CN108865401A - A kind of method of waste mineral oil recycled again - Google Patents
A kind of method of waste mineral oil recycled again Download PDFInfo
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- CN108865401A CN108865401A CN201810865763.0A CN201810865763A CN108865401A CN 108865401 A CN108865401 A CN 108865401A CN 201810865763 A CN201810865763 A CN 201810865763A CN 108865401 A CN108865401 A CN 108865401A
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- Prior art keywords
- thin film
- level
- mineral oil
- waste mineral
- oil
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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
- 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
- C10M175/02—Working-up used lubricants to recover useful products ; Cleaning mineral-oil based
-
- 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
-
- 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
Abstract
The present invention provides a kind of method of waste mineral oil recycled again, weight recoverying and utilizing method includes the following steps, (1) pre- thermoprecipitation；(2) primary distillation；(3) level-one thin film evaporation；(4) second level thin film evaporation；(5) three-level thin film evaporation, it is 70%-80% that the present invention, which can be realized the effective component rate of recovery in waste mineral oil,；Carbon content is 0.0% in waste mineral oil, and resulting recycling machine oil reaches using standard, is particularly suitable for the recycling lower base oil of flash-point.
Description
Technical field
The present invention relates to Oil Recoveries to utilize technical field, and in particular to a kind of side of waste mineral oil recycled again
Method.
Background technique
Mineral oil is the most widely used fossil energy of the current mankind, due to being influenced by following factor in use process,
Mineral oil then becomes waste mineral oil.Main component is hydrocarbons in mineral oil, still, when mineral oil is by following factor shadow
When ringing, mineral oil then will become unsaturated hydrocarbons, i.e. waste mineral oil：
(1) in use, due to system and machine casing bad sealing, dust, grit are dipped in oil for oil；Also it is easy
It is made dirty by various mechanical admixtures, such as metal filings, dust, grit, fibrous matter；
(2) lubricating system, Hydraulic Power Transmission System of mechanical equipment or water-cooling apparatus are not tight enough, move the water to flow into oil.
Moisture in air can also be absorbed by oil, and water imbibition increases with oil temperature and increased；
(3) when oil and mechanical equipment contact at high temperature, oil can be thermally decomposed, and generated colloid and coke, led to oil
Lose use value.
(4) oxidation that the main reason for chemical change is air occurs in use for oil, and oxidation can generate one
A little harmful substances, such as acids, colloid, pitch, keep oily color dimmed, and viscosity increases, and acid value increases, and further will appear precipitating
The sludge of shape.
(5) such waste oil refers mainly to IC engine lubricating oil, penetrates into lubrication since part of fuel oil does not have completely burned
In oil, lubricating oil is made to lose original lubrication property.
Molecular distillation is a kind of with the gas molecule in space that escapes in liquid phase by the separation process based on gas diffusion, be
The continuous process of distillation of lock out operation is carried out under condition of high vacuum degree, substantially a kind of special liquid liquid distills isolation technics.Molecule
In distillation process, material composition to be separated can far below atmospheric boiling point at a temperature of volatilize, and thermal histories of each component
Very short therefore most mild as separation purpose product at present distillating method is big, warm particularly suitable for separation higher boiling, viscosity
The natural material of quick property.Currently, molecular distillation technique has been applied successfully to food, medicine, cosmetics, fine chemistry industry, fragrance
The industries such as industry.The method does not generate acidic and alkaline waste water, environmentally friendly, can isolate simultaneously diesel oil and gasoline, light lubricating oil and
Heavy grease.In addition, the energy consumption of molecular distillation processing used oil is also relatively low, yield is higher.
Summary of the invention
The present invention provides a kind of method of waste mineral oil recycled again, the heavy recoverying and utilizing method includes following
Step,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；It will processing
Liquid is heated to 120-170 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th flocculant is added, until flocculant
It adds；
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out essence
It evaporates；Gained distillate enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 5-150 DEG C, and pressure is that -0.3MPa-10Pa isolates the combustion of the lightweights such as petrol and diesel oil
Material oil；It will be pumped into condenser by the resulting remaining liq of level-one thin film evaporator and be cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporation
Device, the second level thin film evaporator temperature are 100-300 DEG C, pressure 20-0.1Pa, separate the mixed material of gasoline and diesel oil,
Remaining liq is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 50-
80 DEG C, pressure 0.4-0.6MPa isolates highly viscous lubricating oil.
Preferably, the above-mentioned heavy recovery process effective component rate of recovery is 70%-80%.
Preferably, above-mentioned second level thin film evaporator evaporates light lubricating oil, and molecular weight is about 280-350.
Preferably, above-mentioned three-level thin film evaporator evaporates the thick oil that molecular weight is 400 or so.
Preferably, remaining residual oil mainly contains asphalt colloid carbide in above-mentioned three-level thin film evaporator.
Preferably, the asphalt colloid carbide in above-mentioned three-level thin film evaporator, which is used as, provides the fuel of conduction oil, burns
Waste heat can be used for preheating material and abjection raw material moisture, sufficiently energy saving.
Preferably, flocculant is PAC in above-mentioned steps (1), and the flocculant additive amount and treatment fluid mass ratio are 2-3:
250。
Preferably, the moisture in above-mentioned steps (2) in distillation operation removal treatment fluid.
Beneficial effects of the present invention are：
(1) present invention is recycled waste mineral oil, to realize recycling for resource.
(2) technological operation provided by the invention that is recycled is simple, is compared to conventional recovery method, molecularly distilled
Without secondary pollution, high-efficient and operating cost is low.
(3) can be realized the effective component rate of recovery in waste mineral oil using molecularly distilled is 70%-80%；Waste mineral oil
Middle carbon content is 0.0%, and resulting recycling machine oil reaches using standard, is particularly suitable for the recycling lower base oil of flash-point.
Detailed description of the invention
Fig. 1 waste mineral oil recovery process flow chart.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with implementation of the invention
Example, technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, belongs to protection of the present invention
Range.
Embodiment 1：
The present invention provides a kind of method of waste mineral oil recycled again, weight recoverying and utilizing method includes following step
Suddenly,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；It will processing
Liquid is heated to 120 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th PAC is added, until flocculant adds；Institute
It states flocculant additive amount and treatment fluid mass ratio is 1:125.
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out essence
It evaporates；Gained distillate enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 5 DEG C, and pressure is that -0.3MPaPa isolates the light-weight fuel oils such as petrol and diesel oil；It will
It is pumped into condenser by the resulting remaining liq of level-one thin film evaporator and is cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporation
Device, the second level thin film evaporator temperature are 100 DEG C, pressure 20Pa, separate the mixed material of gasoline and diesel oil, remaining liq
It is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 50
DEG C, pressure 0.4MPa isolates highly viscous lubricating oil.
Embodiment 2：
The present invention provides a kind of method of waste mineral oil recycled again, weight recoverying and utilizing method includes following step
Suddenly,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；It will processing
Liquid is heated to 170 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th PAC is added, until flocculant adds；Institute
It states flocculant additive amount and treatment fluid mass ratio is 3:250.
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out essence
It evaporates；Gained distillate enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 150 DEG C, and pressure is that 10Pa isolates the light-weight fuel oils such as petrol and diesel oil；It will pass through
The resulting remaining liq of level-one thin film evaporator, which is pumped into condenser, is cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporation
Device, the second level thin film evaporator temperature are 300 DEG C, pressure 0.1Pa, separate the mixed material of gasoline and diesel oil, raffinate
Body is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 80
DEG C, pressure 0.6MPa isolates highly viscous lubricating oil.
Embodiment 3：
The present invention provides a kind of method of waste mineral oil recycled again, weight recoverying and utilizing method includes following step
Suddenly,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；It will processing
Liquid is heated to 145 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th PAC is added, until flocculant adds；Institute
It states flocculant additive amount and treatment fluid mass ratio is 1:125.
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out essence
It evaporates；Gained distillate enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 130 DEG C, and pressure is that 5Pa isolates the light-weight fuel oils such as petrol and diesel oil；It will pass through
The resulting remaining liq of level-one thin film evaporator, which is pumped into condenser, is cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporation
Device, the second level thin film evaporator temperature are 200 DEG C, pressure 10Pa, separate the mixed material of gasoline and diesel oil, remaining liq
It is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 65
DEG C, pressure 0.5MPa isolates highly viscous lubricating oil.
Embodiment 4：
The present invention provides a kind of method of waste mineral oil recycled again, weight recoverying and utilizing method includes following step
Suddenly,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；It will processing
Liquid is heated to 130 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th PAC is added, until flocculant adds；Institute
It states flocculant additive amount and treatment fluid mass ratio is 3:250.
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out essence
It evaporates；Gained distillate enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 40 DEG C, and pressure is that 5Pa isolates the light-weight fuel oils such as petrol and diesel oil；One will be passed through
The grade resulting remaining liq of thin film evaporator, which is pumped into condenser, is cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporation
Device, the second level thin film evaporator temperature are 150 DEG C, pressure 10Pa, separate the mixed material of gasoline and diesel oil, remaining liq
It is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 58
DEG C, pressure 0.5MPa isolates highly viscous lubricating oil.
Embodiment 5：
The present invention provides a kind of method of waste mineral oil recycled again, weight recoverying and utilizing method includes following step
Suddenly,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；It will processing
Liquid is heated to 160 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th PAC is added, until flocculant adds；Institute
It states flocculant additive amount and treatment fluid mass ratio is 1:125.
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out essence
It evaporates；Gained distillate enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 130 DEG C, and pressure is that 5Pa isolates the light-weight fuel oils such as petrol and diesel oil；It will pass through
The resulting remaining liq of level-one thin film evaporator, which is pumped into condenser, is cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporation
Device, the second level thin film evaporator temperature are 250 DEG C, pressure 10Pa, separate the mixed material of gasoline and diesel oil, remaining liq
It is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 70
DEG C, pressure 0.5MPa isolates highly viscous lubricating oil.
Table 1 is the rate of recovery and carbon content situation that molecularly distilled recycles gained mineral oil, can be obtained by table 1, using molecule
The rate of recovery of way of distillation recycling gained mineral oil is 70%-80%, and carbon content is always zero.
The rate of recovery and carbon content situation of 1 molecularly distilled of table recycling gained mineral oil
| The rate of recovery (%) | Carbon content (%) | |
| Embodiment 1 | 71 | 0.0 |
| Embodiment 2 | 75 | 0.0 |
| Embodiment 3 | 78 | 0.0 |
| Embodiment 4 | 75 | 0.0 |
| Embodiment 5 | 76 | 0.0 |
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that：It still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of method of waste mineral oil recycled again, which is characterized in that the heavy recoverying and utilizing method includes following step
Suddenly,
(1) pre- thermoprecipitation：It takes upper layer oil mixture to be put into be filtered to obtain treatment fluid in flame filter press；By treatment fluid plus
Heat is to 120-170 DEG C, and during heating, temperature is every to increase 20 DEG C, 1/5th flocculant is added, until flocculant adds
It is complete；
(2) primary distillation：After treatment fluid after flocculating successively is de-gassed, is dried, it is transferred in rectifying column and carries out rectifying；Institute
It obtains distillate and enters molecule evaporator；
(3) level-one thin film evaporation：Temperature is 5-150 DEG C, and pressure is that -0.3MPa-10Pa isolates the light-weight fuel oils such as petrol and diesel oil；
It will be pumped into condenser by the resulting remaining liq of level-one thin film evaporator and be cooled to 100 DEG C；
(4) second level thin film evaporation：The condensation resulting remaining liq of rear stage thin film evaporator is pumped into second level thin film evaporator, institute
Stating second level thin film evaporator temperature is 100-300 DEG C, pressure 0.1-20Pa, separates the mixed material of gasoline and diesel oil, remaining
Liquid is pumped into condenser, is cooled to 50 DEG C；
(5) three-level thin film evaporation：Liquid after cooling in step (4) is pumped into three-level thin film evaporator, temperature 50-80
DEG C, pressure 0.4-0.6MPa isolates highly viscous lubricating oil.
2. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that the heavy recovery process
The effective component rate of recovery is 70%-80%.
3. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that the second level film steams
Hair device evaporates light lubricating oil, and molecular weight is about 280-350.
4. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that the three-level film steams
Hair device evaporates the thick oil that molecular weight is 400 or so.
5. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that the three-level film steams
Remaining residual oil mainly contains asphalt colloid carbide in hair device.
6. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that the three-level film steams
The fuel that the asphalt colloid carbide in device is used as offer conduction oil is sent out, waste gas of incineration can be used for preheating material and abjection raw material
Moisture, it is sufficiently energy saving.
7. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that in the step (1)
Flocculant is PAC, and the flocculant additive amount and treatment fluid mass ratio are 2-3:250.
8. the method for waste mineral oil according to claim 1 recycled again, which is characterized in that in the step (2)
Distillation operation removes the moisture in treatment fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865763.0A CN108865401A (en) | 2018-08-01 | 2018-08-01 | A kind of method of waste mineral oil recycled again |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865763.0A CN108865401A (en) | 2018-08-01 | 2018-08-01 | A kind of method of waste mineral oil recycled again |
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| Publication Number | Publication Date |
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| CN108865401A true CN108865401A (en) | 2018-11-23 |
Family
ID=64306914
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| CN201810865763.0A Pending CN108865401A (en) | 2018-08-01 | 2018-08-01 | A kind of method of waste mineral oil recycled again |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177646A (en) * | 2007-10-26 | 2008-05-14 | 华南理工大学 | Method for deacidizing and regenerating waste used oil by using molecular distillation technology |
| WO2012009749A1 (en) * | 2010-07-19 | 2012-01-26 | Loyal Asset Development Limited | Process for treating used oil |
| CN102433212A (en) * | 2011-10-19 | 2012-05-02 | 北京生态岛科技有限责任公司 | Purification method and device for waste lubricant oil |
| 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 |
| CN104004581A (en) * | 2013-02-22 | 2014-08-27 | 宝山钢铁股份有限公司 | Rolled oil sludge purifying method |
| CN104059768A (en) * | 2014-06-20 | 2014-09-24 | 中材高新成都能源技术有限公司 | Waste lubricating oil regeneration process |
| CN104059764A (en) * | 2014-06-20 | 2014-09-24 | 中材高新成都能源技术有限公司 | Waste lubricating oil regeneration method |
| CN107574012A (en) * | 2017-10-16 | 2018-01-12 | 河北金谷再生资源开发有限公司 | A kind of preparation method of producing base oil by regenerating waste lubricating oil |
-
2018
- 2018-08-01 CN CN201810865763.0A patent/CN108865401A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177646A (en) * | 2007-10-26 | 2008-05-14 | 华南理工大学 | Method for deacidizing and regenerating waste used oil by using molecular distillation technology |
| WO2012009749A1 (en) * | 2010-07-19 | 2012-01-26 | Loyal Asset Development Limited | Process for treating used oil |
| CN102433212A (en) * | 2011-10-19 | 2012-05-02 | 北京生态岛科技有限责任公司 | Purification method and device for waste lubricant oil |
| CN104004581A (en) * | 2013-02-22 | 2014-08-27 | 宝山钢铁股份有限公司 | Rolled oil sludge purifying 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 |
| CN104059768A (en) * | 2014-06-20 | 2014-09-24 | 中材高新成都能源技术有限公司 | Waste lubricating oil regeneration process |
| CN104059764A (en) * | 2014-06-20 | 2014-09-24 | 中材高新成都能源技术有限公司 | Waste lubricating oil regeneration method |
| CN107574012A (en) * | 2017-10-16 | 2018-01-12 | 河北金谷再生资源开发有限公司 | A kind of preparation method of producing base oil by regenerating waste lubricating oil |
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