CN105316099A - Method for regenerating base oil by using used oil - Google Patents

Method for regenerating base oil by using used oil Download PDF

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Publication number
CN105316099A
CN105316099A CN201510883850.5A CN201510883850A CN105316099A CN 105316099 A CN105316099 A CN 105316099A CN 201510883850 A CN201510883850 A CN 201510883850A CN 105316099 A CN105316099 A CN 105316099A
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oil
base oil
extraction
flocculation
supernatant liquid
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CN201510883850.5A
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CN105316099B (en
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杨春霞
王志玲
赵阳
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University of Jinan
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University of Jinan
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Abstract

The invention relates to a method for regenerating base oil by using used oil, which comprises the following steps: putting the used oil into a sedimentation tank for natural sedimentation at room temperature, and taking supernatant liquid; adding an extracting-flocculating-neutralizing agent into the obtained supernatant liquid, stirring, then cooling until room temperature is achieved, and standing, thereby obtaining a mixed liquid after extraction-neutralization-flocculation; and filtering the mixed liquid, heating and distilling obtained filtrate, collecting an extraction agent fraction at a temperature of 60-81 DEG C for cyclic utilization, and carrying out reduced pressure distillation on residues so as to obtain base oil, wherein the mass yield of the base oil accounts for 85-89% of the mass of the supernatant liquid. According to the invention, non-base oil components such as solid impurities, soluble oxides, organic acids and colloids in the used oil can be removed well, and then reclaimed oil is obtained. The method is less in equipment investment and simple; an extraction agent can be reused, so that 'three wastes' pollution is reduced, and therefore, the method has a good market prospect.

Description

A kind of method of regenerating waste oil base oil
Technical field
The present invention relates to the regenerating waste oil basis oil treatment process that a kind of jaw and hammer mill produce.Be specifically related to a kind of conventional organic solvent extraction, flocculation technique of utilizing by the impurity removing in used oil, thus obtain the method for Reclaimed Base Oil.
Background technology
Machine oil is with mechanically to reduce friction, protects the liquid lubricant of machinery and workpiece.Machine oil is made up of base oil and additive two portions.Basis main body of oil is the alkane containing carbon number C20-C40, aromatic hydrocarbons and nitrogenous, sulphur, oxygen organism etc., used oil refers to that machine oil is in various machinery, equipment use process, due to oil product decompose by high temperature oxidation, the pollution of dust in air, carbon distribution, machinery fricative metal fragment etc., make its physicochemical property can not meet service requirements and by the machine oil changed.Crusher produces a large amount of dust due to during work, and the Working environment temperature difference is large, and general use will be changed for 3 months, produce a large amount of used oil every year, if deal with improperly or arbitrarily abandon, certainly will cause serious pollution.Used oil, can by suitable reclaimer containing very a high proportion of base oil component, to remove in waste lubricating oil the materials such as various oxidation products, water, bituminous matter, colloid, acid, carbon granule, metal filings and additive.The base oil extracted wherein continues to use, and both decreases environmental pollution, and also can bring economic benefit.
Large quantity research is carried out to regenerating waste oil process both at home and abroad.The manipulation of regeneration of domestic current used oil mainly adopts sedimentation-pickling-carclazyte technique; Sedimentation-distillation-carclazyte technique etc., all there is the shortcoming producing a large amount of solid slag in above-mentioned technique, big for environment pollution.American-European countries mainly takes distillation or hydroprocessing technique, and the method processing requirement is high, and equipment is complicated.How to select technique simple, production cost is low, and the treatment process that environmental pollution is few, has stronger Practical significance.
Summary of the invention
The object of this invention is to provide the method for the regenerating waste oil base oil that a kind of jaw and hammer mill produce, have technique simple, yield is high, the advantage that environmental pollution is little.Object of the present invention is achieved through the following technical solutions:
A method for regenerating waste oil base oil, comprises following step:
(1) sedimentation
Used oil is placed in settling bowl, and room temperature natural subsidence one week, gets supernatant liquid;
(2)-neutralization-flocculation is extracted
Add extraction-flocculation-neutralizing agent in the supernatant liquid obtained in step (1), stir 30-50 minute at temperature is 30-40 DEG C after, be cooled to normal temperature, leave standstill 24 hours, be extracted-neutralize-flocculate after mixed solution;
(3) mixed solution (2) obtained filters, and gained filtrate is the mixture containing extraction agent and base oil component;
(4) filtrate the carrying out that (3) obtain is added thermal distillation, first collect the extraction agent cut of 60-81 DEG C, residuum underpressure distillation, the cut that collection vacuum tightness is 8-10KPa, temperature is 155-250 DEG C, obtain base oil, the mass yield of base oil accounts for the 85-89% of supernatant liquor quality.
Described used oil, is the waste oil that jaw crusher and hammer mill produce, is made up of base oil and impurity; Described base oil, be made up of alkane, aromatic hydrocarbons and nitrogenous, sulphur, oxygen organic, the carbonatoms wherein in alkane molecule is 20-40; Described impurity, the chip produced by small molecules hydro carbons, oxide compound, acidic substance, dust, metal friction forms, and wherein small molecules hydro carbons, oxide compound and acidic substance are that organism in machine oil is owing to using the product causing carbochain oxidation scission in hot environment.
Described supernatant liquid, is made up of base oil and small molecules hydro carbons, oxide compound and acidic substance, and wherein small molecules hydro carbons, oxide compound and acidic substance are that organism in machine oil is owing to using the product causing carbochain oxidation scission in hot environment.
The extraction agent cut of described 60-81 DEG C is the mixture of hexanaphthene and Virahol.
Described extraction-flocculation-neutralizing agent, the mass ratio 3-5:1 of its add-on and used oil.
Described extraction-flocculation-neutralizing agent is the mixture of the aqueous solution of hexanaphthene, Virahol and alkali; The massfraction that the aqueous solution of alkali accounts for mixture is 10%; The aqueous solution of alkali is the aqueous solution of potassium hydroxide or sodium hydroxide, and the massfraction of potassium hydroxide or sodium hydroxide is 15%; The mass ratio of hexanaphthene and Virahol is 3:1.
The aqueous solution of described potassium hydroxide or sodium hydroxide, the mass ratio of its add-on and used oil is 5-8:1.
The extraction agent cut of described 60-81 DEG C, recycles.
The invention has the beneficial effects as follows: reclaiming process is simple, and equipment investment is few, easy and safe to operate, and the base oil rate of recovery is high, reusable after extraction agent recycling, environmental pollution is few, and cost recovery is lower, has certain economic and social benefit.
Embodiment
The present invention is further illustrated below in conjunction with embodiment:
Embodiment 1
The used oil of 16kg is placed in settling bowl, and room temperature natural subsidence one week, gets supernatant liquid; To in the supernatant liquid obtained, add extraction-flocculation-neutralizing agent 48-80kg, stir after 30 minutes at temperature is 30-40 DEG C, be cooled to normal temperature, leave standstill 24 hours, be extracted-neutralize-flocculate after mixed solution; Filtered by mixed solution after the extraction-neutralization-flocculation obtained, gained filtrate is the mixture containing extraction agent and base oil component; Filtrate carrying out is added thermal distillation, and first collect the extraction agent cut of 60-81 DEG C, i.e. the mixture of hexanaphthene and Virahol, for recycle; Residuum underpressure distillation, the cut that collection vacuum tightness is 8-10Kpa, temperature is 155-250 DEG C, obtains base oil, and the mass yield of base oil accounts for 85% of supernatant liquor quality;
Described extraction-flocculation-neutralizing agent is the mixture of the aqueous solution of hexanaphthene, Virahol and alkali; The total mass of its cyclohexane and Virahol is 43.2kg, and hexanaphthene is 32.4kg, and Virahol is 10.8kg, and the aqueous solution of alkali is the aqueous solution of potassium hydroxide, and quality is 4.8kg, and the massfraction of potassium hydroxide is 15%;
Embodiment 2
The used oil of 16kg is placed in settling bowl, and room temperature natural subsidence one week, gets supernatant liquid; To in the supernatant liquid obtained, add extraction-flocculation-neutralizing agent 80kg, stir after 50 minutes at temperature is 30-40 DEG C, be cooled to normal temperature, leave standstill 24 hours, be extracted-neutralize-flocculate after mixed solution; Filtered by mixed solution after the extraction-neutralization-flocculation obtained, gained filtrate is the mixture containing extraction agent and base oil component; Filtrate carrying out is added thermal distillation, first collect the extraction agent cut of 60-81 DEG C, the i.e. mixture of hexanaphthene and Virahol, for recycle, residuum underpressure distillation, the cut that collection vacuum tightness is 8-10Kpa, temperature is 155-250 DEG C, obtains base oil, and the mass yield of base oil accounts for 89% of supernatant liquor quality;
Described extraction-flocculation-neutralizing agent is the mixture of the aqueous solution of hexanaphthene, Virahol and alkali; The total mass of its cyclohexane and Virahol is 72kg, and hexanaphthene is 54kg, and Virahol is 13.5kg, and the aqueous solution of alkali is the aqueous solution of sodium hydroxide, and quality is 8.0kg, and the massfraction of sodium hydroxide is 15%;
Embodiment 3
The used oil of 16kg is placed in settling bowl, and room temperature natural subsidence one week, gets supernatant liquid; To in the supernatant liquid obtained, add extraction-flocculation-neutralizing agent 64kg, stir after 40 minutes at temperature is 30-40 DEG C, be cooled to normal temperature, leave standstill 24 hours, be extracted-neutralize-flocculate after mixed solution; Filtered by mixed solution after the extraction-neutralization-flocculation obtained, gained filtrate is the mixture containing extraction agent and base oil component; Filtrate carrying out is added thermal distillation, first collect the extraction agent cut of 60-81 DEG C, the i.e. mixture of hexanaphthene and Virahol, for recycle, residuum underpressure distillation, the cut that collection vacuum tightness is 8-10Kpa, temperature is 155-250 DEG C, obtains base oil, and the mass yield of base oil accounts for 87% of supernatant liquor quality;
Described extraction-flocculation-neutralizing agent is the mixture of the aqueous solution of hexanaphthene, Virahol and alkali; The total mass of its cyclohexane and Virahol is 57.6kg, and hexanaphthene is 43.2kg, and Virahol is 14.4kg, and the aqueous solution of alkali is the aqueous solution of potassium hydroxide or sodium hydroxide, and quality is 6.4kg, and the massfraction of potassium hydroxide or sodium hydroxide is 15%.
Used oil described in embodiment 1-3, is the waste oil that jaw crusher and hammer mill produce, is made up of base oil and impurity; Described base oil, be made up of alkane, aromatic hydrocarbons and nitrogenous, sulphur, oxygen organic, the carbonatoms wherein in alkane molecule is 20-40; Described impurity, the chip produced by small molecules hydro carbons, oxide compound, acidic substance, dust, metal friction forms, and wherein small molecules hydro carbons, oxide compound and acidic substance are that organism in machine oil is owing to using the product causing carbochain oxidation scission in hot environment;
Described supernatant liquid, is made up of base oil and small molecules hydro carbons, oxide compound and acidic substance, and wherein small molecules hydro carbons, oxide compound and acidic substance are that organism in machine oil is owing to using the product causing carbochain oxidation scission in hot environment.
The base oil of embodiment 4 pairs of embodiment 1-3 regeneration detects, and result is as follows:
Kinematic viscosity is 54.21-57.84mm2.s, and acid number is 0.022-0.026mgKOH/g, and zero pour-17 is to-19 DEG C.Light yellow.
From above-mentioned detected result: adopt the base oil that preparation method of the present invention regenerates, yield is up to more than 85%, and colourity is good, acid number is low, and environmental pollution is few, have obvious economy and environment benefit, the present invention can solve the problem of regenerating waste oil difficulty.

Claims (4)

1. a method for regenerating waste oil base oil, is characterized in that, comprises following step:
(1) sedimentation
Used oil is placed in settling bowl, and room temperature natural subsidence one week, gets supernatant liquid;
(2)-neutralization-flocculation is extracted
Add extraction-flocculation-neutralizing agent in the supernatant liquid obtained in step (1), stir 30-50 minute at temperature is 30-40 DEG C after, be cooled to normal temperature, leave standstill 24 hours, be extracted-neutralize-flocculate after mixed solution;
(3) mixed solution (2) obtained filters, and gained filtrate is the mixture containing extraction agent and base oil component;
(4) filtrate the carrying out that (3) obtain is added thermal distillation, first collect the extraction agent cut of 60-81 DEG C, residuum underpressure distillation, the cut that collection vacuum tightness is 8-10Kpa, temperature is 155-250 DEG C, obtain base oil, the mass yield of base oil accounts for the 85-89% of supernatant liquor quality;
Described used oil, is the waste oil that jaw crusher and hammer mill produce, is made up of base oil and impurity; Described base oil, be made up of alkane, aromatic hydrocarbons and nitrogenous, sulphur, oxygen organic, the carbonatoms wherein in alkane molecule is 20-40; Described impurity, the chip produced by small molecules hydro carbons, oxide compound, acidic substance, dust, metal friction forms, and wherein small molecules hydro carbons, oxide compound and acidic substance are that organism in machine oil is owing to using the product causing carbochain oxidation scission in hot environment;
Described supernatant liquid, is made up of base oil and small molecules hydro carbons, oxide compound and acidic substance, and wherein small molecules hydro carbons, oxide compound and acidic substance are that organism in machine oil is owing to using the product causing carbochain oxidation scission in hot environment;
The cut of described 60-81 DEG C is the mixture of hexanaphthene and Virahol.
2. the method for a kind of regenerating waste oil base oil according to claims 1, is characterized in that, the described add-on of extraction-flocculation-neutralizing agent and the mass ratio 3-5:1 of used oil.
3. the method for a kind of regenerating waste oil base oil according to claims 1 and 2, is characterized in that, described extraction-flocculation-neutralizing agent is the mixture of the aqueous solution of hexanaphthene, Virahol and alkali; The massfraction that the aqueous solution of alkali accounts for mixture is 10%; The aqueous solution of alkali is the aqueous solution of potassium hydroxide or sodium hydroxide, and the massfraction of potassium hydroxide or sodium hydroxide is 15%.
4. the method for a kind of regenerating waste oil base oil according to claims 1 and 3, is characterized in that, the mass ratio of described hexanaphthene and Virahol is 3:1.
CN201510883850.5A 2015-12-07 2015-12-07 A kind of method of regenerating waste oil base oil Expired - Fee Related CN105316099B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778990A (en) * 2016-04-21 2016-07-20 廖莱 Process for refining clean fuel and lubricant base oil based on waste engine oil
CN106336939A (en) * 2016-08-29 2017-01-18 济南亿诺再生资源有限公司 Refining technique of base oil regenerated from used lubrication oil
CN107312612A (en) * 2017-07-19 2017-11-03 沈阳永润石油制品有限公司 A kind of processing method of used oil recycling
CN108085121A (en) * 2017-12-22 2018-05-29 常州菲纳斯能源科技有限公司 Waste lubricant oil regeneration and the processing method for recycling aromatic hydrocarbons
KR102085351B1 (en) * 2019-07-08 2020-03-05 이종호 Method for Producing Heating Oils Using Waste Oils
CN113004941A (en) * 2021-04-01 2021-06-22 厦门市汉臻能源科技有限公司 Industrial purification method of waste engine oil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102660375A (en) * 2012-05-09 2012-09-12 重庆现代石油(集团)有限公司 Method for regenerating waste lubricating oil
CN104498174A (en) * 2015-01-04 2015-04-08 吴江华威特种油有限公司 Regeneration method of waste lubrication oil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102660375A (en) * 2012-05-09 2012-09-12 重庆现代石油(集团)有限公司 Method for regenerating waste lubricating oil
CN104498174A (en) * 2015-01-04 2015-04-08 吴江华威特种油有限公司 Regeneration method of waste lubrication oil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778990A (en) * 2016-04-21 2016-07-20 廖莱 Process for refining clean fuel and lubricant base oil based on waste engine oil
CN106336939A (en) * 2016-08-29 2017-01-18 济南亿诺再生资源有限公司 Refining technique of base oil regenerated from used lubrication oil
CN107312612A (en) * 2017-07-19 2017-11-03 沈阳永润石油制品有限公司 A kind of processing method of used oil recycling
CN108085121A (en) * 2017-12-22 2018-05-29 常州菲纳斯能源科技有限公司 Waste lubricant oil regeneration and the processing method for recycling aromatic hydrocarbons
KR102085351B1 (en) * 2019-07-08 2020-03-05 이종호 Method for Producing Heating Oils Using Waste Oils
CN113004941A (en) * 2021-04-01 2021-06-22 厦门市汉臻能源科技有限公司 Industrial purification method of waste engine oil

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