JPS59183209A - Fluidized-bed combustion method for refuse containing large amount of waste plastic - Google Patents
Fluidized-bed combustion method for refuse containing large amount of waste plasticInfo
- Publication number
- JPS59183209A JPS59183209A JP5727783A JP5727783A JPS59183209A JP S59183209 A JPS59183209 A JP S59183209A JP 5727783 A JP5727783 A JP 5727783A JP 5727783 A JP5727783 A JP 5727783A JP S59183209 A JPS59183209 A JP S59183209A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- refuse
- waste
- waste plastic
- fluidized medium
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、廃プラスチックを多量に含有するごみを流動
床炉において効率よくかつ安全に燃焼させる方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for efficiently and safely burning waste containing a large amount of waste plastic in a fluidized bed furnace.
廃プラスチックを多量に含有するごみを流動床炉で燃焼
させる場合、廃プラスチックは見掛比重が小さい。すな
わち重量当りの容積が大きくて嵩張っているため、搬送
装置が大きくなり、また定量供給が難しいという問題点
がある。さらに嵩張ったものを取り扱うので炉内シール
が難しく、炉内からのガスで廃プラスチックが低温度で
溶融、ガス化し、ときには逆火のトラブルが発生するな
どの問題点があった。When waste containing a large amount of waste plastic is burned in a fluidized bed furnace, the waste plastic has a small apparent specific gravity. That is, since the volume per weight is large and bulky, there are problems in that the transport device becomes large and it is difficult to supply a fixed amount. Furthermore, since bulky items are handled, it is difficult to seal the inside of the furnace, and the gas from inside the furnace melts and gasifies the waste plastic at low temperatures, sometimes causing backfire problems.
本発明は上記の問題点を解決するためになされたもので
、流動床炉から加熱された高温の珪砂などの流動媒体を
炉底から強制的に抜き出し、この高温の流動媒体(15
0〜300°C)と廃プラスチックを多量に含有するご
みとを混合して熱可塑性のプラスチックを軟化、溶融、
収縮させて全体のごみの比重を大きくシ、すなわち嵩を
小さくして、この比重の大きくなったごみを流動床かに
供給することにより、ごみの搬送装置を簡略化し、かつ
燃焼性を改善するようにした廃プラスチックを多量に含
有捗るごみの流動床燃焼方法を提供せんとするものであ
る。The present invention has been made to solve the above problems, and involves forcibly extracting a fluidized medium such as high-temperature silica sand heated from a fluidized bed furnace from the bottom of the furnace.
0 to 300°C) and garbage containing a large amount of waste plastic to soften, melt, and melt the thermoplastic.
By shrinking the entire waste to increase its specific gravity, i.e., reduce its bulk, and supplying this increased specific gravity to a fluidized bed, the waste conveyance device is simplified and the combustibility is improved. The present invention aims to provide a fluidized bed combustion method for waste containing a large amount of waste plastic.
以下、本発明の構成を図面に基づいて説明する。Hereinafter, the configuration of the present invention will be explained based on the drawings.
第1図において、流動床炉1から排出された高温の珪砂
などの流動媒体と不燃物との混合物は振動ふるいなどの
分離装置2へ送られ、高温の流動媒体と不燃物とに分離
され、高温の流動媒体は混合機乙に送られ、ここで廃プ
ラスチックを多量に含有するごみと混合、攪拌される。In FIG. 1, a mixture of a fluidized medium such as high-temperature silica sand and incombustibles discharged from a fluidized bed furnace 1 is sent to a separator 2 such as a vibrating sieve, where it is separated into a high-temperature fluidized medium and incombustibles. The high-temperature fluid medium is sent to mixer B, where it is mixed and stirred with garbage containing a large amount of waste plastic.
廃プラスチックは100°C程度より軟化するものが多
いので、この特性を利用して上記の操作のように廃プラ
スチックに150〜300°Cに加熱された流動媒体を
加えて、ごみに含まれる廃プラスチックを軟化、溶融、
縮小化しごみの見掛比重を高める。すなわち廃プラスチ
ックは加熱された流動媒体と接触して軟化、縮小化する
とともに、流動媒体が付着して流動媒体と廃プラスチツ
ク軟化物とごみとの造粒物状になり、ごみの見掛比重が
高められて嵩が小さくなり、ごみの定量供給が可能とな
る。混合機乙においてごみ中の水分により、流動媒体は
冷却され、供給フィーダ4に投入するときには充分冷却
されているが、ごみ中の水分が少ない場合には、安全の
ため混合機乙の出口付近にて注水を行なう。Since most waste plastics soften at temperatures above about 100°C, this property can be used to add a fluid medium heated to 150 to 300°C to the waste plastics as described above to soften the waste contained in the waste. Softens and melts plastic,
Reduce the size and increase the apparent weight of garbage. In other words, the waste plastic comes into contact with the heated fluidized medium, softens and shrinks, and the fluidized medium adheres to it, forming a granule of the fluidized medium, softened waste plastic, and garbage, and the apparent specific gravity of the garbage decreases. This height reduces the bulk, making it possible to supply a fixed amount of waste. In mixer B, the fluid medium is cooled by the moisture in the waste, and is sufficiently cooled when it is fed into the supply feeder 4. However, if the moisture in the waste is low, for safety reasons, the fluid medium is cooled near the outlet of mixer B. Inject water.
混合機6として、第1図に示すようなキルン型の混合機
の代りに、第2図に示すようなパドルミキサー型の混合
機6aを用いることも可能である。As the mixer 6, it is also possible to use a paddle mixer type mixer 6a as shown in FIG. 2 instead of the kiln type mixer as shown in FIG.
混合機6で発生する水蒸気、廃プラスチックの一部分解
ガスなどのガスは、送風機5で吸引して、流動床炉1内
の上部の燃焼室(フリーボード)6へ導入し、廃プラス
チックの分解ガスなどを高温酸化分解する。Gases such as water vapor and partially decomposed gas from waste plastics generated in the mixer 6 are sucked by the blower 5 and introduced into the combustion chamber (free board) 6 at the upper part of the fluidized bed furnace 1, where the decomposed gas from the waste plastics is absorbed. High-temperature oxidation decomposition of etc.
混合機3で造粒物状になった流動媒体と廃プラスチツク
軟化物とごみとの混合物は供給フィーダ4に送られる。The mixture of the fluidized medium, softened waste plastic, and garbage, which has been turned into granules by the mixer 3, is sent to the supply feeder 4.
この混合物は見掛比重が大きく、かさが小さくなり、供
給フィーダ4で圧密され易くなるので、シール性が増し
逆火防止が可能となり、かつ定量切出しを容易に行なう
ことができるようになる。供給フィーダ4においても、
安全のため冷却用に水または冷却空気を供給する。This mixture has a large apparent specific gravity, a small bulk, and is easily compacted in the supply feeder 4, which improves sealing performance, prevents flashback, and facilitates quantitative cutting. Also in the supply feeder 4,
Supply water or cooled air for cooling for safety.
圧密された混合物は、流動媒体が廃プラスチックに付着
し巻き込まれているので廃プラスチツク自身の見掛比重
が太き・くなっているので、流動床炉1の流動層7内に
もぐり込み易くなり、流動層7内での燃焼率が増し、運
転操作性をより向上させることができる。8は空気分散
板、9は風箱、10は流動媒体排出装置である。In the consolidated mixture, since the fluidized medium is attached to and entangled with the waste plastic, the apparent specific gravity of the waste plastic itself becomes thicker and more likely to sink into the fluidized bed 7 of the fluidized bed furnace 1. , the combustion rate within the fluidized bed 7 increases, and operational operability can be further improved. 8 is an air distribution plate, 9 is a wind box, and 10 is a fluidized medium discharge device.
以上説明したように、本発明の方法で前処理を行なった
廃プラスチツク含有ごみの見掛比重は、前処理のないも
のに比べて非常に大きなものとすることができるので、
搬送を容易に行なうことができ、かつ逆火のトラブルを
防止することができ、さらに従来のような流動層界面の
みでの燃焼でなく、流動層内全体を有効に使った燃焼が
可能となり、廃プラスチツク含有ごみの完全燃焼を図る
ことができるという効果を奏する。As explained above, the apparent specific gravity of waste containing waste plastics pretreated by the method of the present invention can be made much larger than that without pretreatment.
It is easy to transport, prevents backfire problems, and enables effective use of the entire fluidized bed instead of combustion only at the interface of the fluidized bed as in the past. The effect is that it is possible to achieve complete combustion of garbage containing waste plastics.
第1図は本発明の方法を実施する装置の一例を示す系統
的説明図、第2図は混合機の他の例を示す説明図である
。
1・・・流動床炉、2・・・分離装置、6.3a・・・
混合機、4・・・供給フィーダ、5・・・送風機、6・
・・燃焼室、7・・・流動層、8・・・空気分散板、9
・・・風箱、10・・・流動媒体排出装置
特許出願人 川崎重工業株式会社
代理人弁理士塩出真−1・−′FIG. 1 is a systematic explanatory diagram showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is an explanatory diagram showing another example of a mixer. 1... Fluidized bed furnace, 2... Separation device, 6.3a...
Mixer, 4... Supply feeder, 5... Blower, 6.
... Combustion chamber, 7... Fluidized bed, 8... Air distribution plate, 9
...Wind box, 10...Patent applicant for fluidized medium discharge device Makoto Shiide, patent attorney representing Kawasaki Heavy Industries, Ltd. -1・-'
Claims (1)
この高温の流動媒体と廃プラスチックを多量に含有する
ごみとを混合して熱可塑性のプラスチックを軟化、溶融
、収縮させた後、比重の大きくなったごみを流動床炉に
供給することを特徴とする豚プラスチックを多量に含有
するごみの流動床燃焼方法。1 Pull out the high temperature fluidized medium from the bottom of the fluidized bed furnace,
The feature is that this high-temperature fluid medium is mixed with waste containing a large amount of waste plastic to soften, melt, and shrink the thermoplastic plastic, and then the waste with increased specific gravity is supplied to a fluidized bed furnace. Fluidized bed combustion method for waste containing large amounts of plastic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5727783A JPS59183209A (en) | 1983-03-31 | 1983-03-31 | Fluidized-bed combustion method for refuse containing large amount of waste plastic |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5727783A JPS59183209A (en) | 1983-03-31 | 1983-03-31 | Fluidized-bed combustion method for refuse containing large amount of waste plastic |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59183209A true JPS59183209A (en) | 1984-10-18 |
Family
ID=13051038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5727783A Pending JPS59183209A (en) | 1983-03-31 | 1983-03-31 | Fluidized-bed combustion method for refuse containing large amount of waste plastic |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59183209A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0446888A2 (en) * | 1990-03-15 | 1991-09-18 | Osaka Gas Co., Ltd. | Incinerating-fusing system for city refuse disposal |
WO1994017332A2 (en) * | 1993-01-23 | 1994-08-04 | L.& C. Steinmüller Gmbh | Process for burning substantially plastic waste, in particular pvc waste |
WO1995023317A1 (en) * | 1994-02-25 | 1995-08-31 | Fm Industrie | Method and plant for waste treatment by drying, sublimation, oxidation and combustion |
JP2021046543A (en) * | 2019-09-11 | 2021-03-25 | Jfeエンジニアリング株式会社 | Solidified fuel and method of incinerating incineration object |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57104021A (en) * | 1980-12-18 | 1982-06-28 | Mitsubishi Heavy Ind Ltd | Method for disposal of waste plastic |
-
1983
- 1983-03-31 JP JP5727783A patent/JPS59183209A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57104021A (en) * | 1980-12-18 | 1982-06-28 | Mitsubishi Heavy Ind Ltd | Method for disposal of waste plastic |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0446888A2 (en) * | 1990-03-15 | 1991-09-18 | Osaka Gas Co., Ltd. | Incinerating-fusing system for city refuse disposal |
WO1994017332A2 (en) * | 1993-01-23 | 1994-08-04 | L.& C. Steinmüller Gmbh | Process for burning substantially plastic waste, in particular pvc waste |
WO1994017332A3 (en) * | 1993-01-23 | 1994-09-29 | Steinmueller Gmbh L & C | Process for burning substantially plastic waste, in particular pvc waste |
US5551358A (en) * | 1993-01-23 | 1996-09-03 | L. & C. Steinmuller Gmbh | Method of burning waste, especially PVC waste, comprised essentially of plastic |
WO1995023317A1 (en) * | 1994-02-25 | 1995-08-31 | Fm Industrie | Method and plant for waste treatment by drying, sublimation, oxidation and combustion |
JP2021046543A (en) * | 2019-09-11 | 2021-03-25 | Jfeエンジニアリング株式会社 | Solidified fuel and method of incinerating incineration object |
JP2022043107A (en) * | 2019-09-11 | 2022-03-15 | Jfeエンジニアリング株式会社 | Sludge incineration device and sludge incineration method |
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