is not detrimental to the formation of the SSZ-50. SSZ-50 is use...  
WO/2001/042395A1
An extraction zone (10) is shown having a feed inlet (14) for introducing a lube oil feedstock such as a distillate feed, an aromatic extraction solvent inlet (16), an extract outlet (18) and a raffinate outlet (20).  
WO/2001/018156A1
The invention concerns a novel hydrocarbon base oil for lubricants, having a viscosity index not less than 130, comprising mainly long isoparaffinic hydrocarbon chains, branched over several carbon atoms. The invention is characterised i...  
WO/2001/007538A1
Process for preparing a lubricating base oil by contacting a synthetic waxes, which wax is obtained by a Fischer-Tropsch process and has not been subjected to a hydroisomerisation treatment, with a catalyst composition comprising at leas...  
WO/2001/007158A1
Method for impregnating a Group VIII metal on a molecular sieve- binder extrudate wherein the binder comprises a low acidity refractory oxide binder material, which is essentially free of alumina, by: a) contacting the molecular sieve-bi...  
WO/2001/007537A1
A method for concentrating the amount of alkylated mono-aromatics in a lubricating oil feedstock useful as a feedstock for sulfonation. The method comprises extracting a feedstock rich in aromatics with a solvent selected from NMP, pheno...  
WO/2000/071639A1
The feed (8) to vacuum pipe still (10) is an atmospheric reduced crude. Various distillate cuts shown as (12) light, (14) (medium) and (16) heavy may be sent to solvent extract unit (30) via line (18). The bottoms from vacuum pipe still ...  
WO/2000/071645A1
The process is drawn to producing a lubricating oil basestock having at least 90 wt % saturates and a VI of at least 105 in unit (42) then the hydroconverted raffinate is conducted through line (46) to heat exchanger (48).  
WO/2000/071619A1
Chemical additive comprising selected surfactants, dispersants, and degreasers that liquefy, disperse, demulsify, degrease, inhibit corrosion and scale formation, lower pour-point/cloud-point of petroleum, coal, Fischer-Tropsch synthesiz...  
WO/2000/066263A1
There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeo...  
WO/2000/029511A1
Process for the catalytic dewaxing of a hydrocarbon feed comprising waxy molecules by contacting the hydrocarbon feed under catalytic dewaxing conditions with a catalyst composition comprising metallosilicate crystallites, a binder and a...  
WO/2000/029512A1
Process for the catalytic dewaxing of a hydrocarbon oil feed including waxy molecules and more than 500 ppmw of sulphur or sulphur containing compounds by contacting the oil feed under catalytic dewaxing conditions with a catalyst compos...  
WO/2000/024673A1
The invention relates to a microporous cristalline material with a characteristic X ray diffractogramme, comprised of oxigen tetrahedra and a metal (T?+4¿ and T?+3¿) with the possibility of introducing superficial acidity produced by t...  
WO/2000/024847A1
A hydroprocessing process for removing impurities from a feed (22) comprising a hydrocarbonaceous liquid comprises at least two cocurrent, upflow hydroprocessing reaction stages (14, 16) and a non-catalytic, vapor-liquid contacting stage...  
WO/2000/024846A1
A hydroprocessing process for removing impurities from a feed (30) comprising a hydrocarbonaceous liquid comprises at least one cocurrent, upflow hydroprocessing reaction stage (18), a vapor-liquid contacting stage (20) and a downflow hy...  
WO/2000/014179A1
A premium synthetic lubricating oil base stock having a high VI and low pour point is made by hydroisomerizing a Fischer-Tropsch synthesized waxy, paraffinic feed wax and then dewaxing the hydroisomerate to form a 650-750 °F+ dewaxate. ...  
WO/2000/011113A1
A process for distilling paraffinic hydrocarbons comprises feeding a Fischer-Tropsh derived paraffinic hydrocarbon feedstock comprising heavy paraffinic hydrocarbons and, optionally, light and/or medium paraffinic hydrocarbons, into a di...  
WO1998000479A8
A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step (40) to a two-step, single stage hydroconversion process wherein the first step inv...  
WO/1999/045084A1
A process for producing a lubricating oil basestock having at least 90 wt % saturates and a VI of at least 105 by solvent extracting a feedstock in unit (20) to produce a raffinate, solvent dewaxing the raffinate, selectively hydroconver...  
WO/1999/041332A1
The present invention is directed to an easily biodegradable low viscosity, low Noack volatility lube oil material having a viscosity index (VI) in the range of about 110-145, $m(g)98 % saturates useful as lube oil basestock, automatic t...  
WO/1999/041327A1
A process for producing a lubricating oil basestock having at least 90 wt.% saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone (20) to a two step hydroconversion through a first h...  
WO/1999/041338A1
A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step (40) to a two-step, single-stage hydroconversion process wherein the first step inv...  
WO/1999/041333A1
A method for hydroisomerizing a waxy feed to favor one of VI or yield is described. The method uses a unitized pellet powder catalyst comprising a metal hydrogeneration component, a first catalytic component selected from 8, 10 and 12 ri...  
WO/1999/037737A1
A process for treating a wax includes thermally cracking, in a cracking stage, a feed wax having a congealing point X °C, to produce, as a primary product, a lighter wax having a congealing point Y °C, where X > Y. The feed wax is typi...  
WO/1999/010098A1
Nickel-copper catalysts supported on an amorphous silica-alumina acidic carrier, preferably containing a binder, and having an iso-electric point of $m(G)6.5 are used to hydroisomerize paraffins, particularly Fischer-Tropsch paraffins, b...  
WO/1998/027180A1
A process for upgrading a wax-containing feedstock to produce a wax and a high VI/low volatility lubricating oil base stock. The process comprises subjecting the raffinate from a solvent extraction step (20) to a two step, single stage h...  
WO/1998/008923A1
Disclosed is an apparatus and a process for reclaiming fuel oil from waste oil. The apparatus comprises a thermal cracking unit for cracking the high boiling hydrocarbon material into lighter, lower boiling material so as to separate hyd...  
WO/1998/000479A1
A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step (40) to a two-step, single stage hydroconversion process wherein the first step inv...  
WO/1997/039085A1
A waxy oil feed is introduced through line (1) and is mixed with MEK/toluene solvent fed through line (2) and is fed to heat exchanger (3) to dissolve all crystals. The waxy feed in line (101) is mixed directly with solvent and fed throu...  
WO/1997/023584A1
Petroleum products are refined in an integrated hydroprocessing scheme involving a hydrocracking stage (1) and subsequent dewaxing stage (16). Materials boiling in the middle distillate or lube oil range may be dewaxed. The bottoms strea...  
WO/1997/021788A1
Discloses novel biodegradable high performance hydrocarbon base oils useful as lubricants in engine oil and industrial compositions, and process for their manufacture. A waxy, or paraffinic feed, particularly a Fischer-Tropsch wax, is re...  
WO/1997/012013A1
An improved process for solvent dewaxing a waxy petroleum oil lubricating stock. Waxy oil feed (101) is treated with cold solvent (102) to crystallize and precipitate wax particles, to form a multiphase oil/solvent/wax mixture (107) cont...  
WO/1997/003750A1
Nickel-copper catalysts supported on an acidic carrier, preferably containing a binder, are used to hydroisomerize paraffins, particularly Fischer-Tropsch paraffins, boiling at 350 �F+ into lighter, more valuable products. The hydroiso...  
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/1996/039474A1
A process for dewaxing, including the steps of mixing a waxy feedstock (1) near its pour point with an ambient or below ambient temperature solvent (10) essentially free of a selected cosolvent, to form a solvent/feedstock mixture (2), e...  
WO/1996/028522A1
The invention relates to a high penetration - minimum value 30 0.1 mm at 25 �C - and low viscosity - maximum value 10 m2/s - paraffin wax. The invention also relates to a process for producing said paraffin wax by redistilling a mixtur...  
WO/1996/026993A1
This invention discloses a process for producing a high Viscosity Index lubricant having a VI of at least 125 from a waxy hydrocarbon feed having a wax content of at least 40 wt.%. The process comprises catalytically dewaxing waxy paraff...  

Matches 151 - 200 out of 955