JP2000127166A - Method for separating waste plastic and paper - Google Patents

Method for separating waste plastic and paper

Info

Publication number
JP2000127166A
JP2000127166A JP30652598A JP30652598A JP2000127166A JP 2000127166 A JP2000127166 A JP 2000127166A JP 30652598 A JP30652598 A JP 30652598A JP 30652598 A JP30652598 A JP 30652598A JP 2000127166 A JP2000127166 A JP 2000127166A
Authority
JP
Japan
Prior art keywords
paper
waste
plastic
waste plastic
water
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
Application number
JP30652598A
Other languages
Japanese (ja)
Inventor
Shigeki Yamazaki
茂樹 山崎
Teruo Tatefuku
輝生 立福
Toshihiko Iwasaki
敏彦 岩▲崎▼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP30652598A priority Critical patent/JP2000127166A/en
Publication of JP2000127166A publication Critical patent/JP2000127166A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/52Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

Landscapes

  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

PROBLEM TO BE SOLVED: To separate a waste plastic from a general waste from paper with a high efficiency by adding a predetermined amount of moisture to the general waste in which the paper and the waste plastic are mixed, and moisture absorbing from paper content of the waste to increase its apparent weight. SOLUTION: Water of about 30 to 50% by weight is added to a refuse obtained by mixing paper 14 comminuted to a predetermined large size by a comminutor 1 with a waste plastic 13 while passing a water adding unit 2. A mixture of the moisture absorbed paper 14 and the plastic 13 is dumped in an air table type separator 4, the paper 14 is recovered to a heavy article side and the plastic 13 is recovered to a light weight article side. The paper 14 and the plastic 13 have different moisture absorbing powers. Since only the paper 14 is changed in its apparent weight by the moisture absorption by adding the water before comminuting, they can be accurately separated. Thus, the paper 14 and the like in the general waste can be efficiently separated from the plastic 13.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、一般廃棄物中の
廃プラスチック中に含まれる紙を廃プラスチックと分離
する方法において、エアテーブルやエアジグ等の乾式比
重分離装置または風力選別機による廃プラスチックと紙
との分離を容易にし、分離効率を向上させる廃プラスチ
ックおよび紙の分離方法に関するものである。
The present invention relates to a method for separating paper contained in waste plastic in general waste from waste plastic, and to a method for separating waste plastic by a dry specific gravity separator such as an air table or an air jig or a wind separator. The present invention relates to a method for separating waste plastic and paper which facilitates separation from paper and improves separation efficiency.

【0002】[0002]

【従来の技術】プラスチックごみとして収集されるプラ
スチック系の一般廃棄物中に紙類が5〜15%混入して
おり、廃プラスチックをリサイクル利用するためには紙
を分離する必要がある。
2. Description of the Related Art Papers are mixed in 5 to 15% of general plastic waste collected as plastic waste, and paper must be separated in order to recycle waste plastics.

【0003】廃プラスチックを、例えば油化する場合
は、紙分は残渣となり、また、プラスチックから塩素含
有プラスチック{ポリ塩化ビニル(PVC)、ポリ塩化
ビニリデン(PVDC)等}のPVCを分離する場合
に、比重分離を行う場合は、紙とPVCの比重がほぼ等
しいため、紙とPVCとの混合物が残渣となる。
[0003] When waste plastics are converted to oil, for example, the paper becomes a residue, and when PVC such as chlorine-containing plastics (polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), etc.) is separated from the plastics. When the specific gravity is separated, the specific gravity of the paper and the PVC is almost equal, and thus the mixture of the paper and the PVC becomes a residue.

【0004】また、エアテーブル型またはエアジグ型の
分離装置は、形状・比重差を利用して分離を行うが、廃
プラスチックごみの破砕物そのままでは、廃プラスチッ
クと紙との分離を精度良く行うことができないという問
題がある。
An air table type or an air jig type separation device separates using a difference in shape and specific gravity. However, it is necessary to accurately separate waste plastic and paper using crushed waste plastic waste as it is. There is a problem that can not be.

【0005】[0005]

【発明が解決しようとする課題】従って、この発明の目
的は、一般廃棄物中の廃プラスチックを、その中に含ま
れる紙と高効率で分離することができる廃プラスチック
および紙の分離方法を提供することにある。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a waste plastic and a paper separation method capable of separating waste plastic in general waste from paper contained therein with high efficiency. Is to do.

【0006】[0006]

【課題を解決するための手段】請求項1記載の発明は、
紙および廃プラスチックが混在する一般廃棄物に所定量
の水分を添加し、紙の吸水性を利用して前記一般廃棄物
中の紙分を吸湿させて見かけの重量を大きくし、次い
で、前記一般廃棄物を前記紙と前記廃プラスチックとに
分離することに特徴を有するものである。
According to the first aspect of the present invention,
A predetermined amount of water is added to general waste in which paper and waste plastic are mixed, and the apparent weight is increased by absorbing the paper in the general waste by utilizing the water absorption of paper, and then increasing the apparent weight. It is characterized in that waste is separated into the paper and the waste plastic.

【0007】請求項2記載の発明は、紙および廃プラス
チックが混在する一般廃棄物を破砕後または破砕する前
に、前記一般廃棄物に所定量の水分を添加し、紙の吸水
性を利用して前記一般廃棄物中の紙分を吸湿させて見か
けの重量を大きくし、次いで、前記一般廃棄物を乾式比
重分離装置によって前記紙と前記廃プラスチックとに分
離することに特徴を有するものである。
According to a second aspect of the present invention, after crushing or before crushing general waste containing paper and waste plastic, a predetermined amount of water is added to the general waste to utilize the water absorption of the paper. The paper content in the general waste is absorbed to increase the apparent weight, and then the general waste is separated into the paper and the waste plastic by a dry specific gravity separator. .

【0008】廃プラスチックごみをあらかじめ適当な大
きさに破砕後、あるいは、何らかの方法で構成物をバラ
バラにした後、または、破砕する前に重量比率で50%
以下の水を添加し、破砕後の紙に水を吸湿させて、紙の
見かけ重量を増した後に、エアテーブル型やエアジグ型
等の乾式比重分離装置による乾式分離し、あるいは、風
量選別することによって、紙と廃プラスチックとを高効
率で分離することができる。紙とプラスチックとは吸湿
力が異なり、破砕前に水を添加することで、紙のみが吸
湿によって見かけ重量が変化するため、高精度で分離が
行われる。また、破砕時に紙と水とが混合される効果が
あり、後の混合過程を省略または短期間化することがで
きる。また、破砕後に水を添加する方法でも十分に吸湿
効果を得られる。一般廃棄物中に廃プラスチックととも
に混入し、残渣分となる紙類を分離することにより、残
渣分を減少させることができる。また、紙類を分離する
ことによって、プラスチックはその純度を向上させて、
後処理を簡単にすることができる。
After crushing waste plastic waste to an appropriate size in advance, or after crushing the components by some method, or before crushing, 50% by weight.
Add the following water to absorb the water on the crushed paper and increase the apparent weight of the paper, and then dry-separate using a dry specific gravity separator such as an air table type or an air jig type, or select the air volume. Thereby, paper and waste plastic can be separated with high efficiency. Paper and plastic have different hygroscopic powers, and by adding water before crushing, only paper changes its apparent weight due to moisture absorption, so that separation is performed with high accuracy. Further, there is an effect that the paper and water are mixed at the time of crushing, and the subsequent mixing process can be omitted or shortened. Also, a method of adding water after crushing can sufficiently obtain a moisture absorbing effect. Residual content can be reduced by mixing paper with general waste material together with waste plastic to form a residual content. Also, by separating papers, plastics improve their purity,
Post-processing can be simplified.

【0009】[0009]

【発明の実施の形態】次に、この発明の実施の形態を図
面を参照しながら説明する。 [実施の形態1]図1は、この発明の実施の形態1に係
る装置構成を示す説明図である。
Next, an embodiment of the present invention will be described with reference to the drawings. [First Embodiment] FIG. 1 is an explanatory diagram showing an apparatus configuration according to a first embodiment of the present invention.

【0010】破砕機1により20mm程度に破砕された
紙と廃プラスチックとが混合したごみは、水添加機2を
通り、その間に重量比約30%の水が添加される。添加
する水の重量比率は、50%以下とする。紙が吸湿した
廃プラスチックと紙との混合物は、公知の風力選別機3
に投入され、紙14が重量物側に回収され、廃プラスチ
ック13が軽量物側に回収される。紙と廃プラスチック
とは吸湿力が異なり、破砕前に水を添加することで、紙
のみが吸湿によって見かけ重量が変化するため、高精度
で分離が行われる。また、破砕時に紙と水とが混合され
る効果があり、後の混合過程を省略または短期間化する
ことができる。また、破砕後に水を添加する方法でも十
分吸湿は可能である。
The garbage mixed with paper and waste plastic crushed to about 20 mm by the crusher 1 passes through a water adding machine 2, during which about 30% by weight of water is added. The weight ratio of water to be added is 50% or less. The mixture of the waste plastic and the paper that has absorbed the paper is supplied to a known wind sorter 3.
And the paper 14 is collected on the heavy object side, and the waste plastic 13 is collected on the light object side. Paper and waste plastic have different hygroscopic powers, and by adding water before crushing, the apparent weight of only paper changes due to moisture absorption, so that separation is performed with high precision. Further, there is an effect that the paper and water are mixed at the time of crushing, and the subsequent mixing process can be omitted or shortened. Also, moisture can be sufficiently absorbed by a method of adding water after crushing.

【0011】[実施の形態2]図2は、この発明の実施
の形態2に係る装置構成を示す説明図である。破砕機1
により20mm程度に破砕された紙と廃プラスチックと
が混合したごみは、水添加機2を通り、その間に重量比
約30%の水が添加される。紙が吸湿した廃プラスチッ
クと紙との混合物は、公知のエアテーブル型分離装置4
に投入され、紙14が重量物側に回収され、廃プラスチ
ック13が軽量物側に回収される。
[Embodiment 2] FIG. 2 is an explanatory diagram showing a device configuration according to Embodiment 2 of the present invention. Crusher 1
The waste mixed with paper and waste plastic crushed to about 20 mm by the above process passes through the water adding machine 2, during which water having a weight ratio of about 30% is added. The mixture of the waste plastic and the paper that has absorbed the paper is mixed with a known air table type separation device 4.
And the paper 14 is collected on the heavy object side, and the waste plastic 13 is collected on the light object side.

【0012】エアテーブル型分離装置4は、図4に示す
ように、底板(振動篩)6と、底板6の両脇に設けられ
た2枚の側面板7と、底板6上において側面板7、7間
にわたり互いに平行に設けられた複数の邪魔板(リッフ
ル)8とを備えている。底板6は、図4に示すように、
傾斜角1(符号9)のサイドスロープおよび傾斜角2
(符号10)のエンドスロープを有し傾斜している。底
板6は、振動方向11に振動するようになっている。ま
た、底板6は下面の噴射孔から上方に向けて上昇空気流
11を噴射するようになっている。底板6が振動方向1
2に振動することにより、底板6上の紙と廃プラスチッ
クは比重差により、廃プラスチック13は軽比重物排出
側15から、そして、紙14は重比重物排出側16か
ら、分離回収される。
As shown in FIG. 4, the air table type separation device 4 includes a bottom plate (vibrating sieve) 6, two side plates 7 provided on both sides of the bottom plate 6, and a side plate 7 on the bottom plate 6. , 7 and a plurality of baffle plates (riffles) 8 provided in parallel with each other. The bottom plate 6 is, as shown in FIG.
Side slope with slope 1 (reference number 9) and slope 2
It has an end slope (reference numeral 10) and is inclined. The bottom plate 6 vibrates in the vibration direction 11. In addition, the bottom plate 6 injects the upward airflow 11 upward from the injection holes on the lower surface. Bottom plate 6 is vibration direction 1
By vibrating to 2, the paper on the bottom plate 6 and the waste plastic are separated and collected by the difference in specific gravity, so that the waste plastic 13 is separated from the light specific substance discharge side 15 and the paper 14 is separated and collected from the heavy specific substance discharge side 16.

【0013】[実施の形態3]図3は、この発明の実施
の形態3に係る装置構成を示す説明図である。破砕機1
により20mm程度に破砕された紙と廃プラスチックと
が混合したごみは、水添加機2を通り、その間に重量比
約30%の水が添加される。紙が吸湿した廃プラスチッ
クと紙との混合物は、公知のエアジグ型分離装置5に投
入され、紙14が重量物側に回収され、廃プラスチック
13が軽量物側に回収される。
[Third Embodiment] FIG. 3 is an explanatory diagram showing an apparatus configuration according to a third embodiment of the present invention. Crusher 1
The waste mixed with paper and waste plastic crushed to about 20 mm by the above process passes through the water adding machine 2, during which water having a weight ratio of about 30% is added. The mixture of the waste plastic and the paper that has absorbed the paper is put into a known air jig-type separation device 5, where the paper 14 is collected on the heavy material side, and the waste plastic 13 is collected on the lightweight material side.

【0014】エアジグ型分離装置は、下面に分離板(図
示せず)を有する塔の下面から分離板を通して空気を上
方に向けて流入し、空気を塔内のごみ(紙と廃プラスチ
ック)に供給して流動層を構成することにより、紙と廃
プラスチックとを比重差によって分離する装置である。
[0014] The air jig type separation apparatus is configured such that air flows upward from a lower surface of a tower having a separating plate (not shown) through a separating plate, and supplies air to refuse (paper and waste plastic) in the tower. This is an apparatus that separates paper and waste plastic by a specific gravity difference by forming a fluidized bed.

【0015】この発明の分離方法によれば、従来では分
離が困難であったプラスチック類に混入してくる紙を分
離することができる。紙の見かけ比重が大きくなること
により、紙とプラスチックとの見かけ重量に差ができる
ため、その後のエアテーブル等の乾式分離が可能とな
る。分離した紙は、例えば古紙の原料として再利用する
ことができる。
According to the separation method of the present invention, it is possible to separate paper mixed in plastics, which was conventionally difficult to separate. As the apparent specific gravity of the paper increases, the apparent weight of the paper and the plastic becomes different, so that the subsequent dry separation of an air table or the like becomes possible. The separated paper can be reused, for example, as a raw material for waste paper.

【0016】[0016]

【発明の効果】以上説明したように、この発明によれ
ば、下記に示す有用な効果がもたらされる。 (1)一般廃棄物中の紙類と廃プラスチックとを高効率
で分離することができる。 (2)埋め立て処分される廃棄物の量を減らすことがで
きる。
As described above, according to the present invention, the following useful effects can be obtained. (1) Paper and waste plastic in general waste can be separated with high efficiency. (2) The amount of waste landfilled can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の実施の形態に係る装置構成を示す説
明図である。
FIG. 1 is an explanatory diagram showing a device configuration according to an embodiment of the present invention.

【図2】この発明の実施の形態2に係る装置構成を示す
説明図である。
FIG. 2 is an explanatory diagram showing an apparatus configuration according to Embodiment 2 of the present invention.

【図3】この発明の実施の形態3に係る装置構成を示す
説明図である。
FIG. 3 is an explanatory diagram showing a device configuration according to a third embodiment of the present invention.

【図4】この発明の実施の形態2に係るエアテーブル型
分離装置の一例を示す斜視図である。
FIG. 4 is a perspective view showing an example of an air table type separation device according to Embodiment 2 of the present invention.

【符号の説明】[Explanation of symbols]

1 破砕機 2 水添加機 3 風力選別機 4 エアテーブル型分離装置 5 エアジグ型分離装置 6 底板(振動篩) 7 側面板 8 邪魔板 9 傾斜角1 10 傾斜角2 11 上昇空気流 12 振動方向 13 廃プラスチック 14 紙 15 軽比重物排出側 16 重比重物排出側 DESCRIPTION OF SYMBOLS 1 Crusher 2 Water addition machine 3 Wind separator 4 Air table type separation device 5 Airgage type separation device 6 Bottom plate (vibrating sieve) 7 Side plate 8 Baffle plate 9 Incline angle 1 10 Incline angle 2 11 Ascending air flow 12 Oscillation direction 13 Waste plastic 14 Paper 15 Light specific gravity discharge side 16 Heavy specific gravity discharge side

───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩▲崎▼ 敏彦 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 Fターム(参考) 4F301 AA17 BA21 BF02 BF09 BF11 BF25  ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Iwa ▲ saki ▼ Toshihiko 1-2-1 Marunouchi, Chiyoda-ku, Tokyo F-term (reference) 4F301 AA17 BA21 BF02 BF09 BF11 BF25

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 紙および廃プラスチックが混在する一般
廃棄物に所定量の水分を添加し、紙の吸水性を利用して
前記一般廃棄物中の紙分を吸湿させて見かけの重量を大
きくし、次いで、前記一般廃棄物を前記紙と前記廃プラ
スチックとに分離することを特徴とする廃プラスチック
および紙の分離方法。
1. A method according to claim 1, wherein a predetermined amount of water is added to the general waste containing paper and waste plastic, and the apparent weight of the general waste is increased by utilizing the water absorption of the paper to absorb the paper in said general waste. And separating the general waste into the paper and the waste plastic.
【請求項2】 紙および廃プラスチックが混在する一般
廃棄物を破砕後または破砕する前に、前記一般廃棄物に
所定量の水分を添加し、紙の吸水性を利用して前記一般
廃棄物中の紙分を吸湿させて見かけの重量を大きくし、
次いで、前記一般廃棄物を乾式比重分離装置によって前
記紙と前記廃プラスチックとに分離することを特徴とす
る廃プラスチックおよび紙の分離方法。
2. After or before crushing municipal waste containing paper and waste plastic, a predetermined amount of water is added to the municipal waste, and the municipal waste is absorbed in the municipal waste by utilizing the water absorption of the paper. To absorb the paper and increase the apparent weight,
Next, the waste material is separated into the paper and the waste plastic by a dry specific gravity separator.
JP30652598A 1998-10-28 1998-10-28 Method for separating waste plastic and paper Pending JP2000127166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30652598A JP2000127166A (en) 1998-10-28 1998-10-28 Method for separating waste plastic and paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30652598A JP2000127166A (en) 1998-10-28 1998-10-28 Method for separating waste plastic and paper

Publications (1)

Publication Number Publication Date
JP2000127166A true JP2000127166A (en) 2000-05-09

Family

ID=17958084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30652598A Pending JP2000127166A (en) 1998-10-28 1998-10-28 Method for separating waste plastic and paper

Country Status (1)

Country Link
JP (1) JP2000127166A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021104493A (en) * 2019-12-27 2021-07-26 株式会社クボタ Screening method of materials suitable for fermentation and screening system of materials suitable for fermentation
CN115228900A (en) * 2022-07-25 2022-10-25 苏州嘉诺智能装备有限公司 Paper-plastic separation system and paper-plastic separation method for waste paper treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021104493A (en) * 2019-12-27 2021-07-26 株式会社クボタ Screening method of materials suitable for fermentation and screening system of materials suitable for fermentation
JP7386699B2 (en) 2019-12-27 2023-11-27 株式会社クボタ Fermentation suitable material selection method and fermentation suitable material selection system
CN115228900A (en) * 2022-07-25 2022-10-25 苏州嘉诺智能装备有限公司 Paper-plastic separation system and paper-plastic separation method for waste paper treatment

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