CN116945422A - Method for recycling pesticide package waste plastic bottles - Google Patents
Method for recycling pesticide package waste plastic bottles Download PDFInfo
- Publication number
- CN116945422A CN116945422A CN202310991943.4A CN202310991943A CN116945422A CN 116945422 A CN116945422 A CN 116945422A CN 202310991943 A CN202310991943 A CN 202310991943A CN 116945422 A CN116945422 A CN 116945422A
- Authority
- CN
- China
- Prior art keywords
- waste plastic
- plastic bottles
- pesticide
- recycling
- bottles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 51
- 229920003023 plastic Polymers 0.000 title claims abstract description 51
- 239000000575 pesticide Substances 0.000 title claims abstract description 35
- 239000002699 waste material Substances 0.000 title claims abstract description 35
- 238000004064 recycling Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 8
- 239000004626 polylactic acid Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000002985 plastic film Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000010914 pesticide waste Substances 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract 1
- 239000010816 packaging waste Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- -1 polyethylene Polymers 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B2017/001—Pretreating the materials before recovery
- B29B2017/0015—Washing, rinsing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention belongs to the technical field of resource recycling, and provides a recycling method of pesticide packaging waste plastic bottles, which comprises pretreatment, decomposition, filtration, mixing and forming, wherein the pretreatment comprises material selection, cutting, cleaning and crushing; the invention can crush the waste plastic bottles thoroughly by adopting a pretreatment multi-stage crushing mode when recycling the pesticide waste plastic bottles, is convenient for subsequent operation, meanwhile, the molecules of the materials can be separated thoroughly by adding the disintegrating agent when recycling the pesticide waste plastic bottles, the subsequent mixing is convenient, and the interface bonding degree of the prepared pesticide bottles is enhanced by adding the maleic anhydride grafted polylactic acid when mixing, so that gaps of the pesticide bottles are greatly reduced, the water absorption rate is obviously reduced, and the water resistance is improved, thereby being beneficial to prolonging the shelf life of the pesticide bottles.
Description
Technical Field
The invention belongs to the technical field of resource recycling, and particularly relates to a recycling method of pesticide package waste plastic bottles.
Background
The plastic bottle is mainly made of polyethylene or polypropylene and various organic solvents, polyester (PET), polyethylene (PE) and polypropylene (PP) are widely used as raw materials, after the corresponding organic solvents are added, the plastic bottle is heated at high temperature and then is subjected to blow molding, extrusion blowing or injection molding through a plastic mold, and the pesticide plastic bottle is a plastic bottle for containing pesticides and is widely applied to agriculture.
At present, most pesticides are scattered and placed in disorder after being used in pesticide plastic bottles, or are recycled by a recycling station, then the stickers of the plastic bottle bodies of the pesticide waste plastic bottles are removed, and then the pesticide waste plastic bottles are processed;
however, the operation mode for removing the sticker is complicated, wastes the processing time of workers, reduces the recovery efficiency of the pesticide waste plastic bottles, and is not beneficial to large-scale popularization.
Therefore, a recycling method of the waste plastic bottles for pesticide packages is provided by the person skilled in the art to solve the problems provided by the background art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a recycling method for pesticide package waste plastic bottles, which aims to solve the problems that the operation mode of removing the sticker is complicated, the processing time of workers is wasted, the recycling efficiency of the pesticide waste plastic bottles is reduced, the large-scale popularization is not facilitated, and the like in the prior art.
The recycling method of the pesticide package waste plastic bottle comprises the following steps:
s1, pretreatment
(1) Selecting materials; firstly, a certain number of pesticide packages are selected to be used as waste plastic bottles;
(2) cutting: cutting the waste plastic bottles in the middle by a cutting machine to obtain half waste plastic bottles;
(3) cleaning: the half-and-half waste plastic bottles are abandoned and the leaking net is put into the cleaning, and then the half-and-half waste plastic bottles are dried for standby;
(4) crushing: setting a multistage crusher, and then placing the dried waste plastic bottles into the crusher for multistage crushing treatment to obtain plastic sheets;
s2, decomposing: putting the plastic sheet in the step S1 into a reaction kettle, then adding a disintegrating agent, heating the reaction kettle, and stirring by adopting a stirring rod until the plastic sheet is completely dissolved to obtain a solution A;
s3, filtering: pouring the solution A in the step S2 into a filter to filter impurities to obtain a solution B;
s4, mixing: putting the solution B in the step S3 into a mixer, then adding maleic anhydride grafted polylactic acid, and then playing a role of the mixer to mix internal liquid at a high speed to obtain a solution C;
s5, forming: and finally, placing the solution C in a mould for processing and forming to prepare the pesticide bottle.
Preferably, in step S1 (3), the cleaning is performed by washing and repeating the washing a plurality of times.
Preferably, in step S2, the temperature of the reaction kettle is controlled to be 290 ℃, and the reaction kettle is in a vacuumized environment.
Preferably, the operation environment in S3 is performed under continuous temperature control.
Preferably, in step S4, the concentration of the maleic anhydride-grafted polylactic acid is 3%.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can crush the waste plastic bottles thoroughly by adopting a pretreatment multi-stage crushing mode when recycling the pesticide waste plastic bottles, is convenient for subsequent operation, meanwhile, the molecules of the materials can be separated thoroughly by adding the disintegrating agent when recycling the pesticide waste plastic bottles, the subsequent mixing is convenient, and the interface bonding degree of the prepared pesticide bottles is enhanced by adding the maleic anhydride grafted polylactic acid when mixing, so that gaps of the pesticide bottles are greatly reduced, the water absorption rate is obviously reduced, the water resistance is improved, and the shelf life of the pesticide bottles is prolonged.
2. The invention has simple operation steps and is suitable for large-area popularization.
Drawings
Fig. 1 is a flow chart of a recycling method of pesticide package waste plastic bottles.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
As shown in fig. 1:
examples: the invention provides a recycling method of pesticide package waste plastic bottles, which comprises the following steps:
s1, pretreatment
(1) Selecting materials; firstly, a certain number of pesticide packages are selected to be used as waste plastic bottles;
(2) cutting: cutting the waste plastic bottles in the middle by a cutting machine to obtain half waste plastic bottles;
(3) cleaning: the half waste plastic bottles are abandoned to be washed on the drain net, the washing mode is that washing is carried out, repeated times are carried out, and then the half waste plastic bottles are dried for standby;
(4) crushing: setting a multistage crusher, and then placing the dried waste plastic bottles into the crusher for multistage crushing treatment to obtain plastic sheets;
s2, decomposing: putting the plastic sheet in the step S1 into a reaction kettle, then adding a disintegrating agent, controlling the temperature of the reaction kettle to be 290 ℃, and controlling the reaction kettle to be in a vacuumized environment, then heating the reaction kettle and stirring by adopting a stirring rod until the plastic sheet is completely dissolved to obtain a solution A;
s3, filtering: pouring the solution A in the step S2 into a filter to filter impurities to obtain a solution B, wherein the operation environment in the step S3 is continuously controlled in temperature;
s4, mixing: putting the solution B in the step S3 into a mixer, adding 3% of maleic anhydride grafted polylactic acid, and then performing high-speed mixing on internal liquid by using the mixer to obtain a solution C;
s5, forming: and finally, placing the solution C in a mould for processing and forming to prepare the pesticide bottle.
According to the pesticide waste plastic bottle, the waste plastic bottle can be broken thoroughly by adopting a pretreatment multi-stage breaking mode when being recycled, the subsequent operation is convenient, meanwhile, the molecules of the materials can be separated thoroughly by adding the disintegrating agent when being recycled, the subsequent mixing is convenient, and the interface bonding degree of the prepared pesticide bottle is enhanced by adding the maleic anhydride grafted polylactic acid when being mixed, so that gaps of the pesticide bottle are greatly reduced, the water absorption rate is obviously reduced, the water resistance is improved, and the shelf life of the pesticide bottle is prolonged.
To verify the success of the above method, the skilled person performs the following experiments: 10 pesticide bottles are randomly selected for experiment, and the heat resistance, cold resistance and high temperature resistance are tested, so that the following results are obtained:
| grouping | Heat resistant | Cold resistance | Bearing high temperatures | Interfacial bonding degree |
| Experimental group | 72℃ | -25℃ | 95℃+ | Level 1 |
| Control group | 65℃ | -20℃ | 90℃+ | Level 2 |
From the table, the effect of the method for preparing the pesticide bottle is obviously improved, and the method is simple in operation steps and suitable for large-area popularization.
While embodiments of the present invention have been shown and described above for purposes of illustration and description, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (5)
1. A recycling method of pesticide package waste plastic bottles is characterized by comprising the following steps: the method comprises the following steps:
s1, pretreatment
(1) Selecting materials; firstly, a certain number of pesticide packages are selected to be used as waste plastic bottles;
(2) cutting: cutting the waste plastic bottles in the middle by a cutting machine to obtain half waste plastic bottles;
(3) cleaning: the half-and-half waste plastic bottles are abandoned and the leaking net is put into the cleaning, and then the half-and-half waste plastic bottles are dried for standby;
(4) crushing: setting a multistage crusher, and then placing the dried waste plastic bottles into the crusher for multistage crushing treatment to obtain plastic sheets;
s2, decomposing: putting the plastic sheet in the step S1 into a reaction kettle, then adding a disintegrating agent, heating the reaction kettle, and stirring by adopting a stirring rod until the plastic sheet is completely dissolved to obtain a solution A;
s3, filtering: pouring the solution A in the step S2 into a filter to filter impurities to obtain a solution B;
s4, mixing: putting the solution B in the step S3 into a mixer, then adding maleic anhydride grafted polylactic acid, and then playing a role of the mixer to mix internal liquid at a high speed to obtain a solution C;
s5, forming: and finally, placing the solution C in a mould for processing and forming to prepare the pesticide bottle.
2. The method for recycling the pesticide package waste plastic bottles according to claim 1, which is characterized in that: in step S1 (3), the cleaning is performed by rinsing and repeated a plurality of times.
3. The method for recycling the pesticide package waste plastic bottles according to claim 1, which is characterized in that: in step S2, the temperature of the reaction kettle is controlled to 290 ℃, and the reaction kettle is in a vacuumized environment.
4. The method for recycling the pesticide package waste plastic bottles according to claim 1, which is characterized in that: the operation environment in the step S3 is continuously controlled in temperature.
5. The method for recycling the pesticide package waste plastic bottles according to claim 1, which is characterized in that: in step S4, the concentration of the maleic anhydride-grafted polylactic acid is 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310991943.4A CN116945422A (en) | 2023-08-08 | 2023-08-08 | Method for recycling pesticide package waste plastic bottles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310991943.4A CN116945422A (en) | 2023-08-08 | 2023-08-08 | Method for recycling pesticide package waste plastic bottles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116945422A true CN116945422A (en) | 2023-10-27 |
Family
ID=88452925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310991943.4A Pending CN116945422A (en) | 2023-08-08 | 2023-08-08 | Method for recycling pesticide package waste plastic bottles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116945422A (en) |
-
2023
- 2023-08-08 CN CN202310991943.4A patent/CN116945422A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |