JP2004085074A - Treatment method for burned ash melting exhaust gas - Google Patents

Treatment method for burned ash melting exhaust gas Download PDF

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JP2004085074A
JP2004085074A JP2002246617A JP2002246617A JP2004085074A JP 2004085074 A JP2004085074 A JP 2004085074A JP 2002246617 A JP2002246617 A JP 2002246617A JP 2002246617 A JP2002246617 A JP 2002246617A JP 2004085074 A JP2004085074 A JP 2004085074A
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Prior art keywords
ash
exhaust gas
melting
treated
temperature
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JP2002246617A
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JP3762726B2 (en
Inventor
Seizo Katsui
勝井 征三
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Plantec Inc
株式会社プランテック
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a treatment method for burned ash melting exhaust gas generated from a separately installed ash melting device having high heat efficiency and reduced facility cost. <P>SOLUTION: High temperature melting exhaust gas 44 exhausted from the ash melting device 4 is returned into a treated ash storage device 3 through an exhaust means 33, and stored and treated ash 24 having high moisture and normal temperature is dried/preheated in advance to improve heat efficiency in ash melting. Exhaust gas 45 having reduced temperature is treated and made into harmless substance by an exhaust gas treatment device 6. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、ごみ焼却炉から排出された焼却灰を、一旦貯留したのち溶融・スラグ化する別置型灰溶融装置から排出される溶融排ガスの処理方法に関する。
【0002】
【従来の技術】
従来、ごみ焼却炉から排出される焼却灰は、灰冷却水槽や灰押出手段などで一旦吸湿・冷却されて灰貯留手段に貯留されたのち、場外に搬出されていた。
【0003】
その後、焼却灰の減容・無害化のために灰溶融方式を採用するように行政指導されるに伴い、実用に供されるようになった灰溶融炉の分類は、焼却炉または熱分解炉との関係位置によって、高温の焼却灰または熱分解残渣排出口に直接結合させる直結型と、従来形式の焼却炉から排出された湿灰を、一旦灰ホッパ等に貯留するか、乾灰のままで鉄・非鉄金属・がれき等を分別したのち吸湿・冷却処理する別置型とに大別できる。
【0004】
以下、本発明が対処せんとする従来形式の焼却炉から排出される焼却灰を処理する後者の別置型について、図4にその概略構造を示す特公平7−81695号による別置型灰溶融装置を従来方式の代表例として説明する。
【0005】
図4において、溶融装置Mは、段差のある勾配を有する炉床m1 と炉壁m2 と天井部m3 に囲繞され、プッシャm4 を備えた前半の予熱室m5 と、落下管m6 に連なる後半の溶融室m7 により主体が構成されている。
【0006】
予熱室m5 のプッシャm4 側には灰受入ホッパhが、天井部m3 には溶融排ガス管pmと溶融空気供給管kmとが接続され、溶融室m7 の天井部m3 にはバーナm8 とバーナ空気供給管kbとが配設され、落下管m6 の下部には2次空気配管ksと2次排ガス管psとが接続されている。
【0007】
ここで、図示しないごみ焼却炉で燃焼されて一旦貯留されたのち、鉄分除去等の前処理をされて未燃物があまり残っていない常温の焼却灰rは、灰受入ホッパhからプッシャm4 により少量ずつ予熱室m5 内に送入され、後述の予熱を受けながら、傾斜した炉床m1 上を溶融室m7 へと移送され、バーナ空気供給管kbからの高温のバーナ空気abの供給を受けたバーナm8 により加熱・溶融されて溶融スラグSとなり、落下管m6 から水封コンベアcへと落下する。
【0008】
上述の加熱・溶融により溶融室m7 内で発生した排ガスの大部分は溶融排ガスgmとなり、溶融空気供給管kmから供給される高温の溶融空気amにより排ガス中の未燃分を2次燃焼させるとともに、予熱室m5 内を移送される焼却灰rと対抗流となって、水分を含んだ低温の焼却灰rを表面から予熱して、溶融排ガス管pmを経て、高温空気加熱器kへと排出される。
【0009】
溶融室m7 から発生した残余の2次排ガスgsは、2次空気配管ksから供給される高温の2次空気asにより排ガス中の未燃分を2次燃焼されるとともに、溶融スラグSの冷却凝固を防止するために、溶融スラグSの流れと併走したのち、落下管m6 下部側壁から2次排ガス管psを経て、上記と同じ高温空気加熱器kへと排出される。
【0010】
一方、溶融送風機bにより吸引された空気は、高温空気加熱器kによって、溶融装置Mから排出された排ガスgm,gsと熱交換したのち、高温の空気am,as,abとなり、溶融装置Mの各所に供給される。
【0011】
【発明が解決しようとする課題】
上述のように、従来形式の別置型灰溶融炉は、焼却炉から排出された湿灰中の鉄分を除去し、粉砕した細粒灰を灰ホッパ等に一旦貯留したのち、別置された溶融炉のバーナの熱により溶融する方式である。
【0012】
溶融室m7 で発生した排ガスgm,gsを利用した高温空気加熱器kにより、所要空気を予熱・乾燥しているために熱効率は向上するものの、供給される湿灰rは表面からのみ乾燥されて内部までの乾燥が十分ではないために、多大の燃料費を必要とするばかりでなく、高温の溶融排ガスgmが器内を貫流するために、高温空気加熱器kの高温腐蝕が避けられない。
【0013】
また、焼却灰r中に含有され熱分解された塩素化合物や、揮発した低沸点重金属類及び、バーナm8 の燃焼によって発生した未燃炭素処理のため、排ガスgm及びgsは、焼却炉本体に返送する等の対策が必要となる。
【0014】
さらに、水分が多い常温の焼却灰rの予熱・乾燥のために、該焼却灰rを予熱室m5 に供給して溶融排ガスgmと接触させる方式であり、含有する水分が表面だけ急熱されて水蒸気爆発を起こす虞がある。
【0015】
【問題を解決するための手段】
請求項1に係る発明の焼却灰溶融排ガスの処理方法は、ごみ焼却炉から排出される焼却灰を、一旦貯留したのち溶融・スラグ化処理する別置型灰溶融装置において、灰溶融装置から発生する溶融排ガスを、前処理した処理灰を貯留する処理灰貯留装置に逆送して該処理灰の層内を貫流させて、この処理灰を乾燥・予熱することにより減温した減温排ガスを排ガス処理装置に導いて無害化処理することを特徴とする。
【0016】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
【0017】
図1は本発明に係る焼却灰溶融排ガスの処理方法の概略を示すブロックフロー図であり、図2は処理灰貯留装置と灰溶融装置及びスラグ化装置の概略構造の一例を示す断面図である。
【0018】
図1及び図2において、焼却炉11から排出されて吸湿冷却・貯留手段12で一旦貯留されていた常温焼却灰13は、破砕手段21によって細粒化されたのち、金属分離手段22によって鉄・非鉄23を分離する前処理を行った処理灰24となって後述する処理灰貯留装置3に導入される。
【0019】
この処理灰24は、供給手段31によって処理灰貯槽32内に定量供給され、図示しないレベル制御機構により略定量を貯留された状態で、後述の溶融排ガスの逆流により乾燥・予熱されて昇温焼却灰34となり、定量供給機能を有する排出手段33から次工程の灰溶融装置4に連続的に排出される。
【0020】
灰溶融装置4内に排出された昇温焼却灰34は、溶融バーナ41の火炎による1400℃前後の高温で照射されて、少量ながら残留する有機物は燃焼し、含有するダイオキシン類は熱分解して共に無害なガスになるとともに、主体を成す無機物は次第に溶融してガラス化して前方に傾斜した炉床42上を順次降下してゆき、該炉床42終端からスラグ滴43となってスラグ化装置5に滴下する(図2参照) 。
【0021】
上述の処理灰24中に残留する有機物の燃焼と溶融バーナ41の燃焼により発生した高温の溶融排ガス44は、前記排出手段33を経由して処理灰貯槽32内に逆送され、処理灰貯槽32内に堆積された処理灰24の層内を通過することにより、加湿された常温の処理灰24を乾燥・予熱するとともに溶融排ガス44中の粉じんや未燃炭素粒等を濾過したのち、水蒸気を含む減温排ガス45となって排ガス処理手段61と誘引通風機62で主体が構成される排ガス処理装置6に吸引される。
【0022】
スラグ化装置5に滴下したスラグ滴43は、水または空気による冷却体51の噴射を受けて急冷または予冷されたのち水封されたスラグ貯槽53に落下して、粒状または不定形塊状に破砕された破砕スラグSとなって貯留され、上述のスラグ滴43の冷却により発生した冷却排ガス54も、上記溶融排ガス44と共に処理灰貯留装置3を経由して排ガス処理装置6に吸引される。
【0023】
排ガス処理装置6は、例えばガス冷却手段を備えたバグフィルタの如き排ガス処理手段61と、上述の排ガスを吸引する誘引通風機62とで主体が構成されており、灰溶融装置4で処理灰24中に残留していた有害ガスを熱分解した溶融排ガス44は、処理灰貯槽32を逆送されることにより減温するとともに粉じんを濾過された減温排ガス45となり、送入された排ガス処理手段61において残留する有害ガスや粉じん及び低沸点重金属を中和・吸着・濾過して更に浄化されたのち清浄ガス63として大気中に放出され、排ガス処理手段61で捕集された捕集灰64は、供給手段31の前に返送される。
【0024】
ここで図2に一例を示す如く、処理灰貯留装置3は、例えばスクリューフィーダの如き定量供給器兼シール機構である供給手段31を入口側に、例えばセラミック製の多軸ロールフィーダの如く、定量供給機能と気体通過機能を兼ね備えた耐熱材料製の排出手段33を出口側に配設するとともに、上端に排気ダクト35を備えた処理灰貯槽32により主体が構成されている。
【0025】
また、灰溶融装置4は全体が耐熱材料で構築されており、昇温焼却灰34とその溶融物が流下するように前方に傾斜した炉床42の入口側には排出手段33に連結される供給口46が、出口側にはスラグ化装置5が配設され、天井部には溶融バーナ41が設置されている。
【0026】
さらに、スラグ化装置5は、灰溶融装置4の出口側とスラグ貯槽53とを結ぶスラグ落下管55に、スラグ滴43に冷却体51を噴射する噴射ノズル56が配設されている。
【0027】
次に第2の実施例を図面に基いて説明する。
【0028】
図3は処理灰貯留装置と灰溶融装置及びスラグ化装置に関する第2の概略構造の一例を示す断面図であり、図2と同様の部品には同一の符号を付し、詳細説明は省略する。
【0029】
図3において、傾斜した処理灰貯槽36の上下には例えばロータリーフィーダの如き定量供給器である供給手段37と排出手段38とが備えられ、灰溶融装置4の供給口46に近い喉部47は溶融装置4内の高温をシールするために絞られており、該喉部47に向けてフィーダ48が配設されている。
【0030】
スラグ落下管55の上端は、溶融排ガス44を逆送するために排出手段38の側部に配設された溶融排ガス導入口39に繋がる溶融排ガス管49が取付けられ、下方には冷却排ガス54を前述した排ガス処理手段61に流すための冷却排ガス管57が配設されている。
【0031】
なお、本実施の形態で説明した供給手段31、37及び排出手段33、38はあくまでも一例であり、その目的を達するものであればどのような形式でもよい。
【0032】
【発明の効果】
以上述べたように、本発明の焼却灰溶融排ガスの処理方法によれば、灰溶融装置に供給される多湿で冷却された処理灰を、溶融排ガスを有効利用して事前に乾燥・予熱することにより、灰溶融装置の熱効率を向上させるだけでなく、灰溶融に伴って発生する有害ガスを含んだ高温の溶融排ガスの温度を低下させたのち排ガス処理を行うので、高温腐蝕の可能性が高い高温空気加熱器kが必要でなくなることと合わせ、排ガス処理装置の設備費が低減できる。
【0033】
また、処理灰は層内を貫流する溶融排ガスにより下方から徐々に昇温されるために水分の急熱による水蒸気爆発の危険性がなくなるとともに、灰溶融装置内の温度が安定化する。
【図面の簡単な説明】
【図1】本発明に係る焼却灰溶融排ガスの処理方法の概略を示すブロックフロー図である。
【図2】処理灰貯留装置と灰溶融装置及びスラグ化装置の概略構造の一例を示す断面図である。
【図3】処理灰貯留装置と灰溶融装置及びスラグ化装置に関する第2の概略構造の一例を示す断面図である。
【図4】従来の別置型灰溶融炉を示す断明図である。
【符号の説明】
3 処理灰貯留装置
4 灰溶融装置
6 排ガス処理装置
24 処理灰
44 溶融排ガス
45 減温排ガス
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for treating molten exhaust gas discharged from a separate ash melting device that temporarily stores incinerated ash discharged from a refuse incinerator and then melts and slags the ash.
[0002]
[Prior art]
Conventionally, incineration ash discharged from a refuse incinerator has been once absorbed and cooled by an ash cooling water tank or ash extrusion means, stored in an ash storage means, and then carried out of the yard.
[0003]
After that, administrative guidance was given to adopt the ash melting method to reduce the volume and detoxification of incinerated ash, and the classification of ash melting furnaces that came into practical use was classified as incinerators or pyrolysis furnaces. Depending on the relative position, the direct connection type to the high-temperature incineration ash or the pyrolysis residue discharge port, and the wet ash discharged from the conventional incinerator are stored temporarily in an ash hopper, etc. Can be roughly classified into a separate type that separates iron, non-ferrous metal, debris, etc., and then absorbs and cools.
[0004]
In the following, a separate type ash melting apparatus according to Japanese Patent Publication No. 7-81695, whose schematic structure is shown in FIG. This will be described as a typical example of the conventional method.
[0005]
4, melter M is surrounded by a hearth m 1 and the furnace wall m 2 and ceiling m 3 having a slope having a step, a preheating chamber m 5 of the first half having a pusher m 4, drop tube m entity is constituted by melter m 7 of the second half leading to 6.
[0006]
Pusher m 4 side ash receiving hopper h in the preheating chamber m 5 is, in the ceiling m 3 is connected to the melt exhaust tube pm and melt air supply pipe km are burners in the ceiling portion m 3 of the melter m 7 m 8 and the burner air supply pipe kb is arranged, and the secondary air pipe ks and secondary exhaust gas pipe ps is connected to the lower part of the drop tube m 6.
[0007]
Here, the incinerated ash r at normal temperature, which is burned in an incinerator (not shown) and once stored and then subjected to a pretreatment such as removal of iron and remaining little unburned matter, is pushed from the ash receiving hopper h to the pusher m 4. by being fed in small portions preheating chamber m 5, while being preheated below, the upper hearth m 1 inclined been transferred to melters m 7, the hot burner air ab from the burner air supply pipe kb molten slag S next are heated and melted by a burner m 8 which has received the supply, falling from the drop tube m 6 to water sealing conveyor c.
[0008]
Most of the exhaust gas generated in the melter m 7 by heating and melting the above molten exhaust gm, and the unburned in the exhaust gas to secondary combustion by the high temperature of the molten air am supplied from the molten air supply pipe km together, become ash r being transported preheating chamber m 5 and counter flow, the ash r cold containing water preheated from the surface, through the melt discharge tube pm, the hot air heater k Is discharged.
[0009]
Secondary exhaust gs residual generated from the melter m 7, together with the unburned in the exhaust gas is secondarily burned by the high temperature of the secondary air as supplied from the secondary air pipe ks, cooling the molten slag S to prevent coagulation, after travel together with the flow of the molten slag S, a drop tube m 6 lower sidewall through the secondary exhaust pipe ps, is discharged to the same hot air heater k as above.
[0010]
On the other hand, the air sucked by the melting blower b exchanges heat with the exhaust gas gm, gs discharged from the melting device M by the high-temperature air heater k, and then becomes high-temperature air am, as, ab. It is supplied to various places.
[0011]
[Problems to be solved by the invention]
As described above, the conventional separate-type ash melting furnace removes the iron component in the wet ash discharged from the incinerator, temporarily stores the finely-ground fine ash in an ash hopper or the like, and then separates the molten ash from the separately placed ash melting furnace. It is a method of melting by the heat of the furnace burner.
[0012]
Exhaust gm generated in melter m 7, the hot air heater k using gs, the thermal efficiency in order to have pre-dried the required air although improved, Shimehai r supplied is dried only from the surface In addition to the fact that the internal drying is not sufficient, not only does a large amount of fuel cost be required, but also the high-temperature corrosion of the high-temperature air heater k is inevitable because the high-temperature molten exhaust gas gm flows through the inside of the chamber. .
[0013]
Moreover, and chlorine compounds contained pyrolyzed during incineration ash r, low-boiling heavy metals volatilized and, for unburned carbon treatment generated by the combustion of the burner m 8, the exhaust gas gm and gs are the incinerator body Countermeasures such as sending back are required.
[0014]
Furthermore, because of the preheating and drying of the ash r juicy normal temperature, it is a method of contacting with molten exhaust gm supplying the ash r in the preheating chamber m 5, is rapidly heated water contained only the surface Could cause a steam explosion.
[0015]
[Means to solve the problem]
A method for treating incinerated ash molten exhaust gas according to the first aspect of the present invention is a separate ash melting device for temporarily storing incinerated ash discharged from a refuse incinerator and then melting and slag-treating the incinerated ash generated from the ash melting device. The molten exhaust gas is sent back to the treated ash storage device that stores the pretreated treated ash, flows through the treated ash layer, and the treated ash is dried and preheated. It is characterized in that it is guided to a processing device to perform detoxification processing.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a block flow diagram showing an outline of a method for treating incinerated ash molten exhaust gas according to the present invention, and FIG. 2 is a sectional view showing an example of a schematic structure of a treated ash storage device, an ash melting device, and a slag forming device. .
[0018]
1 and 2, the room temperature incinerated ash 13 discharged from the incinerator 11 and once stored in the moisture absorbing / cooling / storing means 12 is pulverized by the crushing means 21, and then is subjected to iron / metal separation by the metal separating means 22. The treated ash 24 that has been subjected to the pretreatment for separating the non-ferrous iron 23 is introduced into the treated ash storage device 3 described later.
[0019]
The treated ash 24 is supplied quantitatively into the treated ash storage tank 32 by the supply means 31, and is dried and preheated by the backflow of the molten exhaust gas to be described later in a state where a substantially constant amount is stored by a level control mechanism (not shown). It becomes ash 34 and is continuously discharged from the discharging means 33 having a constant supply function to the ash melting device 4 in the next step.
[0020]
The heated incineration ash 34 discharged into the ash melting device 4 is irradiated at a high temperature of about 1400 ° C. due to the flame of the melting burner 41, and a small amount of remaining organic matter is burned, and the contained dioxins are thermally decomposed. Both become harmless gases, and the main constituent inorganic substances are gradually melted and vitrified and descend sequentially on the furnace floor 42 inclined forward, and become slag droplets 43 from the end of the hearth 42 to form a slag forming apparatus. 5 (see FIG. 2).
[0021]
The high-temperature molten exhaust gas 44 generated by the combustion of the organic matter remaining in the above-described treated ash 24 and the combustion of the molten burner 41 is sent back to the treated ash storage tank 32 via the discharge means 33, and is then returned to the treated ash storage tank 32. After passing through the layer of treated ash 24 deposited in the inside, the humidified treated ash 24 at normal temperature is dried and preheated, and after filtering out dust and unburned carbon particles in the molten exhaust gas 44, the steam is removed. The exhaust gas is contained in the exhaust gas treatment device 6 mainly composed of the exhaust gas treatment means 61 and the induction ventilator 62.
[0022]
The slag droplets 43 dropped on the slag forming device 5 are cooled or pre-cooled by injection of a cooling body 51 with water or air, then fall into a water-sealed slag storage tank 53, and are crushed into granular or amorphous masses. The cooled exhaust gas 54 generated as a result of the cooling of the slag droplets 43 is also sucked into the exhaust gas treatment device 6 via the treated ash storage device 3 together with the molten exhaust gas 44.
[0023]
The exhaust gas treatment device 6 is mainly composed of an exhaust gas treatment device 61 such as a bag filter provided with a gas cooling device, and an induction ventilator 62 for sucking the above-described exhaust gas. The molten exhaust gas 44 obtained by thermally decomposing the harmful gas remaining therein is cooled down by being sent back through the treated ash storage tank 32 and becomes a reduced temperature exhaust gas 45 in which dust is filtered out. The harmful gas, dust and low-boiling heavy metals remaining in 61 are further purified by neutralization, adsorption and filtration, and then released into the atmosphere as a clean gas 63, and the collected ash 64 collected by the exhaust gas treatment means 61 , Before the supply means 31.
[0024]
Here, as shown in FIG. 2, the treated ash storage device 3 includes a feeder 31, which is a fixed-quantity feeder / seal mechanism such as a screw feeder, on the inlet side, and a fixed-quantity feeder such as a ceramic multi-axis roll feeder. A discharge means 33 made of a heat-resistant material having both a supply function and a gas passing function is provided on the outlet side, and a main body is constituted by a treated ash storage tank 32 having an exhaust duct 35 at an upper end.
[0025]
The ash melting device 4 is entirely made of a heat-resistant material, and is connected to a discharge means 33 at an inlet side of a furnace floor 42 inclined forward so that the heated incineration ash 34 and its melt flow down. The supply port 46 is provided with the slagging device 5 on the outlet side, and the melting burner 41 is provided on the ceiling.
[0026]
Further, in the slag converting device 5, an injection nozzle 56 for injecting the cooling body 51 to the slag droplet 43 is provided in a slag dropping pipe 55 connecting the outlet side of the ash melting device 4 and the slag storage tank 53.
[0027]
Next, a second embodiment will be described with reference to the drawings.
[0028]
FIG. 3 is a cross-sectional view showing an example of a second schematic structure of the treated ash storage device, the ash melting device, and the slag forming device. Components similar to those in FIG. 2 are denoted by the same reference numerals, and detailed description is omitted. .
[0029]
In FIG. 3, a supply means 37 and a discharge means 38, which are, for example, a quantitative feeder such as a rotary feeder, are provided above and below the inclined treated ash storage tank 36, and a throat 47 near the supply port 46 of the ash melting device 4 is provided. It is throttled to seal the high temperature in the melting device 4, and a feeder 48 is provided toward the throat 47.
[0030]
At the upper end of the slag dropping pipe 55, a molten exhaust gas pipe 49 connected to a molten exhaust gas introduction port 39 arranged on the side of the discharge means 38 for backward feeding of the molten exhaust gas 44 is attached, and a cooling exhaust gas 54 is provided below. A cooling exhaust gas pipe 57 for flowing to the above-described exhaust gas processing means 61 is provided.
[0031]
The supply means 31, 37 and the discharge means 33, 38 described in the present embodiment are merely examples, and any form may be used as long as it achieves its purpose.
[0032]
【The invention's effect】
As described above, according to the method for treating incinerated ash molten exhaust gas of the present invention, the treated ash cooled in the humid atmosphere supplied to the ash melting device is dried and preheated in advance by effectively utilizing the molten exhaust gas. In addition to improving the thermal efficiency of the ash melting device, the exhaust gas treatment is performed after lowering the temperature of the high-temperature molten exhaust gas containing harmful gases generated with the ash melting, so the possibility of high-temperature corrosion is high. In addition to eliminating the need for the high-temperature air heater k, the equipment cost of the exhaust gas treatment device can be reduced.
[0033]
Further, since the temperature of the treated ash is gradually increased from below by the molten exhaust gas flowing through the inside of the layer, there is no danger of steam explosion due to rapid heating of moisture, and the temperature in the ash melting device is stabilized.
[Brief description of the drawings]
FIG. 1 is a block flow diagram showing an outline of a method for treating incinerated ash molten exhaust gas according to the present invention.
FIG. 2 is a sectional view showing an example of a schematic structure of a treated ash storage device, an ash melting device, and a slag forming device.
FIG. 3 is a sectional view showing an example of a second schematic structure relating to a treated ash storage device, an ash melting device, and a slag forming device.
FIG. 4 is a schematic view showing a conventional separate ash melting furnace.
[Explanation of symbols]
3 Treated ash storage device 4 Ash melting device 6 Exhaust gas treatment device 24 Treated ash 44 Melted exhaust gas 45 Reduced temperature exhaust gas

Claims (1)

ごみ焼却炉から排出される焼却灰を、一旦貯留したのち溶融・スラグ化処理する別置型灰溶融装置において、
灰溶融装置から発生する溶融排ガスを、前処理した処理灰を貯留する処理灰貯留装置に逆送して該処理灰の層内を貫流させて、この処理灰を乾燥・予熱することにより減温した減温排ガスを排ガス処理装置に導いて無害化処理することを特徴とする焼却灰溶融排ガスの処理方法。
In a separate ash melting device that temporarily stores the incinerated ash discharged from the refuse incinerator, then melts and slags it,
The molten exhaust gas generated from the ash melting device is sent back to the treated ash storage device that stores the pretreated treated ash, flows through the treated ash layer, and the treated ash is dried and preheated to reduce the temperature. A method for treating incinerated ash molten exhaust gas, which comprises introducing the reduced temperature exhaust gas to an exhaust gas treatment device for detoxification.
JP2002246617A 2002-08-27 2002-08-27 Incineration ash molten exhaust gas treatment method Expired - Fee Related JP3762726B2 (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007170785A (en) * 2005-12-26 2007-07-05 Vsd:Kk Humidified incinerated ash melting furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007170785A (en) * 2005-12-26 2007-07-05 Vsd:Kk Humidified incinerated ash melting furnace

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