JP2001227732A - Waste incinerator - Google Patents

Waste incinerator

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Publication number
JP2001227732A
JP2001227732A JP2000036893A JP2000036893A JP2001227732A JP 2001227732 A JP2001227732 A JP 2001227732A JP 2000036893 A JP2000036893 A JP 2000036893A JP 2000036893 A JP2000036893 A JP 2000036893A JP 2001227732 A JP2001227732 A JP 2001227732A
Authority
JP
Japan
Prior art keywords
incineration
ash
grate
incineration residue
gas
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Withdrawn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
JP2000036893A
Other languages
Japanese (ja)
Inventor
Takuya Shinagawa
拓也 品川
Takashi Noto
隆 能登
Takashi Yokoyama
隆 横山
Michio Nagaseki
三千男 永関
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP2000036893A priority Critical patent/JP2001227732A/en
Publication of JP2001227732A publication Critical patent/JP2001227732A/en
Withdrawn legal-status Critical Current

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  • Gasification And Melting Of Waste (AREA)
  • Incineration Of Waste (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a waste incinerator capable of reducing organic substances such an unburned substances contained in incineration ash discharged from a fire grate type incinerator. SOLUTION: In the waste incinerator apparatus provided with a fire grate type incinerator, an incineration residue accumulation section 20 receiving incineration ash 31 discharged from an after burning fire grate 11c, after the burning fire grate 11c of the last stage to retain it is provided, and an incineration ash discharge means 22 is provided in the lower end of the incineration residue accumulation section 20 to form a transfer layer for the incineration ash. A gas inlet port 21 for blowing high temperature gas therein is provided in the incineration residue accumulation section 20 to discharge the ash after it has been reheated. The gas inlet port 21 is provided at the upper level than the middle position between the upper end of the incineration residue accumulation section 20 and the ash discharge means 22.

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】本発明は火格子式焼却炉を備
えた廃棄物焼却装置に関する。
The present invention relates to a waste incinerator equipped with a grate incinerator.

【0002】[0002]

【従来の技術】火格子式の廃棄物焼却炉は、装入された
廃棄物が火格子上を順次移送され、その間に廃棄物の燃
焼・灰化が行われるようになっており、例えば、図3に
示すように、乾燥段火格子11a、燃焼段火格子11
b、後燃焼段火格子11cよりなる3基の火格子が連設
された構成になっている。このような焼却炉10におい
ては、まず、廃棄物30が乾燥段火格子11a上へ装入
され、火格子の下から吹き込まれる燃焼用空気と炉内の
輻射熱によって乾燥されながら昇温して着火する。次い
で、燃焼段火格子11b上に移送されて燃焼し、さらに
燃焼段火格子11c上へ移送されて灰化し、焼却灰31
となって炉外へ排出される。
2. Description of the Related Art In a grate-type waste incinerator, charged waste is sequentially transferred on a grate, during which combustion and incineration of the waste are performed. As shown in FIG. 3, the drying stage grate 11a and the combustion stage grate 11
b, a configuration in which three grates consisting of a post-combustion stage grate 11c are connected in series. In such an incinerator 10, first, the waste 30 is charged onto the drying stage grate 11a, and the temperature is raised while being dried by the combustion air blown from under the grate and the radiant heat in the furnace, and the fire is ignited. I do. Next, the fuel is transferred to the combustion stage grate 11b and burned, and further transferred to the combustion stage grate 11c and incinerated.
And discharged out of the furnace.

【0003】一方、燃焼排ガスは廃棄物の乾燥・昇温時
及び初期の燃焼段階で生成したH2、CO、CH4 など
の可燃性ガスを含んでいるので、ガス混合部12で二次
燃焼処理された後、ボイラ13へ導入されて熱回収され
る。次いで、排ガスは除塵処理工程へ送られて除塵処理
された後、有害ガス除去処理工程へ送られ、塩化水素等
の酸性ガスの除去処理、窒素酸化物の除去処理、或いは
ダイオキシン類の除去処理などが施されて浄化され、煙
突から放散される。
On the other hand, the flue gas contains combustible gases such as H 2 , CO, and CH 4 generated during the drying and heating of the waste and in the initial combustion stage. After the treatment, it is introduced into the boiler 13 and heat is recovered. Next, the exhaust gas is sent to a dust removal process, where it is subjected to a dust removal process, and then sent to a harmful gas removal process, in which an acid gas such as hydrogen chloride is removed, a nitrogen oxide is removed, or a dioxin is removed. Is purified and released from the chimney.

【0004】[0004]

【発明が解決しようとする課題】ところで、火格子式焼
却炉から排出される焼却灰には、通常、1〜3%程度の
未燃分が含まれている。又、規制値に対しては遙かに微
量であるが、ダイオキシン類が含まれていることも判明
している。このため、これらの物質が焼却灰の埋め立て
処分の支障になったり、或いは焼却灰の有効利用を妨げ
たりすることが懸念される。
By the way, incineration ash discharged from a grate incinerator usually contains about 1 to 3% of unburned matter. In addition, it has been found that dioxins are contained although the amount is much smaller than the regulation value. For this reason, there is a concern that these substances may hinder landfill disposal of the incinerated ash or hinder the effective use of the incinerated ash.

【0005】本発明は、上記の問題点を解決し、火格子
式焼却炉から排出される焼却灰に含まれている未燃分な
どの有機物を低減するすることができる廃棄物焼却装置
を提供することを目的とする。
The present invention solves the above problems and provides a waste incinerator capable of reducing organic matter such as unburned matters contained in incineration ash discharged from a grate incinerator. The purpose is to do.

【0006】[0006]

【課題を解決するための手段】上記の課題は次の発明に
より解決される。第1の発明は、最後段の火格子の後
に、その最後段の火格子から排出される焼却灰を受け入
れて滞留させる焼却残渣滞留部が設けられると共に、こ
の焼却残渣滞留部の下端に焼却灰排出手段が設けられて
焼却灰の移動層が形成されるように構成され、前記焼却
残渣滞留部に高温ガスを吹き込むためのガス吹き込み口
が設けられて焼却灰が再加熱された後に排出されるよう
に構成され、前記ガス吹き込み口が焼却残渣滞留部の上
端と焼却灰排出手段との中間点より上方に設けられてい
ることを特徴としている。
The above object is achieved by the following invention. According to a first aspect of the present invention, an incineration residue accumulating portion for receiving and accumulating incineration ash discharged from the last grate is provided after the last grate, and an incineration ash is provided at a lower end of the incineration residue accumulating portion. A discharging means is provided to form a moving layer of the incinerated ash, and a gas blowing port for blowing a high-temperature gas into the incineration residue stagnation section is provided, and the incinerated ash is discharged after being reheated. The gas inlet is provided above an intermediate point between the upper end of the incineration residue retaining portion and the incineration ash discharging means.

【0007】第2の発明は、最後段の火格子の後に、そ
の最後段の火格子から排出される焼却灰を受け入れて滞
留させる焼却残渣滞留部が設けられると共に、この焼却
残渣滞留部の下端に焼却灰排出手段が設けられて焼却灰
の移動層が形成されるように構成され、前記焼却残渣滞
留部に高温ガスを吹き込むためのガス吹き込み口が設け
られて焼却灰が再加熱された後に排出されるように構成
され、前記焼却残渣滞留部のガス吹き込み口よりも下の
部位が縮径された形状になっていることを特徴としてい
る。
According to a second aspect of the invention, after the last grate, there is provided an incineration residue staying portion for receiving and accumulating incineration ash discharged from the last stage grate, and a lower end of the incineration residue staying portion. The incineration ash discharging means is provided to form a moving layer of the incineration ash, and after the incineration ash is reheated by providing a gas blowing port for blowing a high-temperature gas into the incineration residue retaining portion. It is configured to be discharged, and the portion of the incineration residue staying portion below the gas blowing port has a reduced diameter.

【0008】上記各発明における最後段の火格子とは、
必ずしも、図3に示すような階段式の火格子式焼却炉に
おける最後段の火格子に限定されるものではなく、廃棄
物を灰化する段階に配置された火格子を指すものとす
る。
[0008] In the above invention, the last grate is
The grate is not necessarily limited to the last grate in the step-type grate incinerator as shown in FIG. 3, but refers to the grate arranged at the stage of incineration of waste.

【0009】上記のように、本発明においては、火格子
から排出された焼却灰を受け入れる焼却残渣滞留部が設
けられており、その中に焼却灰を滞留させて再加熱し、
高温になった焼却灰を順次下降させて排出させるように
なっている。このため、焼却灰が焼却残渣滞留部内に滞
留しいる間に、焼却灰中の未燃分が燃焼し、或いはガス
体になって離脱してその含有量が著しく低減する。焼却
灰を加熱処理した排ガスは焼却炉内へ流入し、火格子上
の燃焼室で発生した燃焼排ガスと一緒に2次燃焼処理及
び熱回収処理され、次いで浄化処理されて放出される。
As described above, in the present invention, there is provided an incineration residue accumulating portion for receiving the incinerated ash discharged from the grate, in which the incinerated ash is accumulated and reheated.
The incinerated ash, which has become hot, is sequentially lowered and discharged. For this reason, while the incinerated ash stays in the incineration residue stagnation section, the unburned portion in the incinerated ash is burned or separated as a gaseous body, and the content thereof is significantly reduced. The exhaust gas obtained by heat-treating the incineration ash flows into the incinerator, is subjected to secondary combustion treatment and heat recovery treatment together with the combustion exhaust gas generated in the combustion chamber on the grate, and is then purified and released.

【0010】このようにして焼却残渣滞留部中へ高温ガ
スを吹き込む際に、加熱処理済みの排ガスが焼却残渣滞
留部の下部から炉外へ排出されないようにしなければな
らないが、本発明においては、焼却残渣滞留部の下部に
滞留している焼却灰の層がシール部の役目をするように
なっており、加熱処理済みの排ガスは上方に向かって流
れ、炉内へ送り込まれるようになっている。焼却残渣滞
留部の下部が焼却灰層によってシールされるようにする
ために、ガス吹き込み口が焼却残渣滞留部の上端と焼却
灰排出手段との中間点より上に位置するように配置され
ている。このため、高温ガスが吹き込まれる箇所より上
に堆積される焼却灰の層高よりも、ガス吹き込み箇所よ
り下に堆積される焼却灰の層高の方が十分に高くなるよ
うになっている。このように、焼却残渣滞留部の下部が
焼却灰層によってシールされるようにすれば、機械的な
シール機構を設ける必要がなく、装置の簡素化を図るこ
とができる。
[0010] When the high-temperature gas is blown into the incineration residue accumulating section in this manner, it is necessary to prevent the heat-treated exhaust gas from being discharged out of the furnace from the lower portion of the incineration residue accumulating section. The layer of incineration ash that has accumulated at the bottom of the incineration residue accumulation section serves as a seal section, and the heat-treated exhaust gas flows upward and is sent into the furnace. . In order for the lower part of the incineration residue stagnation section to be sealed by the incineration ash layer, the gas blowing port is arranged so as to be located above the middle point between the upper end of the incineration residue stagnation section and the incineration ash discharge means. . For this reason, the layer height of the incinerated ash deposited below the gas injection point is sufficiently higher than the layer height of the incinerated ash deposited above the point where the high-temperature gas is injected. In this way, if the lower part of the incineration residue stagnation section is sealed by the incineration ash layer, there is no need to provide a mechanical sealing mechanism, and the apparatus can be simplified.

【0011】又、焼却残渣滞留部のガス吹き込み口より
も下の部位を縮径し、ガス吹き込み口より上の部位より
も断面積が狭められた形状にしておけば、ガスの通気抵
抗が増加し、ガス吹き込み口より下の長さを短くするこ
とができ、焼却残渣滞留部全体の高さを低くすることが
できる。
[0011] Further, if the portion of the incineration residue stagnation section below the gas inlet is reduced in diameter to have a cross-sectional area smaller than that of the part above the gas inlet, the gas flow resistance increases. However, the length below the gas inlet can be shortened, and the height of the entire incineration residue stagnation section can be reduced.

【0012】[0012]

【発明の実施の形態】図1は本発明の実施の形態に係る
一例を示す概略の縦断面図である。図1において、図3
と同じ構成によるものについては、同一の符号を付し説
明を省略する。この実施の形態においては、最後段の火
格子である後燃焼段火格子11cの後に、その火格子か
ら排出される焼却灰31を受け入れて滞留させるための
焼却残渣滞留部20が設けられている。この焼却残渣滞
留部20は上部が開放されて焼却炉内と連通しており、
その下端には焼却灰排出手段22が設けられている。こ
のため、焼却残渣滞留部20に受け入れて滞留させてい
た焼却灰が順次抜き出され、焼却灰の移動層が形成され
るようになっている。又、焼却残渣滞留部20の中間部
分には、高温ガスを吹き込むためのガス吹き込み口21
が設けられており、後燃焼段火格子11cから受け入れ
た焼却灰31が再加熱されて高温に保持された後に排出
されるようになっている。そして、吹き込まれた高温ガ
スは上方へ流れ、焼却炉内へ送られる。
FIG. 1 is a schematic longitudinal sectional view showing an example according to an embodiment of the present invention. In FIG. 1, FIG.
Components having the same configuration as those described above are denoted by the same reference numerals and description thereof is omitted. In this embodiment, after the post-combustion stage grate 11c, which is the last grate, there is provided an incineration residue retention section 20 for receiving and retaining the incineration ash 31 discharged from the grate. . The incineration residue stagnation section 20 is open at the top and communicates with the inside of the incinerator.
At its lower end, an incineration ash discharging means 22 is provided. For this reason, the incinerated ash received and retained in the incineration residue retaining section 20 is sequentially extracted, and a moving layer of the incinerated ash is formed. A gas inlet 21 for blowing high-temperature gas is provided at an intermediate portion of the incineration residue retaining portion 20.
Is provided, and the incinerated ash 31 received from the post-combustion stage grate 11c is reheated and discharged after being kept at a high temperature. Then, the injected high-temperature gas flows upward and is sent into the incinerator.

【0013】ガス吹き込み口21は焼却残渣滞留部20
の中間部分に設けられるが、その配置に際しては、ガス
吹き込み口21が焼却残渣滞留部20の上端と焼却灰排
出手段22との中間点より上方になるように位置決めさ
れている。すなわち、ガス吹き込み口21と焼却灰排出
手段22の間の高さH2 が焼却残渣滞留部20全体の高
さH0 に対して1/2以上なっている。このため、焼却
灰の再加熱時には、焼却残渣滞留部20内に滞留してい
る焼却灰量の多少にかかわらず、常に、ガス吹き込み口
21より下に堆積される焼却灰の層高h2 がその上に堆
積される焼却灰の層高h1 よりも大きくなり、ガス吹き
込み口21より下の焼却灰層がシール部の機能を有して
いる。
The gas inlet 21 is provided at the incineration residue stagnation section 20.
In the arrangement, the gas inlet 21 is positioned such that the gas inlet 21 is located above the intermediate point between the upper end of the incineration residue stagnation section 20 and the incineration ash discharge means 22. That is, the height H 2 between the gas inlet 21 and the incineration ash discharge means 22 is 1 / or more of the height H 0 of the entire incineration residue stagnant portion 20. For this reason, at the time of reheating of the incinerated ash, the layer height h 2 of the incinerated ash deposited below the gas inlet 21 is always constant regardless of the amount of the incinerated ash retained in the incineration residue retaining section 20. its larger than the layer height h 1 of the ash to be deposited on, incineration ash layer below the gas blowing port 21 has the function of the sealing portion.

【0014】焼却残渣滞留部20による焼却灰の再加熱
処理に際し、ガス吹き込み口21より上に堆積する焼却
灰の層高h1 は少なくとも0.1m以上にする必要があ
り、又、焼却残渣滞留部20の全高は少なくとも1m以
上にすることを要する。
When the incineration ash is reheated by the incineration residue accumulation section 20, the layer height h 1 of the incineration ash deposited above the gas inlet 21 needs to be at least 0.1 m or more. The total height of the part 20 needs to be at least 1 m or more.

【0015】なお、焼却灰排出手段22としては、スク
リューコンベア、チェーンコンベアなどのコンベア類、
或いは押しだし排出を行うプッシャーなどを使用するこ
とができる。
The incineration ash discharging means 22 includes conveyors such as a screw conveyor and a chain conveyor.
Alternatively, a pusher for pushing out and discharging can be used.

【0016】焼却灰の加熱温度は300℃〜800℃程
度にするのがよい。焼却灰を300℃以上にすると、焼
却灰中の未燃分の一部がガス体になって離脱し、さらに
昇温すると、未燃分の燃焼が始まり、その含有量が減少
する。なお、300℃を超える程度の温度領域において
は、焼却灰中のダイオキシン類は分解されないが、気化
して焼却炉内へ流入し、火格子上の燃焼室で発生した燃
焼排ガスと一緒にガス混合部及び熱回収装置を通過した
後、排ガス処理工程へ送られ、除去される。焼却灰を9
00℃以上に加熱すると、焼却灰が焼結して固まり、そ
の排出が困難になると言う問題が起こる。又、あまり高
温にするよりも、加熱時間(滞留時間)を長くした方が
加熱エネルギーが節減されるので、焼却灰の加熱温度の
上限は800℃程度にするのがよい。
The heating temperature of the incinerated ash is preferably set at about 300 ° C. to 800 ° C. When the incinerated ash is heated to 300 ° C. or higher, a part of the unburned ash in the incinerated ash is released as a gaseous substance. In the temperature range exceeding 300 ° C., dioxins in the incineration ash are not decomposed, but vaporize and flow into the incinerator, where gas is mixed with the flue gas generated in the combustion chamber on the grate. After passing through the section and the heat recovery device, it is sent to the exhaust gas treatment step and removed. 9 incineration ash
When heated to 00 ° C. or higher, there is a problem that the incinerated ash sinters and hardens, making it difficult to discharge it. Further, the heating energy (saving time) is longer when the heating time (residence time) is set longer than when the temperature is too high.

【0017】ガス吹き込み口21から焼却残渣滞留部2
0内への高温ガスの吹き込みに際しては、その吹き込み
量を適量に調節する必要がある。適正なガス吹き込み量
は焼却残渣の性状によって異なる。高温ガスの吹き込み
量が多すぎると、焼却残渣滞留部20内に滞留している
焼却灰のうち細粒のものが流動化する。そして、粒径が
大きいものと粒径が小さいものに分離し、ガス吹き込み
口21より上方に細粒の焼却灰が蓄積したり、細粒の焼
却灰が焼却炉内へ飛散してしまったりする。
From the gas inlet 21, the incineration residue stagnation section 2
When blowing high-temperature gas into zero, it is necessary to adjust the blowing amount to an appropriate amount. The appropriate amount of gas to blow depends on the nature of the incineration residue. If the blowing amount of the high-temperature gas is too large, fine particles of the incineration ash retained in the incineration residue retaining section 20 are fluidized. And it separates into a thing with a large particle size and a thing with a small particle size, and fine incineration ash accumulates above the gas blowing port 21, or fine incineration ash scatters in an incinerator. .

【0018】図2は本発明の実施の形態に係る他の例を
示す概略の縦断面図である。図2において、図1又は図
3と同じ構成によるものについては、同一の符号を付し
説明を省略する。この実施の形態においては、焼却残渣
滞留部のガス吹き込み口21よりも下の部位23が縮径
された形状になっており、ガス吹き込み口21より上の
部位よりも断面積が狭められている。焼却残渣滞留部2
0の下部を縮径した形状にすると、ガスの通気抵抗が増
加するので、ガス吹き込み口より下の長さを短くしても
シール機能を果たすことができる。
FIG. 2 is a schematic longitudinal sectional view showing another example according to the embodiment of the present invention. 2, components having the same configuration as in FIG. 1 or FIG. 3 are denoted by the same reference numerals, and description thereof is omitted. In this embodiment, the portion 23 below the gas inlet 21 of the incineration residue stagnation portion has a reduced diameter, and has a smaller cross-sectional area than the portion above the gas inlet 21. . Incineration residue retention section 2
If the lower part of the 0 has a reduced diameter, the gas flow resistance increases, so that the sealing function can be achieved even if the length below the gas inlet is shortened.

【0019】[0019]

【実施例】図1に示す焼却残渣滞留部と同様の構成によ
る試験装置を製作し、この装置の焼却炉に都市ごみを装
入して焼却し、排出された焼却灰を再加熱する処理を行
った。この際に使用した焼却残渣滞留部は全高が3m
で、上端から1mの位置にガス吹き込み口を設け、下端
にスクリューコンベアを取り付けたものであった。そし
て、燃料燃焼バーナで発生させた約400℃の熱風を吹
き込んだ。熱風の吹き込み量は焼却残渣滞留部内の平均
単位断面積流速が0.01m/sec程度になるように
調整した。焼却灰の排出量はガス吹き込み口より上の部
分における焼却灰の滞留時間が10分程度になるように
した。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A test apparatus having the same configuration as the incineration residue stagnation section shown in FIG. 1 was manufactured. went. The total height of the incineration residue accumulation section used at this time was 3 m.
A gas inlet was provided at a position 1 m from the upper end, and a screw conveyor was attached at the lower end. Then, hot air of about 400 ° C. generated by the fuel combustion burner was blown. The amount of hot air blown was adjusted so that the average unit sectional area flow rate in the incineration residue retention section was about 0.01 m / sec. The amount of incinerated ash discharged was such that the residence time of the incinerated ash in the portion above the gas inlet was about 10 minutes.

【0020】排出された焼却灰を分析したところ、未燃
分は0.1%、ダイオキシン濃度は0.002ng−T
EQ/gであった。
Analysis of the discharged incinerated ash revealed that the unburned matter was 0.1% and the dioxin concentration was 0.002 ng-T
EQ / g.

【0021】[0021]

【発明の効果】本発明においては、最後段の火格子から
排出された焼却灰を受け入れて再加熱する焼却残渣滞留
部が設けられており、この焼却残渣滞留部の下端に設け
られた焼却灰排出手段により再加熱された焼却灰が排出
されるように構成されているので、焼却灰中の未燃分な
どの有機物が燃焼し、或いは離脱し、或いは分解してそ
の含有量が著しく減少する。このため、未燃分などの有
機物の含有量が極めて少ない焼却灰が排出される。
According to the present invention, there is provided an incineration residue accumulating portion for receiving and reheating incineration ash discharged from the last grate, and an incineration ash provided at a lower end of the incineration residue accumulating portion. Since the incinerated ash reheated by the discharging means is configured to be discharged, the organic matter such as unburned matter in the incinerated ash is burned, separated, or decomposed, and the content thereof is significantly reduced. . Therefore, incinerated ash having an extremely small content of organic matter such as unburned matter is discharged.

【0022】又、高温ガスの吹き込み口が焼却残渣滞留
部の上端と焼却灰排出手段との中間点より上方に設けら
れているので、吹き込み口より下に滞留する焼却灰の層
高が十分に確保され、焼却残渣滞留部の下部が焼却灰に
よってシールされるようになっている。このため、機械
的なシール機構を設ける必要がなく、装置の簡素化を図
ることができる。
Further, since the high-temperature gas blowing port is provided above the intermediate point between the upper end of the incineration residue retaining section and the incineration ash discharging means, the layer height of the incineration ash remaining below the blowing port is sufficiently high. It is ensured that the lower part of the incineration residue stagnation section is sealed with incineration ash. Therefore, there is no need to provide a mechanical seal mechanism, and the apparatus can be simplified.

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

【図1】本発明の実施の形態に係る一例を示す概略の縦
断面図である。
FIG. 1 is a schematic longitudinal sectional view showing an example according to an embodiment of the present invention.

【図2】本発明の実施の形態に係る他の例を示す概略の
縦断面図である。
FIG. 2 is a schematic longitudinal sectional view showing another example according to the embodiment of the present invention.

【図3】従来の火格子式焼却炉を備えた廃棄物焼却装置
を示す概略の縦断面図である。
FIG. 3 is a schematic longitudinal sectional view showing a waste incinerator equipped with a conventional grate incinerator.

【符号の説明】[Explanation of symbols]

10 火格子式焼却炉 11a 乾燥段火格子 11b 燃焼段火格子 11c 後燃焼段火格子 20 焼却残渣滞留部 21 高温ガスの吹き込み口 22 焼却灰排出手段 23 ガス吹き込み口よりも下の部位 30 廃棄物 31 焼却灰 DESCRIPTION OF SYMBOLS 10 Grate-type incinerator 11a Dry-stage grate 11b Combustion-stage grate 11c Post-combustion-stage grate 20 Incineration residue stagnation part 21 High-temperature gas injection port 22 Incineration ash discharge means 23 Parts below the gas injection port 30 Waste 31 incineration ash

───────────────────────────────────────────────────── フロントページの続き (72)発明者 横山 隆 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 永関 三千男 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 Fターム(参考) 3K061 AA01 AB01 AC01 AC20 CA07 EA01 HA05 HA17 HA23 HA29 3K065 AA01 AB01 AC01 AC20 HA01 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Yokoyama 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Kokan Co., Ltd. (72) Inventor Michio Nagaseki 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. F-term (reference) 3K061 AA01 AB01 AC01 AC20 CA07 EA01 HA05 HA17 HA23 HA29 3K065 AA01 AB01 AC01 AC20 HA01

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 火格子式焼却炉を備えた廃棄物焼却装置
において、最後段の火格子の後に、その最後段の火格子
から排出される焼却灰を受け入れて滞留させる焼却残渣
滞留部が設けられると共に、この焼却残渣滞留部の下端
に焼却灰排出手段が設けられて焼却灰の移動層が形成さ
れるように構成され、前記焼却残渣滞留部に高温ガスを
吹き込むためのガス吹き込み口が設けられて焼却灰が再
加熱された後に排出されるように構成され、前記ガス吹
き込み口が焼却残渣滞留部の上端と焼却灰排出手段との
中間点より上方に設けられていることを特徴とする廃棄
物焼却装置。
1. A waste incineration apparatus provided with a grate-type incinerator, wherein an incineration residue retaining portion for receiving and retaining incineration ash discharged from the last-stage grate is provided after the last-stage grate. At the same time, incineration ash discharging means is provided at the lower end of the incineration residue stagnation section to form a moving layer of incineration ash, and a gas blowing port for blowing high-temperature gas into the incineration residue stagnation section is provided. The incinerated ash is discharged after being reheated, wherein the gas blowing port is provided above an intermediate point between the upper end of the incineration residue stagnation section and the incinerated ash discharging means. Waste incineration equipment.
【請求項2】 火格子式焼却炉を備えた廃棄物焼却装置
において、最後段の火格子の後に、その最後段の火格子
から排出される焼却灰を受け入れて滞留させる焼却残渣
滞留部が設けられると共に、この焼却残渣滞留部の下端
に焼却灰排出手段が設けられて焼却灰の移動層が形成さ
れるように構成され、前記焼却残渣滞留部に高温ガスを
吹き込むためのガス吹き込み口が設けられて焼却灰が再
加熱された後に排出されるように構成され、前記焼却残
渣滞留部のガス吹き込み口よりも下の部位が縮径された
形状になっていることを特徴とする廃棄物焼却装置。
2. A waste incinerator provided with a grate-type incinerator, wherein an incineration residue retaining portion for receiving and retaining incineration ash discharged from the last stage grate is provided after the last stage grate. At the same time, incineration ash discharging means is provided at the lower end of the incineration residue stagnation section to form a moving layer of incineration ash, and a gas blowing port for blowing high-temperature gas into the incineration residue stagnation section is provided. Waste incineration, wherein the incineration ash is configured to be discharged after being reheated, and a portion of the incineration residue staying portion below a gas inlet is reduced in diameter. apparatus.
JP2000036893A 2000-02-15 2000-02-15 Waste incinerator Withdrawn JP2001227732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000036893A JP2001227732A (en) 2000-02-15 2000-02-15 Waste incinerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000036893A JP2001227732A (en) 2000-02-15 2000-02-15 Waste incinerator

Publications (1)

Publication Number Publication Date
JP2001227732A true JP2001227732A (en) 2001-08-24

Family

ID=18560867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000036893A Withdrawn JP2001227732A (en) 2000-02-15 2000-02-15 Waste incinerator

Country Status (1)

Country Link
JP (1) JP2001227732A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148488A (en) * 2013-04-08 2013-06-12 丁剑 Reversed U-shaped two-section type fire grate hazardous waste incinerator
CN106096297A (en) * 2016-06-21 2016-11-09 光大环保技术研究院(深圳)有限公司 A kind of calculate the method for First air flow bottom incineration furnace grate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148488A (en) * 2013-04-08 2013-06-12 丁剑 Reversed U-shaped two-section type fire grate hazardous waste incinerator
CN106096297A (en) * 2016-06-21 2016-11-09 光大环保技术研究院(深圳)有限公司 A kind of calculate the method for First air flow bottom incineration furnace grate

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