CN107671107A - One kind paint slag desiccation thermal oxide system - Google Patents
One kind paint slag desiccation thermal oxide system Download PDFInfo
- Publication number
- CN107671107A CN107671107A CN201711013913.7A CN201711013913A CN107671107A CN 107671107 A CN107671107 A CN 107671107A CN 201711013913 A CN201711013913 A CN 201711013913A CN 107671107 A CN107671107 A CN 107671107A
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- Prior art keywords
- slag
- paint
- cylinder
- desiccation
- paint slag
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention discloses a kind of paint slag desiccation thermal oxide system, and it includes painting slag bath, paint pulp pump, paint slag filter press, paint residue crusher structure, desiccation oxygenation machanism, waste gas dedusting mechanism and paint slag finished product recovering mechanism；The discharging opening for painting slag bath paints the charging aperture of slag filter press, slag notch connection paint residue crusher structure by painting pulp pump connection；Paint the slag notch connection desiccation oxygenation machanism of residue crusher structure；Desiccation oxygenation machanism includes drying oxidation cylinder, and the cylinder of dry oxidation cylinder is provided with bypasses interface for the heat of external thermal source, and agitator is provided with cylinder；Dry oxidation cylinder the paint slag in cylinder is dried and aoxidized, the exhaust gas transmission obtained after oxidation will be dried to waste gas dedusting mechanism, paint slag is transmitted to paint slag finished product recovering mechanism；Waste gas dedusting mechanism to waste gas be filtrated to get remaining paint slag and transmitted to paint slag finished product recovering mechanism, and the waste gas after filtering is discharged by gas outlet.Desiccation thermal oxidation can be carried out to paint slag, improve resolution process efficiency, reduce the generation of noxious material, reduce carbon emission amount using the present invention.
Description
Technical field
The present invention relates to paint Slag treatment technical field, particularly a kind of paint slag desiccation thermal oxide system.
Background technology
Automotive paints and its waste residue are mainly made up of 4 kinds of resin, pigment, solvent and additive bases.Resin is oil
The film forming matter of paint, it is divided into natural resin and Albertol, natural resin is mainly made up of the secretion of insect or trees, mainly
Composition is rosin and shellac；Albertol's main component is acrylic resin, alkyd resin, melamine, NC Nitroncellulose, poly-
Urethane resin, epoxy resin etc..Pigment is divided into inorganic pigment and organic pigment according to composition, and inorganic pigment is typically gloomy face
Color, main component are metal oxides such as titanium dioxide, iron oxide red etc.；Organic pigment is typically bright color, mainly into
It is benzimidazolone, heterocyclic ketone such as permanent yellow, permanent violet etc. to divide.Solvent is generally aliphatic hydrocarbon, fragrance of the boiling point below 250 DEG C
Hydrocarbon（Benzene class）, alcohol ethers and esters.
Prior art typically carries out desiccation using the means directly burned to paint slag, but the characteristic for painting slag is very viscous, and
There is a special gluing phase stage in the drying process（Moisture content is 40%-60%）, in this extremely narrow changeover portion, paint slag pole
Easily caking, surface is hard, is difficult to crush, and the inside is still sposh shape, therefore desiccation degree is not high, and in paint slag burning process
In, the noxious materials such as bioxin can be also produced, do not meet the requirement of national low-carbon environment-friendly.
RTO (Regenerative Thermal Oxidizer, abbreviation RTO), heat accumulating type oxidation furnace.
The content of the invention
It is an object of the invention to provide one kind to paint slag desiccation thermal oxide system and method, can carry out the hot oxygen of desiccation to paint slag
Change is handled, and improves resolution process efficiency, reduces the generation of noxious material, reduces carbon emission amount.
The technical scheme that the present invention takes is specially：One kind paint slag desiccation thermal oxide system, including paint slag bath, paint pulp pump,
Paint slag filter press, paint residue crusher structure, desiccation oxygenation machanism, waste gas dedusting mechanism and paint slag finished product recovering mechanism；
Paint slag filter press includes charging aperture, delivery port and slag notch, paints the discharging opening of slag bath by painting pulp pump connection paint slag press filtration
The charging aperture of machine；Paint the slag notch connection paint residue crusher structure of slag filter press；
Paint residue crusher structure crushes to paint slag, its slag notch connection desiccation oxygenation machanism；
Desiccation oxygenation machanism includes drying oxidation cylinder, and drying oxidation cylinder includes cylinder, and cylinder is provided with charging aperture, discharging opening, use
In the gas outlet of discharge waste gas, and the heat bypass interface for external thermal source, cylinder is interior to be provided with agitator；Oxidation cylinder is dried to cylinder
Interior paint slag is dried and aoxidized, and will dry the waste gas obtained after oxidation by outlet port transmission to waste gas dedusting mechanism, will
Dry the paint slag obtained after oxidation and slag finished product recovering mechanism is extremely painted by the port transmission that discharges；
Waste gas dedusting mechanism includes air inlet, gas outlet and slag notch；Waste gas dedusting mechanism to the waste gas being passed through filter
Slag is painted to remnants, remnants paint slags are arranged by slagging tap port transmission to slag finished product recovering mechanism, the waste gas after filtering is painted by gas outlet
Go out.
In use, drying oxidation cylinder can be dried and aoxidize to the paint slag after crushing, oxidation reaction can disappear the present invention
The materials such as organic matter and carbon in paint removal slag.The contacting efficiency of paint slag and hot blast can be increased by drying the agitator in oxidation cylinder, from
And improve and dry oxidation efficiency.
Further, present invention additionally comprises heat accumulating type oxidation furnace, the gas outlet of waste gas dedusting mechanism is connected by blower fan to be stored
The air inlet of hot type oxidation furnace, the heat bypass interface of the gas outlet connection desiccation oxygenation machanism of heat accumulating type oxidation furnace.Can be by system
The waste gas containing heat after middle processing is passed through in super drying machine, and realization recycles.
Preferably, the desiccation oxygenation machanism also includes charging basket and helical feed passage, and agitator, spiral are provided with charging basket
Helical feed roller is provided with transfer passage；Charging basket is connected by helical feed passage dries oxidation cylinder.With will be from disintegrating mechanism
The paint slag of acquisition, which is delivered to, to be dried in oxidation cylinder.Charging basket can be carried out to the endlessly paint slag obtained from paint residue crusher structure
Stirring, paint slag in charging basket is promoted to enter in helical feed passage, while spiral shell in stirring in charging basket and helical feed passage
The rotation of rotation conveying roller can also continue to play pulverization to paint slag, reduce paint slag particle footpath, improve contact effect of the paint slag with hot blast
Rate.
Preferably, in desiccation oxygenation machanism, the cylinder for drying oxidation cylinder is rotatable cylinder, and the agitator in cylinder includes
Both ends are respectively facing the rotating shaft of charging aperture and discharging opening, and the stirring vane that spiral is set around the shaft.At work, agitator
Rotated simultaneously with cylinder, crushing further can be stirred to paint slag, while make it that contact of the hot blast with painting slag is more abundant, oxidation
Reaction efficiency is higher.The agitator of spiral roller type can transport the paint slag in cylinder to discharging opening when rotating.
Disintegrating mechanism and desiccation thermal oxide mechanism in the present invention can use super drying machine, and super drying machine is existing production
Product, crushing, stirring mechanism is provided with it, and rotatable cylinder itself also has the function of broken stirring.
Preferably, the delivery port connection paint slag bath of slag filter press is painted.Water can be achieved in paint slag bath between paint slag filter press
Recycle.Mixing of the water with painting slag may be such that paint slag transmits more easily by paint pulp pump in pipeline.
Preferably, paint slag filter press uses plate and frame type filter-press.Plate and frame type filter-press is existing product, and it can enter to paint slag
Row press filtration, to filter out moisture in paint slag etc..
Preferably, waste gas dedusting mechanism uses cyclone dust collectors, and it is existing product, can carry out dust removal process to waste gas.
It can be the existing device for being used to paint slag recovery that the present invention, which paints slag finished product recovering mechanism, by desiccation oxygenation machanism and give up
The paint slag flowed out in gas dedusting mechanism can be entered in paint slag recovering mechanism by same transfer passage carries out packing and binding transport etc.
Follow-up work, transfer passage can equally use helical feed form.
Beneficial effect
Compared with prior art, the present invention has advantages below and progress：
1）The setting of disintegrating mechanism can overcome the adhesion problem of paint slag, and the paint ground-slag in gluing phase stage is broken into little particle, improve
Follow-up drying oxidation efficiency；
2）Paint slag can be dried and oxidation reaction for the setting of desiccation oxygenation machanism, except the moisture in coating removal slag, organic matter and
Carbon, during do not produce the toxic gases such as bioxin, can reduce paint Slag treatment final carbon emission amount；
3）It is dry to common revolution to may be such that overall heat-transfer coefficient improves to compound for the cylinder and agitator rotated in desiccation oxygenation machanism
2 ~ 3 times of dry machine（Ua=200~600W/m2K）；
4）Energy consumption is saved, economic value added is high：Material after crushed, adds its area contacted with hot blast so that hot blast obtains
Utilized to sufficient, and exhaustion hot wind recycles, and can greatly reduce energy consumption；The paint residue product dried after oxidation is particle diameter
For 1-5mm particle, and calorific value is high, if by working process, can be used as fuel；
5）The composition mechanism of present system it is simple, it is necessary to detection parts it is few, be easy to maintaining.
Brief description of the drawings
Fig. 1 show present system structural representation；
1- paints slag bath, 2- paint pulp pumps, 3- paint slag press filtrations pond, 4- paint residue crusher structures, 5- desiccation oxygenation machanisms, 51- charging baskets, 511-
Charging basket agitator, 52- spiral conveying mechanisms, 53- heat bypass interfaces, 54- dry oxidation cylinder cylinder, 55- stirring vanes, and 56- turns
Axle, 6- waste gas dedustings mechanism, 7- blower fans, 8- paint slag recovering mechanisms.
Embodiment
Further described below in conjunction with the drawings and specific embodiments.
With reference to figure 1, paint slag desiccation thermal oxide system of the invention, including paint slag bath 1, paint pulp pump, paint slag filter press 3, paint
Residue crusher structure 4, desiccation oxygenation machanism 5, waste gas dedusting mechanism 6 and paint slag finished product recovering mechanism 8；
Paint slag filter press 3 includes charging aperture, delivery port and slag notch, paints the discharging opening of slag bath 1 by painting the connection paint slag pressure of pulp pump 2
The charging aperture of filter 3；Paint the slag notch connection paint residue crusher structure 4 of slag filter press 3；
Paint residue crusher structure 4 crushes to paint slag, its slag notch connection desiccation oxygenation machanism 5；
Desiccation oxygenation machanism 5 includes drying oxidation cylinder, and drying oxidation cylinder includes cylinder 54, and cylinder 54 is provided with charging aperture, discharging
Mouth, the gas outlet for discharging waste gas, and the heat bypass interface 53 for external thermal source, cylinder 54 is interior to be provided with agitator；Dry
Oxidation cylinder is dried and aoxidized to the paint slag in cylinder, and the waste gas obtained after dry aoxidize is removed by outlet port transmission to waste gas
Dirt mechanism 6, the paint slag obtained after dry aoxidize is passed through into the port transmission that discharges and extremely paints slag finished product recovering mechanism 8；
Waste gas dedusting mechanism 6 includes air inlet, gas outlet and slag notch；Waste gas dedusting mechanism 6 filters to the waste gas being passed through
Remaining paint slag is obtained, for remnants paint slags by port transmission of slagging tap to slag finished product recovering mechanism 8 is painted, the waste gas after filtering passes through gas outlet
Discharge.
In use, drying oxidation cylinder can be dried and aoxidize to the paint slag after crushing, oxidation reaction can disappear the present invention
The materials such as organic matter and carbon in paint removal slag.The contacting efficiency of paint slag and hot blast can be increased by drying the agitator in oxidation cylinder, from
And improve and dry oxidation efficiency.
Embodiment
With reference to figure 1, the present embodiment includes paint slag bath 1, paint pulp pump, paint slag filter press 3, paint residue crusher structure 4, desiccation oxidation
Mechanism 5, waste gas dedusting mechanism 6 and paint slag finished product recovering mechanism 8；Also include heat accumulating type oxidation furnace RTO, waste gas dedusting mechanism goes out
Gas port connects the air inlet of heat accumulating type oxidation furnace by blower fan 7, the gas outlet connection desiccation oxygenation machanism of heat accumulating type oxidation furnace
Heat bypass interface 53.The waste gas containing heat after being handled in system can be passed through in super drying machine, realization recycles.
Paint the delivery port connection paint slag bath of slag filter press.Water can be achieved in paint slag bath to the circulation profit between paint slag filter press
With.Mixing of the water with painting slag may be such that paint slag transmits more easily by paint pulp pump in pipeline.
Desiccation oxygenation machanism also includes charging basket 51 and helical feed passage 52, and 51 are provided with agitator 511, spiral transferring in charging basket
Send in passage 52 and be provided with helical feed roller；Charging basket 51 is connected by helical feed passage 52 dries oxidation cylinder.With will be from pulverizer
The paint slag obtained in structure, which is delivered to, to be dried in oxidation cylinder.Charging basket 51 can be to the endlessly paint that obtains from paint residue crusher structure
Slag is stirred, and promotes the paint slag in charging basket 51 to enter in helical feed passage 52, while the stirring in charging basket and spiral transferring
Send the rotation of passage inside spin conveying roller to can also continue to play pulverization to paint slag, reduce paint slag particle footpath, improve paint slag and heat
The contacting efficiency of wind.
In desiccation oxygenation machanism, the cylinder 54 for drying oxidation cylinder is rotatable cylinder, and the agitator in cylinder includes both ends
It is respectively facing the rotating shaft 56 of charging aperture and discharging opening, and the stirring vane 55 that 56 spirals are set around the shaft.At work, stir
Device rotates simultaneously with cylinder 54, further can be stirred crushing to paint slag, while make it that contact of the hot blast with painting slag is more abundant,
Efficiency is higher.The agitator of spiral roller type can transport the paint slag in cylinder to discharging opening when rotating.
Disintegrating mechanism and desiccation thermal oxide mechanism can use super drying machine, and super drying machine is existing product, set in it
Crushing, stirring mechanism is put, rotatable cylinder itself also has the function of broken stirring, can be by gluing shape thing and block etc.
Material is crushed, disperseed, and increases hot blast contacting efficiency with this, and cylinder is so as to ensureing to obtain greater homogeneity in a short time（Grain
Footpath is 1-5mm）Drying finished product.After paint slag material enters charging basket, preliminary stirring is carried out by the agitator in charging basket and crushed, then
Conveyed by helical feed passage, material can be crushed again during conveying, and then is put into and is dried oxidation cylinder
Cylinder in carry out intense agitation crush.Moved drying the circulation rotating that material starts from cylinder body bottom to top in oxidation cylinder
Make, material is dropped from top due to Action of Gravity Field during rotation, and the stirring vane rotated at a high speed is ground into tiny
Particle, this do action are carried out continuously always, until material is discharged outside stove.
The paint slag filter press 3 of the present embodiment uses plate and frame type filter-press.Plate and frame type filter-press is existing product, and it can be to paint
Slag carries out press filtration, to filter out moisture in paint slag etc..Waste gas dedusting mechanism 7 uses cyclone dust collectors, and it is existing product, can be right
Waste gas carries out dust removal process.
Present invention paint slag finished product recovering mechanism 8 can be the existing device for being used to paint slag recovery, by desiccation oxygenation machanism and
The paint slag flowed out in waste gas dedusting mechanism can be entered in paint slag recovering mechanism by same transfer passage carries out packing and binding transport
Deng follow-up work, transfer passage can equally use helical feed form.
The paint slag desiccation oxidative system of the present embodiment, workflow are：
1. the paint slag in paint slag bath is sent into plate and frame type filter-press with water by painting pulp pump；
2. entering disintegrating mechanism by funnel type discharge gate by forming paint clinker after press filtration, paint the water after being filtered in clinker and enter
Enter to paint slag bath recycling；
3. disintegrating mechanism smashes the charging basket into desiccation oxygenation machanism by clinker is painted；
Dried 4. the broken paint slag in charging basket is transported to by helical feed passage in oxidation cylinder, dry the heat bypass interface of oxidation cylinder
850 DEG C or so of the hot-air discharged through RTO is passed through, heating carbonization is carried out to paint slag；
The following process such as packing and binding transport are carried out 5. drying the paint slag finished product after oxidation and entering paint slag recovering mechanism；
6. drying the waste gas in oxidation cylinder enters cyclone dust collectors, deduster filters the remaining tiny paint slag in waste gas, waste gas
Enter RTO by blower fan to handle to discharge 850 DEG C or so of hot-air.
Compared with prior art, the present invention has advantages below and progress：
1）The setting of disintegrating mechanism can overcome the adhesion problem of paint slag, and the paint ground-slag in gluing phase stage is broken into little particle, improve
Follow-up drying oxidation efficiency；
2）Paint slag can be dried and oxidation reaction for the setting of desiccation oxygenation machanism, except the moisture in coating removal slag, organic matter and
Carbon, during do not produce the toxic gases such as bioxin, can reduce paint Slag treatment final carbon emission amount；
3）It is dry to common revolution to may be such that overall heat-transfer coefficient improves to compound for the cylinder and agitator rotated in desiccation oxygenation machanism
2 ~ 3 times of dry machine（Ua=200~600W/m2K）；
4）Energy consumption is saved, economic value added is high：Material after crushed, adds its area contacted with hot blast so that hot blast obtains
Utilized to sufficient, and exhaustion hot wind recycles, and can greatly reduce energy consumption；The paint residue product dried after oxidation is particle diameter
For 1-5mm particle, and calorific value is high, if by working process, can be used as fuel；
5）The composition mechanism of present system it is simple, it is necessary to detection parts it is few, be easy to maintaining.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. one kind paint slag desiccation thermal oxide system, it is characterized in that, including paint slag bath, paint pulp pump, paint slag filter press, paint residue crusher
Structure, desiccation oxygenation machanism, waste gas dedusting mechanism and paint slag finished product recovering mechanism；
Paint slag filter press includes charging aperture, delivery port and slag notch, paints the discharging opening of slag bath by painting pulp pump connection paint slag press filtration
The charging aperture of machine；Paint the slag notch connection paint residue crusher structure of slag filter press；
Paint residue crusher structure crushes to paint slag, its slag notch connection desiccation oxygenation machanism；
Desiccation oxygenation machanism includes drying oxidation cylinder, and drying oxidation cylinder includes cylinder, and cylinder is provided with charging aperture, discharging opening, use
In the gas outlet of discharge waste gas, and the heat bypass interface for external thermal source, cylinder is interior to be provided with agitator；Oxidation cylinder is dried to cylinder
Interior paint slag is dried and aoxidized, and will dry the waste gas obtained after oxidation by outlet port transmission to waste gas dedusting mechanism, will
Dry the paint slag obtained after oxidation and slag finished product recovering mechanism is extremely painted by the port transmission that discharges；
Waste gas dedusting mechanism includes air inlet, gas outlet and slag notch；Waste gas dedusting mechanism to the waste gas being passed through filter
Slag is painted to remnants, remnants paint slags are arranged by slagging tap port transmission to slag finished product recovering mechanism, the waste gas after filtering is painted by gas outlet
Go out.
2. paint slag desiccation thermal oxide system according to claim 1, it is characterized in that, in addition to heat accumulating type oxidation furnace, waste gas
The gas outlet of dedusting mechanism connects the air inlet of heat accumulating type oxidation furnace, the gas outlet connection desiccation of heat accumulating type oxidation furnace by blower fan
The heat bypass interface of oxygenation machanism.
3. paint slag desiccation thermal oxide system according to claim 1, it is characterized in that, the desiccation oxygenation machanism also includes material
Bucket and helical feed passage, charging basket is interior to be provided with agitator, and helical feed roller is provided with helical feed passage；Charging basket passes through spiral transferring
Passage connection is sent to dry oxidation cylinder.
4. paint slag desiccation thermal oxide system according to claim 1, it is characterized in that, in desiccation oxygenation machanism, dry oxidation
The cylinder of cylinder be rotatable cylinder, and the agitator in cylinder is respectively facing the rotating shaft of charging aperture and discharging opening including both ends, and
The stirring vane that spiral is set around the shaft.
5. paint slag desiccation thermal oxide system according to claim 1, it is characterized in that, the delivery port connection paint of paint slag filter press
Slag bath.
6. paint slag desiccation thermal oxide system according to claim 1, it is characterized in that, paint slag filter press uses plate and frame press filtration
Machine.
7. paint slag desiccation thermal oxide system according to claim 1, it is characterized in that, waste gas dedusting mechanism uses cyclone dust removal
Device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711013913.7A CN107671107B (en) | 2017-10-26 | 2017-10-26 | Paint slag drying thermal oxidation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711013913.7A CN107671107B (en) | 2017-10-26 | 2017-10-26 | Paint slag drying thermal oxidation system |
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| CN107671107A true CN107671107A (en) | 2018-02-09 |
| CN107671107B CN107671107B (en) | 2023-05-02 |
Family
ID=61142867
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889760A (en) * | 2018-05-09 | 2018-11-27 | 陈善堂 | A kind of regeneration device and application method of Oil Paint Slag |
| CN112676313A (en) * | 2020-12-23 | 2021-04-20 | 东莞市慧江平成机械有限公司 | Paint slag recycling equipment and recycling method thereof |
| WO2021138933A1 (en) * | 2020-01-06 | 2021-07-15 | 杰瑞环保科技有限公司 | Comprehensive treatment device for waste paint slag |
| CN115164511A (en) * | 2022-07-05 | 2022-10-11 | 广东工业大学 | Paint slag drying method, system and control method thereof |
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