JP2000204376A - Thermal decomposition apparatus for mixed plastic waste - Google Patents
Thermal decomposition apparatus for mixed plastic wasteInfo
- Publication number
- JP2000204376A JP2000204376A JP668899A JP668899A JP2000204376A JP 2000204376 A JP2000204376 A JP 2000204376A JP 668899 A JP668899 A JP 668899A JP 668899 A JP668899 A JP 668899A JP 2000204376 A JP2000204376 A JP 2000204376A
- Authority
- JP
- Japan
- Prior art keywords
- type reactor
- pet
- stirring
- tank
- mixed waste
- 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.)
- Granted
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
- C08J11/14—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 steam or water
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＰＥＴを含む混合
廃プラスチックを原料として燃料油を回収するケミカル
リサイクルの分野で用いられる混合廃プラスチックの熱
分解装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixed waste plastic pyrolysis apparatus used in the field of chemical recycling for recovering fuel oil from mixed waste plastic containing PET as a raw material.
【０００２】[0002]
【従来の技術】ＰＥ（ポリエチレン）等の一般廃プラス
チックを熱分解して燃料油を回収する試みは従来からな
されているが、近年におけるＰＥＴボトルの普及に伴
い、市場から回収される廃プラスチック中には多量のＰ
ＥＴ（ポリエチレンテレフタレート）が含まれている場
合が多い。ところがＰＥＴを含む混合廃プラスチックを
熱分解すると、ＰＥＴ樹脂由来の昇華性物質による配管
閉塞などの問題が生ずるため、長期的に連続運転可能な
ケミカルリサイクルプロセスは未だ確立されていない。
そこで本発明者等は、これらの昇華性物質を水蒸気と接
触させながら熱分解する工程と、熱分解油を軽質燃料油
へ変換する接触分解工程とを組み合わせた２段階プロセ
スを先に開発した。2. Description of the Related Art Conventionally, attempts have been made to recover fuel oil by thermally decomposing general waste plastics such as PE (polyethylene). However, with the spread of PET bottles in recent years, waste plastics recovered from the market have become increasingly popular. Has a large amount of P
ET (polyethylene terephthalate) is often included. However, when pyrolysis of mixed waste plastic containing PET causes problems such as blockage of pipes due to a sublimable substance derived from PET resin, a chemical recycling process that can be operated continuously for a long time has not yet been established.
Therefore, the present inventors have previously developed a two-stage process combining a step of thermally decomposing these sublimable substances with water vapor and a catalytic cracking step of converting pyrolyzed oil into light fuel oil.
【０００３】この熱分解工程では、水蒸気との接触効率
を高めるために、図３に示したような攪拌型反応器１を
熱分解装置として用いた。この攪拌型反応器１は、直径
が１０〜５０ｍｍ程度のボール状の充填物２が充填され
た充填槽３の内部にらせん状の攪拌翼４を設けたもの
で、上端から混合廃プラスチックと過熱水蒸気とを供給
し、４００〜５００℃の温度で充填物２とともに攪拌し
ながら、徐々に溶融・予備分解・加水分解等を行わせる
ものである。そして熱分解ガスは下部の熱分解ガス取り
出し口５から取り出され、後段の接触分解工程へ送られ
る。In this pyrolysis step, a stirring type reactor 1 as shown in FIG. 3 was used as a pyrolysis apparatus in order to increase the contact efficiency with steam. This stirring type reactor 1 is provided with a spiral stirring blade 4 inside a filling tank 3 filled with a ball-like packing 2 having a diameter of about 10 to 50 mm. While supplying steam and stirring with the filler 2 at a temperature of 400 to 500 ° C., melting, preliminary decomposition, hydrolysis, and the like are gradually performed. Then, the pyrolysis gas is taken out from the lower pyrolysis gas outlet 5 and sent to the subsequent catalytic cracking step.
【０００４】ところが上記の反応条件においては、混合
廃プラスチック中のＰＥＴは５〜１０分程度で熱分解が
完了するものの、ＰＥは３０〜６０分程度の熱分解時間
を要する。このため、ＰＥＴに合わせて攪拌型反応器１
を設計するとＰＥは分解不十分な液状のまま排出される
こととなる。一方、ＰＥに合わせて攪拌型反応器１を設
計すると攪拌型反応器１の高さＨを非常に長尺化しなけ
ればならないという実設備設計上の問題があった。However, under the above reaction conditions, thermal decomposition of PET in the mixed waste plastic is completed in about 5 to 10 minutes, but PE requires a thermal decomposition time of about 30 to 60 minutes. For this reason, the stirring type reactor 1
Is designed, PE is discharged in a state of insufficiently decomposed liquid. On the other hand, when the stirring type reactor 1 is designed in accordance with PE, there is a problem in actual equipment design that the height H of the stirring type reactor 1 must be made very long.
【０００５】またこれとは別に、図４に示したようなタ
ンク型反応器６も検討された。これは炉体７の内部に混
合廃プラスチックと水蒸気とを供給し、攪拌翼８により
溶融プラスチックを攪拌しつつ加熱し、熱分解する装置
である。しかしこのタンク型反応器６は、混合廃プラス
チックと水蒸気との接触面積が小さいため、長時間にわ
たり溶融プラスチックを加熱していると、図示のように
炉体７の底部にＰＥＴ由来の成分が炭化物９となって付
着してくるため、メンテナンスに手数を要するという実
設備設計上の問題があった。[0005] Apart from this, a tank type reactor 6 as shown in FIG. 4 was also studied. This is a device that supplies mixed waste plastic and steam to the inside of the furnace body 7, heats the molten plastic while stirring it with the stirring blade 8, and thermally decomposes it. However, since the tank-type reactor 6 has a small contact area between the mixed waste plastic and water vapor, if the molten plastic is heated for a long time, the PET-derived component is formed on the bottom of the furnace body 7 as shown in FIG. There is a problem in actual equipment design that maintenance is troublesome because it becomes 9 and adheres.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、ＰＥＴを含む混合廃プラスチックを
効率よく熱分解することができる、小型で取り扱いの簡
単な熱分解装置を提供するためになされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a small-sized and easy-to-handle pyrolysis apparatus capable of efficiently pyrolyzing mixed waste plastic containing PET. It was done for.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、ＰＥＴを含む混合廃プラスチッ
クの熱分解装置であって、攪拌翼により充填物とともに
混合廃プラスチックを攪拌しながら水蒸気と接触させる
攪拌型反応器の下方に、滴下した溶融プラスチックを熱
分解するタンク型反応器を設置したことを特徴とするも
のである。攪拌型反応器とタンク型反応器との間に、熱
分解ガス取り出し口が設けられる。SUMMARY OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, is an apparatus for thermally decomposing mixed waste plastic containing PET, wherein the mixed waste plastic is stirred together with the filler by a stirring blade. A tank type reactor for thermally decomposing dropped molten plastic is provided below a stirring type reactor that is brought into contact with steam. A pyrolysis gas outlet is provided between the stirring type reactor and the tank type reactor.
【０００８】本発明によれば、攪拌型反応器において混
合廃プラスチックを充填物とともに攪拌し、水蒸気と接
触させる。この構造により水蒸気との接触効率を高くで
き、混合廃プラスチック中のＰＥ等の一般プラスチック
の溶融・予備分解と、ＰＥＴの加水分解を行う。ＰＥＴ
の加水分解により得られた熱分解ガスは攪拌型反応器の
下方の熱分解ガス取り出し口から取り出される。またＰ
Ｅ等の一般プラスチックは、分解不十分なまま溶融プラ
スチックとなって下方のタンク型反応器に滴下し、熱分
解されて熱分解ガス取り出し口から取り出される。According to the present invention, the mixed waste plastic is stirred together with the filler in a stirred reactor, and brought into contact with steam. With this structure, the contact efficiency with water vapor can be increased, and the melting and preliminary decomposition of general plastics such as PE in the mixed waste plastics and hydrolysis of PET are performed. PET
Is obtained from the pyrolysis gas outlet below the stirred reactor. Also P
General plastics such as E become molten plastics with insufficient decomposition, drop into the lower tank reactor, are thermally decomposed, and are taken out from the pyrolysis gas outlet.
【０００９】このため、攪拌型反応器はＰＥＴの加水分
解に適した高さとすればよく、装置を大型化させる必要
はない。またＰＥＴ由来の成分はタンク型反応器には入
らないため、タンク型反応器はＰＥ等の一般プラスチッ
クの熱分解のみを考慮して設計すればよく、この部分も
小型化することができるうえ、ＰＥＴ由来の成分による
炭化物の付着がないために、メンテナンスも容易であ
る。[0009] Therefore, the height of the stirring type reactor is suitable for hydrolysis of PET, and there is no need to increase the size of the apparatus. In addition, since components derived from PET do not enter the tank-type reactor, the tank-type reactor may be designed only in consideration of the thermal decomposition of general plastics such as PE, and this part can be downsized. Maintenance is also easy because there is no carbide attached by the components derived from PET.
【００１０】[0010]
【発明の実施の形態】以下に本発明の好ましい実施形態
を示す。図１において、破線で囲んだ１０は外部加熱装
置であり、その内部に４００〜５００℃に加熱された攪
拌型反応器１１とタンク型反応器１２とが設置されてい
る。攪拌型反応器１１には直径が１０〜５０ｍｍ程度の
ガラスビーズやアルミナ、ＳｉＣ等のボール状の充填物
１３が充填され、その内部に攪拌翼１４、１５を設けた
ものである。この実施形態では上部の攪拌翼１４をプロ
ペラ翼、下部の攪拌翼１５をアンカー翼としたが、全部
を図３に示すようならせん状の羽根としてもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. In FIG. 1, reference numeral 10 surrounded by a broken line denotes an external heating device, in which a stirring type reactor 11 and a tank type reactor 12 heated to 400 to 500 ° C. are installed. The stirring type reactor 11 is filled with glass beads having a diameter of about 10 to 50 mm, a ball-like filler 13 such as alumina or SiC, and stirring blades 14 and 15 are provided therein. In this embodiment, the upper stirring blade 14 is a propeller blade and the lower stirring blade 15 is an anchor blade. However, the whole may be a spiral blade as shown in FIG.
【００１１】この攪拌型反応器１１の上端から、ＰＥＴ
を含む混合廃プラスチックが供給される。市場から回収
される廃プラスチック中には、質量比で５〜１０％程度
のＰＥＴが含まれているのが普通である。また攪拌型反
応器１１の上端からは、過熱水蒸気が供給される。過熱
水蒸気は図示のように、外部のスチーム発生部１６によ
り発生させた水蒸気を外部加熱装置１０内のスチーム予
熱部１７で加熱することにより供給される。攪拌型反応
器１１の高さは、ＰＥＴの加水分解に適した高さに設定
される。なお充填物１３を攪拌しない場合には、充填物
１３の上部に溶融プラスチックが堆積したが、充填物１
３を攪拌翼１４、１５により攪拌することにより溶融プ
ラスチックが均一に分散され、効率よく伝熱することが
でき処理量を増大させることができる。From the upper end of the stirring type reactor 11, PET
Is supplied. Waste plastics recovered from the market usually contain about 5 to 10% by weight of PET. Superheated steam is supplied from the upper end of the stirred reactor 11. As shown in the figure, the superheated steam is supplied by heating steam generated by an external steam generating unit 16 in a steam preheating unit 17 in the external heating device 10. The height of the stirring type reactor 11 is set to a height suitable for hydrolysis of PET. When the filler 13 was not stirred, the molten plastic was deposited on the upper part of the filler 13.
By stirring 3 with stirring blades 14 and 15, the molten plastic is uniformly dispersed, heat can be efficiently transferred, and the throughput can be increased.
【００１２】タンク型反応器１２はこの攪拌型反応器１
１の下方に設置されている。混合廃プラスチック中のＰ
ＥＴは攪拌型反応器１１を通過する間に加水分解され、
攪拌型反応器１１とタンク型反応器１２との間の熱分解
ガス取り出し口１８から取り出される。しかし混合廃プ
ラスチック中のＰＥ等の一般プラスチックは、攪拌型反
応器１１内で溶融及び予備分解されるのみで、分解不十
分なまま溶融プラスチックとなって下方のタンク型反応
器１２に滴下する。The tank-type reactor 12 is provided with the stirring-type reactor 1
1 below. P in mixed waste plastic
ET is hydrolyzed while passing through the stirred reactor 11,
It is taken out from a pyrolysis gas outlet 18 between the stirring type reactor 11 and the tank type reactor 12. However, general plastics such as PE in the mixed waste plastics are only melted and pre-decomposed in the stirred type reactor 11, and become insufficiently decomposed into molten plastic to be dropped into the lower tank type reactor 12.
【００１３】この溶融プラスチックはタンク型反応器１
２の内部で加熱されることにより熱分解され、熱分解ガ
スとなって熱分解ガス取り出し口１８から取り出され
る。このタンク型反応器１２の内部にはＰＥＴ由来の成
分は入らず、しかもＰＥ等も攪拌型反応器１１内で溶融
及び予備分解された状態でタンク型反応器１２の内部に
入るため、小型化することができる。このため溶融プラ
スチックの滞留時間は短くて済むうえ、ＰＥＴ由来の成
分が入らないために、図４に示したような炭化物の付着
がなく、メンテナンスも容易である。The molten plastic is supplied to a tank type reactor 1
The heat is decomposed by being heated inside 2, and it is taken out from the pyrolysis gas outlet 18 as a pyrolysis gas. No components derived from PET enter the inside of the tank type reactor 12, and PE and the like enter the inside of the tank type reactor 12 in a state of being melted and pre-decomposed in the stirred type reactor 11. can do. For this reason, the residence time of the molten plastic can be short, and since the components derived from PET do not enter, there is no adhesion of carbide as shown in FIG. 4 and maintenance is easy.
【００１４】なお、熱分解ガス取り出し口１８から取り
出された熱分解ガスは、接触分解反応器１９に導かれて
接触分解される。この接触分解反応器１９では鉄系触媒
を用いて配管閉塞の原因となる昇華性物質を分解し、得
られた重質成分をさらにゼオライト系（Ｎｉ／ＲＥＹ）
触媒により軽質燃料油に接触分解する。接触分解生成物
は生成物回収部２０で回収される。The pyrolysis gas taken out from the pyrolysis gas outlet 18 is guided to a catalytic cracking reactor 19 where it is catalytically cracked. In this catalytic cracking reactor 19, an iron-based catalyst is used to decompose a sublimable substance causing blockage of a pipe, and the obtained heavy component is further decomposed into a zeolite (Ni / REY).
Catalytically decomposes to light fuel oil by the catalyst. The catalytic cracking products are collected in the product collecting section 20.
【００１５】図２は得られた接触分解生成物の炭素数分
布を示すグラフである。このグラフに示されるように、
接触分解生成物はガソリン成分から重質成分まで幅広い
分布を持つが、炭素数が７〜１０にピークを持ち、市販
の灯油に類似していることから、燃料油として利用でき
ることが分かった。FIG. 2 is a graph showing the carbon number distribution of the obtained catalytic cracking product. As shown in this graph,
The catalytic cracking products have a wide distribution from gasoline components to heavy components, but have peaks at 7 to 10 carbon atoms and are similar to commercially available kerosene, indicating that they can be used as fuel oil.
【００１６】以上に説明した実施形態では、外部加熱装
置１０の内部に攪拌型反応器１１とタンク型反応器１２
とを収納したが、攪拌型反応器１１とタンク型反応器１
２とにそれぞれ加熱手段を設けてもよい。また、熱分解
ガス取り出し口１８から取り出された熱分解ガスの処理
方法は本発明の必須要件ではなく、一例を示したものに
過ぎない。In the embodiment described above, the stirring type reactor 11 and the tank type reactor 12 are provided inside the external heating device 10.
Were stored, but the stirring type reactor 11 and the tank type reactor 1
2 and 2 may each be provided with a heating means. Further, the method of treating the pyrolysis gas taken out from the pyrolysis gas take-out port 18 is not an essential requirement of the present invention, but is merely an example.
【００１７】[0017]
【発明の効果】以上に説明したように、本発明の混合廃
プラスチックの熱分解装置によれば、装置を大型化する
ことなくＰＥＴを含む混合廃プラスチックを熱分解する
ことができる。また炭化物の付着がないので装置のメン
テナンスも容易である。As described above, according to the mixed waste plastic pyrolysis apparatus of the present invention, the mixed waste plastic containing PET can be pyrolyzed without increasing the size of the apparatus. Further, since there is no adhesion of carbides, maintenance of the apparatus is easy.
【図１】本発明の実施形態を示す概略的な断面図であ
る。FIG. 1 is a schematic sectional view showing an embodiment of the present invention.
【図２】接触分解生成物の炭素数分布を示すグラフであ
る。FIG. 2 is a graph showing a carbon number distribution of a catalytic cracking product.
【図３】従来の攪拌型反応器の断面図である。FIG. 3 is a cross-sectional view of a conventional stirring type reactor.
【図４】従来のタンク型反応器の断面図である。FIG. 4 is a sectional view of a conventional tank-type reactor.
１ 攪拌型反応器、２ 充填物、３ 充填槽、４ 攪拌
翼、５ 熱分解ガス取り出し口、６ タンク型反応器、
７ 炉体、８ 攪拌翼、９ 炭化物、１０ 外部加熱装
置、１１ 攪拌型反応器、１２ タンク型反応器、１３
充填物、１４上部の攪拌翼、１５ 下部の攪拌翼、１
６ スチーム発生部、１７ スチーム予熱部、１８ 熱
分解ガス取り出し口、１９ 接触分解反応器、２０ 生
成物回収部1 stirred reactor, 2 packing materials, 3 filling tanks, 4 stirring blades, 5 pyrolysis gas outlet, 6 tank reactor,
7 furnace body, 8 stirring blade, 9 carbide, 10 external heating device, 11 stirring type reactor, 12 tank type reactor, 13
Filler, 14 upper stirring blade, 15 lower stirring blade, 1
6 steam generation section, 17 steam preheating section, 18 pyrolysis gas outlet, 19 catalytic cracking reactor, 20 product recovery section
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田 裕一 愛知県名古屋市瑞穂区須田町２番56号 日 本碍子株式会社内 (72)発明者 村上 収一 愛知県名古屋市瑞穂区須田町２番56号 日 本碍子株式会社内 (72)発明者 橋本 健治 京都府京田辺市田辺蕪木22の17 (72)発明者 増田 隆夫 京都府京都市北区紫竹東栗栖町49番地 ル ミエール北山401号 (72)発明者 串野 達彦 岡山県倉敷市広江３−１−62−5452 Ｆターム(参考） 4D004 AA07 AC05 BA03 CA24 CB04 CB05 CB27 CB31 CB43 4F301 AA13 AA25 CA09 CA24 CA42 CA52 CA63 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuichi Ikeda 2-56 Sudacho, Mizuho-ku, Nagoya City, Aichi Prefecture Inside Nihon Insulators Co., Ltd. (72) Inventor Shuichi Murakami 2nd Sudacho, Mizuho-ku, Nagoya City, Aichi Prefecture No. 56 Within Nihon Insulators Co., Ltd. ) Inventor Tatsuhiko Kushino 3-1-62-25452 Kuroe, Kurashiki-shi, Okayama F-term (reference) 4D004 AA07 AC05 BA03 CA24 CB04 CB05 CB27 CB31 CB43 4F301 AA13 AA25 CA09 CA24 CA42 CA52 CA63
Claims (2)
解装置であって、攪拌翼により充填物とともに混合廃プ
ラスチックを攪拌しながら水蒸気と接触させる攪拌型反
応器の下方に、滴下した溶融プラスチックを熱分解する
タンク型反応器を設置したことを特徴とする混合廃プラ
スチックの熱分解装置。An apparatus for thermally decomposing mixed waste plastics containing PET, wherein a stirrer impinges the mixed waste plastics together with the filler and the mixed waste plastics on a stirrer type reactor where the mixed waste plastics are brought into contact with water vapor. A pyrolysis apparatus for mixed waste plastics, comprising a tank-type reactor for decomposing.
に、熱分解ガス取り出し口を設けた請求項１に記載の混
合廃プラスチックの熱分解装置。2. The mixed waste plastic pyrolysis apparatus according to claim 1, wherein a pyrolysis gas outlet is provided between the stirring type reactor and the tank type reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00668899A JP3461134B2 (en) | 1999-01-13 | 1999-01-13 | Pyrolysis device for mixed waste plastic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00668899A JP3461134B2 (en) | 1999-01-13 | 1999-01-13 | Pyrolysis device for mixed waste plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000204376A true JP2000204376A (en) | 2000-07-25 |
| JP3461134B2 JP3461134B2 (en) | 2003-10-27 |
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| JP00668899A Expired - Fee Related JP3461134B2 (en) | 1999-01-13 | 1999-01-13 | Pyrolysis device for mixed waste plastic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005054082A (en) * | 2003-08-05 | 2005-03-03 | Matsushita Electric Works Ltd | Method for decomposing/recovering plastic |
| JP2018099635A (en) * | 2016-12-19 | 2018-06-28 | 株式会社Ｇｂ総合知財経営事務所 | Organic waste treatment system and organic waste treatment method |
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| JPH07268354A (en) * | 1994-03-30 | 1995-10-17 | Fuji Risaikuru Kk | Method for thermally decomposing waste plastic and device therefor |
| JPH07286185A (en) * | 1994-04-18 | 1995-10-31 | Hitachi Ltd | Method for treating mixed waste plastics and system therefor |
| WO1996040839A1 (en) * | 1995-06-07 | 1996-12-19 | Ngk Insulators, Ltd. | Process for producing low-boiling oil from waste plastics containing phthalic polyester and/or polyvinyl chloride |
| JPH0978072A (en) * | 1995-09-11 | 1997-03-25 | Komatsu Ltd | Decomposition of waste plastics and apparatus therefore |
| JPH1095984A (en) * | 1996-09-20 | 1998-04-14 | Mitsubishi Heavy Ind Ltd | Oil recovery from waste plastic |
| JPH10130659A (en) * | 1996-10-31 | 1998-05-19 | Takeshi Kuroki | Apparatus for decomposing plastic waste |
| JPH10195451A (en) * | 1996-12-27 | 1998-07-28 | Takashi Tachibana | Melting and pyrolysis of waste plastic, its melting and pyrolizing tank and liquefaction of melted and pyrolized plastic |
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1999
- 1999-01-13 JP JP00668899A patent/JP3461134B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07268354A (en) * | 1994-03-30 | 1995-10-17 | Fuji Risaikuru Kk | Method for thermally decomposing waste plastic and device therefor |
| JPH07286185A (en) * | 1994-04-18 | 1995-10-31 | Hitachi Ltd | Method for treating mixed waste plastics and system therefor |
| WO1996040839A1 (en) * | 1995-06-07 | 1996-12-19 | Ngk Insulators, Ltd. | Process for producing low-boiling oil from waste plastics containing phthalic polyester and/or polyvinyl chloride |
| JPH0978072A (en) * | 1995-09-11 | 1997-03-25 | Komatsu Ltd | Decomposition of waste plastics and apparatus therefore |
| JPH1095984A (en) * | 1996-09-20 | 1998-04-14 | Mitsubishi Heavy Ind Ltd | Oil recovery from waste plastic |
| JPH10130659A (en) * | 1996-10-31 | 1998-05-19 | Takeshi Kuroki | Apparatus for decomposing plastic waste |
| JPH10195451A (en) * | 1996-12-27 | 1998-07-28 | Takashi Tachibana | Melting and pyrolysis of waste plastic, its melting and pyrolizing tank and liquefaction of melted and pyrolized plastic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005054082A (en) * | 2003-08-05 | 2005-03-03 | Matsushita Electric Works Ltd | Method for decomposing/recovering plastic |
| JP2018099635A (en) * | 2016-12-19 | 2018-06-28 | 株式会社Ｇｂ総合知財経営事務所 | Organic waste treatment system and organic waste treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3461134B2 (en) | 2003-10-27 |
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