CN108587764A - Base oil after being recycled to waste lubricating oil carries out refined method - Google Patents
Base oil after being recycled to waste lubricating oil carries out refined method Download PDFInfo
- Publication number
- CN108587764A CN108587764A CN201810568478.2A CN201810568478A CN108587764A CN 108587764 A CN108587764 A CN 108587764A CN 201810568478 A CN201810568478 A CN 201810568478A CN 108587764 A CN108587764 A CN 108587764A
- Authority
- CN
- China
- Prior art keywords
- extractant
- base oil
- lubricating oil
- carries out
- recycled
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- 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
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Lubricants (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses the base oils after a kind of recycling to waste lubricating oil to carry out refined method, is extracted the undesirable components in base oil with extractant, the lubricating oil after being refined.The base oil refers to waste lubricating oil after the pretreatments such as conventional plate compression, rectification under vacuum, the base oil that side take-off obtains, contain the undesirable components such as target product lubricating oil component and polycyclic short side catenanes in base oil, extractant can extract the undesirable components in base oil.The extractant is N, at least one of N dimethylformamides, N methyl pyrrolidones, and include the water less than 2%.Method through the invention recycles lubricating oil from base oil, and yield is significantly increased compared with using furfural, phenol as extractant, lube product Quality advance.
Description
Technical field
The present invention relates to a kind of waste lubricating oil recycling gained base oils to carry out refined method, belongs to waste lubricant oil regeneration skill
Art.
Background technology
Lubricating oil be can be used for automobile, on mechanical equipment to reduce the lubricant of friction, protection machinery and workpiece, mesh
It is preceding mainly to be extracted from crude oil.Oil makees non-renewable resources, and storage level is increasingly reduced, using rational method regenerated
Lubricating oil has huge economic benefit and social benefit, the call for especially meeting China's environmental protection, reducing the wasting of resources.
In addition, the lubricating oil recycled from waste lubricating oil, stability is more preferable than new oil, more popular with users.
Country's waste lubricant oil regeneration at present includes the steps such as purification, pickling, the refined, fractionation of bleaching earth adsorption than method earlier
Suddenly, the reclaimed oil of the method production is of poor quality, and the wastewater flow rate of generation is big, is gradually eliminated.In recent years with solvent extraction
It is more apparent instead of the refined trend of pickling and bleaching earth adsorption, especially using the low price such as furfural, phenol solvent as extractant, extraction profit
Undesirable components in lubricant base oil.70 years last century are right, and two sets of phenol refining devices are changed to N- by Exxon Corporation first
MP lube oil refining, document show that N-Methyl pyrrolidone refines, high income better than phenol refining effect, but before this due to
N-Methyl pyrrolidone relies primarily on import, expensive, therefore N-Methyl pyrrolidone process for purification is not general at home always
All over use.
At present since domestic N-Methyl pyrrolidone ability improves, price has been substantially reduced, but with N- crassitudes
Ketone is that extractant is lubricated oil refining, and cost is still higher than using phenol, furfural as extractant.Through experimental studies have found that, N,
Dinethylformamide has preferable refining effect to base oil, compound with n,N-Dimethylformamide and N-Methyl pyrrolidone
Solvent is fractionated gained base oil as extractant, to waste lubricating oil and carries out refined being to select well, n,N-Dimethylformamide
It is cheap, the high disadvantage of N-Methyl pyrrolidone production cost can be made up.
Invention content
The purpose of the present invention is to provide the base oils after a kind of recycling to waste lubricating oil to carry out refined method, can solve
The problem that existing process for purification wastewater flow rate is big, yield is low, of high cost.
Scheme is used by the present invention solves its technical problem：Invent it is a kind of to waste lubricating oil recycle after base oil into
The refined method of row, it is characterised in that carry out successively as follows：
（1）Base oil and extractant are added in extraction tower, is inversely contacted under extraction conditions, obtains extract liquor and raffinate
Liquid；The extractant includes at least one of n,N-Dimethylformamide and N-Methyl pyrrolidone and a small amount of water, institute
The extraction conditions stated include the composition of extractant, extraction temperature, extractant and base oil mass ratio, water content；
（2）Step（1）Extract liquor containing impurity, undesirable components and extractant in gained enters extractant recovery tower and carries out essence
It evaporates, tower top obtains extractant, and tower reactor obtains impurity and undesirable components；
（3）Step（1）Raffinate of the gained kind containing lube product and a small amount of extractant enters lube oil finishing tower and carries out essence
It evaporates, obtains extractant and lube product；
（4）Step（2）And step（3）Extractant obtained by rectifying is recycled back to extractant storage tank, recycling.
Preferably, the group of extractant becomes：N,N-Dimethylformamide and N-Methyl pyrrolidone are combined with arbitrary proportion,
Extractant is more preferably selected as only with N,N-dimethylformamide.
Based on mass fraction, water content is less than 2% in extractant.Extraction temperature is 60-90 DEG C.Extractant and base oil
Mass ratio is 0.5-2.The operating pressure of extractant recovery tower is 1-10kpa.The operating pressure of lube oil finishing tower is 1-
10kpa。
Compared with prior art, the beneficial effects of the invention are as follows：
N,N-Dimethylformamide and N-Methyl pyrrolidone double solvents of the present invention using water content less than 2% as extractant,
The impurity and undesirable components in base oil are extracted, extract liquor and raffinate recycle extractant by rectifying column respectively, pass through this
The lube product that method obtains, yield ratio improve 5% or more using existing process for purification, have good product quality, are produced into
The features such as this is low.
Description of the drawings
Attached drawing 1 is the process flow chart of the method for the present invention.
Figure label is as follows：1, extractant；2, base oil；3, extraction tower；4, raffinate；5, extract liquor；6, olein is lubricated
Tower processed；7, extractant is recycled；8, lube product；9, extractant recovery tower；10, extractant is recycled；11, impurity and non-ideal group
Point；12, extractant circulating tank；13, pipeline.
Specific implementation mode
The present invention is according to extracting operation and the proposition of rectifying basic theories, selected extractant N, N- dimethyl formyls
Amine and N-Methyl pyrrolidone are to impurity and unreasonablys such as polycyclic short side catenanes, sulphur, oxynitrides, pitches in waste lubricating oil
Think that component has good selectivity and solvability, therefore the present invention is using the double solvents of the two or only with therein one
Kind is used as extractant.Since waste lubricating oil has the characteristics that boiling point is high, solidification point is high, when carrying out extracting operation at 60-90 DEG C,
The mobility of base oil is poor, therefore takes the circumstances into consideration to add a small amount of water into extractant to improve mobility.
After extracting operation, extractant to be recycled from product and impurity respectively, and recycle.Due to changing in lubricating oil
It is high to study point boiling point, side reaction easily occurs with atmospheric distillation and goes bad, therefore is operated using rectification under vacuum.
The process of the present invention is described in further detail with reference to specific embodiments of the present invention, but real
Scope of the presently claimed invention can not be limited by applying example.
Embodiment one
In the present embodiment, using grand celebration second line of distillation base oil as raw material, pure n,N-Dimethylformamide is extractant 1, extractant
In it is not aqueous, the mass ratio of extractant and base oil is 1:2, the two continuously enters extraction tower 3, keeps 60 DEG C of extraction temperature, inverse
Extracting operation is completed to contact, column overhead is extracted and tower reactor respectively obtains raffinate 4, extract liquor 5.
Extract liquor enters in extractant recovery tower 9, and rectification under vacuum operation is carried out at 10 kpa, and tower reactor obtains impurity and non-
Ideal composition 11, the extractant 10 that tower top obtains are reused through pipeline 13 into extraction tower into extractant circulating tank 12.
Raffinate enters in lube oil finishing tower 6, and rectification under vacuum operation is carried out at 10 kpa, and tower reactor obtains lubricating oil production
Product 8, yield 86%, the recycling extractant 7 that tower top obtains enter extraction tower again into extractant circulating tank 12 through pipeline 13
Secondary use.
Embodiment two
The present embodiment and the difference of embodiment one be, using the grand celebration line base oil that subtracts three as raw material, n,N-Dimethylformamide and
The mixed liquor of N-Methyl pyrrolidone is extractant 1, the matter of n,N-Dimethylformamide and N-Methyl pyrrolidone in extractant
Amount is than being 1:1, the mass fraction of water is 1%, and the mass ratio of extractant and base oil is 1:1, the two continuously enters extraction tower 3, protects
70 DEG C of extraction temperature is held, extracting operation is completed in reverse contact, extracts column overhead and tower reactor respectively obtains raffinate 4, extract liquor 5；
Extract liquor enters in extractant recovery tower 9, and rectification under vacuum operation is carried out at 6 kpa, and tower reactor obtains impurity and non-ideal
Component 11, the recycling extractant 10 that tower top obtains are reused through pipeline 13 into extraction tower into extractant circulating tank 12.
Raffinate enters in lube oil finishing tower 6, and rectification under vacuum operation is carried out at 6 kpa, and tower reactor obtains lubricating oil production
Product 8, yield 83.2%, the extractant 7 that tower top obtains enter extraction tower again into extractant circulating tank 12 through pipeline 13
It uses.
Embodiment three
The present embodiment and the difference of embodiment two are, using pure N-Methyl pyrrolidone as extractant 1, the quality of water point in extractant
Number is 2%, and the mass ratio of extractant and base oil 2 is 2:1, the two continuously enters extraction tower 3, keeps 90 DEG C of extraction temperature, inversely
Extracting operation is completed in contact, extracts column overhead and tower reactor respectively obtains raffinate 4, extract liquor 5；
Extract liquor enters in extractant recovery tower 9, and rectification under vacuum operation is carried out at 1 kpa, and tower reactor obtains impurity and non-ideal
Component 11, the extractant 10 that tower top obtains are reused through pipeline 13 into extraction tower into extractant circulating tank 12.
Raffinate enters in lube oil finishing tower 6, and rectification under vacuum operation is carried out at 1 kpa, and tower reactor obtains lubricating oil production
Product 8, yield 80.3%, the extractant 7 that tower top obtains enter extraction tower again into extractant circulating tank 12 through pipeline 13
It uses.
Claims (8)
1. it is a kind of to waste lubricating oil recycle after base oil carry out refined method, it is characterised in that as follows successively into
Row：
（1）Base oil and extractant are added in extraction tower, is inversely contacted under extraction conditions, obtains extract liquor and raffinate
Liquid；The extractant includes at least one of n,N-Dimethylformamide and N-Methyl pyrrolidone and a small amount of water；Institute
The extraction conditions stated include the composition of extractant, extraction temperature, extractant and base oil mass ratio, water content；
（2）Step（1）Extract liquor containing impurity, undesirable components and extractant in gained enters extractant recovery tower and carries out essence
It evaporates, tower top obtains extractant, and tower reactor obtains impurity and undesirable components；
（3）Step（1）Raffinate of the gained kind containing lube product and a small amount of extractant enters lube oil finishing tower and carries out essence
It evaporates, obtains extractant and lube product；
（4）Step（2）And step（3）Extractant obtained by rectifying is recycled back to extractant storage tank, recycling.
2. the base oil after being recycled as described in claim 1 to waste lubricating oil carries out refined method, it is characterised in that extractant
Group become：N,N-dimethylformamide and N-Methyl pyrrolidone are combined with arbitrary proportion.
3. the base oil after being recycled as claimed in claim 2 to waste lubricating oil carries out refined method, it is characterised in that extraction
Agent is only with N,N-dimethylformamide.
4. the base oil after being recycled as described in claim 1 to waste lubricating oil carries out refined method, it is characterised in that with quality
Score meter, water content is less than 2% in extractant.
5. the base oil after being recycled as described in claim 1 to waste lubricating oil carries out refined method, it is characterised in that extraction temperature
Degree is 60-90 DEG C.
6. the base oil after being recycled as described in claim 1 to waste lubricating oil carries out refined method, it is characterised in that extractant
Mass ratio with base oil is 0.5-2.
7. the base oil after being recycled as described in claim 1 to waste lubricating oil carries out refined method, it is characterised in that extractant
The operating pressure of recovery tower is 1-10kpa.
8. the base oil after being recycled as described in claim 1 to waste lubricating oil carries out refined method, it is characterised in that lubricating oil
The operating pressure for the treatment of column is 1-10kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568478.2A CN108587764A (en) | 2018-06-05 | 2018-06-05 | Base oil after being recycled to waste lubricating oil carries out refined method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568478.2A CN108587764A (en) | 2018-06-05 | 2018-06-05 | Base oil after being recycled to waste lubricating oil carries out refined method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108587764A true CN108587764A (en) | 2018-09-28 |
Family
ID=63630857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810568478.2A Pending CN108587764A (en) | 2018-06-05 | 2018-06-05 | Base oil after being recycled to waste lubricating oil carries out refined method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108587764A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749841A (en) * | 2019-01-30 | 2019-05-14 | 四川锐恒润滑油有限公司 | A kind of lube base oil Hydrolysis kinetics system and technique |
| CN110923051A (en) * | 2019-12-06 | 2020-03-27 | 烟台立衡环保科技有限公司 | Regeneration refining process for waste lubricating oil |
| CN111019752A (en) * | 2019-12-23 | 2020-04-17 | 上海天汉环境资源有限公司 | Method and device for regenerating and refining waste mineral oil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238551B1 (en) * | 1999-02-16 | 2001-05-29 | Miami University | Method of removing contaminants from petroleum distillates |
| US6320090B1 (en) * | 1999-03-10 | 2001-11-20 | Miami University | Method of removing contaminants from petroleum distillates |
| CN101171325A (en) * | 2005-03-08 | 2008-04-30 | Ari技术有限公司 | Method for producing base lubricating oil from waste oil |
| CN104893767A (en) * | 2015-05-19 | 2015-09-09 | 李菊明 | A production process of high-quality fuel oil from waste engine oil |
-
2018
- 2018-06-05 CN CN201810568478.2A patent/CN108587764A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238551B1 (en) * | 1999-02-16 | 2001-05-29 | Miami University | Method of removing contaminants from petroleum distillates |
| US6320090B1 (en) * | 1999-03-10 | 2001-11-20 | Miami University | Method of removing contaminants from petroleum distillates |
| CN101171325A (en) * | 2005-03-08 | 2008-04-30 | Ari技术有限公司 | Method for producing base lubricating oil from waste oil |
| CN104893767A (en) * | 2015-05-19 | 2015-09-09 | 李菊明 | A production process of high-quality fuel oil from waste engine oil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749841A (en) * | 2019-01-30 | 2019-05-14 | 四川锐恒润滑油有限公司 | A kind of lube base oil Hydrolysis kinetics system and technique |
| CN109749841B (en) * | 2019-01-30 | 2021-07-09 | 四川锐恒润滑油有限公司 | Lubricating oil base oil extraction and refining system and process |
| CN110923051A (en) * | 2019-12-06 | 2020-03-27 | 烟台立衡环保科技有限公司 | Regeneration refining process for waste lubricating oil |
| CN111019752A (en) * | 2019-12-23 | 2020-04-17 | 上海天汉环境资源有限公司 | Method and device for regenerating and refining waste mineral oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108587764A (en) | Base oil after being recycled to waste lubricating oil carries out refined method | |
| CN105296135B (en) | A kind of regeneration method of waste lubricating oil | |
| CN110372512B (en) | Separation and purification process of dimethyl carbonate | |
| CN102452888A (en) | Method for refining 1-hexene from fischer tropsch synthetic oils | |
| CN105907452B (en) | A kind of combined technical method making waste lubricant oil regeneration by being heat-treated | |
| CN102585899B (en) | Full liquid phase hydrogenation method of coal tar | |
| CN105255576B (en) | The method and its application of two-stage extraction purification producing base oil by regenerating waste lubricating oil | |
| CN105754704A (en) | Method for increasing yield of base oil by adopting extracted solution for secondary extraction | |
| CN103923690B (en) | A kind of method extracting catalytic slurry aromatic hydrocarbons | |
| CN101289362A (en) | Process for preparing 1-amylene by separating C5 distillate of petroleum | |
| CN108569952B (en) | Method for separating methanol-methylal by ionic liquid extractive distillation | |
| CN108203595A (en) | A kind of method of aromatic hydrocarbons and alkane in extracting separation diesel oil distillate | |
| CN106986751B (en) | Method for extracting crude phenol from phenol oil | |
| CN111559950A (en) | Method for separating cyclopentane and 2, 2-dimethylbutane | |
| CN100999434A (en) | 5C separating and comprehensive utilization by acetonitrile solvent method | |
| CN102676215B (en) | Method for improving gassing resistance of transformer oil and equipment for producing transformer oil | |
| CN104370696A (en) | Novel method for separating ethylene glycol and 1,2-pentanediol | |
| CN105419859A (en) | Reverse back extraction refining method for petroleum reduced pressure distillation distillate and application thereof | |
| CN109704908B (en) | Method for preparing hexane from aromatic raffinate oil | |
| CN109735362A (en) | A method of I class base oil of regeneration is non-plus hydrogen produces II class Reclaimed Base Oil | |
| CN113698958B (en) | Method for separating aromatic hydrocarbon and saturated hydrocarbon in catalytic cracking slurry oil through composite solvent | |
| CN212504657U (en) | System for hydrogenation and extractive distillation of crude benzene | |
| CN108690656B (en) | Refining method of synthetic ester lubricating oil crude product | |
| CN110903861B (en) | Extracting agent for extracting naphthalene, preparation method and application thereof, and method and device for removing naphthalene from raw gas | |
| CN115286492A (en) | Cardanol-based polymer polyol and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180928 |