WO2005111181A1 - Process for the purification of spent process oil - Google Patents
Process for the purification of spent process oil Download PDFInfo
- Publication number
- WO2005111181A1 WO2005111181A1 PCT/SE2005/000701 SE2005000701W WO2005111181A1 WO 2005111181 A1 WO2005111181 A1 WO 2005111181A1 SE 2005000701 W SE2005000701 W SE 2005000701W WO 2005111181 A1 WO2005111181 A1 WO 2005111181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- mixture
- group
- purification
- spent
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents
- C10G21/06—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents characterised by the solvent used
- C10G21/12—Organic compounds only
- C10G21/16—Oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents
- C10G21/06—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents characterised by the solvent used
- C10G21/12—Organic compounds only
- C10G21/20—Nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents
- C10G21/06—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents characterised by the solvent used
- C10G21/12—Organic compounds only
- C10G21/27—Organic compounds not provided for in a single one of groups C10G21/14 - C10G21/26
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/10—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for with the aid of centrifugal force
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0008—Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/02—Working-up used lubricants to recover useful products ; Cleaning mineral-oil based
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
Definitions
- the present invention relates to a process for the purification of spent process oils, i.e. process oils contaminated with solid or dissolved impurities, which have been accumulated in the oil.
- the present invention further relates to the use of various substances for the purification of spent process oil.
- process oil as used herein and in the claims generally relates to oil used in various industrial processes.
- process oils are rolling oil, honing oil, engine lubricating oil, mineral oil, paraffin oil, and paraffin oil containing chlorine.
- a common method for the destruction of process oils is destruction by burning but such destruction causes environmental problems; this is par- ticularly true for chlorine-containing oils of the type chloroparaffinic oils.
- oils based on vegetable or min- eral oil
- phase chemical methods based on organic polymers and/or polymer mixtures comprising a charged control polymer (W095/14752)
- W095/14752 a charged control polymer
- Separation with several phases involved may be employed for applications where solid dispersed impurities or dissolved substances can not be separated from a fluid with other conventional techniques such as filtration or centrifugal separation.
- Such separations are in general based on surface- chemical phenomena and comprise choosing a suitable separa- tion additive.
- Said separation additive is under given conditions substantially insoluble in the fluid to be purified.
- the aim of the chemical separation process is to separate the target fluid to be processed from at least one impurity.
- Chemical phase separation when a substance in the fluid to be purified, depending on its interactions with the surrounding molecules migrates to the separation additive.
- Chemical phase separation may constitute steps comprising more than two phases. This may be accomplished for instance by using several different separation media, which are not miscible.
- chloroparaffinic oils used at "heavy duty operations" within steel industry and other manufacturing processes regarding machining of steel and iron and with the type of impurities (lubricants and particular impu- rities) that are thereby accumulated in the oil.
- the present invention solves the problems of unnecessary destruction of contaminated process oils by admitting recycling of contaminated process oils after purification, which can not be achieved by any known technology. According to the invention there is provided a process which solves the problem to purify process oils from solid and dissolved impurities by means of a combined surface chemical and mechanical separation process.
- the process according to the invention for the purification of contaminated process oil thus comprises in a first step the addition to the contaminated oil to be purified of a specific separation additive, which by chemical interactions absorbs contaminating solid, or dissolved impurities in the process oil, and in a second step, separation of said separation additive and absorbed impurities using a method selected from the group consisting of static settling, centrifugal separation, vacuum filtration, press filtration, pre-coat filtration and centrifugal filtration.
- a process for the purification of spent process oil comprises, mixing the process oil with an additive comprising a liquid mixture of a) at least one alkanolamine, and b) at least one member selected from the group consisting of alkanoic acids, and alkenoic acids having from 6 to 18 carbon atoms and the melting point/points such that the mix- ture of a) and b) is liquid at the temperature at which the process is carried out, with a pH-value of said mixture of a) and b) in the range of 5 to 8, preferably 6 to 7, and most prefera- bly 6.3, and said mixture being substantially insoluble in the process oil, forming a two phase mixture upon mixing, and subsequent separation of the phase with process oil from the phase with said mixture of a) and b) with absorbed contaminants .
- the present invention thus comprises a process, wherein a) is selected from the group consisting of mono-, di-, and trietha- nolamine.
- the present invention comprises a process, wherein a) is triethanolamine.
- the present invention comprises a process, wherein b) is selected from the group consisting of lauric acid, oleic acid, pentadecanoic acid, decenoic acid, 2- ethylhexanoic acid, and caprylic acid.
- the present invention comprises a process, wherein b) is selected from the group consisting of 2- ethylhexanoic acid and caprylic acid.
- the present invention comprises a process, wherein the said separation of the two phases is carried out by one method or a combination of methods selected from the group consisting of static settling, centrifugal separation, vacuum filtration, press filtration, pre-coat filtration and centrifugal filtration.
- the present invention comprises a process, wherein the mixture of a) and b) is added in an amount of 0.0001 to 10% by weight, calculated on the weight of the spent process oil.
- the present invention comprises a process, wherein said additive in addition to components a) and b) further comprises c) at least one agent selected from the group consisting of monoethylene glycol, dipropylene mono- ethylether, glycerol, and propylene glycol.
- the present invention comprises a process, which is carried out at a temperature above 10 °C and preferably at ambient temperature.
- the present invention comprises use of at least one member selected from the group consisting of alkanoic acids, and alkenoic acids having from 6 to 18 carbon atoms in the preparation of a mixture for the purification of spent process oil.
- the present invention comprises use of at least one alkanolamine in the preparation of a mixture for the purification of spent process oil.
- the present invention comprises use of a liquid mixture of a) at least one alkanolamine, and b) at least one member selected from the group consisting of alkanoic acids, and alkenoic acids having from 6 to 18 carbon atoms and the melting point/points such that the mix- ture of a) and b) is liquid at the temperature at which the process is carried out, for the purification of spent process oil.
- the present invention comprises a use where the spent process oil is selected from the group consisting of mineral oil, rolling oil, honing oil, drawing oil, engine lubricating oil.
- the present invention comprises a use where the temperature is above 10 °C and preferably ambient temperature.
- a separation additive is mixed with the target fluid under vigorous stirring.
- the separation additive is not soluble in the target fluid because of its polar properties and thus colloids consisting of small droplets of separation additive are formed under the stirring, which through the chemical interactions (hydrophilic, hydrophobic, and charge interactions) may absorb the unwanted solid or the dissolved impurities in the target fluid.
- the separation additive has a higher density than most mineral oils (except chloroparaffinic oils and certain other derivatised oils) the separation additive will at a gravity separation form a lower phase together with the solid or dissolved impurities and in the cases were the separation additive has a lower density than the target fluid, it will form a lighter phase.
- the mixture to be added to the oil to be purified is called the separation additive.
- a fatty acid with added alkanolamine is preferably used as a separation additive.
- the separation additive may be in liquid form at room temperature. Fatty acids of animal as well as vegetable origin are suitable candidates.
- the fatty acid is at least one selected from the group consisting of alkanoic acids and alkenoic acids having a melting point so that the mixture is liquid at the temperature at which the process is carried out.
- the temperature at which the process is carried out is generally above 10 °C and preferably at ambient temperature.
- the process temperature is preferably below the boiling point of the separation additive and the oil to be purified and any other component of the mixture.
- the separation additive is liquid at room temperature.
- Suitable fatty acids are at least one selected from the group consisting of lauric acid, oleic acid, pentadecanoic acid, decenoic acid, 2-ethylhexanoic acid, and caprylic acid.
- Preferred fatty acids are 2-ethylhexanoic acid and caprylic acid, with the latter one being particularly preferred.
- the pH value of the liquid mixture is in the range of 5 to 8, preferably 6 to 7, with 6.3 as a particularly preferred value.
- the inventor means all pH value within this range such as 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, and 7.0.
- At least one alkanolamine selected from the group consisting of mono-, di-, and trietha- nolamine is used.
- Monoethanolamine and triethanolamine are preferred.
- Triethanolamine is particularly preferred.
- the properties of the mixture of at least one fatty acid and at least one alkanolamine should be such that the mixture is substantially insoluble in the oil to be purified.
- the mixture to be added to the process oil may further comprise at least one substance selected from the group consist- ing of monoethylene glycol, dipropylene glycol monoethyl ether, propylene glycol and glycerol.
- the separation additive comprising the liquid mixture described above is added to the oil to be purified in an amount from 0.0001 to 10% by weight of the oil to be purified.
- the purification mixture is for instance added in an amount of about 3% to about 5% or even up to 10% by weight of the oil to be purified.
- the continuous purification of rolling and honing oil for instance only about 0.0001 to 0.0002% by weight of the oil to be purified is required. For other applications any amounts between these extremes are used.
- the separation additive is separated from the oil to be puri- fied with one method or a combination of methods selected from the group consisting of static settling, centrifugal separation, vacuum filtration, press filtration, pre-coat filtration and centrifugal filtration.
- Example 1 Puri ication of solid and dissolved impurities in rolling oils.
- Table 2 Particle reduction over time by means of turbidity measurement of a rolling oil subjected to purification according to the invention.
- Honing oil (Castrol Honilo 971) which has been used in the manufacturing of connecting rods was purified in a bypass process according to the process described above.
- a solid wall separator was connected (MAB 204, Alfa Laval) equipped as a purifier.
- a liquid wall of separation additive was supplied after which the system was by pass purified with a flow of 180 - 240 litres per hour.
- IVAKI dosing pump
- the dosing rate was approximately 300 ml/h.
- the separation additive was based on caprylic acid with added triethanolamine with a resulting pH value of 6.3. 70% by weight of the caprylic acid with triethanolamine was mixed with 30% by weight of ethylene glycol to bring down the viscosity of the product prior to dosing.
- the particle concentration in the oil was measured by means of turbidity (HACH) .
- Example 3 Purification of lubricating oil .
- the amount of impurities insoluble in n-pentan decreased by 77% when subjecting the oil to extraction and separation utilizing the separation additive according to the invention.
- IR-spectra of untreated oil, treated oil and new oil were identical in the wavelength interval 6500 - 3577 cm -1 .
- the wavelength interval 3577 - 3070 cm -1 a small difference in the spectra can be observed between untreated and treated oil. This difference is most likely caused by the presence of water in the untreated oil. In the rest of the wavelength interval no major differences in spectra could be noticed.
- Table 5 Rest amount of impurities insoluble in n-pentan in untreated oil and oil treated according to the invention.
- Example 4 Purification of chloropara inic oil .
- Chloroparaffinic oil (Castrol 5051) from a steel industry was purified in laboratory scale. The oil which had been in use for about one year was heavily contaminated with carbon par- tides, lime fillers, and lubricating fats (approximately 20% impurities by weight) . Initially the viscosity was measured for the unpurified oil with a Brookfield viscosimeter. 5% by weight of the separation additive was added to 1 kg of the contaminated oil. The product used was caprylic acid with added monoethanolamine with a resulting pH of 6.3. The mixture was allowed to stand in a warm hood in a separation funnel at 40°C during 18 hours after which the heavy phase (the chloroparaffinic oil phase) was separated.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05744662A EP1773971A1 (en) | 2004-05-17 | 2005-05-16 | Process for the purification of spent process oil |
US11/596,736 US20070241030A1 (en) | 2004-05-17 | 2005-05-16 | Process for the Purification of Spent Process Oil |
JP2007527108A JP2007538134A (en) | 2004-05-17 | 2005-05-16 | Purification method of used process oil |
BRPI0510791-1A BRPI0510791A (en) | 2004-05-17 | 2005-05-16 | method for purification of process waste oils |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0401291-0 | 2004-05-17 | ||
SE0401291A SE0401291D0 (en) | 2004-05-17 | 2004-05-17 | Process for the purification of spent process oil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005111181A1 true WO2005111181A1 (en) | 2005-11-24 |
Family
ID=32501929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2005/000701 WO2005111181A1 (en) | 2004-05-17 | 2005-05-16 | Process for the purification of spent process oil |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070241030A1 (en) |
EP (1) | EP1773971A1 (en) |
JP (1) | JP2007538134A (en) |
KR (1) | KR20070015581A (en) |
CN (1) | CN1973022A (en) |
BR (1) | BRPI0510791A (en) |
SE (1) | SE0401291D0 (en) |
WO (1) | WO2005111181A1 (en) |
ZA (1) | ZA200609310B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100144508A1 (en) * | 2007-05-10 | 2010-06-10 | Alfa Laval Corporate Ab | Method and device for cleaning of a fluid in a centrifugal separator |
CN102585989A (en) * | 2011-12-28 | 2012-07-18 | 重庆渝能滤油机制造有限公司 | Waste oil regeneration system |
WO2014102492A1 (en) * | 2012-12-27 | 2014-07-03 | Total Raffinage Chimie | Fuel composition comprising a heavy fuel oil, and product created from the biomass |
EP3339405A1 (en) | 2016-12-20 | 2018-06-27 | Alfa Laval Corporate AB | Separation of contaminants from a liquid mixture |
US10995279B2 (en) | 2017-04-28 | 2021-05-04 | Recondoil Sweden Ab | Purification of oil |
US11247147B2 (en) | 2017-04-28 | 2022-02-15 | Recondoil Sweden Ab | Purification of oil |
US11458420B2 (en) | 2017-04-28 | 2022-10-04 | Recondoil Sweden Ab | Purification of oil |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103937530B (en) * | 2013-01-21 | 2016-08-03 | 中国石油化工股份有限公司 | A kind of weight oil treatment process |
US20150265955A1 (en) * | 2014-03-19 | 2015-09-24 | Krishna Kanchi | System and method for recycling used oil |
CN104450147A (en) * | 2014-11-05 | 2015-03-25 | 华文蔚 | Environment-friendly purification method for waste oil of automobile industry |
CN104479736A (en) * | 2014-12-03 | 2015-04-01 | 烟台市牟平区留德润滑油销售有限公司 | Waste lube distillate oil refinement method |
WO2018220640A1 (en) * | 2017-06-02 | 2018-12-06 | Hindustan Petroleum Corporation Limited | A formulation for enhancing lubricity of fuels |
CN107400555A (en) * | 2017-07-21 | 2017-11-28 | 浙江师范大学 | A kind of method using discarded machine oil production cutting oil and releasing agent |
SE543443C2 (en) | 2019-02-08 | 2021-02-16 | Skf Recondoil Ab | Purification of oil |
CN110747050B (en) * | 2019-11-06 | 2022-02-11 | 沈阳理工大学 | Pickling agent for regenerating waste engine oil and pickling treatment method |
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US2435707A (en) | 1941-05-31 | 1948-02-10 | Ulric B Bray | Method of and apparatus for treating oil |
US4094770A (en) * | 1977-06-22 | 1978-06-13 | Chevron Research Company | Process for removing unfilterable solids from an oil |
US5141628A (en) * | 1987-08-19 | 1992-08-25 | Rwe-Entsorgung Aktiengesellschaft | Method of cleaning and regenerating used oils |
WO1995014752A1 (en) * | 1993-11-29 | 1995-06-01 | Kemisk Separering Tumba Aktiebolag | Purification of oil |
WO2002018523A1 (en) * | 2000-08-30 | 2002-03-07 | Haydock Frederick J | A method of reclaiming used motor oil for further use |
WO2004053035A1 (en) * | 2002-12-12 | 2004-06-24 | Alfa Laval Corporate Ab | A method of purifying contaminated oil from particles suspended in the oil in a centnrifugal separator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4432865A (en) * | 1982-01-25 | 1984-02-21 | Norman George R | Process for treating used motor oil and synthetic crude oil |
-
2004
- 2004-05-17 SE SE0401291A patent/SE0401291D0/en unknown
-
2005
- 2005-05-16 WO PCT/SE2005/000701 patent/WO2005111181A1/en active Application Filing
- 2005-05-16 BR BRPI0510791-1A patent/BRPI0510791A/en not_active Application Discontinuation
- 2005-05-16 JP JP2007527108A patent/JP2007538134A/en active Pending
- 2005-05-16 EP EP05744662A patent/EP1773971A1/en not_active Withdrawn
- 2005-05-16 KR KR1020067024035A patent/KR20070015581A/en not_active Application Discontinuation
- 2005-05-16 US US11/596,736 patent/US20070241030A1/en not_active Abandoned
- 2005-05-16 CN CNA2005800160052A patent/CN1973022A/en active Pending
-
2006
- 2006-11-08 ZA ZA200609310A patent/ZA200609310B/en unknown
Patent Citations (7)
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US2435707A (en) | 1941-05-31 | 1948-02-10 | Ulric B Bray | Method of and apparatus for treating oil |
US4094770A (en) * | 1977-06-22 | 1978-06-13 | Chevron Research Company | Process for removing unfilterable solids from an oil |
US5141628A (en) * | 1987-08-19 | 1992-08-25 | Rwe-Entsorgung Aktiengesellschaft | Method of cleaning and regenerating used oils |
WO1995014752A1 (en) * | 1993-11-29 | 1995-06-01 | Kemisk Separering Tumba Aktiebolag | Purification of oil |
US5976357A (en) * | 1993-11-29 | 1999-11-02 | Alfa Laval Separation Ab | Purification of oil |
WO2002018523A1 (en) * | 2000-08-30 | 2002-03-07 | Haydock Frederick J | A method of reclaiming used motor oil for further use |
WO2004053035A1 (en) * | 2002-12-12 | 2004-06-24 | Alfa Laval Corporate Ab | A method of purifying contaminated oil from particles suspended in the oil in a centnrifugal separator |
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US20100144508A1 (en) * | 2007-05-10 | 2010-06-10 | Alfa Laval Corporate Ab | Method and device for cleaning of a fluid in a centrifugal separator |
JP2010526654A (en) * | 2007-05-10 | 2010-08-05 | アルファ ラヴァル コーポレイト アクチボラゲット | Method and apparatus for purifying fluid in a centrifuge |
US8790233B2 (en) * | 2007-05-10 | 2014-07-29 | Alfa Laval Corporate Ab | Method and device for cleaning of a fluid in a centrifugal separator |
CN102585989A (en) * | 2011-12-28 | 2012-07-18 | 重庆渝能滤油机制造有限公司 | Waste oil regeneration system |
WO2014102492A1 (en) * | 2012-12-27 | 2014-07-03 | Total Raffinage Chimie | Fuel composition comprising a heavy fuel oil, and product created from the biomass |
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EP3339405A1 (en) | 2016-12-20 | 2018-06-27 | Alfa Laval Corporate AB | Separation of contaminants from a liquid mixture |
WO2018114289A1 (en) | 2016-12-20 | 2018-06-28 | Alfa Laval Corporate Ab | Separation of contaminants from a liquid mixture |
US10995279B2 (en) | 2017-04-28 | 2021-05-04 | Recondoil Sweden Ab | Purification of oil |
US11247147B2 (en) | 2017-04-28 | 2022-02-15 | Recondoil Sweden Ab | Purification of oil |
US11458420B2 (en) | 2017-04-28 | 2022-10-04 | Recondoil Sweden Ab | Purification of oil |
US11752452B2 (en) | 2017-04-28 | 2023-09-12 | Recondoil Sweden Ab | Purification of oil |
Also Published As
Publication number | Publication date |
---|---|
BRPI0510791A (en) | 2007-11-20 |
CN1973022A (en) | 2007-05-30 |
SE0401291D0 (en) | 2004-05-17 |
KR20070015581A (en) | 2007-02-05 |
JP2007538134A (en) | 2007-12-27 |
US20070241030A1 (en) | 2007-10-18 |
EP1773971A1 (en) | 2007-04-18 |
ZA200609310B (en) | 2008-06-25 |
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