JPH1054531A - Estimation method of refuse layer thickness index and combustion control system of refuse incinerator using the same - Google Patents
Estimation method of refuse layer thickness index and combustion control system of refuse incinerator using the sameInfo
- Publication number
- JPH1054531A JPH1054531A JP8209931A JP20993196A JPH1054531A JP H1054531 A JPH1054531 A JP H1054531A JP 8209931 A JP8209931 A JP 8209931A JP 20993196 A JP20993196 A JP 20993196A JP H1054531 A JPH1054531 A JP H1054531A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- zone
- combustion
- refuse
- stoker
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/10—Arrangement of sensing devices
- F23G2207/102—Arrangement of sensing devices for pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/55—Controlling; Monitoring or measuring
- F23G2900/55009—Controlling stoker grate speed or vibrations for waste movement
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ごみ焼却炉の燃焼
制御方式に関し、特に、燃焼すべきごみの量・堆積状況
を把握しながら最適な燃焼を行うための燃焼制御方式に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control system for a refuse incinerator, and more particularly, to a combustion control system for performing optimal combustion while grasping the amount and accumulation of refuse to be burned.
【０００２】[0002]
【従来の技術】一般に、ごみ焼却炉では多種多様なごみ
を炉内に供給し燃焼させるため、燃焼状態が時間的に変
化する。すなわち、ごみ焼却炉においては、ホッパから
炉内へのごみの供給はフィ−ダにより行われる。燃焼室
底部にはストーカが設けられ、燃焼すべきごみを載置し
て燃焼室内をごみの入り口側から出口方向に移動させ
る。このストーカは通常、複数のゾーンに分割されてい
る。焼却炉内へ供給されたごみは、各ゾ−ンのスト−カ
の動きにより移送され、その間に輻射熱を受けて乾燥、
昇温し、着火燃焼する。2. Description of the Related Art Generally, in a refuse incinerator, various kinds of refuse are supplied into the furnace and burned, so that the combustion state changes with time. That is, in a refuse incinerator, refuse is supplied from a hopper into the furnace by a feeder. A stoker is provided at the bottom of the combustion chamber, and the refuse to be burned is placed on the stoker and moved from the entrance side of the refuse to the exit direction in the combustion chamber. This stalker is typically divided into zones. The refuse supplied to the incinerator is transported by the movement of the stoker in each zone, during which it receives radiant heat and dries.
Heats up and ignites.
【０００３】一般に、フィーダの動作は予め設定した周
期で繰り返し行われるが、ごみ質や炉内でのごみの堆積
状況の違いにより各周期において炉内に供給されるごみ
の量はかなり変化する。ごみの供給が過剰になるとフィ
−ダ動作により供給されるごみは、炉内に堆積したごみ
の表層だけを移送し、ストーカによる移送で行われてい
る乾燥・昇温・着火・燃焼プロセスを乱し、燃焼を不安
定にする。また、供給が過少になるとごみ枯れを起こし
燃焼が急激に悪化する。[0003] Generally, the operation of the feeder is repeatedly performed at a preset cycle, but the amount of waste supplied to the furnace in each cycle varies considerably depending on the quality of waste and the accumulation state of the waste in the furnace. If the supply of refuse becomes excessive, the refuse supplied by the feeder operation transfers only the surface layer of the refuse accumulated in the furnace and disturbs the drying, heating, ignition, and combustion processes performed by the stoker. And make combustion unstable. In addition, when the supply is too small, garbage is withered, and the combustion is rapidly deteriorated.
【０００４】ストーカの各ゾーンのごみ層厚は、乾燥・
昇温・着火・燃焼のプロセスで、炉の出口側に進むにつ
れ徐々に薄くなる。しかし、ごみ質の変化によりゾーン
毎にそのプロセスの進行度合いが異なるため、各ゾーン
のごみ層厚、すなわちごみ層の形状は常に変化する。こ
の変化が大きくなると一時的な過剰燃焼やごみ枯れなど
を引き起こす。[0004] The thickness of the dust layer in each zone of the stoker is determined by
In the process of heating, igniting, and burning, it gradually becomes thinner as it goes to the outlet side of the furnace. However, the progress of the process is different for each zone due to the change in the waste quality, so that the waste layer thickness in each zone, that is, the shape of the waste layer always changes. When this change becomes large, it causes temporary overburning and garbage withering.
【０００５】従来、このようなごみ焼却炉内の燃焼の自
動制御は、発生蒸気量、炉内温度、燃焼排ガス酸素濃度
などの操業情報や、炉内の火炎の画像情報を利用して燃
焼状態の時間的変化を捉え、これに応じてごみの供給
量、ごみの移送量、一次燃焼空気流量・温度とそのスト
ーカゾーンへの配分比、二次燃焼空気量・温度などを操
作し燃焼を安定させていた。Conventionally, such automatic control of combustion in a refuse incinerator has been performed by utilizing operation information such as the amount of generated steam, the temperature in the furnace, and the oxygen concentration of the combustion exhaust gas, and the image information of the flame in the furnace. Capture changes over time and operate the amount of waste, the amount of waste transferred, the primary combustion air flow rate / temperature and its distribution ratio to the stoker zone, the secondary combustion air quantity / temperature, etc. to stabilize combustion. I was
【０００６】[0006]
【発明が解決しようとする課題】しかし、炉内の燃焼状
態の変化を捉えるためには、上述したような情報だけで
は炉内のごみ量や、ごみの堆積状況を把握することは難
しく、結果として安定した燃焼を継続するために不可欠
な炉内における安定したごみ層の形成が困難であった。However, in order to grasp the change in the combustion state in the furnace, it is difficult to grasp the amount of waste in the furnace and the accumulation state of the waste only with the information described above. As a result, it has been difficult to form a stable refuse layer in the furnace, which is essential for maintaining stable combustion.
【０００７】更に、ごみ焼却炉の燃焼制御方式として、
炉出口温度の安定化、余熱利用のために設置されたボイ
ラからの発生蒸気量の安定化などを目的としたＡＣＣシ
ステムが知られており、このシステムに関して多くの提
案がなされている。しかし、これらの提案は、制御対象
である炉出口温度、発生蒸気量や、排ガス中の酸素濃
度、有害ガス濃度、あるいは炉内画像を画像処理して得
られるごみの燃え切り点の位置などの付加情報で制御系
を構成しているが、ごみ層の厚みそのものを計測、制御
しようとする方式は提案されていない。[0007] Further, as a combustion control system of a refuse incinerator,
An ACC system for stabilizing the furnace outlet temperature, stabilizing the amount of steam generated from a boiler installed for utilizing residual heat, and the like are known, and many proposals have been made regarding this system. However, these proposals involve controlling the furnace outlet temperature, the amount of generated steam, the concentration of oxygen in the exhaust gas, the concentration of harmful gases, and the position of the burn-off point of the refuse obtained by processing the image in the furnace. Although the control system is constituted by the additional information, a method of measuring and controlling the thickness of the dust layer itself has not been proposed.
【０００８】したがって本発明は、上記した従来の燃焼
制御方式の欠点を解決するもので、炉内のごみの量、特
に堆積状況を把握して制御することにより、安定した燃
焼を確保し得るごみ焼却炉の燃焼制御方式を提供するこ
とを目的とする。Accordingly, the present invention solves the above-mentioned drawbacks of the conventional combustion control system, and controls the waste by grasping the amount of waste in the furnace, in particular, the accumulation state, thereby enabling stable waste to be secured. An object of the present invention is to provide a combustion control method for an incinerator.
【０００９】[0009]
【課題を解決するための手段】本発明によれば、燃焼室
底部に設けられ、燃焼すべきごみを載置して前記燃焼室
内をごみの入り口側から出口方向に移動させる複数のゾ
ーンからなるストーカと、前記複数のゾーン毎に前記ス
トーカの下側から燃焼空気を供給するためのダクトとを
備えたごみ焼却炉において、前記ダクト内の前記ゾーン
下側の圧力と前記燃焼室内の圧力との差圧を測定する手
段と、前記各ゾーンに供給される燃焼空気量を測定する
手段と、あらかじめ定められた演算を行う演算手段とを
有し、前記演算手段は、ごみの無い状態にて測定された
前記ダクト内の前記ゾーン下側の圧力と前記燃焼室内の
圧力との差圧に基づいて算出された前記ストーカの圧損
係数を用いて、燃焼状態にある時の前記ダクト内の前記
ゾーン下側の圧力と前記燃焼室内の圧力との差圧と前記
燃焼空気量とから前記ゾーン毎のごみ層厚指標を算出す
ることを特徴とするごみ層厚指標の推定方法が提供され
る。According to the present invention, there are provided a plurality of zones provided at the bottom of a combustion chamber for mounting waste to be burned and moving the combustion chamber from the entrance side to the exit side of the waste. In a refuse incinerator provided with a stoker and a duct for supplying combustion air from below the stoker for each of the plurality of zones, a refuse incinerator including a pressure in the duct below the zone and a pressure in the combustion chamber. Means for measuring the differential pressure, means for measuring the amount of combustion air supplied to each zone, and operation means for performing a predetermined operation, wherein the operation means performs measurement in a dust-free state Using the pressure drop coefficient of the stalker calculated based on the pressure difference between the pressure in the duct below the zone and the pressure in the combustion chamber, the zone below the zone in the duct when in the combustion state Side pressure Method of estimating waste layer thickness index and calculates the dust layer thickness index of each of the zone from the pressure difference between the combustion air quantity and pressure of the combustion chamber is provided.
【００１０】本発明によればまた、燃焼室底部に設けら
れ、燃焼すべきごみを載置して前記燃焼室内をフィーダ
によりごみが供給される入り口側から出口方向に移動さ
せる複数のゾーンからなるストーカと、前記複数のゾー
ン毎に前記ストーカの下側から燃焼空気を供給するため
のダクトと、前記ダクト内の前記ゾーン下側の圧力と前
記燃焼室内の圧力との差圧を測定する手段と、前記各ゾ
ーンに供給される燃焼空気量を測定する手段と、あらか
じめ定められた演算を行う演算手段と、前記フィーダ、
前記ストーカの速度及び前記燃焼空気量を制御する制御
手段とを有し、前記演算手段は、ごみの無い状態にて測
定された前記ダクト内の前記ゾーン下側の圧力と前記燃
焼室内の圧力との差圧に基づいて算出された前記ストー
カの圧損係数を用いて、燃焼状態にある時の前記ダクト
内の前記ゾーン下側の圧力と前記燃焼室内の圧力との差
圧と前記燃焼空気量とから前記ゾーン毎のごみ層厚指標
を算出し、前記制御手段は、前記演算手段により求めら
れた前記ゾーン毎のごみ層厚指標とあらかじめ知られて
いるごみ層厚指標目標値とにより、前記フィーダ、前記
ストーカの速度及び前記燃焼空気量を制御して前記スト
ーカの各ゾーン上のごみ層厚を目標値になるように制御
することを特徴とするごみ焼却炉の燃焼制御方式が提供
される。According to the present invention, there is also provided a plurality of zones provided at the bottom of the combustion chamber for mounting the refuse to be burned and moving the refuse from the entrance side supplied with the refuse by the feeder to the exit direction. A stalker, a duct for supplying combustion air from below the stoker for each of the plurality of zones, and means for measuring a differential pressure between a pressure below the zone in the duct and a pressure in the combustion chamber. A means for measuring the amount of combustion air supplied to each zone, a calculating means for performing a predetermined calculation, the feeder,
Control means for controlling the speed of the stoker and the amount of combustion air, the calculation means, the pressure under the zone in the duct and the pressure in the combustion chamber measured in a dust-free state Using the pressure loss coefficient of the stalker calculated based on the differential pressure of, the differential pressure between the pressure in the combustion chamber and the pressure below the zone in the duct and the pressure in the combustion chamber, and the amount of combustion air. Calculates the refuse layer thickness index for each zone from the above, the control means, the refuse layer thickness index for each zone obtained by the calculation means and a previously known refuse layer thickness index target value, the feeder And controlling the speed of the stoker and the amount of combustion air to control the thickness of the refuse layer on each zone of the stoker to a target value.
【００１１】なお、前記制御手段は、前記フィーダに最
も近いゾーンのごみ層厚についてはそのゾーンの前記燃
焼空気量及び前記フィーダの動作周期を調整して制御
し、残りのゾーンごみ層厚についてはそのゾーンの前記
燃焼空気量及び少なくとも前段のストーカの速度を調整
して制御するのが好ましい。The control means adjusts the amount of the combustion air in the zone closest to the feeder and controls the operation cycle of the feeder in that zone, and controls the remaining zone in the zone. Preferably, the amount of combustion air in the zone and the speed of at least the preceding stalker are adjusted and controlled.
【００１２】[0012]
【発明の実施の形態】以下、本発明の好ましい実施の形
態について、図面を参照して説明する。図１は本発明が
適用される水平ストーカ式ごみ焼却炉とその計装系の構
成を示す概略断面図である。焼却すべきごみ１１はホッ
パ１２に供給され、ホッパ１２の底部に設けられたフィ
ーダ１３の周期的なオン／オフ動作により、焼却炉の燃
焼室１４内に供給される。燃焼室１４内の底部には燃焼
室１４内に供給されたごみ１１を載置し、燃焼室１４の
出口１５、すなわち焼却灰の出口に向かってごみを移動
させるストーカ１６が設けられている。ストーカ１６
は、ここでは４つのゾーン１６−１〜１６−４に分割さ
れ、各ゾーン毎にストーカ１６の速度、すなわちごみの
移送速度を操作出来る構成になっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view showing a configuration of a horizontal stoker type incinerator to which the present invention is applied and an instrumentation system thereof. The refuse 11 to be incinerated is supplied to a hopper 12, and is supplied into a combustion chamber 14 of an incinerator by a periodic on / off operation of a feeder 13 provided at the bottom of the hopper 12. At the bottom of the combustion chamber 14, a stoker 16 for placing the waste 11 supplied into the combustion chamber 14 and moving the waste toward an outlet 15 of the combustion chamber 14, that is, an outlet of the incineration ash is provided. Stalker 16
Here, is divided into four zones 16-1 to 16-4, and the speed of the stoker 16, that is, the transfer speed of the refuse can be controlled for each zone.
【００１３】また、ストーカ１６の下側には一次燃焼空
気１７を供給するためのダクト１８が設けられている。
このダクト１８はストーカ１６の各ゾーン１６−１〜１
６−４の下側にそれぞれ開口する４つの開口部１８−１
〜１８−４を備えている。４つの開口部１８−１〜１８
−４のダクト１８からの分岐部には、ストーカ１６の各
ゾーン１６−１〜１６−４への一次燃焼空気１７の供給
量を制御するためのダンパ１９−１〜１９−４が設けら
れている。また、各ダンパ１９−１〜１９−４とストー
カ１６の各ゾーン１６−１〜１６−４間の開口部１８−
１〜１８−４内にはそれぞれ圧力計２０と流量計２１が
設置されており、ストーカ１６のゾーン１６−１〜１６
−４毎の圧力Ｐｓｉ、空気流量Ｆｉを計測できるように
構成されている。A duct 18 for supplying primary combustion air 17 is provided below the stoker 16.
The duct 18 is provided in each of the zones 16-1 to 16-1 of the stoker 16.
6-4 Four Openings 18-1 Opened Under Each
To 18-4. Four openings 18-1 to 18
At the branch portion from the duct 18 of the stoker 16, dampers 19-1 to 19-4 for controlling the supply amount of the primary combustion air 17 to the zones 16-1 to 16-4 of the stoker 16 are provided. I have. Further, an opening 18-between each of the dampers 19-1 to 19-4 and each of the zones 16-1 to 16-4 of the stoker 16.
A pressure gauge 20 and a flow meter 21 are respectively installed in 1 to 18-4, and zones 16-1 to 16-16 of the stoker 16 are provided.
-4, so that the pressure Psi and the air flow rate Fi can be measured.
【００１４】他方、燃焼室１４内には圧力計２２が設け
られており、炉内圧力Ｐo を測定する。燃焼室１４に
は、また、二次燃焼空気供給口２３が設けられ、燃焼室
１４内に二次燃焼空気２４が送り込まれる。更に、燃焼
室１４内の出口１５付近の内壁には燃焼室１４内のごみ
の堆積状態や燃焼状態を撮像するための炉内カメラ２５
が設けられている。燃焼室１４の天井部分には燃焼排ガ
ス２６の排出口２７が設けられている。排出口２７には
酸素濃度計２８が設けられている。そして、一次燃焼空
気１７を供給するダクト１８内及び二次燃焼空気供給口
２３内にはそれぞれ流量計２９、３０が設置されてい
る。On the other hand, a pressure gauge 22 is provided in the combustion chamber 14 to measure the furnace pressure Po. The combustion chamber 14 is further provided with a secondary combustion air supply port 23, and the secondary combustion air 24 is sent into the combustion chamber 14. Furthermore, an in-furnace camera 25 for imaging the state of accumulation and combustion of dust in the combustion chamber 14 is provided on the inner wall near the outlet 15 in the combustion chamber 14.
Is provided. An outlet 27 for a combustion exhaust gas 26 is provided in a ceiling portion of the combustion chamber 14. An oxygen concentration meter 28 is provided at the outlet 27. Flow meters 29 and 30 are installed in the duct 18 for supplying the primary combustion air 17 and in the secondary combustion air supply port 23, respectively.
【００１５】このように構成されたごみ燃焼炉に対し、
本発明は、上記ストーカのゾーン毎のごみ層厚指標の推
定と、それを用いた燃焼制御方式とに大きく分けること
が出来る。[0015] For the refuse combustion furnace configured as described above,
The present invention can be broadly divided into the estimation of the dust layer thickness index for each zone of the stoker and the combustion control method using the estimation.
【００１６】まず、ごみ層厚指標の推定については、炉
内及び各ゾーンのストーカ下の圧力計により、ゾーン毎
の炉内圧力との差圧を求め、求めた差庄と、管内流圧力
について一般に成り立つ圧損式を利用し、ストーカとご
み層による圧損係数を求める。これらの値から事前に求
めたストーカだけの圧損係数を除き、ごみ層のみによる
圧損係数を求める。このようにしてゾーン毎に求めたご
み層による圧損係数をごみ層厚の指標とする。First, regarding the estimation of the refuse layer thickness index, the pressure difference between the furnace pressure in each zone and the pressure inside the furnace was determined using a pressure gauge under the stoker in the furnace and in each zone. The pressure loss coefficient of the stoker and the debris layer is obtained by using a generally available pressure loss equation. Excluding the pressure loss coefficient of only the stoker obtained in advance from these values, the pressure loss coefficient of only the dust layer is obtained. The pressure loss coefficient of the dust layer determined for each zone in this manner is used as an index of the dust layer thickness.
【００１７】具体的な数式を用いて更に説明すると、ま
ず、あるダクトと燃焼室内の２点ａ−ｂ間を流れる気体
の圧力について、一般に、次のような圧損式が成り立
つ。To further explain using specific mathematical expressions, first, the following pressure loss formula generally holds for the pressure of gas flowing between a certain duct and two points ab in the combustion chamber.
【００１８】 Ｐａ−Ｐｂ＝（１／２）ζａｂρω2 （１） ここで、Ｐａ及びＰｂはあるダクトと燃焼室内のａ及び
ｂ点における圧力、ζａｂは圧損係数、ρは流体密度、
そしてωは流速である。Pa−Pb = (１ ／) ζabρω 2 (1) where Pa and Pb are pressures at points a and b in a certain duct and a combustion chamber, ζab is a pressure loss coefficient, ρ is a fluid density,
And ω is the flow velocity.
【００１９】この（１）式からストーカの４つのゾーン
のうちのｉ番目のゾーン１６−ｉ上にごみが存在しない
場合には次式が成り立つ。From the equation (1), when there is no dust on the i-th zone 16-i of the four zones of the stalker, the following equation is established.
【００２０】 ζｓｉ＝｛２（Ｐｓｉ＊−Ｐ0 ＊）／ρ｝・（Ａｉ／Ｆｉ＊）2 （２） ここで、ζｓｉはｉゾーンのストーカ１６−ｉの圧損係
数、Ｐ0 ＊はストーカ上にごみが存在しない場合におい
て圧力計２２で測定される炉内圧力、Ｐｓｉ＊は同じく
ストーカ１６−ｉ上にごみが存在しない場合において圧
力計２０により測定される、ストーカ下側のダクト開口
部１８−ｉ内の圧力、Ａｉは開口部１８−ｉのダクトか
らの分岐部における面積、そしてＦｉ＊はごみが存在し
ない場合にｉゾーンにおいて流量計２１で測定される燃
焼空気流量である。Ζsi = ｛2 (Psi * −P0 * ) / ρ｝ · (Ai / Fi * ) 2 (2) where ζsi is the pressure loss coefficient of the stoker 16-i in the i zone, and P0 * is on the stoker. The pressure in the furnace, Psi * , measured by the pressure gauge 22 when there is no dust, is also measured by the pressure gauge 20 when there is no dust on the stoker 16-i. The pressure in i, Ai is the area of the opening 18-i at the branch from the duct, and Fi * is the combustion air flow measured by the flow meter 21 in the i-zone in the absence of debris.
【００２１】次に、ストーカ１６−ｉ上にごみが存在す
る場合における、ごみ層のみによる圧損係数ζｒｉは次
式により求められる。Next, when dust is present on the stoker 16-i, the pressure loss coefficient 損 ri due to only the dust layer is obtained by the following equation.
【００２２】 ζｒｉ＝｛２（Ｐｓｉ−Ｐ0 ）／ρ｝・（Ａｉ／Ｆｉ）2 −ζｓｉ （３） このようなストーカ上に存在するごみ層の圧損係数ζｒ
ｉが炉内の目視によるごみ層厚と適合することから、ス
トーカ１６のゾ一ン毎のごみ層圧損係数をごみ層厚の指
標として用いることにより、炉内のごみ層形状を推定出
来る。Ζri = ｛2 (Psi−P0) / ρ｝ · (Ai / Fi) 2 −ζsi (3) Pressure loss coefficient ζr of the dust layer existing on such a stalker
Since i matches the thickness of the waste layer visually observed in the furnace, the shape of the waste layer in the furnace can be estimated by using the waste layer pressure loss coefficient for each zone of the stoker 16 as an index of the waste layer thickness.
【００２３】以上のようにして求められるごみ層厚指標
は、各ゾーンでの適正な値を経験的に求めることが出来
る。これは、実際に炉の運転を通して炉出口温度や発生
蒸気量の推移、炉内の観察などから得られるものであ
る。したがって、このごみ層厚指標を所望の目標値とな
るように制御することにより、燃焼制御が可能となる。As the dust layer thickness index obtained as described above, an appropriate value in each zone can be empirically obtained. This can be obtained from changes in the temperature of the furnace outlet and the amount of generated steam through actual operation of the furnace, observation of the inside of the furnace, and the like. Therefore, by controlling this dust layer thickness index to a desired target value, combustion control becomes possible.
【００２４】上記のごみ層厚指標に基づく燃焼制御方法
について、図２を用いて以下に説明する。図２はごみ層
厚の自動制御系を示すブロック図で、（Ａ）はストーカ
１６の４つのゾーンのうち、炉入口側の第１番目のゾー
ン１６−１を制御するための制御系を示し、（Ｂ）はそ
れ以外のゾーン１６−２、１６−３、（Ｃ）は最後のゾ
ーン１６−４を制御するための制御系を示すものであ
る。すなわち、本発明のごみ層厚指標に基づく燃焼制御
は、炉入口側のゾ−ンとそれ以外のゾ−ン、及び最後の
ゾ−ンとでは異なる制御を行う。A combustion control method based on the above-mentioned dust layer thickness index will be described below with reference to FIG. FIG. 2 is a block diagram showing an automatic control system for the dust layer thickness. FIG. 2A shows a control system for controlling the first zone 16-1 on the furnace inlet side among the four zones of the stoker 16. , (B) shows a control system for controlling the other zones 16-2 and 16-3, and (C) shows a control system for controlling the last zone 16-4. That is, in the combustion control based on the dust layer thickness index of the present invention, different control is performed between the zone on the furnace inlet side, the other zones, and the last zone.
【００２５】まず、図２（Ａ）のゾーン１６−１におけ
るごみ層厚指標に基づく制御は、フィーダ１３の動作周
期及びオン／オフと、ゾーン１６−１への供給空気量を
制御するダンパ１９−１を操作量として行う。ここで、
コントローラ３５−１にはゾーン１６−１のごみ層厚指
標の目標値とともに、図示しないが、炉出口温度、発生
蒸気偏差、燃切り点位置なども入力値として供給され、
ファジー制御などで多入力多出力の制御を行うように構
成されている。コントローラ３５−１は与えられた目標
値に対して、前述のように、フィーダ１３の動作周期及
びオン／オフとダンパ１９−１の開度を制御して、ゾー
ン１６−１上のごみの乾燥・昇温・着火・燃焼のプロセ
ス３６−１が最適になるようにする。First, the control based on the dust layer thickness index in the zone 16-1 in FIG. 2A is performed by controlling the operation cycle and on / off of the feeder 13 and the damper 19 for controlling the amount of air supplied to the zone 16-1. The operation amount is set to -1. here,
Along with the target value of the waste layer thickness index of the zone 16-1, the furnace outlet temperature, the generated steam deviation, the burn-off point position, and the like are also supplied to the controller 35-1 as input values.
It is configured to control multiple inputs and multiple outputs by fuzzy control or the like. The controller 35-1 controls the operation cycle and on / off of the feeder 13 and the opening of the damper 19-1 with respect to the given target value to dry the dust on the zone 16-1. -Optimize the heating / ignition / combustion process 36-1.
【００２６】すなわち、燃焼室１４内の圧力計２２、ゾ
ーン１６−１下の圧力計２０及び流量計２１による測定
を行い、それらの測定値がごみ層厚指標計算部３７−１
に供給される。ごみ層厚指標計算部３７−１には、前述
の（２）式で予め求めたストーカ１６−１の圧損係数を
発生する圧損係数部３８の出力値も供給され、前述の
（３）式にしたがってごみ層厚のみの圧損係数ζｒ1 が
ゾーン１６−１の指標として算出される。That is, measurement is performed by the pressure gauge 22 in the combustion chamber 14, the pressure gauge 20 under the zone 16-1, and the flow meter 21, and the measured values are used as the refuse layer thickness index calculation unit 37-1.
Supplied to The output value of the pressure loss coefficient unit 38 that generates the pressure loss coefficient of the stoker 16-1 previously obtained by the above equation (2) is also supplied to the dust layer thickness index calculation unit 37-1. Therefore, the pressure loss coefficient ζr1 of only the dust layer thickness is calculated as an index of the zone 16-1.
【００２７】ごみ層厚指標計算部３７−１の出力値は入
力側の減算器３９−１にフィードバックされ、ごみ層厚
指標の目標値との差が計算され、この差がコントローラ
３５−１に入力される。コントローラ３５−１はこの差
が０になるようにフィーダ１３の動作周期及びオン／オ
フとダンパ１９−１の開度を制御する。The output value of the dust layer thickness index calculating section 37-1 is fed back to the subtractor 39-1 on the input side, and the difference between the output value and the target value of the dust layer thickness index is calculated. This difference is sent to the controller 35-1. Is entered. The controller 35-1 controls the operation cycle and on / off of the feeder 13 and the opening degree of the damper 19-1 so that the difference becomes zero.
【００２８】次に、図２（Ｂ）のその他のゾーン１６−
ｉ、特にゾーン１６−２、１６−３におけるごみ層厚指
標に基づく制御は、そのゾーンのダンパ１９−ｉの開度
を操作量として行う他、フィーダ１３の動作周期及びオ
ン／オフ制御に代えて各ゾーンｉの前段のゾーン（ｉ−
１）のストーカ速度を制御する点が図２（Ａ）と異な
る。更に、図２（Ｃ）のゾーン１６−４におけるごみ層
厚指標に基づく制御については、ゾーン１６−３のスト
ーカ速度、ゾーン１６−４のストーカ速度、ゾーン１６
−４のダンパ１９−４の開度を操作量として制御を行
う。制御系の全体構成は図２（Ａ）の構成と同一である
ため、対応する部分には対応する符号の（１）に代えて
（ｉ）を付し詳細な説明は省略する。コントローラ３５
−ｉ、３５−４としてはゾーン１６−１におけるコント
ローラ３６−１と同様にファジー制御などで多入力多出
力の制御を行うことが出来る構成とする。Next, the other zones 16- in FIG.
i, in particular, the control based on the dust layer thickness index in the zones 16-2 and 16-3 uses the opening degree of the damper 19-i of the zone as an operation amount and replaces the operation cycle of the feeder 13 and the on / off control. Zone (i-
The point 1) of controlling the stalker speed is different from that of FIG. Further, regarding the control based on the dust layer thickness index in the zone 16-4 in FIG. 2C, the stoker speed in the zone 16-3, the stoker speed in the zone 16-4, and the zone 16
The control is performed using the opening degree of the damper 19-4 of -4 as an operation amount. Since the overall configuration of the control system is the same as the configuration shown in FIG. 2A, the corresponding portions are denoted by (i) instead of the corresponding reference numerals (1), and detailed description is omitted. Controller 35
-I and 35-4 are configured to be capable of controlling multiple inputs and multiple outputs by fuzzy control or the like, similarly to the controller 36-1 in the zone 16-1.
【００２９】次に、このように構成された本発明の燃焼
制御方式の動作を説明する。ホッパ１２から炉内へのご
みの供給はフィ−ダ１３により行われる。炉内へ供給さ
れたごみはスト−カ１６の各ゾ−ン１６−１、１６−
２、１６−３、１６−４の動きにより移送され、その間
に輻射熱を受け乾燥・昇温し着火・燃焼する。一般に、
フィーダ１３の動作は予め設定された周期で繰り返し行
われるが、ごみ質や炉内でのごみの堆積状況の違いによ
り１周期で炉内に供給されるごみの量はかなり変化す
る。ごみの供給が過剰になるとフィ−ダ動作により供給
されるごみは、炉内に堆積したごみの表層だけを移送
し、通常ストーカ１６による移送で行われている乾燥・
昇温・着火・燃焼プロセスを乱し燃焼を不安定にする。
また、供給が過少になるとごみ枯れを起こし燃焼が急激
に悪化する。Next, the operation of the combustion control system of the present invention configured as described above will be described. The supply of waste from the hopper 12 into the furnace is performed by a feeder 13. The refuse supplied into the furnace is discharged to each zone 16-1 and 16-
It is transferred by the movement of 2, 16-3 and 16-4, and receives radiant heat during that time to dry, raise the temperature, ignite and burn. In general,
The operation of the feeder 13 is repeatedly performed at a preset cycle, but the amount of refuse supplied into the furnace in one cycle varies considerably depending on the refuse quality and the accumulation state of refuse in the furnace. If the supply of refuse becomes excessive, the refuse supplied by the feeder operation transfers only the surface layer of the refuse accumulated in the furnace, and the refuse is usually dried and transferred by the stoker 16.
Disturbs heating, ignition, and combustion processes to make combustion unstable.
In addition, when the supply is too small, garbage is withered, and the combustion is rapidly deteriorated.
【００３０】しかし、本発明の制御方式においては、ス
ト−カ１６の各ゾ−ン１６−１、１６−２、１６−３、
１６−４上のごみ層の厚さを含む形状を一定に維持し、
燃焼で失われた分のごみを補充しつつ安定に炉内に供給
することができるので上に述べた問題を回避出来る。However, in the control method of the present invention, each zone 16-1, 16-2, 16-3,
16-4, keeping the shape including the thickness of the dirt layer constant,
The above-mentioned problem can be avoided because the waste lost in the combustion can be stably supplied into the furnace while being replenished.
【００３１】また、ストーカ１６の各ゾーン１６−１、
１６−２、１６−３、１６−４上のごみ層厚は、乾燥・
昇温・着火・燃焼のプロセスで、出口１５側に進むにつ
れ徐々に薄くなる。しかし、ごみ質の変化によりゾーン
毎にそのプロセスの進行度合いが異なるため、各ゾーン
のごみ層厚、すなわちごみ層の形状は常に変化する。こ
の変化が大きくなると一時的な過剰燃焼やごみ枯れなど
を引き起こすが、本発明の制御方式はこのような場合に
も有効に作用し、各ゾーンのごみ層厚を目標値に制御し
ながらごみを移送し燃焼を進行させる。すなわち、フィ
ーダ１３及び各ゾーンのストーカ速度、ダンパ１９−１
〜１９−４の開度を操作することにより、燃焼空気量の
配分比を調整し、これによって乾燥・昇温・着火・燃焼
プロセスの進行を調節してごみ層形状の一定化を促進す
る。したがって、一時的な過剰燃焼やごみ枯れを起こす
ことがなくなり燃焼を安定化することができる。なお、
ゾ−ンの数は４つに制限されないことは言うまでもな
い。Each zone 16-1 of the stoker 16,
The dust layer thickness on 16-2, 16-3, 16-4 is
In the process of temperature rise, ignition, and combustion, the thickness gradually becomes thinner toward the outlet 15 side. However, the progress of the process is different for each zone due to the change in the waste quality, so that the waste layer thickness in each zone, that is, the shape of the waste layer always changes. When this change becomes large, temporary excessive combustion or dust withering occurs, etc., but the control method of the present invention works effectively in such a case as well, and controls the dust while controlling the thickness of the dust layer in each zone to the target value. Transfer and promote combustion. That is, the stoker speed of the feeder 13 and each zone, the damper 19-1
By manipulating the opening degree of １９19-4, the distribution ratio of the amount of combustion air is adjusted, thereby controlling the progress of the drying / heating / ignition / combustion process to promote the stabilization of the dust layer shape. Therefore, it is possible to stabilize the combustion without causing temporary excessive combustion or garbage withering. In addition,
It goes without saying that the number of zones is not limited to four.
【００３２】以上の実施形態は、水平ストーカ式のごみ
焼却炉に関して説明したが、他の形状のストーカ式ごみ
焼却炉にも適用することができる。Although the above embodiment has been described with reference to a horizontal stoker type incinerator, it can be applied to a stoker type incinerator of other shapes.
【００３３】[0033]
【発明の効果】以上説明した本発明によれば、炉内スト
ーカの各ゾーン毎のごみ層厚を適正に保つことにより、
炉内ストーカ上を移動するのごみ層を適正に形成するこ
とができ、これによってごみの燃焼を炉内全体に亘って
安定に維持することができる。したがって、本発明の制
御方式とともに、一般のＡＣＣを組合わせることによ
り、ＣＯやＮＯｘなどの公害物質の発生の抑制、安定し
た自動運転の継続、及び発生蒸気量の制御等の操業目標
を従来以上に確実に達成することができる。According to the present invention described above, by properly maintaining the dust layer thickness in each zone of the furnace stoker,
The debris layer moving on the in-furnace stoker can be properly formed, so that the combustion of the debris can be stably maintained throughout the furnace. Therefore, by combining general ACC with the control method of the present invention, operating targets such as suppression of the generation of pollutants such as CO and NOx, continuation of stable automatic operation, and control of the amount of generated steam are set to be higher than before. Can be reliably achieved.
【図１】本発明が適用される水平ストーカ式ごみ焼却炉
とその計装系の構成を示す概略断面図である。FIG. 1 is a schematic sectional view showing a configuration of a horizontal stoker type incinerator to which the present invention is applied and an instrumentation system thereof.
【図２】本発明のごみ層厚の自動制御系を示すブロック
図であり、（Ａ）はストーカの第１のゾーンを制御する
ための制御系を示し、（Ｂ）は第２、第３のゾーンを制
御するための制御系を示し、（Ｃ）は第４のゾーンを制
御するための制御系を示す。FIG. 2 is a block diagram showing an automatic control system for the thickness of a dust layer according to the present invention, wherein (A) shows a control system for controlling a first zone of a stoker, and (B) shows second and third control systems. And (C) shows a control system for controlling the fourth zone.
１１ ごみ １２ ホッパ １３ フィーダ １４ 燃焼室 １５ 出口 １６ ストーカ １７ 一次燃焼空気 ２０、２２ 圧力計 ２１、２９、３０ 流量計 ２３ 二次燃焼空気供給口 ２４ 二次燃焼空気 ２５ 炉内カメラ ２６ 燃焼排ガス ２７ 燃焼排ガス排出口 ２８ 酸素濃度計 DESCRIPTION OF SYMBOLS 11 Garbage 12 Hopper 13 Feeder 14 Combustion chamber 15 Outlet 16 Stalker 17 Primary combustion air 20, 22 Pressure gauge 21, 29, 30 Flow meter 23 Secondary combustion air supply port 24 Secondary combustion air 25 In-furnace camera 26 Combustion exhaust gas 27 Combustion Exhaust gas outlet 28 Oxygen concentration meter
Claims (3)
を載置して前記燃焼室内をごみの入り口側から出口方向
に移動させる複数のゾーンからなるストーカと、前記複
数のゾーン毎に前記ストーカの下側から燃焼空気を供給
するためのダクトとを備えたごみ焼却炉において、 前記ダクト内の前記ゾーン下側の圧力と前記燃焼室内の
圧力との差圧を測定する手段と、 前記各ゾーンに供給される燃焼空気量を測定する手段
と、 あらかじめ定められた演算を行う演算手段とを有し、 前記演算手段は、ごみの無い状態にて測定された前記ダ
クト内の前記ゾーン下側の圧力と前記燃焼室内の圧力と
の差圧に基づいて算出された前記ストーカの圧損係数を
用いて、燃焼状態にある時の前記ダクト内の前記ゾーン
下側の圧力と前記燃焼室内の圧力との差圧と前記燃焼空
気量とから前記ゾーン毎のごみ層厚指標を算出すること
を特徴とするごみ層厚指標の推定方法。1. A stoker comprising a plurality of zones provided at a bottom portion of a combustion chamber for placing refuse to be burned and moving the refuse from the entrance side to the exit direction of the refuse in the combustion chamber; In a refuse incinerator provided with a duct for supplying combustion air from below the stalker, means for measuring a differential pressure between a pressure below the zone in the duct and a pressure in the combustion chamber, A means for measuring the amount of combustion air supplied to the zone; and a calculating means for performing a predetermined calculation, wherein the calculating means is the lower side of the zone in the duct measured in a dust-free state. Using the pressure loss coefficient of the stoker calculated based on the pressure difference between the pressure of the stoker and the pressure of the combustion chamber, the pressure in the lower side of the zone in the duct and the pressure in the combustion chamber when in a combustion state. Differential pressure Method of estimating waste layer thickness index and calculates the dust layer thickness index of each of the zone from said combustion air quantity.
を載置して前記燃焼室内をフィーダによりごみが供給さ
れる入り口側から出口方向に移動させる複数のゾーンか
らなるストーカと、 前記複数のゾーン毎に前記ストーカの下側から燃焼空気
を供給するためのダクトと、 前記ダクト内の前記ゾーン下側の圧力と前記燃焼室内の
圧力との差圧を測定する手段と、 前記各ゾーンに供給される燃焼空気量を測定する手段
と、 あらかじめ定められた演算を行う演算手段と、 前記フィーダ、前記ストーカの速度及び前記燃焼空気量
を制御する制御手段とを有し、 前記演算手段は、ごみの無い状態にて測定された前記ダ
クト内の前記ゾーン下側の圧力と前記燃焼室内の圧力と
の差圧に基づいて算出された前記ストーカの圧損係数を
用いて、燃焼状態にある時の前記ダクト内の前記ゾーン
下側の圧力と前記燃焼室内の圧力との差圧と前記燃焼空
気量とから前記ゾーン毎のごみ層厚指標を算出し、 前記制御手段は、前記演算手段により求められた前記ゾ
ーン毎のごみ層厚指標とあらかじめ知られているごみ層
厚指標目標値とにより、前記フィーダ、前記ストーカの
速度及び前記燃焼空気量を制御して前記ストーカの各ゾ
ーン上のごみ層厚を目標値になるように制御することを
特徴とするごみ焼却炉の燃焼制御方式。2. A stoker comprising a plurality of zones provided at a bottom portion of a combustion chamber, the garbage being loaded with refuse to be burned, and moving from the entrance side supplied with refuse by a feeder to the exit direction in the combustion chamber. A duct for supplying combustion air from below the stoker for each zone, a means for measuring a differential pressure between a pressure below the zone in the duct and a pressure in the combustion chamber, and Means for measuring the amount of combustion air to be supplied, operation means for performing a predetermined operation, and control means for controlling the speed of the feeder, the stalker and the amount of combustion air, wherein the operation means Using the pressure loss coefficient of the stoker calculated based on the pressure difference between the pressure in the duct below the zone in the duct and the pressure in the combustion chamber measured in a dust-free state, to the combustion state Calculating a dust layer thickness index for each zone from a differential pressure between a pressure below the zone in the duct at a certain time and a pressure in the combustion chamber and the amount of combustion air; By the waste layer thickness index for each zone and the previously known waste layer thickness target value determined by the above, the feeder, the speed of the stoker and the amount of combustion air are controlled to control the stoker on each zone. A combustion control method for a refuse incinerator characterized by controlling the refuse layer thickness to a target value.
前記制御手段は、前記フィーダに最も近いゾーンのごみ
層厚についてはそのゾーンの前記燃焼空気量及び前記フ
ィーダの動作周期を調整して制御し、残りのゾーンごみ
層厚についてはそのゾーンの前記燃焼空気量及び少なく
とも前段のストーカの速度を調整して制御することを特
徴とするごみ焼却炉の燃焼制御方式。3. The combustion control system according to claim 2, wherein
The control means controls the amount of combustion air in the zone closest to the feeder by adjusting the amount of combustion air in the zone and the operation cycle of the feeder. A combustion control method for a refuse incinerator, wherein the amount of air and at least the speed of a stoker in a preceding stage are adjusted and controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8209931A JP3030614B2 (en) | 1996-08-08 | 1996-08-08 | Estimation method of waste layer thickness index and combustion control method of waste incinerator using the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8209931A JP3030614B2 (en) | 1996-08-08 | 1996-08-08 | Estimation method of waste layer thickness index and combustion control method of waste incinerator using the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1054531A true JPH1054531A (en) | 1998-02-24 |
| JP3030614B2 JP3030614B2 (en) | 2000-04-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8209931A Expired - Lifetime JP3030614B2 (en) | 1996-08-08 | 1996-08-08 | Estimation method of waste layer thickness index and combustion control method of waste incinerator using the method |
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| Country | Link |
|---|---|
| JP (1) | JP3030614B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0955499A3 (en) * | 1998-05-05 | 2000-02-02 | MARTIN GmbH für Umwelt- und Energietechnik | Process for regulating the firing power in combustion plants |
| JP2000291928A (en) * | 1999-04-08 | 2000-10-20 | Ishikawajima Harima Heavy Ind Co Ltd | Detecting method for thickness of waste layer in furnace and air distribution control method using thickness of the layer |
| JP2000337621A (en) * | 1999-05-26 | 2000-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for supplying combustion air to stoker incinerator |
| JP2001082719A (en) * | 1999-09-16 | 2001-03-30 | Ebara Corp | Combustion control for refuse incinerating plant |
| JP2002106821A (en) * | 2000-09-29 | 2002-04-10 | Kawasaki Heavy Ind Ltd | Method and device for controlling combustion in refuse incineration plant |
| JP2002357312A (en) * | 2001-06-01 | 2002-12-13 | Kobe Steel Ltd | Stoker type incinerator and method for incinerating thereby |
| KR100448533B1 (en) * | 2002-03-19 | 2004-09-14 | 현대중공업 주식회사 | Control of Combustion and Steam Generation Using Friction Coefficient of the Combustion Air in a Stoker Type Incinerator |
| JP2017145980A (en) * | 2016-02-15 | 2017-08-24 | 日立造船株式会社 | Stoker type incinerator |
| JP2021103063A (en) * | 2019-12-25 | 2021-07-15 | クボタ環境サ−ビス株式会社 | Refuse layer thickness evaluation method of refuse incinerator and combustion control method of refuse incinerator |
| CN115585465A (en) * | 2022-10-14 | 2023-01-10 | 北京华宇辉煌生态环保科技股份有限公司 | Garbage treatment regulation and control system and method |
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| JPS5120481A (en) * | 1974-07-19 | 1976-02-18 | Hitachi Ltd | Shokyakurono seigyosochi |
| JPS59180212A (en) * | 1983-03-30 | 1984-10-13 | Kawasaki Heavy Ind Ltd | Combustion controller in refuse incinerator |
| JPH04208307A (en) * | 1990-11-30 | 1992-07-30 | Hitachi Ltd | Method for controlling supplying of fuel for solid item combustion device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120481A (en) * | 1974-07-19 | 1976-02-18 | Hitachi Ltd | Shokyakurono seigyosochi |
| JPS59180212A (en) * | 1983-03-30 | 1984-10-13 | Kawasaki Heavy Ind Ltd | Combustion controller in refuse incinerator |
| JPH04208307A (en) * | 1990-11-30 | 1992-07-30 | Hitachi Ltd | Method for controlling supplying of fuel for solid item combustion device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0955499A3 (en) * | 1998-05-05 | 2000-02-02 | MARTIN GmbH für Umwelt- und Energietechnik | Process for regulating the firing power in combustion plants |
| SG84529A1 (en) * | 1998-05-05 | 2001-11-20 | Martin Umwelt & Energietech | Method for controlling the firing rate of combustion installations |
| JP2000291928A (en) * | 1999-04-08 | 2000-10-20 | Ishikawajima Harima Heavy Ind Co Ltd | Detecting method for thickness of waste layer in furnace and air distribution control method using thickness of the layer |
| JP2000337621A (en) * | 1999-05-26 | 2000-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for supplying combustion air to stoker incinerator |
| JP2001082719A (en) * | 1999-09-16 | 2001-03-30 | Ebara Corp | Combustion control for refuse incinerating plant |
| JP2002106821A (en) * | 2000-09-29 | 2002-04-10 | Kawasaki Heavy Ind Ltd | Method and device for controlling combustion in refuse incineration plant |
| JP2002357312A (en) * | 2001-06-01 | 2002-12-13 | Kobe Steel Ltd | Stoker type incinerator and method for incinerating thereby |
| KR100448533B1 (en) * | 2002-03-19 | 2004-09-14 | 현대중공업 주식회사 | Control of Combustion and Steam Generation Using Friction Coefficient of the Combustion Air in a Stoker Type Incinerator |
| JP2017145980A (en) * | 2016-02-15 | 2017-08-24 | 日立造船株式会社 | Stoker type incinerator |
| JP2021103063A (en) * | 2019-12-25 | 2021-07-15 | クボタ環境サ−ビス株式会社 | Refuse layer thickness evaluation method of refuse incinerator and combustion control method of refuse incinerator |
| CN115585465A (en) * | 2022-10-14 | 2023-01-10 | 北京华宇辉煌生态环保科技股份有限公司 | Garbage treatment regulation and control system and method |
| CN115585465B (en) * | 2022-10-14 | 2023-04-14 | 北京华宇辉煌生态环保科技股份有限公司 | Garbage treatment regulation and control system and method |
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