Abstract: The method of reclaiming usable products from sludge is disclosed. A predetermined level of solvent within an extractor is heated, below boiling point, and dried sludge is immersed within the headed solvent. The solvent is a non-polar or polar aprotic solvents, such as ethyl acetate. The non-solid products, an oil/solvent mixture, within the sludge are separated and transferred to at least one evaporator with a concentration of between 5-25% oil in the solvent. The oil and solvent are is separated in one or more evaporators to remove approximately 80%-90%, and preferably 70%-95%, of the solvent. The solids are moved to a desolventizer for removal of the residual solvent and are then dried to a moisture content of below 25%, and preferably between 10 to 15%.

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.

Abstract: A method for recycling used lubricant oils into clean oils including mixing the used lubricant oil with a low and/or non-polar hydrocarbon solvent, like an aliphatic or oxygenated compound of 4-7 carbons linear molecule, and subjecting the mixture used lubricant/solvent(s) to at least one filtration with a medium of about 50,000 Daltons or less and the mixture is separated from the solid flocculated material.

Abstract: An apparatus for removing contaminants from used lubricating or hydraulic oil includes a fluid transfer unit that includes an inlet port and an outlet port. The inlet port can be in fluid communication with a source of the used lubricating or hydraulic oil. The fluid transfer unit can define a fluid path. The apparatus can include a first adsorbent and a second adsorbent in the fluid path. The first adsorbent can include cellulose. The second adsorbent can include silica gel.

Abstract: A process for recovering used industrial and motor lubricating oils. In a first embodiment (for used industrial oils), the used lubricating oil is mixed with clay in a reactor. The mixture is preferably heated to between 105 and 200 degrees Celsius. The temperature should not be too great, to avoid “cracking” the oil (i.e., breaking molecular chains in the oil). After a certain period of time, the mixture is pumped through filters. Cakes of clay and contaminants remain in the filters, while the oil emerges without the contaminants. A second embodiment (for removing ash or soot, very fine carbon particles and other organic compounds from used motor oils) is the same as the first embodiment, except that before the mixture is passed through the filters, a centrifuge is used to remove most of the clay contaminated with soot, so that it will not block the filters.

Abstract: A process for recovering used industrial and motor lubricating oils. In a first embodiment (for used industrial oils), the used lubricating oil is mixed with clay in a reactor. The mixture is preferably heated to between 105 and 200 degrees Celsius. The temperature should not be too great, to avoid “cracking” the oil (i.e., breaking molecular chains in the oil). After a certain period of time, the mixture is pumped through filters. Cakes of clay and contaminants remain in the filters, while the oil emerges without the contaminants. A second embodiment (for removing ash or soot, very fine carbon particles and other organic compounds from used motor oils) is the same as the first embodiment, except that before the mixture is passed through the filters, a centrifuge is used to remove most of the clay contaminated with soot, so that it will not block the filters.

Abstract: Precipitation vessel for precipitation of flocculants from lubricating oil includes a hollow housing having an interior volume capable of containing oil; an entry port capable of allowing oil to enter into the interior volume; a stirrer capable of stirring contained oil; a heater capable of heating the contained oil; a product exit port capable of allowing oil to exit the interior volume; an upper exterior access port; and a lower exterior access port. Contaminated lubricating oil can be cleaned from solid particulates by a method of providing a vessel for containing oil; providing contaminated lubricating oil to the vessel; contacting the contaminated lubricating oil with a coagulant, and, maintaining the resulting mixture at a mildly elevated temperature throughout the vessel, inducing flocculation of solid particles and settlement of flocculated particles under low thermo-current, if not thermo-current-free, conditions; and drawing off lubricating oil cleaned from settled flocculated solid particles.

Abstract: Embodiments of a process for improving a re-refined lube oil stream are provided. The process comprises the steps of introducing a gas stream comprising hydrogen (H2) and the re-refined lube oil stream comprising hydroprocessed used lube oil to a hydrogenation reactor that contain Group VIII catalyst. A gas to oil feed ratio rate of from about 30 to about 100 Nm3 H2/m3 is used to introduce the streams to the reactor. The hydroprocessed used lube oil is hydrogenated with the H2 in the reactor such that an effluent is formed containing hydrogenated re-refined lube oil having about 2 wt. % or less of aromatics and about 55 wt. % or less of naphthenes. The reactor is operating at a temperature of from about 250 to about 300° C.

Abstract: Lubricating oil compositions of the invention comprise a major amount of a base oil of lubricating viscosity and an effective amount of at least one lubricant antioxidant, the base oil comprising a blend of a Group III base oil derived from a synthesis gas, and a Group IV base oil wherein the ratio of the Group III to Group IV base oils is such that the lubricating composition exhibits an oxidation stability determined by a measure of high temperature deposits that is less than half the mathematical sum of the oxidative stability determined for each of the unblended Group III and Group IV oils containing the same antioxidant in the same amount as in the blend.

Abstract: The invention provides a lubricating base oil with a saturated component content of 90% by mass or greater, a proportion of cyclic saturated components of no greater than 40% by mass of the saturated components, a viscosity index of 110 or greater, an aniline point of 106 or greater and an ?-methylene proportion of 14-20% of the total constituent carbons, as well as a lubricating oil composition comprising the lubricating base oil.

Abstract: A process for recovering used lubricating oils, and oils recovered using the process. In a first embodiment (for used industrial oils), the used lubricating oil is mixed with clay in a reactor. The mixture is preferably heated to between 80 and 200 degrees Celsius. The temperature should not be too great, to avoid “cracking” the oil (i.e., breaking molecular chains in the oil). After a certain period of time, the mixture is pumped through filters. Cakes of clay and contaminants remain in the filters, while the oil emerges without the contaminants. A second embodiment (for removing ash or soot, very fine carbon particles and other organic compounds from used motor oils) is the same as the first embodiment, except that before the mixture is passed through the filters, a centrifuge is used to remove most of the clay contaminated with soot, so that it will not block the filters.

Abstract: A method of recovering hydrocarbon or synthetic base oils from used oil-based drilling mud utilizes acid to deactivate emulsifiers in the drilling mud for altering the emulsion stability and permitting removal of the solids contained in the drilling mud using conventional separation such as centrifugation. A surfactant is typically added to prevent water-wetting as a result of the addition of the acid. The recovered base oil contains substantially all of the deactivated emulsifiers, which can be reactivated through the addition of lime, allowing new drilling fluids to be prepared without the need to add significant amounts of emulsifier to the recycled base oil.

Abstract: A solid lubricant and composition useful for lubricating the flanges of locomotive wheels, railcar wheels, rail track and in applications where it is desirable to reduce friction when metal contacts metal. The solid lubricant having from about twenty-five percent to about seventy percent by volume of a polymeric carrier, about five to seventy-five percent by volume of organic and inorganic extreme pressure additives, about zero to twenty percent by volume synthetic extreme pressure anti-wear liquid oil, and about zero to one percent by volume optical brightener.

Abstract: On producing a lubricant which is used in making a lubrication layer included in a magnetic disk from the lubricant, a phosphorus-containing compound is removed from a raw-material lubricant including the phosphorus-containing compound to produce the lubricant. The magnetic disk includes a substrate on which at least a magnetic layer, a protection layer, and the lubrication layer formed by the use of the lubricant are successively formed.

Abstract: The present invention describes use of use of a metal compound to control the quality of a functional fluid. Additionally, the present invention concerns a method for controlling the quality of a functional fluid comprising the steps of: adding a metal compound to a component of a lubricant; mixing the component with a base oil; measuring the concentration of the metal compound in the functional fluid; and comparing the expected concentration of the metal compound with the measured concentration.

Abstract: A process for recovering used lubricating oils, and oils recovered using the process. In a first embodiment (for used industrial oils), the used lubricating oil is mixed with clay in a reactor. The mixture is preferably heated to between 80 and 200 degrees Celsius. The temperature should not be too great, to avoid “cracking” the oil (i.e., breaking molecular chains in the oil). After a certain period of time, the mixture is pumped through filters. Cakes of clay and contaminants remain in the filters, while the oil emerges without the contaminants. A second embodiment (for removing ash or soot, very fine carbon particles and other organic compounds from used motor oils) is the same as the first embodiment, except that before the mixture is passed through the filters, a centrifuge is used to remove most of the clay contaminated with soot, so that it will not block the filters.

Abstract: A filter aid and a method of using the same are disclosed that effectively removes contaminants from water-based metal forming liquids used in aluminum forming, rolling and other metal working processes. The filter aid includes a cellulosic material and a cationic polymer flocculating agent that is mixed with contaminated metal working fluid for a predetermined amount of time. The contaminated metal working fluid is then filtered through the filter aid, thereby removing the substantially all of the contaminants therein and allowing purified metal working fluid to return to the process system without carrying contaminants that will harm the surfaces of the metal being worked and the device that forms them. An acid material may be optionally added to the metal forming liquid, the acid serving to maintain the pressure and flow rate at normal levels by controlling clogging in the filter.

Abstract: A filter aid and a method of using the same are disclosed that effectively removes contaminants from water-based metal forming liquids used in aluminum forming, rolling and other metal working processes. The filter aid includes a cellulosic material and a cationic polymer flocculating agent that is mixed with contaminated metal working fluid for a predetermined amount of time. The contaminated metal working fluid is then filtered through the filter aid, thereby removing the substantially all of the contaminants therein and allowing purified metal working fluid to return to the process system without carrying contaminants that will harm the surfaces of the metal being worked and the device that forms them. An acid material may be optionally added to the metal forming liquid, the acid serving to maintain the pressure and flow rate at normal levels by controlling clogging in the filter.

Abstract: A method and system of creating a cylinder oil having a target TBN ranging from 40 to 70 for use in a two-stroke en line. Fresh system oil having a TBN less than 10 is provided. The fresh system oil is used in the two-stroke engine to product partially used system oil. An initial fluid containing at least some partially used system oil is provided. A first TBN of the initial fluid is determined. Cylinder oil having the target TBN is created by blending the initial fluid having the first TBN with at least one suited additive. The cylinder oil is provided to the two-stroke engine.

Abstract: The present invention relates to refrigerant compositions comprising a fluorocarbon, an oxygenated lubricant, a non-oxygenated lubricant, and a compatibilizer.

Abstract: A method refines a lubricant comprising a compound having a perfluoropolyether structure via supercritical extraction. A lubricant is refined using the method and a magnetic recording medium that utilizes the refined lubricant. The refined lubricant exhibits excellent lubrication performance and long term stability in the magnetic recording medium. In one embodiment of the supercritical extraction, the lubricant contacts an extracting medium of supercritical carbon dioxide under a predetermined condition in a pressure vessel to remove ionic impurities and perfluoropolyether compounds having a weak polarity terminal group contained in the lubricant.

Abstract: Homopolymers and copolymers of an esterified reaction product of an epoxidized mono-hydroxyl alcohol and a free radical polymerizable monomer are highly effective demulsifying agents. The molecular weight of the polymer is between from about 10,000 to about 500,000. The epoxidized mono-hydroxyl alcohol is preferably a reaction product of a C6–C30 linear or branched alcohol and an alkylene oxide. The alkylene oxide is preferably either ethylene oxide, propylene oxide or butylenes oxide or a mixture thereof. The free radical polymerizable monomer is preferably a vinyl aromatic compound or an acrylic or methacrylic based monomer. The polymer preferably comprises a micellar assembly. Such polymers are highly effective in demulsifying crude oils having API gravities of from 8 to 28 or a crude oil having a viscosity between from about 3 to about 10,000 CPS @ at 25° C.

Abstract: A method to refine a lubricant on a magnetic recording medium includes a compound A including a perfluoropolyether molecular structure having two hydroxyl groups at each of two ends and a compound B including the perfluoropolyether molecular structure having one hydroxyl group at each of two ends. The method includes putting the lubricant into a pressure vessel set at a pressure and a temperature and removing the compound B dissolved in an extracting medium of a supercritical carbon dioxide fluid that flows at a predetermined rate through the pressure vessel held at a predetermined temperature and at a predetermined pressure. The method performs recovering the compound A dissolved in the extracting medium that flows through the pressure vessel held at the predetermined pressure and at a temperature lower than the predetermined temperature or at the predetermined temperature and at a pressure higher than the predetermined pressure.

Abstract: The present invention relates to refrigerant compositions comprising a fluorocarbon, an oxygenated lubricant, a non-oxygenated lubricant, and a compatibilizer. The present invention further relates to methods for replacing a chlorofluorocarbon and/or hydrochlorofluorocarbon and a non-oxygenated lubricant composition with a fluorocarbon and an oxygenated lubricant composition in a compression refrigeration system without flushing residual non-oxygenated lubricant from the system.

Abstract: A method refines a lubricant comprising a compound having a perfluoropolyether structure via supercritical extraction. A lubricant is refined using the method and a magnetic recording medium that utilizes the refined lubricant. The refined lubricant exhibits excellent lubrication performance and long term stability in the magnetic recording medium. In one embodiment of the supercritical extraction, the lubricant contacts an extracting medium of supercritical carbon dioxide under a predetermined condition in a pressure vessel to remove ionic impurities and perfluoropolyether compounds having a weak polarity terminal group contained in the lubricant.

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.

Abstract: A method to refine a lubricant on a magnetic recording medium includes a compound A including a perfluoropolyether molecular structure having two hydroxyl groups at each of two ends and a compound B including the perfluoropolyether molecular structure having one hydroxyl group at each of two ends. The method includes putting the lubricant into a pressure vessel set at a pressure and a temperature and removing the compound B dissolved in an extracting medium of a supercritical carbon dioxide fluid that flows at a predetermined rate through the pressure vessel held at a predetermined temperature and at a predetermined pressure. The method performs recovering the compound A dissolved in the extracting medium that flows through the pressure vessel held at the predetermined pressure and at a temperature lower than the predetermined temperature or at the predetermined temperature and at a pressure higher than the predetermined pressure.

Abstract: The invention relates to a method for regenerating reaction lubricant residues containing acid organic lubricants refused and processed during cold forming and multivalent metal ions and phosphate ions, wherein said reaction lubricant residues undergo the following procedural steps: a) precipitating metal ions from the metal organic compounds by adding phosphoric acid and/or acid phosphoric acid esters; b) dissolving water-soluble impurities by adding water; c) separating the solids from the lubricant components and from the aqueous phases that are incompatible with the oily lubricant components, and whereby d) acid phosphoric acid esters for adjusting the free acid at a value of less than 10 points and for adjusting a total acidity point value of less than 70 is adjusted at a free acid. total acidity ratio having a value in the range of 0.15 to 0.5. The separation indicated in step c) preferably occurs by means of a centrifuge at 2,000 to 3,000 g, especially at 8,000 to 15,000 g.

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.

Abstract: The total or a partial quantity of lubricant oil for automotive vehicles is exchanged at a gas service station when a vehicle visits for its fuel supply. The lubricant oil is maintained with low values of contaminates, while extracted waste oil is purified and supplemented with lacking additive agents for reuse as fresh lubricant oil. An impurities removal equipment has a centrifuge and a filter device for the purification.

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.

Abstract: A composition and method for pretreating the internal metal surfaces an internal combustion engine to remove varnish and to neutralize zinc dialkyldithiophosphate in order to provide for maximum bonding of a fluoropolymer with the surfaces of the internal combustion engine, the composition including tripropylene glycol methyl ether.

Abstract: A process for improving the quality of lubricating base oils, which process comprises contacting a lubricating base oil with dry activated carbon.