CN104059770A - Waste lubricating oil regeneration process - Google Patents
Waste lubricating oil regeneration process Download PDFInfo
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- CN104059770A CN104059770A CN201410277314.6A CN201410277314A CN104059770A CN 104059770 A CN104059770 A CN 104059770A CN 201410277314 A CN201410277314 A CN 201410277314A CN 104059770 A CN104059770 A CN 104059770A
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- lubricating oil
- waste lubricating
- regeneration
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- filtration
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Abstract
The invention relates to a waste lubricating oil regeneration process. The process is characterized by comprising the following steps in sequence: filtration with a wire mesh, sedimentation, plate-and-frame filtration, flocculation, rectification, molecular distillation and membrane filtration. Compared with the prior art, the waste lubricating oil regeneration process has the advantages of small investment scale, low operating cost, good regenerated base oil product quality and high regenerated base oil recovery rate.
Description
Technical field
The present invention relates to petroleum chemical industry field, particularly relate to a kind of process for regeneration of waste lubricating oil.
Background technology
At petrochemical industry, the develop rapidly of economic technology both at home and abroad, is also enhanced for the performance requriements of lube product at any time; And in the harmonic process of lubricating oil, often need to add one or more additives to improve the specified property of lubricating oil, and the object being then in harmonious proportion or in order to improve kind and the quality of lubricating oil, thus the final required lubricating oil of client obtained.
At present, in process for regeneration of waste lubricating oil, all need to add a large amount of carclazytes and hydrofining both at home and abroad; Can produce " secondary pollution " materials such as acid sludge, sulfurous gas, contaminate environment, deals with trouble; Cause cost of investment high, and the oil production bearing is again low.
The Chinese invention patent " a kind of method for regenerating waste lubricating oil " that for example application number is 201310207519.2, discloses a kind of method for regenerating waste lubricating oil, mainly comprises the following steps: waste lubricating oil is put into slurry tank and carry out simple separation; Get upper strata oil mixture, add Mixer pot, heating flocculation; Mixture after flocculation is proceeded to air distillation column distillation, distill through flashing tower, decompression evaporator, then enter rectifying tower and carry out rectifying; By rectifying lubricating oil clay treatment out, filter, obtain base oil.But the deficiency of this patent is, need to add a large amount of carclazytes and hydrofining; Can produce " secondary pollution " materials such as acid sludge, sulfurous gas, contaminate environment, deals with trouble; Cause cost of investment high, and the oil production bearing is again low.
Summary of the invention
The object of the invention is to overcome the problems referred to above that prior art exists, propose a kind of process for regeneration of waste lubricating oil.The present invention is applied in process for regeneration of waste lubricating oil, compared with prior art has that scale of investment is little, running cost is low, the good product quality of Reclaimed Base Oil, and the Reclaimed Base Oil rate of recovery is high.
The present invention realizes by the following technical solutions:
Process for regeneration of waste lubricating oil, is characterized in that comprising the following steps successively: wire cloth filtration, sedimentation, Plate Filtration, flocculation, rectifying, molecular distillation and membrane filtration;
Described wire cloth is filtered into and adopts 150 object wire cloths to filter for the first time waste lubricating oil, removes the great machinery impurity in waste lubricating oil;
Described sedimentation is the waste lubricating oil that removes great machinery impurity to be put into slurry tank carry out sedimentation, and the settling time is 18-20 hour, and settling temperature is 80-90 DEG C;
Described Plate Filtration is that the waste lubricating oil upper strata oil mixture of getting sedimentation is put into flame filter press and filtered for the second time, obtains treatment solution;
Described flocculation is that in heat-processed, treatment solution adds organic floculant after rising to 80 DEG C, and stirs by treatment solution heating, and finally controlling temperature is 150 DEG C, and be 30-40 minute heat-up time, and whole heat-processed passes into nitrogen as shielding gas;
Described rectifying be by the treatment solution after flocculation carry out successively degassed, dry after, proceed to and in rectifying tower, carry out rectifying;
Described molecular distillation is that the lubricating oil that rectifying is gone out carries out multiple-grade molecular distillation again;
Described membrane filtration be after the lubricating oil after molecular distillation is heated through tubular fibre membrane filtration, obtain base oil by cooling.
In described flocculation step, organic floculant add-on is to process the 5%-10% of liquid measure, 80 DEG C-150 DEG C of the temperature of reaction of organic floculant, the 30 minutes reaction times of organic floculant, 200 revs/min of stirring velocitys.
Described organic floculant is Poly Dimethyl Diallyl Ammonium Chloride, oxyethane, propylene, thanomin and ethylenediamine copolymer.
Described molecular distillation is at least three grades, and the temperature control of the first step is 130 DEG C-150 DEG C, and the temperature control of residue progression is 100 DEG C-120 DEG C.
Described flame filter press is physical filtering, and flame filter press filters out a certain size large granular impurity and the suspended substance in waste lubricating oil.
The material of described hollow-fibre membrane is tetrafluoroethylene, and aperture is 0.01-0.5 μ m, and the external diameter of hollow-fibre membrane is 0.5-2.0mm, and the internal diameter of hollow-fibre membrane is 0.3-1.4mm; Express with the molecular weight that can hold back material in aperture, and molecular weight cut-off can reach several thousand to hundreds of thousands of, and Reclaimed Base Oil rate is high.
Compared with prior art, its advantage is in the present invention:
1, the present invention is applied in process for regeneration of waste lubricating oil, compared with prior art has that scale of investment is little, running cost is low, the good product quality of Reclaimed Base Oil, Reclaimed Base Oil rate of recovery > 90%.
2, the present invention is applied in process for regeneration of waste lubricating oil and also has the advantages such as the rate of recovery is high, nothing " secondary pollution ", save energy, environmental protection simultaneously, and regeneration efficiency is high, safety.
3, the present invention adopt wire cloth be filtered into adopt 150 object wire cloths waste lubricating oil is filtered for the first time, remove the great machinery impurity in waste lubricating oil; Described flame filter press is physical filtering, and flame filter press filters out a certain size large granular impurity and the suspended substance in waste lubricating oil; Adopt twice filtration the impurity in waste lubricating oil effectively can be removed, ensure the quality of rerefined oil base oil.
4, the present invention adopts described flocculation for treatment solution is heated, and in heat-processed, treatment solution adds organic floculant after rising to 80 DEG C, and stir, final control temperature is 150 DEG C, and be 30-40 minute heat-up time, and whole heat-processed passes into nitrogen as shielding gas; Organic floculant add-on is to process the 5%-10% of liquid measure, 80 DEG C-150 DEG C of the temperature of reaction of organic floculant, the 30 minutes reaction times of organic floculant, 200 revs/min of stirring velocitys; Under this composite regenerated condition, the waste oil after manipulation of regeneration has reached the standard of this rank fresh oil substantially, and the Reclaimed Base Oil rate of recovery can arrive 94.55%.
5, to adopt the material of described hollow-fibre membrane be tetrafluoroethylene in the present invention, and aperture is 0.01-0.5 μ m, and the external diameter of hollow-fibre membrane is 0.5-2.0mm, and the internal diameter of hollow-fibre membrane is 0.3-1.4mm; Express with the molecular weight that can hold back material in aperture, and molecular weight cut-off can reach several thousand to hundreds of thousands of, and Reclaimed Base Oil rate is high.
Embodiment
Below the present invention is further detailed:
Embodiment 1:
Process for regeneration of waste lubricating oil, is characterized in that comprising the following steps successively: wire cloth filtration, sedimentation, Plate Filtration, flocculation, rectifying, molecular distillation and membrane filtration;
Described wire cloth is filtered into and adopts 150 object wire cloths to filter for the first time waste lubricating oil, removes the great machinery impurity in waste lubricating oil;
Described sedimentation is the waste lubricating oil that removes great machinery impurity to be put into slurry tank carry out sedimentation, and the settling time is 18 hours, and settling temperature is 80 DEG C;
Described Plate Filtration is that the waste lubricating oil upper strata oil mixture of getting sedimentation is put into flame filter press and filtered for the second time, obtains treatment solution;
Described flocculation is that in heat-processed, treatment solution adds organic floculant after rising to 80 DEG C, and stirs by treatment solution heating, and finally controlling temperature is 150 DEG C, and be 30 minutes heat-up time, and whole heat-processed passes into nitrogen as shielding gas;
Described rectifying be by the treatment solution after flocculation carry out successively degassed, dry after, proceed to and in rectifying tower, carry out rectifying;
Described molecular distillation is that the lubricating oil that rectifying is gone out carries out multiple-grade molecular distillation again;
Described membrane filtration be after the lubricating oil after molecular distillation is heated through tubular fibre membrane filtration, obtain base oil by cooling.
In the present invention, in described flocculation step, organic floculant add-on is to process 5% of liquid measure, 80 DEG C of the temperature of reaction of organic floculant, the 30 minutes reaction times of organic floculant, 200 revs/min of stirring velocitys.
In the present invention, described organic floculant is Poly Dimethyl Diallyl Ammonium Chloride, oxyethane, propylene, thanomin and ethylenediamine copolymer.
In the present invention, described molecular distillation is at least three grades, and the temperature control of the first step is 130 DEG C, and the temperature control of residue progression is 100 DEG C.
In the present invention, in described PP strainer, the aperture of micropore filtering film is 1 micron.
In the present invention, described flame filter press is physical filtering, and flame filter press filters out a certain size large granular impurity and the suspended substance in waste lubricating oil.
In the present invention, the material of described hollow-fibre membrane is tetrafluoroethylene, and aperture is 0.01 μ m, and the external diameter of hollow-fibre membrane is 0.5mm, and the internal diameter of hollow-fibre membrane is 0.3mm; In use, the Reclaimed Base Oil rate of recovery is 90.26% in the present invention, and the scope of base oil is 100SN.
Embodiment 2:
Process for regeneration of waste lubricating oil, is characterized in that comprising the following steps successively: wire cloth filtration, sedimentation, Plate Filtration, flocculation, rectifying, molecular distillation and membrane filtration;
Described wire cloth is filtered into and adopts 150 object wire cloths to filter for the first time waste lubricating oil, removes the great machinery impurity in waste lubricating oil;
Described sedimentation is the waste lubricating oil that removes great machinery impurity to be put into slurry tank carry out sedimentation, and the settling time is 19 hours, and settling temperature is 85 DEG C;
Described Plate Filtration is that the waste lubricating oil upper strata oil mixture of getting sedimentation is put into flame filter press and filtered for the second time, obtains treatment solution;
Described flocculation is that in heat-processed, treatment solution adds organic floculant after rising to 80 DEG C, and stirs by treatment solution heating, and finally controlling temperature is 150 DEG C, and be 35 minutes heat-up time, and whole heat-processed passes into nitrogen as shielding gas;
Described rectifying be by the treatment solution after flocculation carry out successively degassed, dry after, proceed to and in rectifying tower, carry out rectifying;
Described molecular distillation is that the lubricating oil that rectifying is gone out carries out multiple-grade molecular distillation again;
Described membrane filtration be after the lubricating oil after molecular distillation is heated through tubular fibre membrane filtration, obtain base oil by cooling.
In the present invention, in described flocculation step, organic floculant add-on is to process 8% of liquid measure, 100 DEG C of the temperature of reaction of organic floculant, the 30 minutes reaction times of organic floculant, 200 revs/min of stirring velocitys.
In the present invention, described organic floculant is Poly Dimethyl Diallyl Ammonium Chloride, oxyethane, propylene, thanomin and ethylenediamine copolymer.
In the present invention, described molecular distillation is at least three grades, and the temperature control of the first step is 140 DEG C, and the temperature control of residue progression is 110 DEG C.
In the present invention, in described PP strainer, the aperture of micropore filtering film is 0.5 micron.
In the present invention, described flame filter press is physical filtering, and flame filter press filters out a certain size large granular impurity and the suspended substance in waste lubricating oil.
In the present invention, the material of described hollow-fibre membrane is tetrafluoroethylene, and aperture is 0.2 μ m, and the external diameter of hollow-fibre membrane is 1.0mm, and the internal diameter of hollow-fibre membrane is 1mm; In use, the Reclaimed Base Oil rate of recovery is 93.42% in the present invention, and the scope of base oil is 200SN.
Embodiment 3:
Process for regeneration of waste lubricating oil, is characterized in that comprising the following steps successively: wire cloth filtration, sedimentation, Plate Filtration, flocculation, rectifying, molecular distillation and membrane filtration;
Described wire cloth is filtered into and adopts 150 object wire cloths to filter for the first time waste lubricating oil, removes the great machinery impurity in waste lubricating oil;
Described sedimentation is the waste lubricating oil that removes great machinery impurity to be put into slurry tank carry out sedimentation, and the settling time is 20 hours, and settling temperature is 90 DEG C;
Described Plate Filtration is that the waste lubricating oil upper strata oil mixture of getting sedimentation is put into flame filter press and filtered for the second time, obtains treatment solution;
Described flocculation is that in heat-processed, treatment solution adds organic floculant after rising to 80 DEG C, and stirs by treatment solution heating, and finally controlling temperature is 150 DEG C, and be 40 minutes heat-up time, and whole heat-processed passes into nitrogen as shielding gas;
Described rectifying be by the treatment solution after flocculation carry out successively degassed, dry after, proceed to and in rectifying tower, carry out rectifying;
Described molecular distillation is that the lubricating oil that rectifying is gone out carries out multiple-grade molecular distillation again;
Described membrane filtration be after the lubricating oil after molecular distillation is heated through tubular fibre membrane filtration, obtain base oil by cooling.
In the present invention, in described flocculation step, organic floculant add-on is to process 8% of liquid measure, 100 DEG C of the temperature of reaction of organic floculant, the 30 minutes reaction times of organic floculant, 200 revs/min of stirring velocitys.
In the present invention, described organic floculant is Poly Dimethyl Diallyl Ammonium Chloride, oxyethane, propylene, thanomin and ethylenediamine copolymer.
In the present invention, described molecular distillation is at least three grades, and the temperature control of the first step is 150 DEG C, and the temperature control of residue progression is 120 DEG C.
In the present invention, in described PP strainer, the aperture of micropore filtering film is 0.22 micron.
In the present invention, described flame filter press physical filtering, flame filter press filters out a certain size large granular impurity and the suspended substance in waste lubricating oil.
In the present invention, the material of described hollow-fibre membrane is tetrafluoroethylene, and aperture is 0.5 μ m, and the external diameter of hollow-fibre membrane is 2.0mm, and the internal diameter of hollow-fibre membrane is 1.4mm; In use, the Reclaimed Base Oil rate of recovery is 94.55% in the present invention, and the scope of base oil is 350SN.
The invention is not restricted to above-described embodiment, other embodiment that technical scheme according to the present invention obtains all should fall within the scope of protection of the present invention.
Claims (6)
1. process for regeneration of waste lubricating oil, is characterized in that comprising the following steps successively: wire cloth filtration, sedimentation, Plate Filtration, flocculation, rectifying, molecular distillation and membrane filtration;
Described wire cloth is filtered into and adopts 150 object wire cloths to filter for the first time waste lubricating oil, removes the great machinery impurity in waste lubricating oil;
Described sedimentation is the waste lubricating oil that removes great machinery impurity to be put into slurry tank carry out sedimentation, and the settling time is 18-20 hour, and settling temperature is 80-90 DEG C;
Described Plate Filtration is that the waste lubricating oil upper strata oil mixture of getting sedimentation is put into flame filter press and filtered for the second time, obtains treatment solution;
Described flocculation is that in heat-processed, treatment solution adds organic floculant after rising to 80 DEG C, and stirs by treatment solution heating, and finally controlling temperature is 150 DEG C, and be 30-40 minute heat-up time, and whole heat-processed passes into nitrogen as shielding gas;
Described rectifying be by the treatment solution after flocculation carry out successively degassed, dry after, proceed to and in rectifying tower, carry out rectifying;
Described molecular distillation is that the lubricating oil that rectifying is gone out carries out multiple-grade molecular distillation again;
Described membrane filtration be after the lubricating oil after molecular distillation is heated through tubular fibre membrane filtration, obtain base oil by cooling.
2. process for regeneration of waste lubricating oil according to claim 1, it is characterized in that: in described flocculation step, organic floculant add-on is to process the 5%-10% of liquid measure, 80 DEG C-150 DEG C of the temperature of reaction of organic floculant, the 30 minutes reaction times of organic floculant, 200 revs/min of stirring velocitys.
3. process for regeneration of waste lubricating oil according to claim 1, is characterized in that: described organic floculant is Poly Dimethyl Diallyl Ammonium Chloride, oxyethane, propylene, thanomin and ethylenediamine copolymer.
4. process for regeneration of waste lubricating oil according to claim 1, is characterized in that: described molecular distillation is at least three grades, and the temperature control of the first step is 130 DEG C-150 DEG C, and the temperature control of residue progression is 100 DEG C-120 DEG C.
5. process for regeneration of waste lubricating oil according to claim 1, is characterized in that: described flame filter press is physical filtering, and flame filter press filters out a certain size large granular impurity and the suspended substance in waste lubricating oil.
6. process for regeneration of waste lubricating oil according to claim 1, is characterized in that: the material of described hollow-fibre membrane is tetrafluoroethylene, and aperture is 0.01-0.5 μ m, and the external diameter of hollow-fibre membrane is 0.5-2.0mm, and the internal diameter of hollow-fibre membrane is 0.3-1.4mm.
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| CN201410277314.6A CN104059770A (en) | 2014-06-20 | 2014-06-20 | Waste lubricating oil regeneration process |
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| CN201410277314.6A CN104059770A (en) | 2014-06-20 | 2014-06-20 | Waste lubricating oil regeneration process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2010139863A (en) * | 2010-09-29 | 2012-04-10 | Николай Вячеславович Проселков (RU) | METHOD FOR REGENERATING WASTE OILS |
| CN103045342A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Waste lubricating oil pretreatment method |
| CN103589499A (en) * | 2013-11-19 | 2014-02-19 | 四川省德阳昌盛至轩石油化工厂 | Regeneration technology for molecular distillation treatment of spent lubrication oil |
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2014
- 2014-06-20 CN CN201410277314.6A patent/CN104059770A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2010139863A (en) * | 2010-09-29 | 2012-04-10 | Николай Вячеславович Проселков (RU) | METHOD FOR REGENERATING WASTE OILS |
| CN103045342A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Waste lubricating oil pretreatment method |
| CN103589499A (en) * | 2013-11-19 | 2014-02-19 | 四川省德阳昌盛至轩石油化工厂 | Regeneration technology for molecular distillation treatment of spent lubrication oil |
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Application publication date: 20140924 |
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