EP1561797A1 - Procédé d'amélioration d'huile - Google Patents

Procédé d'amélioration d'huile Download PDF

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Publication number
EP1561797A1
EP1561797A1 EP04250667A EP04250667A EP1561797A1 EP 1561797 A1 EP1561797 A1 EP 1561797A1 EP 04250667 A EP04250667 A EP 04250667A EP 04250667 A EP04250667 A EP 04250667A EP 1561797 A1 EP1561797 A1 EP 1561797A1
Authority
EP
European Patent Office
Prior art keywords
oil
water
acidic material
added
phase
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.)
Withdrawn
Application number
EP04250667A
Other languages
German (de)
English (en)
Inventor
David Paul OSS Group Limited Ramsden
Daniel Peter OSS Group Limited Brady
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.)
Oss Group Ltd
Original Assignee
Oss Group Ltd
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 Oss Group Ltd filed Critical Oss Group Ltd
Priority to EP04250667A priority Critical patent/EP1561797A1/fr
Publication of EP1561797A1 publication Critical patent/EP1561797A1/fr
Withdrawn legal-status Critical Current

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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
    • C10M175/005—Working-up used lubricants to recover useful products ; Cleaning using extraction processes; apparatus therefor
    • 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
    • C10G17/00—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge
    • C10G17/02—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge with acids or acid-containing liquids, e.g. acid sludge
    • 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
    • C10G31/08—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by treating with water
    • 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
    • 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

Definitions

  • the present invention relates to a process and apparatus for the treatment of oils.
  • the invention was developed in response to a need to purify waste oils to make them suitable for further use. Accordingly it has a particular relevance thereto, and will be more particularly described in that context. However, the treatment of other oils is not excluded from the compass of the invention.
  • waste oils contain impurities and/or degradation products.
  • Common impurities include particulate contamination, water, and original or degraded additives many of which contain metal atoms. Not only do these affect the combustion properties of the waste oil, but it is highly undesirable from the environmental point of view that oils with such levels of contamination should be burned. Accordingly, it is necessary to treat the waste oil to remove (or reduce) contaminants prior to their use as a fuel.
  • waste oils can itself produce environmentally undesirable contamination, for example in the form of vapours of volatile organic compounds or VOCs, and in the form of metal containing by-products which are difficult to treat further (see below). Accordingly, any acceptable waste oil treatment must be arranged with these factors in mind.
  • Water is commonly removed by treatment of the oils with a demulsifying agent (emulsion breaker), followed by separation as in a centrifuge for example.
  • emulsion breaker demulsifying agent
  • the present invention provides a method of oil treatment comprising the steps of treating the oil with water followed by treating the oil with an acidic material.
  • the water is added in a manner such as to form a dispersion, and more preferably an emulsion, for example by injecting it ahead of a mixing device or pump such as a centrifugal pump.
  • the water is added at a rate of at least 5% m/m (mass/mass), more preferably at least 10% and most preferably at least 13% m/m. Preferably it is added at a rate of no more than 20% m/m and more preferably no more than 17% m/m.
  • the acidic material is subsequently injected so as to be dispersed in the oil, for example just ahead of a second mixing device or pump such as a second centrifugal pump.
  • a preferred acidic material is inhibited concentrated sulphuric acid, e.g. 98% sulphuric acid.
  • the acidic material is added at a rate of 500-10,000 ppm (parts per million m/m), more preferably 1,000 to 8,000 ppm and most preferably 2,000 to 7,000 ppm.
  • the method according to the invention substantially avoids tar formation, or at least leads to a highly significant reduction in tar formation, thus providing a cleaner and more efficient oil treatment process.
  • the mixture is preferably left for some time preferably at least 20 minutes, more preferably at least 40 minutes, and most preferably at least one hour, for reaction to occur, and preferably the mixture is stored in a holding tank for this period.
  • a pipeline receiving the oil/water/acid mixture may be dimensioned according to the flow rate to permit the requisite residence time therein.
  • a de-emulsifying and/or de-ashing chemical may be added, and the resulting phases separated, one of the separated phases being a purified oil phase.
  • the latter may be further purified by being subjected to flash evaporation to provide a purified oil product in which relatively volatile VOCs and any remaining water are further reduced, but in many circumstances this is not expected to be necessary.
  • the purified oil phase is treated with alkali, e.g. a caustic solution, to neutralise any residual acidity, which otherwise may prove unacceptably aggressive towards metal (for example during subsequent storage).
  • alkali e.g. a caustic solution
  • treatment of the separated aqueous phase with alkali such as a caustic solution is preferred to ensure that effluent from the process is not acidic.
  • the oil is pretreated by heating and/or by phase separation before the water is added.
  • Heating can serve to promote phase separation e.g. of an aqueous phase.
  • the invention extends to apparatus arranged to perform the method.
  • waste oil from a reservoir tank is initially passed through a heat exchanger 1 where it is warmed by heat exchange with the product 2 (exchanger 1 is shown at both ends of the process), and then subject to further heat input 3 if necessary.
  • the heating process has the effect of de-watering the oil to a considerable extent, and accordingly the oil is then passed through a decanting centrifuge, where the separated oil and also some semi-solid waste products are removed as a stream 5.
  • the treated oil 6 from centrifuge 4 is then filtered in an filter 7 to remove the bulk of the remaining solid or semi-solid contaminants.
  • the filter 7 is enclosed to retain any VOC vapours.
  • the centrifuge 4 would conventionally be enclosed so that vapour release is no problem there.
  • the oil feed 8 output from filter 7 is then injected with water at a point 10 in a pipeline just prior to a first centrifugal pump (not shown), so that the water produces an emulsion 11.
  • a first centrifugal pump not shown
  • 98% sulphuric acid 13 is injected just ahead of a second centrifugal pump (not shown), and the mixture of materials is then allowed to stand in a first reaction vessel 14 for about one hour to allow reactions to proceed (alternatively in a continuous process a sufficiently large pipeline is used in lieu of vessel 14 to provide a residence time between its ends of about an hour).
  • reaction product 15 in a pipeline from vessel 14 is then treated by injection with a de-ashing and de-emulsifying chemical 16 and then stored in a second reaction vessel 17 for around one hour to enable de-emulsification and other processes to proceed.
  • the material 18 leaving the vessel 17 comprises a treated oil phase together with an aqueous phase and semisolid waste material. It is passed into a three-phase high speed centrifuge 19, which separates the aqueous phase 20 for purification and recycling to the water injection point 11, the semisolid waste 21 for disposal, and the treated oil phase 22.
  • the treated oil phase 22 is amply clean enough for use as a fuel oil. Nevertheless, it may contain some residual acidity, and in a preferred arrangement the phase 22 is treated (not shown) with a caustic solution to neutralise this acidity. Furthermore, whether or not there is any preceding caustic treatment, the fuel oil phase 22 will commonly still contain some water and some relatively volatile VOCs, and at least in some circumstances this is undesirable. Therefore, as shown, as an optional additional stage, the treated oil phase 22 is passed into a flash vessel 25 where water and other relatively volatile materials 23 are removed for disposal, the purified treated oil phase 24 being passed through the heat exchanger 2 on its way to storage.
  • the aqueous phase or at least that part being fed out as effluent, is also treated with caustic solution.

Landscapes

  • 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)
  • Combustion & Propulsion (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
EP04250667A 2004-02-07 2004-02-07 Procédé d'amélioration d'huile Withdrawn EP1561797A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04250667A EP1561797A1 (fr) 2004-02-07 2004-02-07 Procédé d'amélioration d'huile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04250667A EP1561797A1 (fr) 2004-02-07 2004-02-07 Procédé d'amélioration d'huile

Publications (1)

Publication Number Publication Date
EP1561797A1 true EP1561797A1 (fr) 2005-08-10

Family

ID=34673737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04250667A Withdrawn EP1561797A1 (fr) 2004-02-07 2004-02-07 Procédé d'amélioration d'huile

Country Status (1)

Country Link
EP (1) EP1561797A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104698092A (zh) * 2015-03-18 2015-06-10 中国石油大学(华东) 一种净油累积转化率的评价方法
WO2017024959A1 (fr) * 2015-08-10 2017-02-16 Shirhao Limited Appareils et procédés de recyclage de substances fluidiques
WO2020162816A1 (fr) * 2019-02-08 2020-08-13 Skf Recondoil Ab Procédé et système pour l'utilisation circulaire d'une huile industrielle
US11958004B2 (en) 2019-02-08 2024-04-16 Skf Recondoil Ab Method and system for purification of contaminated oil
US12377367B2 (en) 2020-05-18 2025-08-05 Skf Recondoil Ab Solvent extraction system and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB193029A (en) * 1922-02-07 1924-01-10 Apolline Rialland Process for purifying mineral oils
US1686491A (en) * 1927-01-19 1928-10-02 Standard Oil Dev Co Preparation of fuel oil
US2434528A (en) * 1945-06-04 1948-01-13 Standard Oil Dev Co Method for removing ash-forming constituents and sediment from alkaline petroleum residuum
US2520407A (en) * 1948-11-27 1950-08-29 Sun Oil Co Removal of inorganic matter from petroleum residua
US4491515A (en) * 1981-03-23 1985-01-01 Monash University Treating used automotive lubricating oil to reduce the content of suspended particulate matter, including lead
WO1993013190A1 (fr) * 1992-01-03 1993-07-08 S & D Oil Technics B.V. Procede d'extraction de polluants a partir d'huile usee
GB2393448A (en) * 2002-09-28 2004-03-31 Oss Group Ltd Treatment of oil to reduce/prevent tar formation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB193029A (en) * 1922-02-07 1924-01-10 Apolline Rialland Process for purifying mineral oils
US1686491A (en) * 1927-01-19 1928-10-02 Standard Oil Dev Co Preparation of fuel oil
US2434528A (en) * 1945-06-04 1948-01-13 Standard Oil Dev Co Method for removing ash-forming constituents and sediment from alkaline petroleum residuum
US2520407A (en) * 1948-11-27 1950-08-29 Sun Oil Co Removal of inorganic matter from petroleum residua
US4491515A (en) * 1981-03-23 1985-01-01 Monash University Treating used automotive lubricating oil to reduce the content of suspended particulate matter, including lead
WO1993013190A1 (fr) * 1992-01-03 1993-07-08 S & D Oil Technics B.V. Procede d'extraction de polluants a partir d'huile usee
GB2393448A (en) * 2002-09-28 2004-03-31 Oss Group Ltd Treatment of oil to reduce/prevent tar formation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104698092A (zh) * 2015-03-18 2015-06-10 中国石油大学(华东) 一种净油累积转化率的评价方法
WO2017024959A1 (fr) * 2015-08-10 2017-02-16 Shirhao Limited Appareils et procédés de recyclage de substances fluidiques
CN106422489A (zh) * 2015-08-10 2017-02-22 顺豪有限公司 回收流体物质的装置与方法
WO2020162816A1 (fr) * 2019-02-08 2020-08-13 Skf Recondoil Ab Procédé et système pour l'utilisation circulaire d'une huile industrielle
CN113438966A (zh) * 2019-02-08 2021-09-24 斯凯孚废油转化公司 用于工业油的循环使用的方法及系统
US11958004B2 (en) 2019-02-08 2024-04-16 Skf Recondoil Ab Method and system for purification of contaminated oil
US12097453B2 (en) 2019-02-08 2024-09-24 Skf Recondoil Ab Method and system for circular use of industrial oil
AU2020217543B2 (en) * 2019-02-08 2025-02-27 Skf Recondoil Ab A method and system for circular use of industrial oil
US12370477B2 (en) 2019-02-08 2025-07-29 Skf Recondoil Ab Liquid composition for purification of oil
US12377367B2 (en) 2020-05-18 2025-08-05 Skf Recondoil Ab Solvent extraction system and method

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