CN101570714A - Used oil regenerated by refining and distilling mixed alkali - Google Patents
Used oil regenerated by refining and distilling mixed alkali Download PDFInfo
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- CN101570714A CN101570714A CNA2008100944328A CN200810094432A CN101570714A CN 101570714 A CN101570714 A CN 101570714A CN A2008100944328 A CNA2008100944328 A CN A2008100944328A CN 200810094432 A CN200810094432 A CN 200810094432A CN 101570714 A CN101570714 A CN 101570714A
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- carclazyte
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Abstract
The invention relates to used oil regenerated by refining and distilling mixed alkali in a pollutant-free regenerating process, which does not use sulphuric acid and carclazyte or just uses little carclazyte. The regenerating process has the advantages of small device investment, less operation expanse and good product quality and can not only be used in a continuous device more than 4000t/a, but also can be used in a disconnected device below 2000t/a. In the process, mixed used oils containing used internal combustion engine oil, used industrial lubricant and used light oil are chemically treated, and medicine distilling is then treated. The obtained distillate oils comprise diesel oil, base oil or machinery oil and have light color and good stability.
Description
Technical field
The relevant regeneration that mixes used oil of the present invention.The present invention is a pollution-free reclaiming process.Just one without sulfuric acid, need not or only use the technology of a small amount of carclazyte.And neither expensive difficult operation on the equipment.
Background technology
Since the sixties in last century, world's pay attention to day by day environment protection.Because the sulfurous gas that produces during sulfuric acid refining process is implemented etc. are to the severe contamination of air, the acid sludge of generation is to the pollution of soil and water, and waste oil regeneration effort at first is exactly to abolish sulfuric acid treatment in the complete processing.Distillation-carclazyte, distillation-hydrogenation, high temperature carclazyte, propane-distillation-hydrogenation, chemical demetalization-hydrogenation, distillation-solvent treatment-hydrogenation, solvent treatment-distillation-carclazyte, distillation-solvent treatment-many vitriolic reclaiming process flow processs of having cancelled such as carclazyte have appearred.
China has also carried out the effort of some exploitation pollution-free technologies, has successfully developed distillation-furfural treatment-carclazyte technology and high temperature carclazyte technology.But the former is owing to investment fails too greatly to build, and the latter then has problem such as equipment coking to fail popular owing in service.So that after State Bureau of Technical Supervision has issued standard GB/T17145-1997 10 years, still very ineffective to the supervision of technology of waste oil regenerating, so that the little waste oil regeneration of numerous domestic enterprise, be still the world of sulfuric acid treatment.Therefore seek the pollution-free technology that a kind of energy is fit to the numerous waste oil regeneration factories of differing in size of China, real is the task of top priority.
During chemical plant, the south of the River, nineteen fifty Jilin Province bureau of industry Jilin processing shale crude oil, the senior technical director is the big Doctor of engineering xiaojin pill of Tokyo Supreme Being, he stirs with the NaOH aqueous solution and the shale crude oil of concentration more than 40%, connect alkali band oil then and carry out the coking of still formula together, the coker distillate color that obtains is obviously improved, and illustrates that concentrated base is handled and band alkali distillation coking bonded technology has powerful refining ability to shale oil.
The U.S. Pat of announcing in 1981 4252637 adopts the mixed alkali liquor of NaOH and KOH, in 200 ℃ to not being higher than flocculation treatment waste oil under 340 ℃ the temperature.After the throw out separation, the waste oil of sloughing impurity can reduce the consumption of sulfuric acid carclazyte greatly in follow-up sulfuric acid-clay treatment.And the optimal subsequent technique in caustic alkali flocculation back still distills, and can not separate the alkali after the flocculation.
Summary of the invention
It is little that the present invention has facility investment, and the advantage that process cost is few both can be used for the above continuous apparatus of 4000t/a, can be used for 500-2000t/a again and was interrupted device.
After with the dense mixed base aqueous solution used oil being handled, again with buck waste oil thermal dehydration together, hyperthermic treatment, underpressure distillation can obtain of light color, the distilled oil of good security.
Used oil refers to the mixing used oil that general waste oil collection merchant sells.Wherein contain waste internal-combustion engine oil, useless machinery oil, useless light oil etc.It after crude iron silk screen filter and sedimentation, is added mixed base, implement physical chemistry and handle.
The mixed base major ingredient is NaOH and KOH, also allows the K of appropriate amount
2CO
3And Na
2CO
3
Mixed base is 0.5～10% to the consumption of used oil, and happiness 1～5% likes 2.0～2.5% most.
NaOH is a major ingredient in the mixed base, and content is 50%～100%.The content of KOH is 0%～50%.K
2CO
3And Na
2CO
3Be 0～on a small quantity.
Mixed base is made into the aqueous solution of 30～70% concentration.Existing undissolved solid suspends in 70% the alkali lye, and 30% alkali lye then has relatively large water to steam in subsequent operations, and therefore the concentration of happiness is about 50%.
Waste oil mixes with alkali lye, available mechanical stirring or pump circulation.Be no more than under 90 ℃ the temperature, agitation cycle is after 20 minutes, the careful dehydration that heats up under continuous agitation cycle then, and dehydration is carried out at 130 ℃～180 ℃.
Dehydration is carried out in the air distillation system.Because some lightweight oil can steam when dehydration.The dehydration back continues to react under normal pressure.Between can after being warmed up to 250 ℃ to 340 ℃, stop during engler distillation.Be cooled to 150 ℃ then, carry out underpressure distillation.During continuous still battery, the atmospheric pressure kiln temperature out can not surpass 340 ℃, and the vacuum furnace temperature out can not be above 380 ℃.
Underpressure distillation is carried out under absolute pressure 0.133Kpa～4Kpa (1～30mmHg post).
Cut out light oil in the distillation, lighter body, three cuts of middle matter base oil, at the bottom of the still for containing the alkali Residual oil.
Contain the alkali Residual oil following several method of disposal arranged:
(1) will contain the alkali Residual oil and continue deep drawing under reduced pressure, till steaming to the heavy base oil.Should under the absolute pressure of 0.133Kpa, be no more than 380 ℃.
Stop vacuum pump then, recover normal pressure, the residue coking.Coker distillate is used to mix joins oil fuel or diesel oil.Alkali in the still is burnt take out after, the burning heat-obtaining is also obtained calcining basic, Recycling or do his and use.
(2) will contain the dealkalize of alkali Residual oil after, carry out underpressure distillation.The heavy distillate that steams is as base oil or machinery oil, Residual oil act as a fuel oil or rubber filling oil.
(3) place of pitch factory is arranged nearby, might mix batching as pitch.
Embodiment
Embodiment: the used oil with metal coarse net filtering, deposition dehydrating after assorted, handle with 2.5% mixed base.The water of adding 2.5% is made into 50% aqueous solution in mixed base.Contain NaOH 50% and KOH 50% in the mixed base.
Used oil and mixed alkali liquor were stirred 20 minutes under 90 ℃ temperature, stir heat up down dehydration and chemical treatment then.Dehydration, chemical treatment and air distillation merge to be carried out.Be cooled to 150 ℃ then, vacuumize.
Under the 1Kpa absolute pressure, heat up cut is extracted.Cut out light oil earlier, cut out two lubricating oil distillates again.Light lubricating oil cut color water-white accounts for used oil 15%.Middle matter lubricating oil distillate color is light green to deep yellow, and mixing the back is light green, accounts for used oil 57%.Water white diesel oil distillate accounts for waste oil 5%.Contain the alkali Residual oil and account for waste oil 23%, wherein contain alkali 2.5%, operational losses 2.5%.
Claims (4)
1. the present invention is a chemical treatment-distil process.Without sulfuric acid, need not or only use a small amount of carclazyte, handle the mixing waste oil that contains the waste internal-combustion engine wet goods.Produce diesel oil, base oil or machinery oil.
2. the mixed ammonium/alkali solutions of chemical treatment working concentration more than 30%.This mixed base major ingredient is NaOH and KOH, and wherein NaOH accounts for 50%-100%.KOH accounts for 0%-50%.Also an amount of Na can be arranged
2CO
3And K
2CO
3
3. chemical treatment is in normal temperature or beginning below 100 ℃.Mixed base is 0.5%～10% to the ratio of waste oil raw material.Happiness 1%～5% likes 2%～2.5% most.Handle the dehydration that heats up after 20 minutes.Continue chemical treatment under anhydrous state, to the temperature of any selection, chemical treatment can combine with air distillation.One side is handled, and one side steams diesel oil or thin fuel oil.Also part diesel oil can be stayed in the underpressure distillation and be steamed.
4. normal residual oil goes underpressure distillation.Under the absolute pressure of 1～30mmHg or 0.133～4Kpa, be no more than 350 ℃ (engler distillations) or decompression boiler tube outlet is no more than under 380 ℃ (continuous still batterys) at liquidus temperature, cut out two or more lubricating oil distillates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100944328A CN101570714A (en) | 2008-05-04 | 2008-05-04 | Used oil regenerated by refining and distilling mixed alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100944328A CN101570714A (en) | 2008-05-04 | 2008-05-04 | Used oil regenerated by refining and distilling mixed alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101570714A true CN101570714A (en) | 2009-11-04 |
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ID=41230200
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100944328A Pending CN101570714A (en) | 2008-05-04 | 2008-05-04 | Used oil regenerated by refining and distilling mixed alkali |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329689A (en) * | 2011-08-26 | 2012-01-25 | 李永劲 | Additive and process for regeneration of waste oil for automobile engine |
| CN103215116A (en) * | 2013-05-10 | 2013-07-24 | 福建龙岩力浩新能源有限公司 | Regenerating process of waste lubricating oil |
| CN108485790A (en) * | 2018-03-26 | 2018-09-04 | 福斯特惠勒（河北）工程设计有限公司 | A method of improving regenerating waste oil treating capacity |
-
2008
- 2008-05-04 CN CNA2008100944328A patent/CN101570714A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329689A (en) * | 2011-08-26 | 2012-01-25 | 李永劲 | Additive and process for regeneration of waste oil for automobile engine |
| CN102329689B (en) * | 2011-08-26 | 2013-11-20 | 李永劲 | Additive and process for regeneration of waste oil for automobile engine |
| CN103215116A (en) * | 2013-05-10 | 2013-07-24 | 福建龙岩力浩新能源有限公司 | Regenerating process of waste lubricating oil |
| CN103215116B (en) * | 2013-05-10 | 2015-05-13 | 福建龙岩力浩新能源有限公司 | Regenerating process of waste lubricating oil |
| CN108485790A (en) * | 2018-03-26 | 2018-09-04 | 福斯特惠勒（河北）工程设计有限公司 | A method of improving regenerating waste oil treating capacity |
| CN108485790B (en) * | 2018-03-26 | 2021-03-16 | 福斯特惠勒（河北）工程设计有限公司 | Method for improving regeneration treatment capacity of waste engine oil |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091104 |