CN102827681A - Waste hydraulic oil regeneration technology - Google Patents

Waste hydraulic oil regeneration technology Download PDF

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Publication number
CN102827681A
CN102827681A CN2012102716360A CN201210271636A CN102827681A CN 102827681 A CN102827681 A CN 102827681A CN 2012102716360 A CN2012102716360 A CN 2012102716360A CN 201210271636 A CN201210271636 A CN 201210271636A CN 102827681 A CN102827681 A CN 102827681A
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CN
China
Prior art keywords
hydraulic oil
waste hydraulic
oil
waste
regeneration
Prior art date
Application number
CN2012102716360A
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Chinese (zh)
Inventor
任天辉
樊雪英
李志鹏
王林
陈立新
何晓燕
Original Assignee
上海宝钢废旧油处理有限公司
上海交通大学
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Application filed by 上海宝钢废旧油处理有限公司, 上海交通大学 filed Critical 上海宝钢废旧油处理有限公司
Priority to CN2012102716360A priority Critical patent/CN102827681A/en
Publication of CN102827681A publication Critical patent/CN102827681A/en

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Abstract

The invention discloses a waste hydraulic oil regeneration technology which comprises the following steps that the waste hydraulic oil is sequentially roughly filtered to remove impurities, the waste hydraulic oil which is roughly filtered is heated to 60-80 DEG C, and the heated waste hydraulic oil is finely filtered; the average pore size of a strainer of the rough filtration process is between 74 and 1055 micrometers, and the average pore sizes of a strainer of the fine filtration process is between 5 and 105 micrometers; the processed waste hydraulic oil is heated for the second time to 80-150 DEG C, and is then subjected to vacuum purification, and the obtained waste hydraulic oil is delivered to a chromatographic column which is filled with argil or coal ash, to perform decoloration and impurity removal; and an additive is added to the obtained waste hydraulic oil for blending under the mixing condition at the temperature of 40-60 DEG C, so the regeneration hydraulic oil is obtained. Compared with the conventional argil agitation decolorization technology, through adopting a chromatographic decolorization purification technology, the technology has a better decolorization effect, and also has a purification function; and moreover, the treatment technology is simple, does not need to separate argil, and generates less three wastes.

Description

A kind of waste hydraulic oil reclaiming process
Technical field
The present invention relates to the energy-conserving and environment-protective field, specifically is a kind of waste lubricating oil treatment technology, i.e. waste hydraulic oil reclaiming process.
Background technology
According to State Statistics Bureau's data, Chinese oil production reached 8,260,000 tons in 2011, increased by 7% on a year-on-year basis.Hydraulicefficiency oil is a kind of in the lubricating oil, is the high-value product in the oil product, is mainly used in hydrostatic transmission and the system, as the medium of transmission ofenergy.Hydraulicefficiency oil quality quality directly influences the task performance of transmission and system, and according to pertinent literature, hydraulicefficiency system 80% fault is relevant with the pollution of hydraulicefficiency oil.
Along with International Crude Oil climbs up and up, the price of hydraulicefficiency oil also constantly raises up.Therefore, the regeneration to waste hydraulic oil more and more comes into one's own.Hydraulicefficiency oil in use owing to the wear and tear and the corrosion of Hydraulic Elements, reaches the intrusion of introduced contaminants; Produce various particles and liquid pollutant; As can not in time separate, the wearing and tearing of hydraulicefficiency system be can quicken, thereby the normal operation and the work-ing life of equipment influenced.General solution is changed hydraulicefficiency oil exactly at present.According to the ISO4406 international standard, pollute and reach degree of cleaning (ISO4406) grade more than 20/17, promptly be not suitable for continuing working medium as hydraulicefficiency system.And the hydraulicefficiency oil 90% of these replacings can be reused through manipulation of regeneration.Therefore, of crucial importance to the waste hydraulic oil Study on Regeneration.
The purifying regeneration method of waste hydraulic oil mainly is divided into two big types, for the pollution that in use mainly receives introduced contaminants, but very little one type of deterioration by oxidation degree own, adopts the purifying method of pure physics more, removes impurity, and purifying back oil can use; Then need adopt chemical process to purify for pollution level and all more serious waste oil of degree of oxidation, make it to become the regeneration base oil, according to the destruction situation of former additive, concoct again.
The physical cleaning method comprises filtration method, electrostatic adhesion, vacuum hydro-extraction gas, spinning, Magnetic filtration device etc.Select above-mentioned a certain purifying method or several method comprehensively to use targetedly according to the hydraulic oil pollution situation, can receive good decontamination effect improving for slight rotten hydraulicefficiency oil.
Yet the physical cleaning method can only be to control " table " can not control " lining ", and the rotten present the best way of waste hydraulic oil of severe oxidation is still chemical treatment method.The most traditional chemical treatment method that also the most often adopts is sulfuric acid-clay-filtered reclaiming process; Promptly adopt the vitriol oil to mix with waste hydraulic oil; Remove through reaction and to contain oxygen, nitrogenous and sulfur compound impurities in deoiling, with in addition refining with adsorbents of carclazyte, become base oil then.But this method produces acid sludge to be polluted, and the production cycle is long again, is eliminated gradually.IFP (Institute France Petroleum) is a kind of technology of France's exploitation.The pre-treatment of at first dewatering, then with the propane extracting to remove the most of impurity in the waste oil, carry out sulfuric acid again--clay-filtered, like this than sulfuric acid--the yield of clay-filtered raising about 10%.Snamprogetti is a kind of reclaiming process of Italian Snamprogetti company exploitation; Be characterized in adopting twice propane extracting through after dehydration and the removing light oil pre-treatment, the volume ratio of propane and waste hydraulic oil is less for the first time; Strengthen the propane amount through vacuum distilling after the extracting; Carry out the secondary extracting, and then through hydrotreatment, the color of the base oil of generation and acidifying stability are all relatively good.The U.S. has developed thin film evaporation technology.Pre-treatment is dehydration, earlier through the low underpressure distillation dehydration of film, and desolventizing, other impurity is sloughed in high underpressure distillation through film type again.Twice distillatory result is the regeneration base oil that produces a kind of cut.The Recylon method is to adopt the sodium Metal 99.5 of finely powdered to dispose waste liquid to press oil, is converted into sodium salt to oxide compound in the oil and additive, and this sodium salt boiling point is higher, can use distillating method it and separating of oil.
There are two common issue with in present various waste oil purifying regeneration technologies: the one, and complex process, cost is high, and equipment is huge, and investment is big; The 2nd, the objectionable impurities of generation contaminate environment.
Summary of the invention
Deficiency to prior art; The present invention proposes a solution; Can finely remove the solid impurity in the waste hydraulic oil, also can remove fluid contaminants wherein simultaneously, like some polar materials of moisture and oxicracking generation; This method adopts column chromatography technology that waste hydraulic oil is handled regeneration, and adopts the electronics chromascope to monitor in real time.
Technical scheme of the present invention is: a kind of waste hydraulic oil reclaiming process, waste hydraulic oil are specifically passed through filtering and impurity removing, oil vacuum cleaning, the look removal of impurities of post pull-up and mediation, obtain regeneration hydraulic pressure oil prodn, and concrete steps are:
(1) waste hydraulic oil is carried out coarse filtration elimination impurity wherein successively, will be heated to 60-80 ℃ through the waste hydraulic oil of coarse filtration then, the waste hydraulic oil that will heat again carries out fine filtering; The filter screen mean pore size is at 74-105 μ m in the coarse filtration operation, and the filter screen mean pore size is 5-10 μ m in the fine filtering operation;
(2) will carry out second-heating through the waste hydraulic oil that handled step (1) to 80-150 ℃; Carry out oil vacuum cleaning then; Again the gained waste hydraulic oil is transported to the removal of impurities of decolouring in the chromatography column that is filled with carclazyte or flyash, accomplishes the waste hydraulic oil of decolouring removal of impurities, store for future use;
(3) step (2) gained waste hydraulic oil is added additive under 40-60 ℃, agitation condition and be in harmonious proportion, promptly get the hydraulicefficiency oil of regenerating.
Carclazyte or flyash are the 80-120 order described in the step (2).
Further, the present invention adopts electronics chromascope detection probe to monitor the regeneration hydraulic pressure oil colours degree that removal of impurities is handled through post pull-up look in real time, when regeneration hydraulic pressure oil colours degree is reduced to lower value, switches chromatography column to realize continuous processing.Filler is subsequent use again through behind the cleaning, drying for the inefficacy cylinder.
Coarse filtration process using common process among the present invention; Can remove the bigger solid impurity of waste hydraulic oil mesoscale; Step (1) heating process that adopts can reduce the viscosity of waste hydraulic oil, strengthens flowability, is convenient to pipe-line transportation and helps fine filtering technology carry out; And the fine filtering technology that adopts also for common process, can remove the less solid impurity of waste hydraulic oil mesoscale; Second-heating is to prepare for oil vacuum cleaning technology and post pull-up look technology in the step (2); Make waste hydraulic oil reach the temperature and the further increase flowability of absolute oil processing requirement; Post pull-up look technology is carried out smoothly; Oil vacuum cleaning technology can be removed moisture and the lower-boiling impurity that contains in the waste hydraulic oil, improves product quality; Last mediation technology can obtain meeting the hydraulicefficiency oil product of GB with the gained hydraulicefficiency oil of regenerating through allotment.
Center pillar pull-up look technology of the present invention is the novel process of innovative design.Different with traditional decoloration process is: the post pull-up look impurity removal process that the present invention adopted is a utilization column chromatography principle, is moving phase with pending hydraulicefficiency oil, and carclazyte or flyash are quiet phase; Not only reaching tradition utilizes carclazyte to stir the effect of decolouring; And, can further remove the minimum granule foreign of oil plant mesoscale because the filler carclazyte forms dense structure in chromatography column, have impurity-eliminating effect concurrently; Treating processes is simply efficient, and regeneration hydraulicefficiency oil reaches higher quality.
The present invention has following advantage owing to adopt post pull-up look impurity removal process:
1. stir decoloration process with traditional carclazyte and compare, have better decolorizing effect, have the removal of impurities effect simultaneously concurrently, and treatment process is simple, need not to separate carclazyte again, the three wastes are few;
2. post pull-up look knot screen is simple in structure, is applicable to existing waste oil regeneration equipment is carried out upgrading, and is with low cost.
Embodiment
Below the present invention will be described with specific embodiment, but do not limit use range of the present invention.
Embodiment:
Use the method for the invention, to certain waste oil reclaim company waste oil carry out purifying regeneration.
(1) waste hydraulic oil is carried out coarse filtration elimination impurity wherein successively, will be heated to 70 ℃ through the waste hydraulic oil of coarse filtration then, the waste hydraulic oil that will heat again carries out fine filtering; The filter screen mean pore size is at 80 μ m in the coarse filtration operation, and the filter screen mean pore size is 10 μ m in the fine filtering operation;
(2) will carry out second-heating to 100 ℃ through the waste hydraulic oil that handled step (1); Carry out oil vacuum cleaning then and remove moisture and lower-boiling impurity; Again the gained waste hydraulic oil is transported to the removal of impurities of decolouring in the chromatography column that is filled with carclazyte or flyash; Accomplish the waste hydraulic oil of decolouring removal of impurities, store for future use;
(3) step (2) gained waste hydraulic oil is added additive under 60 ℃, agitation condition and be in harmonious proportion, promptly get the hydraulicefficiency oil of regenerating.
Table 1 is the part index number contrast of hydraulicefficiency oil before and after the regeneration.
Table 1
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment.So everyly do not break away from the equivalence of accomplishing under the disclosed spirit of the present invention or revise, all fall into the scope of the present invention's protection.

Claims (3)

1. a waste hydraulic oil regeneration new process is characterized in that, may further comprise the steps:
(1) waste hydraulic oil is carried out coarse filtration elimination impurity wherein successively, will be heated to 60-80 ℃ through the waste hydraulic oil of coarse filtration then, the waste hydraulic oil that will heat again carries out fine filtering; The filter screen mean pore size is at 74-105 μ m in the coarse filtration operation, and the filter screen mean pore size is 5-10 μ m in the fine filtering operation;
(2) will carry out second-heating through the waste hydraulic oil that handled step (1) to 80-150 ℃; Carry out oil vacuum cleaning then; Again the gained waste hydraulic oil is transported to the removal of impurities of decolouring in the chromatography column that is filled with carclazyte or flyash, accomplishes the waste hydraulic oil of decolouring removal of impurities, store for future use;
(3) step (2) gained waste hydraulic oil is added additive under 40-60 ℃, agitation condition and be in harmonious proportion, promptly get the hydraulicefficiency oil of regenerating.
2. the described waste hydraulic oil regeneration new process of claim 1 is characterized in that, carclazyte or flyash are the 80-120 order described in the step (2).
3. the described waste hydraulic oil regeneration new process of claim 1; It is characterized in that; Adopt electronics chromascope detection probe to monitor the regeneration hydraulic pressure oil colours degree that removal of impurities is handled through post pull-up look in real time, when regeneration hydraulic pressure oil colours degree is reduced to lower value, switch chromatography column to realize continuous processing.
CN2012102716360A 2012-08-01 2012-08-01 Waste hydraulic oil regeneration technology CN102827681A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103194308A (en) * 2013-04-11 2013-07-10 支柏青 Method for preparing regenerated base oil by using waste oil
CN103849455A (en) * 2014-03-05 2014-06-11 重庆工商大学 Method of reproducing lightly-degraded lubricating oil
CN103865627A (en) * 2014-03-11 2014-06-18 重庆工商大学 Method for recycling waste steam turbine oil
CN104479730A (en) * 2014-11-26 2015-04-01 上海大学 Compound metal oxide decoloring agent for waste mineral oil and decoloring method thereof
CN105754706A (en) * 2016-04-26 2016-07-13 上海应用技术学院 Method for regenerating waste rolling oil
CN108467774A (en) * 2018-03-21 2018-08-31 云南新昊环保科技有限公司 A kind of method of used oil contaminant recovery processing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1335380A (en) * 2000-07-20 2002-02-13 广东省电力工业局试验研究所 Method of regenerating degraded oil for electric power equipment
CN1616615A (en) * 2004-09-29 2005-05-18 上海宝钢废旧油处理站 Parifying and regenerating process for high and medium viscosity waste oils

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1335380A (en) * 2000-07-20 2002-02-13 广东省电力工业局试验研究所 Method of regenerating degraded oil for electric power equipment
CN1616615A (en) * 2004-09-29 2005-05-18 上海宝钢废旧油处理站 Parifying and regenerating process for high and medium viscosity waste oils

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103194308A (en) * 2013-04-11 2013-07-10 支柏青 Method for preparing regenerated base oil by using waste oil
CN103849455A (en) * 2014-03-05 2014-06-11 重庆工商大学 Method of reproducing lightly-degraded lubricating oil
CN103865627A (en) * 2014-03-11 2014-06-18 重庆工商大学 Method for recycling waste steam turbine oil
CN103865627B (en) * 2014-03-11 2017-11-17 重庆工商大学 A kind of renovation process of waste steam turbine oil
CN104479730A (en) * 2014-11-26 2015-04-01 上海大学 Compound metal oxide decoloring agent for waste mineral oil and decoloring method thereof
CN105754706A (en) * 2016-04-26 2016-07-13 上海应用技术学院 Method for regenerating waste rolling oil
CN108467774A (en) * 2018-03-21 2018-08-31 云南新昊环保科技有限公司 A kind of method of used oil contaminant recovery processing

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