CN100575469C - The purifying regeneration technology of the waste and old oil of medium-high viscosity - Google Patents

The purifying regeneration technology of the waste and old oil of medium-high viscosity Download PDF

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Publication number
CN100575469C
CN100575469C CN200410066773A CN200410066773A CN100575469C CN 100575469 C CN100575469 C CN 100575469C CN 200410066773 A CN200410066773 A CN 200410066773A CN 200410066773 A CN200410066773 A CN 200410066773A CN 100575469 C CN100575469 C CN 100575469C
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waste
oil
viscosity
old oil
medium
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CN200410066773A
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Chinese (zh)
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CN1616615A (en
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孙晓峰
葛浩杰
项建中
胡志安
张达春
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上海宝钢废旧油处理站
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Abstract

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.The purifying regeneration technology of the waste and old oil of a kind of medium-high viscosity of the present invention, its technical process comprises the three grades of pre-treatment of sedimentation, (3) secondary filtration of wadding a quilt with cotton with fixed attention of heating of (1) natural subsidence and coarse filtration, (2), and operations such as the efficient treatment process of (4) vacuum hydro-extraction and smart filter and (5) check.Through after the purifying regeneration art breading of the present invention, the waste and old oil of medium-high viscosity that reclaims is 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

The purifying regeneration technology of the waste and old oil of medium-high viscosity

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<100mm during at present, to 40 ℃ 2The waste and old oil treatment technology of the low viscosity of/s is still ripe, but to kinematic viscosity 〉=100-≤460mm 40 ℃ time the wherein 2The waste and old oil of the medium-high viscosity of/s because of its viscosity and density are bigger, still lacks 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, it can the full-bodied waste and old oil of centering carry out purifying regeneration by this technology and handle, so that can reach on the key technical indexes or near the quality standard of medium-high viscosity fresh 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, as waste hydraulic oil, useless gear oil, useless bearing wet goods.Waste and old oil is bigger because of recycling channel difference nature difference, as may be moisture more in the waste hydraulic oil, then contains considerable metal filings in the useless gear 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 8h.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, filtration medium employing cellulosic asbestos and close wire cloth are comparatively suitable, 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 oil conditioner, evaporative process is to carry out under the higher vacuum of 0.075~0.08MPa, temperature is got 60~75 ℃.Has 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, and substantially can the moisture removal in the oil is clean, as still below standard situation occurring, can repeat to dewater with smart filter operation until the requirement that reaches standard code.

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, 40 ℃ of kinematic viscosity 〉=100mm of its stock oil 2/ s, 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, after the flocculation of heating more than the sedimentation 8h;

(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 filtration, 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, evaporative process is that 0.075~0.08MPa, temperature are to carry out under 60~75 ℃ of conditions in vacuum tightness, and, remove moisture residual in the waste and old oil and mechanical impurity by 5 μ m ultrafiltrations;

(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, repeats dehydration and smart filter operation, until the requirement that reaches required standard.

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, 7 self-cleaning oils.

Embodiment

Now the invention will be further described in conjunction with an embodiment and Fig. 1.

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, natural subsidence more than 24h, mainly in order to separate bigger suspension mechanical impurity particle and the water droplet of diameter, 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 big impurity in 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, more than 80 ℃ of following flocculating settling 8h; 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, heat the back by the wire cloth that interweaves by 80 orders, the 200 orders three-stage filtration net that wire cloth and 10 μ m papery filter cores form that interweaves, carry out secondary filtration, further remove 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 the ultrafiltration of 5 μ m impurity to be handled, and removes after the pre-treatment residual moisture and mechanical impurity in the oil product 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.

The 7th frame: make self-cleaning oil

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.To 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/T265 Moisture, % Be not more than vestige Do not have ??GB/T260 Flash-point (opening), ℃ Be not less than 200 ??214 ??GB/T267 Mechanical impurity, % Be not more than 0.02 Do not have ??GB/T511 Corrosion test (copper sheet, 100 ℃, 3h), level Be not more than 1 ??1a ??GB/T5096 Whipability, behind 24 ℃ 93 ℃ of the ml/ml 24 ℃ Be not more than 75/10 ? ??0/0 ??25/0 ??20/0 ??GB/T12579

Claims (9)

1. the purifying regeneration technology of the waste and old oil of medium-high viscosity, the kinematic viscosity 〉=100mm in the time of described waste and old oily 40 ℃ 2/ s, 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, after the flocculation of heating more than the sedimentation 8h;
(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 filtration, 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, evaporative process is that 0.075~0.08MPa, temperature are to carry out under 60~75 ℃ of conditions in vacuum tightness, and, remove moisture residual in the waste and old oil and mechanical impurity by 5 μ m ultrafiltrations;
(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, repeats dehydration and smart filter operation, until the requirement that reaches required 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 waste and old oil properties that adopts is: water content is not less than 1.0%, and content of impurities is not less than 0.5%.
3. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, it is characterized in that the slurry tank described in the step (2) is vertical tank or horizontal tank, the employing diameter is big and highly little and have the cylindrical tank of boring the end, and 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 of step (2) is 60-90 ℃.
5. 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 of step (2) is the best with 80 ℃.
6. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, it is characterized in that in the described flocculation operation of step (2), 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.
7. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1 is characterized in that the add-on of flocculation agent in the described flocculation operation of step (2) is 4~5%.
8. the purifying regeneration technology of the waste and old oil of medium-high viscosity according to claim 1, it is characterized in that the filtration medium when the described coarse filtration of step (1) adopts simple and easy wire cloth or polyester foam, when the described secondary filtration of step (3), adopt by 80 orders wire cloth, the 200 orders three-stage filtration net that wire cloth and 10 μ m papery filter cores form that interweaves that interweaves, when the described essence filter of step (4) operation, adopt cellulosic asbestos and fine groove wire cloth.
9. 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 the described secondary filtration technology of step (3) remains on 80-110 ℃.
CN200410066773A 2004-09-29 2004-09-29 The purifying regeneration technology of the waste and old oil of medium-high viscosity CN100575469C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101613620B (en) * 2009-07-15 2013-04-03 牛斌 Oil purification process
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
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
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
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
CN104004581A (en) * 2013-02-22 2014-08-27 宝山钢铁股份有限公司 Rolled oil sludge purifying method
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
JP5685663B1 (en) * 2014-04-09 2015-03-18 株式会社群桐産業 Recycled heavy oil production method and production system
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
CN104479848B (en) * 2014-12-30 2018-12-18 深圳市东海浪潮工业设计有限公司 A kind of method that waste oil is environmental friendly regenerated
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

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