WO2004007644A1 - Procedimiento para regenerar aceites usados por extracción con disolventes - Google Patents
Procedimiento para regenerar aceites usados por extracción con disolventes Download PDFInfo
- Publication number
- WO2004007644A1 WO2004007644A1 PCT/ES2002/000354 ES0200354W WO2004007644A1 WO 2004007644 A1 WO2004007644 A1 WO 2004007644A1 ES 0200354 W ES0200354 W ES 0200354W WO 2004007644 A1 WO2004007644 A1 WO 2004007644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- column
- temperatures
- distillation
- vacuum
- oil
- Prior art date
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Classifications
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- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/16—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural parallel stages only
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- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
- C10G53/04—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only including at least one extraction step
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- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
- C10G53/12—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only including at least one alkaline treatment step
-
- 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
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
- C10G2300/1007—Used oils
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- 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
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/44—Solvents
-
- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/10—Lubricating oil
Definitions
- the invention relates, in general, to the regeneration of used oils; industrial operation that consists of recovering the base oils separating them from the rest of the products and contaminants, so that they can be used again as lubricant bases. More specifically, the invention relates to a process for regenerating used oils of petroleum origin by extraction with aliphatic solvents, characterized in that the process comprises, once the solvent has been removed from the extract, different separation steps.
- lubricant bases Refined oils of petroleum origin, which are used to make lubricants and other industrial oils, are called lubricant bases.
- Lubricants and other industrial oils are manufactured by mixing the lubricant bases with additives, some of them containing metals (Ca, Zn, etc 7), which give them the qualities required by the service to be provided (resistance to oxidation, at shear, and at temperature, emulsifying and antifoaming qualities, little variation in viscosity with temperature, etc.).
- oils Discarded oils, after their service in engines or other machines, are called used oils. They contain lubricant bases and additives and their degradation products, (lighter oil fractions such as naphtha and gas-oil, and heavier as asphalts and coke); they also contain contaminants acquired during their collection in workshops and oil stations, such as water solvents and glycols.
- the separation of asphalts, additives and degradation products is usually carried out by distilling the base oils under vacuum. This process involves heating the used oil to more than 300 ° C, so cracking reactions occur that make the heat exchange and distillation equipment dirty and produce corrosion.
- WO 9407798 uses a treatment of used oil with a strong base before the separation of asphalt and additives, performing said separation by distillation under moderate vacuum (20-30 mbar) and high temperatures (350 ° C) in which the additive molecules are broken.
- patent WO 9471761 Sotulub, Tunisia, 1994, although it carries out a series of treatments with strong bases at 150-250 ° C before the separation of asphalt and additives, carries out said separation by vaporization in a thin layer regime at very moderate temperatures (310 ° C) and high vacuum (1 mbar).
- patent DE 343336 (Buss AG, 1985) subjects the oil before the separation of asphalts and additives, by distillation, to a treatment with alkaline hydroxides at 230-260 ° C in a closed reactor, while the US patent 4834868 (FJ Lappin, 1989), performs the treatment with alkali hydroxide in the filling of the separation column of asphalts and additives.
- the caustic treatment at 200-300 ° C, combined with an oxidation, is carried out after the separation of asphalts and additives in WO 9826031 (Sotulub, Tunisia, 1994), requiring a final distillation of the lubricating bases after refining caustic.
- propane removes, by solution, preferably naphtha, diesel, and lubricant bases; and rejects, as insoluble, asphalts and water in which most of the additives, degradation products and all water and glycols are retained.
- the extracted lubricant bases are subjected to atmospheric distillation to separate the light products, and to vacuum distillation to separate gas-oil and lubricant bases. These bases still require a gentle refining treatment by land or hydrogenation to achieve the typical quality of the first refining bases.
- the present invention aims to improve atmospheric distillation (phase 2) and vacuum distillation
- phase 3 of the oil used after propane extraction, so that the process can run continuously, without frequent stops for cleaning and without suffering corrosion in the equipment.
- the process of the invention achieves these objectives without the use of expensive investment or maintenance equipment or techniques such as catalytic hydrogenation or thin-layer distillation at high vacuum.
- flash and vacuum distillation is carried out at a moderate temperature, using a liquid recirculation to the feed in vacuum distillation.
- the present invention provides a process for regenerating used oils of petroleum origin by extraction with aliphatic solvents, characterized in that the process comprises, after removing the solvent from the extract, the following treatments:
- step b) Continuous distillation, in fractionation column, of the background liquid obtained in step a), under vacuum and moderate temperatures; in the presence of a basic compound or a reducing agent or a mixture of both; with recirculation of bottom of the column to the feeding of the same; separating by side extractions the vacuum diesel or spindel oil and the lubricating bases and in the background a fuel oil or asphalt component.
- fractional vacuum distillation is carried out, in the process of the invention, under vacuum and moderate temperatures, using low load loss fillings, which allows the temperature to which the bases in the distillation are subjected to be less than 350 ° C
- These conditions represent a notable advantage over desasphalting by distillation with temperatures of 350 ° C that produce fouling in the heat exchangers and cracking in the lubricating bases, affecting their properties and making refining necessary by hydrogenation.
- the sudden vaporization of stage a) can be carried out at temperatures between 150 ° C and 260 ° C, preferably 220 ° C, and at atmospheric or near atmospheric pressure.
- the deasphalting extract, or feed is preferably heated to temperatures between 150 ° C and 250 ° C in a heat exchanger by means of a heating agent or thermal fluid at temperatures between 250 ° C and 320 ° C.
- a liquid-vapor separation is then carried out, with or without reflux of the light fractions at the head of the separator.
- the liquid separated in the sudden vaporization of step a) is recirculated to the feed, the ratio of the recirculation current to the feed stream comprised between 0.5 and 5, expressed by weight.
- the continuous distillation of step b) can be carried out at temperatures between 310 ° and 335 ° C, and at a pressure between 2 and 8 mbar.
- the vacuum is preferably produced by a mechanical pump whose gases and vapors are incinerated in an oven with the help of liquid or gaseous fuels.
- the heating of the feed to the vacuum distillation column is preferably carried out in a tube and shell heat exchanger, the heating agent being a thermal oil at temperatures between 350 ° C and 390 ° C.
- the pressure of the process of the invention is higher than that typical of thin film vaporization processes (1 millibar), which significantly reduces the size and complexity of the equipment.
- the reduced pressure level used in vacuum distillation (around 2 to 8 mbar) is achieved with vacuum pumps, a system that is preferred to that of steam ejectors, to avoid the production of significant volumes of contaminated condensed water and Unpleasant smell that complicates pollution prevention devices.
- the exhaust gases from the vacuum pump are taken to a gas or liquid fuel furnace where they are burned to eliminate traces of products that produce odor.
- the fouling of the tubes of the heat exchangers of distillation at atmospheric pressure and at reduced pressure is favored, if the wall of said tubes reaches high temperatures.
- direct heating of the tubes with combustion gases in ovens is avoided.
- Heating is preferably carried out in heat exchangers with an intermediate thermal fluid, which in the case of atmospheric distillation is circulated outside the tubes at about 250-320 ° C and in distillation under reduced pressure at about 350-390 ° C.
- the recirculation of the liquid from atmospheric distillation or the recirculation of the liquid from the bottom of the distillation under reduced pressure produce two beneficial effects on the heat exchanger tubes: a) Increase the linear speed and turbulent speed in them avoiding hot spots on the walls of the tubes and depositions on the surface of the tubes.
- distillation conditions of the process of the invention and particularly those of vacuum distillation, make it possible to avoid fouling and cracking reactions as well as the use of excessively large equipment, as with previous technologies.
- the basic agent generally introduced as an alkaline hydroxide in concentrated aqueous solution, loses water in atmospheric distillation, becoming an anhydrous product with greater activity. Water removal avoids having to use high pressure equipment, equivalent to the water vapor pressure at 200 - 300 ° C.
- the bottom product of the vacuum distillation column of phase b) is cooled, preferably at temperatures between 80 and 160 ° C, and extracted with water at a pressure greater than the vapor tension of water, corresponding to the temperature used, to dissolve and recover the basic compound and to reduce the content thereof in the bottom product of the column
- the continuous distillation in a fractionation column of step b ) is performed in two or more containers in series. It has been proven that the joint and simultaneous application of these foundations, in the manner illustrated in the description and in the examples, results in results that cannot be obtained by the individual action of each of them.
- This mixture is separated in the container (2) obtaining the vapors D of light hydrocarbons and solvents and water, which condense in liquid form in the refrigerant (3) and separate in (4) in a hydrocarbon phase R, in the water that F is collected by bottom and in non-condensable gases S that leave by head.
- a part of R can be used as a reflux in (2) to prevent heavy fractions from being dragged out of (2).
- a part C of the bottom of the separator (2) is recirculated and mixed with A to decrease the percentage of vaporization by (1) and increase the linear velocity through the tubes of (1), which allows the fouling of the tubes to be controlled by deposition of heavy fractions and contaminants.
- the weight ratio of C to A is generally between 1 and 5.
- the remainder G of the bottom of the separator, mixed with the recirculation of bottom H of the fractional distillation is heated in the heat exchanger (5) at moderate temperatures, preferably between 315 and 335 ° C.
- the vapor-liquid mixture I is introduced into the flash evaporation zone of the column (6). It works at reduced pressure (usually between 2 and 10 mbar at the head) and is designed with low-load filler beds so that the bottom pressure is generally between 10 and 20 mbar, which allows reaching the indicated temperatures formerly in the area of sudden evaporation.
- the fractionation column can be designed so that two to five lateral extractions are obtained.
- Figure 1 shows a design of three extractions corresponding to the productions of a vacuum gas-oil or a spindelk oil base K, a light base oil L and a heavy base oil M, which are sent to the storage tanks respective.
- the bottom product of the fractionation column (6) is divided into two streams.
- the N stream is the production of fuel oil that can also be used as an additive and asphalt fluidizer and sent to storage; and the current H that is used as a recirculation of the feed G to the fractional distillation column, in order to control the fouling of the exchanger tubes (5) by decreasing the percentage of vaporization and increasing the linear velocity through the tubes.
- the reducing additive can be added alone or in admixture with the basic additive at various points in the installation indicated as B, S and T.
- the greatest efficiency is achieved by adding the basic additive in B and the hydrogenator in the heavy oil reflux T or in the sudden vaporization zone S.
- the basic agent which runs the installation through the changer (1), the separator (2), the changer (5) and the bottom of the tower (6) leaving in mixture with the oil N, can be extracted with water and recirculated to B.
- the bottom current N of the column (6) is cooled in the exchanger (7), adding water Q by means of a mixer (8).
- the aqueous phase of the alkaline hydroxide P is separated from the organic phase of the fuel oil in the separator (9).
- the aqueous and asphalt phase is pumped to an evaporator, obtaining 45 kg / h of water with a high COD content per head that is sent to purification, and at the bottom, 65 kg / h of an asphalt product that encompasses the Additives and other contaminants.
- the extract obtained in the desasfaltado with solvents, is pumped at a rate of 890 kgs / h to an atmospheric distillation column, obtaining 15 kgs / h of light fraction of the gasoline distillation range per head and 875 kgs / h of a product that still contains 15 kgs / h of light fraction.
- the bottom kettle of this column heated with thermal oil at 375 ° C, to maintain 300 ° C at the bottom of it, requires frequent cleaning.
- the background product obtained in the atmospheric distillation column, is pumped at a flow rate of 875 liters / hour through a tubular beam heated with natural gas combustion fumes to achieve a temperature of 345 oC and is introduced into a fractional distillation column, at the top of which the pressure is 20 mbar.
- the tubular feeding beam of the vacuum distillation column requires cleaning every 7-15 days and the column filling must be cleaned every six weeks.
- Example No. 2 (method according to the invention):
- 1,000 g of the same used oil described in example 1 are extracted with propane, as indicated in said example, obtaining, after separation of the propane 890 kg / h of extract that is pumped together with 900 kg / h of the liquid of recirculation through a heat exchanger heated with thermal fluid at 275 ° C, up to a temperature of 225 ° C.
- the resulting mixture is conducted to a vapor-liquid separator at atmospheric pressure. You get 30 kg per head. of light fractions of the distillation range of gasoline and kerosene. In the background, 1760 kg / h are obtained, which barely contain light fractions, of which 900 kg / h are recirculated to the feed.
- the bottom product of the atmospheric vaporization 860 kgs / h, is mixed with 3500 kgs / h of the bottom of the vacuum column and heated in a shell and tube heat exchanger with thermal oil at 370 ° C up to a temperature of 325 ° C, introducing it later in the column of vacuum of filling with low loss of load.
- the pressure in its upper part is 5 mbar and in the lower part 12 mbar.
- the vacuum column feed changer is kept in service for a long time without cleaning.
- the example shows that the design and operation of the distillation of the extracted product according to the conditions of the improved process, significantly increases the operability and improves the properties of the base oils, although the typical quality of the first refining oils is not yet reached .
- Example 2 4.0 g of KOH / kg of extract are introduced into the feed to atmospheric vaporization and 0.2 gr. of hydrazine / kg of extract in the reflux of heavy oil from the distillation column, obtaining bases of the following characteristics:
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
Claims
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN02829424.6A CN1267534C (zh) | 2002-07-15 | 2002-07-15 | 通过溶剂萃取再生废油的方法 |
BRPI0215816-7A BR0215816B1 (pt) | 2002-07-15 | 2002-07-15 | processo para a refinação de óleos de petróleo usados por extração com solventes alifáticos. |
PT02751178T PT1559768E (pt) | 2002-07-15 | 2002-07-15 | Metodo de regeneracao de oleos usados atraves de extraccao com solventes |
AU2002368067A AU2002368067A1 (en) | 2002-07-15 | 2002-07-15 | Method of regenerating used oils by means of extraction with solvents |
EP02751178A EP1559768B1 (en) | 2002-07-15 | 2002-07-15 | Method of regenerating used oils by means of extraction with solvents |
MXPA05000637A MXPA05000637A (es) | 2002-07-15 | 2002-07-15 | Procedimiento para regenerar aceites usados por extraccion con disolventes. |
AT02751178T ATE324421T1 (de) | 2002-07-15 | 2002-07-15 | Verfahren zur regeneration von altölen mittels lösungsmittelextraktion |
PCT/ES2002/000354 WO2004007644A1 (es) | 2002-07-15 | 2002-07-15 | Procedimiento para regenerar aceites usados por extracción con disolventes |
ES02751178T ES2263798T3 (es) | 2002-07-15 | 2002-07-15 | Procedimiento de regeneracion de aceites usados por extraccion con disolventes. |
RU2005103839/04A RU2288946C2 (ru) | 2002-07-15 | 2002-07-15 | Способ очистки отработанных масел экстракцией растворителями |
CA2492563A CA2492563C (en) | 2002-07-15 | 2002-07-15 | Process for rerefining used oils by solvent extraction |
DE60211041T DE60211041T2 (de) | 2002-07-15 | 2002-07-15 | VERFAHREN ZUR REGENERATION VON ALTÖLEN MITTELS LöSUNGSMITTELEXTRAKTION |
US10/270,410 US7226533B2 (en) | 2002-07-15 | 2002-10-10 | Process for re-refining used oils by solvent extraction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2002/000354 WO2004007644A1 (es) | 2002-07-15 | 2002-07-15 | Procedimiento para regenerar aceites usados por extracción con disolventes |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/270,410 Continuation US7226533B2 (en) | 2002-07-15 | 2002-10-10 | Process for re-refining used oils by solvent extraction |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004007644A1 true WO2004007644A1 (es) | 2004-01-22 |
Family
ID=30011346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2002/000354 WO2004007644A1 (es) | 2002-07-15 | 2002-07-15 | Procedimiento para regenerar aceites usados por extracción con disolventes |
Country Status (13)
Country | Link |
---|---|
US (1) | US7226533B2 (es) |
EP (1) | EP1559768B1 (es) |
CN (1) | CN1267534C (es) |
AT (1) | ATE324421T1 (es) |
AU (1) | AU2002368067A1 (es) |
BR (1) | BR0215816B1 (es) |
CA (1) | CA2492563C (es) |
DE (1) | DE60211041T2 (es) |
ES (1) | ES2263798T3 (es) |
MX (1) | MXPA05000637A (es) |
PT (1) | PT1559768E (es) |
RU (1) | RU2288946C2 (es) |
WO (1) | WO2004007644A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7431829B2 (en) | 2003-09-23 | 2008-10-07 | Sener Grupo De Ingenieria, S.A. | Method for regenerating used oils by demetallization and distillation |
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US8088275B2 (en) * | 2006-11-16 | 2012-01-03 | Gibson Energy Ulc | Reconditioning process for used hydrocarbon based stimulation fluid |
DE102006057910A1 (de) * | 2006-12-08 | 2008-07-03 | Exad Gmbh | Verfahren zum Aufbereiten von Altölen und/oder Öl/Wassergemischen oder ähnlichen flüssigen Gemischen |
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US8088276B2 (en) * | 2008-08-08 | 2012-01-03 | CleanOil Limited | Oil re-refining system and method |
AT509429B1 (de) * | 2010-01-20 | 2016-09-15 | Erema | Verfahren zur herstellung eines mit längeren fasern gefüllten polymeren materials |
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FR3130826A1 (fr) * | 2021-12-21 | 2023-06-23 | Totalenergies Marketing Services | Méthode de purification d’huiles lubrifiantes au moins en partie re-raffinées |
CN114225452A (zh) * | 2021-12-23 | 2022-03-25 | 安徽国孚生态工程技术有限公司 | 一种废润滑油四段蒸发回收方法 |
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- 2002-07-15 WO PCT/ES2002/000354 patent/WO2004007644A1/es not_active Application Discontinuation
- 2002-07-15 AU AU2002368067A patent/AU2002368067A1/en not_active Abandoned
- 2002-07-15 CA CA2492563A patent/CA2492563C/en not_active Expired - Fee Related
- 2002-07-15 PT PT02751178T patent/PT1559768E/pt unknown
- 2002-07-15 MX MXPA05000637A patent/MXPA05000637A/es active IP Right Grant
- 2002-07-15 BR BRPI0215816-7A patent/BR0215816B1/pt not_active IP Right Cessation
- 2002-07-15 EP EP02751178A patent/EP1559768B1/en not_active Expired - Lifetime
- 2002-07-15 RU RU2005103839/04A patent/RU2288946C2/ru not_active IP Right Cessation
- 2002-07-15 CN CN02829424.6A patent/CN1267534C/zh not_active Expired - Fee Related
- 2002-07-15 ES ES02751178T patent/ES2263798T3/es not_active Expired - Lifetime
- 2002-07-15 DE DE60211041T patent/DE60211041T2/de not_active Expired - Lifetime
- 2002-07-15 AT AT02751178T patent/ATE324421T1/de active
- 2002-10-10 US US10/270,410 patent/US7226533B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP1559768B1 (en) | 2006-04-26 |
AU2002368067A1 (en) | 2004-02-02 |
CN1267534C (zh) | 2006-08-02 |
MXPA05000637A (es) | 2005-03-31 |
BR0215816A (pt) | 2005-06-07 |
CN1649984A (zh) | 2005-08-03 |
CA2492563A1 (en) | 2004-01-22 |
DE60211041D1 (de) | 2006-06-01 |
US7226533B2 (en) | 2007-06-05 |
RU2005103839A (ru) | 2006-01-10 |
RU2288946C2 (ru) | 2006-12-10 |
ES2263798T3 (es) | 2006-12-16 |
ATE324421T1 (de) | 2006-05-15 |
CA2492563C (en) | 2010-07-13 |
EP1559768A1 (en) | 2005-08-03 |
US20040007499A1 (en) | 2004-01-15 |
DE60211041T2 (de) | 2006-12-07 |
BR0215816B1 (pt) | 2012-11-27 |
PT1559768E (pt) | 2006-09-29 |
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