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WO1991000329A1 - Procede de traitement d'huiles usees - Google Patents

Procede de traitement d'huiles usees Download PDF

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Publication number
WO1991000329A1
WO1991000329A1 PCT/EP1990/000978 EP9000978W WO9100329A1 WO 1991000329 A1 WO1991000329 A1 WO 1991000329A1 EP 9000978 W EP9000978 W EP 9000978W WO 9100329 A1 WO9100329 A1 WO 9100329A1
Authority
WO
WIPO (PCT)
Prior art keywords
carried out
ammonium
acid
oil
aqueous solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1990/000978
Other languages
German (de)
English (en)
Inventor
Fritz Basler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geut AG Gesellschaft fur Energie- und Umwelttechnik
GEUT ENERGIE- und UMWELTTECHNIK AG
Original Assignee
Geut AG Gesellschaft fur Energie- und Umwelttechnik
GEUT ENERGIE- und UMWELTTECHNIK AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geut AG Gesellschaft fur Energie- und Umwelttechnik, GEUT ENERGIE- und UMWELTTECHNIK AG filed Critical Geut AG Gesellschaft fur Energie- und Umwelttechnik
Publication of WO1991000329A1 publication Critical patent/WO1991000329A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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

Definitions

  • the present invention relates to a method for processing, in particular for demetallizing and deblocking, waste oil, in particular used engine oils and bilge oils from diesel engines.
  • waste oils for use, so-called recycling, is both economically and ecologically necessary.
  • processed waste oils regenerated oils
  • the use of processed waste oils (regenerated oils) as fuels and fuels is bound to legal regulations with regard to their content of foreign substances, because the latter are released in combustion in unchanged or modified form and can therefore contaminate the air in an inadmissible manner with pollutants. Similar requirements are placed on regenerate oils if they are used as base oils for the renewed production of lubricating oils.
  • the foreign substances include inorganic and organic compounds of metals, sulfur, phosphorus and Halogens, especially chlorine.
  • waste oils which are obtained with an average of approx. 7,000 to 10,000 mg and more metal compounds per kg, are only insufficiently freed from the metals in such processes if they are not subjected to vacuum distillation in a final phase.
  • the carbon remains in the oil, which results in a low-quality oil, or it can contaminate the equipment excessively, so that an undisturbed process flow is not guaranteed.
  • US Pat. No. 3,930,988 discloses a method for reducing the ash content in used lubricating oils, in which the lubricating oil with an aqueous solution of ammonium sulfate and / or ammonium bisulfate for reaction with the metal-containing components of the oil and for the formation of metal-containing solids is brought into contact, the reaction mass is separated into an oil phase and an aqueous phase which contains the solids, and the oil phase is obtained as an oil product with a low ash content.
  • US Pat. No. 3,879,282 discloses a method for reducing the ash content in used motor oils, in which the motor oil is brought into contact with an aqueous solution of ammonium phosphate in order to react with the metal salts contained in the oil. is allowed to sit and the oil is separated from the water and the precipitate.
  • US Pat. No. 4,151,072 discloses a process for obtaining pure lubricating oil from used lubricating oil, in which the oil with an aqueous solution of an ammonium salt selected from ammonium sulfate, ammonium bisulfate, ammonium phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate and mixtures thereof, in sufficient quantities Amount is brought into contact at a temperature of 60 to 120 ° C, the major part of the water and the light hydrocarbons is removed from the mixture obtained at a temperature of 110 to 140 ° C, the oil phase is separated off by filtration, which filtered oil is heated to a temperature of 200 to 480 "C and brought into contact with an adsorbent, the oil thus obtained is stripped at a temperature of 280 to 395" C and then recovered.
  • an ammonium salt selected from ammonium sulfate, ammonium bisulfate, ammonium phosphate, diammonium hydrogen phosphate, ammonium
  • the object of the present invention is to provide a method for working up, in particular for demetallization and
  • the process according to the invention enables waste oil to be processed using small amounts of non-toxic or non-hazardous chemicals without applying pressure at relatively low temperatures.
  • demetallization and stripping there is also a sharp reduction in the phosphorus and halogen content of the waste oil.
  • only small amounts of waste occur in the process according to the invention, and there is little oil loss.
  • An oil worked up by the process according to the invention is suitable as a preliminary stage for re-refining since no disruptive dyes are formed.
  • Stage a) of the method according to the invention is preferably carried out in a stripping device. Temperatures of up to 150 ° C., in particular from 20 to 150 ° C., particularly preferably from 100 to 140 ° C., are generally used. The treatment time is preferably 1 to 2 hours.
  • the waste oil is mixed with an effective amount of an aqueous mixture of at least two strong acids and / or at least two salts of two weak bases and two strong ones Acids or precursors thereof treated.
  • the amounts of solution used depend on the foreign substances present in the waste oil and are generally not above the equivalent amount of foreign substances, in particular the metal compounds. The smallest possible amount of solution is preferred for economic reasons. In general, amounts below 5% by weight aqueous solution, based on the waste oil, are sufficient. Amounts below 1.0% by weight are particularly preferably used.
  • Various acids can be used to treat the waste oil in stage a).
  • An aqueous solution of sulfurous acid, amidosulfuric acid, sulfonic acid, phosphorous acid, hypophosphorous acid, phosphonic acid, hydrochloric acid, hydrofluoric acid or mixtures thereof is preferably used.
  • Sulfuric acid, sulfonic acid, .phosphorous acid and phosphonic acid are particularly preferred.
  • the weak base and strong acid salt is preferably an ammonium salt of a strong acid.
  • Ammonium salts are particularly suitable for ammonium sulfite, ammonium disulfite, ammonium amido sulfate, ammonium sulfonate, ammonium phosphite, ammonium phosphonic acid, ammonium chloride, ammonium fluoride or mixtures thereof.
  • Ammonium sulfite, ammonium sulfonate, ammonium phosphite and ammonium phosphonate are particularly preferred.
  • Mono- and di-ammonium phosphite can be used as the ammonium phosphite.
  • step a) a salt of guanidine, an amide, such as carbamide or hydrazine, or else an alkyl or aryl compound of the above acids, or combinations thereof, can also be used.
  • Stage b) of the method according to the invention is preferably a curation stage.
  • the dissolved and undissolved metal compounds agglomerate with the soot larger particles.
  • the curation temperature is preferably 150 to 300 ° C and the treatment time 0.5 to 24 hours, particularly preferably 2 to 12 hours.
  • the curation can be carried out in such a way that the oil is heated in stages using special heat exchangers, for the most part remaining in the respective circuit. In this stage, the metal compounds are precipitated and various organic acids are reduced to carbon.
  • the product obtained is separated from the solids. Since it is easy to sediment, it can, for example, be decanted, about 95% of the solids being separated off. Depending on the viscosity, the oil can then be reheated somewhat, for example to a temperature of 60 to 150 ° C., and then filtered, for example pressed through a filter press. The remaining solids are removed. The mixture can also be pressed directly through a filter press.
  • the mixture obtained in stage a) can be kept at elevated temperature before the curation and, for example, by adding an additive for better removal of the oil in stage c), preferably at a temperature of 140 to 200 ° C. and above 1 to 2 Hours to be treated.
  • the additives used are preferably sodium, potassium or calcium hydroxide, sodium, potassium or calcium alcoholate, a sodium, potassium or calcium salt from an organic acid, such as sodium ethylate or sodium stearate, urea, hydrazine, guanidine and a carbazide or a salt of this compound is used.
  • a holding level shortens the subsequent curation period.
  • any customary pretreatment can be carried out.
  • a pre-dewatering such as by centrifuging, decanting or distilling, can be carried out with a proportion of more than 5% of foreign substances.
  • the oil prepared by the method according to the invention is particularly suitable for use as heating oil and bunker oil or as a base oil for the renewed production of lubricating oils.
  • a mixture of 2.5 g of diammonium sulfite and 1.5 g of guanidine glycerophosphonate in 10 g of water was added to 250 g of a waste oil mixture of used motor oils (diesel and petrol engines) containing 0.84% ash and 3% water at 100 ° C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Lubricants (AREA)

Abstract

Un procédé de traitement, notamment de démétallisation et de décalaminage d'huiles usées, comporte trois étapes successives. Pendant l'étape (a), les huiles usées sont traités avec une quantité efficace d'une solution aqueuse d'un mélange d'au moins deux acides forts et/ou d'au moins deux sels d'une base faible et d'un acide fort ou de leurs précurseurs, à une température pouvant s'élever jusqu'à 150°C. Pendant l'étape (b), le produit ainsi obtenu est déshydraté et durci à des températures élevées, et pendant l'étape (c), l'huile contenue dans le produit ainsi obtenu est séparée des matières solides.
PCT/EP1990/000978 1989-06-26 1990-06-20 Procede de traitement d'huiles usees Ceased WO1991000329A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893920869 DE3920869A1 (de) 1989-06-26 1989-06-26 Verfahren zur aufbereitung von altoel
DEP3920869.9 1989-06-26

Publications (1)

Publication Number Publication Date
WO1991000329A1 true WO1991000329A1 (fr) 1991-01-10

Family

ID=6383591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/000978 Ceased WO1991000329A1 (fr) 1989-06-26 1990-06-20 Procede de traitement d'huiles usees

Country Status (3)

Country Link
AU (1) AU5857190A (fr)
DE (1) DE3920869A1 (fr)
WO (1) WO1991000329A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2245901C1 (ru) * 2003-12-03 2005-02-10 Власкин Александр Терентьевич Способ очистки отработанных минеральных масел
CN108865398B (zh) * 2018-08-01 2021-04-06 宁波中循环保科技有限公司 一种废润滑油预处理方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339520A (en) * 1940-06-27 1944-01-18 Aluminum Co Of America Reclaiming lubricants
US3417012A (en) * 1966-11-14 1968-12-17 Morace Mario Method of regenerating used lubricating oil
US4151072A (en) * 1977-05-16 1979-04-24 Phillips Petroleum Company Reclaiming used lubricating oils
EP0028409A1 (fr) * 1979-11-01 1981-05-13 Phillips Petroleum Company Elimination des cendres d'huiles lubrifiantes
US4411774A (en) * 1981-01-16 1983-10-25 Turbo Resources Ltd. Process for removing contaminants from waste lubricating oil by chemical treatment
US4522729A (en) * 1984-07-30 1985-06-11 Phillips Petroleum Company Filtration of oil
WO1990007566A1 (fr) * 1989-01-04 1990-07-12 Geut Ag Gesellschaft Für Energie Und Umwelttechnik Procede de traitement d'huiles usees

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339520A (en) * 1940-06-27 1944-01-18 Aluminum Co Of America Reclaiming lubricants
US3417012A (en) * 1966-11-14 1968-12-17 Morace Mario Method of regenerating used lubricating oil
US4151072A (en) * 1977-05-16 1979-04-24 Phillips Petroleum Company Reclaiming used lubricating oils
EP0028409A1 (fr) * 1979-11-01 1981-05-13 Phillips Petroleum Company Elimination des cendres d'huiles lubrifiantes
US4411774A (en) * 1981-01-16 1983-10-25 Turbo Resources Ltd. Process for removing contaminants from waste lubricating oil by chemical treatment
US4522729A (en) * 1984-07-30 1985-06-11 Phillips Petroleum Company Filtration of oil
WO1990007566A1 (fr) * 1989-01-04 1990-07-12 Geut Ag Gesellschaft Für Energie Und Umwelttechnik Procede de traitement d'huiles usees

Also Published As

Publication number Publication date
DE3920869A1 (de) 1991-01-03
AU5857190A (en) 1991-01-17

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