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| Number | Title | Issue Date |
| 7074169 | Wheel-guiding device and methods of use thereof A wheel-guiding device comprises a handle connected to a member of a U-shaped member and the handle is preferably essentially perpendicular to a plane of the U-shaped member for guiding the motion of a preferably wheel. The handle is extendable for adjusting the len... | 07/11/2006 |
| 6589417 | Thermal apparatus and process for removing contaminants from oil Used oil is treated in a reactor to remove contaminants. The reactor comprises a rotating vessel housed within a heating chamber. The inside of the vessel is indirectly heated by conduction through the vessel walls. The vessel contains a permanently resid... | 07/08/2003 |
| 6372122 | Method of removing contaminants from petroleum distillates 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 inorga... | 04/16/2002 |
| 6350372 | Mercury removal in petroleum crude using H2S/C The present invention relates to the removal of mercury and other heavy metals from a hydrocarbon feedstream. The process involves contacting the hydrocarbon feedstream with a feedstream-soluble sulfur compound and then contacting the hydrocarbon feedstre... | 02/26/2002 |
| 6320090 | Method of removing contaminants from petroleum distillates 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... | 11/20/2001 |
| 6174431 | Method for obtaining base oil and removing impurities and additives from used oil products 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 aid... | 01/16/2001 |
| 5942121 | Method and apparatus for filtering, degassing, dehydrating and removing products of ageing in petroleum oils The invention relates to separating different substances, more concretely, to a method and apparatus for filters, degassing, dehydrating and removing products of ageing in insulating and other petroleum oils. The technical result is that the aforesaid pha... | 08/24/1999 |
| 5795462 | Apparatus and method for reclaiming useful oil products from waste oil Apparatus for reclaiming a useful oil product has an evaporation chamber, including an inlet for the waste oil, and an outlet for the vaporized oil, as a useful oil product. Burners are provided for heating the evaporation chamber to vaporized oil from th... | 08/18/1998 |
| 5573656 | Process for converting acid sludge to asphalt A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 725 degrees Fahrenheit, cooling the heated oil, adding an oxidizing agent to the oil,... | 11/12/1996 |
| 5556548 | Process for contaminated oil reclamation 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 gra... | 09/17/1996 |
| 5507307 | Method and apparatus for recycling waste lubrication oil for reuse as fuel oil A method for recycling waste lubrication oil for use as fuel oil includes pumping new fuel oil from a source and monitoring the flow rate of the new fuel oil; pumping waste oil from a source through at least one filter and adjusting the flow rate of the w... | 04/16/1996 |
| 5478463 | Method of reducing sludge and varnish precursors in lubricating oils 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 partic... | 12/26/1995 |
| 5288392 | Process for converting acid sludge to intermediate sludge A process for converting the acid sludge produced by waste oil refineries into an acid sludge intermediary which can be used in the production of asphaltic mixtures. The process includes contacting the entire surface area of acid sludge with a pH altering... | 02/22/1994 |
| 5286380 | Apparatus for contaminated oil reclamation 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 g... | 02/15/1994 |
| 5225081 | Method for removing polynuclear aromatics from used lubricating oils Used lubricating oils can be rejuvenated by passing the oil through a filter system comprising a hollow solid composite that contains a thermoplastic binder and an active filter media of a chemically active filter media, a physically active filter media, ... | 07/06/1993 |
| 5219471 | Removal of metals and water-insoluble materials from desalter emulsions A process for measuring and treating oil-water stable emulsions derived from crude oil desalters is provided. Emulsion volume is measured, the emulsion is withdrawn, blended with aromatic-rich hydrocarbon, heated and three phases--water, oil and solids--a... | 06/15/1993 |
| 5209839 | Method of removing hydroperoxides from lubricating oils using sodium hydroxide and a metal thiophosphate NaOH can be used to remove hydroperoxides from a lubricating oil provided the oil contains a metal thiophosphate. This extends the useful life of the oil and the equipment being lubricated. In a preferred embodiment, the NaOH is immobilized within the lub... | 05/11/1993 |
| 5164101 | Method for reducing piston deposits Piston deposits resulting from neutralizing combustion acids present in the lubricating oil circulating within the lubrication system of an internal combustion engine are reduced or eliminated by first cntacting the acids with a soluble weak base in the p... | 11/17/1992 |
| 5110364 | Processes for decontaminating polluted substrates Substrates polluted with toxic substances are treated in-situ with solvated electrons prepared chemically or electrochemically. The process is useful in treating porous and nonporous substrates, such as earth, clay, sand, soils, concrete, asphalt, wood, b... | 05/05/1992 |
| 5069799 | Method for rejuvenating lubricating oils A filter system containing, in series, a first filter media having a chemically active filter media, a physically active filter media, or mixtures thereof and a second filter media having an inactive filter media can effectively rejuvenate used lubricatin... | 12/03/1991 |
| 5068044 | Method for reducing piston deposits Piston deposits resulting from neutralizing combustion acids present in the lubricating oil circulating within the lubrication system of an internal combustion engine are reduced or eliminated by first contacting the acids with a soluble weak base in the ... | 11/26/1991 |
| 5019245 | Method for recovery of hydrocarbons form contaminated soil or refuse materials A method is provided for separating an inert solid substantially inorganic fraction comprising sand or soil from a tarry or oily organic matter in a feedstock. The feedstock may be contaminated soil or tarry waste. The feedstock is combined with pulverize... | 05/28/1991 |
| 4977871 | Removal of carcinogenic hydrocarbons from used lubricating oil using activated carbon A system for the substantial removal of polynuclear aromatic compounds from lubricating oil used to lubricate the engine of a motor vehicle comprising a sorbent located within the lubricating system and through which the lubricating oil circulates which i... | 12/18/1990 |
| 4931161 | Cleanup of oily wastes A process is disclosed for removing hydrocarbons from oily wastes. According to the process, the oily wastes are mixed with solids and a binder and then granulated. The granules thus formed are contacted with solvent to extract hydrocarbons from the granu... | 06/05/1990 |
| 4919792 | Clarification of slurry oil A process for removing catalyst fines from slurry oil is disclosed. A settling reagent, such as coal, alumina, or coke, is added to a fines containing heavy oil bottoms product from a fractionator downstream of a catalytic cracking unit. The settling reag... | 04/24/1990 |
| 4906389 | Method for reducing piston deposits Piston deposits resulting from neutralizing combustion acids present in the lubricating oil circulating within the lubrication system of an internal combustion engine are reduced or eliminated by first contacting the acids with a soluble weak base in the ... | 03/06/1990 |
| 4865742 | Method of treating polluted oil-in-water emulsions or microemulsions A method of treatment of polluted emulsions or micro-emulsions (10) of oil in water, said method making use of tangential filtering through at least one membrane (1) constituted by a porous microfiltration structure which is constituted by titanium oxide,... | 09/12/1989 |
| 4784751 | Method and apparatus for reclaiming contaminated oil Contaminated oil is reclaimed for fuel use by pumping same through an oil filter into one side of a divided tank then through a heater to burn off water and antifreeze and then into the other side of the divided tank where the oil is blended with other cl... | 11/15/1988 |
| 4623448 | Removing halogenated polyphenyl materials from used oil products A method and an apparatus are provided for removing halogenated polyphenyl materials from used or waste oil supplies. Waste or used lube stock is subjected to rerefining procedures in order to remove many of the impurities found in such waste or used stoc... | 11/18/1986 |
| 4551234 | Reclaiming lube oil in MRS unit Regenerated sorbent employed for refining of heavy crude feedstocks is used to remove contaminants from specialized hydrocarbons, especially used motor oil. The simultaneous operation of a decontaminating unit supplied with regenerated sorbent particulate... | 11/05/1985 |
| 4502948 | Reclaiming used lubricating oil A method for purifying used oil without the use of hydrogen comprising contacting a demetallized used oil with an acid such as sulfuric acid and an adsorbent such as clay.... | 03/05/1985 |
| 4498992 | Process for treating contaminated transformer oil A process for treating contaminated transformer oil which comprises heating the contaminated transformer oil in a first heater to a temperature in the range of 100° to 125° F., passing the heated contaminated oil from the first heater through an adsorbe... | 02/12/1985 |
| 4435270 | Re-refining lubricating oil in a bed of oil shale A method of reclaiming usable stock from used lubricating oil includes passing the used oil through a bed of oil shale containing kerogen. The shale removes impurities from the oil. The shale is then heated to convert the kerogens to shale oil in the pres... | 03/06/1984 |
| 4432865 | Process for treating used motor oil and synthetic crude oil A process for treating used motor oil or synthetic crude oil comprising: (i) contacting said used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compou... | 02/21/1984 |
| 4431524 | Process for treating used industrial oil A process for rerefining used industrial oil comprising the steps of: (i) contacting said oil with an aqueous solution of the basic salt of an alkali metal to precipitate metal contaminants, polar compounds or particulates from said oil and to neutralize ... | 02/14/1984 |
| 4431523 | Upgrading fuel fractions in a re-refined oil process In a process for the re-refinement of used lubricating oil containing fuel fraction, an upgraded fuel fraction is provided by combining fuel fraction with demetallized lubricating oil prior to the hydrotreatment stage.... | 02/14/1984 |
| 4326953 | Device for removing contaminating particles from lubricating oil Contaminating particles in lubricating oil have a density higher than the density of the oil. The present invention provides a device for removing the contaminating particles by settling out the heavier particles and separating them from the oil. The devi... | 04/27/1982 |
| 4255252 | Procedure for the reprocessing of used lubricating oils A method for reprocessing used lubricating oils is disclosed wherein the oil is dried, treated with finely dispersed sodium metal at elevated temperature, the remaining free or organically bound metal is decomposed by means of an active hydrogen containin... | 03/10/1981 |
| 4247389 | De-ashing lubricating oils A process for the production of an essentially ash-free oil stock from a lubricating oil containing ash-forming components comprising (a) contacting said lubricating oil with an aqueous ammonium salt treating agent; (b) removing a major portion of the water fr... | 01/27/1981 |
| 4179019 | Apparatus for reclaiming used lubricating oils A used lubricating oil reclamation apparatus in which filters, heat exchangers, a vaporizer unit, pumps and other necessary equipment are all contained in a wheeled cabinet. The oil to be reclaimed is pumped through a warming heat exchanger, a first filte... | 12/18/1979 |
