JPH07233921A - Refuse incinerator - Google Patents
Refuse incineratorInfo
- Publication number
- JPH07233921A JPH07233921A JP2501294A JP2501294A JPH07233921A JP H07233921 A JPH07233921 A JP H07233921A JP 2501294 A JP2501294 A JP 2501294A JP 2501294 A JP2501294 A JP 2501294A JP H07233921 A JPH07233921 A JP H07233921A
- Authority
- JP
- Japan
- Prior art keywords
- burn
- zone
- combustion
- air supply
- incinerated
- 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.)
- Pending
Links
Landscapes
- Incineration Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主燃焼室に、被焼却物
を乾燥させながら搬送する乾燥帯と、乾燥された被焼却
物を燃焼させながら搬送する燃焼帯と、被焼却物を灰化
させながら搬送する後燃焼帯を順に配して構成してある
ストーカ式のゴミ焼却炉に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main combustion chamber, in which a drying zone for transporting an incinerator while drying, a combustion zone for transporting a dried incinerator while burning, and an ash for burning the incinerator. The present invention relates to a stoker-type refuse incinerator that is configured by sequentially arranging post-combustion zones that are conveyed while being converted.
【０００２】[0002]
【従来の技術】主燃焼室での一次燃焼後の排ガスを完全
燃焼させるための二次燃焼用空気を、主燃焼室の上方空
間に設けられ二次燃焼室を構成する煙道を通過する排ガ
スに向けて噴出するノズルを煙道の入口部に設けてい
た。2. Description of the Related Art Secondary combustion air for completely burning exhaust gas after primary combustion in a main combustion chamber is exhaust gas passing through a flue which is provided in an upper space of the main combustion chamber and constitutes a secondary combustion chamber. There was a nozzle at the entrance of the flue.
【０００３】[0003]
【発明が解決しようとする課題】一般に、一酸化炭素を
含むガスを完全燃焼させるためには、数百度の高温で、
酸素を充分に供給攪拌して、しかも充分な燃焼時間を確
保することが必要であるが、上述した従来技術では、二
次燃焼室において、激しい上昇気流に対して酸素、即ち
燃焼用空気と排ガスを均一に攪拌させるのは難しく、燃
焼時間を充分に確保するには長大な煙道を確保する必要
があり、設備が大型で経済性に欠けるという欠点があっ
た。本発明の目的は、上述した従来欠点を解消する点に
ある。Generally, in order to completely burn a gas containing carbon monoxide, a high temperature of several hundred degrees is required.
It is necessary to sufficiently supply and agitate oxygen and to secure a sufficient combustion time. However, in the above-mentioned conventional technology, in the secondary combustion chamber, oxygen, that is, combustion air and exhaust gas is used against a strong updraft. It was difficult to stir the mixture uniformly, and it was necessary to secure a long flue to secure a sufficient combustion time, and there was a drawback that the equipment was large and economically inefficient. An object of the present invention is to eliminate the above-mentioned conventional drawbacks.
【０００４】[0004]
【課題を解決するための手段】この目的を達成するため
本発明によるゴミ焼却炉の特徴構成は、被焼却物の搬送
方向に沿って上流側及び下流側から、前記燃焼帯上の炎
の上部先端近傍に向けて二次燃焼用空気を供給する二次
燃焼用空気供給機構を設けてある点にある。上述の構成
において、前記被焼却物の燃えきり点を検出する燃えき
り点検出手段を設けて、その燃えきり点検出手段による
検出結果に基づいて燃えきり点が所定範囲に入るよう
に、前記二次燃焼用空気供給機構により前記上流側及び
下流側から供給される空気量を各別に調整する空気供給
量調整手段を設けてあることが好ましい。In order to achieve this object, the characteristic constitution of the refuse incinerator according to the present invention is that the upper part of the flame on the combustion zone is from the upstream side and the downstream side along the conveying direction of the incineration object. The point is that a secondary combustion air supply mechanism for supplying secondary combustion air toward the vicinity of the tip is provided. In the above-mentioned configuration, a burn-out point detecting means for detecting the burn-out point of the incineration object is provided, and the burn-out point falls within a predetermined range based on the detection result by the burn-out point detecting means. It is preferable to provide air supply amount adjusting means for individually adjusting the amount of air supplied from the upstream side and the downstream side by the secondary combustion air supply mechanism.
【０００５】[0005]
【作用】二次燃焼用空気供給機構により、二次燃焼用空
気が被焼却物の搬送方向に沿って上流側及び下流側か
ら、前記燃焼帯上の炎の上部先端近傍に向けて供給され
る結果、煙道に排ガスが収束され激しい上昇気流となる
前に、一酸化炭素が分散された状態で燃焼用空気と攪拌
することができるので、一酸化炭素と酸素とが充分に攪
拌される。そして、その攪拌は、排ガスが二次燃焼室を
構成する煙道に導かれる前に行われるので、二次燃焼室
での燃焼時間が充分に確保される。With the secondary combustion air supply mechanism, the secondary combustion air is supplied from the upstream side and the downstream side in the conveying direction of the incineration object toward the vicinity of the upper tip of the flame on the combustion zone. As a result, the carbon monoxide can be agitated with the combustion air in a dispersed state before the exhaust gas is converged on the flue and becomes a vigorous ascending airflow, so that the carbon monoxide and oxygen are sufficiently agitated. Since the stirring is performed before the exhaust gas is guided to the flue that constitutes the secondary combustion chamber, the combustion time in the secondary combustion chamber is sufficiently secured.
【０００６】又、上述のように構成すれば、後燃焼帯で
の未燃焼ゴミの発生を回避するための燃えきり点（燃焼
帯上で気体燃焼が収まり固体燃焼のみに移行する位置を
いう）の位置を、前記二次燃焼用空気供給機構により前
記上流側及び下流側から供給される空気量を調整するこ
とにより調整する。例えば、燃えきり点が下流側に移行
して未燃焼ごみが発生するおそれのあるときには、空気
供給量調整手段により上流側の燃焼空気を減少させ、か
つ、下流側からの燃焼用空気の供給量を増加させて上流
側の被焼却物に高温ガスを押しつけて上流側での燃焼を
促進させて燃えきり点を上流側に移行させ、燃えきり点
が上流側に移行して未燃焼ごみが発生するおそれのない
ものの燃焼帯が有効に利用されていない場合には、空気
供給量調整手段により下流側からの燃焼用空気量を減少
させ、かつ、上流側からの燃焼用空気の供給量を増加さ
せて燃えきり点を下流側に移行させるのである。Further, if constituted as described above, the burn-out point for avoiding the generation of unburned dust in the post-combustion zone (refers to the position where the gas combustion is stopped and only the solid combustion is transferred on the combustion zone). Position is adjusted by adjusting the amount of air supplied from the upstream side and the downstream side by the secondary combustion air supply mechanism. For example, when there is a possibility that unburned dust will be generated due to the burn-out point moving to the downstream side, the combustion air on the upstream side is reduced by the air supply amount adjusting means, and the amount of combustion air supplied from the downstream side. Is increased to push the high temperature gas against the incineration object on the upstream side to promote combustion on the upstream side to move the burn-out point to the upstream side, and the burn-up point moves to the upstream side to generate unburned dust. However, if the combustion zone is not effectively used, the amount of combustion air from the downstream side is reduced and the amount of combustion air from the upstream side is increased by the air supply amount adjustment means. Then, the burn-out point is shifted to the downstream side.
【０００７】[0007]
【発明の効果】本発明によれば、煙道を長大に構成せず
とも、一酸化炭素と酸素とが充分に攪拌された状態で充
分な燃焼時間が確保できることとなり、排ガスの完全燃
焼が達成され、排ガス中の一酸化炭素含有量と相関のあ
るダイオキシンの発生量をも低減できるゴミ焼却炉を提
供できるようになった。EFFECTS OF THE INVENTION According to the present invention, a sufficient combustion time can be secured in a state where carbon monoxide and oxygen are sufficiently agitated without constructing a long flue, and complete combustion of exhaust gas is achieved. As a result, it has become possible to provide a refuse incinerator that can reduce the amount of dioxin generated, which is correlated with the carbon monoxide content in exhaust gas.
【０００８】さらには、空気供給量調整手段により燃え
きり点の調整を行いうるので、未燃焼ゴミの発生を回避
しながらも焼却効率を向上できるゴミ焼却炉を提供でき
るようになった。Furthermore, since the burn-out point can be adjusted by the air supply amount adjusting means, it has become possible to provide a refuse incinerator which can improve the incineration efficiency while avoiding the generation of unburned dust.
【０００９】[0009]
【実施例】以下に実施例を説明する。都市ゴミ用の焼却
炉は、図２に示すように、ホッパ２に投入された被焼却
物（都市ゴミ等）をその下部に設けたプッシャ１の往復
駆動により主燃焼室３に搬送し、主燃焼室３で焼却され
た灰を灰ピット４に回収するように構成してある。EXAMPLES Examples will be described below. As shown in FIG. 2, the incinerator for municipal waste conveys the materials to be incinerated (such as municipal waste) thrown into the hopper 2 to the main combustion chamber 3 by the reciprocating drive of the pusher 1 provided below the main combustion chamber 3. The ash incinerated in the combustion chamber 3 is collected in the ash pit 4.
【００１０】主燃焼室１は、被焼却物を乾燥させ着火点
近傍温度まで加熱する乾燥帯Ａと、乾燥された被焼却物
を燃焼させる燃焼帯Ｂと、被焼却物を灰化させる後燃焼
帯Ｃを上方から下方に段階的に配置し、それらの下方か
ら一次燃焼用空気を供給する空気供給手段１２を備えて
構成してある。乾燥帯Ａ、燃焼帯Ｂ、後燃焼帯Ｃは、そ
の配置方向に固定の火格子と可動の火格子とを交互に配
置してそれら火格子の前記配置方向への相対移動により
ゴミを攪拌搬送するストーカ式の搬送手段５で構成して
ある。さらに、プッシャ１や搬送手段５の搬送速度、或
いは空気供給手段１２からの供給量を調整して安定的に
燃焼させるコンピュータ等でなる燃焼制御手段（図示せ
ず）を設けてある。The main combustion chamber 1 has a drying zone A for drying the incineration object and heating it to a temperature near the ignition point, a combustion zone B for burning the dried incineration object, and a post-combustion zone for ashing the incineration object. C is arranged stepwise from the upper side to the lower side, and air supply means 12 for supplying the primary combustion air from the lower side is provided. In the dry zone A, the combustion zone B, and the post-combustion zone C, fixed grate and movable grate are alternately arranged in the arrangement direction, and the relative movement of the grate in the arrangement direction stirs and conveys the dust. It is composed of a stoker type conveying means 5. Further, combustion control means (not shown), which is a computer or the like, is provided for adjusting the transfer speed of the pusher 1 or the transfer means 5 or the supply amount from the air supply means 12 for stable combustion.
【００１１】主燃焼室３の上部であって、燃焼帯Ｂの上
方空間には、一次燃焼後の排ガスを完全燃焼させる二次
燃焼室を構成する煙道１３、その下流側に廃熱ボイラ９
を設けてあり、排ガスは、排ガス中の熱エネルギィが廃
熱ボイラ９により蒸気の形で取り出されて発電機１０に
供された後に、電気集塵機等からなる排ガス処理設備１
１によりばいじんや有害ガスが除去されて煙突から排気
される。In the space above the main combustion chamber 3 and above the combustion zone B, there is a flue 13 that constitutes a secondary combustion chamber that completely burns the exhaust gas after primary combustion, and the waste heat boiler 9 is located downstream thereof.
After the heat energy in the exhaust gas is taken out in the form of steam by the waste heat boiler 9 and supplied to the generator 10, the exhaust gas treatment facility 1 including an electric dust collector and the like is provided.
1 removes dust and harmful gases and exhausts from the chimney.
【００１２】主燃焼室３の煙道１３を挟んだ上部壁面３
には、燃焼帯Ｂ上の炎の上部先端近傍に向けて二次燃焼
用空気を供給する複数のノズルでなる二次燃焼用空気供
給機構１４Ａ，１４Ｂを設けてあり、煙道１３に排ガス
が収束され激しい上昇気流となる前に、一酸化炭素が分
散された状態で二次燃焼用空気と攪拌混合する。さら
に、二次燃焼用空気供給機構１４Ａ，１４Ｂによる二次
燃焼用空気の供給量を、被焼却物の搬送方向に沿って上
流側及び下流側から各別に調整するブロワファンとダン
パ、そしてダンパの開度を制御する制御回路でなる空気
供給量調整手段１５Ａ，１５Ｂを設けてある。Upper wall surface 3 of main combustion chamber 3 with flue 13 in between
Is provided with secondary combustion air supply mechanisms 14A and 14B including a plurality of nozzles for supplying the secondary combustion air toward the vicinity of the upper tip of the flame on the combustion zone B. Before being converged into a violent updraft, the carbon monoxide is agitated and mixed with the secondary combustion air in a dispersed state. Further, the blower fan and the damper for adjusting the supply amount of the secondary combustion air by the secondary combustion air supply mechanisms 14A and 14B from the upstream side and the downstream side, respectively, along the conveyance direction of the incineration object, and the damper. Air supply amount adjusting means 15A and 15B which are control circuits for controlling the opening are provided.
【００１３】主燃焼室３の側壁上方には、被焼却物の搬
送方向に沿って複数の光センサを取り付けて、それらの
検出光量から燃焼帯Ｂにおける被焼却物の燃えきり点を
検出する燃えきり点検出手段１６を構成してある。空気
供給量調整手段１５Ａ，１５Ｂは、燃えきり点検出手段
１６により検出された燃えきり点が下流側に移行して未
燃焼ごみが発生するおそれのあるときには、空気供給量
調整手段により上流側からの燃焼用空気量を減少させ、
かつ、下流側からの燃焼用空気の供給量を増加させて上
流側での被焼却物の燃焼を促進させて燃えきり点を迅速
に上流側に移行させ、燃えきり点が上流側に移行して未
燃焼ごみが発生するおそれのないものの燃焼帯が有効に
利用されていない場合には、空気供給量調整手段により
下流側からの燃焼用空気量を減少させ、かつ、上流側か
らの燃焼用空気の供給量を増加させて燃えきり点を迅速
に下流側に移行させる。A plurality of optical sensors are attached above the side wall of the main combustion chamber 3 along the conveying direction of the incineration object, and the burn-out point for detecting the burn-out point of the incineration object in the combustion zone B is detected from the detected light amounts thereof. The cut point detecting means 16 is configured. When the burn-out point detected by the burn-out point detecting means 16 moves to the downstream side and unburned dust is likely to be generated, the air supply amount adjusting means 15A and 15B are operated from the upstream side by the air supply amount adjusting means. The amount of combustion air of
In addition, the amount of combustion air supplied from the downstream side is increased to promote combustion of the incineration material on the upstream side to quickly move the burnout point to the upstream side, and the burnout point moves to the upstream side. However, if the combustion zone is not effectively used, the amount of combustion air from the downstream side is reduced by the air supply amount adjusting means, and the amount of combustion air from the upstream side is reduced. The amount of air supply is increased to quickly move the burn-out point to the downstream side.
【００１４】又、燃焼制御手段は、空気供給量調整手段
１５Ａ，１５Ｂによる調整状態に応じて搬送手段５によ
る被焼却物の搬送速度の補正等を行い燃焼状態を安定化
する。例えば、空気供給量調整手段により上流側からの
燃焼空気量を減少させ、かつ、下流側からの燃焼用空気
の供給量を増加させて上流側での被焼却物の燃焼を促進
させて、燃えきり点を上流側に移行させる場合には、搬
送速度を低下させ、空気供給量調整手段により下流側か
らの燃焼空気量を減少させ、かつ、上流側からの燃焼用
空気の供給量を増加させて燃えきり点を下流側に移行さ
せる場合には、搬送速度を上げるといった具合である。Further, the combustion control means stabilizes the combustion state by correcting the transport speed of the incineration material by the transport means 5 according to the adjustment state by the air supply amount adjusting means 15A and 15B. For example, the amount of combustion air from the upstream side is reduced by the air supply amount adjusting means, and the amount of combustion air supplied from the downstream side is increased to promote the combustion of the incineration object on the upstream side to burn. When moving the cut-off point to the upstream side, the conveying speed is reduced, the amount of combustion air from the downstream side is reduced by the air supply amount adjusting means, and the amount of combustion air supplied from the upstream side is increased. When moving the burn-out point to the downstream side, the transport speed is increased.
【００１５】以下に別実施例を説明する。先の実施例で
は、二次燃焼用空気供給機構１４Ａ，１４Ｂを複数のノ
ズルで構成したものを説明したが、ノズルの数、設置角
度等は炉の形状に応じて適宜設定することができる。
又、二次燃焼用空気供給機構１４Ａ，１４Ｂとしては上
述の構成に限定するものではなく、図２に示すように、
主燃焼室３の煙道１３を挟んだ上部壁面３に、例えば燃
焼帯Ｂ等の幅方向に平行なスリットＳを形成したもので
あってもよい。Another embodiment will be described below. In the above embodiment, the secondary combustion air supply mechanism 14A, 14B has been described with a plurality of nozzles, but the number of nozzles, the installation angle, etc. can be appropriately set according to the shape of the furnace.
Further, the secondary combustion air supply mechanisms 14A and 14B are not limited to the above-mentioned configuration, but as shown in FIG.
For example, slits S parallel to the width direction of the combustion zone B may be formed on the upper wall surface 3 that sandwiches the flue 13 of the main combustion chamber 3.
【００１６】先の実施例では、二次燃焼用空気について
特に限定していないが、二次燃焼用空気としては、外気
を常温のままで供給してもよいし、図３に示すように、
主燃焼室３の側壁や上壁に沿った供給路１７を介して加
熱して供給してもよい。この場合には、二次燃焼のため
の排ガスの温度低下を回避して、良好な状態で二次燃焼
できる。In the above embodiment, the secondary combustion air is not particularly limited, but as the secondary combustion air, outside air may be supplied at room temperature, or as shown in FIG.
You may heat and supply via the supply path 17 along the side wall and upper wall of the main combustion chamber 3. In this case, the secondary combustion can be performed in a good state by avoiding the temperature decrease of the exhaust gas for the secondary combustion.
【００１７】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構成に限定するものではない。It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.
【図１】ゴミ焼却炉の概略構成図[Fig. 1] Schematic diagram of garbage incinerator
【図２】別実施例を示す要部の正面図FIG. 2 is a front view of a main part showing another embodiment.
【図３】別実施例を示す要部の断面図FIG. 3 is a sectional view of a main part showing another embodiment.
３ 主燃焼室 １４Ａ，１４Ｂ 二次燃焼用空気供給機構 Ａ 乾燥帯 Ｂ 燃焼帯 Ｃ 後燃焼帯 3 Main combustion chambers 14A, 14B Secondary combustion air supply mechanism A Dry zone B Combustion zone C Post-combustion zone
Claims (2)
ながら搬送する乾燥帯（Ａ）と、乾燥された被焼却物を
燃焼させながら搬送する燃焼帯（Ｂ）と、被焼却物を灰
化させながら搬送する後燃焼帯（Ｃ）を順に配して構成
してあるストーカ式のゴミ焼却炉であって、 被焼却物の搬送方向に沿って上流側及び下流側から、前
記燃焼帯（Ｂ）上の炎の上部先端近傍に向けて二次燃焼
用空気を供給する二次燃焼用空気供給機構（１４Ａ),
（１４Ｂ）を設けてあるゴミ焼却炉。1. A drying zone (A) for transporting an incineration object to a main combustion chamber (3) while drying, a combustion zone (B) for transporting a dried incineration object while burning, and an incineration target. A stoker-type waste incinerator configured by sequentially arranging a post-combustion zone (C) for transporting while incinerating an object, the upstream side and the downstream side along the transportation direction of the incinerated object, A secondary combustion air supply mechanism (14A) for supplying secondary combustion air toward the vicinity of the upper tip of the flame on the combustion zone (B),
Garbage incinerator equipped with (14B).
えきり点検出手段（１６）を設けて、その燃えきり点検
出手段（１６）による検出結果に基づいて燃えきり点が
所定範囲に入るように、前記二次燃焼用空気供給機構
（１４Ａ),（１４Ｂ）により前記上流側及び下流側から
供給される空気量を各別に調整する空気供給量調整手段
（１５Ａ),（１５Ｂ）を設けてある請求項１記載のゴミ
焼却炉。2. A burn-out point detection means (16) for detecting the burn-up point of the incineration object is provided, and the burn-up point falls within a predetermined range based on the detection result by the burn-up point detection means (16). In order to enter, air supply amount adjusting means (15A), (15B) for individually adjusting the amount of air supplied from the upstream side and the downstream side by the secondary combustion air supply mechanisms (14A), (14B) are provided. The refuse incinerator according to claim 1, which is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2501294A JPH07233921A (en) | 1994-02-23 | 1994-02-23 | Refuse incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2501294A JPH07233921A (en) | 1994-02-23 | 1994-02-23 | Refuse incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07233921A true JPH07233921A (en) | 1995-09-05 |
Family
ID=12154011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2501294A Pending JPH07233921A (en) | 1994-02-23 | 1994-02-23 | Refuse incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07233921A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015187514A (en) * | 2014-03-26 | 2015-10-29 | Ｊｆｅエンジニアリング株式会社 | waste incinerator and waste incineration method |
| CN112384736A (en) * | 2018-10-05 | 2021-02-19 | 三菱重工业株式会社 | Charging type incineration equipment and incineration method of incinerated object |
| JP2022152687A (en) * | 2021-03-29 | 2022-10-12 | 三菱重工業株式会社 | Combustion furnace and control method of combustion furnace |
-
1994
- 1994-02-23 JP JP2501294A patent/JPH07233921A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015187514A (en) * | 2014-03-26 | 2015-10-29 | Ｊｆｅエンジニアリング株式会社 | waste incinerator and waste incineration method |
| CN112384736A (en) * | 2018-10-05 | 2021-02-19 | 三菱重工业株式会社 | Charging type incineration equipment and incineration method of incinerated object |
| CN112384736B (en) * | 2018-10-05 | 2023-04-11 | 三菱重工业株式会社 | Charging type incineration equipment and incineration method of incinerated object |
| JP2022152687A (en) * | 2021-03-29 | 2022-10-12 | 三菱重工業株式会社 | Combustion furnace and control method of combustion furnace |
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