JP2973154B2 - Combustion control method for incinerator - Google Patents
Combustion control method for incineratorInfo
- Publication number
- JP2973154B2 JP2973154B2 JP5282255A JP28225593A JP2973154B2 JP 2973154 B2 JP2973154 B2 JP 2973154B2 JP 5282255 A JP5282255 A JP 5282255A JP 28225593 A JP28225593 A JP 28225593A JP 2973154 B2 JP2973154 B2 JP 2973154B2
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- Japan
- Prior art keywords
- amount
- incinerator
- refuse
- combustion
- grate
- 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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- Incineration Of Waste (AREA)
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 for minimizing generation of harmful substances such as CO, NOx and dioxin.
【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 refuse are:
A pit-and-crane-type refuse receiving unit that accumulates garbage in a garbage pit once and then throws the garbage into a hopper by a crane; The apparatus is provided with a grate dust moving device that stirs and moves inside the incinerator, and an air conditioning device that divides the amount of primary combustion air distributed to the grate dust moving device into each of the drying zone, the combustion zone, and the 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。[0003] The refuse in the hopper moves in the incinerator while being stirred by the grate refuse moving device in the incinerator by the dust supply device, is dried in the drying zone, and is burned in the combustion zone and the post-combustion zone. At this time, a predetermined amount of primary combustion air is distributed by the primary air volume control device to each zone below the grate of the grate waste moving device, and is introduced into the incinerator. The secondary combustion air is pressurized by a 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 refuse sent into the incinerator by the dust supply device is moved and dried by the grate refuse transfer device,
It is burned in the central part of the furnace, ignited by post heat, and the unburned matter is further burned and discharged as ash. Meanwhile, it takes about one 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。[0005] Therefore, when a change in the quality of waste is sensed based on the combustion situation, about one hour of waste is already in an excessive amount or an insufficient amount of waste and has entered the furnace. It has become difficult. In order to solve the problem of the combustion control, 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 thickness of the refuse (the thickness of the refuse on the grate of the grate refuse moving device) is measured, and the refuse 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。[0007] The refuse burn-off point is measured and the refuse 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 based on the amount of waste input (weight measurement of the waste input crane) and the amount of waste moved by the waste hopper, and the waste quality (assuming that the water content is high when the specific gravity is low and the water content is low when the specific gravity is low) is calculated. Adjust the garbage feed rate.
【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 garbage is known, the lower calorific value of the garbage (the calorific value of water vaporization and the higher calorific value) or the higher calorific value (the calorific value actually generated when the garbage is burned) is calculated. Adjust the feed speed (for example, Japanese Patent Publication 5-17
No. 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 method described in the above and the above items is a result of combustion, and is not preferable as a control method because about one hour of refuse is contained in the furnace. 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 garbage hopper, and the volume changes due to the garbage shape, and the measurement itself becomes inaccurate. Not just. The control method described in the item can measure the total combustion energy ((calorific value) x (combustion amount)), but the calorific value itself is only an estimation and is inaccurate. For the reasons described above, none of the control methods 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。[0011] Therefore, an object of the present invention is to balance the amount of waste input into the incinerator and the amount of burning waste, thereby increasing the amount of waste retained in the incinerator and withering the waste (in the incinerator). Burned all, no more fuel garbage)
It is an object of the present invention to provide a combustion control method for an incinerator, which prevents the occurrence of a combustion 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 refuse receiving section in which refuse is once accumulated in a refuse pit and then charged by a crane, and refuse received from the refuse receiving section are provided. A dust supply device to be supplied to the incinerator, a grate refuse moving device for stirring and moving the refuse in the incinerator, and a method of drying, burning, and post-combusting the amount of combustion air supplied to the grate refuse transfer device. An incinerator combustion control method for controlling the combustion of the incinerator, comprising detecting the amount of the combustion air, the oxygen concentration in the exhaust gas, and the temperature of the exhaust gas at the outlet of the incinerator. The difference between the amount of waste currently burning by the calculation and the amount of waste measured by the crane is calculated, and the amount of combustion air is calculated based on the amount of change in the amount of waste held in the incinerator.
A combustion control method for an incinerator characterized by performing correction control of a dust amount of the dust feeding device, a grate dust moving speed of the grate dust moving device, and a combustion air diverting ratio to each zone. Can 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。According to the combustion control method of the incinerator of the present invention, the amount of waste currently burning is calculated from the air flow rate, the oxygen concentration in the combustion gas, and the gas temperature at the furnace outlet by the combustion control. Based on the difference between the integrated value and the integrated value of the amount of waste put into the furnace by the crane, the amount of garbage held on the grate of the grate waste moving device (remaining fuel in the incinerator) is calculated and the grate Adjust the feed speed of By the combustion control method of this incinerator,
The position of the combustion flame in the incinerator is stabilized, and the generation of CO, NOx, dioxin and the like 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 hold amount of the waste, if the amount of the currently burning waste and the amount of the injected waste are balanced, an increase in the amount of waste retained in the incinerator and the withering of the waste (all in the furnace). The control characteristic is improved since the fuel can be prevented from burning and garbage no longer serving as 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。Next, an embodiment of a 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。Referring to FIG. 1, in the incinerator of this embodiment, the refuse 51 carried in is once accumulated in a pit 52, and then put into a hopper (refuse receiving part) 54 by a crane (crane bucket) 53. Pit and crane system.
【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 refuse received in the hopper 54 into the incinerator, a grate refuse transfer device 56 for stirring and moving the refuse in the incinerator, and a primary combustion air amount. An air flow control device is provided for diverting air into each of a drying zone, a combustion zone, and a 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 refuse in the hopper 54 is supplied to a dusting device 55
After being moved in the incinerator while being agitated by the grate refuse moving device 56 in the incinerator, it is dried and burned. The primary combustion air is pressurized by the primary combustion blower 57, and a predetermined amount of air is distributed to each zone below 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 steam generation amount constant control by the boiler 59 to keep the operation generated steam amount for the turbine constant is performed by the primary combustion air amount adjusting device A and the secondary combustion air amount adjusting device. B controls to keep the total combustion gas calorific value constant. The zone air distribution in the lower part of the grate of the grate refuse moving device 56 is performed by a manual setting device, and Zone (zone) 1 air for correcting the distribution amount of the combustion air in the drying zone, the combustion zone, and the post-combustion zone. Setting 13, Zone 2 Air setting 14, Z
One (zone) 3 air setting 15 and Zone (zone) 4 air setting 16 are distributed at preset air amounts.
【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。The amount of waste, which is the fuel, is supplied to the dust supply device 5.
The dust feeding speed is adjusted by the dust feeding speed adjusting device 30 for adjusting the dust feeding speed of No. 5, and the dust is fed into the incinerator. The refuse introduced into the incinerator moves in the incinerator while being stirred by the on-grate refuse moving speed adjusting device 31, 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 stabilized, and the combustion rapidly increases or decreases, resulting in a large variation in the amount of generated steam and an increase in CO, NOx and dioxin. The main factor is the fluctuation of the amount of waste that stays in the incinerator. In other words, when the waste quality (wet waste) decreases, the amount of waste remaining in the incinerator increases, and the amount of combustion heat required to dry the waste becomes insufficient. It will be. In addition, if there is waste (dry waste), combustion is promoted, and thereafter, the amount of staying waste in the incinerator is reduced, the waste becomes dead, and the calorific value of steam 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, correction control is performed by a dust hold amount calculation corrector C. The incinerator has a primary combustion air amount detector 1 for detecting a primary combustion air amount, a secondary combustion air amount detector 2 for detecting a secondary combustion air amount, and a temperature of a gas discharged from a 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 the exhaust gas, and a refuse input weight detector 8 for detecting the input weight of the refuse 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 calculated based on the total combustion air operation unit 4, the total generated heat amount operation unit 6, and the inside of the furnace of the garbage hold amount operation corrector C. The calculation is performed by the combustion waste amount calculation unit 7, the waste 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, the furnace exhaust gas temperature detector 3 and the exhaust gas oxygen concentration detector 5 detect
It is calculated by the total generated calorie calculation unit 6. The detection result of the garbage input weight detector 8 is calculated by the integration and storage calculation unit 9 and output to the comparison calculation unit 10. The comparison operation unit 10 is output to the secondary combustion air amount correction unit 11, the lower furnace combustion air amount correction operation unit 12, and the feed speed correction operation 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 exhaust gas temperature detector 3 is calculated by a 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 adjustment device 21 is adjusted by the Zone 1 air amount setting 13. The calculation result of the feeding speed correction calculating unit 25 is corrected and calculated by the correction calculating unit 28, and the feeding speed is corrected by the feeding 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 supply speed correction calculating section 25 is calculated by the correction calculating section 29 by the on-grate dust moving speed setting 27 and corrects the on-grate dust moving speed by the on-grate dust moving speed adjusting device 31.
【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 calculation unit 18,
Control. Zone 3 air setting 15
It is calculated by the correction calculation unit 19 and controls the air amount adjusting device 23. Zone (zone) 4 is calculated by the correction operation unit 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 above-mentioned garbage hold amount calculation corrector C, the present 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 exhaust gas temperature at the furnace outlet. The amount of burning refuse is calculated, and the fluctuation amount of the refuse hold amount on the grate of the grate grate refuse moving device 56 is calculated based on the difference between the integrated value and the refuse amount measured by the crane 53. By this control method, the primary combustion air amount, the secondary combustion air amount, the dust supply device 5
In addition to adjusting the amount of dust supplied and the moving speed of the grate dust of the grate device 56, correction control of the combustion air flow 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 necessary for an incinerator in which it is desirable to keep a constant amount of steam generated for operation of a turbine, particularly in a large furnace with a generator.
【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, as described in the embodiments,
According to the present invention, based on the hold amount in the furnace, the air amount in the furnace, the flow ratio of each zone (increase the air amount in the drying zone for low-quality waste, and increase the air amount in the drying zone for high-quality waste) Combustion can be stabilized by adjusting the amount of refuse, the amount of refuse, stirring of grate refuse, and the moving speed to appropriate values, and the amount of unburned material remaining in the incinerated ash is reduced, The generation of clinker and the drying of the grate due to the rise can be prevented, and the generation of CO, NOx, and dioxin can also be suppressed.
【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 burning and the amount of waste to be input, the amount of waste retained in the incinerator increases, and the waste withers (the entire furnace burns and the fuel is no longer used). (A state in which no garbage is removed), so that 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 one 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 DESCRIPTION OF SYMBOLS 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 calorific value calculation unit 7 Furnace combustion waste calculation unit 8 Garbage injection Weight detection unit 10 Garbage hold amount calculation unit 30 Dust feeding speed adjustment device 31 Dust moving speed adjustment device on grate 52 Dust pit 53 Crane 55 Dust feeding 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。After accumulating garbage once in a garbage pit,
A pit-and-crane-type refuse receiving unit that is charged by a crane, a dust supply device that supplies refuse received from the refuse receiving unit into an incinerator, and a grate trash transfer that stirs and moves the refuse in the incinerator. A combustion control method for an incinerator, comprising: a device and an air amount adjusting device for diverting the amount of combustion air supplied to the grate refuse moving device to each of drying, burning, and post-combustion zones, and controlling combustion in the incinerator. At
The combustion air amount, the oxygen concentration in the exhaust gas, and the exhaust gas temperature at the outlet of the incinerator are detected, and the difference between the amount of waste currently burning by the combustion calculation and the amount of waste measured by the crane is calculated. Based on the fluctuation amount of the refuse hold amount in the furnace, the combustion air amount, the supply amount of the dust supply device, the grate refuse movement speed of the grate refuse transfer device, and the ratio of the combustion air flow to each zone. A combustion control method for an incinerator, comprising:
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 JPH07133917A (en) | 1995-05-23 |
| JP2973154B2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2205766C (en) * | 1996-09-12 | 2001-02-20 | Mitsubishi Denki Kabushiki Kaisha | Combustion system and operation control method thereof |
| JP3319327B2 (en) * | 1997-03-26 | 2002-08-26 | 日本鋼管株式会社 | Combustion control method and device for refuse incinerator |
-
1993
- 1993-11-11 JP JP5282255A patent/JP2973154B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07133917A (en) | 1995-05-23 |
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