JP2013178008A - Incineration system and method for controlling the same - Google Patents

Incineration system and method for controlling the same Download PDF

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JP2013178008A
JP2013178008A JP2012041721A JP2012041721A JP2013178008A JP 2013178008 A JP2013178008 A JP 2013178008A JP 2012041721 A JP2012041721 A JP 2012041721A JP 2012041721 A JP2012041721 A JP 2012041721A JP 2013178008 A JP2013178008 A JP 2013178008A
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incinerator
incinerated
feeder
internal pressure
furnace pressure
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JP5976337B2 (en
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Koji Namerisawa
幸司 滑澤
Tadayuki Motai
匡之 馬渡
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Mitsubishi Heavy Industries Environmental and Chemical Engineering Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an incineration system and a method for controlling the incineration system, capable of suppressing sudden furnace pressure fluctuation by controlling input (feed rate) of an object to be incinerated from a feeder into an incinerator.SOLUTION: An incineration system includes: a feeder 5 moved forward and backward at a predetermined stroke, and charging an object to be incinerated 1 onto a stoker 7 in an incinerator 3 while pushing out the object to be incinerated 1 from a feed table 4; an object to be incinerated height detection means 20 detecting a height level H of the object to be incinerated 1 in a hopper 2; a furnace pressure detection means 21 detecting furnace pressure in the incinerator 3; and a control means 23. When a detected result by the object to be incinerated height detection means 20 is lower than a predetermined height level set value, the control means 23 controls operation of the feeder 5 so as to increase the stroke, and when a detected result by the furnace pressure detection means 21 exceeds a predetermined furnace pressure set value, the control means 23 controls the operation of the feeder 5 so as to reduce the stroke.

Description

本発明は、焼却設備及び焼却設備の制御方法に関する。   The present invention relates to an incineration facility and a method for controlling the incineration facility.

例えば都市ごみなどの被焼却物を焼却処理するためのストーカ式の焼却設備は、被焼却物を一時的に貯留するホッパと、ホッパからシュート部を通じて連続的にフィードテーブル上に供給された被焼却物を所定のストロークで進退移動して焼却炉内に押し出し投入するフィーダと、焼却炉の底部側に、金属製の固定火格子とごみの流れ方向に往復運動する可動火格子を交互に配置してなるストーカと、ストーカの下方に設けられ、ストーカの各部に一次空気を供給するための風箱とを備えて構成されている。   For example, a stoker-type incineration facility for incinerating incineration materials such as municipal waste is a hopper that temporarily stores the incineration material, and incineration that is continuously supplied from the hopper through the chute to the feed table. A feeder that moves the object forward and backward with a predetermined stroke and pushes it into the incinerator, and a metal fixed grate and a movable grate that reciprocates in the direction of dust flow are alternately placed on the bottom side of the incinerator. And a wind box provided below the stoker for supplying primary air to each part of the stoker.

また、この種の焼却設備においては、焼却炉内のストーカが、フィーダによって押し出されて焼却炉内に落下した被焼却物を受け、被焼却物の水分を蒸発させるとともに一部熱分解するための乾燥ストーカ部と、下方の風箱から供給される一次空気によって、乾燥ストーカ部で乾燥した被焼却物に着火させ、揮発分および固定炭素分を燃焼させる燃焼ストーカ部と、燃焼ストーカ部で燃焼されずに通過してきた固定炭素分等の未燃分を完全に灰になるまで燃焼させる後燃焼ストーカ部とを備えている。また、後燃焼ストーカ部の出口に灰出し口が設けられ、この灰出し口を通じて焼却炉から灰を排出する。   Also, in this type of incineration equipment, the stoker in the incinerator receives the incinerated material that has been pushed out by the feeder and dropped into the incinerator, evaporates the moisture of the incinerated material, and partially decomposes it. By the primary air supplied from the dry stoker unit and the lower wind box, the incinerated material dried in the dry stoker unit is ignited, and the combustion stoker unit combusts volatile components and fixed carbon components, and is combusted in the combustion stoker unit. And a post-combustion stoker unit that burns unburned components such as fixed carbon components that have passed through until they completely become ash. Also, an ash outlet is provided at the outlet of the post-combustion stoker unit, and ash is discharged from the incinerator through this ash outlet.

また、焼却炉には、ストーカの上方に一次燃焼室が設けられ、一次燃焼室のさらに上方に二次燃焼室が設けられている。そして、一次燃焼室で生じた燃焼ガスが、二次空気と混合されて二次燃焼室に送られ、この二次燃焼室で燃焼ガス中の未燃成分を燃焼させる。また、二次燃焼室の後流に熱回収ボイラが接続して配設され、焼却炉の排熱を回収して有効利用できるように構成されている。さらに、熱回収ボイラで熱回収された排ガスは、減温塔、集塵器等の排ガス処理設備を順次通過して処理され、煙突から外部に排出される。   The incinerator is provided with a primary combustion chamber above the stoker and a secondary combustion chamber further above the primary combustion chamber. The combustion gas generated in the primary combustion chamber is mixed with the secondary air and sent to the secondary combustion chamber, where unburned components in the combustion gas are combusted in the secondary combustion chamber. In addition, a heat recovery boiler is connected to the downstream of the secondary combustion chamber, and is configured to recover and effectively use the exhaust heat of the incinerator. Further, the exhaust gas heat-recovered by the heat recovery boiler is sequentially processed through exhaust gas treatment equipment such as a temperature reducing tower and a dust collector, and is discharged from the chimney to the outside.

一方、焼却炉の排熱を熱回収ボイラによって効率的に回収し、蒸気をエネルギーとして有効利用するためには、焼却設備を安定的に操業することが必要であるが、焼却設備の焼却炉で焼却する被焼却物の質や量の変動、焼却炉に対する操作量の変動などの様々な要因によって、焼却炉の燃焼状態ひいては熱回収ボイラで生成する蒸気量が変化する。   On the other hand, in order to efficiently recover exhaust heat from an incinerator with a heat recovery boiler and effectively use steam as energy, it is necessary to operate the incinerator stably. The combustion state of the incinerator and thus the amount of steam generated in the heat recovery boiler changes due to various factors such as changes in the quality and quantity of the incinerator to be incinerated and fluctuations in the operation amount of the incinerator.

そして、従来、熱回収ボイラでの蒸発量に応じてフィーダの動作を制御して焼却炉への被焼却物の投入量を調整し、蒸発量を安定させるようにしている。すなわち、このフィーダの動作制御は、蒸発量の下限値を下回ったときに動作して、上限値を上回った場合に停止するようにしている。   Conventionally, the operation of the feeder is controlled in accordance with the amount of evaporation in the heat recovery boiler to adjust the amount of incinerated material to be charged into the incinerator, thereby stabilizing the amount of evaporation. That is, the operation control of the feeder operates when it falls below the lower limit value of the evaporation amount and stops when it exceeds the upper limit value.

しかしながら、このようにフィーダの動作制御を行なうと、被焼却物の供給が過剰になることがあり、カロリーが高い場合は蒸気量が過大に上昇(結果として炉内圧も変動)するという問題があった。また、カロリーの低い被焼却物を連続投入した場合、蒸発量が低下し、被焼却物が連続投入されているにも係らず、フィーダを連続動作させるという逆応答が生じるという問題もあった。さらに、蒸発量を短時間で安定させるために、また、逆応答を防止するために空気流量を制御することも考えられるが、この場合には、炉内圧(焼却炉の内部圧力)が不安定になってしまう。   However, when the feeder operation is controlled in this way, the supply of incinerated materials may become excessive, and there is a problem that the amount of steam increases excessively (as a result, the furnace pressure also fluctuates) when calories are high. It was. In addition, when incinerated materials with low calories are continuously charged, there is a problem in that the amount of evaporation decreases and a reverse response occurs in which the feeder is operated continuously despite the incinerated materials being continuously charged. Furthermore, it is conceivable to control the air flow rate in order to stabilize the evaporation amount in a short time and to prevent a reverse response, but in this case, the furnace pressure (internal pressure of the incinerator) is unstable. Become.

これに対し、特許文献1では、熱回収ボイラの蒸発量の偏差値及び制限値に応じ、フィーダの動作制御、一次空気の圧力制御、二次空気の流量制御及び焼却炉の炉内圧の制御を行い、蒸発量及び炉内圧を安定させるようにしている。また、フィーダの速度制御手段の制限値は、幅を持って設定されているため、フィーダの速度制御、すなわち、被焼却物の投入量の細かい制御が可能とされている。   On the other hand, in Patent Document 1, according to the deviation value and the limit value of the evaporation amount of the heat recovery boiler, the operation control of the feeder, the primary air pressure control, the secondary air flow rate control, and the in-furnace pressure control are performed. To evaporate and stabilize the furnace pressure. Moreover, since the limit value of the speed control means of the feeder is set with a width, it is possible to control the speed of the feeder, that is, to control the input amount of the incinerated material.

特開平7−98108号公報JP 7-98108 A

しかしながら、一次空気の圧力や二次空気の流量を調整して炉内圧の変動を抑制するには限界がある。
すなわち、フィーダが前進して投入する一回の被焼却物の投入量が大きい場合やフィードテーブルからストーカの乾燥ストーカ部までの落下距離が大きい場合(落差が大きい場合やストーカ上の被焼却物の層厚が薄い場合)には、フィーダから焼却炉内への被焼却物の投入時に炉内圧の急激な変動が発生して焼却設備の安定運転に支障をきたすおそれがあるが、上記従来技術のように一次空気の圧力や二次空気の流量を調整する方法では、このような急激な炉内圧の変動を抑制することができない。
However, there is a limit in suppressing fluctuations in the furnace pressure by adjusting the pressure of the primary air and the flow rate of the secondary air.
In other words, when the input amount of incineration material to be fed forward is large, or when the drop distance from the feed table to the dry stoker part of the stalker is large (if the drop is large or the incinerated material on the stalker If the layer thickness is thin), there is a risk of sudden fluctuations in the furnace pressure when the incinerated material is introduced from the feeder into the incinerator, which may hinder stable operation of the incinerator. As described above, the method of adjusting the pressure of the primary air and the flow rate of the secondary air cannot suppress such a rapid fluctuation in the furnace pressure.

本発明は、上記事情に鑑み、フィーダから焼却炉内への被焼却物の投入量(供給量)を制御することによって急激な炉内圧の変動を抑制できるようにした焼却設備及び焼却設備の制御方法を提供することを目的とする。   In view of the above circumstances, the present invention controls incineration equipment and incineration equipment capable of suppressing rapid fluctuations in the in-furnace pressure by controlling the input amount (supply amount) of the incinerated material from the feeder into the incinerator. It aims to provide a method.

本発明の焼却設備は、被焼却物が一時的に貯留され、該被焼却物を連続的にフィードテーブル上に供給するためのホッパと、前記被焼却物を燃焼させる焼却炉と、前記フィードテーブル上を所定のストロークで進退移動し、前記フィードテーブルから前記被焼却物を押し出して前記焼却炉内のストーカ上に投入するフィーダと、前記ホッパ内の前記被焼却物の高さレベルを検出する被焼却物高さ検出手段と、前記焼却炉の炉内圧を検出する炉内圧検出手段と、前記被焼却物高さ検出手段と前記炉内圧検出手段の各検出結果に基づいて、前記フィーダの動作を制御する制御手段とを備え、前記制御手段が、前記フィーダが予め設定した回数動作した後の前記被焼却物高さ検出手段の検出結果が予め設定した高さレベルの設定値を下回ったときに、前記ストロークを増加させるように前記フィーダの動作を制御し、前記炉内圧検出手段の検出結果が予め設定した炉内圧の設定値を上回ったときに、前記ストロークを減少させるように前記フィーダの動作を制御するように構成されていることを特徴とする。   An incineration facility according to the present invention includes a hopper for temporarily storing an incinerated material and continuously supplying the incinerated material onto a feed table, an incinerator for burning the incinerated material, and the feed table. A feeder that moves forward and backward with a predetermined stroke, pushes out the incinerated object from the feed table and puts it on a stalker in the incinerator, and an object to detect the height level of the incinerated object in the hopper. Based on the detection results of the incinerator height detection means, the furnace pressure detection means for detecting the furnace pressure of the incinerator, the incinerator height detection means and the furnace pressure detection means, the operation of the feeder is determined. Control means for controlling, when the detection result of the incinerated object height detection means after the feeder has been operated a predetermined number of times is less than a preset value of the height level The operation of the feeder is controlled so as to increase the stroke, and when the detection result of the furnace pressure detection means exceeds a preset value of the furnace pressure, the operation of the feeder is reduced so as to decrease the stroke. It is comprised so that it may control.

本発明の焼却設備の制御方法は、被焼却物が一時的に貯留され、該被焼却物を連続的にフィードテーブル上に供給するためのホッパと、前記被焼却物を燃焼させる焼却炉と、前記フィードテーブル上を所定のストロークで進退移動し、前記フィードテーブルから前記被焼却物を押し出して前記焼却炉内のストーカ上に投入するフィーダと、前記ホッパ内の前記被焼却物の高さレベルを検出する被焼却物高さ検出手段と、前記焼却炉の炉内圧を検出する炉内圧検出手段とを備えてなる焼却設備を制御する方法であって、前記フィーダが予め設定した回数動作した後の前記被焼却物高さ検出手段の検出結果が予め設定した高さレベルの設定値を下回ったときに、前記ストロークを増加させるように前記フィーダの動作を制御し、前記炉内圧検出手段の検出結果が予め設定した炉内圧の設定値を上回ったときに、前記ストロークを減少させるように前記フィーダの動作を制御することを特徴とする。   The incinerator control method according to the present invention includes a hopper for temporarily storing the incinerated material, and continuously supplying the incinerated material on a feed table, an incinerator for burning the incinerated material, A feeder that moves forward and backward on the feed table with a predetermined stroke, pushes out the incinerated material from the feed table and puts it on a stalker in the incinerator, and sets the height level of the incinerated material in the hopper. A method for controlling incineration equipment comprising an incinerator height detecting means for detecting and an in-furnace pressure detecting means for detecting an in-furnace pressure of the incinerator, wherein the feeder is operated a predetermined number of times. When the detection result of the incinerated object height detection means falls below a preset value of a preset height level, the operation of the feeder is controlled so as to increase the stroke, and the furnace pressure detection means When the detection result exceeds the set value of the furnace pressure set in advance, and controls the operation of the feeder to reduce the stroke.

これらの発明においては、フィーダの1回の前進動作で焼却炉に投入する被焼却物の投入量が少なくなり過ぎないようにしつつ、フィーダのストロークを小さくしてフィーダの1回の前進動作で焼却炉に投入する被焼却物の投入量を抑えることができ、被焼却物の投入時に焼却炉の炉内圧(焼却炉の内部圧力)が急激に変動することを抑制することが可能になる。   In these inventions, the amount of incinerated material to be put into the incinerator is not reduced too much by a single forward movement of the feeder, and the feeder stroke is reduced and the incineration is performed by a single forward movement of the feeder. It is possible to suppress the input amount of the incinerator to be charged into the furnace, and it is possible to suppress a rapid change in the furnace pressure (internal pressure of the incinerator) of the incinerator when the incinerator is charged.

また、このとき、ストロークを小さくした場合であっても、ホッパ内の被焼却物の高さレベル(ホッパに貯留した被焼却物の上面高さ)を捉えることで、被焼却物の質の変化などによるフィーダの空打ち、すなわち、ストローク分前進したにも係らず、フィードテーブル上の被焼却物が圧縮されるなどして焼却炉内に投入されない状態を確認し、これを防ぐことが可能になり、連続的に安定して被焼却物を焼却炉内に投入することが可能になる。   At this time, even if the stroke is reduced, the quality level of the incineration object can be changed by grasping the height level of the incineration object in the hopper (the upper surface height of the incineration object stored in the hopper). It is possible to check the state where the incinerated material on the feed table is compressed and not put into the incinerator even though the feeder has been blown by a stroke, etc. Thus, it becomes possible to continuously incinerate the incinerated material into the incinerator.

さらに、ストロークを小さくし、フィーダの1回の前進動作で焼却炉に投入する被焼却物の投入量を抑えることで、ストーカ上の被焼却物の厚さを所定の厚さが、厚くなり過ぎることを防止できる。これにより、焼却炉に投入した被焼却物の急激な燃焼を抑えることができ、この点からも、焼却炉の炉内圧の変動を抑制することが可能になる。   Furthermore, by reducing the stroke and suppressing the amount of incinerated material to be charged into the incinerator by one forward movement of the feeder, the predetermined thickness of the incinerated material on the stoker becomes too thick. Can be prevented. Thereby, it is possible to suppress rapid combustion of the incinerated material charged into the incinerator, and also from this point, it is possible to suppress fluctuations in the in-furnace pressure of the incinerator.

また、本発明の焼却設備においては、前記ストーカの下方から一次空気を供給するための風箱の内部圧力を検出する風箱内圧検出手段を備え、前記制御手段が、前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の上限値を上回ったときに、ストーカ速度を増加させるように前記ストーカの動作を制御し、前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の下限値を下回ったときに、ストーカ速度を減少させるように前記ストーカの動作を制御するように構成されていることが望ましい。   In the incineration facility of the present invention, the incinerator includes an air box internal pressure detecting means for detecting an internal pressure of the air box for supplying primary air from below the stoker, and the control means includes the air box internal pressure detecting means. When the detection result exceeds a preset upper limit value of the internal pressure of the wind box, the operation of the stalker is controlled so as to increase the stalker speed, and the detection result of the wind box internal pressure detection means is set in advance. It is desirable that the operation of the stalker is controlled so as to decrease the stalker speed when it falls below the lower limit value of the internal pressure.

また、本発明の焼却設備の制御方法においては、前記焼却設備が前記ストーカの下方から一次空気を供給するための風箱の内部圧力を検出する風箱内圧検出手段を備え、前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の上限値を上回ったときに、ストーカ速度を増加させるように前記ストーカの動作を制御し、前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の下限値を下回ったときに、ストーカ速度を減少させるように前記ストーカの動作を制御することが望ましい。   In the incineration equipment control method of the present invention, the incineration equipment further comprises an air box internal pressure detecting means for detecting an internal pressure of the air box for supplying primary air from below the stoker, and the wind box internal pressure detection When the detection result of the means exceeds the preset upper limit value of the internal pressure of the wind box, the operation of the stalker is controlled to increase the stalker speed, and the detection result of the wind box internal pressure detection means is preset. It is desirable to control the operation of the stoker so as to decrease the stoker speed when the lower limit value of the internal pressure of the wind box is lowered.

これらの発明においては、風箱の内部圧力を捉え、これに基づいてストーカ速度、すなわち、可動火格子の往復運動速度を制御することで、ストーカ上の被焼却物の層厚を平均化することができ、ストーカ上の被焼却物の厚さを所定の厚さで維持し、厚くなり過ぎたり、薄くなり過ぎることを防止できる。これにより、より確実に、焼却炉に投入した被焼却物の急激な燃焼を抑えることができ、この点からも、焼却炉の炉内圧の変動を抑制することが可能になる。   In these inventions, the layer thickness of the incinerated material on the stoker is averaged by capturing the internal pressure of the wind box and controlling the stoker speed, that is, the reciprocating speed of the movable grate based on this. It is possible to maintain the thickness of the incinerated object on the stoker at a predetermined thickness, and to prevent it from becoming too thick or too thin. As a result, it is possible to more reliably suppress the rapid combustion of the incinerated material charged into the incinerator, and also from this point, it is possible to suppress fluctuations in the in-furnace pressure of the incinerator.

本発明の焼却設備及び焼却設備の制御方法によれば、確実に急激な炉内圧の変動を抑制することができ、焼却設備を安定的に運転・操業することが可能になる。また、焼却炉の排熱を熱回収ボイラによって効率的に回収して有効利用することも可能になる。   According to the incineration facility and the method for controlling the incineration facility of the present invention, it is possible to surely suppress rapid fluctuations in the furnace pressure, and to stably operate and operate the incineration facility. In addition, the exhaust heat from the incinerator can be efficiently recovered and effectively used by the heat recovery boiler.

本発明の一実施形態に係る焼却設備を示す図である。It is a figure which shows the incineration equipment which concerns on one Embodiment of this invention. 本発明の一実施形態に係る焼却設備の制御方法を示すフロー図である。It is a flowchart which shows the control method of the incineration equipment which concerns on one Embodiment of this invention. 本発明の一実施形態に係る焼却設備の制御方法を示すフロー図である。It is a flowchart which shows the control method of the incineration equipment which concerns on one Embodiment of this invention.

以下、図1から図3を参照し、本発明の一実施形態に係る焼却設備及び焼却設備の制御方法について説明する。なお、本実施形態は、都市ごみなどの被焼却物を焼却処理するための焼却設備及びこの焼却設備の制御方法に関するものである。   Hereinafter, an incineration facility and an incineration facility control method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In addition, this embodiment is related with the incineration equipment for incinerating incineration objects, such as a municipal waste, and the control method of this incineration equipment.

本実施形態の焼却設備Aは、図1に示すように、被焼却物1を一時的に貯留するホッパ(ホッパシュート)2と、被焼却物1を燃焼させる焼却炉3と、ホッパ2からシュート部2aを通じて連続的にフィードテーブル4上に供給された被焼却物1を所定のストロークで進退移動して焼却炉3内に押し出し投入するフィーダ5と、フィーダ5をフィードテーブル4上で進退移動させるためのフィーダ駆動装置6と、焼却炉3の底部側に、金属製の固定火格子とごみの流れ方向に往復運動する可動火格子を交互に配置してなるストーカ7と、ストーカ7の下方に設けられ、送風機8からの一次空気をストーカ7の各部に供給するための風箱9とを備えて構成されている。ここで、本実施形態において、フィーダ5の最大ストローク量は例えば400〜500mmとされている。   As shown in FIG. 1, the incineration facility A of the present embodiment has a hopper (hopper chute) 2 for temporarily storing the incinerated object 1, an incinerator 3 for burning the incinerated object 1, and a chute from the hopper 2. Feeder 5 continuously moving on the feed table 4 through the section 2a is moved forward and backward with a predetermined stroke and pushed into the incinerator 3, and the feeder 5 is moved back and forth on the feed table 4. A feeder drive device 6 for the above, a stalker 7 in which a metal fixed grate and a movable grate reciprocating in the direction of dust flow are alternately arranged on the bottom side of the incinerator 3, and below the stalker 7 And an air box 9 for supplying primary air from the blower 8 to each part of the stoker 7. Here, in this embodiment, the maximum stroke amount of the feeder 5 is set to 400 to 500 mm, for example.

また、ストーカ7は、フィーダ5によって押し出されて焼却炉3内に落下した被焼却物1を受け、この被焼却物1の水分を蒸発させるとともに一部熱分解するための乾燥ストーカ部と、下方の風箱9から供給される一次空気によって、乾燥ストーカ部で乾燥した被焼却物1に着火させ、揮発分および固定炭素分を燃焼させる燃焼ストーカ部と、燃焼ストーカ部で燃焼されずに通過してきた固定炭素分等の未燃分を完全に灰になるまで燃焼させる後燃焼ストーカ部とを備えている。また、後燃焼ストーカ部の出口に灰出し口10が設けられ、この灰出し口10を通じて焼却炉3から灰を排出するように構成されている。   In addition, the stoker 7 receives the incinerated object 1 pushed out by the feeder 5 and dropped into the incinerator 3, evaporates the moisture of the incinerated object 1 and partially decomposes it. The primary air supplied from the air box 9 ignites the incinerated material 1 dried in the dry stalker unit, and burns the volatile component and the fixed carbon component without passing through the combustion stalker unit. And a post-combustion stoker unit that burns unburned components such as fixed carbon to completely ash. Further, an ash outlet 10 is provided at the outlet of the post-combustion stoker unit, and ash is discharged from the incinerator 3 through the ash outlet 10.

また、焼却炉3には、ストーカ7の上方に一次燃焼室と二次燃焼室からなる燃焼室11が設けられ、二次燃焼室の後流に熱回収ボイラ12が接続して配設されている。さらに、焼却炉3には、燃焼室11に二次空気を供給する送風機13が接続されている。また、熱回収ボイラ12で熱回収された排ガスは、排ガス処理設備14の減温塔、集塵器などを順次通過して処理され、煙突15から外部に排出される。また、このとき、本実施形態では、排ガス処理設備14と煙突15の間の排気経路にIDF(誘引送風機)16が設けられ、このIDF16の入口に設けられたIDF入口ダンパ17を開閉制御することによって焼却炉3の炉内圧(焼却炉3の内部圧力)が調整できるように構成されている。   Further, the incinerator 3 is provided with a combustion chamber 11 including a primary combustion chamber and a secondary combustion chamber above the stoker 7, and a heat recovery boiler 12 connected to the downstream of the secondary combustion chamber. Yes. Furthermore, a blower 13 for supplying secondary air to the combustion chamber 11 is connected to the incinerator 3. Further, the exhaust gas heat recovered by the heat recovery boiler 12 is sequentially processed through a temperature reducing tower, a dust collector and the like of the exhaust gas processing facility 14 and discharged from the chimney 15 to the outside. At this time, in this embodiment, an IDF (induction blower) 16 is provided in the exhaust path between the exhaust gas treatment facility 14 and the chimney 15, and the IDF inlet damper 17 provided at the inlet of the IDF 16 is controlled to open and close. Thus, the in-furnace pressure of the incinerator 3 (internal pressure of the incinerator 3) can be adjusted.

さらに、本実施形態の焼却設備Aは、ホッパ2内の被焼却物1の高さレベル(上面高さの位置)Hを検出する被焼却物高さ検出手段20と、焼却炉3の炉内圧を検出する炉内圧検出手段21と、風箱9の内部圧力を検出する風箱内圧検出手段22とを備えて構成されている。また、被焼却物高さ検出手段20と炉内圧検出手段21の各検出結果に基づいてフィーダ5の動作(フィーダ駆動装置6の駆動)を制御し、また、風箱内圧検出手段22の検出結果に基づいてストーカ7の可動火格子の往復動作(ストーカ速度)を制御する制御手段23を備えている。   Further, the incineration facility A of the present embodiment includes an incinerator height detection means 20 for detecting the height level (position of the upper surface height) H of the incinerator 1 in the hopper 2 and the in-furnace pressure of the incinerator 3. The furnace internal pressure detecting means 21 for detecting the internal pressure and the wind box internal pressure detecting means 22 for detecting the internal pressure of the wind box 9 are provided. Further, the operation of the feeder 5 (drive of the feeder drive device 6) is controlled based on the detection results of the incinerated object height detection means 20 and the furnace pressure detection means 21, and the detection result of the wind box internal pressure detection means 22 The control means 23 for controlling the reciprocating motion (stoker speed) of the movable grate of the stalker 7 is provided.

ここで、本実施形態では、炉内圧検出手段21が燃焼室11の第1燃焼室に設けられているが、この炉内圧検出手段21は、フィーダ5によって焼却炉3の内部に被焼却物1が投入落下することで炉内圧が変動する領域に設けられていればよい。また、焼却炉3の内部に複数の炉内圧検出手段21を設け、複数箇所で炉内圧を検出するようにしてもよい。   Here, in the present embodiment, the furnace pressure detection means 21 is provided in the first combustion chamber of the combustion chamber 11, and this furnace pressure detection means 21 is placed inside the incinerator 3 by the feeder 5. May be provided in a region where the pressure in the furnace fluctuates as a result of charging and dropping. Further, a plurality of furnace pressure detecting means 21 may be provided inside the incinerator 3 to detect the furnace pressure at a plurality of locations.

さらに、本実施形態では、風箱内圧検出手段22がストーカ7の上流側(被焼却物1の投入口側)から2番目の風箱9の内圧を検出するように設けられているが、どの風箱9に風箱内圧検出手段22を設けるかは適宜選択すればよく、また、複数の風箱9にそれぞれ風箱内圧検出手段22を設け、複数の風箱9の内部圧力を検出するようにしてもよい。   Furthermore, in this embodiment, the wind box internal pressure detection means 22 is provided so as to detect the internal pressure of the second wind box 9 from the upstream side of the stalker 7 (the inlet side of the incinerated object 1). It is only necessary to appropriately select whether the windbox 9 is provided with the windbox internal pressure detection means 22, and the windbox internal pressure detection means 22 is provided for each of the plurality of windboxes 9 to detect the internal pressures of the plurality of windboxes 9. It may be.

次に、上記構成からなる本実施形態の焼却設備Aを制御する方法について説明するとともに、本実施形態の焼却設備A及びこの焼却設備Aの作用及び効果について説明する。   Next, a method for controlling the incineration facility A of the present embodiment having the above-described configuration will be described, and the operation and effect of the incineration facility A of the present embodiment and the incineration facility A will be described.

図2に示すように、本実施形態の焼却設備Aにおいては、まず、制御手段23が、被焼却物高さ検出手段20の検出結果を受け、フィーダ5が予め設定した回数動作した後のホッパ2内の被焼却物1の高さレベルHの検出結果と予め設定した高さレベルの設定値とを比較する。そして、高さレベルの検出結果が高さレベル設定値(予め設定した高さレベルの変動割合)を下回っている場合には、制御手段23がフィーダ駆動装置6を制御し、フィーダ5のストロークが増加するように制御する。すなわち、フィーダ5が前進して投入する1回の被焼却物1の投入量が多くなるように制御する。   As shown in FIG. 2, in the incineration facility A of the present embodiment, first, the control means 23 receives the detection result of the incinerated object height detection means 20, and the hopper after the feeder 5 has been operated a preset number of times. The detection result of the height level H of the incinerated object 1 in 2 is compared with a preset value of the height level. When the detection result of the height level is lower than the height level set value (a preset fluctuation level of the height level), the control means 23 controls the feeder driving device 6 and the stroke of the feeder 5 is Control to increase. In other words, control is performed so that the input amount of the incinerated object 1 that is fed by the feeder 5 is increased.

また、制御手段23は、炉内圧検出手段21の結果を受け、この炉内圧の検出結果と予め設定した炉内圧の設定値とを比較する。そして、炉内圧の検出結果が予め設定した炉内圧設定値を上回っている場合には、制御手段23がフィーダ駆動装置6を制御し、フィーダ5の動作をストロークが減少するように、すなわち、フィーダ5が前進して投入する1回の被焼却物1の投入量が少なくなるように制御する。   Further, the control means 23 receives the result of the furnace pressure detection means 21 and compares the detection result of the furnace pressure with a preset value of the furnace pressure. When the detection result of the furnace pressure exceeds the preset furnace pressure setting value, the control means 23 controls the feeder driving device 6 so that the stroke of the feeder 5 is reduced, that is, the feeder. Control is performed so that the input amount of the incinerator 1 to be injected once is increased by 5.

より具体的に、本実施形態の焼却設備Aの制御方法においては、まず、図1及び図2に示すように、フィーダ5が何回前進動作を行なったかをカウントしているフィーダカウントをリセットし、リセット後のフィーダ5の前進動作をカウントする。すなわち、ホッパ2からシュート部2aを通じて連続的にフィードテーブル4上に供給された被焼却物1を焼却炉3内に投入した回数をカウントする。   More specifically, in the method of controlling the incineration facility A of the present embodiment, first, as shown in FIGS. 1 and 2, the feeder count that counts how many times the feeder 5 has moved forward is reset. The forward movement of the feeder 5 after reset is counted. That is, the number of times that the incinerated object 1 continuously supplied from the hopper 2 through the chute 2a onto the feed table 4 is put into the incinerator 3 is counted.

そして、フィーダ5が予め設定した回数、例えば5回前進動作したら、制御手段23が、被焼却物高さ検出手段20によって検出したフィーダカウントのリセット時のホッパ2内の被焼却物1の高さレベルHと、フィーダ5が予め設定した回数前進動作した後の被焼却物1の高さレベルHとを比較する。また、これとともに制御手段23が、フィーダ5の前進動作による高さレベルの変動割合を求め、この高さレベルの変動割合が予め設定した高さレベルの変動割合設定値、例えば10%よりも小さい場合には、ストロークを所定量、例えば50mm増加させるようにフィーダ駆動装置6を制御する。   When the feeder 5 moves forward a preset number of times, for example, 5 times, the height of the incinerated object 1 in the hopper 2 at the time when the control unit 23 resets the feeder count detected by the incinerated object height detecting unit 20. The level H is compared with the height level H of the incinerated object 1 after the feeder 5 has moved forward a preset number of times. At the same time, the control means 23 obtains the fluctuation ratio of the height level due to the forward movement of the feeder 5, and the fluctuation ratio of the height level is smaller than a preset fluctuation ratio of the height level, for example, 10%. In this case, the feeder driving device 6 is controlled so as to increase the stroke by a predetermined amount, for example, 50 mm.

ここで、フィーダ5のストローク量の制御は、例えば、最大ストローク量が400〜500mmの本実施形態のフィーダ5の場合、150〜500mmのストローク範囲で行なうことが好ましい。   Here, the control of the stroke amount of the feeder 5 is preferably performed in a stroke range of 150 to 500 mm, for example, in the case of the feeder 5 of the present embodiment having a maximum stroke amount of 400 to 500 mm.

また、フィーダ5の前進動作によって被焼却物1を焼却炉3内に投入したときの炉内圧が炉内圧検出手段21によって検出され、このときの検出結果を制御手段23が予め設定した炉内圧設定値、例えば−10Paと比較し、炉内圧設定値を上回る炉内圧が検出された場合には、ストロークを所定量、例えば50mm減少させるようにフィーダ駆動装置6を制御する。また、ストロークを変更した後、タイマーによって、ある一定時間は変更したストロークを保つようにする。   Further, the furnace pressure when the incinerated object 1 is put into the incinerator 3 by the forward movement of the feeder 5 is detected by the furnace pressure detecting means 21, and the detection result at this time is set in the furnace pressure preset by the control means 23. When a furnace pressure exceeding a set value, for example, −10 Pa, is detected, the feeder driving device 6 is controlled so as to reduce the stroke by a predetermined amount, for example, 50 mm. Further, after the stroke is changed, the changed stroke is maintained for a certain period of time by a timer.

なお、フィーダ5によって被焼却物1を投入する動作が行なわれていないときの焼却炉3の炉内圧は例えば−100Pa程度であり、この炉内圧がフィーダ5の動作によって被焼却物1を投入すると変動し、本実施形態では、被焼却物1の投入時に例えば−10Paの炉内圧設定値よりも炉内圧が大きくなったときに、ストロークを減少させる。   Note that the in-furnace pressure of the incinerator 3 when the operation of feeding the incinerator 1 by the feeder 5 is not performed is about −100 Pa, for example, and the in-furnace 1 is thrown by the operation of the feeder 5. In this embodiment, the stroke is reduced when the furnace pressure becomes larger than the furnace pressure setting value of, for example, −10 Pa when the incinerated object 1 is charged.

これにより、ホッパ2内の被焼却物1の高さレベルHを捉え、フィーダ5の1回の前進動作で焼却炉3に投入する被焼却物1の投入量が少なくなり過ぎないようにしつつ、フィーダ5のストロークを小さくして、被焼却物1が投入されるときに焼却炉3の炉内圧が急激に変動することが抑制される。   Thereby, while catching the height level H of the incinerated object 1 in the hopper 2, the amount of the incinerated object 1 to be introduced into the incinerator 3 by one forward movement of the feeder 5 is not reduced too much, When the stroke of the feeder 5 is reduced, the in-furnace pressure of the incinerator 3 is suppressed from abruptly changing when the incinerated object 1 is introduced.

一方、本実施形態の焼却設備Aの制御方法においては、図1及び図3に示すように、風箱内圧検出手段22によって検出された風箱9の内部圧力の検出結果が制御手段23に送られ、制御手段23が、風箱9の内部圧力の検出結果と、予め設定した風箱9の内部圧力の上限値とを比較する。そして、風箱9の内部圧力の検出結果が予め設定した風箱9の内部圧力の上限値を上回っている場合には、ストーカ速度、すなわち、ストーカ7の可動火格子の往復動作速度を所定量、例えば3%増加させる。   On the other hand, in the control method for the incineration facility A of the present embodiment, the detection result of the internal pressure of the wind box 9 detected by the wind box internal pressure detection means 22 is sent to the control means 23 as shown in FIGS. Then, the control means 23 compares the detection result of the internal pressure of the wind box 9 with a preset upper limit value of the internal pressure of the wind box 9. When the detection result of the internal pressure of the wind box 9 exceeds the preset upper limit value of the internal pressure of the wind box 9, the stoker speed, that is, the reciprocating speed of the movable grate of the stoker 7 is set to a predetermined amount. For example, increase by 3%.

また、風箱9の内部圧力の検出結果が予め設定した風箱9の内部圧力の上限値を下回っている場合には、制御手段23が、風箱9の内部圧力の検出結果と、予め設定した風箱9の内部圧力の下限値とを比較する。そして、風箱9の内部圧力の検出結果が予め設定した風箱9の内部圧力の下限値を下回っている場合には、ストーカ速度を所定量、例えば3%減少させる。   When the detection result of the internal pressure of the wind box 9 is lower than the preset upper limit value of the internal pressure of the wind box 9, the control means 23 sets the detection result of the internal pressure of the wind box 9 and the preset value. The lower limit value of the internal pressure of the air box 9 is compared. And when the detection result of the internal pressure of the wind box 9 is less than the preset lower limit value of the internal pressure of the wind box 9, the stalker speed is decreased by a predetermined amount, for example, 3%.

ここで、ストーカ7上の被焼却物1の層厚が大きいほど、被焼却物1が一次空気の流通抵抗が大きくなり、風箱9の内部圧力が上昇する。そして、上記のように風箱9の内部圧力が上限値を上回ってストーカ速度を増加させると、可動火格子が速く往復することによってストーカ7上の被焼却物1の移動が促進され、層厚が薄くなり、風箱9の内部圧力が低下する。また、風箱9の内部圧力が下限値を下回ってストーカ速度を減少させると、可動火格子がゆっくり往復することによってストーカ7上の被焼却物1の移動が抑えられ、層厚が厚くなり、風箱9の内部圧力が上昇する。   Here, the greater the layer thickness of the incinerator 1 on the stoker 7, the greater the flow resistance of the primary air in the incinerator 1 and the internal pressure of the wind box 9 increases. When the internal pressure of the wind box 9 exceeds the upper limit value and the stalker speed is increased as described above, the movable grate reciprocates quickly, thereby promoting the movement of the incinerated object 1 on the stalker 7 and the layer thickness. Becomes thinner and the internal pressure of the wind box 9 decreases. Further, when the internal pressure of the wind box 9 falls below the lower limit value and the stalker speed is reduced, the movable grate slowly reciprocates, thereby suppressing the movement of the incinerated object 1 on the stalker 7 and increasing the layer thickness. The internal pressure of the wind box 9 increases.

これにより、風箱9の内部圧力を捉え、ストーカ7上の被焼却物1の層厚が平均化されるため、被焼却物1の急激な燃焼が抑えられ、この点からも、炉内圧の変動が抑制されることになる。   As a result, the internal pressure of the wind box 9 is captured and the layer thickness of the incinerated object 1 on the stoker 7 is averaged, so that rapid combustion of the incinerated object 1 is suppressed. Variation will be suppressed.

したがって、本実施形態の焼却設備A及び焼却設備Aの制御方法においては、フィーダ5の1回の前進動作で焼却炉3に投入する被焼却物1の投入量が少なくなり過ぎないようにしつつ、フィーダ5のストロークを小さくしてフィーダ5の1回の前進動作で焼却炉3に投入する被焼却物1の投入量を抑えることができ、被焼却物1の投入時に焼却炉3の炉内圧が急激に変動することを抑制することが可能になる。   Therefore, in the control method of the incineration equipment A and the incineration equipment A of the present embodiment, while making sure that the input amount of the incinerator 1 to be input to the incinerator 3 by one forward operation of the feeder 5 is not too small, By reducing the stroke of the feeder 5, the amount of the incinerated object 1 to be charged into the incinerator 3 by one forward movement of the feeder 5 can be suppressed, and the in-furnace pressure of the incinerator 3 is reduced when the incinerated object 1 is charged. It is possible to suppress sudden fluctuations.

また、このとき、ストロークを小さくした場合であっても、ホッパ2内の被焼却物1の高さレベルHを捉えることで、被焼却物1の質の変化などによるフィーダ5の空打ち、すなわち、ストローク分前進したにも係らず、フィードテーブル4上の被焼却物1が圧縮されるなどして焼却炉3内に投入されない状態を確認し、これを防ぐことが可能になり、連続的に安定して被焼却物1を焼却炉3内に投入することが可能になる。   At this time, even if the stroke is reduced, by catching the height level H of the incinerated object 1 in the hopper 2, the feeder 5 is emptied due to a change in the quality of the incinerated object 1, that is, In spite of advancing by the stroke, it is possible to check the state that the incinerated object 1 on the feed table 4 is not put into the incinerator 3 due to compression or the like, and this can be prevented continuously. The incinerated object 1 can be stably put into the incinerator 3.

さらに、ストロークを小さくし、フィーダ5の1回の前進動作で焼却炉3に投入する被焼却物1の投入量を抑えることで、ストーカ7上の被焼却物1の厚さが、厚くなり過ぎることを防止できる。これにより、焼却炉3に投入した被焼却物1の急激な燃焼を抑えることができ、この点からも、焼却炉3の炉内圧の変動を抑制することが可能になる。   Furthermore, the thickness of the incinerated object 1 on the stoker 7 becomes too thick by reducing the stroke and suppressing the amount of the incinerated object 1 to be introduced into the incinerator 3 by one forward movement of the feeder 5. Can be prevented. Thereby, rapid combustion of the incinerator 1 thrown into the incinerator 3 can be suppressed, and also from this point, it is possible to suppress fluctuations in the in-furnace pressure of the incinerator 3.

また、風箱9の内部圧力を捉え、これに基づいてストーカ速度を制御することで、ストーカ7上の被焼却物1の層厚を平均化することができ、ストーカ7上の被焼却物1の厚さを所定の厚さで維持し、厚くなり過ぎたり、薄くなり過ぎることを防止できる。これにより、より確実に、焼却炉3に投入した被焼却物1の急激な燃焼を抑えることができ、この点からも、焼却炉3の炉内圧の変動を抑制することが可能になる。   Further, by capturing the internal pressure of the wind box 9 and controlling the stalker speed based on this, the layer thickness of the incinerated object 1 on the stalker 7 can be averaged, and the incinerated object 1 on the stalker 7 can be averaged. Can be maintained at a predetermined thickness to prevent it from becoming too thick or too thin. As a result, it is possible to more reliably suppress the rapid combustion of the incinerated object 1 charged into the incinerator 3, and also from this point, it is possible to suppress fluctuations in the in-furnace pressure of the incinerator 3.

よって、本実施形態の焼却設備A及び焼却設備Aの制御方法によれば、確実に急激な炉内圧の変動を抑制することができ、焼却設備Aを安定的に運転・操業することが可能になる。また、焼却炉3の排熱を熱回収ボイラ12によって効率的に回収して有効利用することも可能になる。   Therefore, according to the control method of the incineration facility A and the incineration facility A of the present embodiment, it is possible to reliably suppress a rapid fluctuation of the in-furnace pressure, and to stably operate and operate the incineration facility A. Become. Further, the exhaust heat from the incinerator 3 can be efficiently recovered and effectively used by the heat recovery boiler 12.

以上、本発明に係る焼却設備及び焼却設備の制御方法の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。   As mentioned above, although one embodiment of the incineration facility and the control method of the incineration facility according to the present invention has been described, the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the spirit of the present invention. is there.

例えば、炉内圧はフィーダ5が動作するときに変動するため、フィーダ5が動作(前進)するときだけ、この動作を検出した制御手段23が炉内圧設定値を下げるようにしてもよい。この場合においても、確実に急激な炉内圧の変動を抑制することができ、焼却設備Aを安定的に運転・操業することが可能になる。   For example, since the furnace pressure fluctuates when the feeder 5 operates, the control means 23 that has detected this operation may lower the furnace pressure setting value only when the feeder 5 operates (advances). Even in this case, rapid fluctuations in the furnace pressure can be reliably suppressed, and the incineration facility A can be stably operated and operated.

また、本実施形態では、フィーダ5のストロークを小さくしてフィーダ5の1回の前進動作で焼却炉3に投入する被焼却物1の投入量を抑えることで、被焼却物1の投入時に焼却炉3の炉内圧が急激に変動することを抑制することができる。このため、IDF入口ダンパ17を開閉制御して炉内圧を調整する必要がなくなり、IDF16の回転数のみで焼却設備Aを制御、構成するようにしてもよい。   Further, in this embodiment, the stroke of the feeder 5 is reduced and the amount of the incinerated material 1 that is input into the incinerator 3 by one forward operation of the feeder 5 is suppressed, so that the incinerated material 1 is incinerated. It can suppress that the furnace pressure of the furnace 3 fluctuates rapidly. For this reason, it is not necessary to control opening and closing of the IDF inlet damper 17 to adjust the furnace pressure, and the incineration facility A may be controlled and configured only by the rotational speed of the IDF 16.

1 被焼却物(ごみ)
2 ホッパ(ホッパシュート)
2a シュート部
3 焼却炉
4 フィードテーブル
5 フィーダ
6 フィーダ駆動装置
7 ストーカ
8 送風機
9 風箱
10 灰出し口
11 燃焼室
12 熱回収ボイラ
13 送風機
14 排ガス処理設備
15 煙突
16 IDF(誘引送風機)
17 IDF入口ダンパ
20 被焼却物高さ検出手段
21 炉内圧検出手段
22 風箱内圧検出手段
23 制御手段
A 焼却設備
H 被焼却物の高さレベル
1 Incineration object (garbage)
2 Hopper (hopper chute)
2a Chute part 3 Incinerator 4 Feed table 5 Feeder 6 Feeder driving device 7 Stoker 8 Blower 9 Air box 10 Ash outlet 11 Combustion chamber 12 Heat recovery boiler 13 Blower 14 Exhaust gas treatment equipment 15 Chimney 16 IDF (Attracting Blower)
17 IDF inlet damper 20 Incineration object height detection means 21 Furnace pressure detection means 22 Wind box internal pressure detection means 23 Control means A Incineration equipment H Incineration object height level

Claims (4)

被焼却物が一時的に貯留され、該被焼却物を連続的にフィードテーブル上に供給するためのホッパと、
前記被焼却物を燃焼させる焼却炉と、
前記フィードテーブル上を所定のストロークで進退移動し、前記フィードテーブルから前記被焼却物を押し出して前記焼却炉内のストーカ上に投入するフィーダと、
前記ホッパ内の前記被焼却物の高さレベルを検出する被焼却物高さ検出手段と、
前記焼却炉の炉内圧を検出する炉内圧検出手段と、
前記被焼却物高さ検出手段と前記炉内圧検出手段の各検出結果に基づいて、前記フィーダの動作を制御する制御手段とを備え、
前記制御手段が、前記被焼却物高さ検出手段の検出結果が予め設定した高さレベルの設定値を下回ったときに、前記ストロークを増加させるように前記フィーダの動作を制御し、
前記炉内圧検出手段の検出結果が予め設定した炉内圧の設定値を上回ったときに、前記ストロークを減少させるように前記フィーダの動作を制御するように構成されていることを特徴とする焼却設備。
A hopper for temporarily storing the incineration object, and continuously supplying the incineration object on the feed table;
An incinerator for burning the incinerated materials;
A feeder that moves forward and backward on the feed table with a predetermined stroke, pushes out the incinerated material from the feed table and puts it on a stalker in the incinerator;
An incinerated object height detecting means for detecting a height level of the incinerated object in the hopper;
A furnace pressure detecting means for detecting the furnace pressure of the incinerator;
Control means for controlling the operation of the feeder based on the detection results of the incinerated object height detection means and the furnace pressure detection means,
The control means controls the operation of the feeder so as to increase the stroke when the detection result of the incinerated object height detection means falls below a preset value of a height level,
An incineration facility configured to control the operation of the feeder so as to reduce the stroke when the detection result of the furnace pressure detecting means exceeds a preset value of a preset furnace pressure. .
請求項1記載の焼却設備において、
前記ストーカの下方から一次空気を供給するための風箱の内部圧力を検出する風箱内圧検出手段を備え、
前記制御手段が、前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の上限値を上回ったときに、ストーカ速度を増加させるように前記ストーカの動作を制御し、
前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の下限値を下回ったときに、ストーカ速度を減少させるように前記ストーカの動作を制御するように構成されていることを特徴とする焼却設備。
Incineration equipment according to claim 1,
An air box internal pressure detecting means for detecting an internal pressure of the air box for supplying primary air from below the stoker;
The control means controls the operation of the stalker so as to increase the stalker speed when the detection result of the wind box internal pressure detection means exceeds a preset upper limit value of the internal pressure of the wind box,
When the detection result of the windbox internal pressure detection means falls below a preset lower limit value of the internal pressure of the windbox, the operation of the stoker is controlled so as to decrease the stalker speed. Incineration facilities.
被焼却物が一時的に貯留され、該被焼却物を連続的にフィードテーブル上に供給するためのホッパと、
前記被焼却物を燃焼させる焼却炉と、
前記フィードテーブル上を所定のストロークで進退移動し、前記フィードテーブルから前記被焼却物を押し出して前記焼却炉内のストーカ上に投入するフィーダと、
前記ホッパ内の前記被焼却物の高さレベルを検出する被焼却物高さ検出手段と、
前記焼却炉の炉内圧を検出する炉内圧検出手段とを備えてなる焼却設備を制御する方法であって、
前記被焼却物高さ検出手段の検出結果が予め設定した高さレベルの設定値を下回ったときに、前記ストロークを増加させるように前記フィーダの動作を制御し、
前記炉内圧検出手段の検出結果が予め設定した炉内圧の設定値を上回ったときに、前記ストロークを減少させるように前記フィーダの動作を制御することを特徴とする焼却設備の制御方法。
A hopper for temporarily storing the incineration object, and continuously supplying the incineration object on the feed table;
An incinerator for burning the incinerated materials;
A feeder that moves forward and backward on the feed table with a predetermined stroke, pushes out the incinerated material from the feed table and puts it on a stalker in the incinerator;
An incinerated object height detecting means for detecting a height level of the incinerated object in the hopper;
A method for controlling incineration equipment comprising an in-furnace pressure detecting means for detecting an in-furnace pressure of the incinerator,
Controlling the operation of the feeder to increase the stroke when the detection result of the incinerated object height detecting means falls below a preset value of a preset height level;
A method for controlling an incinerator, wherein the operation of the feeder is controlled so as to reduce the stroke when a detection result of the furnace pressure detection means exceeds a preset value of a furnace pressure set in advance.
請求項3記載の焼却設備の制御方法において、
前記焼却設備が前記ストーカの下方から一次空気を供給するための風箱の内部圧力を検出する風箱内圧検出手段を備え、
前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の上限値を上回ったときに、ストーカ速度を増加させるように前記ストーカの動作を制御し、
前記風箱内圧検出手段の検出結果が予め設定した風箱の内部圧力の下限値を下回ったときに、ストーカ速度を減少させるように前記ストーカの動作を制御することを特徴とする焼却設備の制御方法。
In the incineration equipment control method according to claim 3,
The incinerator includes a wind box internal pressure detection means for detecting an internal pressure of the wind box for supplying primary air from below the stoker,
When the detection result of the windbox internal pressure detection means exceeds a preset upper limit value of the internal pressure of the windbox, the operation of the stoker is controlled to increase the stalker speed,
Control of the incinerator, wherein the operation of the stoker is controlled so as to reduce the stalker speed when the detection result of the wind box internal pressure detecting means falls below a preset lower limit value of the internal pressure of the wind box. Method.
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