JP2000044723A - Separation of polyvinyl chloride resin from plastic mixture - Google Patents
Separation of polyvinyl chloride resin from plastic mixtureInfo
- Publication number
- JP2000044723A JP2000044723A JP21125098A JP21125098A JP2000044723A JP 2000044723 A JP2000044723 A JP 2000044723A JP 21125098 A JP21125098 A JP 21125098A JP 21125098 A JP21125098 A JP 21125098A JP 2000044723 A JP2000044723 A JP 2000044723A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl chloride
- chloride resin
- dmso
- plastic mixture
- separation
- 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.)
- Withdrawn
Links
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 30
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 30
- 239000011347 resin Substances 0.000 title claims abstract description 30
- 229920005989 resin Polymers 0.000 title claims abstract description 30
- 229920003023 plastic Polymers 0.000 title claims abstract description 17
- 239000004033 plastic Substances 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 title claims abstract description 12
- 238000000926 separation method Methods 0.000 title abstract description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 9
- 239000002904 solvent Substances 0.000 abstract description 8
- 238000004090 dissolution Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000004821 distillation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 10
- 150000002013 dioxins Chemical class 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 230000005183 environmental health Effects 0.000 description 4
- 239000008096 xylene Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- Processing Of Solid Wastes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プラスチック混合
物からポリ塩化ビニル樹脂を選択的に分離する技術に関
するものである。TECHNICAL FIELD The present invention relates to a technique for selectively separating a polyvinyl chloride resin from a plastic mixture.
【０００２】[0002]
【従来の技術】近年、世界的に環境ホルモンに対する関
心が高まり、その中でもダイオキシン類の人体への影響
がクローズアップされている。このダイオキシン類の発
生原因物質の一つと考えられているのがポリ塩化ビニル
樹脂である。ポリ塩化ビニル樹脂は耐久性に優れ、添加
する可塑剤の量によって硬質から軟質まで様々な用途に
加工でき、製品寿命が長く、低価格であることから、幅
広い用途に利用されている。しかしながら、廃棄物とし
て焼却処分すると塩化水素を発生し、これが焼却過程内
で触媒の存在下にダイオキシン類の生成に関与すると言
われている。その対策としては、ダイオキシン類生成抑
制技術や生成したダイオキシン類の捕集および分解技術
等が検討されているが、これらは一旦発生したダイオキ
シンをいかに除去するかについての技術である。2. Description of the Related Art In recent years, interest in environmental hormones has increased worldwide, and among them, the effects of dioxins on the human body have been highlighted. Polyvinyl chloride resin is considered to be one of the substances causing the generation of dioxins. Polyvinyl chloride resin has excellent durability, can be processed for various uses from hard to soft depending on the amount of plasticizer to be added, and has a long product life and low price, and is therefore used for a wide range of applications. However, incineration as waste generates hydrogen chloride, which is said to be involved in the production of dioxins in the presence of a catalyst during the incineration process. As a countermeasure, technologies for suppressing the generation of dioxins and technologies for collecting and decomposing the generated dioxins have been studied, but these are technologies for removing once generated dioxins.
【０００３】これに対し、混合プラスチック廃棄物から
ポリ塩化ビニル樹脂のみを分離することができれば、こ
れを個別に処理してポリ塩化ビニル樹脂からのダイオキ
シンの発生を未然に防ぐことができる。その分離方法の
一つとして溶剤によりポリ塩化ビニル樹脂を溶解させる
方法がある。On the other hand, if only the polyvinyl chloride resin can be separated from the mixed plastic waste, it can be individually treated to prevent the generation of dioxin from the polyvinyl chloride resin. As one of the separation methods, there is a method of dissolving a polyvinyl chloride resin with a solvent.
【０００４】既知の溶剤としては、テトラヒドロフラン
（ＴＨＦと略記する）とキシレンがあり、これらの溶剤
を用いて、溶剤の温度を変えることにより各種プラスチ
ックを分離している。[0004] Known solvents include tetrahydrofuran (abbreviated as THF) and xylene, and these plastics are used to separate various plastics by changing the temperature of the solvent.
【０００５】しかしながら、これらの溶剤はいずれも何
らかの法規制が掛けられている化合物であり、環境衛生
上好ましくない。[0005] However, all of these solvents are compounds subject to some legal regulations, and are not preferable in terms of environmental health.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、環境衛生上
問題のない溶剤を用いて、プラスチック混合物からポリ
塩化ビニル樹脂を選択的に分離する方法を提供すること
を目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for selectively separating a polyvinyl chloride resin from a plastic mixture using a solvent having no environmental health problems.
【０００７】[0007]
【課題を解決するための手段】本発明による、プラスチ
ック混合物からのポリ塩化ビニル樹脂の分離方法は、プ
ラスチック混合物から有機溶剤によりポリ塩化ビニル樹
脂を溶解し分離するに当たり、上記有機溶剤としてジメ
チルスルホキシド（ＤＭＳＯと略記する）を用いること
を特徴とする方法である。According to the method of separating a polyvinyl chloride resin from a plastic mixture according to the present invention, dimethyl sulfoxide (dimethyl sulfoxide) is used as the organic solvent when the polyvinyl chloride resin is dissolved and separated from the plastic mixture with an organic solvent. DMSO).
【０００８】ＤＭＳＯによるポリ塩化ビニル樹脂の溶解
温度範囲は好ましくは６５℃〜９０℃、より好ましくは
７５℃〜９０℃である。The temperature range for dissolving the polyvinyl chloride resin in DMSO is preferably 65 ° C to 90 ° C, more preferably 75 ° C to 90 ° C.
【０００９】ＤＭＳＯに溶解したポリ塩化ビニル樹脂を
再利用するには、この溶液に水、メタノールなどを加え
ることによって、ポリ塩化ビニル樹脂を容易に析出さ
せ、ＤＭＳＯから取り出す。残ったＤＭＳＯは蒸留など
によって精製し、再使用に供する。また、ポリ塩化ビニ
ル樹脂除去後に残ったプラスチック混合物は、油化など
のサーマルリサイクルに供される。To reuse the polyvinyl chloride resin dissolved in DMSO, the polyvinyl chloride resin is easily precipitated by adding water, methanol or the like to the solution and taken out from DMSO. The remaining DMSO is purified by distillation or the like, and is reused. The plastic mixture remaining after removing the polyvinyl chloride resin is subjected to thermal recycling such as oiling.
【００１０】[0010]
【発明の実施の形態】ポリ塩化ビニル、ポリスチレン、
ポリエチレン、ポリプロピレンおよびポリエチレンテレ
フタレートをそれぞれ約０．５ｇ取り、５０ｍｌのビー
カーに別々に入れ、これにＤＭＳＯ約２０ｍｌを加えて
攪拌した。ＤＭＳＯの温度をホットプレートを使用して
６５℃〜９０℃の範囲で変動させ、各温度でのプラスチ
ックの溶解の有無を調べた。溶解の有無はプラスチック
含有液にメタノールを加えて溶液が白濁するかどうかで
確認した。DETAILED DESCRIPTION OF THE INVENTION Polyvinyl chloride, polystyrene,
About 0.5 g of each of polyethylene, polypropylene and polyethylene terephthalate was separately placed in a 50 ml beaker, and about 20 ml of DMSO was added thereto and stirred. The temperature of DMSO was varied in the range of 65 ° C. to 90 ° C. using a hot plate, and the presence or absence of plastic dissolution at each temperature was examined. The presence or absence of dissolution was confirmed by adding methanol to the plastic-containing liquid and checking whether the solution became cloudy.
【００１１】この溶解試験結果を表１に示す。表１から
判るように、ポリ塩化ビニル樹脂のみが６５℃〜９０℃
の範囲でＤＭＳＯに溶解し、ポリ塩化ビニル樹脂の熱劣
化による着色もなかった。このように、ポリ塩化ビニル
樹脂のみがＤＭＳＯに溶解することができることを利用
して、プラスチックからポリ塩化ビニル樹脂を分離する
ことができる。溶剤であるＤＭＳＯとＴＨＦ、キシレン
との性状比較を表２に示す。ＤＭＳＯはＴＨＦ、キシレ
ンと比較して毒性、引火点等の点で優れており、環境衛
生上好ましい溶剤である。The results of the dissolution test are shown in Table 1. As can be seen from Table 1, only the polyvinyl chloride resin is 65 ° C to 90 ° C.
And dissolved in DMSO, and there was no coloring due to thermal degradation of the polyvinyl chloride resin. As described above, by utilizing the fact that only the polyvinyl chloride resin can be dissolved in DMSO, the polyvinyl chloride resin can be separated from the plastic. Table 2 shows a property comparison between DMSO, a solvent, and THF and xylene. DMSO is superior in terms of toxicity, flash point and the like as compared with THF and xylene, and is a preferable solvent for environmental health.
【００１２】なお、使用した樹脂は表３に示す通りであ
る。The resins used are as shown in Table 3.
【００１３】[0013]
【表１】 [Table 1]
【表２】 [Table 2]
【表３】 [Table 3]
【００１４】[0014]
【発明の効果】本発明による分離方法で有機溶剤として
用いるＤＭＳＯは、ＴＨＦやキシレンと比較して毒性が
小さく、引火点が高いため環境衛生上好ましい。As described above, DMSO used as an organic solvent in the separation method of the present invention is less toxic and has a higher flash point than THF and xylene, and is therefore preferable from the viewpoint of environmental health.
【００１５】また、ＤＭＳＯによるポリ塩化ビニル樹脂
の溶解温度範囲を６５〜９０℃の範囲に設定することに
よって、プラスチック混合物からポリ塩化ビニル樹脂の
みを分離することができる。Further, by setting the temperature of dissolving the polyvinyl chloride resin in DMSO to a range of 65 to 90 ° C., only the polyvinyl chloride resin can be separated from the plastic mixture.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐々木 邦夫 大阪市住之江区南港北１丁目７番89号 日 立造船株式会社内 Ｆターム(参考） 4F074 AA35L EA07 EA12 EA43 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Kunio Sasaki, Inventor 1-7-89, Minami Kohoku, Suminoe-ku, Osaka F-term in Tachibashi Shipbuilding Co., Ltd. 4F074 AA35L EA07 EA12 EA43
Claims (2)
ポリ塩化ビニル樹脂を溶解し分離するに当たり、上記有
機溶剤としてジメチルスルホキシドを用いることを特徴
とするプラスチック混合物からのポリ塩化ビニル樹脂の
分離方法。1. A method for separating a polyvinyl chloride resin from a plastic mixture, wherein dimethyl sulfoxide is used as the organic solvent in dissolving and separating the polyvinyl chloride resin from the plastic mixture with an organic solvent.
化ビニル樹脂の溶解温度範囲が６５℃〜９０℃である請
求項２記載の分離方法。2. The method according to claim 2, wherein the temperature of dissolving the polyvinyl chloride resin in the dimethyl sulfoxide is 65 ° C. to 90 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21125098A JP2000044723A (en) | 1998-07-27 | 1998-07-27 | Separation of polyvinyl chloride resin from plastic mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21125098A JP2000044723A (en) | 1998-07-27 | 1998-07-27 | Separation of polyvinyl chloride resin from plastic mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000044723A true JP2000044723A (en) | 2000-02-15 |
Family
ID=16602802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21125098A Withdrawn JP2000044723A (en) | 1998-07-27 | 1998-07-27 | Separation of polyvinyl chloride resin from plastic mixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000044723A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7063213B2 (en) | 2002-07-22 | 2006-06-20 | Mba Polymers, Inc. | Mediating electrostatic separation |
| CN102699011A (en) * | 2012-06-21 | 2012-10-03 | 上海大学 | Method for treating waste circuit board by using dimethyl sulfoxide |
| CN109365487A (en) * | 2018-11-30 | 2019-02-22 | 清远市进田企业有限公司 | The energy-efficient cleaning process of epoxy coating in a kind of waste and old circuit board |
| WO2023033601A1 (en) * | 2021-09-03 | 2023-03-09 | 주식회사 엘지화학 | Method for screening solvent for polyvinyl chloride extraction, recycling method for waste material, and recycled polyvinyl chloride and composition |
| WO2023033605A1 (en) * | 2021-09-03 | 2023-03-09 | 주식회사 엘지화학 | Method for screening solvent for extracting polyvinyl chloride, method for recycling waste, recycled polyvinyl chloride, and composition |
| KR20240044313A (en) | 2022-09-28 | 2024-04-04 | 주식회사 엘지화학 | Method for recovering recovered polymers |
| WO2024071618A1 (en) | 2022-09-28 | 2024-04-04 | 주식회사 엘지화학 | Method for preparing recycled polymers |
| KR20240059415A (en) | 2022-10-27 | 2024-05-07 | 주식회사 엘지화학 | Method for preparing recovered polymers |
-
1998
- 1998-07-27 JP JP21125098A patent/JP2000044723A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7063213B2 (en) | 2002-07-22 | 2006-06-20 | Mba Polymers, Inc. | Mediating electrostatic separation |
| CN102699011A (en) * | 2012-06-21 | 2012-10-03 | 上海大学 | Method for treating waste circuit board by using dimethyl sulfoxide |
| CN109365487A (en) * | 2018-11-30 | 2019-02-22 | 清远市进田企业有限公司 | The energy-efficient cleaning process of epoxy coating in a kind of waste and old circuit board |
| WO2023033601A1 (en) * | 2021-09-03 | 2023-03-09 | 주식회사 엘지화학 | Method for screening solvent for polyvinyl chloride extraction, recycling method for waste material, and recycled polyvinyl chloride and composition |
| WO2023033605A1 (en) * | 2021-09-03 | 2023-03-09 | 주식회사 엘지화학 | Method for screening solvent for extracting polyvinyl chloride, method for recycling waste, recycled polyvinyl chloride, and composition |
| KR20240044313A (en) | 2022-09-28 | 2024-04-04 | 주식회사 엘지화학 | Method for recovering recovered polymers |
| WO2024071618A1 (en) | 2022-09-28 | 2024-04-04 | 주식회사 엘지화학 | Method for preparing recycled polymers |
| KR20240059415A (en) | 2022-10-27 | 2024-05-07 | 주식회사 엘지화학 | Method for preparing recovered polymers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20051004 |