JP3534562B2 - Combustion control method and combustion control device - Google Patents
Combustion control method and combustion control deviceInfo
- Publication number
- JP3534562B2 JP3534562B2 JP04340397A JP4340397A JP3534562B2 JP 3534562 B2 JP3534562 B2 JP 3534562B2 JP 04340397 A JP04340397 A JP 04340397A JP 4340397 A JP4340397 A JP 4340397A JP 3534562 B2 JP3534562 B2 JP 3534562B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- post
- zone
- area
- combustion zone
- 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.)
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- Control Of Combustion (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、燃焼制御方法およ
び燃焼制御装置に関し、より具体的には、主燃焼帯と後
燃焼帯を備えた焼却炉の燃焼制御方法および燃焼制御装
置に関する。TECHNICAL FIELD The present invention relates to a combustion control method and a combustion control device, and more particularly to a combustion control method and a combustion control device for an incinerator having a main combustion zone and a post combustion zone.
【０００２】[0002]
【従来の技術】従来、この種の燃焼制御としては、後燃
焼帯に炎の存在が認められた場合には、後燃焼帯におけ
る未灰化の焼却対象物の燃焼を促進して、灰化をほぼ完
全に進ませるために、後燃焼帯のストーカ速度を通常値
よりも下げる、あるいは、後燃焼帯に対する空気供給量
を増やすなどの操作を行うものが知られていた。2. Description of the Related Art Conventionally, as a combustion control of this type, when the presence of a flame in the post-combustion zone, the combustion of the unashed incineration object in the post-combustion zone is promoted to ash. It has been known that the stalker speed in the afterburning zone is lowered below a normal value or the air supply amount to the afterburning zone is increased in order to almost completely advance the above.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上述した従来
の燃焼制御では、後燃焼帯のストーカ速度を通常値より
も下げたり、後燃焼帯に対する空気供給量を増やしたり
したものの、後燃焼帯内の炎の規模が実は予想外に小さ
かったために、結果的に過剰量の空気を供給したことに
なり、冷却作用により炉内燃焼温度が低下する、あるい
は逆に、異常に高温燃焼してＮＯｘ発生量が増えるとい
った支障が生じる場合があった。本発明の目的は、上に
例示した従来構成の燃焼制御に見られる上記欠点に鑑
み、後燃焼帯における焼却対象物の灰化をほぼ完全に進
ませることが可能でありながら、しかも、結果的に過剰
量の空気を供給して、炉が冷却される、ＮＯｘ発生量が
増えるといった支障が起き難い燃焼制御方法および燃焼
制御装置を提供することにある。However, in the above-mentioned conventional combustion control, although the stalker speed in the afterburning zone is lowered below the normal value or the air supply amount to the afterburning zone is increased, Since the scale of the flame was actually unexpectedly small, an excessive amount of air was eventually supplied, and the combustion temperature in the furnace decreased due to the cooling action, or conversely, abnormally high temperature combustion resulted in NOx generation. In some cases, problems such as an increase in the amount occurred. In view of the above drawbacks found in the combustion control of the conventional configuration illustrated above, the object of the present invention is to achieve almost complete ashing of the incineration target in the post combustion zone, and yet An object of the present invention is to provide a combustion control method and a combustion control device in which an excessive amount of air is supplied to the furnace to prevent the trouble such as cooling of the furnace and increase of NOx generation amount.
【０００４】[0004]
【課題を解決するための手段】〈１〉上記目的を達成す
るために、本発明の請求項１に記載された燃焼制御方法
では、後燃焼帯における炎の状態をカラー画像データと
して入力する撮像手段を用意し、前記撮像手段によって
得られる前記カラー画像データを赤色（Ｒ）緑色（Ｇ）
青色（Ｂ）の各色成分に分解し、緑色（Ｇ）成分の強度
が所定の閾値を超える画素に基づいて、前記後燃焼帯の
炎領域の面積を演算し、前記後燃焼帯の前記炎領域にお
ける青色（Ｂ）成分の強度の緑色（Ｇ）成分の強度に対
する比率が所定の閾値を超える画素に基づいて、前記後
燃焼帯の高温炎領域の面積を演算し、さらに、前記後燃
焼帯の前記高温炎領域の面積の前記炎領域の面積に対す
る比に基づいて、燃焼強度を演算し、前記炎領域の面積
が設定値を超えると後燃焼帯のストーカ速度を通常値よ
りも下げ、前記後燃焼帯のストーカ速度を前記通常値よ
りも下げてから所定の時間インターバルが経過した時点
で、前記燃焼強度が設定値を超えていれば、後燃焼帯へ
の空気供給量を通常値よりも増加することを特徴構成と
している。<1> In order to achieve the above object, in the combustion control method according to claim 1 of the present invention, an image pickup in which the state of the flame in the post combustion zone is input as color image data Means for preparing the color image data obtained by the image pickup means to be red (R) green (G)
Decomposed into each color component of blue (B), the intensity of the green (G) component based on the pixel exceeding the predetermined threshold value, and calculating the area of the flame region of the post-combustion zone, the flame of the post-combustion zone In the area
The intensity of the blue (B) component against the intensity of the green (G) component
Based on the pixels whose ratio exceeds a predetermined threshold,
Calculate the area of the high temperature flame region of the combustion zone, and
The area of the high temperature flame region of the zone to the area of the flame region
Based on the ratio, the combustion intensity is calculated, and when the area of the flame region exceeds the set value, the stalker speed in the afterburning zone is lowered below the normal value, and the stalker speed in the afterburning zone is set to the above normal value.
When the specified time interval has elapsed since the
Then, if the combustion intensity exceeds the set value, go to the post combustion zone.
The feature is that the air supply amount of is increased from a normal value .
【０００５】〔発明の効果〕上記の特徴構成のために、
本発明の請求項１に記載された燃焼制御方法では、後燃
焼帯の炎領域の面積が設定値を超えた場合に始めて後燃
焼帯における燃焼の促進の操作に入ることになり、しか
も、後燃焼帯の炎領域の面積が設定値を超えたという判
断に基づいて行う後燃焼帯における燃焼の促進を、後燃
焼帯のストーカ速度を通常値よりも下げて燃焼時間を確
保するという手段によって行い、空気供給量を積極的に
増加させるという手段によらないので、前記設定値を適
切に設定しておけば、後燃焼帯に過剰量の空気が供給さ
れて炉が冷却される、あるいはＮＯｘ発生量が増えると
いった支障が起き難いという特有の効果が生じる。[Advantages of the Invention] Due to the above-mentioned characteristic configuration,
In the combustion control method according to the first aspect of the present invention, the operation of promoting combustion in the post combustion zone is started only when the area of the flame region in the post combustion zone exceeds the set value, and The combustion in the post-combustion zone is promoted based on the judgment that the area of the flame region in the combustion zone exceeds the set value, by means of lowering the stoker speed in the post-combustion zone below the normal value to secure the combustion time. However, since it does not depend on the means of positively increasing the air supply amount, if the set value is appropriately set, an excessive amount of air is supplied to the post combustion zone to cool the furnace or generate NOx. The unique effect is that it is difficult for problems such as an increase in the amount to occur.
【０００６】さらに、燃焼強度が設定値を超えている
と、（後燃焼帯での灰化が目下進行中であると判断し
て、）後燃焼帯への空気供給量を通常値よりも増加する
ので、燃焼を促進して迅速に灰化することができ、結果
的に後燃焼帯での灰化をほぼ完全に行うことができて都
合が良い。 Furthermore, the combustion intensity has exceeded the set value, (it is determined that the ash of a post combustion zone is currently in progress,) than the normal value of air supply to the post-combustion zone To increase
Therefore, it is convenient that the combustion can be promoted and the ashing can be performed quickly, and as a result, the ashing in the post combustion zone can be performed almost completely.
【０００７】〈２〉上記目的を達成するために、本発明
の請求項４に記載された燃焼制御装置では、後燃焼帯に
おける炎の状態をカラー画像データとして入力する撮像
手段、前記撮像手段によって得られる前記カラー画像デ
ータを赤色（Ｒ）緑色（Ｇ）青色（Ｂ）の各色成分に分
解する分解手段、前記分解手段によって得られる緑色
（Ｇ）成分の強度が設定値を超える画素で定義される後
燃焼帯の炎領域の面積を演算して結果を設定値と比較す
る面積比較手段、及び、前記後燃焼帯の前記炎領域にお
ける青色（Ｂ）成分の強度の緑色（Ｇ）成分の強度に対
する比率が所定の閾値を超える画素で前記後燃焼帯の高
温炎領域の面積を演算し、前記後燃焼帯における前記高
温炎領域の前記炎領域に対する面積比で表される燃焼強
度を演算して結果を設定値と比較する燃焼強度比較手段
を備え、さらに、前記炎領域の面積が設定値を超えると
後燃焼帯のストーカ速度を通常値よりも下げ、前記後燃
焼帯のストーカ速度を前記通常値よりも下げてから所定
の時間インターバルが経過した時点で、前記燃焼強度が
設定値を超えていれば、後燃焼帯への空気供給量を通常
値よりも増加する操作手段を有することを特徴構成とし
ている。[0007] To achieve <2> above objects, the combustion control apparatus according to claim 4 of the present invention, an imaging means for inputting the state of the flame in the post-combustion zone as a color image data, by said image pickup means the resulting color image data of red (R) green (G) decomposing means for decomposing the color components of blue (B), the intensity of the green component (G) obtained by said decomposing means is defined by a pixel exceeding the set value After
Calculate the area of the flame zone in the combustion zone and compare the result with the set value
Area comparison means and the flame region of the post combustion zone.
The intensity of the blue (B) component against the intensity of the green (G) component
Pixels whose ratio exceeds a predetermined threshold
The area of the warm flame region is calculated, and the high flame in the post combustion zone is calculated.
Combustion strength expressed by the area ratio of the warm flame region to the flame region
Combustion intensity comparison means that calculates the degree and compares the result with the set value
Further, when the area of the flame region exceeds a set value, the stalker speed in the afterburning zone is lowered below the normal value,
Set the stoker speed of the burning zone below the normal value before
When the time interval of
If it exceeds the set value, the air supply amount to the post combustion zone will be normal.
It is characterized by having an operating means that increases more than the value .
【０００８】〔発明の効果〕
上記の特徴構成のために、本発明の請求項４に記載され
た燃焼制御装置では、後燃焼帯の炎領域の面積が設定値
を超えた場合に始めて後燃焼帯における燃焼の促進の操
作に入ることになり、しかも、後燃焼帯の炎領域の面積
が設定値を超えたという判断に基づいて行う後燃焼帯に
おける燃焼の促進を、後燃焼帯のストーカ速度を通常値
よりも下げて燃焼時間を確保するという手段によって行
い、空気供給量を積極的に増加させるという手段によら
ないので、前記設定値を適切に設定しておけば、後燃焼
帯に過剰量の空気が供給されて炉が冷却される、あるい
はＮＯｘ発生量が増えるといった支障が起き難いという
特有の効果が生じる。[Advantages of the Invention] [0008] Due to the above characteristic configuration, in the combustion control device according to the fourth aspect of the present invention, afterburning is not started until the area of the flame region in the afterburning zone exceeds the set value. becomes oN Rukoto the operation of the promotion of combustion in the strip, moreover, the area of the flame region of the post-combustion zone
The post-combustion zone based on the judgment that the value exceeds the set value.
To accelerate combustion, and set the stoker speed in the post combustion zone to the normal value.
Lower than that to secure combustion time.
By actively increasing the air supply.
Therefore, if the set value is properly set, there is a unique effect that it is difficult to cause trouble such as an excessive amount of air being supplied to the post-combustion zone to cool the furnace or an increase in NOx generation amount. .
【０００９】さらに、燃焼強度が設定値を超えている
と、（後燃焼帯での灰化が目下進行中であると判断し
て、）後燃焼帯への空気供給量を通常値よりも増加する
ので、燃焼を促進して迅速に灰化することができ、結果
的に後燃焼帯での灰化をほぼ完全に行うことができると
いう特有の効果が生じる。Further , the combustion intensity exceeds the set value.
And (determined that ashing in the post combustion zone is currently in progress.
,) Increase the air supply to the afterburning zone above the normal value
As a result, combustion can be promoted and ash can be quickly obtained.
As a result, there is a peculiar effect that ashing in the afterburning zone can be performed almost completely .
【００１０】[0010]
【００１１】[0011]
【００１２】[0012]
【発明の実施の形態】以下、本発明に係る燃焼制御装置
とその装置を用いた燃焼制御方法について、図面に基づ
いて解説する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a combustion control device according to the present invention and a combustion control method using the device will be described with reference to the drawings.
【００１３】（燃焼制御装置の構成）図１に示すよう
に、本発明に係る燃焼制御装置を備えた都市ごみ焼却炉
は、焼却対象物としての都市ごみを受け入れるホッパ
３、ホッパ３内のごみを炉内に押し出すプッシャ４、押
し出されたごみを炉内の奥側へ搬送しながら焼却処理す
るストーカ式の焼却処理帯５、焼却処理帯５の下方から
前記ごみに向けて一次燃焼用の空気を供給する空気供給
手段６を備えている。焼却処理帯５は、最もプッシャ４
に近接した第１処理部５ａに始まり、以降第２処理部５
ｂ、第３処理部５ｃ、第４処理部５ｄの四つに分割され
ており、これら四つの処理部の各々は水平な火格子面を
備えており、四つの処理部の個々同士は互いに連続して
配置されているが、炉内の奥にいくほどレベルが下がる
ように階段状に構成されている。また、個々の処理部の
使用目的から、第１処理部５ａは前記ごみを乾燥させな
がら搬送するので乾燥帯Ｌと呼ばれ、第２と第３処理部
５ｂ，５ｃは合わせて、乾燥帯Ｌから受け取った乾燥し
た前記ごみを燃焼させながら搬送するので燃焼帯Ｍと呼
ばれ、第４処理部５ｄは原則的にほぼ燃焼し切った前記
ごみの燃えかすを完全に灰化するので後燃焼帯Ｎと呼ば
れる。(Structure of Combustion Control Device) As shown in FIG. 1, a municipal solid waste incinerator equipped with a combustion control device according to the present invention includes a hopper 3 for receiving municipal solid waste as an object to be incinerated, and waste in the hopper 3. Pusher 4 that pushes the waste into the furnace, a stoker-type incineration zone 5 that incinerates the pushed waste while conveying it to the inner side of the furnace, and air for primary combustion from below the incineration zone 5 toward the waste. Air supply means 6 for supplying The incineration zone 5 is the most pusher 4
Starting from the first processing unit 5a close to
b, a third processing unit 5c, and a fourth processing unit 5d, each of which is provided with a horizontal grate surface, and the four processing units are continuous with each other. However, they are arranged in a staircase so that the level goes down toward the inside of the furnace. In addition, since the first processing unit 5a conveys the waste while drying it, it is called a drying zone L because of the purpose of use of the individual processing sections. The second and third processing sections 5b and 5c are collectively referred to as the drying zone L. It is called a combustion zone M because it conveys the dried waste received from the combustion station while burning it. In principle, the fourth processing unit 5d completely incinerates the burned dust of the refuse that has been completely burned, so that the post-combustion zone. Called N.
【００１４】空気供給手段６は、ブロアファン６ａによ
る誘引空気を前記各処理部５ａ，５ｂ，５ｃ，５ｄの下
方に各別に設けた風箱６ｃに送風路６ｂを介して供給可
能に構成されており、さらに、送風路６ｂの一部に設け
られたダンパ機構６ｄにより、各処理部への送風量を調
節可能である。焼却処理帯５の上方は、前記ごみを焼却
処理するための一次燃焼領域１であり、その更に上方に
煙道状に形成された空間は、一次燃焼領域１で発生した
燃焼ガスを完全燃焼させる二次燃焼領域２である。二次
燃焼領域２の上流部の一方の端には外気を炉内に供給す
るための二次燃焼用空気供給機構１３を設けており、こ
れはノズル１３ａとブロアファン１３ｂを含む。また、
二次燃焼領域２の上流部の他方の端には炉内の燃焼ガス
を加熱するためのバーナ機構１４を設けている。二次燃
焼領域２の下流部には廃熱ボイラ１２があり、燃焼によ
って生じた熱量を蒸気の形で発電装置１１に送る。炉内
で生じた排ガスは、廃熱ボイラ１２の更に下流にある排
ガス路７からバグフィルタ８と洗煙装置９を通り、煙突
１０に到達する。The air supply means 6 is so constructed as to be able to supply the air attracted by the blower fan 6a to the air box 6c separately provided below the processing sections 5a, 5b, 5c and 5d through the air passage 6b. In addition, the amount of air blown to each processing unit can be adjusted by the damper mechanism 6d provided in a part of the air blow passage 6b. The upper part of the incineration zone 5 is the primary combustion region 1 for incinerating the waste, and the flue-shaped space thereabove completely burns the combustion gas generated in the primary combustion region 1. It is the secondary combustion region 2. A secondary combustion air supply mechanism 13 for supplying outside air into the furnace is provided at one end of the upstream side of the secondary combustion region 2 and includes a nozzle 13a and a blower fan 13b. Also,
A burner mechanism 14 for heating combustion gas in the furnace is provided at the other end of the upstream portion of the secondary combustion region 2. A waste heat boiler 12 is provided downstream of the secondary combustion region 2 and sends the amount of heat generated by combustion to the power generation device 11 in the form of steam. The exhaust gas generated in the furnace reaches the chimney 10 from the exhaust gas passage 7 further downstream of the waste heat boiler 12 through the bag filter 8 and the smoke washing device 9.
【００１５】焼却処理帯５の下流側の側壁中央上部に
は、炉内の炎の状態をカラー画像データとして入力する
撮像手段として、カラーＣＣＤカメラ（ＩＴＶ）２０を
設けてある。別途用意されているマイクロコンピュータ
を利用した画像処理手段２１は、カラーＣＣＤカメラ２
０が入力したカラー画像データに基づいて後燃焼帯Ｎに
おける燃焼の炎の状態を検出することができる。画像処
理手段２１は、図２に示すように、後燃焼帯Ｎに関して
得られた前記カラー画像データを赤色（Ｒ）緑色（Ｇ）
青色（Ｂ）の各色成分に分解する分解手段と、前記分解
によって得られた緑色（Ｇ）成分の強度が所定値を超え
る画素を後燃焼帯Ｎの炎領域として抽出し、その炎領域
の面積ＳF を演算する第１面積演算手段と、得られた面
積ＳF の値を所定の閾値ＳTHと比較する面積比較手段Ｃ
Aと、後燃焼帯Ｎの前記炎領域における青色（Ｂ）成分
の強度の緑色（Ｇ）成分の強度に対する比率ＩB ／ＩG
が所定の閾値を超える画素を後燃焼帯Ｎの高温炎領域と
して抽出し、その高温炎領域の面積ＳHFを演算する第２
面積演算手段と、高温炎領域の面積ＳHFの炎領域の面積
ＳF に対する比ＳHF／ＳF で定義される後燃焼帯Ｎの燃
焼強度Ｂｐを演算する燃焼強度演算手段と、得られた燃
焼強度Ｂｐを所定の閾値ＢTHと比較する燃焼強度比較手
段ＣB を備えている。画像処理手段２１は、面積比較手
段ＣA からの出力データと、燃焼強度比較手段ＣB から
の出力データに基づいて後燃焼帯Ｎの燃焼制御を行う。
尚、炎領域を判断するに際して、カラー画像データをＲ
ＧＢの各色成分に分解し、赤色（Ｒ）成分を除外するの
は、赤色（Ｒ）成分のデータには、炉内の赤熱した壁面
やごみなどの影響が含まれ易く、それらの物体と炎とを
識別する際の障害になるからであり、青色（Ｂ）成分を
除外するのは、青色（Ｂ）成分のデータは、炎の温度に
よる影響を大きく受け易いため、炎の温度を判断するの
には有効であっても、炎領域の範囲自体を判断する際の
障害になるからである。一方、青色（Ｂ）成分のデータ
は、後燃焼帯Ｎの燃焼状態を表す燃焼強度Ｂｐを演算す
る際に用いられている。A color CCD camera (ITV) 20 is provided in the upper center of the side wall on the downstream side of the incineration zone 5 as an image pickup means for inputting the state of the flame in the furnace as color image data. The image processing means 21 using a separately prepared microcomputer is the color CCD camera 2
The state of the combustion flame in the post combustion zone N can be detected based on the color image data input by 0. As shown in FIG. 2, the image processing means 21 uses the color image data obtained for the post combustion zone N as red (R) green (G).
Decomposing means for decomposing into blue (B) color components and pixels in which the intensity of the green (G) component obtained by the decomposition exceeds a predetermined value are extracted as a flame region of the post combustion zone N, and the area of the flame region is extracted. First area calculating means for calculating S F and area comparing means C for comparing the value of the obtained area S F with a predetermined threshold value S TH
A and the ratio I B / I G of the intensity of the blue (B) component to the intensity of the green (G) component in the flame region of the afterburning zone N
A pixel in which the value exceeds a predetermined threshold is extracted as a high temperature flame region in the post combustion zone N, and the area S HF of the high temperature flame region is calculated.
The area calculation means and the combustion strength calculation means for calculating the combustion strength Bp of the post combustion zone N defined by the ratio S HF / S F of the area S HF of the high temperature flame region to the area S F of the flame region are obtained. Combustion intensity comparison means C B for comparing the combustion intensity Bp with a predetermined threshold value B TH is provided. The image processing means 21 controls the combustion of the post combustion zone N based on the output data from the area comparison means C A and the output data from the combustion intensity comparison means C B.
When judging the flame area, the color image data is read as R
The reason why the red (R) component is decomposed into each color component of GB and the red (R) component is excluded is that the data of the red (R) component tends to include the effects of red hot walls and dust in the furnace, and those objects and flames The blue (B) component is excluded because the data of the blue (B) component is easily affected by the temperature of the flame, and thus the temperature of the flame is determined. This is because even if it is effective for, it becomes an obstacle in determining the range itself of the flame region. On the other hand, the data of the blue (B) component is used when calculating the combustion intensity Bp representing the combustion state of the post combustion zone N.
【００１６】（燃焼制御方法の構成）以下、本発明に係
る、焼却対象物の灰化をほぼ完全に進ませながら、しか
も、結果的に過剰量の空気を供給して、炉が冷却され
る、ＮＯｘ発生量が増えるといった支障が起き難い後燃
焼帯Ｎにおける燃焼制御方法の一実施形態について、図
３に示すフローチャートに基づいてより具体的に説明す
る。(Composition of Combustion Control Method) Hereinafter, according to the present invention, the furnace is cooled by substantially completely ashing the incineration object and, as a result, supplying an excessive amount of air. An embodiment of the combustion control method in the post combustion zone N in which the trouble that the NOx generation amount increases is unlikely to occur will be described more specifically based on the flowchart shown in FIG.
【００１７】＜＃１＞：先ず、後燃焼帯Ｎにおける炎の
状態を含む画像を、撮像手段２０によってカラー画像デ
ータとして入力する。
＜＃２＞：撮像手段２０によって得られた前記カラー画
像データを、画像処理手段２１の分解手段で赤色（Ｒ）
緑色（Ｇ）青色（Ｂ）の各色成分に分解する。
＜＃３＞：前記分解によって得られた緑色（Ｇ）成分を
抽出し、＜＃４＞：緑色（Ｇ）成分の強度が所定値を超
える画素を炎領域として抽出して、その炎領域の面積Ｓ
F を第１面積演算手段で演算する。
＜＃５＞：第２面積演算手段によって、前記炎領域にお
ける青色（Ｂ）成分の強度の緑色（Ｇ）成分の強度に対
する比率ＩB ／ＩG が所定の閾値を超える画素を高温炎
領域として抽出し、その高温炎領域の面積ＳHFを演算す
る。
＜＃６＞：燃焼強度演算手段によって、高温炎領域の面
積ＳHFの炎領域の面積ＳF に対する比ＳHF／ＳF で定義
される後燃焼帯Ｎの燃焼強度Ｂｐを演算する。
＜＃７＞：面積比較手段ＣA によって炎領域の面積ＳF
の値を所定の閾値ＳTHと比較する。
＜＃８＞：ステップ＜＃７＞での比較の結果、もし炎領
域の面積ＳF が閾値Ｓ THを超えていれば（Ｙｅｓ）、後
燃焼帯Ｎのストーカ速度を低速側（Ｌｏｗ）に設定す
る。
＜＃９＞：ステップ＜＃８＞でストーカ速度を低速側に
設定してから１分間のインターバル（インターバルの時
間長さは炉の規模、ごみ質等により適宜設定され得る）
の後、燃焼強度比較手段ＣB によって燃焼強度Ｂｐを閾
値ＢTHと比較する。
＜＃１０＞：ステップ＜＃９＞での比較の結果、もし燃
焼強度Ｂｐが閾値ＢTHを超えていれば（Ｙｅｓ）、後燃
焼帯Ｎへの空気供給量を増大側（Ｈｉｇｈ）に設定し、
フロー図のスタート地点に戻る。<# 1>: First, the flame in the post combustion zone N
The image including the state is processed by the image pickup means 20 to obtain a color image data.
Input as data.
<# 2>: the color image obtained by the image pickup means 20
The image data is red (R) by the decomposition means of the image processing means 21.
It is decomposed into green (G) and blue (B) color components.
<# 3>: The green (G) component obtained by the above decomposition is
Extracted <# 4>: The intensity of the green (G) component exceeds the specified value
The extracted pixel is extracted as a flame region, and the area S of the flame region is extracted.
FIs calculated by the first area calculating means.
<# 5>: By the second area calculating means,
The intensity of the blue (B) component against the intensity of the green (G) component
Ratio IB/ IGPixels that exceed a specified threshold
Area S of the high-temperature flame region extracted as a regionHFCalculate
It
<# 6>: The surface of the high temperature flame region is calculated by the combustion intensity calculation means.
Product SHFArea S of the flame areaFRatio toHF/ SFDefined by
The combustion intensity Bp of the post combustion zone N is calculated.
<# 7>: Area comparison means CABy the area S of the flame regionF
Value of the predetermined threshold STHCompare with.
<# 8>: As a result of the comparison in step <# 7>, if flame area
Area SFIs the threshold S THIf it exceeds (Yes), then
Set the stoker speed in combustion zone N to the low speed side (Low)
It
<# 9>: In step <# 8>, set the stoker speed to the low speed side.
Interval of 1 minute after setting (at the time of interval
The length of the space can be set appropriately depending on the size of the furnace, the quality of the waste, etc.)
After that, the combustion intensity comparison means CBCombustion threshold Bp
Value BTHCompare with.
<# 10>: If the result of the comparison in step <# 9> is
Baking strength Bp is threshold BTHIf it exceeds (Yes), afterburning
Set the air supply to the zone N to the increasing side (High),
Return to the start point of the flow chart.
【００１８】＜＃１１＞：一方、ステップ＜＃９＞での
比較の結果、もし燃焼強度Ｂｐが閾値ＢTHを超えていな
ければ（Ｎｏ）、後燃焼帯Ｎへの空気供給量を通常側
（Ｒｅｇｕｌａｒ）に設定し、フロー図のスタート地点
に戻る。
＜＃１２＞：また、もしステップ＜＃７＞での比較の結
果、もし炎領域の面積ＳF が閾値ＳTHを超えていなけれ
ば（Ｎｏ）、後燃焼帯Ｎのストーカ速度を通常側（Ｒｅ
ｇｕｌａｒ）に設定し、フロー図のスタート地点に戻
る。<# 11>: On the other hand, as a result of the comparison in step <# 9>, if the combustion intensity Bp does not exceed the threshold value B TH (No), the air supply amount to the post combustion zone N is set to the normal side. Set to (Regular) and return to the start point of the flow chart. <# 12>: Also, as a result of the comparison in step <# 7>, if the area S F of the flame region does not exceed the threshold value S TH (No), the stalker speed in the post combustion zone N is set to the normal side ( Re
(gular) and return to the starting point of the flow chart.
【００１９】以上の燃焼制御操作の結果、ステップ＜＃
７＞での炎領域の面積ＳF の値が閾値ＳTHを超えたとの
判断に基づいて、ステップ＜＃８＞で後燃焼帯のストー
カ速度を通常値よりも一旦下げた時から１分間のインタ
ーバル（インターバルの時間長さは炉の規模、ごみ質等
により適宜設定され得る）を経て後、炎領域面積ＳFが
閾値ＳTHと等しいか又はそれを下回れば、＜＃１２＞で
後燃焼帯Ｎのストーカ速度を通常値に戻すことになる。As a result of the above combustion control operation, step <#
Based on the judgment that the value of the area S F of the flame region in 7> exceeded the threshold value S TH , in step <# 8> the stoker speed in the post combustion zone was once lowered from the normal value for 1 minute. If the flame area area S F is equal to or less than the threshold value S TH after passing through the interval (the time length of the interval can be appropriately set depending on the scale of the furnace, the quality of refuse, etc.), the post-combustion is performed at <# 12>. The stalker speed of zone N will be returned to the normal value.
【００２０】〔別実施形態〕
〈１〉上記実施形態のステップ＜＃８＞では、ステップ
＜＃７＞での比較の結果がもし炎領域の面積ＳF が閾値
ＳTHを超えている（Ｙｅｓ）というものなら、後燃焼帯
Ｎのストーカ速度を低速側（Ｌｏｗ）に設定する操作を
とっているが、代わりに、後燃焼帯Ｎへの空気供給量を
増大側（Ｈｉｇｈ）に設定するという操作にする、ある
いは、ストーカ速度を低速側（Ｌｏｗ）に設定する操作
と、空気供給量を増大側（Ｈｉｇｈ）に設定する操作と
を同時に行うなどの変形例が実施可能である。
〈２〉また、炎領域の面積あるいは燃焼強度が各々の閾
値を超えている場合に、その超えた偏差量に応じて、ス
トーカ速度の減速量あるいは空気供給量の増大量を調整
し、負荷に応じた後燃焼の促進を実施することも可能で
ある。[Another Embodiment] <1> In step <# 8> of the above embodiment, the result of the comparison in step <# 7> is that the area S F of the flame region exceeds the threshold value S TH (Yes). ), The operation of setting the stalker speed of the post combustion zone N to the low speed side (Low) is performed, but instead, the air supply amount to the post combustion zone N is set to the increase side (High). It is possible to implement a modified example in which the operation is performed or the operation of setting the stoker speed to the low speed side (Low) and the operation of setting the air supply amount to the increase side (High) are performed at the same time. <2> Further, when the area of the flame region or the combustion intensity exceeds each threshold value, the deceleration amount of the stoker speed or the increase amount of the air supply amount is adjusted according to the deviation amount that exceeds the threshold value, and the load is increased. It is also possible to carry out the promotion of post-combustion accordingly.
【図１】本発明に係る燃焼制御装置を備えた都市ごみ焼
却炉の概略縦断側面図FIG. 1 is a schematic vertical sectional side view of a municipal solid waste incinerator equipped with a combustion control device according to the present invention.
【図２】図１の燃焼制御装置の画像処理手段の構成を示
す略図2 is a schematic diagram showing the configuration of image processing means of the combustion control device of FIG. 1. FIG.
【図３】図１の燃焼制御装置による後燃焼帯の燃焼制御
方法を示すフロー図FIG. 3 is a flowchart showing a combustion control method of a post combustion zone by the combustion control device of FIG.
１ 一次燃焼領域 ２ 二次燃焼領域 ３ ホッパ ５ 焼却処理帯 ６ 空気供給手段 ２０ 撮像手段 ２１ 画像処理手段 Ｌ 乾燥帯 Ｍ 燃焼帯 Ｎ 後燃焼帯 ＣA 面積比較手段 ＣB 燃焼強度比較手段1 primary combustion zone 2 the secondary combustion zone 3 hopper 5 incineration zone 6 air supply means 20 imaging means 21 image processing means L dryland M combustion zone C A area comparison means after the combustion zone N C B combustion intensity comparing means
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−332661（ＪＰ，Ａ) 特開 平２−115609（ＪＰ，Ａ) 特開 平７−55125（ＪＰ，Ａ) 特開 平６−331120（ＪＰ，Ａ) 特開 昭63−123913（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F23N 5/08 ─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-7-332661 (JP, A) JP-A-2-115609 (JP, A) JP-A-7-55125 (JP, A) JP-A-6- 331120 (JP, A) JP-A-63-123913 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) F23N 5/08
Claims (5)
データとして入力する撮像手段を用意し、前記撮像手段
によって得られる前記カラー画像データを赤色（Ｒ）緑
色（Ｇ）青色（Ｂ）の各色成分に分解し、 緑色（Ｇ）成分の強度が所定の閾値を超える画素に基づ
いて、前記後燃焼帯の炎領域の面積（Ｓ F ）を演算し、 前記後燃焼帯の前記炎領域における青色（Ｂ）成分の強
度の緑色（Ｇ）成分の強度に対する比率が所定の閾値を
超える画素に基づいて、前記後燃焼帯の高温炎領域の面
積（Ｓ HF ）を演算し、さらに、 前記後燃焼帯の前記高温炎領域の面積（Ｓ HF ）の前記炎
領域の面積（Ｓ F ）に対する比（Ｓ HF ／Ｓ F ）に基づい
て、燃焼強度（Ｂｐ）を演算し 、 前記炎領域の面積（ＳF）が設定値を超えると後燃焼帯
のストーカ速度を通常値よりも下げ、 前記後燃焼帯のストーカ速度を前記通常値よりも下げて
から所定の時間インターバルが経過した時点で、前記燃
焼強度（Ｂｐ）が設定値（Ｂ TH ）を超えていれば、後燃
焼帯への空気供給量を通常値よりも増加する 燃焼制御方
法。1. An image pickup means for inputting a state of a flame in a post-combustion zone as color image data is prepared, and the color image data obtained by the image pickup means is red (R) green (G) blue (B). The area (S F ) of the flame region in the post-combustion zone is calculated based on the pixels that are decomposed into components and the intensity of the green (G) component exceeds a predetermined threshold value, and the blue color in the flame region in the post-combustion zone is calculated. Strength of (B) ingredient
The ratio of the green (G) component intensity to the intensity
The surface of the high temperature flame region of the afterburning zone based on the number of pixels exceeding
The product (S HF ) is calculated, and the flame of the area (S HF ) of the high temperature flame region in the post combustion zone is further calculated.
Based on the ratio (S HF / S F ) to the area of the region (S F ).
Te, calculates the combustion intensity (Bp), the stoker speed area (S F) is the combustion zone after exceeds the set value of the flame region lower than the normal value, the normal value stoker speed of the post-combustion zone Lower than
When a predetermined time interval has passed from
If the firing strength (Bp) exceeds the set value (B TH ), afterburning
A combustion control method that increases the amount of air supplied to the zone from above the normal value .
回っているとの判断に基づいて後燃焼帯のストーカ速度
を通常値に戻す請求項１に記載の燃焼制御方法。2. The area (S F ) of the flame region is below a set value.
Stalker speed in the post combustion zone based on the judgment that it is turning
2. The combustion control method according to claim 1, wherein is returned to a normal value.
TH ）を下回っているとの判断に基づいて後燃焼帯への空
気供給量を通常値に戻す請求項１または２に記載の燃焼
制御方法。3. The combustion intensity (Bp) is the set value (Bp).
3. The combustion control method according to claim 1 or 2, wherein the air supply amount to the post combustion zone is returned to a normal value based on the determination that it is lower than TH 2 .
データとして入力する撮像手段、前記撮像手段によって
得られる前記カラー画像データを赤色（Ｒ）緑色（Ｇ）
青色（Ｂ）の各色成分に分解する分解手段、前記分解手
段によって得られる緑色（Ｇ）成分の強度が設定値を超
える画素で定義される後燃焼帯の炎領域の面積（Ｓ F ）
を演算して結果を設定値と比較する面積比較手段、及
び、前記後燃焼帯の前記炎領域における青色（Ｂ）成分
の強度の緑色（Ｇ）成分の強度に対する比率が所定の閾
値を超える画素で前記後燃焼帯の高温炎領域の面積（Ｓ
HF ）を演算し、前記後燃焼帯における前記高温炎領域の
前記炎領域に対する面積比（Ｓ HF ／Ｓ F ）で表される燃
焼強度（Ｂｐ）を演算して結果を設定値（Ｂ TH ）と比較
する燃焼強度比較手段を備え、さらに、前記炎領域の面
積（Ｓ F ）が設定値を超えると後燃焼帯のストーカ速度
を通常値よりも下げ、前記後燃焼帯のストーカ速度を前
記通常値よりも下げてから所定の時間インターバルが経
過した時点で、前記燃焼強度（Ｂｐ）が設定値（Ｂ TH ）
を超えていれば、後燃焼帯への空気供給量を通常値より
も増加する操作手段を有する燃焼制御装置。 4. A color image showing the state of flame in the afterburning zone.
Image pickup means for inputting as data, by the image pickup means
The obtained color image data is red (R) green (G)
Decomposing means for decomposing into blue (B) color components, said decomposing hand
The intensity of the green (G) component obtained by the step exceeds the set value.
Area of post-combustion zone flame region (S F )
Area comparison means for calculating and comparing the result with the set value, and
And the blue (B) component in the flame region of the afterburning zone
The ratio of the intensity of the green to the intensity of the green (G) component is a predetermined threshold.
The area of the high temperature flame region of the post combustion zone (S
HF ) to calculate the high temperature flame region of the post combustion zone.
The fuel expressed by the area ratio (S HF / S F ) to the flame region
Calculate the baking strength (Bp ) and compare the result with the set value (B TH ).
And a surface of the flame region.
If the product (S F ) exceeds the set value, the stoker velocity in the post combustion zone
Is lower than the normal value, and the stalker speed in the post combustion zone is
The specified time interval has elapsed since the value was lowered below the normal value.
At the time of passing, the combustion intensity (Bp) is the set value (B TH ).
If it exceeds, the air supply amount to the post combustion zone is higher than the normal value.
A combustion control device having an operating means that also increases.
F ）が設定値を下回っているとの判断に基づいて後燃焼
帯のストーカ速度を通常値に戻し、前記燃焼強度（Ｂ
ｐ）が前記設定値（Ｂ TH ）を下回っているとの判断に基
づいて後燃焼帯への空気供給量を通常値に戻すように構
成されている請求項４に記載の燃焼制御装置。 5. The area of the flame region (S
After combustion based on the judgment that ( F ) is below the set value
Return the stoker speed of the belt to the normal value and set the combustion intensity (B
p) is below the set value (B TH ).
Based on this, the amount of air supplied to the post combustion zone is set back to the normal value.
The combustion control device according to claim 4, wherein the combustion control device is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04340397A JP3534562B2 (en) | 1997-02-27 | 1997-02-27 | Combustion control method and combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04340397A JP3534562B2 (en) | 1997-02-27 | 1997-02-27 | Combustion control method and combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10238764A JPH10238764A (en) | 1998-09-08 |
| JP3534562B2 true JP3534562B2 (en) | 2004-06-07 |
Family
ID=12662809
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04340397A Expired - Fee Related JP3534562B2 (en) | 1997-02-27 | 1997-02-27 | Combustion control method and combustion control device |
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| Country | Link |
|---|---|
| JP (1) | JP3534562B2 (en) |
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|---|---|---|---|---|
| JP4915695B2 (en) * | 2006-10-31 | 2012-04-11 | 関東自動車工業株式会社 | Organosilicon compound discharge rate control device |
| AT512353A1 (en) * | 2012-01-11 | 2013-07-15 | Siemens Ag Oesterreich | METHOD FOR CONTROLLING A COMBUSTION AND / OR GASING DEVICE |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH10238764A (en) | 1998-09-08 |
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