JPH0774690B2 - Method and apparatus for melting incinerated ash - Google Patents
Method and apparatus for melting incinerated ashInfo
- Publication number
- JPH0774690B2 JPH0774690B2 JP1135824A JP13582489A JPH0774690B2 JP H0774690 B2 JPH0774690 B2 JP H0774690B2 JP 1135824 A JP1135824 A JP 1135824A JP 13582489 A JP13582489 A JP 13582489A JP H0774690 B2 JPH0774690 B2 JP H0774690B2
- Authority
- JP
- Japan
- Prior art keywords
- melting
- ash
- furnace
- molten metal
- incinerated ash
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は都市ゴミの焼却灰の溶融方法およびその装置に
関し、さらに詳しくは都市ゴミの焼却灰をプラズマ炉を
用いて溶融処理してスラグ化し、容積を減少して排出処
理する焼却灰の溶融方法およびその装置に関する。Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for melting incinerated ash of municipal waste, and more particularly, to incinerate the incinerated ash of municipal waste using a plasma furnace to form slag. The present invention relates to a method for melting incineration ash and a device for reducing the volume of the discharged ash.
［従来の技術］ 都市ゴミは従来埋立等によって処分されていた。しかし
近年埋立の用地確保が非常に難しくなり、その対策とし
て都市ゴミを焼却炉で焼却してからさらに焼却灰を埋立
処理するような方法が取られるようになってきた。[Prior Art] Municipal waste was conventionally disposed of by landfill. However, in recent years it has become extremely difficult to secure land for landfill, and as a countermeasure against that, a method has been adopted in which municipal waste is incinerated in an incinerator and then incinerated ash is further landfilled.
しかしながら、ゴミを焼却した後においてもゴミの量の
約10％の焼却灰が発生し、灰の埋立処分用の用地を確保
することも困難になってきた。また灰を埋立処分する場
合においては、灰は微粉状で飛散が甚しく、あるいは灰
の中に含まれている重金属類が浸出する問題もあり、ま
た焼却した際の燃焼物による悪臭の発生、その他環境上
の問題も発生していた。However, even after incineration of garbage, about 10% of the amount of incinerated ash is generated, and it has become difficult to secure a site for landfill disposal of ash. When landfilling the ash, the ash is in the form of fine powder and is prone to scattering, or there is the problem that the heavy metals contained in the ash are leached out, and the generation of a bad odor due to the combustion products when incinerated, There were other environmental problems.
そこでゴミの焼却灰をさらに溶融してスラグ化し、埋立
に再して容積の減少を図ると共に微粉状の灰が飛散する
ことや重金属類が浸出することを防止し、あるいは未燃
焼物の分解を行って環境上の保全を一挙に達成する溶融
装置が開発されている。このような都市ゴミの焼却灰溶
融装置としてはアーク炉、またはプラズマ炉を用いる技
術が開発されている（特願昭63−101360、特願昭63−27
3193等）。Therefore, the incinerated ash of garbage is further melted to form slag, which is reused in the landfill to reduce the volume and prevent the scattering of fine powder ash and the leaching of heavy metals, or the decomposition of unburned materials. Melting equipment has been developed that can achieve environmental protection all at once. As an incinerator ash melting apparatus for such municipal waste, a technique using an arc furnace or a plasma furnace has been developed (Japanese Patent Application Nos. 63-101360 and 63-27).
3193 etc.).
このようなプラズマ焼却炉等が焼却処理する焼却灰の中
に金属片が混入している場合がある。焼却灰中に金属片
が混入しているとこれを溶融装置に装入する前に予め除
去しなければならない。その理由は溶融装置内の溶融物
を溜めている容積には限りがあるため金属が溶融して溶
融装置の炉底に溜まると溶融スラグの溜まる量が著しく
少なくなり溶融装置の処理能力が小さくなるからであ
る。このために焼却灰を溶融装置に装入する前に予め金
属片を除去しなければならなかった。In some cases, metal pieces are mixed in the incineration ash that is incinerated by such a plasma incinerator. Any metal fragments in the incineration ash must be removed prior to charging the melting ash. The reason is that the volume of the molten material in the melting device is limited, so when the metal melts and accumulates at the furnace bottom of the melting device, the amount of molten slag that accumulates decreases significantly and the processing capacity of the melting device decreases. Because. For this reason, the metal pieces had to be removed before charging the incineration ash into the melting device.
しかしこのような焼却灰中から金属片を選別することは
技術的にも非常に困難性が大きく、かつ処理工程が一工
程増えるのでコスト的にも問題があり実際には完全な分
離は非常に難しかった。このために、焼却灰溶融装置中
に金属片が入り溶融装置の灰溜りの容積が小さくなり、
長期連続操業が妨げられるという問題があった。However, it is technically very difficult to separate metal pieces from such incinerated ash, and there is also a cost problem because the number of processing steps increases by one, and in practice complete separation is extremely difficult. was difficult. For this reason, a metal piece enters the incineration ash melting device and the volume of the ash pool of the melting device becomes small,
There was a problem that long-term continuous operation was hindered.
［発明が解決しようとする課題］ 本発明の課題は、プラズマを用いた都市ゴミの焼却灰の
溶融に際し、焼却灰中に混入した金属片を予め除去しな
くても、長期連続操業を妨げられないような焼却灰の溶
融方法およびその装置を提供することを目的とするもの
である。[Problems to be Solved by the Invention] An object of the present invention is to prevent long-term continuous operation without melting metal pieces mixed in the incineration ash in advance when melting the incineration ash of municipal waste using plasma. It is an object of the present invention to provide a method for melting incinerated ash and a device therefor that does not exist.
本方法発明は、金属片が混入する都市ゴミを焼却し、こ
の焼却灰を溶融する焼却灰の溶融方法に適用されるもの
で、溶融炉にプラズマトーチを用い、プラズマアークを
停止することなく溶融炉本体を傾転させて溶融物溜りに
滞留した溶融金属を排出しながら操業することを特徴と
する焼却灰の溶融方法である。The present invention is applied to a method for melting incineration ash by incinerating municipal waste mixed with metal pieces and melting this incineration ash, using a plasma torch in the melting furnace and melting without stopping the plasma arc. It is a method for melting incineration ash, which is characterized in that the furnace main body is tilted to operate while discharging molten metal accumulated in a melt pool.
本装置発明は、金属片が混入する都市ゴミを焼却し、こ
の焼却灰を溶融する焼却灰の溶融装置に適用されるもの
で、溶融装置の溶融炉にプラズマトーチを用い、溶融炉
本体を傾転自在に支持する共に、排滓孔より高い位置
に、炉底に溜まる溶融金属を排出する排出孔を設け、該
排出孔に開閉自在なスライディングゲートを設けたこと
を特徴とする焼却灰の溶融装置である。INDUSTRIAL APPLICABILITY The present invention is applied to an incinerator ash melting apparatus that incinerates municipal waste mixed with metal pieces and melts the incinerated ash, and uses a plasma torch in the melting furnace of the melting apparatus to tilt the melting furnace body. Melt of incineration ash, which is supported rotatably and is provided with a discharge hole for discharging molten metal accumulated in the furnace bottom at a position higher than the discharge hole, and a sliding gate that can be opened and closed is provided in the discharge hole. It is a device.
本発明によれば、溶融炉にプラズマトーチを用い、プラ
ズマアークを停止することなく溶融炉本体を傾転させて
溶融物溜りに滞留した溶融金属を排出しながら操業する
ことができる。そのため、焼却灰中に混入した金属片を
あらかじめ処理する必要はなく、また、プラズマアーク
を停止しないので、炉内温度を保持した状態で溶融金属
を排出することができ、このときの炉耐火物の温度変化
を小さく制御できクラック等の耐火物の損傷を防止する
ことが可能となる。従って、金属片の処理費用が節減で
き、炉を休止することなく長期操業すること及び炉寿命
の延長が可能となる。According to the present invention, a plasma torch is used in the melting furnace, and the melting furnace main body can be tilted without stopping the plasma arc to operate while discharging the molten metal accumulated in the molten material pool. Therefore, it is not necessary to treat the metal pieces mixed in the incinerated ash in advance, and since the plasma arc is not stopped, it is possible to discharge the molten metal while maintaining the temperature inside the furnace. The temperature change can be controlled to be small, and damage to the refractory such as cracks can be prevented. Therefore, the processing cost of the metal pieces can be reduced, and the furnace can be operated for a long time without being shut down and the life of the furnace can be extended.
第１図は本発明の方法を好適に実施できる焼却灰の溶融
装置１の一実施例の縦断面図を示したものである。溶融
装置１は炉底２に溶融物すなわち、溶融スラグ４、溶融
金属５を貯留する溶融物溜り３があり、この溶融物溜り
３の上端から溶融スラグ４がオーバーフローするように
連続排滓孔６を備えている。FIG. 1 is a longitudinal sectional view of an embodiment of an apparatus 1 for melting incinerated ash, which can preferably carry out the method of the present invention. The melting apparatus 1 has a molten material pool 3 for storing molten material, that is, molten slag 4 and molten metal 5 in a furnace bottom 2. The continuous slag hole 6 is provided so that the molten slag 4 overflows from the upper end of the molten material pool 3. Is equipped with.
またこの溶融装置１は、プラズマトーチ７を備えてお
り、図示省略した焼却灰供給装置によって連続的に供給
される焼却灰をプラズマ８により溶融する。Further, the melting device 1 is provided with a plasma torch 7, and melts incineration ash continuously supplied by an incineration ash supply device (not shown) with plasma 8.
オーバーフローして排滓孔６から排出された溶融スラグ
４は噴射水ノズル21から噴射された高圧水により水砕化
され、トラフ22を流下して、水槽23内に溜る。搬出装置
24はこれを掻き上げ、容器25内に水砕スラグ26を回収す
る。The molten slag 4 that overflows and is discharged from the slag hole 6 is water-atomized by the high-pressure water sprayed from the spray water nozzle 21, flows down the trough 22, and collects in the water tank 23. Unloading device
24 scrapes this up and collects the granulated slag 26 in the container 25.
連続排滓孔６より高い位置に溶融金属５を排出する排出
孔９を備える。この排出孔９はスライディングゲート10
によって通常は閉止されている。第２図は溶融金属５が
溶融物溜り３に溜まったのでこの溶融装置１を傾転し
て、溶融金属排出孔９から溶融金属５を排出している状
態を示したものである。溶融装置１を傾転してスライデ
ィングゲート10を開けると溶融金属５は重力により溶融
装置１から排出される。A discharge hole 9 for discharging the molten metal 5 is provided at a position higher than the continuous slag hole 6. This discharge hole 9 is a sliding gate 10
Normally closed by. FIG. 2 shows a state in which the molten metal 5 is accumulated in the molten material pool 3 and thus the melting apparatus 1 is tilted to discharge the molten metal 5 from the molten metal discharge hole 9. When the melting device 1 is tilted and the sliding gate 10 is opened, the molten metal 5 is discharged from the melting device 1 by gravity.
溶融金属５がすべて排出されて、次に溶融スラグが排出
され始めたら、直ちにスライディングゲート10を閉止す
る。次いで溶融装置１を逆に傾転して第１図に示す元の
定位置に戻す。この間プラズマアークを停止しなかっ
た。When the molten metal 5 is completely discharged and then the molten slag starts to be discharged, the sliding gate 10 is immediately closed. Next, the melting apparatus 1 is tilted in the opposite direction and returned to the original fixed position shown in FIG. During this time, the plasma arc was not stopped.
以上の作業中も溶融操業を継続することが可能である。
従って本発明によれば、溶融装置に装入する焼却灰の中
から予め金属片を除外することなくそのまま溶融し、炉
内に溶融金属５が溜った時点で溶融装置１を傾転して溶
融金属５を排出し、操業を続ければよいので、溶融装置
の連続安定操業が可能となる。It is possible to continue the melting operation during the above work.
Therefore, according to the present invention, the incineration ash charged into the melting device is melted as it is without excluding the metal pieces in advance, and when the molten metal 5 is accumulated in the furnace, the melting device 1 is tilted and melted. Since it is sufficient to discharge the metal 5 and continue the operation, it is possible to continuously and stably operate the melting apparatus.
［発明の効果］ 本発明によれば焼却灰中に混入した金属片をあらかじめ
処理する等の費用が不要となる。また溶融金属を溶融金
属排出孔から随時排出してプラズマアークを停止するこ
となく操業を続けることができるので焼却灰溶融装置の
長期連続操業が可能となる。[Advantages of the Invention] According to the present invention, there is no need to pre-treat metal pieces mixed in incinerated ash. Further, since the molten metal can be discharged from the molten metal discharge hole at any time to continue the operation without stopping the plasma arc, the incineration ash melting apparatus can be continuously operated for a long period of time.
また、炉壁耐火物の寿命延長にもなり修繕費を削減する
ことができ、炉の稼働率の向上を期待することができ
る。従って、大幅な操業のコストダウンを図ることがで
きる。Further, the life of the furnace refractory can be extended, the repair cost can be reduced, and the improvement of the operation rate of the furnace can be expected. Therefore, it is possible to significantly reduce the cost of operation.
第１図は本発明方法を好適に実施できる一実施例の焼却
灰溶融装置の縦断面図、第２図はこの溶融装置を傾転し
た状態を示す縦断面図である。 １……溶融装置、２……炉底 ３……溶融物溜り、４……溶融スラグ ５……溶融金属、６……排滓孔 ７……プラズマトーチ、８……プラズマ ９……排出孔、10……スライディングゲートFIG. 1 is a vertical cross-sectional view of an incinerator ash melting apparatus according to an embodiment in which the method of the present invention can be suitably implemented, and FIG. 2 is a vertical cross-sectional view showing a state in which the melting apparatus is tilted. 1 ... Melting device, 2 ... Furnace bottom 3 ... Molten material pool, 4 ... Molten slag, 5 ... Molten metal, 6 ... Slag hole, 7 ... Plasma torch, 8 ... Plasma, 9 ... Discharge hole , 10 …… sliding gate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中川 敏彦 東京都千代田区内幸町２丁目２番３号 川 崎製鉄株式会社東京本社内 (72)発明者 山崎 健利 東京都千代田区内幸町１丁目１番３号 東 京電力株式会社内 (56)参考文献 特開 昭55−131614（ＪＰ，Ａ) 特開 昭64−10016（ＪＰ，Ａ) 特公 昭62−24694（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiko Nakagawa 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Co., Ltd. Tokyo headquarters (72) Inventor Taketoshi Yamazaki 1-1-1, Uchisaiwaicho, Chiyoda-ku, Tokyo No. 3 in Tokyo Electric Power Company (56) Reference JP-A-55-131614 (JP, A) JP-A-64-10016 (JP, A) JP-B-62-24694 (JP, B2)
Claims (2)
焼却灰を溶融する焼却灰の溶融方法において、溶融炉に
プラズマトーチを用い、プラズマアークを停止すること
なく溶融炉本体を傾転させて溶融物溜りに滞留した溶融
金属を排出しながら操業することを特徴とする焼却灰の
溶融方法。1. A method for melting incineration ash, comprising incinerating municipal waste mixed with metal pieces and melting the incineration ash, wherein a plasma torch is used in the melting furnace, and the melting furnace main body is tilted without stopping the plasma arc. A method for melting incinerated ash, which comprises operating while discharging molten metal accumulated in a melt pool.
焼却灰を溶融する焼却灰の溶融装置において、溶融装置
の溶融炉にプラズマトーチを用い、溶融炉本体を傾転自
在に支持する共に、排滓孔より高い位置に、炉底に溜ま
る溶融金属を排出する排出孔を設け、該排出孔に開閉自
在なスライディングゲートを設けたことを特徴とする焼
却灰の溶融装置。2. An incinerator ash melting apparatus for incinerating city refuse mixed with metal pieces and melting the incinerated ash, wherein a plasma torch is used in a melting furnace of the melting apparatus, and the melting furnace main body is tiltably supported. A melting device for incinerator ash, characterized in that a discharge hole for discharging molten metal accumulated on the furnace bottom is provided at a position higher than the slag hole, and a sliding gate that can be opened and closed is provided in the discharge hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135824A JPH0774690B2 (en) | 1989-05-31 | 1989-05-31 | Method and apparatus for melting incinerated ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135824A JPH0774690B2 (en) | 1989-05-31 | 1989-05-31 | Method and apparatus for melting incinerated ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH035615A JPH035615A (en) | 1991-01-11 |
| JPH0774690B2 true JPH0774690B2 (en) | 1995-08-09 |
Family
ID=15160652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1135824A Expired - Lifetime JPH0774690B2 (en) | 1989-05-31 | 1989-05-31 | Method and apparatus for melting incinerated ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0774690B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675910A (en) * | 2019-01-17 | 2019-04-26 | 北京工大环能科技有限公司 | A kind of processing method for heavy metals such as dioxin in flying dust and mercury |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4886293B2 (en) * | 2005-12-26 | 2012-02-29 | 株式会社ブイエスディー | Humidification incineration ash melting furnace |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH640336A5 (en) * | 1979-03-29 | 1983-12-30 | Von Roll Ag | Method for the melting of slag from an incineration plant, in particular a refuse incineration plant, with grate firing and melt chamber firing for carrying out the method |
| JPH0714108B2 (en) * | 1985-07-25 | 1995-02-15 | 株式会社日立製作所 | Multilayer wiring board and manufacturing method thereof |
-
1989
- 1989-05-31 JP JP1135824A patent/JPH0774690B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675910A (en) * | 2019-01-17 | 2019-04-26 | 北京工大环能科技有限公司 | A kind of processing method for heavy metals such as dioxin in flying dust and mercury |
| CN109675910B (en) * | 2019-01-17 | 2021-01-05 | 北京工大环能科技有限公司 | Treatment method for heavy metals such as dioxin, mercury and the like in fly ash |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH035615A (en) | 1991-01-11 |
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