JP3917811B2 - 回収ポリエチレンテレフタレート粉砕品からのテレフタル酸の工業的回収方法 - Google Patents
回収ポリエチレンテレフタレート粉砕品からのテレフタル酸の工業的回収方法 Download PDFInfo
- Publication number
- JP3917811B2 JP3917811B2 JP2000347848A JP2000347848A JP3917811B2 JP 3917811 B2 JP3917811 B2 JP 3917811B2 JP 2000347848 A JP2000347848 A JP 2000347848A JP 2000347848 A JP2000347848 A JP 2000347848A JP 3917811 B2 JP3917811 B2 JP 3917811B2
- Authority
- JP
- Japan
- Prior art keywords
- terephthalic acid
- terephthalate
- tank
- polyethylene terephthalate
- aqueous solution
- 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.)
- Expired - Lifetime
Links
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title claims description 159
- 229920000139 polyethylene terephthalate Polymers 0.000 title claims description 40
- 239000005020 polyethylene terephthalate Substances 0.000 title claims description 40
- -1 polyethylene terephthalate Polymers 0.000 title claims description 20
- 238000011084 recovery Methods 0.000 title claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 51
- 239000007864 aqueous solution Substances 0.000 claims description 48
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 48
- 238000000354 decomposition reaction Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 35
- 239000002253 acid Substances 0.000 claims description 33
- 239000013078 crystal Substances 0.000 claims description 31
- 239000000047 product Substances 0.000 claims description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 27
- 239000002002 slurry Substances 0.000 claims description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000003513 alkali Substances 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 32
- 238000005406 washing Methods 0.000 description 24
- 238000003756 stirring Methods 0.000 description 22
- 239000012535 impurity Substances 0.000 description 21
- 238000000926 separation method Methods 0.000 description 21
- 239000007788 liquid Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 18
- 239000000706 filtrate Substances 0.000 description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 238000001556 precipitation Methods 0.000 description 13
- 150000001447 alkali salts Chemical class 0.000 description 11
- 238000003828 vacuum filtration Methods 0.000 description 11
- 239000004744 fabric Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000010517 secondary reaction Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000034659 glycolysis Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 238000006140 methanolysis reaction Methods 0.000 description 2
- 239000013081 microcrystal Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 150000003503 terephthalic acid derivatives Chemical class 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
Classifications
-
- 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
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000347848A JP3917811B2 (ja) | 2000-11-15 | 2000-11-15 | 回収ポリエチレンテレフタレート粉砕品からのテレフタル酸の工業的回収方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000347848A JP3917811B2 (ja) | 2000-11-15 | 2000-11-15 | 回収ポリエチレンテレフタレート粉砕品からのテレフタル酸の工業的回収方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002155020A JP2002155020A (ja) | 2002-05-28 |
| JP2002155020A5 JP2002155020A5 (enExample) | 2005-04-07 |
| JP3917811B2 true JP3917811B2 (ja) | 2007-05-23 |
Family
ID=18821520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000347848A Expired - Lifetime JP3917811B2 (ja) | 2000-11-15 | 2000-11-15 | 回収ポリエチレンテレフタレート粉砕品からのテレフタル酸の工業的回収方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3917811B2 (enExample) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4338119B2 (ja) * | 2002-11-01 | 2009-10-07 | 月島機械株式会社 | 被処理液循環型掻取式晶析装置 |
| CA2595393C (en) * | 2004-01-27 | 2012-04-17 | Arturo Guadalupe Fregoso-Infante | Chemical process for recycling polyethylene terephthalate (pet) wastes |
| JP2006036688A (ja) * | 2004-07-27 | 2006-02-09 | Mitsui Chemicals Inc | ポリエチレンテレフタレートから回収された高純度の原料モノマー及びその製造方法 |
| JP4637551B2 (ja) * | 2004-10-13 | 2011-02-23 | アースリサイクル株式会社 | Ｐｖｃ（塩化ビニリデンも），ｐｅｔを含む混合プラスチックやアルミ複合フイルム等から有用物質の分離法 |
| JP4754237B2 (ja) * | 2005-02-23 | 2011-08-24 | パナソニック電工株式会社 | プラスチックの分解方法 |
| JP2006241380A (ja) * | 2005-03-04 | 2006-09-14 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
| JP2008133398A (ja) * | 2006-11-29 | 2008-06-12 | Toshiba Corp | Ｐｅｔを含む樹脂の熱分解油化処理装置 |
| CN108276274B (zh) * | 2018-03-07 | 2020-10-23 | 太原理工大学 | 一种利用有色涤纶织物制备对苯二甲酸的方法 |
| TWI708761B (zh) * | 2019-09-26 | 2020-11-01 | 遠東新世紀股份有限公司 | 製造對苯二甲酸的方法 |
| IT202000008935A1 (it) * | 2020-04-24 | 2021-10-24 | Garbo S R L | Processo per depolimerizzare polietilene tereftalato (pet) tramite glicolisi, e relativo impianto per la sua realizzazione. |
| JP2023163661A (ja) * | 2022-04-28 | 2023-11-10 | キリンホールディングス株式会社 | テレフタル酸の回収方法 |
| CH720900A1 (de) * | 2023-06-29 | 2025-01-15 | Depoly Sa | Kristallisationsverfahren für gereinigte Terephthalsäure |
-
2000
- 2000-11-15 JP JP2000347848A patent/JP3917811B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002155020A (ja) | 2002-05-28 |
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