JPH1073233A - Molten slug water-cooling device for combustion melting furnace - Google Patents

Molten slug water-cooling device for combustion melting furnace

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Publication number
JPH1073233A
JPH1073233A JP23000096A JP23000096A JPH1073233A JP H1073233 A JPH1073233 A JP H1073233A JP 23000096 A JP23000096 A JP 23000096A JP 23000096 A JP23000096 A JP 23000096A JP H1073233 A JPH1073233 A JP H1073233A
Authority
JP
Japan
Prior art keywords
water
molten slag
temperature
melting furnace
water cooling
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Withdrawn
Application number
JP23000096A
Other languages
Japanese (ja)
Inventor
Toshimi Tsukada
俊美 塚田
Hiroyuki Fujio
弘幸 藤尾
Takeo Shimizu
武夫 清水
Hidehiro Kiuchi
英洋 木内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP23000096A priority Critical patent/JPH1073233A/en
Publication of JPH1073233A publication Critical patent/JPH1073233A/en
Withdrawn legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To stably and easily treat molten slug to produce solid slug being even in a gain and having a desired grain size. SOLUTION: A molten slug water-cooling device 2 is arranged at the molten slug discharge port of a combustion melting furnace to burn a combustible substance at temperature, at which an ash content is molten, to produce molten slug (f), and the molten slug (f) is water-cooled to produce solid slug. In this case, a water temperature control means 5 is provided to control the temperature of water (h) used for water-cooling to a value at which the grain size of the solid slug generated through water-cooling is adjusted to a desired size. Further, the water temperature control means 5 comprises a cooling tower 6 to cool the water (h) used for water-cooling; a circulation pump 7 to circulate the water (h) in a water tank 3 through the cooling tower and return the water to the water tank; and a temperature controller 11 to detect the temperature of the water (h) in the water tank 3 and transmit drive and stop signals to the circulation pump 7.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、可燃物を燃焼させ
生じた灰分、特に廃棄物(家庭やオフィスなどから出さ
れる都市ごみ等の一般廃棄物、廃プラスチック、カーシ
ュレッダー・ダスト、廃オフィス機器、電子機器、化成
品等の産業廃棄物など、可燃物を含むもの)を熱分解し
て得られた熱分解ガスと燃焼性成分とを燃焼用空気と共
に燃焼させ生じた灰分を溶融スラグにし、更に水で冷却
して固形スラグにする燃焼溶融炉の溶融スラグ水冷装置
及びこれを備えた廃棄物処理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 ash produced by burning combustibles, especially waste (general waste such as municipal waste from homes and offices, waste plastic, car shredder dust, waste office equipment). , Electronic equipment, industrial wastes such as chemical products, etc., including combustibles) by pyrolysis of the pyrolysis gas and the combustible components obtained by pyrolysis together with combustion air into molten slag, Further, the present invention relates to a molten slag water cooling device of a combustion melting furnace which is cooled by water to form a solid slag, and a waste treatment device provided with the device.

【0002】[0002]

【従来の技術】従来、灰分等の細粒不燃分を含む可燃物
を燃焼させて生じた灰分を溶融して溶融スラグとし、更
に水で冷却して固形スラグにする燃焼溶融炉の溶融スラ
グ水冷装置としては、例えば、特公平6−56253号
公報に記載されたものが知られている。これは先ず、都
市ごみ等の一般廃棄物や廃プラスチックなどの可燃物を
含む廃棄物を熱分解反応器に入れて低酸素雰囲気中で熱
分解し、熱分解ガスと主として不揮発性成分からなる熱
分解残留物とを生成し、分離する。更に、分離装置によ
って熱分解残留物を燃焼性成分と不燃焼性成分とに分離
し、この時生じた燃焼性成分と先の熱分解ガスとを燃焼
溶融炉によって燃焼させ、生じた灰分を溶融して溶融ス
ラグとし、燃焼溶融炉の排出口から落下するこの溶融ス
ラグを水槽に導いて水で急冷するものである。そして、
生成された固形スラグは、道路舗装や建造物の骨材等へ
の再利用が考えられていることから、出来るだけ粒径が
揃った固形スラグが望まれる。
2. Description of the Related Art Conventionally, molten slag water cooling in a combustion melting furnace is performed in which ash produced by burning combustibles containing fine incombustibles such as ash is melted to form molten slag, and further cooled with water to form solid slag. As an apparatus, for example, an apparatus described in Japanese Patent Publication No. 6-56253 is known. First, waste containing general waste such as municipal solid waste and combustibles such as waste plastics is put into a pyrolysis reactor and pyrolyzed in a low oxygen atmosphere. Form and separate from decomposition residues. Furthermore, the pyrolysis residue is separated into a combustible component and a non-combustible component by a separator, and the combustible component generated at this time and the pyrolysis gas are burned by a combustion melting furnace, and the generated ash is melted. Then, the molten slag which falls from the discharge port of the combustion melting furnace is guided to a water tank and rapidly cooled with water. And
Since the generated solid slag is considered to be reused for road pavement and aggregates of buildings, solid slag having a uniform particle size as much as possible is desired.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記従
来の燃焼溶融炉の溶融スラグ水冷装置は、約1300℃
の高温の溶融スラグを水槽の水にいきなり入れて急冷さ
せていたので、スラグの塊が熱収縮を受けて細かく割
れ、粒径の揃わないものが生成されてしまう。
However, the above-mentioned conventional molten slag water cooling system for a combustion melting furnace has a temperature of about 1300 ° C.
Since the high-temperature molten slag is rapidly cooled by suddenly putting it into the water of the water tank, the slag mass undergoes thermal shrinkage, and is finely cracked, resulting in the generation of particles having an irregular particle size.

【0004】その上、溶融スラグの元の廃棄物は、種々
雑多のもの、例えば家庭やオフィスなどから出る生ご
み、紙類、廃プラスチック、カーシュレッダー・ダスト
等の可燃物や、廃オフィス機器、電子機器や建設資材等
から出る金属や陶器、砂利及びコンクリート片等の不燃
物があり、これらを熱分解することにより生成される熱
分解ガス及び燃焼性成分の質と量は変動するので、燃焼
溶融炉から排出される溶融スラグの量も変動する。従っ
て、燃焼溶融炉の排出口から落下する高温の溶融スラグ
の量も変動し、これによって水槽の水の温度も変動す
る。更に季節によっても水温は変動するので、所望の粒
径の固形スラグを常に安定して得ることが難しい。
[0004] In addition, the original waste of molten slag is a variety of things, such as combustibles such as garbage, paper, waste plastic, car shredder dust, etc., from households and offices, waste office equipment, and the like. There are incombustible substances such as metals, pottery, gravel and concrete chips from electronic devices and construction materials.The quality and quantity of pyrolysis gas and combustible components generated by pyrolyzing these fluctuate. The amount of molten slag discharged from the melting furnace also varies. Accordingly, the amount of the hot molten slag that falls from the outlet of the combustion melting furnace also fluctuates, and accordingly, the temperature of the water in the water tank also fluctuates. Further, since the water temperature varies depending on the season, it is difficult to always obtain a solid slag having a desired particle size stably.

【0005】本発明の目的は、灰分等の細粒不燃分を含
む可燃物を燃焼させ、生じた灰分を溶融スラグとして排
出し、水で冷却して固形スラグにする際に、溶融スラグ
を安定して容易に粒の揃った所望の粒径の固形スラグに
することが出来る燃焼溶融炉の溶融スラグ水冷装置及び
これを備えた廃棄物処理装置を提供することである。
An object of the present invention is to stabilize molten slag when burning combustibles containing fine incombustibles such as ash, discharging the generated ash as molten slag, and cooling it with water to form solid slag. It is an object of the present invention to provide a molten slag water cooling device of a combustion melting furnace and a waste treatment device provided with the same, which can easily produce solid slag having a desired particle size with uniform grains.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
本発明は、灰分を溶融させる温度で可燃物を燃焼させて
生じた溶融スラグを排出する燃焼溶融炉の前記溶融スラ
グ排出口に設けられ、前記溶融スラグを水冷して固形ス
ラグにする溶融スラグ水冷装置において、水冷に用いる
水の温度を制御する水温制御手段を備えたことである。
水冷に用いる水の温度を制御する水温制御手段を備えた
ことにより、設定された一定の水温の水で溶融スラグを
冷やすので、生成される固形スラグの粒径は均一とな
る。
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is provided at the molten slag discharge port of a combustion and melting furnace for discharging molten slag generated by burning combustibles at a temperature at which ash is melted. Further, in the molten slag water cooling apparatus for cooling the molten slag into water by solid cooling, a water temperature control means for controlling a temperature of water used for water cooling is provided.
By providing the water temperature control means for controlling the temperature of the water used for water cooling, the molten slag is cooled with the water having the set constant water temperature, so that the particle size of the solid slag generated is uniform.

【0007】更に上記燃焼溶融炉の溶融スラグ水冷装置
において、前記水温制御手段は、前記水冷に用いる水の
温度を水冷により生成される固形スラグの粒径を所望の
大きさになるように制御するものである。水冷に用いる
水の温度を水冷により生成される固形スラグの粒径を所
望の大きさになるように制御する水温制御手段により、
上記燃焼溶融炉の溶融スラグ水冷装置の作用に加え、制
御が比較的容易な水温を制御して、生成される固形スラ
グの粒径を所望の大きさにし、固形スラグの使用目的に
合った粒径を得ることが出来る。
Further, in the molten slag water cooling device of the combustion melting furnace, the water temperature control means controls the temperature of the water used for the water cooling so that the particle size of the solid slag generated by the water cooling becomes a desired size. Things. By water temperature control means for controlling the temperature of the water used for water cooling so that the particle size of the solid slag generated by water cooling becomes a desired size,
In addition to the operation of the molten slag water cooling device of the combustion melting furnace, the water temperature is relatively easily controlled to control the particle size of the generated solid slag to a desired size. The diameter can be obtained.

【0008】そして、上記いずれかの燃焼溶融炉の溶融
スラグ水冷装置において、前記水温制御手段は、前記溶
融スラグが落下する水槽に設けられ前記水冷に用いる水
を冷却する冷却器と、前記水槽内の水を前記冷却器を循
環させて戻す循環ポンプと、前記水槽の水の温度を検知
し、前記循環ポンプに駆動、停止信号を発信する温度コ
ントローラーとを有するものである。
[0008] In any one of the above-mentioned devices for cooling the molten slag of the combustion melting furnace, the water temperature control means is provided in a water tank in which the molten slag falls, and cools water used for the water cooling. And a temperature controller that detects the temperature of the water in the water tank and sends a drive and stop signal to the circulating pump.

【0009】このような構成を有する溶融スラグ水冷装
置は、上記いずれかの燃焼溶融炉の溶融スラグ水冷装置
の作用を有すると共に、水槽内の水が落下する溶融スラ
グを冷却する間に昇温し、予め決められた上限温度に達
した時に、温度コントローラーがこの上限温度を検知し
循環ポンプに駆動信号を発信する。この信号を受けて循
環ポンプは水槽内の水を冷却器に送る。冷却器は水槽か
ら送られた水を冷却する。更に、冷却された水は、循環
ポンプによって水槽に戻される。水槽の水が予め決めら
れた下限温度に達した時に、温度コントローラーがこの
下限温度を検知し循環ポンプに停止信号を発信し、循環
ポンプは停止する。このように、簡便な制御機器により
確実に水槽の水温を制御出来る。
The molten slag water cooling device having such a structure has the function of the molten slag water cooling device of any of the above-mentioned combustion melting furnaces, and increases the temperature while cooling the molten slag in which water in the water tank falls. When the temperature reaches a predetermined upper limit temperature, the temperature controller detects the upper limit temperature and sends a drive signal to the circulation pump. Upon receiving this signal, the circulation pump sends the water in the water tank to the cooler. The cooler cools the water sent from the water tank. Further, the cooled water is returned to the water tank by the circulation pump. When the water in the water tank reaches a predetermined lower limit temperature, the temperature controller detects the lower limit temperature and sends a stop signal to the circulation pump, and the circulation pump stops. Thus, the water temperature of the water tank can be reliably controlled by the simple control device.

【0010】又、投入された廃棄物を熱分解し、熱分解
ガスと主として不揮発性成分からなる熱分解残留物とを
生成する熱分解反応器と、該熱分解反応器で生成された
熱分解ガスと熱分解残留物とを分離して排出する排出装
置と、該排出装置から排出される前記熱分解残留物を燃
焼性成分と不燃焼性成分とに分離する分離装置と、前記
熱分解ガスと前記燃焼性成分とを燃焼用空気と共に燃焼
させ、生じた灰分を溶融する燃焼溶融炉と、該燃焼溶融
炉で溶融した溶融スラグを水冷しスラグ化する溶融スラ
グ水冷装置とを有する廃棄物処理装置において、前記溶
融スラグ水冷装置は、上記いずれかに記載の燃焼溶融炉
の溶融スラグ水冷装置を備えたことである。
[0010] Further, a pyrolysis reactor for pyrolyzing the input waste to generate a pyrolysis gas and a pyrolysis residue mainly composed of a non-volatile component, and a pyrolysis reactor generated by the pyrolysis reactor. A discharge device for separating and discharging a gas and a pyrolysis residue, a separation device for separating the pyrolysis residue discharged from the discharge device into a combustible component and a non-combustible component, and the pyrolysis gas And a combustible component, which burns the combustible component together with combustion air to melt the generated ash, and a molten slag water cooling device for water-cooling the molten slag melted in the combustion melting furnace to form a slag. In the apparatus, the molten slag water cooling device includes the molten slag water cooling device of the combustion melting furnace according to any one of the above.

【0011】上記いずれかに記載の燃焼溶融炉の溶融ス
ラグ水冷装置を備えた廃棄物処理装置は、処理効率が向
上する。
The waste treatment apparatus provided with the molten slag water cooling device for a combustion melting furnace according to any one of the above-described embodiments improves the treatment efficiency.

【0012】[0012]

【発明の実施の形態】以下、本発明に係る燃焼溶融炉の
溶融スラグ水冷装置及びこれを備えた廃棄物処理装置の
実施の形態を図面に基づいて説明する。尚、以下の図
1、2において、同じ構造、作用部分には同じ参照番号
を付けて示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a molten slag water cooling device for a combustion melting furnace according to the present invention and a waste treatment device provided with the same will be described below with reference to the drawings. In FIGS. 1 and 2 below, the same structures and working parts are denoted by the same reference numerals.

【0013】図2は、本発明に係る溶融スラグ水冷装置
を備えた廃棄物処理装置の一実施の形態を示す系統図で
ある。本実施の形態の廃棄物処理装置1において、都市
ごみ等の廃棄物aは、例えば二軸剪断式等の破砕機で、
150mm角以下に破砕され、コンベア等により投入部
14に投入される。投入部14に投入された廃棄物aは
スクリューフィーダ15を経て熱分解反応器16に供給
される。廃棄物aは熱分解反応器16内で、熱分解残留
物等を燃焼させ溶融させる燃焼溶融炉24の後流に配置
された図示していない熱交換器により加熱され加熱空気
ラインL1を介して供給される加熱空気g(熱媒体)に
より300〜600℃に、通常は450℃程度に加熱さ
れる。熱分解反応器16の内部は、大気圧より低く維持
され、低酸素雰囲気にコントロールされている。
FIG. 2 is a system diagram showing an embodiment of a waste treatment apparatus provided with a molten slag water cooling device according to the present invention. In the waste treatment apparatus 1 of the present embodiment, the waste a such as municipal waste is, for example, a crusher such as a twin-screw type,
It is crushed to 150 mm square or less, and charged into the charging section 14 by a conveyor or the like. The waste a charged into the charging section 14 is supplied to the pyrolysis reactor 16 via the screw feeder 15. Waste a is in the pyrolysis reactor 16 is heated by a heat exchanger (not shown) disposed on the downstream of the combustion melting furnace 24 for melting to burn pyrolysis residue such as via a heated air line L 1 Is heated to 300 to 600 ° C., usually to about 450 ° C. by the heated air g (heat medium) supplied. The inside of the thermal decomposition reactor 16 is maintained at a pressure lower than the atmospheric pressure and is controlled to a low oxygen atmosphere.

【0014】更に、加熱空気gにより加熱された廃棄物
aは、熱分解して熱分解ガスG1と、主として不揮発性
成分からなる熱分解残留物bとになり、排出装置17に
送られて分離される。排出装置17で分離された熱分解
ガスG1は、排出装置17の上部から熱分解ガスライン
2を経て燃焼溶融炉のバーナ25に供給される。排出
装置17の下部から排出される熱分解残留物bは、45
0℃程度の比較的高温であるため、冷却装置19により
80℃程度に冷却される。
Further, the waste a heated by the heated air g is thermally decomposed into a pyrolysis gas G 1 and a pyrolysis residue b mainly composed of a non-volatile component. Separated. The pyrolysis gas G 1 separated by the discharge device 17 is supplied from above the discharge device 17 to the burner 25 of the combustion melting furnace via the pyrolysis gas line L 2 . The pyrolysis residue b discharged from the lower part of the discharge device 17 is 45
Since the temperature is relatively high at about 0 ° C., it is cooled to about 80 ° C. by the cooling device 19.

【0015】更に、熱分解残留物bは、例えば磁選式、
うず電流式、遠心式又は風力選別式等の公知の単独又は
組み合わされた分離装置20に供給され、ここで灰分等
の細粒不燃分を含む燃焼性成分cと不燃焼性成分dとに
分離され、不燃焼性成分dはコンテナ21に回収され再
利用される。灰分等の細粒不燃分を含む燃焼性成分c
は、粉砕機22により、例えば1mm以下に微粉砕さ
れ、燃焼性成分ラインL3を経て燃焼溶融炉のバーナ2
5に供給され、熱分解ガスラインL2から供給された熱
分解ガスG1と押込送風機26により燃焼用空気ライン
4を介して供給された燃焼用空気eと共に1,300℃
程度の高温域で燃焼され、このとき発生した灰分は溶融
スラグfとなって、この燃焼溶融炉24の内壁に付着
し、更に、内壁を流下し底部排出口27から排出通路2
9を介して溶融スラグ水冷装置2の水槽3に落下し冷却
固化される。
Further, the pyrolysis residue b is, for example, a magnetic separation type,
It is supplied to a known single or combined separation device 20, such as an eddy current type, a centrifugal type or a wind separation type, where it is separated into a combustible component c containing fine incombustible components such as ash and a non-combustible component d. Then, the non-combustible component d is collected in the container 21 and reused. Combustible component c containing fine incombustibles such as ash
Is by a pulverizer 22, for example, 1mm milled below, the burner of the combustion melting furnace through a combustible component line L 3 2
5 is supplied to, 1,300 ° C. with combustion air e supplied through the combustion air line L 4 by thermal decomposition gas G 1 and the forced draft fan 26 which is supplied from the pyrolysis gas line L 2
The ash generated at this time becomes molten slag f, adheres to the inner wall of the combustion melting furnace 24, further flows down the inner wall, and flows from the bottom discharge port 27 to the discharge passage 2.
The molten slag is dropped into the water tank 3 of the water cooling device 2 through the slag 9 to be cooled and solidified.

【0016】燃焼溶融炉24で生じた高温排ガスG
2は、高温空気加熱器28を経由し煙道ガスラインL5
介して排ガスボイラ30で熱回収され集塵器33で除塵
され、更に排ガス浄化器34で有害成分が除去された
後、低温のクリーンな排ガスG3となって誘引送風機3
5を介して煙突36から大気へ放出される。低温のクリ
ーンな排ガスG3の一部は、排ガス循環ラインL6を介し
て冷却装置19に戻される。排ガスボイラ30で生成し
た蒸気は、蒸気タービンを有する発電機31で発電に利
用される。
High-temperature exhaust gas G generated in the combustion melting furnace 24
2 is dust in the heat recovered precipitator 33 at the exhaust gas boiler 30 via a flue gas line L 5 through the hot air heater 28, after the harmful components are removed further in the exhaust gas purifier 34, a low temperature attract blower 3 is a clean exhaust gas G 3 of
5 through the chimney 36 to the atmosphere. Some of the cold clean gas G 3 are, is returned to the cooler 19 through the exhaust gas circulation line L 6. The steam generated by the exhaust gas boiler 30 is used for power generation by a generator 31 having a steam turbine.

【0017】図1は、上記廃棄物処理装置1に備えられ
た溶融スラグ水冷装置の一実施の形態を示す縦断面図で
ある。本実施の形態の溶融スラグ水冷装置2は、先に説
明した灰分を溶融して燃焼溶融炉の排出口から排出通路
29を介して落下する溶融スラグfを水冷し固形スラグ
にするもので、冷却に用いる水hを保持する水槽3と、
生成した固形スラグを搬送するコンベア4と、水冷に用
いる水hの温度を制御する水温制御手段5を備えてい
る。
FIG. 1 is a longitudinal sectional view showing an embodiment of a molten slag water cooling device provided in the waste treatment device 1. The molten slag water cooling device 2 of the present embodiment melts the ash described above and water-cools the molten slag f that falls from the discharge port of the combustion melting furnace through the discharge passage 29 to solid slag. A water tank 3 for holding water h used for
A conveyor 4 for conveying the produced solid slag and a water temperature control means 5 for controlling the temperature of water h used for water cooling are provided.

【0018】コンベア4は、固形スラグを受けて略水平
方向に搬送する水平部分4aと、固形スラグを水中から
搬出する傾斜部分4bとを有し、傾斜部分4bによって
搬送された固形スラグは、矢印4cの方向へ搬出され
る。
The conveyor 4 has a horizontal portion 4a for receiving the solid slag and transporting the solid slag in a substantially horizontal direction, and an inclined portion 4b for carrying the solid slag out of the water. The solid slag transported by the inclined portion 4b is indicated by an arrow. It is carried out in the direction of 4c.

【0019】水温制御手段5は、水冷に用いる水hの温
度を、水冷により生成される固形スラグの粒径を所望の
大きさになるように、制御するもので、水槽3に設けら
れ水hを冷却する冷却器、例えば水をスプレーして蒸発
潜熱によって水自体を冷却する冷却塔6と、水槽3内の
水を冷却塔6を循環させて戻す循環ポンプ7と、水槽3
の水の温度を検知し、循環ポンプ7に駆動、停止信号1
2を発信する温度コントローラー11とを有する。冷却
器が冷却塔6の場合には、構造上冷却塔6の入口側に供
給用の循環ポンプと、冷却塔6の出口側に戻し用の循環
ポンプとを設ける。
The water temperature control means 5 controls the temperature of the water h used for water cooling so that the particle size of the solid slag generated by the water cooling becomes a desired size. A cooling tower for cooling the water itself by spraying water to cool the water itself by latent heat of evaporation, a circulation pump 7 for circulating the water in the water tank 3 through the cooling tower 6, and a water tank 3
The temperature of the water in the circulating pump 7 and the stop signal 1
And a temperature controller 11 for transmitting the second signal. When the cooler is the cooling tower 6, a circulation pump for supply is provided on the inlet side of the cooling tower 6, and a circulation pump for return is provided on the outlet side of the cooling tower 6.

【0020】以上の構成を有する溶融スラグ水冷装置2
は、次のように作用する。即ち、水冷に用いる水hの温
度を、水冷により生成される固形スラグの粒径を所望の
大きさになるように、制御する水温制御手段5により、
設定された一定の水温の水hで溶融スラグfを冷やすこ
とが出来、生成される固形スラグの粒径は均一となる。
これは、溶融スラグfから固形スラグに固化される際
に、固形スラグの粒径が水温によって左右されるためで
ある。溶融スラグfは、約1300℃で水槽3に落ち
る。この時、水温が高く、例えば100℃に近い水温で
冷却されると、粒径が大きくなり易く、例えば細いひも
状になる。水温が低く、例えば0℃に近い水温で冷却さ
れると、はじけるように細かく割れて固化し、粒径が小
さくなり易い。
The molten slag water cooling device 2 having the above configuration
Works as follows. That is, the water temperature control means 5 controls the temperature of the water h used for water cooling so that the particle size of the solid slag generated by the water cooling becomes a desired size.
The molten slag f can be cooled with the water h at a set constant water temperature, and the particle size of the generated solid slag becomes uniform.
This is because the particle size of the solid slag depends on the water temperature when the molten slag f is solidified into the solid slag. The molten slag f falls into the water tank 3 at about 1300 ° C. At this time, when the water temperature is high, for example, when cooled at a water temperature close to 100 ° C., the particle diameter tends to be large, for example, a thin string shape. When the water temperature is low, for example, when it is cooled at a water temperature close to 0 ° C., it is easily broken and solidified, and the particle size tends to be reduced.

【0021】更に、溶融スラグ水冷装置2は、溶融スラ
グfを冷却する間に水槽内の水の温度が昇温し、予め決
められた上限温度に達した時、例えば62℃になった時
に温度コントローラー11が水温を検知し循環ポンプ7
に駆動信号を発信する。この信号を受けて循環ポンプ7
は水槽3内の水を冷却塔6に送る。冷却塔6は水槽3か
ら送られた水を冷却する。更に、冷却された水は、循環
ポンプ7によって水槽3に戻される。水槽3の水が予め
決められた下限温度に達した時、例えば58℃になった
時に、温度コントローラー11が水温を検知し循環ポン
プ7に停止信号を発信し、循環ポンプ7は停止される。
このように、簡便な制御機器により確実に水槽内の水温
が制御される。ここで、予め決められた上限温度及び予
め決められた下限温度は、所望の粒径が得られるように
予め試運転或いは予備試験等により決められる。
Further, the molten slag water cooling device 2 is used to cool the molten slag f when the temperature of the water in the water tank rises while cooling the molten slag f and reaches a predetermined upper limit temperature, for example, 62 ° C. Controller 11 detects water temperature and circulates pump 7
Send the drive signal to In response to this signal, the circulation pump 7
Sends the water in the water tank 3 to the cooling tower 6. The cooling tower 6 cools the water sent from the water tank 3. Further, the cooled water is returned to the water tank 3 by the circulation pump 7. When the temperature of the water in the water tank 3 reaches a predetermined lower limit temperature, for example, when the temperature reaches 58 ° C., the temperature controller 11 detects the water temperature and sends a stop signal to the circulation pump 7 to stop the circulation pump 7.
Thus, the temperature of the water in the water tank is reliably controlled by the simple control device. Here, the predetermined upper limit temperature and the predetermined lower limit temperature are determined in advance by a trial run or a preliminary test so as to obtain a desired particle size.

【0022】本実施の形態の溶融スラグ水冷装置2は、
制御が比較的容易な水温を制御して、生成される固形ス
ラグの粒径を所望の大きさにし、固形スラグの使用目的
に合った粒径を得ることが出来る。又、上記燃焼溶融炉
の溶融スラグ水冷装置2を備えた廃棄物処理装置1は、
処理効率が向上する。
The molten slag water cooling device 2 of the present embodiment
By controlling the water temperature, which is relatively easy to control, the particle size of the produced solid slag can be made a desired size, and a particle size suitable for the intended use of the solid slag can be obtained. In addition, the waste treatment apparatus 1 provided with the molten slag water cooling device 2 of the combustion melting furnace,
Processing efficiency is improved.

【0023】[0023]

【発明の効果】本発明の燃焼溶融炉の溶融スラグ水冷装
置によれば、溶融スラグを安定して容易に粒の揃った所
望の粒径の固形スラグにすることが出来る。
According to the molten slag water cooling system for a combustion and melting furnace of the present invention, the molten slag can be easily and stably converted into solid slag having a desired particle size with uniform grains.

【0024】又、本発明の廃棄物処理装置によれば、上
記燃焼溶融炉の溶融スラグ水冷装置を備えることによ
り、処理効率が向上する。
Further, according to the waste treatment apparatus of the present invention, the treatment efficiency is improved by providing the molten slag water cooling apparatus of the combustion melting furnace.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る燃焼溶融炉の溶融スラグ水冷装置
の一実施の形態を示す縦断面図である。
FIG. 1 is a longitudinal sectional view showing an embodiment of a molten slag water cooling device for a combustion melting furnace according to the present invention.

【図2】図1に示した燃焼溶融炉の溶融スラグ水冷装置
を備えた廃棄物処理装置の一実施の形態を示す系統図で
ある。
FIG. 2 is a system diagram showing an embodiment of a waste treatment apparatus provided with a molten slag water cooling device of the combustion melting furnace shown in FIG.

【符号の説明】[Explanation of symbols]

1 廃棄物処理装置 2 溶融スラグ水冷装置 3 水槽 5 水温制御手段 6 冷却塔(冷却器) 7 循環ポンプ 11 温度コントローラー 16 熱分解反応器 17 排出装置 20 分離装置 24 燃焼溶融炉 27 排出口 G1 熱分解ガス a 廃棄物 b 熱分解残留物 c 燃焼性成分 d 不燃焼性成分 e 燃焼用空気 f 溶融スラグ h 水冷に用いる水DESCRIPTION OF SYMBOLS 1 Waste treatment apparatus 2 Molten slag water cooling apparatus 3 Water tank 5 Water temperature control means 6 Cooling tower (cooler) 7 Circulation pump 11 Temperature controller 16 Pyrolysis reactor 17 Discharge apparatus 20 Separation apparatus 24 Combustion melting furnace 27 Discharge port G 1 heat Cracked gas a Waste b Pyrolysis residue c Flammable component d Non-flammable component e Combustion air f Molten slag h Water used for water cooling

───────────────────────────────────────────────────── フロントページの続き (72)発明者 木内 英洋 岡山県玉野市玉3丁目1番1号 三井造船 株式会社玉野事業所内 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hidehiro Kiuchi 3-1-1, Tamano, Tamano-shi, Okayama Mitsui Engineering & Shipbuilding Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 灰分を溶融させる温度で可燃物を燃焼さ
せて生じた溶融スラグを排出する燃焼溶融炉の前記溶融
スラグ排出口に設けられ、前記溶融スラグを水冷して固
形スラグにする溶融スラグ水冷装置において、水冷に用
いる水の温度を制御する水温制御手段を備えたことを特
徴とする燃焼溶融炉の溶融スラグ水冷装置。
1. A molten slag provided at the molten slag discharge port of a combustion melting furnace for discharging a molten slag generated by burning a combustible material at a temperature at which ash is melted, wherein the molten slag is water-cooled to a solid slag. A molten slag water cooling device for a combustion melting furnace, comprising a water temperature control means for controlling a temperature of water used for water cooling in the water cooling device.
【請求項2】 請求項1において、前記水温制御手段
は、前記水冷に用いる水の温度を水冷により生成される
固形スラグの粒径を所望の大きさになるように制御する
ものであることを特徴とする燃焼溶融炉の溶融スラグ水
冷装置。
2. The method according to claim 1, wherein the water temperature control means controls a temperature of the water used for the water cooling so that a particle size of solid slag generated by the water cooling becomes a desired size. A molten slag water cooling device for a combustion melting furnace.
【請求項3】 請求項1又は2において、前記水温制御
手段は、前記溶融スラグが落下する水槽に設けられ前記
水冷に用いる水を冷却する冷却器と、前記水槽内の水を
前記冷却器を循環させて戻す循環ポンプと、前記水槽の
水の温度を検知し、前記循環ポンプに駆動、停止信号を
発信する温度コントローラーとを有するものであること
を特徴とする燃焼溶融炉の溶融スラグ水冷装置。
3. The water temperature control means according to claim 1, wherein the water temperature control means is provided in a water tank in which the molten slag falls, and cools water used for water cooling, and cools the water in the water tank with the cooler. A circulating pump for circulating and returning, and a temperature controller for detecting a temperature of the water in the water tank and transmitting a drive signal to the circulating pump and transmitting a stop signal; .
【請求項4】 投入された廃棄物を熱分解し、熱分解ガ
スと主として不揮発性成分からなる熱分解残留物とを生
成する熱分解反応器と、該熱分解反応器で生成された熱
分解ガスと熱分解残留物とを分離して排出する排出装置
と、該排出装置から排出される前記熱分解残留物を燃焼
性成分と不燃焼性成分とに分離する分離装置と、前記熱
分解ガスと前記燃焼性成分とを燃焼用空気と共に燃焼さ
せ、生じた灰分を溶融する燃焼溶融炉と、該燃焼溶融炉
で溶融した溶融スラグを水冷しスラグ化する溶融スラグ
水冷装置とを有する廃棄物処理装置において、前記溶融
スラグ水冷装置は、請求項1乃至3のいずれかに記載の
燃焼溶融炉の溶融スラグ水冷装置を備えたことを特徴と
する廃棄物処理装置。
4. A pyrolysis reactor that pyrolyzes the input waste and generates a pyrolysis gas and a pyrolysis residue mainly composed of nonvolatile components, and a pyrolysis reactor generated by the pyrolysis reactor. A discharge device for separating and discharging a gas and a pyrolysis residue, a separation device for separating the pyrolysis residue discharged from the discharge device into a combustible component and a non-combustible component, and the pyrolysis gas And a combustible component, which burns the combustible component together with combustion air to melt the generated ash, and a molten slag water cooling device for water-cooling the molten slag melted in the combustion melting furnace to form a slag. In the apparatus, the molten slag water cooling device is provided with the molten slag water cooling device of the combustion melting furnace according to any one of claims 1 to 3.
JP23000096A 1996-08-30 1996-08-30 Molten slug water-cooling device for combustion melting furnace Withdrawn JPH1073233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23000096A JPH1073233A (en) 1996-08-30 1996-08-30 Molten slug water-cooling device for combustion melting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23000096A JPH1073233A (en) 1996-08-30 1996-08-30 Molten slug water-cooling device for combustion melting furnace

Publications (1)

Publication Number Publication Date
JPH1073233A true JPH1073233A (en) 1998-03-17

Family

ID=16901038

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH1073233A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001324126A (en) * 2000-05-18 2001-11-22 Takuma Co Ltd Method for detecting discharge failure of molten slag
JP2006206776A (en) * 2005-01-28 2006-08-10 Mitsubishi Heavy Ind Ltd Pressurized coal gasification oven and coal gasification combined power plant
US7384577B2 (en) 2005-03-09 2008-06-10 E.I. Du Pont De Nemours And Company Black conductive thick film compositions, black electrodes, and methods of forming thereof
US7608784B2 (en) 2006-07-13 2009-10-27 E. I. Du Pont De Nemours And Company Photosensitive conductive paste for electrode formation and electrode
US7655864B2 (en) 2006-07-13 2010-02-02 E.I Du Pont De Nemours And Company Photosensitive conductive paste for electrode formation and electrode
US7678296B2 (en) 2006-05-04 2010-03-16 E. I. Du Pont De Nemours And Company Black conductive thick film compositions, black electrodes, and methods of forming thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001324126A (en) * 2000-05-18 2001-11-22 Takuma Co Ltd Method for detecting discharge failure of molten slag
JP2006206776A (en) * 2005-01-28 2006-08-10 Mitsubishi Heavy Ind Ltd Pressurized coal gasification oven and coal gasification combined power plant
JP4533764B2 (en) * 2005-01-28 2010-09-01 三菱重工業株式会社 Pressurized coal gasification furnace and coal gasification combined cycle power generation facility
US7384577B2 (en) 2005-03-09 2008-06-10 E.I. Du Pont De Nemours And Company Black conductive thick film compositions, black electrodes, and methods of forming thereof
US7678296B2 (en) 2006-05-04 2010-03-16 E. I. Du Pont De Nemours And Company Black conductive thick film compositions, black electrodes, and methods of forming thereof
US7608784B2 (en) 2006-07-13 2009-10-27 E. I. Du Pont De Nemours And Company Photosensitive conductive paste for electrode formation and electrode
US7655864B2 (en) 2006-07-13 2010-02-02 E.I Du Pont De Nemours And Company Photosensitive conductive paste for electrode formation and electrode

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