JP2002115826A - Waste melting furnace - Google Patents
Waste melting furnaceInfo
- Publication number
- JP2002115826A JP2002115826A JP2000306724A JP2000306724A JP2002115826A JP 2002115826 A JP2002115826 A JP 2002115826A JP 2000306724 A JP2000306724 A JP 2000306724A JP 2000306724 A JP2000306724 A JP 2000306724A JP 2002115826 A JP2002115826 A JP 2002115826A
- Authority
- JP
- Japan
- Prior art keywords
- waste
- furnace
- cavity
- wall
- melting furnace
- 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
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gasification And Melting Of Waste (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、都市ごみ、産業廃
棄物、汚泥、最終処分場に埋め立てた廃棄物を掘り起こ
した廃棄物などを溶融処理する廃棄物溶融炉に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste melting furnace for melting and processing municipal solid waste, industrial waste, sludge, waste obtained by excavating waste landfilled at a final disposal site, and the like.
【０００２】[0002]
【従来の技術】廃棄物には、都市ごみを主体とした一般
廃棄物、各種産業廃棄物、焼却灰、一端埋立処理した後
に再度掘り起こした土砂分を含む埋立ごみ、汚泥等があ
り、これらの廃棄物の処埋方法として、廃棄物を廃棄物
溶融炉で、乾燥、予熱、熱分解、燃焼、溶融し、燃焼残
さをスラグやメタルとして取り出す廃棄物溶融処埋方法
が知られている。2. Description of the Related Art Wastes include general waste mainly composed of municipal waste, various kinds of industrial waste, incinerated ash, landfill waste containing sediment reclaimed after being once landfilled, and sludge. As a waste disposal method, there is known a waste melting and disposal method in which waste is dried, preheated, pyrolyzed, burned, and melted in a waste melting furnace, and combustion residues are removed as slag or metal.
【０００３】図６は、従来の廃棄物溶融炉の概略を示す
縦断面図であり、廃棄物は、シャフト部１の上部より、
シール弁２ａを備えた廃棄物装入装置２の廃棄物投入シ
ュート２ｂより装入され、また、副原料として石灰石や
コークスが装入される。炉下部の羽口３からは、空気あ
るいは酸素と空気を混合した酸素富化空気が吹き込ま
れ、コークスや熱分解によって生じた炭素質を高温炉床
において高温度で燃焼させ、廃棄物を還元燃焼してガス
化させ、一方、燃焼残さは溶融処理してスラグ化すると
ともに、炉内を上昇するガスは排ガスダクト４から排出
され、排ガス処理系で処理される。FIG. 6 is a longitudinal sectional view schematically showing a conventional waste melting furnace.
The waste is charged from the waste charging chute 2b of the waste charging device 2 having the seal valve 2a, and limestone or coke is charged as an auxiliary material. Air or oxygen-enriched air containing a mixture of oxygen and air is blown from the tuyere 3 at the bottom of the furnace to burn coke and carbonaceous materials generated by thermal decomposition at high temperature in a high-temperature hearth, and to reduce and burn waste. On the other hand, the combustion residue is melted and turned into slag, and the gas rising in the furnace is discharged from an exhaust gas duct 4 and processed in an exhaust gas treatment system.
【０００４】[0004]
【発明が解決しようとする課題】従来の廃棄物溶融炉
は、炉下部から酸素源として空気を送風し、生成したガ
スを、炉内のごみ中を均一に上昇させ、炉下部で発生し
た灰やすす類をごみで捕捉して集じんすることを想定し
た構造となっている。In a conventional waste melting furnace, air is blown from the lower part of the furnace as an oxygen source, and the generated gas is uniformly raised in the refuse in the furnace. The structure is designed to capture and collect dust and dirt.
【０００５】しかし、廃棄物溶融炉は各種各様の廃棄物
を処理するため、中には廃棄物と内壁面との間に隙間が
形成し易いものである。上昇する高温ガスが流れやすい
状態になっており、隙間に高温ガスが流れるとごみが加
熱されて縮んで空洞が形成され、さらに高温ガスが流れ
やすくなって空洞が上方へ拡大し、煙突状空洞が発生す
ると、高温ガスがそのまま炉の上部へ達し大量の灰を含
んだガスが排ガスとして廃棄物溶融炉より排出される。However, since the waste melting furnace processes various kinds of waste, a gap is easily formed between the waste and the inner wall surface. The rising high-temperature gas is easy to flow, and when the high-temperature gas flows through the gap, the dust is heated and shrinks to form a cavity, and the high-temperature gas flows more easily, the cavity expands upward, and the chimney-shaped cavity Occurs, the high-temperature gas reaches the upper part of the furnace as it is, and a gas containing a large amount of ash is discharged from the waste melting furnace as exhaust gas.
【０００６】このように、従来の廃棄物溶融炉は、ガス
が炉壁面に沿って不均一に上昇した場合、炉内上部の廃
棄物表面部分では局部的にガスが噴出するため、灰やす
す類をそのまま排ガスダクトへ搬送してしまうものとな
っており、発塵の多い構造となっている。[0006] As described above, in the conventional waste melting furnace, when the gas rises unevenly along the furnace wall, the gas is spouted locally on the waste surface portion at the upper part in the furnace, so that the ash soot is generated. Are transported to the exhaust gas duct as it is, and it has a structure that generates a lot of dust.
【０００７】そこで、本発明は、廃棄物溶融炉内を上昇
するガスの除塵効率を上げて発塵の少ない廃棄物溶融炉
を提供するものである。Accordingly, the present invention is to provide a waste melting furnace which generates less dust by increasing the dust removal efficiency of gas rising in the waste melting furnace.
【０００８】[0008]
【課題を解決するための手段】本発明の廃棄物溶融炉
は、廃棄物を炉頂から装入し、炉下部の羽口から空気又
は酸素を富化した空気を吹き込み、廃棄物を還元燃焼し
てガス化させ、燃焼残さは溶融処理する廃棄物の溶融炉
において、炉内壁の全周に亘り、装入された廃棄物が内
壁部分に侵入するのを阻止して廃棄物の存在しない空洞
部を形成する空洞部形成手段を設け、炉壁に沿って上昇
する発生ガスを前記空洞部を通過せしめた後、再度、廃
棄物層を通過させて炉外へ排出させるようにしたことを
特徴とする。In the waste melting furnace of the present invention, waste is charged from the furnace top, air or oxygen-enriched air is blown from tuyeres at the bottom of the furnace, and the waste is reduced and burned. In a melting furnace for waste that is subjected to melting treatment, the combustion residue is prevented from entering the inner wall of the furnace over the entire circumference of the furnace inner wall, and a cavity free of waste is formed. A cavity forming means for forming a cavity, wherein the generated gas rising along the furnace wall is allowed to pass through the cavity, and then passed again through the waste layer and discharged out of the furnace. And
【０００９】[0009]
【発明の実施の形態】本発明の廃棄物溶融炉は、空洞部
形成手段として、排ガスダクトが接続された、炉頂部内
の廃棄物投入シュートと、炉頂部の天井と、シャフト部
の炉内壁とにより空洞部を形成、あるいは、シャフト部
炉壁の全周に形成した上面が炉内中心に向かって下向き
の傾斜面と、下面が水平面とで形成された凸条、あるい
はシャフト部炉壁の全周に形成した上面が水平面と、下
面が炉内中心に向かって下向きの傾斜面とで形成された
凹溝で構成することができる。また、炉頂部近傍内にあ
って、その板面が炉心に向かって傾斜している傾斜板を
炉内壁の全周に亘り設け、傾斜板の下面部と炉内壁間に
空洞部を形成してもよい。BEST MODE FOR CARRYING OUT THE INVENTION The waste melting furnace of the present invention has a cavity forming means connected to an exhaust gas duct, a waste charging chute in a furnace top, a ceiling at a furnace top, and a furnace inner wall at a shaft portion. A hollow portion is formed by the above, or an upper surface formed on the entire periphery of the shaft portion furnace wall has a downwardly inclined surface toward the center of the furnace, and a convex line formed by a lower surface with a horizontal surface, or a shaft portion furnace wall. An upper surface formed on the entire circumference can be constituted by a concave groove formed by a horizontal surface and a lower surface formed by an inclined surface downward toward the center in the furnace. Further, an inclined plate which is located in the vicinity of the furnace top and whose plate surface is inclined toward the core is provided over the entire periphery of the furnace inner wall, and a cavity is formed between the lower surface of the inclined plate and the furnace inner wall. Is also good.
【００１０】本発明の廃棄物溶融炉は、炉内を上昇する
ガスを一旦空洞部に導き、その後もう一度ごみ中を通過
させることで、ごみとガスを均一に低流速で接触させる
ことで、除塵効率を上げ発塵を少なくすることが可能と
なる。In the waste melting furnace according to the present invention, the gas that rises in the furnace is once guided to the cavity, and then passed through the waste once again, whereby the dust and the gas are uniformly contacted at a low flow rate, thereby removing dust. It is possible to increase efficiency and reduce dust generation.
【００１１】また、シャフト部を高さ方向に数段の凸条
又は凹溝を設けて空洞部を形成することで、空洞部を出
て、再び廃棄物中に入る過程を繰り返すことにより、除
塵効率を上げるとともに、ガスの均一上昇を図ることが
でき、廃棄物溶融炉の安定操業を達成することが可能と
なる。[0011] Further, by forming a hollow portion by providing a plurality of steps of ridges or concave grooves in the height direction of the shaft portion, the process of exiting the hollow portion and reentering the waste is repeated, thereby removing dust. Efficiency can be increased and gas can be evenly increased, and stable operation of the waste melting furnace can be achieved.
【００１２】[0012]
【実施例】実施例１ 図１は本発明の一実施例を示す部分縦断面図である。図
６の従来の廃棄物溶融炉と同一構成には同一符号を付し
その説明は省略する。廃棄物溶融炉は、図６に示す従来
の廃棄物溶融炉と同じく、廃棄物を炉頂から装入し、炉
下部の羽口から空気又は酸素を富化した空気を吹き込
み、廃棄物を還元燃焼してガス化させ、燃焼残さは溶融
処理する。FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention. The same components as those of the conventional waste melting furnace shown in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted. In the waste melting furnace, as in the conventional waste melting furnace shown in FIG. 6, waste is charged from the furnace top, and air or oxygen-enriched air is blown from the tuyere at the bottom of the furnace to reduce the waste. It burns and gasifies, and the combustion residue is melted.
【００１３】本実施例では、空洞部形成手段として、炉
頂部の天井５と廃棄物投入シュート２ｂとシャフト部１
とにより、廃棄物投入シュート２ｂから投入された廃棄
物が内壁部分に侵入するのを阻止して廃棄物の存在しな
い空洞部６が炉内壁の全周に亘り形成される。炉内を上
昇してきたガスを排出するための排ガスダクト４は、廃
棄物投入シュート２ｂの上部に接続する。In this embodiment, as the cavity forming means, the ceiling 5 at the furnace top, the waste charging chute 2b, and the shaft 1
Thus, the waste injected from the waste input chute 2b is prevented from entering the inner wall portion, and a cavity 6 in which no waste is present is formed over the entire circumference of the furnace inner wall. An exhaust gas duct 4 for discharging gas rising in the furnace is connected to an upper portion of the waste input chute 2b.
【００１４】前記構成において、炉下部から上昇してき
たガスは、一旦空洞部６に出て、低流速の均一流になっ
た後、廃棄物投入シュート２ｂの下部の周囲から廃棄物
投入シュート２ｂ内の廃棄物層に入り込んで上昇し、廃
棄物投入シュート２ｂに接続された排ガスダクト４から
排出される。このガスの流れにより、ガス中のダストは
廃棄物投入シュート内の廃棄物に捕捉されて除塵される
ので、炉外へ放出されるダストの搬送量を減らすことが
できる。In the above construction, the gas rising from the lower part of the furnace once exits to the cavity 6 and becomes a uniform flow at a low flow rate, and then from around the lower part of the waste input chute 2b into the waste input chute 2b. Into the waste layer, rises, and is discharged from the exhaust gas duct 4 connected to the waste input chute 2b. Due to this gas flow, dust in the gas is captured by the waste in the waste input chute and is removed, so that the amount of dust discharged outside the furnace can be reduced.
【００１５】実施例２ 図２は本発明の別実施例の概略を示す縦断面図である。
本実施例では、空洞部形成手段として、シャフト部１の
炉頂部近傍の内周壁全周に凸条７を形成する。凸条７の
上面は炉心に向かって下向きの傾斜面に形成して、廃棄
物が下降し易いようにし、一方、下面を水平面に形成
し、下降する廃棄物が入り込まないようにして、空洞部
６を形成する。排ガスダクト４は、従来の廃棄物溶融炉
と同様に炉頂部に接続する。Embodiment 2 FIG. 2 is a longitudinal sectional view schematically showing another embodiment of the present invention.
In this embodiment, as the cavity forming means, a ridge 7 is formed on the entire inner peripheral wall of the shaft 1 near the furnace top. The upper surface of the ridge 7 is formed on the inclined surface facing downward toward the core so that the waste can easily descend, while the lower surface is formed in a horizontal plane so that the descending waste does not enter and the cavity is formed. 6 is formed. The exhaust gas duct 4 is connected to the furnace top like a conventional waste melting furnace.
【００１６】本実施例でも、実施例１と同様に、上昇し
てきたガスは、一旦空洞部６に出て低流速の均一流にな
った後、凸条７の回りの廃棄物層に入り込んで上昇し、
ガス中のダストは廃棄物に捕捉されて除塵されるので、
排ガス中のダストを低減させることができる。In the present embodiment, as in the first embodiment, the gas that has risen once exits the cavity 6 and becomes a uniform flow at a low flow rate, and then enters the waste layer around the ridge 7. Rise,
The dust in the gas is trapped by the waste and removed,
Dust in exhaust gas can be reduced.
【００１７】実施例３ 図３は本発明の別実施例の概略を示す縦断面図である。
本実施例では、空洞部形成手段として、シャフト部１の
炉頂部近傍の内周壁全周に炉心に向かって下向きの傾斜
板８の下部に空洞部６を設け、傾斜板８を下降する廃棄
物が空洞部６に入り込まないようにする。排ガスダクト
４は、従来の廃棄物溶融炉と同様に炉頂部に接続する。Embodiment 3 FIG. 3 is a longitudinal sectional view schematically showing another embodiment of the present invention.
In this embodiment, as the cavity forming means, a cavity 6 is provided at the lower part of the inclined plate 8 facing downward toward the core around the entire inner peripheral wall near the furnace top of the shaft portion 1, and the waste which descends the inclined plate 8 is formed. Does not enter the cavity 6. The exhaust gas duct 4 is connected to the furnace top similarly to the conventional waste melting furnace.
【００１８】本実施例でも、上昇してきたガスは、一旦
傾斜板８の下部に形成された空洞部６に出て低流速の均
一流になった後、傾斜板８の回りの廃棄物層に入り込ん
で上昇してガス中のダストは廃棄物で除塵され、排ガス
中のダストを低減させることができる。Also in the present embodiment, the gas that has risen once goes out into the cavity 6 formed at the lower part of the inclined plate 8 to become a uniform flow with a low flow rate, and then to the waste layer around the inclined plate 8. Dust in the gas that enters and rises is removed by waste, and dust in the exhaust gas can be reduced.
【００１９】実施例４ 図４は本発明の他の実施例を示す縦断面図である。空洞
部形成手段として、シャフト部１の内周壁の全周に凸条
７を高さ方向に数段形成する。凸条７は、実施例２と同
様に、上面は炉心に向かって下向きの傾斜面に形成し
て、廃棄物が下降し易いようにし、一方、下面を水平面
に形成し、下降する廃棄物が入り込まないようにして、
空洞部６を形成する。排ガスダクト４は、従来の廃棄物
溶融炉と同様に炉頂部に接続する。Embodiment 4 FIG. 4 is a longitudinal sectional view showing another embodiment of the present invention. As the cavity forming means, several ridges 7 are formed in the height direction all around the inner peripheral wall of the shaft 1. As in the second embodiment, the ridge 7 has an upper surface formed on an inclined surface facing downward toward the core so that the waste can easily descend, while a lower surface is formed on a horizontal surface and the descending waste can be formed. So that you do n’t get in
A cavity 6 is formed. The exhaust gas duct 4 is connected to the furnace top similarly to the conventional waste melting furnace.
【００２０】本実施例では、上昇してきたガスは、一旦
下段の空洞部６に出た後、再び凸条７の回りの廃棄物層
に入り込んで上昇する。さらに、ガスは、上段の空洞部
６に出た後、再び凸条７の回りの廃棄物層に入り込んで
通過し、排ガスダクト４から排出される。In the present embodiment, the gas that has risen once exits the lower cavity 6 and then again enters the waste layer around the ridge 7 and rises. Further, after exiting the upper cavity 6, the gas again enters the waste layer around the ridge 7, passes therethrough, and is discharged from the exhaust gas duct 4.
【００２１】炉内を上昇するガスは、空洞部６を出て、
再び廃棄物中に入る過程を繰り返すことにより廃棄物中
を均一に上昇させることが可能となる。また、空洞部６
に出たガスを再び廃棄物中を通すため、排ガス中のダス
トが捕捉されて、排ガス中のダストを低減させることも
できる。The gas rising in the furnace exits the cavity 6 and
By repeating the process of entering the waste again, it is possible to raise the waste uniformly. In addition, the cavity 6
Since the gas discharged into the waste gas is passed through the waste again, the dust in the exhaust gas is captured, and the dust in the exhaust gas can be reduced.
【００２２】実施例５ 図５は本発明の別実施例を示す縦断面図である。空洞部
形成手段として、シャフト部１の内周壁全周に複数段の
凹溝９を形成する。凹溝９の上面は水平面に形成し、一
方、下面は炉心方向に下向きの傾斜面に形成し、下降す
る廃棄物が入り込まないようにして、空洞部６を形成す
る。排ガスダクト４は、従来の廃棄物溶融炉と同様に炉
頂部に接続する。Embodiment 5 FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention. As the cavity forming means, a plurality of concave grooves 9 are formed all around the inner peripheral wall of the shaft portion 1. The upper surface of the concave groove 9 is formed in a horizontal plane, while the lower surface is formed in an inclined surface which faces downward in the core direction, so that the descending waste does not enter to form the cavity 6. The exhaust gas duct 4 is connected to the furnace top similarly to the conventional waste melting furnace.
【００２３】本実施例では、上昇してきたガスは、一旦
下段の凹溝９の空洞部６に出て、再び凹溝９の回りの廃
棄物層に入り込んで上昇する。さらに、ガスは、上段の
凹溝９の空洞部６に出て、再び凹溝９の回りの廃棄物層
に入り込んで通過し、排ガスダクト４から排出される。
炉内を上昇するガスは、空洞部６を出て、再び廃棄物中
に入る過程を繰り返すことにより廃棄物中を均一に上昇
させることが可能となる。また、空洞部６に出たガスを
再び廃棄物中を通すため、排ガス中のダストが捕捉され
て、排ガス中のダストを低減させることもできる。In the present embodiment, the gas that has risen once exits into the cavity 6 of the lower groove 9 and again enters the waste layer around the groove 9 and rises. Further, the gas exits into the cavity 6 of the upper groove 9, again enters and passes through the waste layer around the groove 9, and is discharged from the exhaust gas duct 4.
The gas that rises in the furnace exits the cavity 6 and repeats the process of entering the waste again, thereby making it possible to uniformly raise the waste in the waste. In addition, since the gas that has flowed out of the cavity 6 is passed through the waste again, dust in the exhaust gas is captured, and dust in the exhaust gas can be reduced.
【００２４】[0024]
【発明の効果】本発明の廃棄物溶融炉によれば、空洞部
に出たガスを、再度廃棄物中を通過させることにより、
ガス中のダストを捕捉して除じんすることにより、炉外
に排出されるガス中のダストを低減させ、発塵を少なく
することができ、またガスを均一に上昇させることが可
能となる。According to the waste melting furnace of the present invention, the gas discharged from the cavity is passed again through the waste,
By trapping and removing dust in the gas, dust in the gas discharged outside the furnace can be reduced, dust generation can be reduced, and the gas can be uniformly increased.
【００２５】また、空洞部を多段に形成して、空洞部に
出たガスを、再度廃棄物中を通過させる過程を繰り返す
ことにより、ガスを均一に上昇させることが可能とな
る。その結果、不均一流を防止でき、熱効率が向上して
排ガスの熱のごみへの置換効率が上昇して、廃棄物溶融
炉の安定操業が可能となる。Further, by forming the cavity in multiple stages and repeating the process of passing the gas discharged into the cavity through the waste again, the gas can be raised uniformly. As a result, the non-uniform flow can be prevented, the thermal efficiency is improved, the efficiency of replacing the heat of the exhaust gas with the refuse is increased, and the stable operation of the waste melting furnace becomes possible.
【００２６】さらに、不均一流を防止できるので、不均
一流を除去するための炉内撹拌装置などが不要となり、
建設コストを低減させることができる。また、炉上部へ
不均一流による高温ガスが行かないため、炉上部の耐熱
構造を簡略化することができるため、建設コストを低減
させることができ、また、炉の大型化も可能となる。Further, since the non-uniform flow can be prevented, a stirrer in the furnace for removing the non-uniform flow becomes unnecessary.
Construction costs can be reduced. In addition, since high-temperature gas due to non-uniform flow does not flow to the upper part of the furnace, the heat-resistant structure of the upper part of the furnace can be simplified, so that the construction cost can be reduced and the furnace can be made larger.
【００２７】[0027]
【図１】 本発明の一実施例を示す部分縦断面図。FIG. 1 is a partial longitudinal sectional view showing an embodiment of the present invention.
【００２８】[0028]
【図２】 本発明の別実施例の概略を示す縦断面図。FIG. 2 is a longitudinal sectional view schematically showing another embodiment of the present invention.
【００２９】[0029]
【図３】 本発明の別実施例の概略を示す縦断面図。FIG. 3 is a longitudinal sectional view schematically showing another embodiment of the present invention.
【００３０】[0030]
【図４】 本発明の他の実施例を示す縦断面図。FIG. 4 is a longitudinal sectional view showing another embodiment of the present invention.
【００３１】[0031]
【図５】 本発明の別実施例を示す縦断面図。FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.
【００３２】[0032]
【図６】 従来の廃棄物溶融炉の概略を示す縦断面図。FIG. 6 is a longitudinal sectional view schematically showing a conventional waste melting furnace.
【００３３】[0033]
１：シャフト部 ２：廃棄物装入装置 ２ａ：シール弁 ２ｂ：廃棄物投入シュート ３：羽口 ４：排ガスダクト ５：炉頂部の天井 ６：空洞部 ７：凸条 ８：傾斜板 ９：凹溝 1: Shaft part 2: Waste charging device 2a: Seal valve 2b: Waste charging chute 3: Tuyere 4: Exhaust gas duct 5: Furnace top ceiling 6: Cavity 7: Convex 8: Inclined plate 9: Concave groove
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3K061 AA16 AB02 AB03 AC01 AC02 CA08 DA18 DB14 DB16 DB20 3K065 AA16 AB02 AB03 AC01 AC02 FA09 4K045 AA01 BA10 GA15 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K061 AA16 AB02 AB03 AC01 AC02 CA08 DA18 DB14 DB16 DB20 3K065 AA16 AB02 AB03 AC01 AC02 FA09 4K045 AA01 BA10 GA15
Claims (6)
から空気又は酸素を富化した空気を吹き込み、廃棄物を
還元燃焼してガス化させ、燃焼残さは溶融処理する廃棄
物の溶融炉において、 炉内壁の全周に亘り、装入された廃棄物が内壁部分に侵
入するのを阻止して廃棄物の存在しない空洞部を形成す
る空洞部形成手段を設け、炉壁に沿って上昇する発生ガ
スを前記空洞部を通過せしめた後、再度、廃棄物層を通
過させて炉外へ排出させるようにしたことを特徴とする
廃棄物溶融炉。1. Waste is charged from the top of the furnace, air or oxygen-enriched air is blown from a tuyere at the bottom of the furnace, the waste is reduced and burned to gasify, and the combustion residue is melted for disposal. In a furnace for melting a product, a cavity forming means is provided over the entire circumference of the furnace inner wall to prevent the inserted waste from entering the inner wall portion to form a cavity where no waste exists. Waste gas melting furnace, characterized in that the generated gas rising along the path is allowed to pass through the cavity, and then passed again through the waste layer and discharged out of the furnace.
された、炉頂部内の廃棄物投入シュートと、炉頂部の天
井と、シャフト部の炉内壁とにより空洞部を形成したこ
とを特徴とする請求項１記載の廃棄物溶融炉。2. A cavity forming means, wherein a cavity is formed by a waste charging chute in a furnace top, a furnace top ceiling, and a furnace inner wall of a shaft to which an exhaust gas duct is connected. The waste melting furnace according to claim 1.
て下向きの傾斜面に形成するとともに、下面を水平面に
形成した凸条を炉内壁の全周に亘って設け、下面と炉内
壁間に空洞部を形成したことを特徴とする請求項１記載
の廃棄物溶融炉。3. The cavity forming means has an upper surface formed on an inclined surface downward toward the core, a lower surface formed on a horizontal surface, and a ridge formed over the entire circumference of the inner wall of the furnace. 2. The waste melting furnace according to claim 1, wherein a cavity is formed in the furnace.
かって傾斜している傾斜板を炉内壁の全周に亘り設け、
傾斜板の下面と炉内壁との間に空洞部を形成したことを
特徴とする請求項１記載の廃棄物溶融炉。4. A cavity forming means is provided with an inclined plate whose surface is inclined toward the core over the entire circumference of the furnace inner wall,
The waste melting furnace according to claim 1, wherein a cavity is formed between the lower surface of the inclined plate and the inner wall of the furnace.
全周に形成した上面が水平面で、下面が炉心に向かって
下向きの傾斜面で形成された凹溝からなることを特徴と
する請求項１記載の廃棄物溶融炉。5. The cavity forming means is characterized in that an upper surface formed on the entire periphery of the furnace wall of the shaft portion is a horizontal surface, and a lower surface is formed by a concave groove formed by an inclined surface downward toward the core. The waste melting furnace according to claim 1.
形成されていることを特徴とする請求項３、４又は５記
載の廃棄物溶融炉。6. The waste melting furnace according to claim 3, wherein the hollow portion forming means is formed in a plurality of stages in the shaft portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000306724A JP4231197B2 (en) | 2000-10-05 | 2000-10-05 | Waste melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000306724A JP4231197B2 (en) | 2000-10-05 | 2000-10-05 | Waste melting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002115826A true JP2002115826A (en) | 2002-04-19 |
| JP4231197B2 JP4231197B2 (en) | 2009-02-25 |
Family
ID=18787367
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000306724A Expired - Fee Related JP4231197B2 (en) | 2000-10-05 | 2000-10-05 | Waste melting furnace |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011027391A (en) * | 2009-06-29 | 2011-02-10 | Sumitomo Electric Ind Ltd | Method of charging metallic piece to shaft furnace |
| JP2019203617A (en) * | 2018-05-21 | 2019-11-28 | 彌壽弘 増尾 | Small-sized incineration melting furnace |
-
2000
- 2000-10-05 JP JP2000306724A patent/JP4231197B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011027391A (en) * | 2009-06-29 | 2011-02-10 | Sumitomo Electric Ind Ltd | Method of charging metallic piece to shaft furnace |
| JP2019203617A (en) * | 2018-05-21 | 2019-11-28 | 彌壽弘 増尾 | Small-sized incineration melting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4231197B2 (en) | 2009-02-25 |
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