PL411850A1 - Method for decolourising of PET polyethylene terephthalate wastes - Google Patents
Method for decolourising of PET polyethylene terephthalate wastesInfo
- Publication number
- PL411850A1 PL411850A1 PL411850A PL41185015A PL411850A1 PL 411850 A1 PL411850 A1 PL 411850A1 PL 411850 A PL411850 A PL 411850A PL 41185015 A PL41185015 A PL 41185015A PL 411850 A1 PL411850 A1 PL 411850A1
- Authority
- PL
- Poland
- Prior art keywords
- pet
- polyethylene terephthalate
- extractants
- carried out
- stage
- Prior art date
Links
Classifications
-
- 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
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
- C08J11/22—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
- C08J11/24—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- Chemical & Material Sciences (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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Przedmiotem zgłoszenia jest sposób odbarwiania odpadów politereftalanu etylenu PET. Wstępnie rozdrobnione kolorowe odpady PET poddaje się roztworzeniu w wysoko wrzącym alkoholu jednowodorotlenowym lub wielowodorotlenowym lub w ich mieszaninach z dodatkiem katalizatorów alkalicznych lub kwasowych, w podwyższonej temperaturze w zakresie od 150°C do 260°C. Po roztworzeniu otrzymaną masę poddaje się filtrowaniu i ochłodzeniu do temperatury powyżej 60°C. Następnie prowadzi się proces ekstrakcji pod ciśnieniem normalnym lub podwyższonym z zastosowaniem ekstrahentów w postaci rozpuszczalników organicznych o gęstości mniejszej lub większej, co najmniej o 100 kg/m3 od gęstości roztworu PET w mieszaninie roztwarzającej. Ekstrakcję prowadzi się w instalacjach jednostopniowych lub wielostopniowych w procesie okresowym lub korzystnie w procesie ciągłym. Otrzymany odbarwiony PET odprowadza się do zbiornika magazynowego (6). Zabarwione ekstrahenty poddaje się regeneracji, korzystnie przez destylację i zawraca się do kolejnego cyklu produkcyjnego.The subject of the application is a method for decolorizing polyethylene terephthalate PET waste. Pre-ground colored PET waste is dissolved in high boiling monohydric or polyhydric alcohol or in mixtures thereof with the addition of alkali or acid catalysts, at elevated temperatures ranging from 150 ° C to 260 ° C. After reconstitution, the obtained mass is subjected to filtration and cooling to a temperature above 60 ° C. The extraction process is then carried out at normal or elevated pressure with the use of extractants in the form of organic solvents with a density lower or higher, at least by 100 kg / m3 from the density of the PET solution in the pulping mixture. The extraction is carried out in single-stage or multi-stage installations in a batch process or preferably in a continuous process. The resulting deinked PET is discharged into a storage tank (6). The colored extractants are regenerated, preferably by distillation, and recycled to the next production cycle.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL411850A PL411850A1 (en) | 2015-04-01 | 2015-04-01 | Method for decolourising of PET polyethylene terephthalate wastes |
PCT/PL2015/000072 WO2016159800A1 (en) | 2015-04-01 | 2015-04-29 | The method for de-colorization of polyethylene terephthalate pet waste |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL411850A PL411850A1 (en) | 2015-04-01 | 2015-04-01 | Method for decolourising of PET polyethylene terephthalate wastes |
Publications (1)
Publication Number | Publication Date |
---|---|
PL411850A1 true PL411850A1 (en) | 2016-10-10 |
Family
ID=53267538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL411850A PL411850A1 (en) | 2015-04-01 | 2015-04-01 | Method for decolourising of PET polyethylene terephthalate wastes |
Country Status (2)
Country | Link |
---|---|
PL (1) | PL411850A1 (en) |
WO (1) | WO2016159800A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2570019B (en) * | 2018-09-17 | 2021-04-21 | Impact Laboratories Ltd | Plastic recycling process |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL209741A1 (en) | 1978-09-21 | 1980-05-05 | Politechnika Warszawska | |
ATE182578T1 (en) * | 1992-05-18 | 1999-08-15 | Swig Pty Ltd | PURIFICATION OF POLYETHYLENE TEREPHTHALATES |
US6083283A (en) | 1996-10-24 | 2000-07-04 | Solutia Inc. | Method for removing color from ionically dyeable polymeric materials |
JP2004217871A (en) * | 2003-01-17 | 2004-08-05 | Teijin Fibers Ltd | Method of recovering useful components from dyed polyester fiber |
AU2004315532B2 (en) | 2003-02-27 | 2010-01-28 | Perpetual Technologies Gmbh | A method for the decontamination of polyethylene terephthalate |
US20060148914A1 (en) | 2005-01-04 | 2006-07-06 | Connor Daniel M | Methods and compositions for decolorizing thermoplastics and articles made using such decolorized thermoplastics |
RU2404204C2 (en) * | 2005-08-05 | 2010-11-20 | Тейдзин Файберз Лимитед | Method of extracting useful components from dyed polyester fibre |
JP4537288B2 (en) * | 2005-08-08 | 2010-09-01 | 帝人ファイバー株式会社 | Method for recovering active ingredients from dyed polyester fiber |
-
2015
- 2015-04-01 PL PL411850A patent/PL411850A1/en unknown
- 2015-04-29 WO PCT/PL2015/000072 patent/WO2016159800A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2016159800A1 (en) | 2016-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MY158282A (en) | Method for treating tropical plant waste or woody waste and method for recycling the same | |
ES2518218T3 (en) | Improved preremove procedure for biomass conversion | |
RU2017108144A (en) | A CLOSED METHOD FOR PRODUCING FURFUROL FROM BIOMASS | |
MX362811B (en) | Clean method for preparing d,l-methionine. | |
MY170957A (en) | Method for producing lignin degradation product | |
RU2014151753A (en) | METHODS FOR REMOVING HEMICELLULOSE | |
CN105087166A (en) | Method for extracting Jasminum sambac essential oil | |
AR100300A1 (en) | PROCESS FOR THE PRODUCTION OF 1,4-BUTANODIOL | |
PL411850A1 (en) | Method for decolourising of PET polyethylene terephthalate wastes | |
CO2020006258A2 (en) | Process for preparing large isoxazoline particles | |
CN104030924A (en) | Method for recovering and refining benzyl benzoate | |
MY187099A (en) | Use of edible-oil-processing spent bleaching earth in formulating poultry and livestock feed products | |
Mohamed et al. | The effects of process parameters on the pyrolysis of empty fruit bunch (EFB) using a fixed-bed reactor | |
CN102702122A (en) | Method for preparing tetrazine by oxidizing dihydro tetrazine | |
CN101469377B (en) | Technique for extracting rhenium in recovered solution by centrifuge extracting machine | |
CN104211658B (en) | The production method of new type rubber sulphur accelerant MBT | |
MX2015005343A (en) | Pure plant mother liquor solvent extraction system and method. | |
CN104118890A (en) | Method for producing potassium (sodium) sulfate at low temperature | |
CN203990564U (en) | A kind of reaction unit for chemical industry | |
CN105152875B (en) | A kind of method reclaiming double trimethylolpropane the residual liquid from trimethylolpropane | |
CN104530749A (en) | Method for extracting natural pigment from bark | |
CN101580453B (en) | Process for extracting abandoned benzene chloride from waste liquor | |
CN101671038A (en) | Method for comprehensively utilizing solid waste in methyl carbonate production | |
CN106316875A (en) | Method for recycling N,N-dimethylformamide from alprazolam intermediate refined mother liquor | |
CN107903223A (en) | Solvent recovery separation method containing tetrahydrofuran-methanol system |