CN1616615A - Parifying and regenerating process for high and medium viscosity waste oils - Google Patents
Parifying and regenerating process for high and medium viscosity waste oils Download PDFInfo
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Abstract
The present invention relates to the utilization of waste resource, and especially the regeneration and utilization of mixed waste oil of high and medium viscosity. The purification and regeneration process of waste oil of high and medium viscosity includes the following steps: natural deposition and rough filtration; heating for flocculation and deposition; three stages of pre-treatment including the secondary filtering; low temperature and high vacuum dewatering and fine filtering; inspection, etc. Through the purification and regeneration process, the produced oil product may reach the standard of new oil product.
Description
Technical field
The present invention relates to the development and use of waste and old resource, be specifically related to regeneration the waste and old oil of mixed type of mixed type waste and old oil, particularly medium-high viscosity.
Background technology
General manufacturing enterprise all can produce a certain amount of waste and old oil, and the waste and old oil mass of large-lot producer generation in a year is considerable, and as above the Hypon steel will produce the waste and old oil of thousands of tons of every year.(kinematic viscosity is at 100mm for low viscosity wherein
2/ s is following) waste and old oil treatment technology still ripe.(kinematic viscosity is at 100-460mm but to the waste and old oil of wherein medium-high viscosity
2Between/the s), because of its viscosity and density are bigger, lack sophisticated treatment process, can only after simple processing treatment, make the inferior grade oil product for a long time and use, can't reach high-caliber regeneration.This is not only a kind of waste economically, also may cause the pollution to environment.
Summary of the invention
The objective of the invention is to propose the purifying regeneration technology of the waste and old oil of a kind of medium-high viscosity, can carry out the purifying regeneration processing by the full-bodied waste and old oil of centering by this technology, so that it can reach the quality standard near new medium-high viscosity oil.
Because waste and old oil viscosity height, density as the medium-high viscosity of process object of the present invention are big, impurity wherein is difficult for precipitation, a cover includes natural subsidence and coarse filtration, sedimentation, the three grades of pre-treatment of secondary filtration of wadding a quilt with cotton with fixed attention of heating so designed in treatment process, and the efficient treatment process of dehydration of low temperature high vacuum and smart filter is in interior waste and old oil purification reclaiming process.Now design main points of the present invention are described below:
One, stock oil
Stock oil of the present invention is the waste and old oil that reclaims, they are bigger because of recycling channel difference nature difference, wherein mixed the thick oil after the multiple use, as waste hydraulic oil, useless gear oil, useless bearing wet goods, wherein, then contain considerable metal filings in the useless gear oil as may be moisture more in the waste hydraulic oil.When designing purifying regeneration technology of the present invention, be foundation with the statistical value of the test data of the waste and old oil of medium-high viscosity that reclaims from this enterprise in for some time.
Two, sedimentation
Sedimentation is a method of utilizing the density difference of water and impurity and oil that moisture content and mechanical impurity are separated from waste and old oil.When the diameter of mechanical impurity particle that suspends in the oil and water droplet during at 0.5～10 μ m, can adopt natural subsidence, its settling velocity is obeyed Stokes'theorem.
Oil viscosity is bigger, and the impurity sedimentation is just more difficult.So will suitably heat to reduce its viscosity and density for viscosity and all bigger medium-high viscosity oil of density, accelerate the settling velocity of impurity.Heat and be advisable with 70-90 ℃ because oil viscosity varying with temperature below 80 ℃ very fast, then vary with temperature more than 80 ℃ slower, and too high oxidation stain, the quality of influence oil of causing easily of oil temperature.Settling time is directly proportional with effect of settling, and the settling time is long more, and the effect of removing impurity is good more, so the settling time should be less than 8 hours.Sedimentation can be with vertical tank or horizontal tank, and the normal cylindrical tank that has tapered bottom that adopts of slurry tank is jar high more, and required time of the whole sedimentations of mechanical impurity is just long more, thus for the waste and old oil of medium-high viscosity, should with diameter greatly, highly little slurry tank.The diameter of general column part is got (1～2) with the ratio of height: 1.Slurry tank used water steam coil or electric heater unit heat, and should stop heating after being heated to certain temperature, influence sedimentation in order to avoid produce thermal convection.In addition, slurry tank should have good heat insulation effect.
Three, flocculation
Only still be difficult to the mechanical impurity in the waste and old oil is eliminated,, form disperse phase because many solids are dispersed in the oil with the colloid form with mechanical separation methods such as sedimentation, filtrations.The particle of disperse phase is very little, can see through the hole of filtering material, can not be separated by gravity.Therefore, must take more efficient methods, the method that flocculation comes to this.
The principle of flocculation is: because the impurity particle that is dispersed in the oil with the colloid form has similar electric charge, thereby have electrical forces that repels each other and the universal gravitation of inhaling mutually between particle simultaneously.Only under these charged situations of particle looses institute, these particles are realized in conjunction with cohesion.Its method is to add flocculation agent in containing the oil product of impurity, and the charged particle of flocculation agent and well cuts produces a kind of physics chemical action, and interparticle electrical forces neutralizes.Flocculation can be removed the solid impurity that is dispersed in the waste and old oil, comprises bituminous matter and asphaltous acid that carbon granule, metal filings and deep oxidation produce.Adopt alkaline flocculation agent,, also have chemical neutralizing effect simultaneously, the acid number of waste and old oil is descended as soda ash solution or water glass solution.Normal and the mechanical separation method of flocculation share, and for example flocculation-sedimentation-filtration etc. are to obtain better decontamination effect improving.
Factors such as the add-on of flocculation agent, temperature, mixing time can both influence the effect of flocculation.Generally can add 3.5-5.5%, concentration and be 10% soda ash solution in content of impurities is the waste and old oil of 0.1-0.2%, be that best flocculating effect was arranged in 4～5% o'clock in add-on.
Four, filter
Filtration is the filtration medium that waste and old oil is made by porous material, the method that solid impurity is wherein separated from oil.Make waste and old oil relevant with the resistance of filtration medium, because of the waste and old oily resistance of medium-high viscosity is bigger, so will utilize pump or vacuum to drive by the method for filtration medium.
Filtration medium difference and duct vary in size, its filtration capacity difference, but the solid impurity particulate size of detention is also different.Whether easily strainer should be selected according to the lower limit of required detention impurity particle diameter, consider the resistance size of filtering material, problem such as obstruction simultaneously.Concerning this technology, coarse filtration is carried out at big impurity, and filtration medium can adopt the simple and easy wire cloth or the polyester foam of low cost, long service life; Secondary filtration is at the impurity of 5～10 μ m, it is comparatively suitable that filtration medium adopts cellulosic asbestos and close wire cloth, and smart filter then is at the impurity below the 5 μ m, and filtration medium should adopt close interlacing dot wire cloth, after the essence filter, the content of impurities in the oil is below 0.02%.
Because filtration velocity and oil viscosity are inversely proportional to, in order to obtain rational filtration velocity, when filtering the waste and old oil of high viscosity, to select suitable oil temperature, oily temperature should be got 60～90 ℃ and is advisable, and is good with 80 ℃.
Five, low temperature high vacuum dehydration
In this technology, vacuum hydro-extraction is a very important operation.This process using in recent years the exploitation low temperature high vacuum thin film evaporation technology, evaporative process is to carry out under higher vacuum tightness, vacuum tightness is got 0.075～0.08MPa, temperature is got 60～75 ℃.Have the advantage that temperature is low, the residence time is short and steam output is big, its water separation capability can reach between 1.0～1.5kg/h, after this operation, substantially can the moisture removal in the oil is clean, and as the situation of garlic occurring not reaching as yet, can repeat dehydration and smart filter operation to up to standard.
According to above-mentioned analysis and lot of experiment validation, the purifying regeneration technology of the waste and old oil of a kind of medium-high viscosity of the present invention, its technical process is:
(1) natural subsidence and coarse filtration-waste and old oil is injected slurry tank, through the above natural sedimentation of 24h, get rid of impurity and free-water that jar end is settled out, with the vertical slurry tank of waste and old oil input on slurry tank upper strata, at normal temperatures big impurity in the oil product after the sedimentation is carried out coarse filtration then;
(2) heat flocculating settling-with the waste and old oil after coarse filtration is introduced and is equipped with in the slurry tank of heating unit and attemperator, adds an amount of flocculation agent, and sedimentation is more than 8 hours after the flocculation of heating;
(3) the waste and old oil of secondary filtration-will be after flocculating settling is handled, the back of heating is by the three-stage filtration net, and emphasis carries out secondary filtration to the impurity of 5～10 μ m;
(4) dehydration of low temperature high vacuum and smart filter purification-employing high efficient cryogenic high vacuum oil conditioner carry out low temperature molecular distillation dehydration to the waste and old oil behind secondary filtration, and by 5 μ m ultrafiltrations, remove moisture residual in the waste and old oil and mechanical impurity;
(5) check-oil product after above-mentioned processing is carried out quality test confirms that it has reached the quality standard of the self-cleaning oil of regulation, just become purifying regeneration oil, as below standard, can repeat dehydration and filter operation to up to standard with essence.
In purifying regeneration oil, add various additives, just can be formulated into required processed oil.
Beneficial effect of the present invention is: the waste and old oil of the medium-high viscosity of recovery, through after the purifying regeneration art breading of the present invention on the key technical indexes, can reach or the approaching standard of oil product newly, can be used as new oil product or mix use with new oil product, thereby realized the regeneration of waste and old oil, both improved economic benefit of enterprises, reduced pollution again environment.
Description of drawings
Fig. 1. be the purification process schema of the waste and old oil of mixed type of the present invention.
Wherein: 1 stock oil; 2 natural subsidence and coarse filtration; 3 flocculating settlings; 4 secondary filtrations; 5 vacuum hydro-extractions and smart filter; 6 checks, qualified? 7 self-cleaning oils.
Embodiment
Purifying regeneration technical process of the present invention as shown in Figure 1.
Now the invention will be further described in conjunction with an embodiment and process flow sheet.
The 1st frame: the waste and old oily raw material of recovery
The waste and old oil of the recovery of indication of the present invention is meant and mixed multiple thick oil, and as the waste and old oil of recovery of waste hydraulic oil, useless gear oil, useless bearing wet goods, they are because of the recycling channel difference, and nature difference is bigger.Stock oil of the present invention is the waste and old oil that is reclaimed by this enterprise, its raw data adopts the statistical value of the test data of the waste and old oil of all recovery in for some time, promptly, regulate according to its fluctuation range with practical situation aborning with the following foundation that is limited to of mean value.
The essential property of the waste and old oil of medium-high viscosity of the present invention sees Table 1:
Table 1
| Project | Physical and chemical index | Test method |
| Kinematic viscosity (40 ℃), mm 2/s | Be not less than 100 | ????GB-T?265-88 |
| Water content, % | Be not less than 1.0 | ????GB-T?260-88 |
| Content of impurities, % | Be not less than 0.5 | ????GB-T?511-88 |
Second frame: pre-treatment 1-natural subsidence and coarse filtration
Stock oil is injected 10m
3Big slurry tank in, through the natural subsidence more than 24 hours, mainly in order to separate diameter at bigger suspension mechanical impurity particle and water droplet, behind the impurity and free-water that the eliminating jar end is precipitated out, the oil product on big slurry tank upper strata is imported vertical slurry tank, adopting simple and easy metallic sieve or polyester foam is filtration medium, at normal temperatures the oil product after the sedimentation is carried out coarse filtration.
The 3rd frame: the pre-treatment 2-flocculating settling of heating
Waste and old oil after coarse filtration introduced is equipped with in the slurry tank of heating unit and attemperator, in waste and old oil, add 3.5-5.5%, concentration is 10% soda ash solution, at 80 ℃ of following flocculating settlings more than 8 hours; Actual measurement is after flocculation treatment, and mechanical impurity can be before flocculate 0.52% drops to 0.08% after the flocculation; In add-on is that best flocculating effect was arranged in 4～5% o'clock.
The 4th frame: pre-treatment 3-secondary filtration
With the waste and old oil after the sedimentation, secondary filtration is carried out by having the interweave three-stage filtration net of wire cloth and 10 μ m papery filter cores of 80 orders, 200 orders in the back of heating, and further removes moisture in the waste and old oil and the impurity of 5～10 μ m, and the elimination throw out.
The 5th frame: dehydration of low temperature high vacuum and smart filter purify
Adopt high efficient cryogenic high vacuum oil conditioner, to carry out low temperature molecular distillation dehydration through pretreated oil product, reprocess fibre matter asbestos or fine groove wire cloth carry out 5 μ m ultrafiltrations to be handled, and removes moisture residual in pretreated oil product and mechanical impurity more up hill and dale.
The 6th frame: check
Oil product after above-mentioned processing is carried out quality test, confirm that it has reached the quality standard of the self-cleaning oil of regulation, as below standard, the dehydration that can repeat the 5th frame is extremely up to standard with smart filter operation.
Measured data shows, with after this art breading, moisture content drops near " nothing " from about 1.0%, and the content of its mechanical impurity is also reduced to below 0.02% from 0.5%, and waste and old oil reaches or fully near the purity of fresh oil.
The 7th frame: will can be made into various processed oils after self-cleaning oil and the certain proportion of additive blending.Example is mixed into diesel engine oil, gear oil, bearing oil.
The quality index of the 220# industrial gear oil that is mixed into and this target level of product quality relatively see Table 2.
Table 2
| Project | Quality standard | Tempered oil actual measurement index | Test method |
| Kinematic viscosity (40 ℃), mm 2/s | 198～242 | ????226.4 | ????GB/T?265 |
| Moisture, % | Be not more than vestige | Do not have | ????GB/T?260 |
| Flash-point (opening), ℃ | Be not less than 200 | ????214 | ????GB/T?267 |
| Mechanical impurity, % | Be not more than 0.02 | Do not have | ????GB/T?511 |
| Corrosion test (copper sheet, 100 ℃, 3h), level | Be not more than 1 | ????1a | ????GB/T?5096 |
| Whipability, behind 24 ℃ 93 ℃ of the ml/ml 24 ℃ | Be not more than 75/10 | ? ????0/0 ????25/0 ????20/0 | ????GB/T?12579 |
Claims (8)
1. the purifying regeneration technology of the waste and old oil of medium-high viscosity, its technical process is:
(1) natural subsidence and coarse filtration-waste and old oil is injected slurry tank, through the above natural sedimentation of 24h, get rid of impurity and free-water that jar end is settled out, with the vertical slurry tank of waste and old oil input on slurry tank upper strata, at normal temperatures big impurity in the oil product after the sedimentation is carried out coarse filtration then;
(2) heat flocculating settling-with the waste and old oil after coarse filtration is introduced and is equipped with in the slurry tank of heating unit and attemperator, adds an amount of flocculation agent, and sedimentation is more than 8 hours after the flocculation of heating;
(3) the waste and old oil of secondary filtration-will be after flocculating settling is handled, the back of heating is by the three-stage filtration net, and emphasis carries out secondary filtration to the impurity of 5～10 μ m;
(4) dehydration of low temperature high vacuum and smart filter purification-employing high efficient cryogenic high vacuum oil conditioner carry out low temperature molecular distillation dehydration to the waste and old oil behind secondary filtration, and by 5 μ m ultrafiltrations, remove moisture residual in the waste and old oil and mechanical impurity;
(5) check-oil product after above-mentioned processing is carried out quality test confirms that it has reached the quality standard of the self-cleaning oil of regulation, as below standard, can repeat dehydration and smart filter operation, until up to standard.
2. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, it is characterized in that its raw material oil properties that adopts is: kinematic viscosity (40 ℃ time) is not less than 100mm2/s, water content is not less than 1.0%, and content of impurities is not less than 0.15%.
3. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, it is characterized in that described slurry tank can be with vertical tank or horizontal tank, can adopt diameter greatly, highly little, have the cylindrical tank of boring the end, the diameter of column part is got (1～2) with the ratio of height: 1.
4. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1 is characterized in that the temperature of the described flocculating settling technology of heating is advisable at 60-90 ℃, is good with 80 ℃; Settling time should be less than 8 hours, and slurry tank should have heating unit and attemperator.
5. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1 is characterized in that in described flocculation operation, and adding concentration and be about 10% soda ash solution or 2% water glass solution is flocculation agent, and add-on is 3.5～5.5% of total oil mass.
6. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, filtration medium when it is characterized in that described coarse filtration can adopt simple and easy wire cloth or polyester foam, the interweave three-stage filtration net of wire cloth and 10 μ m papery filter cores of 80 orders, 200 orders can be adopted during secondary filtration, cellulosic asbestos and fine groove wire cloth can be adopted during smart filter.
7. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1 is characterized in that the oily temperature of described secondary filtration technology should remain on 80-110 ℃.
8. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, it is characterized in that in described vacuum hydro-extraction operation, adopt the film under vacuum evaporation technique, evaporative process is that 0.075～0.08Mpa, temperature are to carry out under 60～75 ℃ of conditions in vacuum tightness.
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| CN101613620A (en) * | 2009-07-15 | 2009-12-30 | 牛斌 | A kind of oil purification technology |
| 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 |
| CN102827680A (en) * | 2012-08-01 | 2012-12-19 | 上海宝钢废旧油处理有限公司 | Waste hydraulic oil regeneration equipment |
| CN102827681A (en) * | 2012-08-01 | 2012-12-19 | 上海宝钢废旧油处理有限公司 | Waste hydraulic oil regeneration technology |
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| CN103194308A (en) * | 2013-04-11 | 2013-07-10 | 支柏青 | Method for preparing regenerated base oil by using waste oil |
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| CN104830368A (en) * | 2015-05-11 | 2015-08-12 | 艾斯韦尔工程技术服务（北京）有限公司 | Oil field dehydration device |
| CN104971519A (en) * | 2014-04-09 | 2015-10-14 | 株式会社群桐产业 | Manufacturing method for regeneration heavy oil and manufacturing system thereof |
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- 2004-09-29 CN CN200410066773A patent/CN100575469C/en not_active Expired - Fee Related
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| 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 |
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| CN103074155A (en) * | 2013-02-04 | 2013-05-01 | 佛山市浚丰华环保科技有限公司 | Drainage oil treatment process |
| CN103074155B (en) * | 2013-02-04 | 2014-05-07 | 佛山市浚丰华环保科技有限公司 | Drainage oil treatment process |
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| CN103194308A (en) * | 2013-04-11 | 2013-07-10 | 支柏青 | Method for preparing regenerated base oil by using waste oil |
| CN103285733B (en) * | 2013-06-26 | 2015-12-02 | 贵州兴化化工股份有限公司 | A kind of two-way Application way of wet recycle desulfurization Ethylene recov and device |
| CN103285733A (en) * | 2013-06-26 | 2013-09-11 | 贵州兴化化工股份有限公司 | Two-way utilization method and device for wet process circulation desulfurization recovered solution |
| CN104971519B (en) * | 2014-04-09 | 2017-04-12 | 株式会社群桐产业 | Manufacturing method for regeneration heavy oil and manufacturing system thereof |
| CN104971519A (en) * | 2014-04-09 | 2015-10-14 | 株式会社群桐产业 | Manufacturing method for regeneration heavy oil and manufacturing system thereof |
| CN104531325A (en) * | 2014-12-17 | 2015-04-22 | 南南铝业股份有限公司 | Purification method and equipment for waste hydraulic oil of extruding machine |
| CN104531325B (en) * | 2014-12-17 | 2017-08-29 | 南南铝业股份有限公司 | The purification method and equipment of extruder waste hydraulic oil |
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| CN104830368B (en) * | 2015-05-11 | 2017-03-22 | 艾斯韦尔工程技术服务（北京）有限公司 | Oil field dehydration device |
| CN111321031A (en) * | 2020-04-28 | 2020-06-23 | 王东 | Purification method of waste lubricating oil |
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