CN107813439A - A kind of plastics recovery method - Google Patents
A kind of plastics recovery method Download PDFInfo
- Publication number
- CN107813439A CN107813439A CN201710827806.1A CN201710827806A CN107813439A CN 107813439 A CN107813439 A CN 107813439A CN 201710827806 A CN201710827806 A CN 201710827806A CN 107813439 A CN107813439 A CN 107813439A
- Authority
- CN
- China
- Prior art keywords
- plastics
- solvent
- recovery method
- phase separation
- separation agent
- 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
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000013527 degreasing agent Substances 0.000 claims abstract description 7
- 239000002689 soil Substances 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000001556 precipitation Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000010298 pulverizing process Methods 0.000 claims abstract description 4
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000005191 phase separation Methods 0.000 claims description 18
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical group CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000005238 degreasing Methods 0.000 abstract description 2
- 230000002101 lytic effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
- C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
-
- 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
- B29B2017/001—Pretreating the materials before recovery
- B29B2017/0015—Washing, rinsing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a kind of plastics recovery method, it is characterized in that, mainly comprise the following steps：Step 1：Precipitation, is rinsed in pond with water, after standing, removes the impurity such as soil；Step 2：Plastics are cleaned by washing with degreaser；Step 3：Crush, the plastics to degrease are subjected to pulverization process；Step 4：Dissolving；Step 5：Reclaim, the plastic grain thing in recycling step four.Advantage：The present invention passes through multistep treatment, precipitation can remove the impurity such as soil, by being washed except oil solvent, go out the organic matters such as degreasing, drying process after cleaning, facilitate crushed work, after plastic crushing, its total surface area can be greatly improved, the operation such as separates again finally by lytic agent dissolving plastic grain, obtains the very tiny particle that can be reused.
Description
Technical field
The present invention relates to a kind of plastics recovery method.
Background technology
In daily life and research and production, substantial amounts of waste plastic can be all produced daily, because plastics are macromolecule
Material, it is not easy to degrade, directly bury, not only waste apprentice's resource of preciousness, and have a significant impact to soil, burning processing
Equally other pollution environment can be harmful to because of generation and forbidden；Therefore how the processing waste plastic of environmental protection is non-as one
The problem of Chang Guanjian.
The content of the invention
The technical problems to be solved by the invention are the defects of overcoming prior art, there is provided a kind of plastics recovery method, energy
Enough more environmentally-friendly processing waste plastics.
In order to solve the above technical problems, the present invention provides a kind of plastics recovery method, it is characterized in that, it is main to include following step
Suddenly：
Step 1：Precipitation, is rinsed in pond with water, after standing, removes the impurity such as soil；
Step 2：Plastics are cleaned by washing with degreaser, and the organic matter such as degrease, after then being rinsed with clear water again
Drying process；
Step 3：Crush, the plastics to degrease are subjected to pulverization process；
Step 4：Dissolving, the dissolution solvent that can dissolve plastics is fully contacted with the plastics after crushing, and is deposited in phase separation agent
Under, precipitate the plastics that are dissolved in the decomposition solvent with non-solvent, wherein the phase separation agent it is compatible with decomposition solvent and
Incompatible with non-solvent, and when making plastics and solvent contact, there is also and can improve solvent to plastics to the phase separation agent
Dissolving；
Step 5：Reclaim, the plastic grain thing in recycling step four.
Further, the degreaser is using acetone, ethyl acetate mixture.
Further, the grinding particle size control is in 650-750 mesh.
Further, in the step 4, pressure is made to be reduced to below atmospheric pressure during non-solvent is gradually added into.
Further, the plastics are PVC, and solvent is MEK, and non-solvent is water, and phase separation agent is n-hexane.
Further, according to method：
1）PVC is contacted with solvent and phase separation agent and make its dissolving；
2）The PVC of dissolving in a solvent is precipitated by injecting steam in the solution to production, this causes solvent and phase separation agent
Removed by evaporating, so as to form the remaining mixture being made up of substantially water and PVC solid particles；
3）Reclaim the PVC granule.
The beneficial effect that the present invention is reached：
The present invention can remove the impurity such as soil by multistep treatment, precipitation, and by being washed except oil solvent, it is organic to go out degreasing etc.
Thing, drying process after cleaning, facilitates crushed work, after plastic crushing, can greatly improve its total surface area, finally by
Lytic agent dissolving plastic grain such as separates at the operation again, obtains the very tiny particle that can be reused.
Embodiment
The following examples are only intended to illustrate the technical solution of the present invention more clearly, and can not limit the present invention with this
Protection domain.
A kind of plastics recovery method, it is characterized in that, mainly comprise the following steps：
Step 1：Precipitation, is rinsed in pond with water, after standing, removes the impurity such as soil；
Step 2：Plastics are cleaned by washing with degreaser, and the organic matter such as degrease, after then being rinsed with clear water again
Drying process；
Step 3：Crush, the plastics to degrease are subjected to pulverization process；
Step 4：Dissolving, the dissolution solvent that can dissolve plastics is fully contacted with the plastics after crushing, and is deposited in phase separation agent
Under, precipitate the plastics that are dissolved in the decomposition solvent with non-solvent, wherein the phase separation agent it is compatible with decomposition solvent and
Incompatible with non-solvent, and when making plastics and solvent contact, there is also and can improve solvent to plastics to the phase separation agent
Dissolving；
Step 5：Reclaim, the plastic grain thing in recycling step four.
In the present embodiment, the degreaser is using acetone, ethyl acetate mixture.
In the present embodiment, the grinding particle size control is in 650 mesh.
In the present embodiment, in the step 4, make during non-solvent is gradually added into pressure be reduced to atmospheric pressure with
Under.
In the present embodiment, the plastics are PVC, and solvent is MEK, and non-solvent is water, and phase separation agent is n-hexane.
In the present embodiment, according to method：
1）PVC is contacted with solvent and phase separation agent and make its dissolving；
2）The PVC of dissolving in a solvent is precipitated by injecting steam in the solution to production, this causes solvent and phase separation agent
Removed by evaporating, so as to form the remaining mixture being made up of substantially water and PVC solid particles；
3）Reclaim the PVC granule.
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 (6)
1. a kind of plastics recovery method, it is characterized in that, mainly comprise the following steps：
Step 1：Precipitation, is rinsed in pond with water, after standing, removes the impurity such as soil；
Step 2：Plastics are cleaned by washing with degreaser, and the organic matter such as degrease, after then being rinsed with clear water again
Drying process；
Step 3：Crush, the plastics to degrease are subjected to pulverization process；
Step 4：Dissolving, the dissolution solvent that can dissolve plastics is fully contacted with the plastics after crushing, and is deposited in phase separation agent
Under, precipitate the plastics that are dissolved in the decomposition solvent with non-solvent, wherein the phase separation agent it is compatible with decomposition solvent and
Incompatible with non-solvent, and when making plastics and solvent contact, there is also and can improve solvent to plastics to the phase separation agent
Dissolving；
Step 5：Reclaim, the plastic grain thing in recycling step four.
2. a kind of plastics recovery method according to claim 1, it is characterized in that, the degreaser is using acetone, acetic acid
Ethyl ester mixture.
3. a kind of plastics recovery method according to claim 1, it is characterized in that, the grinding particle size control is in 650-750
Mesh.
4. a kind of plastics recovery method according to claim 1, it is characterized in that, it is non-being gradually added into the step 4
Pressure is set to be reduced to below atmospheric pressure during solvent.
5. a kind of plastics recovery method according to claim 1, it is characterized in that, the plastics are PVC, and solvent is MEK, non-
Solvent is water, and phase separation agent is n-hexane.
6. a kind of plastics recovery method according to claim 5, it is characterized in that, according to method：
1）PVC is contacted with solvent and phase separation agent and make its dissolving；
2）The PVC of dissolving in a solvent is precipitated by injecting steam in the solution to production, this causes solvent and phase separation agent
Removed by evaporating, so as to form the remaining mixture being made up of substantially water and PVC solid particles；
3）Reclaim the PVC granule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827806.1A CN107813439A (en) | 2017-09-14 | 2017-09-14 | A kind of plastics recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827806.1A CN107813439A (en) | 2017-09-14 | 2017-09-14 | A kind of plastics recovery method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107813439A true CN107813439A (en) | 2018-03-20 |
Family
ID=61607179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710827806.1A Pending CN107813439A (en) | 2017-09-14 | 2017-09-14 | A kind of plastics recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107813439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112318777A (en) * | 2020-10-16 | 2021-02-05 | 江苏广创环保科技有限公司 | Crushing and cleaning method for PET plastic recycling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430640A (en) * | 2000-03-23 | 2003-07-16 | 索尔维公司 | Method for recycling plastic material |
| CN104354243A (en) * | 2014-11-28 | 2015-02-18 | 上海承瑶环保科技有限公司 | System for cleaning and reusing polyester or plastic fragments and technology of system |
| CN106608002A (en) * | 2015-10-24 | 2017-05-03 | 邹贝尔 | Plastic recovery method |
-
2017
- 2017-09-14 CN CN201710827806.1A patent/CN107813439A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430640A (en) * | 2000-03-23 | 2003-07-16 | 索尔维公司 | Method for recycling plastic material |
| CN104354243A (en) * | 2014-11-28 | 2015-02-18 | 上海承瑶环保科技有限公司 | System for cleaning and reusing polyester or plastic fragments and technology of system |
| CN106608002A (en) * | 2015-10-24 | 2017-05-03 | 邹贝尔 | Plastic recovery method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112318777A (en) * | 2020-10-16 | 2021-02-05 | 江苏广创环保科技有限公司 | Crushing and cleaning method for PET plastic recycling |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180320 |