With Added Organic Material Patents (Class 208/180)
  • Patent number: 10696918
    Abstract: A method for continuous purification of motor lubricant oil includes circulating lubricant oil between a motor lubricant oil tank and a motor; transporting contaminated lubricant oil from the motor lubricant oil tank in a cleaning loop. The transport in the cleaning loop includes adding at least one liquid separation aid to contaminated lubricant oil; supplying contaminated lubricant oil to a three-phase centrifugal separator; continuously separating contaminants from the lubricant oil in the separator and continuously discharging a first liquid phase including purified lubricant oil from a liquid light phase outlet of the separator, continuously discharging a second liquid phase including solid contaminants from a liquid heavy phase outlet of the separator and continuously discharging a sludge phase from a sludge outlet by the aid of a conveyor screw of the three-phase separator. The method further includes transporting the first liquid phase including purified oil back to the lubricant oil tank.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: June 30, 2020
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Claes Wase, Mats Englund
  • Patent number: 10179881
    Abstract: A method and composition for isolating a paraffinic hydrocarbon layer from a sludge comprising a mixture of paraffinic hydrocarbons, water, and solids are provided. The method comprises providing a paraffinic hydrocarbon isolation composition comprising isopropylamine dodecylbenzene sulfonate, a surfactant, and a solvent; contacting the sludge with the paraffinic hydrocarbon isolation composition; and allowing the paraffinic hydrocarbon isolation composition to separate the sludge into a three phase separation comprising a paraffinic hydrocarbon layer, a water layer, and a layer of settled solids.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: January 15, 2019
    Assignee: TriStar PetroServ, Inc.
    Inventor: Stephen D. Matza
  • Patent number: 8999147
    Abstract: A process allowing the removal of contaminants from an unstable oil such as those produced by thermal or catalytic cracking, wherein, in at least one step of the process, mixing of the unstable oil with a pure or impure solvent having a dipole moment greater than 2 is performed. The stabilized diesels thereby obtained exhibit interesting properties among which significant stability features and are useful in numerous applications, some of these stabilized wide range diesels are new as well as their uses.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: April 7, 2015
    Assignee: Envirollea Inc.
    Inventor: Lucie B. Wheeler
  • Publication number: 20150048005
    Abstract: A continuous, hot vapor stripping, process and apparatus to recover base oil from used lubricating oils (IMO) containing lubricating oil boiling range material, with further refining using solvent extraction to produce a high quality base oil.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Applicant: Solvex Process Technologies LLC
    Inventors: Christopher Joseph Lobue, Gary Lynn Hensley
  • Publication number: 20140151268
    Abstract: The invention encompasses methods for aggregating oil-wet solids in an aqueous suspension comprising providing an aqueous suspension containing oil-wet solids, and treating the aqueous suspension with an effective amount of a formulation comprising a tunable surfactant, thereby aggregating the oil-wet solids as removable aggregates. The invention also encompasses methods for extracting bitumen from oil sands ore and systems for separating bitumen from inorganic oil sands ore.
    Type: Application
    Filed: June 18, 2013
    Publication date: June 5, 2014
    Inventors: David S. Soane, Robert P. Mahoney, Eric A. Verploegen, Rosa Casado Portilla
  • Patent number: 8518243
    Abstract: The fuel properties of petroleum hydrocarbon waste having an API gravity varying from about 5 to 30 are improved by heating the hydrocarbon to a temperature of about 35° C. to 90° C. and mixing the heated hydrocarbon stream with a suitable solvent to reduce the viscosity of the hydrocarbon, which is then separated by a centrifuge to obtain an aqueous phase stream, an oil phase stream, and a separated solids stream. The oil phase stream has a viscosity range of about 250 centipoise (cP) to about 1000 cP. The oil phase stream is utilized in a refinery, while a slurry fuel is prepared with the separated solids stream and aqueous phase stream as a feedstock for road asphalt, a fuel for a combustor, or a fuel for a gasification process. The oil phase stream is used for fuels and feedstock for making carbon fiber.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: August 27, 2013
    Assignee: Saudi Arabian Oil Company
    Inventor: M. Rashid Khan
  • Patent number: 8398847
    Abstract: One or more computer implemented methods for continuously processing used oils are provided. The method can include a feedstock tank containing feedstock. The feedstock tank can have a sparger and a level sensor. The feedstock tank can be in fluid communication with a first pump, a first filter, a heater, a second filter, first flow meter, a primary nozzle, a secondary nozzle, a motionless inline static mixer, and a first reactor.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: March 19, 2013
    Assignee: Vertex Energy, LP
    Inventors: Gregory Odell Wallace, John G. Schulz, Benjamin P. Cowart
  • Patent number: 8088276
    Abstract: A lubricating oil re-refining system and process provide a highly efficient and environmentally sound alternative for reclaiming and reusing spent oils. The re-refining process advantageously removes the additives, water, wear metals and other contaminants from the used lubricating oil, while at the same time, returns the base oil fraction that once again can be blended with additives and can be restored to its original high quality specifications for reuse without causing secondary pollution.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: January 3, 2012
    Assignee: CleanOil Limited
    Inventor: Antony Louis Marden
  • Publication number: 20110100878
    Abstract: The present invention relates to a process for the treatment of oil residues coming from the oil industry which comprises the recovery of the oil fraction of residues by extraction with solvents having a low environmental impact (ethyl acetate/toluene) and subsequent finishing for the downgrading of the residual material.
    Type: Application
    Filed: March 26, 2009
    Publication date: May 5, 2011
    Inventors: Felicia Massetti, Michelangelo D'abbieri, Alessandro Nardella
  • Publication number: 20110024329
    Abstract: One or more computer implemented methods for continuously processing used oils are provided. The method can include a feedstock tank containing feedstock. The feedstock tank can have a sparger and a level sensor. The feedstock tank can be in fluid communication with a first pump, a first filter, a heater, a second filter, first flow meter, a primary nozzle, a secondary nozzle, a motionless inline static mixer, and a first reactor.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Applicant: VERTEX ENERGY, LP
    Inventors: Gregory Odell Wallace, John G. Schulz, Benjamin P. Cowart
  • Patent number: 7662274
    Abstract: In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorganic or organic bases to the substrate of the oil distillate. An inorganic or organic base, a phase transfer catalyst selected from the group including quaternary ammonium salts, polyol ethers and crown ethers, and used oil distillate are mixed and heated. Thereafter, contaminants are removed from the used oil distillate through distillation.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: February 16, 2010
    Assignee: Miami University
    Inventors: Jeffrey H. Sherman, Richard T. Taylor
  • Publication number: 20100032342
    Abstract: A lubricating oil re-refining system and process provide a highly efficient and environmentally sound alternative for reclaiming and reusing spent oils. The re-refining process advantageously removes the additives, water, wear metals and other contaminants from the used lubricating oil, while at the same time, returns the base oil fraction that once again can be blended with additives and can be restored to its original high quality specifications for reuse without causing secondary pollution.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 11, 2010
    Applicant: CleanOil Limited
    Inventor: Antony Louis Marden
  • Patent number: 7612117
    Abstract: The invention pertains to the use of a class of acetylenic surfactants to resolve or break water and oil emulsions. The surfactants are of particular advantage in resolving crude oil emulsions of the type encountered in desalter and similar apparatus designed to extract brines from the crude as they partition to the aqueous phase in the desalter.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: November 3, 2009
    Assignee: General Electric Company
    Inventors: Cato R. McDaniel, Alan E. Goliaszewski, David Birenbaum Engel
  • Patent number: 7582200
    Abstract: A method of operating a hydraulic pump, comprising: a. filling a hydraulic system oil reservoir with a hydraulic oil comprising: i. a lubricant base oil having defined properties: and ii. an antiwear hydraulic oil additive package; wherein the hydraulic oil has an air release at 50° C. less than 0.8 minutes; and b. operating the hydraulic pump without pump cavitation. A hydraulic system, comprising a hydraulic system oil reservoir holding a hydraulic oil comprising: i. a lubricant base oil, optionally having defined properties; and b. an antiwear hydraulic oil additive package; wherein the hydraulic oil has an air release at 50° C. less than 0.8 minutes. In one embodiment the hydraulic oil additionally has low foam tendency and good demulsibility.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: September 1, 2009
    Assignee: Chevron U.S.A. Inc.
    Inventors: John M. Rosenbaum, Susan M. Abernathy, Nancy J. Bertrand
  • Publication number: 20090184030
    Abstract: A process for removing impurities from used oil. Impurities such as water, solid particles, and the like are removed from used oil by processing the oil with a mixture of polar and non-polar solvents. The process operates at room temperatures and pressures, simplifying the equipment and energy requirement for the process.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 23, 2009
    Inventors: Teh Fu Yen, William Tsung-Chieh Fan
  • Patent number: 7488412
    Abstract: There is disclosed a honeycomb structural body (1) comprising: a plurality of through channels (3) formed by a plurality of partition walls (2) in an axial direction. The honeycomb structural body (1) is constituted of a plurality of honeycomb sections (10, 11) formed of materials having different characteristics, and the plurality of honeycomb sections (10, 11) are directly bonded to and integrated with one another. According to the structure of this honeycomb structural body, different high performances can be fulfilled in accordance with requests for each honeycomb section. Additionally, there is not any local stress concentration by shape mismatch of each honeycomb section or presence of a bond material, and reliability at the time of use, and the like can be enhanced.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: February 10, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Fumio Abe, Toshio Yamada
  • Patent number: 7226533
    Abstract: A process to re-refine used petroleum oils by extraction with aliphatic solvents, wherein after eliminating the extract solvent, the process consists of the following treatments, (a) flash, continuous vaporization, at atmospheric pressure or near atmospheric pressure, to separate the light fractions, in the presence of small amounts of a basic compound or a reducing agent or a combination of both and (b) continuous distillation, in a fractionating column, of the bottom liquid obtained in stage (a), under vacuum and moderate temperatures, in the presence of a basic compound or a reducing compound or a combination of both, with recirculation from the bottom of the column to its feed; separating, as lateral extractions, the vacuum gas-oil or spindle oil and the lubricant bases and, as bottom product, a fuel-oil or asphaltic component.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: June 5, 2007
    Assignee: Sener Grupo De Ingenieria, S.A.
    Inventor: Jerónimo Angulo Aramburu
  • Patent number: 7208079
    Abstract: A process for the treatment of waste oil comprises the steps of (a) supplying a stream of the waste oil to a dehydrator to dehydrate the waste oil and obtain a stream of dehydrated waste oil; (b) supplying the stream of dehydrated waste oil to a fractionated distillation column having a lower tray, an upper tray and a middle tray therebetween, wherein the lower tray is operated at a temperature of 370 to 390° C. under a sub-atmospheric pressure of 50 to 100 mmHg, the middle tray is operated at a temperature of 265 to 280° C. under a sub-atmospheric pressure of 35 to 45 mmHg and the upper tray is operated at a temperature of 100 to 110° C. under a sub-atmospheric pressure of 30 to 40 mmHg; (c) withdrawing from the distillation column a bottom product comprising a bituminous material; (d) withdrawing a first side stream from the distillation column between the first and second trays, the first side stream comprising a heavy oil having a viscosity of 130 to 180 cSt at 40° C.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: April 24, 2007
    Inventor: Nouredine Fakhri
  • Patent number: 6712954
    Abstract: 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 layers of different viscosities and subsequent extraction with N-methyl-2-pyrrolidone and/or N-formylmorpholine. The invention also relates to base oils that can be obtained by said method and to the use thereof. The inventive method is characterized in that approximately any waste oil can be used, including waste oils with polychlorinated biphenylene (PCB) or PCB substitutes with contents of up to 250 mg/kg. Furthermore, waste oils containing up to 5% vegetable oil can be present in the waste oil that is to be reprocessed without impairing the quality of the base oil. The undesirable constituents, especially polycyclic aromatic hydrocarbons and polychlorinated biphenylenes (PCB) or the substitutes thereof are removed in an almost quantitative manner.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: March 30, 2004
    Assignee: Mineralöl-Raffinerie Dollbergen GmbH
    Inventors: Joachim Pöhler, Michael Mödler, Detlev Bruhnke, Holger Hindenberg
  • Patent number: 6670309
    Abstract: In preparing a purified fluorine-based solvent from a fluorine-based solution comprising a lubricant based on a fluororesin having an organic terminal group and a fluorocarbon-based solvent, impurities including ionic pollutants contained in the fluorine-based solution or the lubricant are selectively removed by an adsorption process. The preparation apparatus of a purified fluorine-based solvent is also disclosed.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: December 30, 2003
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Chiba, Keiji Watanabe, Eishin Yamakawa, Takeshi Tokairin
  • Patent number: 6485632
    Abstract: An apparatus and method for reclaiming waste oil for use as fuel for a diesel engine. A mixing tank is provided, along with a waste oil transfer pump for supplying waste oil to the mixing tank, a fuel proportioning pump for supplying a proportional amount of light fuel oil to the mixing tank, and a heating unit for heating the oil-fuel mixture. An additive proportioning pump may also be provided for supplying chemical fuel additives such as emulsifiers and combustion improvers to the mixing tank. A fuel delivery pump delivers the heated oil-fuel mixture from the mixing tank to a diesel engine for use as fuel. Pre-filters are provided to remove a large portion of the particulate material from the waste oil before it is delivered to the mixing tank, and final filters remove additional contaminants from the oil-fuel mixture before it reaches the engine.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: November 26, 2002
    Inventor: Michael S. Ward
  • Patent number: 6395166
    Abstract: A method of reclaiming used motor oil for further use is disclosed comprising (a) admixing used impurity laden motor oil with an effective amount of acetone as a flocculating agent and an effective amount of a second ketone as a wetting agent thereby forming an oil impurity flocculent mixture; (b) subjecting said mixture to a force such that a heavy phase and a light phase are formed, wherein said light phase is comprised of lean motor oil, acetone, and a second ketone, and wherein said heavy phase is comprised of flocculated impurities, any remaining acetone, and any remaining second ketone; and (c) separating said light phase containing said lean motor oil from said heavy phase containing said flocculated impurities. Preferably the second ketone is diisopropyl ketone, though other second ketones are also functional.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: May 28, 2002
    Inventor: Frederick J. Haydock
  • Patent number: 6320090
    Abstract: Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants therefrom, and is then reused. The petroleum distillate having the contaminants separated therefrom is also distilled to remove any remaining solvent therefrom, with the recovered solvent being reused.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: November 20, 2001
    Assignee: Miami University
    Inventors: Jeffrey H. Sherman, James W. Hershberger, Richard T. Taylor
  • Patent number: 6316685
    Abstract: Disclosed is a method for separating finely divided solids from a hydrocarbon slurry by using an additive that comprises a polymer and, optionally, an alkylbenzene sulfonic acid; and a composition of the additive thereof. The polymer is a polymer having (a) a polymeric backbone comprising polyol units and at least one unsaturated polycarboxylic unit, (b) acrylate units coordinated via unsaturated polycarboxylic units, and (c) oxyalkylated alkyl phenol units.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: November 13, 2001
    Assignee: Baker Hughes Incorporated
    Inventors: Robert S. Lauer, Lawrence N. Kremer, Joseph L. Stark, Andrew McCallum
  • Patent number: 6274030
    Abstract: 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. The solvent is typically an alkane such as, propane to pentanes. Then, solids are removed from the mixture by any known process. Finally, additional solvent may be added, and the mixture heated until asphaltenes precipitate into a separate phase. The asphaltenes are removed from the mixture. The mixture is then further heated to recover the solvent from the deasphalted hydrocarbon liquid. The asphaltenes are advantageously gasified.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: August 14, 2001
    Assignee: Texaco Inc.
    Inventors: Paul S. Wallace, Kay Anderson Johnson
  • Patent number: 6191077
    Abstract: A method of cleaning mineral-oil-based liquid cooling lubricants in which the cooling lubricants, which are continuously circulated in metal-working plants, are cleaned by a deposition filtration system. A continuous or discontinuous inoculation or introduction of filtering aid material is carried out in the filtration circuit during the filtration of the liquid cooling lubricant.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: February 20, 2001
    Assignees: Bayerische Motoren Werke Aktiengesellschaft, Filterwerk Mann & Hummel GmbH
    Inventors: Reinhard Baumgartner, Karl-Guenther Bremer, Rudi Bungenberg, Walter Janning, Joachim Panhans, Eduard Rauscher
  • Patent number: 6174431
    Abstract: A method for pretreating and re-refining used oil that requires only moderate heat and only one re-refining step. The pretreatment involves mixing the used oil with a basic solution and optionally a phase transfer catalyst. The phase transfer catalyst aids the chemical reaction which allows removal of impurities in used oil. The basic solution preferably includes more than one base. The used oil, basic solution and phase transfer catalyst are mixed under low heat. The pretreated oil is then mixed with liquid propane in a non-turbulent manner, such as by use of a globe valve or orbit valve. The mixture of used oil and liquid propane are then placed into an extraction vessel and impurities are allowed to settle out of the oil and propane mixture. Heavy fraction may be removed from the extraction vessel. Preferably, a second vessel called a settling vessel will be used to cause further settling of impurities out of the used oil. Light fraction is produced which may be re-refined to produce base oil.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: January 16, 2001
    Assignee: Interline Hydrocarbon, Inc.
    Inventors: Michael R. Williams, Jan Krzykawski
  • Patent number: 6117327
    Abstract: A method suitable for treating used oil to remove ash and metal contaminants therefrom with minimum oxidation of the oil, the metal including at least one of the components of iron, lead, copper, zinc, sodium, magnesium, and calcium, to provide a highly purified oil product having less than 10 ppm of at least one of the contaminants and less than 0.15 wt. % of ash content. The method comprises providing a body of oil to be purified and chemically treating the oil to condition ash and metals contained therein to facilitate removal of ash and metal during membrane purification of the oil.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: September 12, 2000
    Assignee: Media and Process Technology Inc.
    Inventors: Richard J. Ciora, Paul K. T. Liu
  • Patent number: 6072065
    Abstract: An alkaline treatment method for refining used oils, wherein (a) the used oils are distilled; (b) the resulting distillate is treated with an alkaline agent in the presence of a solvent selected from water, a monoalcohol, a polyalcohol and a mixture of said a alcohols, said alkaline agent being present in a percentage by weight, based on the weight of the distillate, equal to the product F.times.(IA+IS), where F is a multiplier between 2 and 50 and IA and IS are the acid value and the saponification value respectively of said distillate, at a temperatue of around 80-330.degree. C. for 2-200 minutes; (c) the reaction medium is washed with water then decanted to recover the oily phase; and (d) said oily phase is distilled. The method is useful for producing refined oils having excellent properties in that they are odorless and nearly colorless and in that they have a very low chlorine, phosphorus and sillicon content.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: June 6, 2000
    Inventor: Bernard Chavet
  • Patent number: 6004434
    Abstract: A method of treating cleaning solvent used to clean mechanical parts. The method includes adding to the cleaning solvent a treating composition selected from the group of C.sub.5 -C.sub.14 alcohols, C.sub.2 -C.sub.8 dials, C.sub.10 -C.sub.14 polyols, and C.sub.4 -C.sub.14 glycol ethers, and mixtures thereof. A further embodiment includes the foregoing plus adding a clarifying agent from the group of aromatic, aliphatic and alkaryl sulfonic acids and sulfonic acid salts, esterified polyols, and alkyl phenol formaldehyde resins capped with alkoxy groups. The solvent is vaporized and condensed to effect recycling thereof without adding substituted quantities of treating composition to the solvent.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: December 21, 1999
    Assignee: Safety-Kleen Corp.
    Inventor: Esfandiar Kiany
  • Patent number: 5855768
    Abstract: A process is described for removing contaminants from thermally cracked waste oil, e.g. used motor oil. In the process the cracked waste oil is contacted with a solvent comprising methanol. The thermally cracked waste oil is then separated from the solvent whereby a substantial portion of the contaminants are removed into the solvent. Thereafter, the solvent is separated from the contaminants and recycled.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: January 5, 1999
    Assignee: Natural Resources Canada
    Inventors: Maria Stanciulescu, Michio Ikura
  • Patent number: 5814206
    Abstract: An improved process for neutralization of acid tars employs a bulk neutralizing agent having a specific gravity greater than that of the acid tar to be neutralized. The bulk neutralizing agent, generally in excess of an amount sufficient to accomplish neutralizing, is spread on top of the acid tar. The neutralizing agent will then begin to sink into the tar. The sinking occurs at a slow rate which is a function of tar viscosity, tar specific gravity, neutralizing agent specific gravity, and temperature. As the neutralizing material sinks into the acidic tar it reacts with the acid neutralizing the tar in situ and depleting the neutralizing agent. Not only does the reaction increase the pH of the tar, it also produces a reaction product with improved physical properties which promotes ease in handling.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: September 29, 1998
    Assignee: Sound-epic Environmental Services
    Inventors: Jeffery P. Bauman, Richard W. McManus
  • Patent number: 5795463
    Abstract: Metals are removed from used, contaminated oils, such as crankcase oils from cars, by a low temperature, batch tank process. The oil is hydrated by adding enough water to prevent premature crystallization of a reagent salt from solution in a succeeding stage of the process. The batch is heated to a low, required reaction temperature. A quantity of a primary demetalizing agent, comprising an ammonium based salt, or its requisite acid and base to from the salt in-situ, is added in the range of stoichiometric to multiples of stoichiometric, in accordance with the analysed quantum of metals present in the oil batch. The mixture is stirred to react the metals present with the salt, and is then cooled, to precipitate the thus formed sludge, which is then physically separated.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: August 18, 1998
    Inventor: Richard A. Prokopowicz
  • Patent number: 5770048
    Abstract: An alcohol, specifically ethanol, methanol and isopropanol, is used to remove acid from a refrigeration system, a heat pump or an air conditioner. The alcohol vaporizes acid, primarily inorganic acid, in the system and, in the filter/dryer, reacts with surfaces or is adsorbed. The alcohol, the quantity of which is determined from the capacity of the filter/dryer, is introduced into the compressor oil sump for thorough mixing with the oil during compressor lubrication.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: June 23, 1998
    Assignee: Mainstream Engineering Corporation
    Inventors: Robert Peter Scaringe, Nidal Abdul Samad, Lawrence Robert Grzyll
  • Patent number: 5556548
    Abstract: A novel process and related apparatus for removing common contaminants from used motor oil. Propane, butane or similar solvent is mixed with the contaminated oil to form a solution. This solution is agitated and then given time to settle thus allowing gravitational separation of asphaltic pollutants. The solution is then percolated through a columned filter to remove heavy metallic contaminants and the solvent recovered by heating the solution.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: September 17, 1996
    Assignee: Interline Hydrocarbon Inc.
    Inventor: Craig R. Mellen
  • Patent number: 5478463
    Abstract: A method, composition and filter for reducing the presence of sludge or varnish precursors in a lubricating oil circulating within an internal combustion engine. The lubricating oil containing sludge or varnish precursors is contacted with discrete particles of an oil insoluble, oil wettable compound having an antioxidant functional group and/or a dispersant functional group, which are capable of complexing with sludge or varnish precursors. Preferably the compounds comprises a crosslinked amine having ethylene amine functionality. The starting polyethylene amines have a number average molecular weight in the range of about 100 to about 60,000, preferably 200 to 250 and are crosslinked with a silicon oxide, silane, silicate, epoxide, quinone, or phenol-formaldehyde crosslinking agent. The particles are encaged within a one or two stage oil filter together with filtering media such as chemically active filter media, physically active filter media and inactive filter media.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: December 26, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Darrell W. Brownawell, Warren A. Thaler, Cruise K. Jones, Jacob Emert, Abhimanyu O. Patil
  • Patent number: 5476988
    Abstract: A method for accelerating the settling of finely divided solids in hydrocarbon fluids comprising adding to the hydrocarbon a sufficient settling amount of quaternary fatty ammonium compound. Preferably, the hydrocarbon is a fluid catalytic cracker slurry containing spent catalyst fines.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: December 19, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul R. Hart, Wiley L. Parker, Alan E. Goliaszewski, April Jean, Scott E. Lehrer
  • Patent number: 5458765
    Abstract: This invention is a process comprising several steps for removing solid contaminants and for assisting in the dewatering of liquid hydrocarbons. For the purposes of this invention, solid contaminants include dissolved salts, either in the oil or in the emulsified water phase, or dispersed undissolved solids. First, a sample of liquid hydrocarbon containing solid contaminants is heated to a temperature in the range of 180.degree. F.-200.degree. F. Following heating, an aqueous solution of carbodihydrazide is added to the liquid hydrocarbon and the liquid hydrocarbon is re-heated to a temperature of 180.degree. F. to 200.degree. F. After re-heating, a demulsifier is added to the liquid hydrocarbon and water and the precipitated solids are separated from the liquid hydrocarbon.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: October 17, 1995
    Assignee: Nalco Chemical Company
    Inventor: Porcia E. West
  • Patent number: 5447638
    Abstract: A method for flocculating finely divided particles suspended in nonpolar liquids, thereby facilitating the removal of these particles by sedimentation or filtration, by treating the contaminated nonpolar liquids with from about 0.01% to about 5% by weight of a flocculant comprising a water soluble organic compound having a cationic quaternary nitrogen or ammonium group. The flocculants useful in the method of the invention are desirably miscible or dispersible in the nonpolar liquid, and a carrier solvent or surfactant may be used to improve dispersibility of the flocculant.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: September 5, 1995
    Assignee: NCH Corporation
    Inventors: Robert M. Holdar, Michael L. Paulson
  • Patent number: 5332507
    Abstract: The invention provides a method of recycling waste oil fluids including dispersed solids and emulsified water. According to the method, the waste oil is treated with an effective amount of a dispersion of a water-soluble cationic polymer.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: July 26, 1994
    Assignee: Nalco Chemical Company
    Inventors: Michael L. Braden, Wayne M. Carlson, Manian Ramesh, Ananthasubramanian Sivakumar
  • Patent number: 5332510
    Abstract: Process for cleaning rolling oils which, when contaminated, contain rolling fines originating from metals being processed into semi-finished products in strip form, in particular light weight metals, e.g. aluminum fines. An addition of 2 to 8 g of dimeric oleic acid is made to each 1000 g of contaminated oil and the mixture passed through a coagulator whereby the rolling fines coagulate and can be readily removed from the contaminated oil. The purified oil can be recirculated as rolling oil.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: July 26, 1994
    Assignee: Alusuisse-Lonza Services Ltd.
    Inventors: Rudolf Baur, Hanspeter Krahenbuhl, Urs Giger, Emil Merki
  • Patent number: 5286380
    Abstract: A novel process and related apparatus for removing common contaminants from used motor oil. Propane, butane or a similar solvent is mixed with the contaminated oil to form a solution. This solution is agitated and then given time to settle thus allowing gravitational separation of asphaltic pollutants. The solution is then percolated through a columned filter to remove heavy metallic contaminants and the solvent recovered by heating the solution.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: February 15, 1994
    Assignee: Petroleum Technology Corporation
    Inventor: Craig R. Mellen
  • Patent number: 5244566
    Abstract: A process is shown for deabsorbing oil from an oil absorbent material. A citric oil-in-water emulsion is formulated having an aqueous external phase and having a dispersed internal phase which is comprised of a distilled citric oil. The hydrocarbon contaminated material is immersed within the citric oil-in-water emulsion, whereby absorbed hydrocarbons are extracted from the oil absorbent material.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: September 14, 1993
    Assignee: Insight Environmental Services, Inc.
    Inventor: Gordon S. Bond
  • Patent number: 5141628
    Abstract: Used oils, especially used lube oils, after rough filtering are mixed with an aqueous solution of water glass and an aqueous solution of polyalkylene glycol while stirring at elevated temperature, the obtained mixture is allowed to settle, the settlings are separated, and water and light ends are removed from the oil phase by distillation. The thus obtained dry oil phase may be subjected to adsorptive filtering either direct or through a per se known treatment with dispersed sodium and may finally be fractionated by distillation.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: August 25, 1992
    Assignee: RWE-Entsorgung Aktiengesellschaft
    Inventors: Erich-Klaus Martin, Adekunle Onabajo
  • Patent number: 5064523
    Abstract: Process for the hydrogenative conversion of heavy oils and residual oils, used oils and waste oils, mixed with sewage sludge in a typical liquid phase hydrogenator with gases containing hydrogen, with the addition of a finely ground substance that preferably has a large internal surface area, as additive. The additive is added in two different particle size ranges so that a portion of the additive is present as a fine particle size fraction iwth a particle size of 90 .mu.m or less and another portion as a coarse particle size fraction with a particle size of 100 .mu.m to 2000 .mu.m, preferably 100 to 1000 .mu.m with the procedure being carried out with a weight ratio of raw oils to sewage sludge used of 10:1 to 1:1.5. Conversion of vacuum residue of a Venezuelan heavy oil with the addition of 2 wt. % of lignite coke as additive and with the admixture of 10 wt.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: November 12, 1991
    Assignee: Veba Oel Technologie GmbH
    Inventors: Klaus Kretschmar, Ludwig Merz, Klaus Niemann
  • Patent number: 5057207
    Abstract: The present invention provides a method for reprocessing, particularly the dehalogenation, of oil products which involves a) treating the oil product at temperatures up to about 150.degree. C. with an effective amount of an aqueous solution of at least one compound selected from the group consisting of a strong acid, a salt of a weak base and a strong acid and precursors thereof; b) treating the oil product of step (a) at increased temperatures with at least one halogen binding agent; and c) separating water and/or the solids from the treated oil product of step (b).
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: October 15, 1991
    Assignee: Geut AG
    Inventor: Fritz Basler
  • Patent number: 5042617
    Abstract: Sludge can be effectively removed from a lubricating oil by contacting the oil with a dispersant functional group immobilized on a substrate. This results in improved engine cleanliness and control of viscosity increases.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: August 27, 1991
    Assignee: Exxon Research & Engineering Company
    Inventors: Darrell W. Brownawell, Warren Thaler
  • Patent number: 4948493
    Abstract: A tank is suspended in an enclosure and defines therebetween a chamber completely surrounding the tank. A fluid or air within the chamber is heated to create a thermal blanket and an oven-like condition completely around the tank to maintain the tank and used oil and coagulant within the tank at a substantially constant temperature for an extended period of time for settling of contaminants towards the bottom of the tank. Clean oil remaining at the top of the tank is removed for reuse. The invention is particularly useful for heavy users of lubricating oil such as railroads or shipping companies.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: August 14, 1990
    Inventor: Lowell A. Wilson
  • Patent number: 4941966
    Abstract: A process for the hydrogenative conversion of mixtures of oil and organic waste products, comprising the steps of:(i) preparing a hydrogenation mixture comprising(a) a heavy oil, residual oil, or mixtures thereof, or(b) a used oil, a waste oil or mixtures thereof, or mixtures of (a) and (b), and(c) one or more organic waste products containing natural or synthetic organic compounds comprising uncrosslinked or crosslinked carbon chains;(ii) contacting said hydrogenation mixture with 0.1-10 wt. % of an additive selected from the group consisting of high surface area suspended solids containing carbon, red mud, iron oxides, electrostatic filter dusts and cyclone dusts, wherein said additive comprises particles in two different particle size ranges, a fine particle fraction with a particle size 90 microns or less, and a coarse particle fraction with a particle size between 100-1000 microns; and(iii) hydrogenating said contacted mixture at a hydrogen partial pressure of 50-350 bar, a temperature of 250.degree.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: July 17, 1990
    Assignee: Veba Oel Entwicklungs-Gesellschaft mbH
    Inventors: Ludwig Merz, Klaus Niemann
  • Patent number: 4888108
    Abstract: Dispersed solids, particularly fine peptized hydrophobic solids, present in some petroleum oils, bitumen solutions or concentrates, heavy oils and the like, may be removed by distributing an additive selected from resorcinol, catechol, formic acid, maleic acid or anhydride, chloral hydrate and asphaltene - precipitating solvents (preferably certain mixtures thereof) throughout the dispersion to cause small agglomerates containing the solids to form, and separating the agglomerates from the residual liquid. This residual liquid is rendered more suitable for various refining processes. Agglomerates containing asphaltenes and mineral solids may be used e.g. in hydrogen generation, for compounding roofing materials and in paving materials.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: December 19, 1989
    Assignee: Canadian Patents and Development Limited
    Inventor: J. Redmond Farnand