JP2000191826A - Method of recovering plastics - Google Patents
Method of recovering plasticsInfo
- Publication number
- JP2000191826A JP2000191826A JP37309398A JP37309398A JP2000191826A JP 2000191826 A JP2000191826 A JP 2000191826A JP 37309398 A JP37309398 A JP 37309398A JP 37309398 A JP37309398 A JP 37309398A JP 2000191826 A JP2000191826 A JP 2000191826A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- plastics
- tower
- thermal decomposition
- recovering
- 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- Withdrawn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
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02W30/20—Waste processing or separation
-
- 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、プラスチック類の
回収方法に係り、特に、廃プラスチック類から塩素成分
の少ないプラスチック類を処理の容易なペレットまたは
粉砕物として回収することができるプラスチック類の回
収方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering plastics, and more particularly, to a method for recovering plastics having a low chlorine content from waste plastics as pellets or crushed products which can be easily processed. It is about the method.
【０００２】[0002]
【従来の技術】近年、地球環境問題および廃棄物問題の
高まりにより、廃棄物を無公害で処理すること、再生し
て資源として有効利用することなど廃棄物対策の必要性
が強く叫ばれており、廃棄物の無公害化、再資源化の研
究が盛んに行われている。廃プラスチックについても同
様で、様々な処理、再生方法に係る研究が各所で行われ
ている。2. Description of the Related Art In recent years, with the rise of global environmental problems and waste problems, the necessity of waste countermeasures, such as the treatment of waste without pollution and the effective use of recycled resources as resources, has been strongly emphasized. Research on detoxification and recycling of waste has been actively conducted. The same applies to waste plastics, and research on various treatment and recycling methods is being conducted in various places.
【０００３】廃プラスチックのリサイクル方法は、マテ
リアルリサイクルとサーマルリサイクルとに大別でき、
サーマルリサイクルは、さらに廃プラスチックを直接燃
焼して熱を回収する方法と、一旦加工して燃料化し、最
終的にエネルギとして回収する方法とに分かれる。廃プ
ラスチックの燃料化方法としては、留出物として有用性
の高い油を回収することができる熱分解油化方法が注目
されている。[0003] Waste plastic recycling methods can be broadly divided into material recycling and thermal recycling.
Thermal recycling is further divided into a method of recovering heat by directly burning waste plastic, and a method of once processing and turning it into fuel and finally recovering it as energy. As a method for converting waste plastic into a fuel, a pyrolysis oil conversion method capable of recovering oil having high utility as a distillate has attracted attention.
【０００４】図２は、廃プラスチックを燃料化する従来
の熱分解油化方法のシステムフローを示す説明図であ
る。この熱分解油化方法は、被処理材料である廃プラス
チック４１を熱分解槽４２に供給し、加熱管４３によっ
て間接加熱して分解し、熱分解物を分留して分解ガス４
４と分解油４５を回収するものである。FIG. 2 is an explanatory diagram showing a system flow of a conventional thermal cracking oil conversion method for converting waste plastic into fuel. In this thermal decomposition oiling method, a waste plastic 41 as a material to be treated is supplied to a thermal decomposition tank 42, indirectly heated and decomposed by a heating pipe 43, and the pyrolyzed product is fractionated to generate a cracked gas 4.
4 and cracked oil 45 are collected.
【０００５】しかしながら、このような従来技術では塩
素含有プラスチックの熱分解によって生じた塩化水素
が、冷却過程で分解生成物と再反応して有機塩素化合物
となり、分解生成油中に多量の塩素が含まれることにな
る。すなわち、廃プラスチックには、通常、塩素系樹
脂、例えば塩化ビニルや塩化ビニリデンが５〜１０％程
度含まれており、これら塩素系樹脂から発生する塩化水
素（ＨＣｌ）が処理されないまま、分解生成油に含まれ
てくると、軽質油としての価値が低下し、燃料として使
用した場合は、ダイオキシン等の有害塩素化合物の発生
原因になるという問題があった。一方、分解生成油中の
塩素成分を取り除くために、別途脱塩素工程を設けた
り、加熱分解工程の前工程として脱塩素工程を設ける等
の提案がなされているが、工程および装置が極めて複雑
となるという問題があった。However, in such a conventional technique, hydrogen chloride generated by thermal decomposition of chlorine-containing plastics reacts with decomposition products in a cooling process to form an organic chlorine compound, and a large amount of chlorine is contained in the decomposition oil. Will be. That is, waste plastics usually contain about 5 to 10% of a chlorinated resin, for example, vinyl chloride or vinylidene chloride. , The value as light oil is reduced, and when used as a fuel, there is a problem that harmful chlorine compounds such as dioxin are generated. On the other hand, in order to remove the chlorine component in the cracked product oil, it has been proposed to provide a separate dechlorination step or to provide a dechlorination step as a step before the thermal decomposition step, but the process and equipment are extremely complicated. There was a problem of becoming.
【０００６】このような状況の下で、本発明者は、廃プ
ラスチック類の熱分解を途中まで進行させた時点で、所
定量を塔底から抜出油として抜き出し、冷却、固化した
物は容易に粉砕またはペレット化され、脱塩素化燃料と
して有効に再利用できることを見出し、鋭意研究の結
果、本発明に到達したものである。[0006] Under such circumstances, the present inventor, at the point when the thermal decomposition of waste plastics has progressed halfway, withdraws a predetermined amount from the bottom of the tower as oil, and cools and solidifies the oil. The present invention has been found to be pulverized or pelletized and can be effectively reused as a dechlorinated fuel, and as a result of earnest research, the present invention has been achieved.
【０００７】[0007]
【発明が解決しようとする課題】本発明の目的は、上記
従来技術の問題点を解決し、処理工程および装置が簡単
で、しかも廃プラスチック類を塩素含有量の少ない粉砕
物またはペレットを回収することができるプラスチック
類の回収方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, to simplify the processing steps and equipment, and to recover pulverized materials or pellets from waste plastics having a low chlorine content. It is an object of the present invention to provide a method for collecting plastics that can be used.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
本願で特許請求される発明は以下のとおりである。 （１）塩素化合物を含む廃プラスチック類を熱分解塔に
供給して加熱分解し、塔頂から分解ガスおよび分解油、
並びに塔底から抜出油をそれぞれ回収するプラスチック
類の回収方法において、３５０〜４５０℃で、原料の２
０〜６０重量％がガス化するまで熱分解を行った後、塔
底から原料の４０〜８０重量％を抜出油として回収し、
該抜出油を冷却固化し、ペレット化または粉砕すること
を特徴とするプラスチック類の回収方法。 （２）前記原料として供給した廃プラスチック類の６０
〜８０重量％を抜出油として回収する（１）に記載の廃
プラスチック類の回収方法。 （３）前記熱分解塔として、空塔部に酸化鉄または水酸
化鉄を含む塩素化合物除去触媒を充填した塔を用い、前
記熱分解塔内の分解ガス中の塩素化合物を除去すること
を特徴とする（１）または（２）に記載のプラスチック
類の回収方法。The invention claimed in the present application to achieve the above object is as follows. (1) Waste plastics containing chlorine compounds are supplied to a pyrolysis tower to be thermally decomposed, and cracked gas and cracked oil,
In addition, in the method of recovering plastics for recovering oil extracted from the bottom of the tower, the raw material 2
After performing pyrolysis until 0 to 60% by weight is gasified, 40 to 80% by weight of the raw material is recovered as an extraction oil from the bottom of the column,
A method for recovering plastics, wherein the extracted oil is cooled and solidified, and pelletized or pulverized. (2) 60 of the waste plastics supplied as the raw material
The method for collecting waste plastics according to (1), wherein 〜80% by weight is recovered as extracted oil. (3) As the pyrolysis tower, a tower in which an empty column is filled with a chlorine compound removal catalyst containing iron oxide or iron hydroxide is used, and a chlorine compound in a decomposition gas in the pyrolysis tower is removed. The method for collecting plastics according to (1) or (2).
【０００９】本発明において、廃プラスチックス原料と
しては、ポリ塩化ビニル（ＰＶＣ）、ポリ塩化ビニリデ
ン等を含む樹脂混合物、例えばポリエチレン（ＰＥ）、
ポリプロピレン（ＰＰ）、ポリスチレン（ＰＳ）等との
混合物があげられるが、これらに限定されるものではな
い。In the present invention, waste plastics raw materials include a resin mixture containing polyvinyl chloride (PVC), polyvinylidene chloride, etc., for example, polyethylene (PE),
Examples thereof include a mixture with polypropylene (PP), polystyrene (PS), and the like, but are not limited thereto.
【００１０】本発明における熱分解温度は、３５０〜４
５０℃、好ましくは３８０〜４３０℃である。３５０℃
未満では、廃プラスチック類が熱分解するまでに時間が
かかり、また４５０℃を超えると分解ガス（油）成分が
多くなり、塔底から抜き出し油として回収される成分が
少なくなるので、所定割合の抜き出し油が得られなくな
る。また熱分解時間（滞留時間）は、原料の２０〜６０
重量％がガス化し、原料の４０〜８０重量％が塔底から
抜き出し油として回収できるような時間であればよい。
これらの熱分解時間は、常圧で０．５時間〜３時間の範
囲である。The thermal decomposition temperature in the present invention is 350 to 4
The temperature is 50C, preferably 380-430C. 350 ° C
When the temperature is less than 450 ° C., it takes time until the waste plastics are thermally decomposed. When the temperature exceeds 450 ° C., the decomposition gas (oil) component increases, and the component recovered as oil extracted from the bottom of the tower decreases. Extracted oil cannot be obtained. The thermal decomposition time (residence time) is 20 to 60
It suffices if the time is such that the weight% is gasified and 40 to 80 weight% of the raw material can be recovered as oil extracted from the bottom of the column.
These pyrolysis times range from 0.5 hours to 3 hours at normal pressure.
【００１１】本発明において、抜き出し油として回収さ
れた液状油は、適当な粘度でそのままペレタイザーにか
けて冷却、固化、造粒されるか、またはそのまま冷却し
て塊状物として得た後、これを粉砕機にかけて粒状物ま
でに粉砕するか、または粉砕物をペレタイザーにかけて
ペレット化する。冷却手段は空冷または水冷のどちらで
もよい。In the present invention, the liquid oil recovered as the extracted oil is cooled, solidified, and granulated with an appropriate viscosity as it is through a pelletizer, or is cooled as it is to obtain a mass, which is then pulverized. Or pulverized to a granulate or pelletized by a pelletizer. The cooling means may be either air-cooled or water-cooled.
【００１２】本発明に用いる熱分解塔としては、加熱装
置および攪拌装置を備えた容器であればよいが、空塔部
に酸化鉄または水酸化鉄を含む塩素化合物除去用触媒を
充填した容器を用いてもよい。このような塔を用いた場
合には、熱分解塔内で発生した塩素化合物が塔内で分解
除去された後、排出されるので、塔頂からの分解ガス
（油）の脱塩素化も同時に行うこともできる。上記触媒
としては、本出願人の先願に係る特願平１０−１５９４
７５号に開示された酸化鉄または水酸化鉄を好適に用い
ることができる。The pyrolysis tower used in the present invention may be any vessel provided with a heating device and a stirring device, but a vessel in which an empty column is filled with a catalyst for removing chlorine compounds containing iron oxide or iron hydroxide is used. May be used. When such a tower is used, chlorine compounds generated in the pyrolysis tower are decomposed and removed in the tower, and then discharged, so that the dechlorination of cracked gas (oil) from the top of the tower is performed at the same time. You can do it too. The above-mentioned catalyst is disclosed in Japanese Patent Application No. 10-1594, which is filed by the applicant of the present invention.
Iron oxide or iron hydroxide disclosed in No. 75 can be suitably used.
【００１３】[0013]
【発明の実施の形態】次に、本発明を実施例によりさら
に詳細に説明する。図１は、本発明のあるプラスチック
類の回収方法の一実施例を示す系統図である。図におい
て、この装置は、廃プラスチック類１７を受け入れて貯
留する受入槽１と、異物を取り除く分別機、粉砕機等か
らなる前処理装置２と、前処理後の廃プラスチック類を
熱分解槽４に導入する供給機３と、前記熱分解槽４内に
設けられた加熱コイル５と、該加熱コイル５に燃焼ガス
を送る燃焼器６と、熱分解物を冷却して分解油９および
分解ガス１０に分ける凝縮器８と、熱分解槽４の底部配
管に設けられた塔底油抜き出し配管１４と、該配管１４
に設けられた抜き出しポンプ１３、冷却器２０およびペ
レタイザー２０とから主として構成されている。なお、
１１は、廃プラスチックから分別された異物、１２は、
熱分解槽４に設けられた攪拌機、１５は、燃焼器６に供
給される燃料、１６は、凝縮器８に導入される冷却媒
体、２１は回収ペレットである。Next, the present invention will be described in more detail by way of examples. FIG. 1 is a system diagram showing one embodiment of a method for collecting plastics according to the present invention. In the figure, this apparatus includes a receiving tank 1 for receiving and storing waste plastics 17, a pretreatment device 2 including a sorter and a crusher for removing foreign substances, and a thermal decomposition tank 4 for separating waste plastics after pretreatment. , A heating coil 5 provided in the pyrolysis tank 4, a combustor 6 for sending a combustion gas to the heating coil 5, a decomposed oil 9 and a decomposed oil 9 for cooling the pyrolyzed product 10; a bottom oil extraction pipe 14 provided in a bottom pipe of the pyrolysis tank 4;
, A drawer 13, a cooler 20, and a pelletizer 20. In addition,
11 is a foreign substance separated from waste plastic, 12 is
A stirrer provided in the pyrolysis tank 4, 15 is a fuel supplied to the combustor 6, 16 is a cooling medium introduced into the condenser 8, and 21 is a recovered pellet.
【００１４】このような構成において、廃プラスチック
類１７は受入槽１に受け入れられたのち、前処理装置２
で金属片等の異物が取り除かれるとともに所定の大きさ
に粉砕される。粉砕された廃プラスチック１７は、供給
機３によって、例えば１００ｋｇ／ｈで熱分解槽４に供
給され、燃焼器６で発生した燃焼ガスが流通する加熱コ
イル５によって、所定時間、３５０〜４５０℃の温度で
間接加熱されるとともに攪拌機１２によって攪拌されて
分解する。分解によって発生したプラスチック熱分解物
は、後流の凝縮器８に流入し、ここで、例えば５０〜３
００℃に冷却されて分解油９と分解ガス１０とに分けて
回収され、一方、塔底からは抜き出し油がポンプ１３に
より配管１４を通って抜き出され、さらに冷却器１９で
造粒に適した粘度まで冷却された後、ペレタイザー２０
に入り、ペレタイズされ、ペレット２１として回収され
る。In such a configuration, after the waste plastics 17 are received in the receiving tank 1, the pre-processing device 2
Then, foreign substances such as metal pieces are removed and crushed to a predetermined size. The pulverized waste plastic 17 is supplied to the pyrolysis tank 4 at, for example, 100 kg / h by the feeder 3, and is heated at 350 to 450 ° C. for a predetermined time by the heating coil 5 through which the combustion gas generated in the combustor 6 flows. It is indirectly heated at a temperature and stirred by the stirrer 12 to decompose. The plastic pyrolyzate generated by the decomposition flows into the downstream condenser 8, where, for example, 50 to 3
After being cooled to 00 ° C., the oil is separated into cracked oil 9 and cracked gas 10 and recovered. On the other hand, oil extracted from the bottom of the tower is extracted through a pipe 14 by a pump 13, and further suitable for granulation by a cooler 19. After cooling to a viscosity, the pelletizer 20
And pelletized and collected as pellets 21.
【００１５】上記熱分解温度および時間は、原料の２０
〜６０重量％が塔頂からの分解物として、および原料の
４０〜８０重量％が塔底からの抜き出し油として回収さ
れるように調整される。このようにして得られた抜き出
し油中には、塩素含有量が一般には極めて少ないので、
これをペレット化または粉砕した回収物は、取扱いが容
易であるうえに、燃料として、例えばそのまま高炉に吹
き込んだり、油化分解、粉体燃料などの原料として、有
効に再利用することができる。The above-mentioned pyrolysis temperature and time are set at 20
It is adjusted so that ６０60% by weight is recovered as a decomposition product from the top of the column, and 40 to 80% by weight of the raw material is recovered as oil extracted from the bottom of the column. In the extracted oil thus obtained, the chlorine content is generally extremely low,
The pelletized or pulverized recovered material is easy to handle, and can be effectively reused as a fuel, for example, blown into a blast furnace as it is, or as a raw material for oily decomposition, powdered fuel, and the like.
【００１６】塔頂から配管１８を通って排出されたガス
は、凝縮器８で凝縮され、分解油９および分解ガス１０
となる。分解油９および分解ガス１０中の塩素成分は、
前述のように熱分解塔内に脱塩素装置を有する場合は脱
塩素化されているが、そうでない場合は別途公知の方法
により脱塩素化された後、燃料等に再利用することがで
きる。The gas discharged from the top of the tower through a pipe 18 is condensed in a condenser 8 and is decomposed in a decomposed oil 9 and a decomposed gas 10.
Becomes The chlorine component in the cracked oil 9 and the cracked gas 10 is
As mentioned above, when the pyrolysis tower has a dechlorination device, it is dechlorinated. Otherwise, it can be dechlorinated by a known method and then reused as fuel.
【００１７】以下、本発明の具体的実施例を述べる。図
１に示す熱分解塔（容量１m2）に、原料としてポリプロ
ピレン２５重量％、ポリスチレン３５重量％、ポリエス
テル２重量％、ＡＢＳ樹脂１重量％、ポリエチレン（Ｐ
Ｅ）３４〜３６重量％、ポリ塩化ビニル（ＰＶＣ）１〜
３重量％からなる混合物を供給し、熱分解温度４００〜
４２０℃、熱分解時間０．８〜１．５時間で熱分解試験
を行った。塔底液の抜き出し率を４０〜８０％、分解ガ
ス２０〜６０％とした時の分解ガス、分解油および抜き
出し油の組成、平均分子量、塩素含有量等の結果を表１
に示す。Hereinafter, specific embodiments of the present invention will be described. In the pyrolysis tower (capacity: 1 m 2 ) shown in FIG. 1, 25 wt% of polypropylene, 35 wt% of polystyrene, 2 wt% of polyester, 1 wt% of ABS resin, polyethylene (P
E) 34-36% by weight, polyvinyl chloride (PVC) 1
A mixture consisting of 3% by weight is supplied, and a thermal decomposition temperature of 400 to
A thermal decomposition test was performed at 420 ° C. for a thermal decomposition time of 0.8 to 1.5 hours. Table 1 shows the results of the composition, average molecular weight, chlorine content, and the like of the cracked gas, cracked oil and withdrawn oil when the extraction ratio of the bottom liquid was 40 to 80% and the cracked gas was 20 to 60%.
Shown in
【００１８】[0018]
【表１】 [Table 1]
【００１９】表１の結果から明らかなように、抜き出し
油中の塩素含有量は、分解ガスおよび分解油中の塩素量
と比較して２５〜６０ｐｐｍと著しく少なくなってお
り、脱塩素化されていることが明らかである。得られた
抜き出し油を冷却器１９で１７０〜２３０℃に冷却し、
粘土状になったスラリを市販のペレタイザー２０に供給
し、ダイから押し出して切断し、径５．２ｍｍ、長さ
８．５ｍｍのペレットを得た。このようにして得られた
ペレットは、脱塩素化燃料として有効に利用することが
できた。As is clear from the results shown in Table 1, the chlorine content in the extracted oil is remarkably reduced to 25 to 60 ppm as compared with the chlorine amount in the cracked gas and the cracked oil. It is clear that there is. The obtained extracted oil is cooled to 170 to 230 ° C. in the cooler 19,
The clay-like slurry was supplied to a commercially available pelletizer 20, extruded from a die, and cut to obtain pellets having a diameter of 5.2 mm and a length of 8.5 mm. The pellets thus obtained could be effectively used as a dechlorinated fuel.
【００２０】図１に示した熱分解塔４の空塔部に充填槽
を設け、脱塩素剤として１．５×７ｍｍの円筒状に成形
した水酸化鉄α−ＦｅＯＯＨを充填し、同様な条件で熱
分解したところ、分解ガスおよび分解油中の塩素も同時
に脱塩することができた。A filling tank is provided in an empty space of the pyrolysis tower 4 shown in FIG. 1 and filled with iron hydroxide α-FeOOH formed into a cylindrical shape of 1.5 × 7 mm as a dechlorinating agent. As a result, chlorine in the cracked gas and the cracked oil could be desalted at the same time.
【００２１】[0021]
【発明の効果】本発明によれば、廃プラスチック類を、
取扱いが容易でかつ塩素含有量の少ない粉砕物またはペ
レットとして回収し、燃料等として有効に再利用するこ
とができる。また本発明方法は、従来の熱分解方法のよ
うに分解ガスの取得を主体とするものではないので、処
理温度が低く、装置化が容易であるという利点がある。According to the present invention, waste plastics are
It is easy to handle and can be recovered as pulverized materials or pellets having a low chlorine content, and can be effectively reused as fuel or the like. Further, the method of the present invention does not mainly involve the acquisition of a decomposed gas unlike the conventional thermal decomposition method, and thus has the advantages of a low processing temperature and easy equipment.
【図１】 本発明の廃プラスチック類の回収方法の一実
施例を示す説明図。FIG. 1 is an explanatory view showing one embodiment of a method for collecting waste plastics of the present invention.
【図２】 従来の廃プラスチック類の熱分解装置を一例
を示す説明図。FIG. 2 is an explanatory view showing an example of a conventional waste plastic pyrolysis apparatus.
１…受入槽、２…前処理装置、３…供給機、４…熱分解
塔、５…加熱コイル、６燃焼器、８…凝縮器、９…分解
油、１０…分解ガス、１２…攪拌機、１３…抜き出しポ
ンプ、１４…塔底油抜き出し配管、１５…燃料、１７…
廃プラスチック類、１９…冷却器、２０…ペレタイザ
ー、２１…回収ペレット。DESCRIPTION OF SYMBOLS 1 ... Receiving tank, 2 ... Pretreatment apparatus, 3 ... Feeder, 4 ... Pyrolysis tower, 5 ... Heating coil, 6 combustor, 8 ... Condenser, 9 ... Cracked oil, 10 ... Cracked gas, 12 ... Stirrer, 13: extraction pump, 14: tower bottom oil extraction pipe, 15: fuel, 17 ...
Waste plastics, 19 ... cooler, 20 ... pelletizer, 21 ... recovered pellets.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ１０Ｌ 5/48 Ｂ０９Ｂ 3/00 ３０２Ａ ４Ｈ０２９ ３０３Ｇ Ｆターム(参考） 4D004 AA07 AB06 AC05 BA03 CA04 CA14 CA24 CA25 CA27 CA32 CA34 CB02 CB34 CB36 CC09 4D048 AA11 AB03 BA36X BA41Y BA50X BB01 CA03 CD10 4F301 AA13 AA14 AA15 AA16 AA17 CA09 CA11 CA25 CA26 CA33 CA34 CA42 CA52 CA63 CA71 CA72 4G069 AA02 BB04A BB05A BB05B BC66A BC66B CA04 CA10 CA19 DA06 EA02Y EB14Y 4H015 AA02 AA17 AB01 BA08 BA12 BB02 BB03 BB06 CA03 CB01 4H029 CA00 CA01 CA14 DA00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C10L 5/48 B09B 3/00 302A 4H029 303G F-term (Reference) 4D004 AA07 AB06 AC05 BA03 CA04 CA14 CA24 CA25 CA27 CA32 CA34 CB02 CB34 CB36 CC09 4D048 AA11 AB03 BA36X BA41Y BA50X BB01 CA03 CD10 4F301 AA13 AA14 AA15 AA16 AA17 CA09 CA11 CA25 CA26 CA33 CA34 CA42 CA52 CA63 CA71 CA72 4G069 AA02 BB04A BB05A02 CA03 CA03 CA04 BB02 BB03 BB06 CA03 CB01 4H029 CA00 CA01 CA14 DA00
Claims (3)
分解塔に供給して加熱分解し、塔頂から分解ガスおよび
分解油、並びに塔底から抜出油をそれぞれ回収するプラ
スチック類の回収方法において、３５０〜４５０℃で、
原料の２０〜６０重量％がガス化するまで熱分解を行っ
た後、塔底から原料の４０〜８０重量％を抜出油として
回収し、該抜出油を冷却固化し、ペレット化または粉砕
することを特徴とするプラスチック類の回収方法。1. A method for recovering plastics, wherein waste plastics containing chlorine compounds are supplied to a pyrolysis tower to be thermally decomposed, and cracked gas and cracked oil are recovered from the top of the tower, and oil extracted from the bottom of the tower. At 350-450 ° C,
After performing pyrolysis until 20 to 60% by weight of the raw material is gasified, 40 to 80% by weight of the raw material is recovered from the bottom of the column as extracted oil, and the extracted oil is cooled and solidified, and pelletized or pulverized. A method for collecting plastics.
類の６０〜８０重量％を抜出油として回収する請求項１
に記載の廃プラスチック類の回収方法。2. The method according to claim 1, wherein 60 to 80% by weight of the waste plastics supplied as the raw material is recovered as an extraction oil.
The method for collecting waste plastics described in the above.
たは水酸化鉄を含む塩素化合物除去触媒を充填した塔を
用い、前記熱分解塔内の分解ガス中の塩素化合物を除去
することを特徴とする請求項１または２に記載のプラス
チック類の回収方法。3. A method in which a chlorine compound removal catalyst containing iron oxide or iron hydroxide is filled in an empty column as said thermal decomposition tower, and a chlorine compound in a cracked gas in said thermal decomposition tower is removed. The method for recovering plastics according to claim 1 or 2, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37309398A JP2000191826A (en) | 1998-12-28 | 1998-12-28 | Method of recovering plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37309398A JP2000191826A (en) | 1998-12-28 | 1998-12-28 | Method of recovering plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000191826A true JP2000191826A (en) | 2000-07-11 |
Family
ID=18501568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37309398A Withdrawn JP2000191826A (en) | 1998-12-28 | 1998-12-28 | Method of recovering plastics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000191826A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002008326A1 (en) * | 2000-07-25 | 2002-01-31 | Taiko Tec Co., Ltd. | Method and apparatus for pyrolysis |
| JP2005036098A (en) * | 2003-07-14 | 2005-02-10 | Dainen Co Ltd | Thermally-decomposed waste-plastic binder and method for producing the same |
| CN104845655A (en) * | 2015-05-29 | 2015-08-19 | 鄄城华奥再生能源科技有限公司 | Waste plastic cracking device |
| CN113453783A (en) * | 2018-10-18 | 2021-09-28 | 阿科玛法国公司 | Method for treating gaseous effluents resulting from the pyrolysis of polymers |
-
1998
- 1998-12-28 JP JP37309398A patent/JP2000191826A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002008326A1 (en) * | 2000-07-25 | 2002-01-31 | Taiko Tec Co., Ltd. | Method and apparatus for pyrolysis |
| JP2005036098A (en) * | 2003-07-14 | 2005-02-10 | Dainen Co Ltd | Thermally-decomposed waste-plastic binder and method for producing the same |
| CN104845655A (en) * | 2015-05-29 | 2015-08-19 | 鄄城华奥再生能源科技有限公司 | Waste plastic cracking device |
| CN113453783A (en) * | 2018-10-18 | 2021-09-28 | 阿科玛法国公司 | Method for treating gaseous effluents resulting from the pyrolysis of polymers |
| CN113453783B (en) * | 2018-10-18 | 2024-03-01 | 阿科玛法国公司 | Method for treating gaseous effluents produced by pyrolysis of polymers |
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