JPH07133917A - Combustion controlling method for incinerating furnace - Google Patents
Combustion controlling method for incinerating furnaceInfo
- Publication number
- JPH07133917A JPH07133917A JP28225593A JP28225593A JPH07133917A JP H07133917 A JPH07133917 A JP H07133917A JP 28225593 A JP28225593 A JP 28225593A JP 28225593 A JP28225593 A JP 28225593A JP H07133917 A JPH07133917 A JP H07133917A
- Authority
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- Japan
- Prior art keywords
- amount
- combustion
- waste
- dust
- incinerator
- 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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Links
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- Incineration Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＣＯ，ＮＯｘ，ダイオ
キシンなどの有害物質の発生を最小限にするために用い
る焼却炉の燃焼制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control method for an incinerator used to minimize the generation of harmful substances such as CO, NOx and dioxins.
【０００２】[0002]
【従来の技術】従来、ごみを燃焼するための焼却炉は、
搬入されたごみをごみピットに一度蓄積させた後、クレ
ーンによってホッパー内に投入するピットアンドクレー
ン方式によるごみ受入部と、ごみ受入部から受入れられ
たごみを炉内に供給する給じん装置と、焼却炉内を攪拌
移動する火格子ごみ移動装置、及び火格子ごみ移動装置
に分配する一次燃焼空気量を各乾燥ゾーン、燃焼ゾー
ン、後燃焼ゾーンに分流する空気調節装置とを備えてい
る。2. Description of the Related Art Conventionally, incinerators for burning waste are
A pit-and-crane type waste receiving part that accumulates the introduced waste once in the waste pit and then loads it into the hopper by a crane, and a dust supply device that supplies the waste received from the waste receiving part into the furnace. It is provided with a grate dust moving device that stirs and moves in the incinerator, and an air control device that diverts the amount of primary combustion air distributed to the grate dust moving device to each drying zone, combustion zone, and post combustion zone.
【０００３】ホッパー内のごみは、給じん装置で焼却炉
内の火格子ごみ移動装置により攪拌されながら焼却炉内
を移動し、乾燥ゾーンで乾燥され、燃焼ゾーン、後燃焼
ゾーンで燃焼される。この際、一次燃焼空気は、一次風
量制御装置により所定の空気量が火格子ごみ移動装置の
火格子下部の各ゾーンに分配され焼却炉内に導入され
る。二次燃焼空気は、二次燃焼送風機により加圧され、
所定の空気量が炉内に導入される。The dust in the hopper moves in the incinerator while being stirred by the grate dust moving device in the incinerator by the dust feeder, is dried in the drying zone, and is burned in the combustion zone and the post combustion zone. At this time, as for the primary combustion air, a predetermined amount of air is distributed to each zone under the grate of the grate refuse moving device by the primary air volume control device and introduced into the incinerator. The secondary combustion air is pressurized by the secondary combustion blower,
A predetermined amount of air is introduced into the furnace.
【０００４】給じん装置により焼却炉内に送り込まれた
ごみは、火格子ごみ移動装置により移動して乾燥され、
炉内の中心部において燃焼され、後熱に置き火して未燃
物をさらに燃焼し灰として排出される。その間、燃焼が
完結するまで約１時間かかる。The dust sent into the incinerator by the dust feeding device is moved by the grate dust moving device to be dried,
It is burned in the central part of the furnace, ignited by post heat and further burned unburned materials and discharged as ash. Meanwhile, it takes about 1 hour to complete the combustion.
【０００５】したがって、燃焼状況から判断して、ごみ
質の変動を感知したときは、約１時間分のごみがすでに
過多ごみ、もしくは過少ごみ状態になって炉内に入って
いるため燃焼制御が困難となっている。この燃焼制御の
問題を解決するために以下の項目に述べるような各種の
自動燃焼制御方法が考えられている。Therefore, when the fluctuation of the dust quality is sensed by judging from the combustion state, the combustion control is performed because about one hour's worth of waste has already entered into the furnace as excessive waste or under-waste. It has become difficult. In order to solve this combustion control problem, various automatic combustion control methods described in the following items have been considered.
【０００６】ごみ厚（火格子ごみ移動装置の火格子上
におけるごみの厚さ）を測定し、ごみ送り速度を調節す
る。[0006] The dust thickness (thickness of dust on the grate of the grate dust moving device) is measured, and the dust feed speed is adjusted.
【０００７】ごみ燃え切り点を測定し、ごみ送り速度
を調節する。The dust burn-out point is measured and the dust feed speed is adjusted.
【０００８】ごみ投入量（ごみ投入クレーンの重量測
定）、ごみホッパーのごみ移動量より見かけ比重を算出
し、ごみ質（比重大のとき水分大、比重小のとき水分小
と仮定）を算出しごみ送り速度を調節する。[0008] The apparent specific gravity is calculated from the amount of waste input (weight measurement of the waste input crane) and the amount of waste transfer of the waste hopper, and the quality of the waste (assuming a large amount of water when specific gravity is high and a small amount of water when specific gravity is low) Adjust the garbage feed speed.
【０００９】ごみ質がわかっている場合には、ごみの
低位発熱量（水の蒸気化熱量及び高位発熱量）または高
位発熱量（ごみを燃やした時、実際にでる熱量）を算出
し、ごみ送り速度を調節する（例えば、特公平５−１７
４５３号公報を参照）。If the quality of the waste is known, the lower calorific value of the waste (the heat of vaporization of water and the higher calorific value of water) or the higher calorific value (the amount of heat actually generated when burning the waste) is calculated, Adjust the feed rate (for example, Japanese Patent Publication No. 5-17
453).
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、上記
及びの項目に記載した制御方法は燃焼結果であり、約
１時間分のごみが炉内に入っているので制御方法として
は好ましくなく、正確な測定は実質的に困難である。
の項目に記載した制御方法は、見かけ比重（そっと置い
たときの比重）そのものがごみホッパー内で圧縮、ごみ
形状による容積の変動があり、測定自体が不正確になっ
てしまい、単に目安にしか過ぎない。の項目に記載し
た制御方法は、総燃焼エネルギー（（発熱量）×（燃焼
量））を測定できるが、発熱量そのものは推定でしかな
く不正確である。上述の理由から、いずれの制御方法も
根本的な解決にならない。However, the control methods described in the above and the above items are combustion results and are not preferable as a control method because about 1 hour of dust is in the furnace, and accurate measurement is not possible. Is practically difficult.
In the control method described in the item, the apparent specific gravity (specific gravity when gently placed) itself is compressed in the dust hopper, and the volume changes due to the dust shape, which makes the measurement itself inaccurate and is only a guideline. Not too much. Although the control method described in the item can measure the total combustion energy ((calorific value) × (combustible value)), the calorific value itself is an estimation and is inaccurate. For the reasons mentioned above, neither control method is a fundamental solution.
【００１１】それ故に、本発明の課題は、焼却炉内の投
入ごみ量と燃焼しているごみ量とをバランスさせること
により、焼却炉内のごみの滞留量の増大、ごみ枯れ（炉
中が全部燃えて、もう燃料となるごみがなくなる状態）
を防止し、制御特性を改善する焼却炉の燃焼制御方法を
提供することにある。Therefore, an object of the present invention is to balance the amount of input waste in the incinerator with the amount of burning waste, thereby increasing the amount of waste of waste in the incinerator and eliminating the waste (in the furnace (A state in which everything burns and there is no more garbage to use as fuel)
It is an object of the present invention to provide a combustion control method for an incinerator, which prevents the occurrence of heat and improves control characteristics.
【００１２】[0012]
【課題を解決するための手段】本発明によれば、ごみを
ごみピットに一度蓄積させた後、クレーンによって投入
するピットアンドクレーン方式によるごみ受入部と、該
ごみ受入部から受入れられたごみを焼却炉内に供給する
給じん装置と、該焼却炉内で前記ごみを攪拌移動する火
格子ごみ移動装置と、該火格子ごみ移動装置へ供給する
燃焼空気量を乾燥、燃焼、後燃焼の各ゾーンに分流する
空気量調節装置とを備え、前記焼却炉の燃焼を制御する
焼却炉の燃焼制御方法において、前記燃焼空気量、排ガ
ス中の酸素濃度、及び焼却炉出口の排ガス温度を検出し
燃焼演算により現在燃焼しているごみ量と、前記クレー
ンで計測されたごみ量との差を算出し、前記焼却炉内の
ごみホールド量の変動量に基づいて、前記燃焼空気量、
前記給じん装置の給じん量、前記火格子ごみ移動装置の
火格子ごみ移動速度、及び前記各ゾーンへの燃焼空気分
流比の補正制御を行うことを特徴とする焼却炉の燃焼制
御方法が得られる。According to the present invention, a pit-and-crane type waste receiving section that deposits waste once in a waste pit and then loads it with a crane, and the waste received from the waste receiving section A dust supply device for supplying into the incinerator, a grate dust moving device for stirring and moving the dust in the incinerator, and a combustion air amount supplied to the grate dust moving device for drying, burning, and post-burning A combustion control method for an incinerator that controls combustion of the incinerator, comprising: an air amount control device for branching into a zone; and detecting the combustion air amount, the oxygen concentration in the exhaust gas, and the exhaust gas temperature at the incinerator outlet to burn the combustion. The difference between the amount of waste currently burned by calculation and the amount of waste measured by the crane is calculated, and based on the amount of fluctuation of the amount of waste hold in the incinerator, the amount of combustion air,
A combustion control method for an incinerator characterized by performing correction control of a dust supply amount of the dust supply device, a grate dust movement speed of the grate dust movement device, and a combustion air branch flow ratio to each zone is obtained. To be
【００１３】[0013]
【作用】本発明の焼却炉の燃焼制御方法では、燃焼制御
により、空気流量、燃焼ガス中の酸素濃度、炉出口ガス
温度により現在燃焼中のごみ量を算出する。その積算値
と、クレーンにより炉に投入されたごみ量の積算値との
差により、火格子ごみ移動装置の火格子上にあるごみホ
ールド量（焼却炉内の残燃料）を算出して火格子の送り
速度を調節する。この焼却炉の燃焼制御方法によって、
焼却炉内の燃焼火焔の位置が安定し、ＣＯ，ＮＯｘ，ダ
イオキシンなどの発生を最小限にする。In the combustion control method for the incinerator according to the present invention, the amount of dust currently being burned is calculated by the combustion control based on the air flow rate, the oxygen concentration in the combustion gas, and the furnace outlet gas temperature. Based on the difference between the integrated value and the integrated value of the amount of waste thrown into the furnace by the crane, the amount of waste hold (remaining fuel in the incinerator) on the grate of the grate waste moving device is calculated Adjust the feed rate of. By the combustion control method of this incinerator,
The position of the combustion flame in the incinerator is stable, and the generation of CO, NOx, dioxin, etc. is minimized.
【００１４】ごみのホールド量による制御方法では、現
在燃焼しているごみ量と、投入されるごみ量とをバラン
スさせると、焼却炉内のごみの滞留量の増大、ごみ枯れ
（炉中が全部燃えて、もう燃料となるごみがなくなる状
態）を防止するので、制御特性が改善される。In the control method based on the amount of hold of waste, if the amount of waste that is currently being burned and the amount of waste that is being input are balanced, the amount of waste that remains in the incinerator increases and the amount of waste is exhausted (all inside the incinerator is exhausted). The control characteristics are improved by preventing the situation where the fuel burns and there is no more dust that becomes fuel.
【００１５】[0015]
【実施例】次に、図１及び図２に基づき本発明の焼却炉
の燃焼制御方法の一実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the combustion control method for an incinerator according to the present invention will be described with reference to FIGS.
【００１６】図１を参照して、この実施例の焼却炉で
は、搬入されたごみ５１をピット５２に一度蓄積させた
後、クレーン（クレーンバケット）５３によってホッパ
ー（ごみ受入部）５４内に投入するピットアンドクレー
ン方式を採用している。With reference to FIG. 1, in the incinerator of this embodiment, the loaded refuse 51 is once accumulated in a pit 52, and then loaded into a hopper (dust receiving portion) 54 by a crane (crane bucket) 53. The pit-and-crane method is adopted.
【００１７】焼却炉は、ホッパー５４内に受入れられた
ごみを焼却炉内に供給する給じん装置５５と、焼却炉内
のごみを攪拌移動する火格子ごみ移動装置５６と、一次
燃焼空気量を乾燥ゾーン、燃焼ゾーン、後燃焼ゾーンの
各ゾーンに分流する空気量調節装置とを備えている。The incinerator includes a dust supply device 55 for supplying the waste received in the hopper 54 to the incinerator, a grate dust transfer device 56 for stirring and moving the waste in the incinerator, and a primary combustion air amount. It is provided with an air amount adjusting device for branching into each of the drying zone, the combustion zone, and the post-combustion zone.
【００１８】ホッパー５４内のごみは、給じん装置５５
で焼却炉内の火格子ごみ移動装置５６により攪拌されな
がら焼却炉内を移動して乾燥された後に燃焼される。一
次燃焼空気は、一次燃焼送風機５７により加圧され、風
量制御装置により所定の空気量が火格子下部の各ゾーン
に分配され焼却炉内に導入される。二次燃焼空気は、二
次燃焼送風機５８により加圧され、風量制御装置により
所定の空気量が導入される。The dust in the hopper 54 is collected by the dust supply device 55.
In the incinerator, it moves in the incinerator while being agitated by the grate dust moving device 56, dried, and then burned. The primary combustion air is pressurized by the primary combustion air blower 57, and a predetermined amount of air is distributed to each zone under the grate by the air volume control device and introduced into the incinerator. The secondary combustion air is pressurized by the secondary combustion blower 58, and a predetermined amount of air is introduced by the air volume control device.
【００１９】図２にも示すように、ボイラー５９による
タービンのための運転用の発生蒸気量を一定にする蒸気
発生量一定制御は、一次燃焼空気量調節装置Ａ、二次燃
焼空気量調節装置Ｂにより全燃焼ガス熱量を一定にする
よう制御される。火格子ごみ移動装置５６の火格子下部
における各ゾーン空気配分は、それぞれ手動設定器によ
り、乾燥ゾーン、燃焼ゾーン、後燃焼ゾーンの燃焼空気
の各配分量補正をするためのＺｏｎｅ（ゾーン）１ 空
気設定１３、Ｚｏｎｅ（ゾーン）２ 空気設定１４、Ｚ
ｏｎｅ（ゾーン）３ 空気設定１５、Ｚｏｎｅ（ゾー
ン）４ 空気設定１６で予め設定された各空気量で分配
される。As shown in FIG. 2, the constant steam generation amount control for making the steam generation amount for operation by the boiler 59 for the turbine constant is performed by the primary combustion air amount adjusting device A and the secondary combustion air amount adjusting device. It is controlled by B so that the total calorific value of the combustion gas is constant. The zone air distribution in the lower part of the grate of the grate refuse moving device 56 is a Zone (zone) 1 air for correcting each distribution amount of the combustion air in the drying zone, the combustion zone, and the post-combustion zone by a manual setting device. Setting 13, Zone 2 Air setting 14, Z
The air amount is preset in each of the one (zone) 3 air setting 15 and the zone (zone) 4 air setting 16.
【００２０】また、燃料であるごみ量は、給じん装置５
５の給じん速度を調節する給じん速度調節装置３０によ
り給じん速度が調節されて焼却炉内に投入される。焼却
炉内に投入されたごみは、火格子上ごみ移動速度調節装
置３１で攪拌されながら焼却炉内を移動し、乾燥及び燃
焼される。Further, the amount of dust that is fuel is determined by the dust supply device 5.
The dust-supply speed adjusting device 30 for adjusting the dust-supply speed of No. 5 adjusts the dust-supply speed and puts it into the incinerator. The dust thrown into the incinerator moves in the incinerator while being stirred by the dust moving speed adjusting device 31 on the grate, and is dried and burned.
【００２１】しかし、これだけの制御方法では、焼却炉
内の燃焼が安定せず、急激に燃焼が増大もしくは減少し
てしまい、蒸気発生量の大幅な変動、ＣＯ，ＮＯｘ，ダ
イオキシンの増大をきたす。その主たる要因は、焼却炉
内に滞留するごみ量の変動である。すなわち、ごみ質
（湿ごみ）が低下すると、焼却炉内に滞留するごみ量が
増加し、ごみを乾燥させるための燃焼熱量が不足するこ
とから、著しく焼却炉の温度が低下し、燃焼が沈静化し
てしまう。また、ごみ質（乾ごみ）があると燃焼が促進
され、その後、焼却炉内の滞留ごみが少なくなり、ごみ
枯れの状態になり、急激に蒸気発熱量が低下する。However, with such a control method, the combustion in the incinerator is not stable, and the combustion rapidly increases or decreases, resulting in a large fluctuation in the amount of steam generated and an increase in CO, NOx, and dioxin. The main factor is fluctuations in the amount of waste accumulated in the incinerator. That is, when the quality of waste (wet waste) decreases, the amount of waste that accumulates in the incinerator increases, and the amount of heat of combustion for drying the waste is insufficient, so the temperature of the incinerator decreases significantly, and the combustion calms down. Will turn into. Further, if there is a waste quality (dry waste), the combustion is promoted, and thereafter, the amount of accumulated waste in the incinerator decreases, the state becomes a dead state, and the steam calorific value rapidly decreases.
【００２２】上述した欠陥を防ぐために、ごみホールド
量演算補正器Ｃにより補正制御を行う。焼却炉には、一
次燃焼空気量を検出する一次燃焼空気量検出器１と、二
次燃焼空気量を検出する二次燃焼空気量検出器２と、焼
却炉の炉出口から排出するガスの温度を検出する炉出口
排ガス温度検出器３と、排ガスの酸素濃度を検出する排
ガス酸素濃度検出器５と、クレーン５３により投入され
るごみの投入重量を検出するごみ投入重量検出器８とが
設けられている。In order to prevent the above-mentioned defects, the dust hold amount calculation corrector C performs correction control. The incinerator has a primary combustion air amount detector 1 that detects the amount of primary combustion air, a secondary combustion air amount detector 2 that detects the amount of secondary combustion air, and the temperature of the gas discharged from the furnace outlet of the incinerator. Is provided with a furnace outlet exhaust gas temperature detector 3 for detecting the exhaust gas, an exhaust gas oxygen concentration detector 5 for detecting the oxygen concentration of exhaust gas, and a dust input weight detector 8 for detecting the weight of the dust input by the crane 53. ing.
【００２３】一次燃焼空気量検出器１と二次燃焼空気量
検出器２とで検出した結果は、ごみホールド量演算補正
器Ｃの全燃焼空気演算部４、総発生熱量演算部６、炉内
燃焼ごみ量演算部７、ごみホールド量演算部１０、燃焼
空気量補正演算部１１で演算され、一次、二次燃焼空気
量補正演算器Ｅへ出力される。この際、炉出口排ガス温
度検出器３及び排ガス酸素濃度検出器５の検出により、
総発生熱量演算部６で演算される。ごみ投入重量検出器
８の検出結果は、積算，記憶演算部９で演算され比較演
算部１０に出力される。比較演算部１０は、二次燃焼空
気量補正部１１、炉下部燃焼空気量補正演算部１２、給
じん速度補正演算部２５に出力される。The results detected by the primary combustion air amount detector 1 and the secondary combustion air amount detector 2 are the total combustion air calculation unit 4, the total heat generation amount calculation unit 6, and the inside of the furnace of the dust hold amount calculation corrector C. It is calculated by the combustion dust amount calculation unit 7, the dust hold amount calculation unit 10, and the combustion air amount correction calculation unit 11, and is output to the primary and secondary combustion air amount correction calculation unit E. At this time, by the detection of the furnace outlet exhaust gas temperature detector 3 and the exhaust gas oxygen concentration detector 5,
It is calculated by the total heat generation calculation unit 6. The detection result of the dust input weight detector 8 is calculated by the integration / storage calculation unit 9 and output to the comparison calculation unit 10. The comparison calculation unit 10 is output to the secondary combustion air amount correction unit 11, the furnace lower combustion air amount correction calculation unit 12, and the charging speed correction calculation unit 25.
【００２４】また、炉出口排ガス温度検出器３の検出結
果は、二次燃焼空気補正演算器Ｄで演算される。炉下部
燃焼空気量補正部演算部１２の演算結果は、補正演算部
１７に出力され、Ｚｏｎｅ１ 空気量設定１３により空
気量調節装置２１の調節を行う。給じん速度補正演算部
２５の演算結果は、補正演算部２８で補正演算され、給
じん速度調節装置３０により給じん速度を補正する。The detection result of the furnace outlet exhaust gas temperature detector 3 is calculated by the secondary combustion air correction calculator D. The calculation result of the furnace lower combustion air amount correction unit calculation unit 12 is output to the correction calculation unit 17, and the air amount adjusting device 21 is adjusted by the Zone1 air amount setting 13. The calculation result of the dust feed speed correction calculation unit 25 is corrected and calculated by the correction calculation unit 28, and the dust feed speed is corrected by the dust feed speed adjusting device 30.
【００２５】また、給じん速度補正演算部２５は、火格
子上ごみ移動速度設定２７により補正演算部２９で演算
され火格子上ごみ移動速度調節装置３１により火格子上
ごみ移動速度を補正する。Further, the dust feed speed correction calculation unit 25 corrects the dust moving speed on the grate by the correction calculating unit 29 calculated by the dust moving speed setting 27 on the grate and the dust moving speed adjusting device 31 on the grate.
【００２６】Ｚｏｎｅ（ゾーン）２ 空気設定１４の設
定は、補正演算部１８で算出され、空気量調節装置２２
を制御する。Ｚｏｎｅ（ゾーン）３ 空気設定１５は、
補正演算部１９で算出され、空気量調節装置２３を制御
する。Ｚｏｎｅ（ゾーン）４は、補正演算部２０で算出
され、空気量調節装置２４を制御する。The setting of the Zone 2 air setting 14 is calculated by the correction calculating unit 18, and the air amount adjusting device 22 is set.
To control. Zone 3 Air settings 15
It is calculated by the correction calculator 19 and controls the air amount adjusting device 23. The Zone 4 is calculated by the correction calculator 20 and controls the air amount adjusting device 24.
【００２７】上述したごみホールド量演算補正器Ｃを用
いた焼却炉の燃焼制御方法では、一次燃焼空気量及び二
次燃焼空気量、排ガス中の酸素濃度、炉出口排ガス温度
により、燃焼演算により現在燃焼しているごみ量を算出
し、その積算値とクレーン５３で計測されたごみ量との
差により火格子火格子ごみ移動装置５６の火格子上にあ
るごみホールド量の変動量を算出する。この制御方法に
より、一次燃焼空気量、二次燃焼空気量、給じん装置５
５の給じん量、火格子装置５６の火格子ごみ移動速度を
調節するとともに、各ゾーンへの燃焼空気分流比の補正
制御が行なわれる。In the combustion control method of the incinerator using the dust hold amount calculation corrector C described above, the combustion calculation is performed based on the primary combustion air amount and the secondary combustion air amount, the oxygen concentration in the exhaust gas, and the furnace outlet exhaust gas temperature. The amount of refuse being burned is calculated, and the amount of change in the amount of dust held on the grate of the grate grate dust moving device 56 is calculated from the difference between the integrated value and the amount of dust measured by the crane 53. By this control method, the amount of primary combustion air, the amount of secondary combustion air, and the dust supply device 5
5 and the grate dust moving speed of the grate device 56 are adjusted, and the correction control of the combustion air distribution ratio to each zone is performed.
【００２８】このような制御方法は、特に、発電機が付
属している大型炉において、タービンのための運転用の
発生蒸気量を一定にすることが望ましい焼却炉に必要と
される。Such a control method is required especially in a large-scale furnace equipped with a generator, and in an incinerator in which it is desirable to keep the amount of steam generated for operation for the turbine constant.
【００２９】[0029]
【発明の効果】以上、実施例によって説明したように、
本発明のによると、炉内のホールド量に基づき、炉内空
気量、各ゾーンの分流比（低質ごみの場合は乾燥ゾーン
の空気量を増加、高質ごみの場合は乾燥ゾーンの空気量
を減ずる）、ごみ給じん量、火格子ごみ攪拌、移動速度
を適性な値に調節することにより燃焼を安定させること
ができるとともに、焼却灰中に残留する未燃焼分を減
少、炉内温度の過昇によるクリンカ発生や火格子の乾燥
が防止でき、ＣＯ，ＮＯｘ，ダイオキシン発生も抑止で
きる。As described above with reference to the embodiments,
According to the present invention, based on the hold amount in the furnace, the air amount in the furnace, the diversion ratio of each zone (in the case of low-quality waste increase the air amount in the drying zone, in the case of high-quality waste the air amount in the drying zone Combustion can be stabilized by adjusting the dust supply amount, grate dust agitation, and moving speed to appropriate values, while reducing the unburned content remaining in the incineration ash and increasing the furnace temperature. It is possible to prevent the generation of clinker due to rising and the drying of the grate, and to suppress the generation of CO, NOx and dioxin.
【００３０】また、現在燃焼しているごみ量と、投入さ
れるごみ量とをバランスさせることにより、焼却炉内の
ごみの滞留量の増大、ごみ枯れ（炉中が全部燃えて、も
う燃料となるごみがなくなる状態）を防止するので、制
御特性が大幅に改善される。Further, by balancing the amount of waste currently being burned and the amount of waste to be input, the amount of accumulated waste in the incinerator is increased and the waste is exhausted (the entire furnace burns and the (A state in which there is no dust left) is prevented, and the control characteristics are greatly improved.
【図１】本発明の焼却炉及び主要制御部分の一実施例を
示す概略構成図である。FIG. 1 is a schematic configuration diagram showing an embodiment of an incinerator and a main control part of the present invention.
【図２】本発明の焼却炉の燃焼制御方法の一実施例を示
すブロック線図である。FIG. 2 is a block diagram showing an embodiment of a combustion control method for an incinerator according to the present invention.
１ 一次燃焼空気検出器 ２ 二次燃焼空気検出器 ３ 炉出口排ガス温度検出器 ４ 全燃焼空気量演算部 ５ 排ガス酸素濃度検出器 ６ 総発生熱量演算部 ７ 炉内燃焼ごみ量演算部 ８ ごみ投入重量検出部 １０ ごみホールド量演算部 ３０ 給じん速度調節装置 ３１ 火格子上ごみ移動速度調節装置 ５２ ごみピット ５３ クレーン ５５ 給じん装置 ５６ 火格子ごみ移動装置 1 Primary combustion air detector 2 Secondary combustion air detector 3 Furnace outlet exhaust gas temperature detector 4 Total combustion air amount calculation unit 5 Exhaust gas oxygen concentration detector 6 Total heat generation amount calculation unit 7 In-furnace combustion waste amount calculation unit 8 Waste input Weight detection unit 10 Waste hold amount calculation unit 30 Dust speed adjusting device 31 Dust moving speed adjusting device on the grate 52 Garbage pit 53 Crane 55 Dust device 56 Grate dust moving device
Claims (1)
クレーンによって投入するピットアンドクレーン方式に
よるごみ受入部と、該ごみ受入部から受入れられたごみ
を焼却炉内に供給する給じん装置と、該焼却炉内で前記
ごみを攪拌移動する火格子ごみ移動装置と、該火格子ご
み移動装置へ供給する燃焼空気量を乾燥、燃焼、後燃焼
の各ゾーンに分流する空気量調節装置とを備え、前記焼
却炉の燃焼を制御する焼却炉の燃焼制御方法において、
前記燃焼空気量、排ガス中の酸素濃度、及び焼却炉出口
の排ガス温度を検出し燃焼演算により現在燃焼している
ごみ量と、前記クレーンで計測されたごみ量との差を算
出し、前記焼却炉内のごみホールド量の変動量に基づい
て、前記燃焼空気量、前記給じん装置の給じん量、前記
火格子ごみ移動装置の火格子ごみ移動速度、及び前記各
ゾーンへの燃焼空気分流比の補正制御を行うことを特徴
とする焼却炉の燃焼制御方法。1. After the garbage is once accumulated in the garbage pit,
A pit-and-crane system waste receiving part that is put in by a crane, a dust supply device that supplies the waste received from the waste receiving part into the incinerator, and a grate waste movement that stirs and moves the waste in the incinerator Apparatus and an air amount adjusting device for dividing the combustion air amount supplied to the grate refuse moving device into each zone of drying, combustion, and post-combustion, and controlling combustion of the incinerator At
The amount of combustion air, the oxygen concentration in the exhaust gas, and the exhaust gas temperature at the incinerator outlet are detected, and the difference between the amount of waste currently burned by the combustion calculation and the amount of waste measured by the crane is calculated, and the incineration is performed. Based on the fluctuation amount of the dust hold amount in the furnace, the combustion air amount, the dust supply amount of the dust supply device, the grate dust movement speed of the grate dust movement device, and the combustion air distribution ratio to each zone. Combustion control method for incinerator, characterized in that correction control is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5282255A JP2973154B2 (en) | 1993-11-11 | 1993-11-11 | Combustion control method for incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5282255A JP2973154B2 (en) | 1993-11-11 | 1993-11-11 | Combustion control method for incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07133917A true JPH07133917A (en) | 1995-05-23 |
| JP2973154B2 JP2973154B2 (en) | 1999-11-08 |
Family
ID=17650074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5282255A Expired - Fee Related JP2973154B2 (en) | 1993-11-11 | 1993-11-11 | Combustion control method for incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2973154B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0829683A2 (en) | 1996-09-12 | 1998-03-18 | Mitsubishi Denki Kabushiki Kaisha | Combustion system and operation control method thereof |
| WO1998043018A1 (en) * | 1997-03-26 | 1998-10-01 | Nkk Corporation | Combustion control method and apparatus for waste incinerators |
-
1993
- 1993-11-11 JP JP5282255A patent/JP2973154B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0829683A2 (en) | 1996-09-12 | 1998-03-18 | Mitsubishi Denki Kabushiki Kaisha | Combustion system and operation control method thereof |
| US5957063A (en) * | 1996-09-12 | 1999-09-28 | Mitsubishi Denki Kabushiki Kaisha | Combustion system and operation control method thereof |
| WO1998043018A1 (en) * | 1997-03-26 | 1998-10-01 | Nkk Corporation | Combustion control method and apparatus for waste incinerators |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2973154B2 (en) | 1999-11-08 |
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