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JP3845840B2 - Dismantling method of waste incineration facility - Google Patents
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JP3845840B2 - Dismantling method of waste incineration facility - Google Patents

Dismantling method of waste incineration facility Download PDF

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Publication number
JP3845840B2
JP3845840B2 JP2002132974A JP2002132974A JP3845840B2 JP 3845840 B2 JP3845840 B2 JP 3845840B2 JP 2002132974 A JP2002132974 A JP 2002132974A JP 2002132974 A JP2002132974 A JP 2002132974A JP 3845840 B2 JP3845840 B2 JP 3845840B2
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Prior art keywords
waste
incinerator
area
side input
pit
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JP2003329222A (en
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澄夫 堀内
高男 武
正人 川口
素之 浅田
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Shimizu Corp
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Shimizu Corp
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Description

【0001】
【発明の属する技術分野】
本発明は廃棄物焼却施設の解体方法に関するものである。
【0002】
【発明が解決しようとする課題】
近年、ダイオキシン類による人体への健康被害が問題となっていることから、ダイオキシンの発生を抑えるための各種の規制が発せられるようになってきた。
例えば、廃棄物焼却施設はダイオキシン類に汚染されている度合いが高く、その改修、解体を行なうにあたって、ダイオキシン類による作業員の健康被害や周辺環境への汚染の広がりが懸念されており、これに対処するために、廃棄物焼却施設内作業におけるダイオキシン類ばく露防止についての規制が高められている。
【0003】
このようなダイオキシン類による汚染が懸念される廃棄物焼却施設の一般的な構成を図1に示している、この廃棄物焼却施設1はその施設内においてごみピットエリア2と焼却炉エリア3とに区分けされている。前記ごみピットエリア2には廃棄物を貯め受けるごみピット4があり、ごみピット4の上縁に連続するプラットホーム5に進入した塵芥収集車aがプラットホーム側投入部6から廃棄物が投入される。そして、ごみピット4の廃棄物はごみピットエリア2の上部にあるごみクレーン7により前記焼却炉エリア3へと送り出される。
ごみピットエリア2と焼却炉エリア3との区分は構造体8により行われていて、焼却炉9側に廃棄物を送り出すプッシャーを備えたごみホッパー10がその構造体8に焼却炉側投入部11として配置されている。上方を向いたごみホッパー10(焼却炉側投入部11)に上記ごみクレーン7から廃棄物が投入されて焼却炉9に送り込まれる。送り込まれてきた廃棄物を焼却する焼却炉9は焼却炉エリア3にあり、この焼却炉9に、焼却灰を灰ピット12まで送る灰送り機構13が接続されている。灰ピット12に貯められた焼却灰は専用車両に積み入れられ、専用施設で処理される。
また、焼却炉エリア3では、上記焼却炉9で廃棄物を焼却することによって生じる煙を、焼却炉9に繋がるガス冷却室14、電気集塵装置15などからなる排気経路を通して排煙処理し、煙突16から排出するようにしている。
【0004】
上述した廃棄物焼却施設を解体するに際し、個々の作業では各種装置の表面に積もっている粉塵を取り除いた後、高圧洗浄装置などによって装置の内部や細部に付着している汚染物を除去することとなり、規制をクリアすべく防護服を着用した作業員が定められた手順により作業を行なってダイオキシン類を除去する。
このような一般的な廃棄物焼却設備1でダイオキシン類の汚染が特に激しいのは電気集塵装置15と灰ピット12であるが、電気集塵装置15に対するダイオキシン類の除去作業に際して以下の不都合がある。
【0005】
電気集塵装置は排ガス中の煤塵を静電気で捕集する装置であり、放電極からのコロナ放電によって煤塵を負に帯電させた後、正に帯電した集塵極に付着させるようにしている。そして、電気集塵装置は大型であり、しかもケーシングは金属板を溶接して製作されている場合が多い。また、この電気集塵装置の両電極は4m以上の長尺物が使われているが、図1に示したように電気集塵装置と施設建屋の天井の間のクリアランスが数mしかない状態で設置されているのが現状であり、立ち並びした電極それぞれを上方へと抜き上げることができない。そして、電極同士は接近していてこの電極間に作業員が入って作業する空間がなく、作業員による手作業ではこの電気集塵装置を内側から解体することができない。
さらに、電気集塵装置の付着物中には比較的高い濃度のダイオキシンが含まれ、上述したように廃棄物焼却施設中での汚染度合いが高いが、ダイオキシンで汚染された装置類は、密閉空間で汚染部分を取り除いた後、解体しなければならないと法律(「労働の安全衛生規則の一部改正」および「廃棄物焼却施設内作業におけるダイオキシン類ばく露防止対策要綱」平成13年4月25日付基発第401号の2)で定められている。また、ダイオキシン類は熱で気化して周囲を汚染するため、ガス切りによる細かい分断作業は避けなければならない。
【0006】
このような状況下での電気集塵装置の解体にあたって、特に問題となるのは長尺である電極の取り外し作業、電極の除染作業、電極の洗浄作業である。電気集塵装置内で汚染部分を除去できればよいのであるが、上述したように電極の間が作業空間が確保できない。また、電気集塵装置の周りにも十分な作業空間も確保できない。
このため、例えば、廃棄物焼却施設の天井を一部外したりして作業空間を確保し、この空間を密閉状態にして電極を除染し、外部に運び出すなどの方策を採っていた。しかしながら、こうした作業空間の確保には多大の費用と労力が必要とされ、その他に最終的にはその増設スペースの解体を伴うことになるため、発生する廃棄物量が増えてしまうという問題があった。
そこで本発明は上記事情に鑑み、解体する対象の廃棄物焼却施設の内部に、解体部材の除染を行なうための閉じた除染領域と、設備を解体するための閉じた空間とを区別して構成することを課題とし、解体する廃棄物焼却施設に新しい密封空間を増設することなく諸設備の除染、解体を行なって撤去ができるようにすることを目的とする。
【0007】
【課題を解決するための手段】
本発明は上記課題を考慮してなされたもので、施設内が、プラットホーム側投入部を介して投入された廃棄物をごみピットで貯め受けるごみピットエリアと、前記廃棄物を焼却処理する焼却炉エリアとに区分され、ごみピットエリアと焼却炉エリアとの区分位置に設けられた焼却炉側投入部を介して廃棄物をごみピットエリアから焼却炉エリアにある焼却炉に送り込み、焼却炉にて廃棄物を焼却処分するとともに、前記焼却により生じる煙を焼却炉エリアにある電気集塵装置を介して煙処理したのちに煙突から排出する廃棄物焼却施設において、ごみピット内の廃棄物を取り除いた後にごみピットエリアをダイオキシン類濃度が所定値未満となるまで清浄化して、このごみピットエリアを、外部につながるプラットホーム側投入部と焼却炉側投入部とに開閉する仕切りを設けて密閉可能な除染領域とするとともに、前記焼却炉側投入部の仕切りにより焼却炉エリアを密閉可能に設け、焼却炉エリアにおける装置類を解体した解体部材を逐次、焼却炉側投入部を経て前記除染領域のごみピットに移送し、除染領域に移送された解体部材を、密閉状態としたこの除染領域で除染、洗浄し、除染、洗浄済みの解体部材を除染領域のプラットホーム側投入部から外部に搬出することを特徴とする廃棄物焼却施設の解体方法を提供して、廃棄物焼却施設の解体方法を提供して上記課題を解消するものである。
【0008】
【発明の実施の形態】
つぎに本発明を図1から図3に示す実施の形態に基づいて詳細に説明する。
本発明において解体する廃棄物焼却施設1は、上述したように施設内がごみピットエリア2と焼却炉エリア3とに構造体8により区分けされ、ごみピットエリア2に、プラットホーム5の塵芥収集車aから廃棄物を貯め受けるごみピット4があり、このごみピット4の廃棄物をごみクレーン7により焼却炉エリア3へと送り出し、焼却炉エリア3の焼却炉9にて廃棄物を焼却処分するとともに、この焼却によって生じる煙を、焼却炉9に繋がるガス冷却室14、電気集塵装置15などからなる排気経路を通して排煙処理し、煙突16から排出している。
本発明において上記構造の廃棄物焼却施設1を解体するに際して、まず、ごみピット4内の廃棄物を取り除いた後にごみピットエリア2をダイオキシン類濃度が所定値未満となるまで清浄化するものであって、廃棄物焼却施設内作業におけるダイオキシン類ばく露防止対策要綱(基発第401号)における作業環境評価基準に準じた管理区画の決定方法による第一管理区域に相当するまで清浄化する。そして、図2に示すように、清浄化したごみピットエリア2を、プラットホーム側投入部6と焼却炉側投入部11とに開閉可能な仕切り17を設けた除染領域として廃棄物焼却施設1の内部に形成する。前記仕切り17は鋼板製のものであり、プラットホーム側投入部6では既存設備のシャッターなどの装置が仕切りとして使用され、また、上記ごみホッパー10が位置する焼却炉側投入部11には、上方から被せ付ける蓋形式のものを設けるようにして、除染領域であるごみピットエリア2を密封状態とすることができるようにする。
【0009】
つぎに、焼却炉エリア3における電気集塵装置15以外の諸設備を、上記焼却炉側投入部11の仕切り17を閉じて密封状態としたこの焼却炉エリア3内で解体し、焼却炉側投入部11の仕切り17を開け閉めしながらごみクレーン7を利用して解体部材を逐次、除染領域であるごみピットエリア2のごみピット4に移送する。そして、プラットホーム側投入部6と焼却炉側投入部11の仕切り17を閉じた密閉状態で除染領域のごみピット4内にて除染、洗浄し、除染、洗浄済みの解体部材をプラットホーム側投入部6の仕切り17を開いてプラットホーム5から外部へ搬出する。以上の作業を繰り返して電気集塵装置15以外の諸設備を撤去する(図3参照)。
【0010】
上述したように焼却炉エリア3における電気集塵装置15以外の焼却設備を撤去した後、この焼却炉エリア3に揚重設備18を設置する。図示の例では前記揚重設備18のための構台19が構築されており、この構台19の下部には、揚重設備18の稼働に支障を来さない範囲で設備が残されている状態を示している。そして、焼却炉エリア3を密閉状態として電気集塵装置15の側面ケーシングまたは天井ケーシングのいずれか、またはその両方を取り外すようにする。続いて、前記揚重装置18を稼働させながらケーシングが開かれている電気集塵装置15から放電極と集塵極を取り出すようにする。
取り出された放電極と集塵極とは、上述した電気集塵装置15以外の諸設備を撤去する場合と同じように、焼却炉側投入部11の仕切り17を開け閉めしながらごみクレーン7を利用して逐次、除染領域のごみピット4に移送する。そして、プラットホーム側投入部6と焼却炉側投入部11の仕切り17を閉じた密閉状態で放電極と集塵極をごみピット4内にて除染、洗浄する。その後、除染、洗浄済みの放電極と集塵極をプラットホーム側投入部6の仕切り17を開いてプラットホーム5から外部へ搬出する(図4参照)。電気集塵装置15のケーシングについても同様の手順にて解体、除染、洗浄を行なって外部に排出される。
以上のようにして施設内の諸設備を撤去した後には、建物全体の除染を行なってから解体を行なうようにする。
【0011】
本発明を実施した場合のコスト試算を行なってみた。除染領域として新たに高さ10m×幅10m×奥行30mの空間を5万円/m2をH型鋼による簡易鉄骨造で作ると仮定すれば、5万円/m2×300m2=1500万円が必要となる。これに天井クレーンや排水槽などの設備が必要となるので、3000万円程度のコストになる。本発明を実施した場合では、これに要する費用が削減できるだけでなく、無駄な資源を消費しない済む。
【0012】
【発明の効果】
以上説明した本発明により、廃棄物焼却施設自体を利用してその内部において諸設備解体空間を密閉できるようにしているとともに、ごみピットを利用して密閉できる領域を除染領域として、諸設備解体空間側から送り込まれてきた解体部材を除染、洗浄するようにしているため、廃棄物焼却設備に新たな除染領域を増設することなく設備の解体が行なえる。そして、廃棄物焼却施設の解体に際して新たな除染領域の増設が不要であるため、コストを低減させることができるなど、実用性に優れた効果を奏するものである。
【図面の簡単な説明】
【図1】本発明に係る廃棄物焼却施設の解体方法の一例を実施する廃棄物焼却設備の一例を概略的に示す説明図である。
【図2】プラットホーム側投入部と焼却炉側投入部とに仕切りを設けた状態を示す説明図である。
【図3】焼却炉エリア側の電気集塵装置を除く設備を撤去した状態を示す説明図である。
【図4】電気集塵装置の電極の取り出しと除染、洗浄とを示す説明図である。
【符号の説明】
1…廃棄物焼却施設
2…ごみピットエリア
3…焼却炉エリア
4…ごみピット
5…プラットホーム
a…塵芥収集車
6…プラットホーム側投入部
7…ごみクレーン
8…構造体
9…焼却炉
10…ごみホッパー
11…焼却炉側投入部
12…灰ピット
13…灰送り機構
14…ガス冷却室
15…電気集塵装置
16…煙突
17…仕切り
18…揚重設備
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for dismantling a waste incineration facility.
[0002]
[Problems to be solved by the invention]
In recent years, since health damage to human bodies due to dioxins has become a problem, various regulations have been issued to suppress the generation of dioxins.
For example, waste incineration facilities are highly contaminated with dioxins, and there are concerns about the damage to workers' health and the spread of contamination to the surrounding environment due to dioxins when repairing or dismantling them. In order to cope with this, regulations on the prevention of dioxin exposure during work in waste incineration facilities have been raised.
[0003]
FIG. 1 shows a general configuration of a waste incineration facility in which contamination with dioxins is a concern. This waste incineration facility 1 includes a waste pit area 2 and an incinerator area 3 in the facility. It is divided. The waste pit area 2 has a waste pit 4 for storing waste, and the refuse collection vehicle a that has entered the platform 5 that is continuous with the upper edge of the waste pit 4 is thrown into the waste from the platform side input section 6. The waste in the waste pit 4 is sent out to the incinerator area 3 by a waste crane 7 in the upper part of the waste pit area 2.
The waste pit area 2 and the incinerator area 3 are divided by the structure 8, and a waste hopper 10 having a pusher for sending waste to the incinerator 9 side is provided to the structure 8 with an incinerator side input unit 11. Is arranged as. Waste is introduced from the garbage crane 7 into the waste hopper 10 (incinerator-side charging section 11) facing upward, and sent to the incinerator 9. An incinerator 9 that incinerates the waste that has been sent is in the incinerator area 3, and an ash feed mechanism 13 that sends the incinerated ash to the ash pit 12 is connected to the incinerator 9. The incinerated ash stored in the ash pit 12 is loaded into a dedicated vehicle and processed at a dedicated facility.
Further, in the incinerator area 3, smoke generated by incineration of waste in the incinerator 9 is exhausted through an exhaust path including a gas cooling chamber 14 connected to the incinerator 9, an electric dust collector 15, and the like. It is made to discharge from the chimney 16.
[0004]
When dismantling the above-mentioned waste incineration facilities, after removing dust accumulated on the surface of each device in each work, remove the contaminants adhering to the inside and details of the device with a high-pressure washing device etc. In order to clear the regulations, workers wearing protective clothing work in accordance with established procedures to remove dioxins.
In such a general waste incineration facility 1, the contamination of dioxins is particularly severe in the electrostatic precipitator 15 and the ash pit 12. However, there are the following inconveniences when the dioxins are removed from the electrostatic precipitator 15. is there.
[0005]
The electrostatic precipitator is a device that collects the dust in the exhaust gas by static electricity, and negatively charges the dust by corona discharge from the discharge electrode, and then attaches it to the positively charged dust collecting electrode. The electric dust collector is large, and the casing is often manufactured by welding a metal plate. In addition, long electrodes of 4m or more are used for both electrodes of this electrostatic precipitator, but the clearance between the electrostatic precipitator and the ceiling of the facility building is only a few meters as shown in FIG. In the present situation, each of the arranged electrodes cannot be pulled upward. The electrodes are close to each other, and there is no space for workers to enter between the electrodes to work, and the electric dust collector cannot be disassembled from the inside by manual work by the workers.
Furthermore, the deposits of the electrostatic precipitator contain a relatively high concentration of dioxin, and as described above, the degree of contamination in the waste incineration facility is high, but devices contaminated with dioxin are sealed spaces. After removing the contaminated part in the law, it must be dismantled (“Partial Amendment to Labor Safety and Health Rules” and “Dioxin Exposure Prevention Guidelines for Work in Waste Incineration Facilities” April 25, 2001 It is defined in 2) of date basis No. 401. Dioxins are vaporized by heat and contaminate the surroundings, so fine work by gas removal must be avoided.
[0006]
When disassembling the electrostatic precipitator in such a situation, particularly problematic are the long electrode removal work, electrode decontamination work, and electrode cleaning work. Although it is only necessary to remove the contaminated portion in the electric dust collector, a work space cannot be secured between the electrodes as described above. In addition, a sufficient working space cannot be secured around the electrostatic precipitator.
For this reason, for example, measures are taken such as removing a part of the ceiling of the waste incineration facility to secure a work space, decontaminating the electrode in a sealed state, and carrying it out. However, securing such a work space requires a large amount of money and labor, and in addition, there is a problem that the amount of generated waste increases because it eventually involves the dismantling of the additional space. .
Therefore, in view of the above circumstances, the present invention distinguishes between a closed decontamination area for decontamination of dismantling members and a closed space for dismantling equipment in the waste incineration facility to be dismantled. The purpose is to make it possible to decontaminate and dismantle various facilities without adding a new sealed space to the waste incineration facility to be dismantled.
[0007]
[Means for Solving the Problems]
The present invention has been made in consideration of the above-mentioned problems. A waste pit area in which the waste stored in the facility through the platform side input portion is stored in a waste pit, and an incinerator for incinerating the waste. Waste is sent from the waste pit area to the incinerator in the incinerator area through the incinerator side input section provided at the position where the waste pit area and the incinerator area are separated. Waste was incinerated, and the waste in the garbage pit was removed at the waste incineration facility where the smoke generated by the incineration was treated with smoke through the electric dust collector in the incinerator area and then discharged from the chimney. Later, the waste pit area is cleaned until the dioxin concentration is less than the specified value, and this waste pit area is connected to the platform side input section and the incinerator side. A decontamination area that can be sealed by providing a partition that opens and closes to the entrance, and an incinerator area that can be hermetically sealed by the partition on the incinerator side input section, and dismantling members that disassemble the devices in the incinerator area The decontaminated parts that have been transferred to the debris pit in the decontamination area through the incinerator side input part and decontaminated in the sealed state are cleaned and decontaminated and cleaned. The dismantling method of the waste incineration facility is provided by removing the dismantling member of the waste from the platform side input part of the decontamination region, and the dismantling method of the waste incineration facility is provided to solve the above problem Is.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail based on the embodiment shown in FIGS.
The waste incineration facility 1 to be dismantled in the present invention is divided into a waste pit area 2 and an incinerator area 3 by a structure 8 as described above, and the garbage collection vehicle a of the platform 5 is separated into the waste pit area 2. There is a waste pit 4 for storing waste from the waste pit 4 and the waste pit 4 waste is sent to the incinerator area 3 by the garbage crane 7 and incinerated in the incinerator 9 in the incinerator area 3. Smoke generated by the incineration is exhausted through an exhaust path including a gas cooling chamber 14 connected to the incinerator 9, an electric dust collector 15, and the like, and is discharged from the chimney 16.
In dismantling the waste incineration facility 1 having the above-described structure in the present invention, first, after the waste in the waste pit 4 is removed, the waste pit area 2 is cleaned until the dioxin concentration becomes less than a predetermined value. Then, clean up until it corresponds to the first management area by the method of determining the management area according to the work environment evaluation criteria in the Dioxin Exposure Prevention Measures Summary (Basic 401) in the work in the waste incineration facility. Then, as shown in FIG. 2, the waste pit area 2 is used as a decontamination region in which the cleaned garbage pit area 2 is provided with a partition 17 that can be opened and closed at the platform-side input unit 6 and the incinerator-side input unit 11. Form inside. The partition 17 is made of a steel plate. In the platform side input unit 6, a device such as a shutter of existing equipment is used as a partition, and the incinerator side input unit 11 in which the waste hopper 10 is located has a top view. A cover-type cover is provided so that the waste pit area 2 which is a decontamination area can be sealed.
[0009]
Next, various facilities other than the electrostatic precipitator 15 in the incinerator area 3 are disassembled in the incinerator area 3 which is sealed by closing the partition 17 of the incinerator side charging unit 11 and is charged into the incinerator side. The demolition member is sequentially transferred to the waste pit 4 in the waste pit area 2 which is a decontamination region using the waste crane 7 while opening and closing the partition 17 of the section 11. Then, the partition 17 between the platform-side charging unit 6 and the incinerator-side charging unit 11 is closed and sealed in the waste pit 4 in the decontamination area, and the decontaminated and cleaned demolition member is placed on the platform side. The partition 17 of the input unit 6 is opened and carried out from the platform 5 to the outside. The above operations are repeated to remove various facilities other than the electrostatic precipitator 15 (see FIG. 3).
[0010]
As described above, after removing the incineration equipment other than the electric dust collector 15 in the incinerator area 3, the lifting equipment 18 is installed in the incinerator area 3. In the illustrated example, a gantry 19 for the lifting equipment 18 is constructed, and the equipment is left in the lower part of the gantry 19 within a range that does not hinder the operation of the lifting equipment 18. Show. Then, the incinerator area 3 is hermetically sealed, and either the side casing or the ceiling casing of the electrostatic precipitator 15 or both are removed. Subsequently, the discharge electrode and the dust collection electrode are taken out from the electrostatic dust collection device 15 in which the casing is opened while operating the lifting device 18.
The discharged discharge electrode and the dust collecting electrode are arranged so that the garbage crane 7 is opened and closed while the partition 17 of the incinerator side charging unit 11 is opened and closed in the same manner as when various facilities other than the electric dust collecting device 15 are removed. It is sequentially transferred to the waste pit 4 in the decontamination area. Then, the discharge electrode and the dust collecting electrode are decontaminated and cleaned in the garbage pit 4 in a sealed state in which the partition 17 between the platform side charging unit 6 and the incinerator side charging unit 11 is closed. Thereafter, the decontaminated and cleaned discharge electrode and the dust collecting electrode are carried out of the platform 5 by opening the partition 17 of the platform side input section 6 (see FIG. 4). The casing of the electrostatic precipitator 15 is also disassembled, decontaminated, and washed in the same procedure and discharged to the outside.
After removing the facilities in the facility as described above, the entire building is decontaminated before being dismantled.
[0011]
The cost was estimated when the present invention was implemented. Assuming a new height 10 m × width 10 m × depth space 50,000 yen / m 2 of 30m as decontamination area and make a simple steel structure according to H-section steel, 50,000 yen / m 2 × 300 meters 2 = 1500 million in A yen is required. This requires equipment such as an overhead crane and a drainage tank, which costs about 30 million yen. When the present invention is implemented, not only can the cost required for this be reduced, but also wasteful resources can be avoided.
[0012]
【The invention's effect】
According to the present invention described above, the facility incineration space can be sealed inside the waste incineration facility itself, and the area that can be sealed off using the waste pit is defined as the decontamination region, and the facilities are dismantled. Since the dismantling member sent from the space side is decontaminated and cleaned, the facility can be dismantled without adding a new decontamination area to the waste incineration facility. In addition, since it is not necessary to add a new decontamination area when dismantling the waste incineration facility, it is possible to reduce costs and achieve excellent effects in practicality.
[Brief description of the drawings]
FIG. 1 is an explanatory view schematically showing an example of a waste incineration facility for implementing an example of a method for dismantling a waste incineration facility according to the present invention.
FIG. 2 is an explanatory view showing a state in which a partition is provided between the platform side charging unit and the incinerator side charging unit.
FIG. 3 is an explanatory view showing a state in which facilities other than the electric dust collector on the incinerator area side are removed.
FIG. 4 is an explanatory diagram showing electrode extraction, decontamination, and cleaning of the electrostatic precipitator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Waste incineration facility 2 ... Waste pit area 3 ... Incinerator area 4 ... Waste pit 5 ... Platform a ... Garbage truck 6 ... Platform side input part 7 ... Waste crane 8 ... Structure 9 ... Incinerator 10 ... Waste hopper DESCRIPTION OF SYMBOLS 11 ... Incinerator side insertion part 12 ... Ash pit 13 ... Ash feed mechanism 14 ... Gas cooling chamber 15 ... Electric dust collector 16 ... Chimney 17 ... Partition 18 ... Lifting equipment

Claims (1)

施設内が、プラットホーム側投入部を介して投入された廃棄物をごみピットで貯め受けるごみピットエリアと、前記廃棄物を焼却処理する焼却炉エリアとに区分され、ごみピットエリアと焼却炉エリアとの区分位置に設けられた焼却炉側投入部を介して廃棄物をごみピットエリアから焼却炉エリアにある焼却炉に送り込み、焼却炉にて廃棄物を焼却処分するとともに、前記焼却により生じる煙を焼却炉エリアにある電気集塵装置を介して煙処理したのちに煙突から排出する廃棄物焼却施設において、
ごみピット内の廃棄物を取り除いた後にごみピットエリアをダイオキシン類濃度が所定値未満となるまで清浄化して、このごみピットエリアを、外部につながるプラットホーム側投入部と焼却炉側投入部とに開閉する仕切りを設けて密閉可能な除染領域とするとともに、前記焼却炉側投入部の仕切りにより焼却炉エリアを密閉可能に設け、
焼却炉エリアにおける装置類を解体した解体部材を逐次、焼却炉側投入部を経て前記除染領域のごみピットに移送し、
除染領域に移送された解体部材を、密閉状態としたこの除染領域で除染、洗浄し、
除染、洗浄済みの解体部材を除染領域のプラットホーム側投入部から外部に搬出することを特徴とする廃棄物焼却施設の解体方法。
The facility is divided into a waste pit area where waste input through the platform side input section is stored in a waste pit, and an incinerator area where the waste is incinerated, and the waste pit area and the incinerator area Waste is sent from the waste pit area to the incinerator in the incinerator area through the incinerator side input section provided at the division position of the incinerator, and the incinerator disposes of the waste, and smoke generated by the incineration is In a waste incineration facility that discharges from the chimney after smoke treatment via an electric dust collector in the incinerator area,
After removing waste in the waste pit, clean the waste pit area until the dioxin concentration falls below the specified value, and open and close the waste pit area to the platform-side input section and the incinerator-side input section connected to the outside. A decontamination area that can be sealed by providing a partition to be provided, and an incinerator area can be hermetically sealed by a partition of the incinerator side input part,
The dismantling members dismantling the devices in the incinerator area are sequentially transferred to the debris pits in the decontamination region through the incinerator side input part,
The demolition member transferred to the decontamination area is decontaminated and washed in this decontamination area in a sealed state.
A dismantling method for a waste incineration facility, characterized in that a decontaminated and cleaned dismantling member is carried out from a platform side input section of a decontamination region.
JP2002132974A 2002-05-08 2002-05-08 Dismantling method of waste incineration facility Expired - Lifetime JP3845840B2 (en)

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