CN108659945A - A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion - Google Patents
A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion Download PDFInfo
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- CN108659945A CN108659945A CN201710204033.1A CN201710204033A CN108659945A CN 108659945 A CN108659945 A CN 108659945A CN 201710204033 A CN201710204033 A CN 201710204033A CN 108659945 A CN108659945 A CN 108659945A
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- rolling oil
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0066—Use of electrical and magnetical means
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/04—Working-up used lubricants to recover useful products ; Cleaning aqueous emulsion based
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Fats And Perfumes (AREA)
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Abstract
A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion, including pending emulsion, are heated to 100~150 DEG C first, and emulsion is fully demulsified, water and ROLLING OIL separation, moisture evaporation removal；It is blended into organic solvent dissolving, and controls and is sufficiently stirred under conditions of 30~90 DEG C, forms two-phase mixture；Two-phase mixture is subjected to solid-liquid separation treatment, the amount containing iron powder of the organic solvent after control process is less than 50ppm；Distillation procedure is carried out after operating 2~4 times repeatedly, obtains the recycling ROLLING OIL after heavy constituent；It is put into again used in cold mill complex after finally the recycling ROLLING OIL of acquisition is mixed with original ROLLING OIL.The present invention can effectively filter the impurity iron powder in emulsion；The present invention can be to avoid the discharge of impurity screening iron powder, for recycling；And the process flow of the present invention is easy, cost is relatively low, reduces cost for cold mill complex production, improves benefit and product quality.
Description
Technical field
The present invention relates to a kind of substance separation field more particularly to a kind of cold mill complex breasts applied to cold rolling process
With Magnetic filtration device method come the impurity of filtering emission when changing liquid recycling so that the method that emulsion recycles.
Background technology
Currently, existing cold-rolling mill is in process of production, by rolling efficiency, lumber recovery, yield and manufacturing cost
Comprehensive consideration is generally carried out using cold mill complex emulsion needed for the lubrication of production operation, the emulsion under the prior art
Typically 0.5%~5% ROLLING OIL and 95%~99.5% industrial desalted water mutually match the mixture of mixing, emulsion
It is the suitable important process medium of entire cold rolling production, has directly influenced rolling efficiency and rolling quality.
Due to the ROLLING OIL higher price in emulsion, in order to reduce production cost, cycle can be used in process of production
The mode of recycling re-uses ROLLING OIL, i.e., emulsion can pass through milling train-recycling bins recycling-vacuum mistake successively in production
Filter-Magnetic filtration device-emulsion stirs-excludes miscellaneous oil purification-milling train and uses, this flow uses successively repeatedly.
And even using endless form, a Large Scale Cold milling train can still consume 300~600 tons or so of rolling every year
Oil, other than a small amount of ROLLING OIL adsorbed in belt steel surface, the mainly consumption of the Magnetic filtration device process in above-mentioned steps.It is led
Want the reason is as follows that：
In cold-rolled process, strip and roll will produce a large amount of tiny iron powder in rolling friction process repeatedly and (put down
Equal granularity is about at 1~3 μm), and build up in emulsion, to ensure product quality, therefore the principle of magnetic absorption is utilized,
Iron powder is periodically siphoned away from emulsion, and under the prior art, it is unavoidably had during removing the iron powder of fine particle big
The ROLLING OIL and moisture of amount are sent out together so that intact ROLLING OIL is discarded by artificial in the process, simultaneously because mixed
It is excessively high to close iron powder, water content, such mixture can not also be used as fuel oil to recycle, and the filtrate finally obtained also lacks effectively
Processing means, be only used for raw materials for sintering and be mixed into, or directly fill, also result in the pollution of environment.
And to solve the above-mentioned problems, certain improvement has also been made in the prior art, as follows
The recovery methods of 1.CN94115006.2- waste lubricating oils proposes a kind of to be recycled vehicle lubricating oil
Method, the thought of essential core is to heat the vehicle lubricating oil of recycling, in the case of 204-538 DEG C, lubricating oil
Interior active ingredient can be evaporated, and collected to be mixed into diesel oil and be used as fuel.
But prove by field practice, such method can change the chemical composition of lubricating oil, and for heating after
Residue solid content there are certain requirements (content must be in 5~25%), and contain a large amount of iron powders in cold rolling Magnetic filter impurity, difficult
With with the method processing of this patent.
2.CN200610134148.X- a kind of recoverying and utilizing method of waste lubricating oil proposes a kind of processing of waste lubricating oil
Reuse method, main thought are that waste lubricating oil is filtered abjection solid to be obtained by the reaction then under the conditions of reactor hydrogenation
Then the lubricating oil of preparatory processing again distills the lubricating oil of preparatory processing to obtain refined recycling lubricating oil.
But the method needs are processed lubricating oil with chemical reaction method in reactor, and need in high temperature height
It is carried out under conditions of pressure and catalyst, whole cost is higher, loses more than gain applied in rolling field, and product passes through
After chemical reaction, there is also certain changes for entire chemical property, simultaneously because solid content is too high in Magnetic filter product, it can not
ROLLING OIL, therefore the improper recycling for cold rolling oil are extracted using conventional filtering method.
A kind of process for regeneration of waste lubricating oil of 3.CN 201310170536.3- proposes the side of another recycling waste lubricating oil
Method mainly carries out chemical cleaning to waste oil with highly basic first, and reaction removes the acidic materials in it and obtains a series of solid
Body sediment, then thermal dehydration point, is finally heated to 378 DEG C or so and distills the product being recycled, this product can be used as profit
The base oil of lubricating oil is used as diesel oil additive.
But passes through field practice, it is found that such method is relatively suitble to the recycling of automobile-used waste lubricating oil, because in Magnetic filter product
Solid content it is too high, and ferrous powder granules are superfine, are difficult to effectively be pocessed this fraction solids in distillation, are not suitable for cold rolling
The recycling of ROLLING OIL.
4.CN201210076103.7- the detergent for recycling iron powder in cold rolling mill Magnetic filter, it is proposed that one kind is used for
The chemical agent combination formula for cleaning cold rolling Magnetic filter impurity, can effectively wash the ROLLING OIL in Magnetic filter impurity,
And the residue for obtaining enrichment iron powder obtains iron powder recycling with the processing that is centrifuged at a high speed again and enters iron and steel enterprise's production again.
Although such method can effectively recycle scrap iron powder, the high speed centrifugal finishing used is in industrialized production
Middle cost is high, and the ROLLING OIL for being worth significantly larger than iron powder is discarded, and recycles discarded cleaning solution and be also required to special project
Processing, therefore lead to not applicable problem there is also cost is high.
In conclusion the conventional lubrication oil processing technology under the prior art mainly focuses on the common lubricating oil of recycling, such as
The conventional lubrications such as I. C. engine oil, hydraulic oil and gear mechanism oil oil, needs only to deposit a small amount of solid impurity in these waste liquids, and cold
Impurity screening is rolled to include there are many solid iron powder.From the point of view of technology path, the recovery process of lubricating oil includes mainly distillation-acid
- the technologies such as clay-filtered technique, the clay-filtered technique of sedimentation-pickling-are washed, for the such chemical composition of ROLLING OIL and property
Entirely different product, the prior art can not be handled with conventional lubrication oil.
Therefore now there is an urgent need to a kind of novel impurity iron powder filtration treatment methods that can be used in cold mill complex emulsion, come
Recycle ROLLING OIL and iron powder.
Invention content
In order to solve various problems of the processing of the cold mill complex emulsion under the above-mentioned prior art, the present invention provides one
The Magnetic filter formula impurity treatment method of kind cold mill complex emulsion, can effectively filter the impurity iron powder in emulsion, while can
To avoid the discharge of impurity screening iron powder, cost is reduced for cold mill complex production, improves benefit and product quality.
A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention is as follows described：
A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion, including pending emulsion are specific to walk
It is rapid as follows：
1) pending emulsion is removed into moisture first, specifically, by pending emulsified liquid collection and being heated to
100~150 DEG C so that emulsion is fully demulsified, and water and ROLLING OIL separation, moisture therein reach boiling point, moisture evaporation gone
It removes；
2) organic solvent is used to dissolve above-mentioned steps 1) ROLLING OIL with impurity that treated, specifically, will rolling
60%~150% organic solvent is added in oil by weight proportion, and controls and be sufficiently stirred under conditions of 30~90 DEG C, You Jirong
ROLLING OIL is dissolved in agent, and the ROLLING OIL with impurity at this time forms cold rolling friction iron powder solid and dissolved rolling after being handled
The two-phase mixture of the organic solvent liquid of oil；
3) to above-mentioned steps 2) two-phase mixture that obtains carries out solid-liquid separation treatment after processing, specifically, by above-mentioned
Two-phase mixture controls Adsorption iron powder using magnetic force, it should be noted that the amount containing iron powder of the organic solvent after control process is less than
50ppm；
4) by above-mentioned steps 2) and step 3) operate repeatedly 2~4 times；
6) it will be sent into distillation equipment by above-mentioned step 4) treated organic solvent and carries out distillation procedure, it is specific
For the vapo(u)rizing temperature of distillation equipment is 60~200 DEG C, and pressure is -80~2KPa, is weighed in distillation equipment after distillation procedure
Recycling ROLLING OIL after component；
7) the recycling ROLLING OIL obtained in above-mentioned step 6) puts into cold rolling again after being mixed with original ROLLING OIL
Used in unit, according to weight ratio, the mixed proportion of recycling ROLLING OIL and original ROLLING OIL is 1:10~1:Between 3.
The Magnetic filter formula impurity treatment method of a kind of cold mill complex emulsion according to the present invention, which is characterized in that described
Step 2) in organic solvent be pentane, hexane, petroleum ether, kerosene, light petrol, benzene, toluene, dichloroethylene, dichloromethane,
One in dichloroethanes, chloroform, trichloroethanes, dimethylbenzene, methanol, acetone, methyl ethyl ketone, ethyl acetate, tetrahydrofuran etc.
Kind or several mixtures.
The Magnetic filter formula impurity treatment method of a kind of cold mill complex emulsion according to the present invention, which is characterized in that described
Step 3) in can be used solid-liquid filtration separation method, specifically, by two-phase mixture be sent into mean void diameter 2~12
μm filter membrane be filtered, wherein filter pressure is 0.5~3bar, and the porosity of filter membrane answers between 15%~45%
Note that the amount containing iron powder of the organic solvent after control process is less than 50ppm.
It is obtained using a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention following beneficial to effect
Fruit：
1. a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention, can effectively filter emulsion
In impurity iron powder；
2. a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention, can be to avoid impurity screening iron
The discharge of powder, for recycling；
3. a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention, process flow is easy, at
This is relatively low, reduces cost for cold mill complex production, improves benefit and product quality.
Description of the drawings
Fig. 1 is a kind of particular flow sheet of the Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention.
Specific implementation mode
With reference to the accompanying drawings and examples to a kind of Magnetic filter formula impurity treatment side of cold mill complex emulsion of the present invention
Method is further described.
As shown in Figure 1, a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion, including pending emulsification
Liquid is as follows：
1) pending emulsion is removed into moisture first, specifically, by pending emulsified liquid collection and being heated to
100~150 DEG C so that emulsion is fully demulsified, and water and ROLLING OIL separation, moisture therein reach boiling point, moisture evaporation gone
It removes；
2) organic solvent is used to dissolve above-mentioned steps 1) ROLLING OIL with impurity that treated, specifically, will rolling
60%~150% organic solvent is added in oil by weight proportion, and controls and be sufficiently stirred under conditions of 30~90 DEG C, You Jirong
ROLLING OIL is dissolved in agent, and the ROLLING OIL with impurity at this time forms cold rolling friction iron powder solid and dissolved rolling after being handled
The two-phase mixture of the organic solvent liquid of oil；
3) to above-mentioned steps 2) two-phase mixture that obtains carries out solid-liquid separation treatment after processing, specifically, by above-mentioned
Two-phase mixture controls Adsorption iron powder using magnetic force, it should be noted that the amount containing iron powder of the organic solvent after control process is less than
50ppm；
4) by above-mentioned steps 2) and step 3) operate repeatedly 2~4 times；
6) it will be sent into distillation equipment by above-mentioned step 4) treated organic solvent and carries out distillation procedure, it is specific
For the vapo(u)rizing temperature of distillation equipment is 60~200 DEG C, and pressure is -80~2KPa, is weighed in distillation equipment after distillation procedure
Recycling ROLLING OIL after component；
7) the recycling ROLLING OIL obtained in above-mentioned step 6) puts into cold rolling again after being mixed with original ROLLING OIL
Used in unit, according to weight ratio, the mixed proportion of recycling ROLLING OIL and original ROLLING OIL is 1:10~1:Between 3.
Organic solvent in step 2) is pentane, hexane, petroleum ether, kerosene, light petrol, benzene, toluene, dichloroethylene, two
Chloromethanes, dichloroethanes, chloroform, trichloroethanes, dimethylbenzene, methanol, acetone, methyl ethyl ketone, ethyl acetate, tetrahydrofuran etc.
One or more of mixture.
The method that solid-liquid filtration separation can be used in step 3), specifically, it is straight that two-phase mixture is sent into average void
The filter membrane that 2~12 μm of diameter is filtered, wherein filter pressure is 0.5~3bar, and the porosity of filter membrane is 15%~45%
Between, it should be noted that the amount containing iron powder of the organic solvent after control process is less than 50ppm.
Embodiment
For handling cold mill complex emulsion
1. the described impurity collection is heated to 110 DEG C first, in emulsion demulsification operation, moisture obtains evaporation and goes
It removes；
2. being rich in the mixture of ROLLING OIL and iron powder after processing, 80% organic solvent is added according to mass percent
(dichloroethanes is used in the present embodiment), and control and stirred with blender under the conditions of 60 DEG C, ROLLING OIL is all after a period of time
It is dissolved in dichloroethanes, friction iron powder solid is slowly deposited to solution bottom, and the two is separated into two-phase mixture；
3. being positioned over above-mentioned organic solvent with magnetic absorption device, iron powder is slowly adsorbed, up to iron content to 30ppm
Afterwards, the magnetic devices of absorption are removed then；
Distilled 4. obtained dichloroethanes organic solvent will be handled and be sent into distillation equipment, use control pressure for-
70KPa, temperature control are 50~80 DEG C, obtain recycling ROLLING OIL.
By the recycling ROLLING OIL physical and chemical performance analysis of acquisition, the result such as following table is obtained：
| New product ROLLING OIL | Recycle ROLLING OIL | |
| Saponification number mgKOH/g | 215 | 180 |
| Acid value mgKOH/g | 18 | 16.4 |
| Viscosity mm2/s | 44.3 | 54.2 |
| Density kg/m3 | 922 | 928 |
The basic physicochemical property deck watch of table 1- new products ROLLING OIL and recycling ROLLING OIL
It is as follows from above-mentioned analysis result：
Recycling ROLLING OIL changes greatly in saponification number and viscosity, illustrates that its chemical substance after use in ROLLING OIL obtains
To certain consumption, cause the decline of greasy property, but due in produced on-site control targe saponification number index need to only be more than
160mgKOH/g, so recycling ROLLING OIL is still that can be used with overlapping investment, it is last practical according to 1:5 ratio with it is new
After ROLLING OIL mixing, does not find that basic physicochemical property and lubrication property have significant impact, illustrate that the product of such method has
Recycling uses feasibility, while the method for the present invention is effective.
A kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion of the present invention, can effectively filter in emulsion
Impurity iron powder；The present invention can be to avoid the discharge of impurity screening iron powder, for recycling；And the process flow of the present invention
Simplicity, cost is relatively low, reduces cost for cold mill complex production, improves benefit and product quality.
Claims (3)
1. a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion, including pending emulsion, specific steps
It is as follows：
1) pending emulsion is removed into moisture first, specifically, pending emulsified liquid collection and 100 will be heated to~
150 DEG C so that emulsion is fully demulsified, and water and ROLLING OIL separation, moisture therein reach boiling point, moisture evaporation removed；
2) organic solvent is used to dissolve above-mentioned steps 1) ROLLING OIL with impurity that treated, specifically, ROLLING OIL is pressed
60%~150% organic solvent is added in weight ratio, and controls and be sufficiently stirred under conditions of 30~90 DEG C, and organic solvent will
ROLLING OIL dissolves, and the ROLLING OIL with impurity at this time forms cold rolling friction iron powder solid and dissolved ROLLING OIL after being handled
The two-phase mixture of organic solvent liquid；
3) to above-mentioned steps 2) two-phase mixture that obtains carries out solid-liquid separation treatment after processing, specifically, by above-mentioned two-phase
Mixture controls Adsorption iron powder using magnetic force, it should be noted that the amount containing iron powder of the organic solvent after control process is less than
50ppm；
4) by above-mentioned steps 2) and step 3) operate repeatedly 2~4 times；
6) distillation equipment will be sent by above-mentioned step 4) treated organic solvent and carries out distillation procedure, specifically,
The vapo(u)rizing temperature of distillation equipment is 60~200 DEG C, and pressure is -80~2KPa, is recombinated in distillation equipment after distillation procedure
Recycling ROLLING OIL after point；
7) the recycling ROLLING OIL obtained in above-mentioned step 6) puts into cold mill complex again after being mixed with original ROLLING OIL
Used, according to weight ratio, the mixed proportion of recycling ROLLING OIL and original ROLLING OIL is 1:10~1:Between 3.
2. a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion as described in claim 1, which is characterized in that institute
Organic solvent in the step 2) stated is pentane, hexane, petroleum ether, kerosene, light petrol, benzene, toluene, dichloroethylene, dichloromethane
In alkane, dichloroethanes, chloroform, trichloroethanes, dimethylbenzene, methanol, acetone, methyl ethyl ketone, ethyl acetate, tetrahydrofuran etc.
One or more of mixtures.
3. a kind of Magnetic filter formula impurity treatment method of cold mill complex emulsion as described in claim 1, which is characterized in that institute
Can be used in the step 3) stated solid-liquid filtration separation method, specifically, by two-phase mixture be sent into mean void diameter 2~
12 μm of filter membrane is filtered, wherein filter pressure be 0.5~3bar, the porosity of filter membrane between 15%~45%,
It should be noted that the amount containing iron powder of the organic solvent after control process is less than 50ppm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713326A (en) * | 2019-09-20 | 2020-01-21 | 宁波宝新不锈钢有限公司 | Solid-liquid separation device for rolling oil sludge |
| CN110723874A (en) * | 2019-09-20 | 2020-01-24 | 宁波宝新不锈钢有限公司 | Solid-liquid separation method of rolling oil sludge |
| CN111233243A (en) * | 2020-01-15 | 2020-06-05 | 吴爱义 | Magnetic filter material circulating and regenerating treatment process |
| CN112691789A (en) * | 2020-12-21 | 2021-04-23 | 中冶南方工程技术有限公司 | Cold-rolled emulsion filtering system and method considering multiple series of products |
| CN112892856A (en) * | 2021-01-14 | 2021-06-04 | 武汉乾冶众联科技有限公司 | Cold rolling waste treatment method |
| CN113831956A (en) * | 2020-06-24 | 2021-12-24 | 上海梅山钢铁股份有限公司 | Method for controlling particle size of cold-rolling emulsion |
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| CN103361165A (en) * | 2013-05-30 | 2013-10-23 | 上海宝钢废旧油处理有限公司 | Regenerative equipment and method for waste emulsion produced in steel rolling process |
| CN106281635A (en) * | 2015-05-27 | 2017-01-04 | 宝山钢铁股份有限公司 | A kind of silicon steel cold-rolling emulsion greasy filth reclaims method of purification |
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| JPH10137627A (en) * | 1996-11-08 | 1998-05-26 | Nkk Corp | Iron content removal device of rolling oil |
| CN1579972A (en) * | 2003-08-01 | 2005-02-16 | 首钢总公司 | Method and equipment system for treating oil-containing iron scale for steel rolling |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713326A (en) * | 2019-09-20 | 2020-01-21 | 宁波宝新不锈钢有限公司 | Solid-liquid separation device for rolling oil sludge |
| CN110723874A (en) * | 2019-09-20 | 2020-01-24 | 宁波宝新不锈钢有限公司 | Solid-liquid separation method of rolling oil sludge |
| CN111233243A (en) * | 2020-01-15 | 2020-06-05 | 吴爱义 | Magnetic filter material circulating and regenerating treatment process |
| CN113831956A (en) * | 2020-06-24 | 2021-12-24 | 上海梅山钢铁股份有限公司 | Method for controlling particle size of cold-rolling emulsion |
| CN113831956B (en) * | 2020-06-24 | 2022-10-14 | 上海梅山钢铁股份有限公司 | Method for controlling particle size of cold-rolling emulsion |
| CN112691789A (en) * | 2020-12-21 | 2021-04-23 | 中冶南方工程技术有限公司 | Cold-rolled emulsion filtering system and method considering multiple series of products |
| CN112892856A (en) * | 2021-01-14 | 2021-06-04 | 武汉乾冶众联科技有限公司 | Cold rolling waste treatment method |
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|---|---|
| CN108659945B (en) | 2021-08-17 |
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