CN104910671A - Method for classifying and recycling multiple resins in mixed waste paint - Google Patents
Method for classifying and recycling multiple resins in mixed waste paint Download PDFInfo
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- CN104910671A CN104910671A CN201510308638.6A CN201510308638A CN104910671A CN 104910671 A CN104910671 A CN 104910671A CN 201510308638 A CN201510308638 A CN 201510308638A CN 104910671 A CN104910671 A CN 104910671A
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention discloses a method for classifying and recycling multiple resins in mixed waste paint. The method comprises the following steps: extracting waste residues by utilizing a mixed solvent of solvent gasoline and xylene, and recycling to obtain medium and long oil length alkyd resins; extracting the waste residues by using a xylene solvent, and recycling to obtain reclaimed resins comprising the main components such as epoxy resins and polyester resins; extracting the waste residues by using a mixed solvent of xylene and ketone, and recycling to obtain reclaimed resins comprising the main components such as acrylic resins; and extracting the waste residues by using a mixed solvent of xylene and benzyl alcohol, and recycling to obtain reclaimed resins comprising the main components such as amino resins. The method for recycling the waste residues of the paint disclosed by the invention has the advantages that the method is suitable for extracting the mixed paint residues of multiple kinds of paint, has high resin recycling rate and high waste recycling economical efficiency and is green and environment-friendly, real waste utilization is realized, and the like.
Description
Technical field
The present invention relates to the recovery and treatment method of discarded paint, be specifically related to a kind of classified reclaiming method mixing various kinds of resin in discarded paint.
Background technology
Usually the constructional methods such as high-pressure air spraying, high pressure airless spray, electrostatic spraying are adopted in the coating process of hardware products.Generally, only have the paint spay-coating of small part in spraying operation on workpiece, remaining major part has all been splashed in paint spray booth or has otherwise lost.At present, the producer such as most domestic antitheft door, motorcycle, automobile fitting, hardware & tools all adopts installs cascade curtain to the method for collecting useless coating cloud and processes in paint spray booth, usually all can produce a large amount of waste paint slags.For a medium-and-large-sized antitheft door enterprise, the paint slag produced for a year is no less than 5 tons, lost value more than 10 ten thousand yuan.Guestimate is being described as the Yongkang, Zhejiang of " the middle gateway of a country all ", and only the antitheft door industry paint slag lost value of a year just reaches more than 5,000 ten thousand yuan.
Wanting on the other hand greenization ground to process these, to land overboard contaminated waste painting slag then very difficult.The method of current disposal paint slag mainly contains landfill and burning.Although landfill disposal is simple, direct, takies a large amount of land resources, and easily cause the environmental pollutions such as serious soil, water body; And during by burning disposal, because the restriction of combustion technology more easily produces the secondary pollution such as waste gas, waste residue.Day by day serious along with China's problem of environmental pollution, and a series of environmental protection is correlated with the appearance of new legislation and constantly perfect, the paint slag handling problems generally coexisted to existing hardware products and application relevant industries is carried out research and development and is just seemed extremely important.
Since nearly ten years, the recovery and reusing and recycling method of the domestic paint slag that also begins one's study.Such as, Authorization Notice No. is that the Chinese invention patent document of CN 102277027B discloses a kind of preparing paint by recovering waste paint, raw material primarily of following weight part is made: waste oil paint 4 ~ 6, gloss oil 2 ~ 3, glue 0.8 ~ 1.2, rouge and powder 0.4 ~ 0.6, toluene 0.8 ~ 1.2, first the waste oil paint of recovery and gloss oil are put into stirrer, abundant stirring 120 ~ 150 minutes, then add rouge and powder and carry out stirring 30 minutes, add toluene again, stir 50 minutes, finally add glue, stir and contain in container stand-by in 60 minutes.
But the method for current disclosed report is all after being processed paint slag by various different dewatering mostly, directly solid residue is ground, be prepared into the raw material as low side paint after pressed powder, add in preparation technology's link of paint thus realize recovery.But due to component more complicated in the paint slag of recovery, the different resins that may paint containing different brands and the different pigment of different color, even also have crosslinking curing, destroyed paint solid, and the impurity of a lot of machinery, extensive like this, simple recovery method acquisition paint slag regenerant cannot be used in high-end paint obviously, and its organic efficiency and economic benefit are all very low.
Summary of the invention
For solving the technical problem underlying greatly of two in Oil Paint Slag recycling: (1) is multiple different paint kind because application producer may use simultaneously, how to realize the effective recycling of the mixing paint slag of these complexity, particularly realize the recovery respectively of the resin components wherein with higher economic worth, this is an important technical problem; (2) how the regenerant of Oil Paint Slag can be used for high-end painting, be at least in the product of former paint quality standard level, better improves the economic benefit reclaiming paint slag.The invention provides a kind of classified reclaiming method mixing various kinds of resin in discarded paint, according to the solvability difference of resin contained in mixing discarded paint slag, alkane, aromatic hydrocarbons, ester, ketone, alcohol equal solvent is adopted to extract successively respectively, to realize the recovery respectively of various types of resins in mixed paint slag, the resin reclaimed may be used for preparing the painting with corresponding former paint quality level, has larger economic benefit and environmental value.
Mix a classified reclaiming method for various kinds of resin in discarded paint, comprise the steps:
(1) dewater after being selected by mixed paint ballast screen to obtain dehydration paint slag; In dehydration paint slag, add the mixed solvent of gasoline and dimethylbenzene, stirring and dissolving, then leaves standstill, filters to obtain the first solid phase and the first liquid phase, and the first liquid phase obtains the first recovery resin through absorption, underpressure distillation process;
(2) in the first solid phase, add xylene solvent, stirring and dissolving, then leave standstill, filter and to obtain second solid phase and second liquid phase, second liquid phase obtains the second recovery resin through absorption, underpressure distillation process;
(3) in second solid phase, add the mixed solvent of dimethylbenzene and ketone, stirring and dissolving, then leave standstill, filter and to obtain the 3rd solid phase and the 3rd liquid phase, the 3rd liquid phase obtains the 3rd reclaim resin through absorption, underpressure distillation process;
(4) in the 3rd solid phase, add the mixed solvent of dimethylbenzene and phenylcarbinol, stirring and dissolving, then leave standstill, filter and to obtain the 4th solid phase and the 4th liquid phase, the 4th liquid phase obtains the 4th reclaim resin through absorption, underpressure distillation process.
4th solid phase is residual residue, the various pigments etc. that the resin that remaining residue is mainly cross-linked and being difficult to dissolves in a solvent.
Preferably, the stirring and dissolving process in step (1) ~ (4) is all carried out under 25-50 DEG C of constant temperature, and churning time is 5-12 hour.
Preferably, in step (1), the add-on of the mixed solvent of gasoline and dimethylbenzene paints the volume mass of slag than being 1.5-4mL:1g with dehydration; In step (2), the add-on of xylene solvent is 1.5-4mL:1g with the mass volume ratio painting slag that dewaters; In step (3), the add-on of the mixed solvent of dimethylbenzene and ketone is 1.5-2mL:1g with the mass volume ratio painting slag that dewaters; In step (4), the add-on of the mixed solvent of dimethylbenzene and phenylcarbinol is 1.5-2mL:1g with the mass volume ratio painting slag that dewaters.Namely the quantity of solvent added in each step with initial dehydration paint slag for benchmark.
According to the inventive method process mixing paint paint slag, step (1) reclaim the first resin obtained be based in, the recovery resin of long oil alkyd; It is recovery resin based on epoxy resin, vibrin that step (2) reclaims the second resin obtained; It is recovery resin based on acrylic resin that step (3) reclaims the 3rd resin obtained; It is recovery resin based on aminoresin that step (4) reclaims the 3rd resin obtained.
Preferably, the liquid phase of step (1) ~ (4) obtains corresponding resin after absorption, underpressure distillation process, and corresponding solvent reclaims.
Method of the present invention discards various types of resins in mixture by the paint adopting different solvents to extract recovery multiclass respectively different.Mixed paint slag is being carried out simple screening, after vacuum hydro-extraction process, according to the solvability difference of resin contained in mixing discarded paint slag, alkane, aromatic hydrocarbons, ester, ketone, alcohol equal solvent is adopted to extract successively respectively, to realize the recovery respectively of various types of resins in mixed paint slag, paint slag recovery method of the present invention, there is the mixed paint slag being suitable for multiclass paint extract, and the high resin rate of recovery, high Waste recovery economy, environmental protection, realizes the advantages such as real utilization of waste material.
Preferably, in step (1), in mixed solvent, the volume of dimethylbenzene consists of 0 ~ 40%; Most preferably, the volume of dimethylbenzene consists of 40%.Gasoline used is common commercial goods, such as, and No. 120 industrial napthas, No. 200 industrial napthas.
Preferably, the ketone in step (3) mixed solvent used is at least one in butanone, acetone, methylethylketone and pimelinketone.
Preferably, in step (3) mixed solvent used, the volume of ketone consists of 10-90%; Most preferably, the volume of ketone consists of 10%.
Preferably, in step (4), in mixed solvent used, the volume of phenylcarbinol consists of 10-90%; Most preferably, the volume of phenylcarbinol consists of 10%.
Preferably, in step (1) ~ (4), the absorption of filtrate all adopts charcoal absorption.
Preferably, in step (1), dehydration is: mixed paint slag is carried out mechanical presses, then vacuum-drying 30min-6h at 20-50 DEG C.
A kind of most preferred technical scheme:
(1) carry out mechanical presses after being selected by mixed paint ballast screen, then at 25 DEG C, vacuum-drying 6h dewaters, and obtaining dewaters paints slag;
(2) in dehydration paint slag, add the mixed solvent (gasoline and dimethylbenzene volume ratio are 60:40) of gasoline and dimethylbenzene, mixed solvent and dehydration paint the volume mass of slag than being 1.5mL:1g, 25 DEG C of constant temperature stir 12 hours, by undissolved paint slag and mixed solvent filtering separation after leaving standstill, it is main recovery resin that filtrate is able to Synolac after absorption, underpressure distillation process, and mixed solvent reclaims;
(3) in the undissolved paint slag of step (2) gained, xylene solvent is added, xylene solvent and dehydration paint the volume mass of slag than being 1.5mL:1g, 25 DEG C of constant temperature stir 12 hours, by undissolved paint slag and dimethylbenzene filtering separation after leaving standstill, filtrate is able to epoxy resin after absorption, underpressure distillation process, vibrin is main recovery resin, and dimethylbenzene reclaims;
(4) in the undissolved paint slag of gained in step (3), add the mixed solvent (volume ratio of dimethylbenzene and butanone is 90:10) of dimethylbenzene and ketone, mixed solvent and dehydration paint the volume mass of slag than being 1.5mL:1g, 25 DEG C of constant temperature stir 12 hours, by undissolved paint slag and dimethylbenzene filtering separation after leaving standstill, it is main recovery resin that filtrate is able to acrylic resin after absorption, underpressure distillation process, and mixed solvent reclaims;
(5) in the undissolved paint slag of gained in step (4), add the mixed solvent (dimethylbenzene and phenylcarbinol volume ratio are 90:10) of dimethylbenzene and phenylcarbinol, mixed solvent and dehydration paint the volume mass of slag than being 1.5mL:1g, 50 DEG C of constant temperature stir 12 hours, by undissolved paint slag and mixed solvent filtering separation after leaving standstill, it is main recovery resin that filtrate is able to aminoresin after absorption, underpressure distillation process, and mixed solvent reclaims.
Compared with prior art, beneficial effect of the present invention shows:
(1) the hybrid resin classified reclaiming method of discarded paint disclosed by the invention, compared with publication number to be the patent documentations such as CN100540614C, CN102558938B the be prior art of representative, has the economic benefit of better practicality and Geng Gao.Due in actual production process, a lot of application enterprise all can use variously has different resins composition, the paint of different ingredients or composition, therefore be all usually the mixture of various paint in the discarded Oil Paint Slag produced in these application enterprises, and be CN100540614C with publication number, the patent documentations such as CN102558938B are that the prior art of representative is usually all only for the recycling of a class paint slag, or just directly to pulverize with the paint slag solid after the process of solvent distillation dehydration, as powder filler reuse, these recoverying and utilizing methods in fact and be not suitable for the mixture processing multiple discarded paint, and it is very low to reclaim economic benefit, reclaim product can only be applied in the painting of low side.
(2) in the present invention, the vacuum-drying under 20-50 DEG C of low temperature of mixed paint slag can be avoided painting the crosslinked and solidification of resin in slag, thus guarantee the rate of recovery that each resin is higher.
(3) the present invention is according to the laboratory result in early stage of various typical resins solubility studies in different solvents system, adopt the solvent with different solubility property to extract successively mixed paint slag specimen product respectively, thus effectively can realize the recovery respectively of various types of resins in mixed paint slag.
(4) the present invention is in the extracting solution of different solvents system, adsorption treatment is carried out with gac, effectively can decolour to paint slag specimen product, obtain substantially colourless recovery resin, these resins can be applied to the corresponding top grade paint produced and have shades of colour.
Accompanying drawing explanation
Fig. 1 be be able in, long oil alkyd is main recovery resin infrared spectra spectrogram;
Fig. 2 is be able to epoxy resin is main recovery resin infrared spectra spectrogram;
Fig. 3 is be able to acrylic resin is main recovery resin infrared spectra spectrogram;
Fig. 4 is be able to aminoresin is main recovery resin infrared spectra spectrogram;
Fig. 5 mixes each resin extraction process schematic diagram in discarded Oil Paint Slag.
Embodiment
Following examples are all carried out according to the technical process shown in Fig. 5, are raw materials usedly regular industrial raw material or commercial goods.
Embodiment 1
(1) the dark color mixing paint slag sample obtained from certain enterprise, manually rejects foreign matter and mechanical impurity, and carries out simple mechanical presses dehydration, then to put under vacuum drying oven 25 DEG C of room temperatures dry 6 hours.
(2) clip 100g sample from dried paint slag, be placed in the reactor of belt stirrer, add the mixed solvent (solvent 1) (volume ratio 60:40) of 150mL200 industrial naptha and dimethylbenzene, stir 12 hours at constant temperature 25 DEG C, by undissolved paint slag and mixed solvent filtering separation after leaving standstill, the filtrate 1 obtained uses charcoal absorption, and obtain the recovery rosin products 61g based on Synolac after underpressure distillation, its infrared spectra spectrogram as shown in Figure 1.The saturated V of stronger middle longer chain fatty acid can be seen in figure
c-H(2955-2850cm
-1), δ
c-H(700-740cm
-1), the unsaturated V on adjacent benzene dicarboxylic acid
c-H(3062cm
-1) and phenyl ring skeletal vibration (1580-1600cm
-1), and the V of ester bond
c=O(1731cm
-1), and V
cOO(1269,1121cm
-1) etc. characteristic signal.Gained resin mainly Synolac is described, its content is more than 85%.
(3) in filter residue, add 150mL dimethylbenzene (solvent 2), stir 12 hours at constant temperature 25 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 2 obtained uses charcoal absorption, obtain the recovery rosin products 15g based on epoxy resin after underpressure distillation, its infrared spectra spectrogram as shown in Figure 2.Unsaturated V on stronger dihydroxyphenyl propane phenyl ring can be seen in figure
c-H(3054cm
-1) and phenyl ring skeletal vibration (1456-1507,1580-1600cm
-1), phenyl ring contraposition is two replaces (829cm
-1), and the V of ehter bond
c-O(1034,1183,1244cm
-1) etc. characteristic signal.Gained resin mainly epoxy resin is described, its content is more than 95%.
(4) mixed solvent (solvent 3) (volume ratio 90:10) adding 150mL dimethylbenzene and butanone in filter residue is continued, stir 12 hours at room temperature 25 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 3 obtained uses charcoal absorption, obtain the recovery rosin products 18g based on acrylic resin after underpressure distillation, its infrared spectra spectrogram as shown in Figure 3.The saturated V in stronger polyacrylic acid backbone can be seen in figure
c-H(2960-2850cm
-1), the V of ester bond
c=O(1735cm
-1), and V
cOO(1261,1166cm
-1) etc. characteristic signal.Gained resin mainly acrylic resin is described, its content is more than 95%.
(5) mixed solvent (solvent 4) (volume ratio 90:10) adding 150mL dimethylbenzene and phenylcarbinol in filter residue is continued, stir 12 hours at constant temperature 50 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 4 obtained uses charcoal absorption, the recovery rosin products 1g based on aminoresin is obtained after underpressure distillation, and reclaiming the solid residue 3g of insoluble, the infrared spectra spectrogram of the recovery rosin products based on aminoresin is as shown in Figure 4.Stronger amino V can be seen in figure
n-H(3357cm
-1), V
c-N(1375cm
-1), the V in ether and alcohol
cOO(1086,1014cm
-1) etc. characteristic signal.The aminoresin of gained resin mainly butyl ether is described, its content is more than 85%.
(6) recycling (in Synolac iron oxide red anticorrosive paint be prepared as example) of resin is reclaimed: by mass parts 100, fetch the alkyd resin solution (solid content 50%) 42 parts of receipts, red iron oxide 20 parts, zinc-chrome yellow 5 parts, 5 parts, zinc oxide, talcum powder 5 parts, 8 parts, barium sulfate, dimethylbenzene 10 parts, dispersed with stirring is even, sand mill abrasive material 1.5 hours, the discharging when mixture granularity is less than 30um, add containing manganese naphthenate (0.2%) again, lead naphthenate (10%), the siccative solution of zinc naphthenate (3%) 1.5 parts, pack after regulating suitable viscosity with surplus dimethylbenzene again.
With business-like alkyd resin solution (solid content 50%) for contrast, identical technique is adopted to prepare Synolac iron oxide red anticorrosive paint, in contrast sample.
Reclaim Synolac iron oxide red anticorrosive paint and Synolac iron oxide red antirust former paint (control sample) performance comparison as follows:
Embodiment 2
(1) from colourless mixing paint slag No. two samples that certain enterprise obtains, artificial reject foreign matter and mechanical impurity, and carry out simple extrusion dehydration, then to put under vacuum drying oven 50 DEG C of room temperatures dry 0.5 hour.
(2) clip 100g sample from dried paint slag, be placed in the reactor of belt stirrer, add the mixed solvent (solvent 1) (volume ratio 100:0) of 400mL200 industrial naptha and dimethylbenzene, stir 5 hours at constant temperature 50 DEG C, by undissolved paint slag and mixed solvent filtering separation after leaving standstill, filtrate 1 water white transparency obtained, therefore without the need to charcoal absorption, obtains the recovery rosin products 38g. based on Synolac after underpressure distillation
(3) in filter residue, add 400mL dimethylbenzene (solvent 2), stir 5 hours at constant temperature 50 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, filtrate 2 water white transparency obtained, therefore without the need to charcoal absorption, the recovery rosin products 20g based on epoxy resin after underpressure distillation, is obtained.
(4) mixed solvent (solvent 3) (volume ratio 10:90) adding 200mL dimethylbenzene and butanone in filter residue is continued, stir 5 hours at room temperature 25 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 3 obtained, obtains the recovery rosin products 36g based on acrylic resin after underpressure distillation.
(5) mixed solvent (solvent 4) (volume ratio 10:90) adding 200mL dimethylbenzene and phenylcarbinol in filter residue is continued, stir 12 hours at constant temperature 50 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 4 obtained, obtain the recovery rosin products 1g based on aminoresin after underpressure distillation, and reclaim the solid residue 2g of insoluble.
Embodiment 3
(1) the dark color mixing paint slag sample obtained from certain enterprise, manually rejects foreign matter and mechanical impurity, and carries out simple extrusion dehydration, then to put under vacuum drying oven 37 DEG C of room temperatures dry 3 hours.
(2) clip 100g sample from dried paint slag, be placed in the reactor of belt stirrer, add the mixed solvent (solvent 1) (volume ratio 70:30) of 250mL industrial naptha and dimethylbenzene, stir 8 hours at constant temperature 37 DEG C, by undissolved paint slag and mixed solvent filtering separation after leaving standstill, the filtrate 1 obtained, with charcoal absorption, obtains the recovery rosin products 52g based on Synolac after underpressure distillation.
(3) in filter residue, add 250mL dimethylbenzene (solvent 2), stir 8 hours at constant temperature 37 DEG C, be separated with solvent filter by undissolved paint slag after leaving standstill, the filtrate 2 obtained, with charcoal absorption, obtains the recovery rosin products 17g. based on epoxy resin after underpressure distillation
(4) mixed solvent (solvent 3) (volume ratio 50:50) adding 150mL dimethylbenzene and butanone in filter residue is continued, stir 8 hours at room temperature 25 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 3 obtained, with charcoal absorption, obtains the recovery rosin products 23g. based on acrylic resin after underpressure distillation
(5) mixed solvent (solvent 4) (volume ratio 50:50) adding 150mL dimethylbenzene and phenylcarbinol in filter residue is continued, stir 12 hours at constant temperature 50 DEG C, after leaving standstill, undissolved paint slag is separated with solvent filter, the filtrate 4 obtained uses charcoal absorption, obtain the recovery rosin products 3g based on aminoresin after underpressure distillation, and reclaim the solid residue 2g of insoluble.
The specific embodiment more than enumerated is the explanation carried out the present invention; it is to be noted; above-described embodiment can only be used for that the invention will be further described; do not represent protection scope of the present invention; the nonessential amendment that other people make according to prompting of the present invention and adjustment, still belong to protection scope of the present invention.
Claims (10)
1. a classified reclaiming method for various kinds of resin in paint is discarded in mixing, it is characterized in that, comprises the steps:
(1) dewater after being selected by mixed paint ballast screen to obtain dehydration paint slag; In dehydration paint slag, add the mixed solvent of gasoline and dimethylbenzene, stirring and dissolving, then leaves standstill, filters to obtain the first solid phase and the first liquid phase, and the first liquid phase obtains the first recovery resin through absorption, underpressure distillation process;
(2) in the first solid phase, add xylene solvent, stirring and dissolving, then leave standstill, filter and to obtain second solid phase and second liquid phase, second liquid phase obtains the second recovery resin through absorption, underpressure distillation process;
(3) in second solid phase, add the mixed solvent of dimethylbenzene and ketone, stirring and dissolving, then leave standstill, filter and to obtain the 3rd solid phase and the 3rd liquid phase, the 3rd liquid phase obtains the 3rd reclaim resin through absorption, underpressure distillation process;
(4) in the 3rd solid phase, add the mixed solvent of dimethylbenzene and phenylcarbinol, stirring and dissolving, then leave standstill, filter and to obtain the 4th solid phase and the 4th liquid phase, the 4th liquid phase obtains the 4th reclaim resin through absorption, underpressure distillation process.
2. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, and it is characterized in that, the stirring and dissolving process in step (1) ~ (4) is all carried out under 25-50 DEG C of constant temperature, and churning time is 5-12 hour.
3. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, it is characterized in that, the add-on of the mixed solvent of the middle gasoline of step (1) and dimethylbenzene and dehydration paint the volume mass of slag than being 1.5-4mL:1g.
4. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, it is characterized in that, the mass volume ratio that slag is painted in add-on and the dehydration of the middle xylene solvent of step (2) is 1.5-4mL:1g.
5. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, it is characterized in that, the mass volume ratio that slag is painted in add-on and the dehydration of the mixed solvent of the middle dimethylbenzene of step (3) and ketone is 1.5-2mL:1g.
6. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, it is characterized in that, the mass volume ratio that slag is painted in add-on and the dehydration of the mixed solvent of the middle dimethylbenzene of step (4) and phenylcarbinol is 1.5-2mL:1g.
7. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, it is characterized in that, in step (1), in mixed solvent, the volume of dimethylbenzene consists of 0 ~ 40%.
8. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, and it is characterized in that, the ketone in step (3) mixed solvent used is at least one in butanone, acetone, methylethylketone and pimelinketone.
9. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, and it is characterized in that, in step (3) mixed solvent used, the volume of ketone consists of 10-90%.
10. the classified reclaiming method of various kinds of resin in paint is discarded in mixing according to claim 1, and it is characterized in that, in step (4), in mixed solvent used, the volume of phenylcarbinol consists of 10-90%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106216351A (en) * | 2016-07-22 | 2016-12-14 | 金华市海日家居用品有限公司 | A kind of integrated conduct method of dangerous solid waste |
| CN110041559A (en) * | 2018-01-17 | 2019-07-23 | 昆山瑞正金属制品有限公司 | A kind of resin efficient recycling method |
| CN112169462A (en) * | 2020-10-14 | 2021-01-05 | 大连海事大学 | Dry paint mist collecting and utilizing device |
| CN113500084A (en) * | 2021-07-22 | 2021-10-15 | 天津市瑞德赛恩水业有限公司 | Paint slag reduction process |
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| US5223141A (en) * | 1992-07-27 | 1993-06-29 | Chemfil Corporation | Method for removing and recovering paint overspray in a water wash spray booth |
| CN103254702A (en) * | 2013-04-22 | 2013-08-21 | 佛山市伊思曼化工有限公司 | Technology for recycling waste residues of PVDF (Polyvinylidene Fluoride) perfluorocarbon paint |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106216351A (en) * | 2016-07-22 | 2016-12-14 | 金华市海日家居用品有限公司 | A kind of integrated conduct method of dangerous solid waste |
| CN110041559A (en) * | 2018-01-17 | 2019-07-23 | 昆山瑞正金属制品有限公司 | A kind of resin efficient recycling method |
| CN112169462A (en) * | 2020-10-14 | 2021-01-05 | 大连海事大学 | Dry paint mist collecting and utilizing device |
| CN113500084A (en) * | 2021-07-22 | 2021-10-15 | 天津市瑞德赛恩水业有限公司 | Paint slag reduction process |
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| CN104910671B (en) | 2017-09-01 |
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