CN106167544A - A kind of waste and old polyester recycling system - Google Patents
A kind of waste and old polyester recycling system Download PDFInfo
- Publication number
- CN106167544A CN106167544A CN201610483765.4A CN201610483765A CN106167544A CN 106167544 A CN106167544 A CN 106167544A CN 201610483765 A CN201610483765 A CN 201610483765A CN 106167544 A CN106167544 A CN 106167544A
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- China
- Prior art keywords
- alcoholysis
- waste
- polyester
- screw rod
- precondensation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
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- Chemical & Material Sciences (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 belongs to resource regeneration field, the present invention relates to a kind of waste and old polyester recycling system, the present invention utilizes the polyester waste material of recovery to produce polyester granules; not only save natural resources; and decrease white pollution, protect environment, there is preferable economic benefit and social benefit；The solvent used in removal process can recycle, it is achieved the recycling economy of PET industry.
Description
Technical field
The present invention relates to resource regeneration field, particularly relate to a kind of waste and old polyester recycling system.
Background technology
Waste polyester recovery technology is divided into physiochemical mutagens technology and the big class of chemical recovery techniques two.Physiochemical mutagens is by discarded
Polyester adds heat fusing, and by screw extruder extrusion molding after purification, general process is: classification-broken-clean-dehydration-dry
Dry-pelletize (spinning).Chemical recovery techniques includes hydrolysis, glycolysis and Methanol Decomposition.For polyester, generally by these sides
Method is combined with first depolymehzation step, and described just depolymehzation step is by adding thermopolymer and/or dissolving the polymer in oligomer, monomer
(such as ethylene glycol) or water complete.Chemical recovery method also includes being chemically modified, generally use chain modified, cross-linking modified,
Chlorination modified grade changes the chain length of polyester, structure, thus improves its some characteristic.
Summary of the invention
The present invention provides a kind of waste and old polyester recycling system, and this system can recycle Waste Polyester, and recovery obtains
Polyester granules recycles, and realizes recycling of recycling design simultaneously.For achieving the above object, the present invention uses following skill
Art scheme:
The system of a kind of waste and old polyester recycling, comprises the following steps:
(1) enter screw rod melt element through feed bin after waste polyester raw material is broken, and carry out toward screw rod addition ethylene glycol simultaneously
Partial alcoholysis；
(2) material being melting out through screw rod enters alcoholysis still, carries out secondary alcoholysis；
(3) material after the further alcoholysis of alcoholysis still enters precondensation unit, adds catalyst abjection alcohol before entering precondensation
Solve the little molecule in thing；
(4) material after precondensation stage processes carries out the poly-process of final minification, obtains polycondensation polymer melt；
(5) cooling cracking final minification poly polymer melt is until it is solid phase, is cut into polyester granules.
Further, adding ethylene glycol in described step (1) is 5～20% with material rate.
Owing to using technique scheme, there is advantages that
The present invention utilizes the polyester waste material of recovery to produce polyester granules, not only saves natural resources, and decreases white pollution,
Protect environment, there is preferable economic benefit and social benefit；The solvent used in removal process can recycle, it is achieved
The recycling economy of PET industry.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the system flow chart of the present invention.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
All other embodiments that technical staff is obtained under not making creative work premise, broadly fall into the model of present invention protection
Enclose.
Embodiment 1
Weigh waste and old polyester 100kg/h, enter screw rod and melt, add ethylene glycol 15kg/h toward screw rod simultaneously, in normal pressure, temperature be
Alcoholysis 25min at 200 DEG C, the material being melting out through screw rod enters alcoholysis still, carries out further alcoholysis under tiny structure, temperature
Degree is alcoholysis 15min at 220 DEG C, it is ensured that the abundant alcoholysis of Waste Polyester raw material, and the ethylene glycol that this stage extracts out enters at ethylene glycol
Reason system.Material after the further alcoholysis of alcoholysis still enters precondensation stage, adds catalyst before entering precondensation stage
0.2g, the catalyst glycol concentration being made into is 15%, and reaction temperature is 265 DEG C, and the response time is 90min, in abjection alcoholysate
Little molecule, the most partially polymerized, the material after precondensation processes enters final minification and gathers, and reaction temperature is 285 DEG C, and reaction is seasonable
Between be 100min, the abjection little molecule such as ethylene glycol, obtain polyester granules.
Embodiment 2
Weigh waste and old polyester 120kg/h, enter screw rod and melt, add ethylene glycol 18kg/h toward screw rod simultaneously, in normal pressure, temperature be
Alcoholysis 25min at 200 DEG C, the material being melting out through screw rod enters alcoholysis still, carries out further alcoholysis under tiny structure, temperature
Degree is alcoholysis 15min at 220 DEG C, it is ensured that the abundant alcoholysis of Waste Polyester raw material, and the ethylene glycol that this stage extracts out enters at ethylene glycol
Reason system.Material after the further alcoholysis of alcoholysis still enters precondensation stage, adds catalyst before entering precondensation stage
0.25g, the catalyst glycol concentration being made into is 15%, and reaction temperature is 265 DEG C, and the response time is 90min, deviates from alcoholysate
In little molecule, the most partially polymerized, through precondensation process after material enter final minification gather, reaction temperature is 285 DEG C, reaction should
The little molecules such as the time is 100min, abjection ethylene glycol, obtain polyester granules.
Embodiment 3
Weigh waste and old polyester 150kg/h, enter screw rod and melt, add ethylene glycol 22.5kg/h toward screw rod, in normal pressure, temperature simultaneously
Being alcoholysis 25min at 200 DEG C, the material being melting out through screw rod enters alcoholysis still, carries out further alcoholysis under tiny structure,
Temperature is alcoholysis 15min at 220 DEG C, it is ensured that the abundant alcoholysis of Waste Polyester raw material, and the ethylene glycol that this stage extracts out enters ethylene glycol
Processing system.Material after the further alcoholysis of alcoholysis still enters precondensation stage, adds catalysis before entering precondensation stage
Agent 0.3g, the catalyst glycol concentration being made into is 15%, and reaction temperature is 265 DEG C, and the response time is 90min, deviates from alcoholysate
In little molecule, the most partially polymerized, through precondensation process after material enter final minification gather, reaction temperature is 285 DEG C, reaction should
The little molecules such as the time is 100min, abjection ethylene glycol, obtain polyester granules.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description is made convert, or are directly or indirectly used in other relevant technology neck
Territory, is the most in like manner included in the scope of patent protection of the present invention.
Claims (2)
1. a waste and old polyester recycling system, comprises the following steps:
(1) enter screw rod melt element through feed bin after waste polyester raw material is broken, and carry out toward screw rod addition ethylene glycol simultaneously
Partial alcoholysis；
(2) material being melting out through screw rod enters alcoholysis still, carries out secondary alcoholysis；
(3) material after the further alcoholysis of alcoholysis still enters precondensation unit, adds catalyst abjection alcohol before entering precondensation
Solve the little molecule in thing；
(4) material after precondensation stage processes carries out the poly-process of final minification, obtains polycondensation polymer melt；
(5) cooling cracking final minification poly polymer melt is until it is solid phase, is cut into polyester granules.
The most according to claim 1, a kind of waste and old polyester recycling system, is characterized in that: adds second in described step (1)
Glycol and material rate are 5～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610483765.4A CN106167544A (en) | 2016-06-28 | 2016-06-28 | A kind of waste and old polyester recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610483765.4A CN106167544A (en) | 2016-06-28 | 2016-06-28 | A kind of waste and old polyester recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106167544A true CN106167544A (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610483765.4A Pending CN106167544A (en) | 2016-06-28 | 2016-06-28 | A kind of waste and old polyester recycling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106167544A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266663A (en) * | 2017-07-03 | 2017-10-20 | 福建锦兴环保科技有限公司 | A kind of technique of utilization PET powder production recycled polyesters |
| CN109575358A (en) * | 2018-12-18 | 2019-04-05 | 中国石油天然气集团有限公司 | Waste polyester film recyclable device and method |
| CN110511137A (en) * | 2019-07-10 | 2019-11-29 | 福建赛隆科技有限公司 | A kind of continuous transesterification recovery method of waste and old polyester material continuous alcoholysis |
| CN110527138A (en) * | 2019-07-10 | 2019-12-03 | 艾凡佳德(上海)环保科技有限公司 | A kind of continuous alcoholysis recovery method of waste and old polyester |
| CN114989400A (en) * | 2022-07-05 | 2022-09-02 | 河南源宏高分子新材料有限公司 | Preparation method of chemically regenerated PETG polyester |
| CN116675839A (en) * | 2023-06-29 | 2023-09-01 | 华东理工大学 | Method for preparing PETG/PCTG copolyester by using waste PET |
-
2016
- 2016-06-28 CN CN201610483765.4A patent/CN106167544A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266663A (en) * | 2017-07-03 | 2017-10-20 | 福建锦兴环保科技有限公司 | A kind of technique of utilization PET powder production recycled polyesters |
| CN107266663B (en) * | 2017-07-03 | 2019-11-22 | 福建锦兴环保科技有限公司 | A kind of technique using PET powder production recycled polyester |
| CN109575358A (en) * | 2018-12-18 | 2019-04-05 | 中国石油天然气集团有限公司 | Waste polyester film recyclable device and method |
| CN109575358B (en) * | 2018-12-18 | 2022-02-18 | 中国石油天然气集团有限公司 | Waste polyester film recovery device and method |
| CN110511137A (en) * | 2019-07-10 | 2019-11-29 | 福建赛隆科技有限公司 | A kind of continuous transesterification recovery method of waste and old polyester material continuous alcoholysis |
| CN110527138A (en) * | 2019-07-10 | 2019-12-03 | 艾凡佳德(上海)环保科技有限公司 | A kind of continuous alcoholysis recovery method of waste and old polyester |
| CN110527138B (en) * | 2019-07-10 | 2020-07-03 | 艾凡佳德(上海)环保科技有限公司 | Continuous alcoholysis recovery method of waste polyester |
| CN114989400A (en) * | 2022-07-05 | 2022-09-02 | 河南源宏高分子新材料有限公司 | Preparation method of chemically regenerated PETG polyester |
| CN116675839A (en) * | 2023-06-29 | 2023-09-01 | 华东理工大学 | Method for preparing PETG/PCTG copolyester by using waste PET |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161130 |
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| WD01 | Invention patent application deemed withdrawn after publication |