CN101259378B - Vibrating Membrane Microfiltration of Waste Oil - Google Patents

Vibrating Membrane Microfiltration of Waste Oil Download PDF

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Publication number
CN101259378B
CN101259378B CN2008100910603A CN200810091060A CN101259378B CN 101259378 B CN101259378 B CN 101259378B CN 2008100910603 A CN2008100910603 A CN 2008100910603A CN 200810091060 A CN200810091060 A CN 200810091060A CN 101259378 B CN101259378 B CN 101259378B
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oil
waste oil
reclaimed
described method
solvent
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CN101259378A (en
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郑文聪
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Jin Meiji Co Ltd
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Zhengchang Science And Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—Microfiltration
    • 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
    • C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
    • C10M175/0033—Working-up used lubricants to recover useful products ; Cleaning by thermal processes using distillation processes; devices 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
    • C10M175/0058—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
    • C10M175/06—Working-up used lubricants to recover useful products ; Cleaning by ultrafiltration or osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/08—Specific process operations in the concentrate stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/04—Reciprocation, oscillation or vibration

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Fats And Perfumes (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a waste oil treatment method, which is used for treating waste oil containing physical pollutants to obtain regenerated oil with low content of the physical pollutants. A flow of waste oil is directed against the outer surface of a porous microfiltration membrane having a pore size of 0.01 to 1 μm under a driving pressure. The used oil stream is separated into a retentate, which is located outside the filter membrane, and a regenerated oil, which is located inside the filter membrane. The retentate is centrifuged to separate the contaminant-enriched fraction from the waste oil concentrate. The waste oil concentrate is diluted with a solvent to form an oil solution having a viscosity of 50cSt to 90cSt at 40 ℃. Directing a flow of an oil solution against the outer surface of a vibrating microfiltration membrane having a pore size of 0.01 to 1 μm under a driving pressure and extracting a permeate solution from the inside of the membrane, and then evaporating the solvent in the permeate solution to form a regenerated oil and solvent vapor.

Description

The vibration diaphragm micro-filtering of waste oil
Technical field
The present invention relates to the recycle utilization of a kind of waste oil, particularly lubricating oil.This technology utilizes the vibration diaphragm micro-filtering method to remove physical pollutant in the waste oil.
Background technology
Oil is usually used in lubricating, hydraulic pressure, heat transfer, insulator or other purposes, in use can be made it not to be suitable for original purposes by contaminating impurity some physics or chemistry." waste oil " speech is meant semisolid or the product liquid that all these completely or partially are made up of mineral oil or artificial oil.
Consideration economically is to adopt a kind of special recycling method to handle the main motive force of waste oil, and recycling cost is very responsive to the scale of operation usually, so the output of contaminant removal process and throughput are crucial.In addition, the waste oil that can handle certain limit effectively also is very necessary, because the quality of waste oil can have a strong impact on the technical performance of renovation process and produce the ability of high-quality lubricating oil or similar products.
By the abundant primary characteristic of recovering oil, perhaps recycle waste oil by the product (as fuel) of producing a kind of even lower level, can be by a plurality of steps with the contaminant removal in the waste oil.Physical pollutant such as ashes, additive, metal particle, ambient dust etc. can be removed by mechanical phonograph recorder separation, as precipitation, centrifugal and filtration.Along with the continuous development of the structure and the material of film filter, people should be used as number of research projects to this technology in waste oil is recycling.
The recycling method of prior art comprises a microfiltration processing, is that the film of 0.01 μ m～1 μ m is removed most physics impurity with an aperture from waste oil.Waste oil is heated to 50 ℃～90 ℃ behind initial precipitation, by a dynamic membrane filtering system, waste oil flows through a perforated membrane in this system then.These perforated membranes must regularly clean to keep its filter efficiency, normally finish by backwash, and promptly oil stream reverse flow is crossed this perforated membrane, and use cleaning fluid to remove the schmutzband that forms at perforated membrane the filter process from per-meate side.Yet waste oil is concentrated more, independently also just difficult more formation of schmutzband of one deck, thus also be difficult for being removed.Physical removal method expense costliness, and can lose a large amount of products.
It is found that the vibration filtering film helps overcoming above-mentioned shortcoming.Oil is heated reducing its viscosity, and conjunctival motion can form a kind of turbulence state, thereby make pollutant be not easy on filter membrane, to form schmutzband, can also provide satisfied throughput simultaneously.Because unfiltered waste oil is enriched with more pollutant, cause throughput to reduce, in order to overcome the resistance that schmutzband causes, keep satisfied membrane flux, need to increase flowing pressure and promote waste oil, but this way is very disadvantageous, because filter membrane is very crisp by filter membrane, use excessive pressure can cause film to damage, and the quality of infiltration also can descend.
The purpose of this invention is to provide a kind of method that can overcome or improve above-mentioned shortcoming fully, improving one's methods of a kind of waste oil regeneration is provided in other words conj.or perhaps.Further purpose of the present invention provides the method that a kind of vibrating membrane filters improving one's methods of waste oil and a kind of waste oil regeneration, and reclaimed oil can be used, and for example is used to mix different types of lubricant as a kind of base stock.
Summary of the invention
According to an aspect of the present invention, the invention provides waste oil that a kind of processing contains pollutant to regain the method for the low reclaimed oil of pollutant load, this method may further comprise the steps:
A) be the outer surface of the porous microfiltration diaphragm of 0.01 μ m～1 μ m facing to the aperture, one waste oil stream of guiding under driving pressure;
B) vibration porous microfiltration diaphragm is separated into the retentate that is positioned at the porous microfiltration diaphragm outside with waste oil stream, and the reclaimed oil that is positioned at porous microfiltration diaphragm inboard;
C) retentate is carried out centrifugal, so that the component of enrichment pollutant is separated from the waste oil concentrate;
D) with solvent the waste oil concentrate is diluted, the viscosity that forms under a kind of 40 ℃ is the oil solution of 50cSt～90cSt;
E) be the outer surface of the porous microfiltration diaphragm of 0.01 μ m～1 μ m facing to the aperture, one oil solution of guiding flows under driving pressure, and extracts percolating solution from the inboard of porous microfiltration diaphragm; And
F) solvent in the percolating solution is evaporated, forms reclaimed oil and solvent vapo(u)r.
Before step a), earlier waste oil is placed in the sedimentation basin, fragment and Free water can be separated, the free water content in the waste oil stream just is less than 5% volume like this.
Before step a), preferably earlier the waste oil in the sedimentation basin is heated to 60 ℃～120 ℃.
60 ℃～120 ℃ waste oil is placed vacuum environment, wherein water and volatile fraction are evaporated, then before porous microfiltration diaphragm, its free water content is reduced to below 1% volume waste oil in guiding.
This method is applicable to more in the batch mode that wherein, step b) and step e) are used with a slice porous microfiltration diaphragm and carried out.This method also can be used for only using in the continuous mode of a slice porous microfiltration diaphragm, perhaps is used for the classification continuous mode of the step b) porous microfiltration diaphragm different with the step e) use.
In the process of step b), can assess determined desirable extracting mode according to the measured value of reclaimed oil recovery rate and by the waste oil pollution degree, driving pressure is adjusted,, carried out centrifugal retentate when driving pressure reaches maximum and reclaimed oil recovery rate when being lower than minimum of a value.
Preferably, oil solution is placed vacuum environment, make the solvent evaporation.Preferably solvent vapo(u)r is concentrated and reclaims, in step d), reuse.
Preferably, reclaimed oil is done further post processing, to remove one of color and smell by clay-filtered or solvent extraction.
The invention provides a kind of micro-filtration method that can produce the reclaimed oil of fully removing metal impurities economically.The variation of the pollution level of the waste oil of being imported reduces the influence of this method, and filter membrane is difficult for the dirt that formation can not remove.
Description of drawings
Preferable mode of the present invention will describe by the relevant example of accompanying drawing, wherein:
Fig. 1 is the schematic diagram according to the waste oil regeneration system of method design of the present invention.
The specific embodiment
According to Fig. 1, method of the present invention can use illustrated system to carry out in a batch mode.In sedimentation basin 1, waste oil is carried out initial treatment, Free water and chip separation are come out.Waste oil was placed in sedimentation basin 1 8～24 hours, was lower than 5% volume until the content of Free water.
Then the waste oil in the sedimentation basin 1 is transferred in the adiabatic storage pool 2.Pump 3 flows inlet flow with waste oil and crosses heater 4, and heater 4 is heated to 60 ℃～120 ℃ with waste oil.The hot waste oil of this batch flows to flash vessel 5 then, is reduced to below 1% volume by vacuumizing the water content that makes waste oil.
It is the prefilter 7 of 20 μ m～100 μ m that this dehydration waste oil stream is shifted by an aperture by pump 6, and particulate and fragment that will be bigger be removed, and enter vibration diaphragm micro-filtering system 8 then.Vibration diaphragm micro-filtering system 8 comprises an inorganic microporous membrane, as pottery or metal, or organic film.The aperture of this filter membrane should be not less than 0.01 μ m, with the throughput of system of satisfaction guaranted.Yet the size of the trapped particles when 95% is during greater than 0.2 μ m, and the maximum diameter of hole of filter membrane can be depending on the specification of recycling oil.Driving pressure is by valve 9 controls, and valve 9 is positioned at retentate one side of vibration diaphragm micro-filtering system 8.Percolating solution drains into output pool 12 from vibration diaphragm micro-filtering system 8.
Assess determined desirable extracting mode according to the measured value of the reclaimed oil recovery rate in the output pool 12 and by the waste oil pollution degree, the driving pressure in the vibration diaphragm micro-filtering system 8 is adjusted.Minimum working pressure power must be greater than 2bar, to guarantee that filter membrane can the layering owing to oscillatory shear.In a single day system reaches operating pressure, must vibration filters form to prevent dirt.When driving pressure reaches maximum and reclaimed oil recovery rate when being lower than minimum of a value, the viscosity of retentate is about 2 times of viscosity of initial waste oil stream.In sedimentation-type centrifuge 10 retentate is handled then, be about 1,500～3, high viscosity components under the centrifugal action of 500G that ashes content is many are separated from the many concentrates of oil content, then oil concentrate are transferred to storage pool 2.
It is the oil solution of 50cSt～90cSt that concentrate is used the viscosity that is diluted under 40 ℃ from the light naphtha of storage pool 13 injections.This solvent should have good solubility in oil, of light color, can not cause darkening and the boiling point reduction of oil.Then this oil solution is re-injected and carry out in the vibration diaphragm micro-filtering system 8 passing through the second time, the percolating solution of being exported transfers to flash vessel 5, and solvent vapo(u)r is extracted and enters storage pool 13 by condenser 14 in flash vessel 5.After solvent was removed, guiding reclaimed oil entered output pool 12.
Controller 11 is according to the input of flow velocity, and temperature and pressure sensor (not shown) is controlled the running of system.Controller 11 is the temperature of oil stream in the control heater 4 also, the temperature of this oil stream maintain at first flow into temperature range than low value, and in processing procedure, raise gradually.The viscosity of waste oil increases along with the enrichment of pollutant.Oil stream temperature raises, thereby trends towards keeping the viscosity of the waste oil that is positioned at the microporous membrane retentate side, perhaps reduces this waste oil at least because the caused viscosity increase of enrichment pollutant value.Similarly, can adjust, change caused waste oil viscosity variation with the level of offsetting contained pollutant from the waste oil that storage pool 2 flows into to the waste oil temperature.The overall recovery of this law is between 50%～80% (percent by volume).
Following example is a further non-limitative illustration of the present invention.
Embodiment 1:
In batch process, the used oil that does not contain Free water and fragment is heated to 85 ℃, be transferred to then in the vibrating membrane filtration system, this system contains the porous polymer diaphragm that a normal pore size is 0.05 μ m.Waste oil stream is conducted through this diaphragm, and this diaphragm is 0.06 radian or 16mm at an amplitude, and frequency is sustained vibration in the torsional mode of 50Hz.When filtering first, driving pressure maintains 2.4bar at first, drops to 250 liters/hour until the film flow, and at this moment, driving pressure increases to maximum 5bar gradually, to keep the film flow.When the recovery rate of reclaimed oil drops to below 100 liters/hour, carry out centrifugal to retentate.Retentate under 1500G centrifugal 20 minutes is shifted out concentrate then from the retentate transfer, the percentage by weight of this concentrate and retentate is 90%.Before filtering for the second time, under 40 ℃, be 75cSt with kerosene dilution concentrate to viscosity, again kerosene is reclaimed after the filtration.
The detected characteristic of table 1 waste oil and reclaimed oil relatively
Pollutant Used oil Reclaimed oil Percentage changes
Fe(ppm) 86 7 92％
Cr(ppm) 2 0 100％
Ni(ppm) 0 0 0
Al(ppm) 8 0 100％
Pb(ppm) 12 10 17％
Cu(ppm) 39 27 31％
Sn(ppm) 0 0 0
Ag(ppm) 0.3 0.2 33％
Ti(ppm) 0 0 0
Si(ppm) 15 7 53％
B(ppm) 29 2 93％
Na(ppm) 70 1 99％
K(ppm) ＜10 ＜10 NA
Mo(ppm) 5 ＜5 NA
P(ppm) 845 334 60％
Zn(ppm) 846 267 68％
Ca(ppm) 2614 84 97％
Ba(ppm) ＜10 ＜10 NA
Mg 43 3 93％
Sb(ppm) ＜30 ＜30 NA
V(ppm) 0 0 0
Fuel (%) ＜1.0 ＜1.0 NA
Pollutant Used oil Reclaimed oil Percentage changes
LEM carbon black (%) 0.61 ＜0.01 ＞98％
Water (%) 0.50 ＜0.1 ＞80％
Total acid number 1.29 0.22 83％
Ashes (%wt) 0.837 0.159 81％
Viscosity under 40 ℃ (cSt) 79.8 41.5 48％
Viscosity under 100 ℃ (cSt) 10.6 7.0 34％
In the preferable specific embodiment of the present invention, by clay-filtered or solvent extraction reclaimed oil is further processed, to remove one of color and smell.
Embodiment 2:
In experimentation, the 500ml reclaimed oil of producing according to the method for example 1 carries out post processing by the method for oxidation precipitation with solvent extraction.Reclaimed oil mixes in 3: 1 ratio with N-N-methyl-2-2-pyrrolidone N-(NMP), be heated to then 125 ℃ 30 minutes.After oil contacted, solvent was separated from mixture, and this is because nmp solvent is different with oily density and both do not dissolve each other usually.Mixture is transferred in the separatory funnel placed 12 hours.After the separation, raffinate and initial reclaimed oil are analyzed and compared, to check the effect of pollutant removal.After solvent extraction was handled, the color of reclaimed oil dropped to 3.0 by ASTMD15008.0.
The comparison of the pollutant levels of initial reclaimed oil of table 2 and the reclaimed oil after nmp solvent extracts
Pollutant Reclaimed oil (ppm) After nmp solvent extracts (ppm) Remove percentage
Fe (iron) 10 2 80％
Cr (chromium) 0 0 NA
Ni (nickel) 0 0 NA
Al (aluminium) 0 0 NA
Pb (lead) 11 0 100％
Cu (copper) 25 0 100％
Sn (tin) 0 0 NA
Pollutant Reclaimed oil (ppm) After nmp solvent extracts (ppm) Remove percentage
Ag (silver) 0 0 NA
Ti (titanium) 0 0 NA
Si (silicon) 8 7 13％
B (boron) 2 0 100％
Na (sodium) 0 0 NA
K (potassium) ＜10 ＜10 NA
Mo (molybdenum) ＜5 ＜5 NA
P (phosphorus) 277 53 81％
Zn (zinc) 224 95 58％
Ca (calcium) 84 ＜10 ＞88％
Ba (barium) ＜10 ＜10 NA
Mg (magnesium) 4 0 100％
Sb (antimony) ＜30 ＜30 NA
V (vanadium) 0 0 NA
Sulphur (%) 0.857 0.512 40％
Fuel (%) ＜1.0 ＜1.0 NA
LEM carbon black (%) ＜0.01 ＜0.01 NA
Water (%) ＜0.1 ＜0.1 NA
Embodiment 3:
In experimentation, the 500ml reclaimed oil of producing according to the method for example 1 carries out post processing by clay-filtered.The carclazyte adsorbent of reclaimed oil and 12% (percentage by weight) mixes, be heated to then 100 ℃ 120 minutes.The carclazyte that will give up filters out, and the reclaimed oil sample of resulting bright and clean is carried out metal content analysis.
The metal concentration of initial reclaimed oil of table 3 and the reclaimed oil after the carclazyte polishing relatively
Metal Reclaimed oil (ppm) After Virgin Purocel clay (light) DY 2.5-3 polishing (ppm) Remove percentage
Fe 5 2 60％
Cr 0 0 0
Ni 0 0 0
Al 0 0 0
Pb 15 4 73％
Cu 26 2 92％
Sn 0 0 0
Ag 0 0 0
Ti 0 0 0
Si 12 10 17％
B 3 0 100％
Na 0 0 0
K ＜10 ＜10 NA
Mo ＜5 ＜5 NA
P 248 46 81％
Zn 223 19 91％
Ca 58 12 79％
Ba ＜10 ＜10 NA
Metal Reclaimed oil (ppm) After Virgin Purocel clay (light) DY 2.5-3 polishing (ppm) Remove percentage
Mg 5 1 80％
Sb ＜30 ＜30 NA
V 0 0 0
Various aspects of the present invention only describe via embodiment, should be noted that the modification that the present invention is done and must not replenish and depart from its scope.

Claims (13)

  1. A processing contain pollutant waste oil to regain the method for the low reclaimed oil of pollutant levels, this method may further comprise the steps:
    A) be the outer surface of the porous microfiltration diaphragm of 0.01 μ m～1 μ m facing to the aperture, one waste oil stream of guiding under driving pressure;
    B) vibration porous microfiltration diaphragm is separated into the retentate that is positioned at the porous microfiltration diaphragm outside with waste oil stream, and the reclaimed oil that is positioned at porous microfiltration diaphragm inboard;
    C) retentate is carried out centrifugal, so that the component of enrichment pollutant is separated from the waste oil concentrate;
    D) with solvent the waste oil concentrate is diluted, the viscosity that forms under a kind of 40 ℃ is the oil solution of 50cSt～90cSt;
    E) be the outer surface of the porous microfiltration diaphragm of 0.01 μ m～1 μ m facing to the aperture, one oil solution of guiding flows under driving pressure, and extracts percolating solution from the inboard of porous microfiltration diaphragm; And
    F) solvent in the percolating solution is evaporated, forms reclaimed oil and solvent vapo(u)r.
  2. 2. by the described method of claim 1, before step a), earlier waste oil is placed in the sedimentation basin, fragment and Free water can be separated, the free water content in the waste oil stream is less than 5% volume like this.
  3. 3. by the described method of claim 2, before step a), earlier the waste oil in the sedimentation basin is heated to 60 ℃～120 ℃.
  4. 4. by the described method of claim 3, before step a), 60 ℃～120 ℃ waste oil are placed vacuum environment, wherein water and volatile fraction are evaporated, before porous microfiltration diaphragm, its free water content is reduced to below 1% volume waste oil in guiding.
  5. 5. by one of them described method of claim 1 to 4, in batch mode, step b) and step e) are used with a slice porous microfiltration diaphragm and are carried out.
  6. 6. by one of them described method of claim 1 to 4, oil solution is placed vacuum environment, evaporating solvent.
  7. 7. by the described method of claim 6, solvent vapo(u)r is concentrated and reclaims, in step d), reuse.
  8. 8. by one of them described method of claim 1 to 4, by solvent extraction reclaimed oil is done further post processing, to remove one of color and smell.
  9. 9. by the described method of claim 8, may further comprise the steps: the N-N-methyl-2-2-pyrrolidone N-is mixed in the ratio of 1: 3～1: 5 (volume ratio) with reclaimed oil; With mixture be heated to 100 ℃～150 ℃ 30 minutes, regain reclaimed oil.
  10. 10. by the described method of claim 8, by clay-filtered reclaimed oil is done further post processing, to remove one of color and smell.
  11. 11. it is, further comprising the steps of: the carclazyte adsorbent that adds 15%～20% (percentage by weight) in the reclaimed oil by the described method of claim 10; Make mixing carclazyte and reclaimed oil reaction 30～120 minutes, remove by filter carclazyte then, regain reclaimed oil.
  12. 12., by clay-filtered reclaimed oil is done further post processing, to remove one of color and smell by one of them described method of claim 1 to 4.
  13. 13. it is, further comprising the steps of: the carclazyte adsorbent that adds 15%～20% (percentage by weight) in the reclaimed oil by the described method of claim 12; Make mixing carclazyte and reclaimed oil reaction 30～120 minutes, remove by filter carclazyte then, regain reclaimed oil.
CN2008100910603A 2007-08-24 2008-04-13 Vibrating Membrane Microfiltration of Waste Oil Active CN101259378B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HK07109258.1 2007-08-24
HK07109258A HK1113636A2 (en) 2007-08-24 2007-08-24 Vibrating membrance micro-filtration of used oil

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CN101259378A CN101259378A (en) 2008-09-10
CN101259378B true CN101259378B (en) 2010-06-16

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CN (1) CN101259378B (en)
AU (1) AU2008100772A4 (en)
FR (1) FR2920100B3 (en)
HK (1) HK1113636A2 (en)
ZA (1) ZA200807265B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2837330A1 (en) * 2011-05-26 2012-11-29 Unity Fuels Llc Method and system for processing used cooking oil
CN102580380A (en) * 2012-03-15 2012-07-18 豆远奎 Method for filtering dirty oil by vibrating
CN103285734B (en) * 2013-06-25 2015-07-15 深圳市森科妍科技有限公司 A treatment process and a system for waste organic solvents based on nano filter membranes
CN103801148A (en) * 2013-11-01 2014-05-21 昆山威胜达环保设备有限公司 Novel vacuum centrifugal-separation oil purifier
CN103611364B (en) * 2013-11-15 2015-09-02 昆山威胜达环保设备有限公司 A kind of novel vibrating oil filter
CN104450149B (en) * 2014-12-17 2017-09-29 国网上海市电力公司 A kind of method that particulate matter is extracted in transformer oil
CN105664586A (en) * 2016-03-09 2016-06-15 东莞安默琳机械制造技术有限公司 Waste engine oil recycling purification system
DK179546B1 (en) * 2016-12-28 2019-02-12 Ocean Team Group A/S A power plant with a lubrication oil cleaning system and a method of operating the power plant
CN111727232A (en) * 2017-11-10 2020-09-29 斯蒂珀能源有限公司 Recovery system for high pressure processing system
EP4139424A1 (en) * 2020-04-20 2023-03-01 ExxonMobil Technology and Engineering Company Membrane separation of used oil and compositions generated
CN114177655B (en) * 2021-12-23 2023-03-10 安徽国孚凤凰科技有限公司 Fiber separation type saturated oil separation recovery device and method for base oil solvent extraction extract liquid
CN116179261A (en) * 2022-12-28 2023-05-30 内蒙古第一机械集团股份有限公司 Recycling method of waste lubricating oil

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AU2008100772A4 (en) 2008-09-18
FR2920100A3 (en) 2009-02-27
HK1113636A2 (en) 2008-10-10
FR2920100B3 (en) 2009-07-10
CN101259378A (en) 2008-09-10
ZA200807265B (en) 2009-11-25

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