Distillation Or Degassing Patents (Class 208/184)
  • Patent number: 9956499
    Abstract: A method for separating a lubrication oil from a waste fluid includes separating water from the waste fluid including a lubrication oil by heating the waste fluid while sealed in a first vacuum chamber to a first maximum specified temperature and first specified pressure. Fuel oil is separated from a fluid received from the first vacuum chamber by heating the fluid while sealed in a second vacuum chamber to a second maximum specified temperature that his higher than the first maximum specified temperature and at a second specified pressure. Finally, the lubrication oil is separated from a fluid received from the second vacuum chamber by heating the fluid received from the second vacuum chamber while sealed in a third vacuum chamber to a third maximum specified temperature that his higher than the second maximum specified temperature and at a third specified pressure. The first, second and third pressures need not be different.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: May 1, 2018
    Assignee: AGC REFINING & FILTRATION, LLC
    Inventors: Jerome Nichols, Tyler Humphreys
  • Patent number: 9382629
    Abstract: An embodiment prevents equipment fouling (deposition of unwanted material) in an oil recovery system via implementing passivation of metallic components. By preventing or at least slowing or inhibiting corrosion of equipment or components via passivation, such as passivating heat exchangers, metallic piping, and the like, an embodiment in turn reduces fouling thereof. Other embodiments are described and claimed.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: July 5, 2016
    Assignee: CHEMTREAT, INC.
    Inventors: Robert Wright Bedinger, III, Benjamin Edward Niemaseck, Mark Jason Puchovich, John Richardson
  • Patent number: 8986536
    Abstract: The present invention provides a method and an apparatus for recovery of spent lubricating oil. The evaporation of hydrocarbon fractions from spent lubricating oil is carried out in three steps. The first step is at approximately 150-1030 mbar and between 70-240° C. in which is greater than 99% water, greater than 99% of ethylene glycol and greater than 50% of hydrocarbon molecules with normal boiling point up to 310° C. are evaporated from spent oil. The second step is operated at 6-30 mbar and 200-2900 C in which predominantly gasoil and light vacuum gasoil fractions are evaporated. The third step is operated at 250-320° C. and 0.5-15 mbar in which mainly heavy vacuum gasoil (boiling range of 425 to 570° C. on ASTM D-1160 test) is evaporated from spent oil.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: March 24, 2015
    Inventor: Rohit Joshi
  • Patent number: 8945350
    Abstract: A method of separating a high boiling component from a mixture containing organic and/or inorganic boiling components which method involves providing an induction heated screw conveyor having an auger and passing the mixture through the induction heated screw conveyor while inductively heating the auger so as to heat the mixture in the induction heated screw conveyor. The mixture is heated to a temperature that is sufficient to cause the boiling component(s) to separate from the mixture as a vapor and the boiling component is removed from the induction heated screw conveyor.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 3, 2015
    Assignee: Heritage Environmental Services LLC
    Inventors: James E. Bratina, David Bowering, Perry Eyster, Thomas Roberts
  • Patent number: 8945351
    Abstract: A method of removing organic components from a mixture containing organic and inorganic components which method involves providing an induction heated screw conveyor having an auger and passing the mixture through the induction heated screw conveyor while inductively heating the auger so as to heat the mixture in the induction heated screw conveyor primarily from the center of the induction heated screw conveyor. The mixture is heated to a temperature that is sufficient to cause the organic components in the mixture to separate from the mixture as a vapor. The oxygen concentration in the induction heated screw conveyor is controlled so as to gasify the organic components. The gasified organic components are removed and the remaining inorganic components are collected.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 3, 2015
    Assignee: Heritage Environmental Services LLC
    Inventors: James E. Bratina, David Bowering, Anthony Kriech, Perry Eyster, Thomas Roberts
  • Patent number: 8936718
    Abstract: A method for recovering base oil from waste lubricating oil by separating base oil range constituents from a waste lubricating oil mixture, thereafter separating higher quality base oil constituents and lower quality base oil constituents from the base oil recovered from the waste lubricating oil mixture and thereafter treating the lower quality base oil constituents to produce marketable base oil. The total base oil produced from a waste lubricating oil mixture by this process is greater than the quantity producible by previous processes using only base oil separation from the waste lubricating oil mixture or processes which use only treatment of the base oil recovered from the waste lubricating oil mixture to produce the product base oil.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: January 20, 2015
    Assignee: Verolube, Inc.
    Inventor: Martin R. MacDonald
  • Patent number: 8758597
    Abstract: A saturated elastomeric mixture is disclosed having a cured or vulcanized elastomer crumb rubber and atmospheric distillations bottoms residue is disclosed.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: June 24, 2014
    Inventor: John D. Osborn
  • Patent number: 8734618
    Abstract: Apparatus for treating a gaseous hydrocarbon fraction to obtain a gaseous fraction and a liquid fraction which apparatus includes a shell-and-tube heat exchanger and a distillation column, wherein the shell-and-tube heat exchanger includes an inlet and an outlet for cooling fluid which inlet and outlet are in fluid communication with the tube side of the heat exchanger, and an inlet for the gaseous hydrocarbon fraction at the upper end of the heat exchanger which inlet is in fluid communication with the shell side of the heat exchanger, and a conduit for guiding hydrocarbons from the heat exchanger to the distillation column which distillation column includes an outlet for gas at its upper end and an outlet for liquid at its lower end, and process in which such apparatus is used.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: May 27, 2014
    Assignee: Shell Oil Company
    Inventor: George Anderson
  • Patent number: 8640491
    Abstract: A vapor compression system (10), also known as a chiller, includes a refrigeration loop and a lubrication loop. The lubrication loop includes a lubrication reclamation system that further includes a still (42) and an ejector (44) to reduce a pressure in the still (42). The ejector (44) includes an input portion (46), an output portion 54 and a vent portion (50). The input portion (46), the output portion (54) and the vent portion (50) are in fluid communication with one another. The vent portion (50) of the ejector (44) is positioned in a vent line (48) associated with the still (42). The still (42) primarily contains a mixture of liquid refrigerant and lubricant. The input portion (46) of the ejector receives liquid or gas at a high pressure and expels the liquid or gas through the output portion (54) at an intermediate pressure. As the input fluid at a high pressure flows through the ejector (44), a low pressure is created at the vent portion (50).
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: February 4, 2014
    Assignee: Carrier Corporation
    Inventor: Stephen L. Shoulders
  • Patent number: 8642518
    Abstract: In a method for recovering lubricant or lubricant concentrate from a used mixture containing lubricant, the mixture containing lubricant and which is substantially dewatered is subjected to short path distillation at a temperature of at least 150° C. and a pressure of less than 1.5 mbar, in order to obtain a lubricant concentrate which can be recycled into cooling lubricants and which is free of very finely wear debris, metal soaps and polymers.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: February 4, 2014
    Assignee: Hydro Aluminum Rolled Products GmbH
    Inventors: Oliver Seiferth, Gerhard Kudermann
  • Patent number: 8518239
    Abstract: This invention is directed to hydrocracking catalysts and hydrocracking processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the present invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrocracking catalysts and processes.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 27, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Darren P. Fong
  • Patent number: 8366912
    Abstract: A method for recovering base oil from waste lubricating oil by separating base oil range constituents from a waste lubricating oil mixture, thereafter separating higher quality base oil constituents and lower quality base oil constituents from the base oil recovered from the waste lubricating oil mixture and thereafter treating the lower quality base oil constituents to produce marketable base oil. The total base oil produced from a waste lubricating oil mixture by this process is greater than the quantity producible by previous processes using only base oil separation from the waste lubricating oil mixture or processes which use only treatment of the base oil recovered from the waste lubricating oil mixture to produce the product base oil.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: February 5, 2013
    Assignee: ARI Technologies, LLC
    Inventor: Martin R. MacDonald
  • Patent number: 8343316
    Abstract: A vacuum dehydrator for processing an oil containing entrained contaminants such as water, air, and particulates comprises a tower enclosing upper and lower chambers. A random packing is contained in the upper chamber. The oil is preheated to a temperature above the boiling point of water and is introduced into the upper chamber for downward flow through the random packing into the lower chamber. Entrained air and water is retained as water vapor in the upper chamber, and particulates are retained in the random packing. Heated ambient air is introduced into the lower chamber for upward flow through the random packing into the upper chamber, and the upper chamber is cooled to condense the water vapor. Oil and condensed water are pumped respectively from the lower and upper chambers.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: January 1, 2013
    Assignee: Siemens Industry, Inc.
    Inventors: Mortimer Daniel Williams, John G. Donnelly, Eric M. Laliberte, J. Rafael Lazo, Juan Alejandro Segrelles Sacristan, Anselmo Garcia Gracia
  • Publication number: 20120205289
    Abstract: The present invention provides a method and an apparatus for recovery of spent lubricating oil. The evaporation of hydrocarbon fractions from spent lubricating oil is carried out in three steps. The first step is at approximately 150-1030 mbar and between 70-240° C. in which is greater than 99% water, greater than 99% of ethylene glycol and greater than 50% of hydrocarbon molecules with normal boiling point up to 310° C. are evaporated from spent oil. The second step is operated at 6-30 mbar and 200-2900 C in which predominantly gasoil and light vacuum gasoil fractions are evaporated. The third step is operated at 250-320° C. and 0.5-15 mbar in which mainly heavy vacuum gasoil (boiling range of 425 to 570° C. on ASTM D-1160 test) is evaporated from spent oil.
    Type: Application
    Filed: November 8, 2010
    Publication date: August 16, 2012
    Inventor: Rohit Joshi
  • Patent number: 8088275
    Abstract: A process treats a fluid stream of used fracturing fluid containing contaminants and forms a reconditioned fluid stream. Contaminants are removed by the combination of distillation, electrostatic agglomeration, decanting, and filtration or by distillation and optional filtering. Optionally, in each case, the filtered fluid stream is treated in a clay tower to remove residual contaminants.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: January 3, 2012
    Assignee: Gibson Energy ULC
    Inventors: Chad Randal, Larry Medhurst, Doug Hildebrandt
  • Publication number: 20110259795
    Abstract: A process of recovering base oil from lubrication oil that contains contaminants therein, the process comprises the steps of: (i) extracting a light diesel fraction from the lubrication oil; and (ii) distilling the lubricating oil under vacuum conditions after said extracting step (i) to obtain a base oil that is substantially free of said contaminants.
    Type: Application
    Filed: November 2, 2009
    Publication date: October 27, 2011
    Applicant: ANNDA ENERGY PTE LTD.
    Inventors: Yingsui Yin, Ming Feng, Thiam Seng Lee, Disong Zhang
  • Publication number: 20110226673
    Abstract: There is provided a portable oil isolation and decontamination system comprising a plurality of high heat energy generators that supply high heat energy to an oil isolation and decontamination unit. Each heat energy generator comprises a chamber for gasifying used rubber tires, waste oil, coal or other combustible materials for the production of volatile gases and high energy heat. The oil extractor unit comprises a pair of parallel, elongate rotating cylinders that each rotate within a common closed housing. Oil-rich material such as oilsands, oilshale, contaminated soil or used oil is introduced into one end of each rotating cylinder and is caused to migrate to the opposite end in cascading fashion as the cylinder rotates. High energy heat from the generators is directed at the rotating cylinders to indirectly heat the oil-rich material therein to vaporize the hydrocarbons as the rotating drum migrates the oil-rich material towards its collection end.
    Type: Application
    Filed: September 11, 2009
    Publication date: September 22, 2011
    Inventor: Louis Bilhete
  • Patent number: 7976699
    Abstract: A method and apparatus is provided for distilling and processing chemicals. The apparatus is particularly suited for processing and distilling difficult to distill compounds, and is capable of producing diesel fuel and other products from used oil at a quality level similar to that of products produced from virgin crude oil.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: July 12, 2011
    Inventor: Michael L. Kesler
  • Patent number: 7807047
    Abstract: A process treats a fluid stream of used fracturing fluid containing contaminants and forms a reconditioned fluid stream. Contaminants are removed by the combination of distillation, electrostatic agglomeration, decanting, and filtration. Optionally, the filtered fluid stream is treated in a clay tower to remove residual contaminants.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: October 5, 2010
    Assignee: Gibson Energy ULC
    Inventors: Chad Randal, Larry Medhurst, Doug Hildebrandt
  • Patent number: 7736469
    Abstract: A process for converting animal fats and/or other feedstocks into gas oil fuel including the steps of introducing material including the animal fats into a still pot in the form of liquor, extracting a volume of material from the still pot, heating the extracted material to a cracking temperature, reintroducing the extracted material back into the still pot, separating the lighter molecular weight compounds from the cracked material into a small fraction of volatile light ends and a second mixture of gas oil fuel in a distillation column collecting the second mixture of gas oil fuel by means of a condenser.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: June 15, 2010
    Inventor: John Taylor
  • Publication number: 20090223862
    Abstract: A method for recovering base oil from waste lubricating oil by separating base oil range constituents from a waste lubricating oil mixture, thereafter separating higher quality base oil constituents and lower quality base oil constituents from the base oil recovered from the waste lubricating oil mixture and thereafter treating the lower quality base oil constituents to produce marketable base oil. The total base oil produced from a waste lubricating oil mixture by this process is greater than the quantity producible by previous processes using only base oil separation from the waste lubricating oil mixture or processes which use only treatment of the base oil recovered from the waste lubricating oil mixture to produce the product base oil.
    Type: Application
    Filed: April 9, 2009
    Publication date: September 10, 2009
    Inventor: Martin R. MacDonald
  • Publication number: 20080210601
    Abstract: A vapor compression system (10), also known as a chiller, includes a refrigeration loop and a lubrication loop. The lubrication loop includes a lubrication reclamation system that further includes a still (42) and an ejector (44) to reduce a pressure in the still (42). The ejector (44) includes an input portion (46), an output portion 54 and a vent portion (50). The input portion (46), the output portion (54) and the vent portion (50) are in fluid communication with one another. The vent portion (50) of the ejector (44) is positioned in a vent line (48) associated with the still (42). The still (42) primarily contains a mixture of liquid refrigerant and lubricant. The input portion (46) of the ejector receives liquid or gas at a high pressure and expels the liquid or gas through the output portion (54) at an intermediate pressure. As the input fluid at a high pressure flows through the ejector (44), a low pressure is created at the vent portion (50).
    Type: Application
    Filed: July 7, 2005
    Publication date: September 4, 2008
    Inventor: Stephen L. Shoulders
  • Patent number: 7255785
    Abstract: An apparatus and a process for reclaiming fuel oils from waste oils. The apparatus and process is characterized in that waste oils are thermally cracked by combination of high pressure and vacuum in a sequence at high temperature. However, rapid thermal cracking is performed at even lower temperature of 300˜350° C. than at 400˜450° C. of conventional batch method. The semi-continuous method with bleeding process is employed and accordingly no pause stage becomes necessary to physically collect ash cake from the thermal cracking vessel as experienced from the conventional batch process. The ash cake contents drops from 5% of conventional method to 1.4% since slow reaction is a cause for oxidation problem which is related with formation of tar compounds and production rate of #2 diesel fuel oil increases 3 times more than batch process.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: August 14, 2007
    Inventors: Henry Kong, Charlie Jeong
  • 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: 7198715
    Abstract: A device for separating fluid mixtures, in particular for separating water from oil, includes a vacuum container (10) with several sub-chambers (26, 44, 40). At least one liquid constituent of the fluid mixture can be transported from the vacuum container after separation, by a transport device (12). The other constituents can be extracted from the vacuum container (10) in the form of gas and/or steam, using a vacuum pump (20). One of the sub-chambers (26) of the vacuum container (10) houses a heating device (28, 30), which heats the fluid mixture. The fluid mixture is guided into an additional sub-chamber (40), and is separated into its constituents by traversing a packed bed. Even cold and consequently viscous fluid mixtures can be supplied, due to the heating device, for separation inside the aforementioned vacuum container.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: April 3, 2007
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Knut Herges, Andreas Busch
  • Patent number: 7045038
    Abstract: There is disclosed a burnable used oil fuel product by the process comprising: (a) obtaining a used oil sample having at least 1% (by weight) aqueous substances; (b) heating the used oil sample to a temperature of from about 20° C. to about 60° C.; and (c) extracting a volume of water from the heated used oil by adding super critical CO2.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: May 16, 2006
    Assignee: Industrial Microwave Technologies, Inc.
    Inventor: Frederick Anthony Schaefer
  • Patent number: 6841061
    Abstract: An Anti-gelling agent for a hydrocarbon mixture containing a conjugated diene, which comprises (a) at least one compound selected from the group consisting of compounds having an NO radical in the molecule, and precursor compounds capable of forming an NO radical, (b) a phosphorus-containing compound, and (c) at least one compound selected from the group consisting of heterocyclic aldehydes, aromatic aldehydes and condensates of these aldehydes. Clogging in an apparatus for separating and refining a hydrocarbon mixture containing a conjugated diene can be prevented by adding the anti-gelling agent in the apparatus.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: January 11, 2005
    Assignee: Zeon Corporation
    Inventor: Keizo Ukita
  • Publication number: 20040173505
    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: Application
    Filed: March 3, 2003
    Publication date: September 9, 2004
    Inventor: Nouredine Fakhri
  • Patent number: 6759438
    Abstract: Methods for producing a substantially paraffinic Fischer-Tropsch product or a blended Fischer Tropsch product comprising a selected oxygenate concentration, and if required, a selected oxygenate concentration of specific individual oxygenates, are disclosed. The methods of the present invention measure oxygenate concentration using GC-AED. The oxygenate measurements obtained using the GC-AED may be used to adjust and control various processes used to produce, upgrade, or finish Fischer Tropsch products to provide Fischer Tropsch products with a selected oxygenate concentration, and if required, a selected oxygenate concentration of specific individual oxygenates.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: July 6, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Andrew Rainis, D J O'Rear
  • 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
  • Publication number: 20040011704
    Abstract: An apparatus and method for reclaiming a useful oil product, from waste oil provides an evaporation chamber in which waste oil is heated and vaporized, preferably at a temperature which causes some cracking of the oil. Hydrogen is injected into the vaporized oil, so to cause saturation of at least some of the olefins in the vaporized oil. The vaporized oil is then condensed and recovered as a useful oil product. The apparatus operates at substantially atmospheric pressure, or a pressure only slightly above atmospheric pressure.
    Type: Application
    Filed: January 6, 2003
    Publication date: January 22, 2004
    Inventor: Edward Carlton Shurtleff
  • Publication number: 20040007499
    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: Application
    Filed: October 10, 2002
    Publication date: January 15, 2004
    Inventor: Jeronimo Angulo Aramburu
  • Patent number: 6579442
    Abstract: Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditions.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: June 17, 2003
    Assignee: GE Betz, Inc.
    Inventor: Sherif Eldin
  • Publication number: 20030010676
    Abstract: Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditions.
    Type: Application
    Filed: May 22, 2001
    Publication date: January 16, 2003
    Inventor: Sherif Eldin
  • Patent number: 6447672
    Abstract: A continuous, hot vapor injection process and apparatus is provided for recovering lube oil base stocks from used lubricating oil containing distillable liquid hydrocarbons and water. Also disclosed is an asphalt blend composition containing an asphalt component and the bottoms from the above process.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: September 10, 2002
    Assignee: Marathon Ashland Pertoleum LLC
    Inventors: Howard F. Moore, Donald P. Malone
  • Patent number: 6440298
    Abstract: An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating means. The heater is used to heat the waste oil in the boiler to a temperature such that lighter hydrocarbons remain unvolatilized, trapping contaminants therewith. The separating means separates the volatilized lighter hydrocarbons from the unvolatilized heavier hydrocarbons and contaminants.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: August 27, 2002
    Assignee: Patent Holdings Ltd.
    Inventor: Edward Carlton Shurtleff
  • Patent number: 6402938
    Abstract: Used Motor Oil is re-refined by direct injection of a superheated, non-hydrogenating recycle vapor. The process operates at low pressures, preferably from atmospheric—10 atmospheres absolute. Preferably a significant amount of the energy required to vapor used motor oil is supplied in the form of increased sensible heat of a recycle vapor stream. Direct injection of superheated vapor reduces or eliminates fouling which can occur when indirect heat exchange is used to supply the heat needed to vaporize used motor oil.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: June 11, 2002
    Assignee: Marathon Ashland Petroleum LLC
    Inventors: Howard F. Moore, Arthur G. Shaffer, Jr.
  • Patent number: 6402937
    Abstract: A process for the direct contact heating and vaporization of UMO is disclosed. A superheated, but condensable, vapor heats and vaporizes distillable liquid hydrocarbons from a waste motor oil stream, producing an overhead vapor fraction of injected superheated vapor and vaporized boiling range components. This material is cooled and partially condensed to produce lube boiling range liquid hydrocarbons and a vapor phase, which is condensed to produce a recycle liquid phase. Recycle liquid is pumped and then heated to produce superheated vapor for recycle to contact the UMO.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: June 11, 2002
    Assignee: Marathon Ashland Petroleum LLC
    Inventors: Arthur G. Shaffer, Jr., Howard F. Moore
  • Patent number: 6398948
    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 18, 2000
    Date of Patent: June 4, 2002
    Assignee: Miami University
    Inventors: Jeffrey H. Sherman, Richard T. Taylor
  • Publication number: 20020036158
    Abstract: A method for separating used oil in a simple batch process into usable fractions. A pretreatment step involves forming a mixture of the used oil and specified pretreatment chemicals. A reduced pressure is maintained throughout the process along with mixing of the formed mixture. Heat is applied at a predetermined rate corresponding to vaporization and recovery of usable fractions of aqueous, light hydrocarbons, base oil, and a pumpable residual. Each distillate fraction is removed as a vapor, condensed and collected. Undesirable cracking is avoided by maintaining a reduced pressure and avoiding rapid or localized heating within the mixture by mixing during the distillation process. The resulting aqueous and light fractions can be reused in the process or otherwise used. The pumpable residual can also be sold as a high quality asphalt extender. The recovered base oil fraction may be sold as a diesel fuel extender, lubricant, catalytic cracker feed stock, or #4 fuel oil for stationary power generators.
    Type: Application
    Filed: August 6, 2001
    Publication date: March 28, 2002
    Inventor: Douglas P. Austin
  • Patent number: 6346173
    Abstract: The invention essentially relates to a method for vacuum distillation of liquids that includes feeding a polar liquid into a vacuum-producing liquid-gas jet apparatus as a motive liquid if evacuation of a nonpolar gas-vapor medium is to be effected. Further, the method includes condensing the nonpolar gas-vapor medium, forming a gas-liquid mixture, disengaging a gaseous phase from the mixture, forming a liquid emulsion containing the polar liquid and a nonpolar condensate, separating the emulsion into continuous layers, withdrawing the nonpolar condensate and recycling the polar liquid by pumping it back into the liquid-gas jet apparatus. A nonpolar liquid is to be used as the motive liquid of the liquid-gas jet apparatus if evacuation of a polar gas-vapor medium is required. There is another variant of the method applicable when an evacuated gas-vapor medium contains both polar and nonpolar components.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: February 12, 2002
    Inventors: Serguei A. Popov, Evgueni D. Petroukhine
  • 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: 6287455
    Abstract: The present invention provides a means of removing water, antifreeze and fuel from lubricating or hydraulic oil by evaporating these impurities and venting them out of the purifier. The oil is heated by heat of an exposed horizontal heating wand within the evaporator. The oil then passes over the upper lip of the evaporator and cascades downward over the evaporator's ridged outer surface, thereby impeding the flow of oil and increasing the rate of evaporation of the impurities. The evaporated impurities then rise upward along the interior of the domed cover and are vented out of the purifier.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: September 11, 2001
    Inventor: C. Barclay Whitmore
  • Patent number: 6277247
    Abstract: The invention pertains to the field of the petrochemical industry. The invention essentially relates to a system and method that includes feeding of a liquid having molecular weight more than 100 (in atomic mass units) into a nozzle of an ejector as a motive liquid, and delivery of a mixed medium from the ejector into a shaped reservoir, where flow velocity is reduced and static pressure is boosted. The outlet of the ejector is connected to the inlet of the shaped reservoir, the inlet of a separator is connected to the outlet of the shaped reservoir. The introduced method and the system for its embodiment ensure a more efficient operation.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: August 21, 2001
    Inventor: Serguei A. Popov
  • Patent number: 6238551
    Abstract: In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorganic or organic bases to the substrate of the 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. A solvent is then mixed with the resulting distillate to extract 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: December 17, 1999
    Date of Patent: May 29, 2001
    Assignee: Miami University
    Inventors: Jeffrey H. Sherman, Richard T. Taylor, Amanda L. Hofacker, James W. Hershberger, Garrett M. Conn, William A. Gorman
  • Patent number: 6117309
    Abstract: A process for recovering a base oil of lubricating viscosity from used oil in which, following optional pretreatment, used oil is re-refined by distilling it in distillation apparatus having multiple theoretical plates. Impurities are then extracted from the lube range distillate fraction or fractions with a liquid extractant such as N-Methyl-2-Pyrrolidone (NMP) at a temperature below the temperature, if any, of complete miscibility of the extractant and the oil. The oil and extractant are then separated whereupon the extractant is re-used in the process and the oil is subject to further treatment, as necessary, for targeted uses.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: September 12, 2000
    Assignee: Probex Corporation
    Inventors: Alexander D. B. Daspit, Martin MacDonald, Thomas G. Murray
  • Patent number: 6106699
    Abstract: The invention is directed to a process of reducing the chlorine content of oil as well as its propensity to foul during subsequent distillation processes. The process heats the oil to a temperature in the range of 400 to 700 F and contacts the oil with a non-oxidizing gas, such as steam, for a residence time of at least several minutes. Thereafter the oil may be distilled and/or finished to a base lubricating oil or other distillate product. The oil subject to the process may be used oil, and can be subject to a dewatering or removal of light contaminants treatment prior to being subject to the process.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: August 22, 2000
    Assignee: Probex
    Inventors: Martin R. MacDonald, Alexander D.B. Daspit, Thomas G. Murray
  • Patent number: 6090273
    Abstract: Used lubricating oil containing unacceptable levels of moisture and ash-forming contaminants is dried and clarified by a process that includes flash drying, heat treating at a temperature within the range of 600.degree.-700.degree. F. for 2-5 hours, and cooling the heat treated oil. Optional internal recycle of the product from each of these steps can help enhance the clarification process.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: July 18, 2000
    Assignee: U.S. Filter Recovery Services (Mid-Altantic, Inc.)
    Inventor: Geza L. Kovacs
  • Patent number: RE38366
    Abstract: A method and apparatus for re-refining used oil, in which the used oil is processed in at least one cyclonic vacuum evaporator comprising a void evaporation chamber (4) into which feedstock is tangentially injected, and in which a fraction of the feedstock is condensed in a spray condenser (7) communicating with the evaporation chamber (4).
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: December 30, 2003
    Assignee: Avista Resources, Inc.
    Inventor: Kalevi John Kenton