JPH0518014B2 - - Google Patents
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- Publication number
- JPH0518014B2 JPH0518014B2 JP61257846A JP25784686A JPH0518014B2 JP H0518014 B2 JPH0518014 B2 JP H0518014B2 JP 61257846 A JP61257846 A JP 61257846A JP 25784686 A JP25784686 A JP 25784686A JP H0518014 B2 JPH0518014 B2 JP H0518014B2
- Authority
- JP
- Japan
- Prior art keywords
- garbage
- weight
- waste
- dust supply
- supply device
- 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.)
- Expired - Lifetime
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- Incineration Of Waste (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、一般廃棄物及び産業廃棄物等の廃棄
物（以下、単にごみと言う）を焼却するごみ焼却
炉の燃焼制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a combustion control device for a garbage incinerator that incinerates waste such as general waste and industrial waste (hereinafter simply referred to as garbage).
（従来の技術）
従来、ごみ焼却炉において、ごみピツトに貯留
されたごみはホツパに投入され、シユートを経て
給じん装置から火格子に送られて焼却されてい
る。その際、毎時の焼却量は、ごみ収集、滞留状
況、施設現状やごみ性状等を判断して決定されて
おり、運転条件の調整は、炉内温度を一定範囲内
におさめながら決められた量を焼却するととも
に、焼却灰中に残留する未燃分をできるだけ減少
させるようになされている。そして、この制御は
燃焼状態が変動した時に操作員の判断あるいは工
業計器や自動燃焼制御装置等の信号により、予定
値又は設定値に復旧するための訂正操作を行う、
いわゆるフイードバツク制御によつて行われてい
た。(Prior Art) Conventionally, in a garbage incinerator, garbage stored in a garbage pit is put into a hopper, passed through a chute, and sent from a dust supply device to a grate where it is incinerated. At that time, the amount of incineration per hour is determined based on the garbage collection, accumulation status, current condition of the facility, and garbage properties, etc., and the operating conditions are adjusted to keep the furnace temperature within a certain range while keeping the determined amount. At the same time, the amount of unburned matter remaining in the incinerated ash is reduced as much as possible. This control performs corrective operations to restore the planned value or set value based on operator judgment or signals from industrial instruments, automatic combustion control devices, etc. when the combustion state fluctuates.
This was done using so-called feedback control.
（発明が解決しようとする問題点）
一般に、ごみは、季節、天候のみならず収集地
区によつても、その性状は著しく変化するため、
たとえ給じん装置の速度を一定にしても、水分、
見掛比重や摩擦係数、圧縮係数等の諸特性が異な
るため、供給されるごみの重量は一定しない。さ
らに、この重量の変動に加えて着火温度や発熱量
の変化があるために、ごみ供給速度、火格子送り
速度だけでなく、燃焼空気量、燃焼空気温度、２
次空気量、炉内圧力等を経験に基づいて総合的に
調整する必要がある。(Problems to be solved by the invention) In general, the properties of garbage change significantly depending not only on the season and weather, but also on the collection area.
Even if the speed of the dust supply device is kept constant, moisture
Since various characteristics such as apparent specific gravity, coefficient of friction, and coefficient of compression differ, the weight of the supplied garbage is not constant. Furthermore, in addition to this weight variation, there are also changes in ignition temperature and calorific value, so not only the garbage supply rate and grate feed rate, but also the combustion air amount, combustion air temperature,
It is necessary to comprehensively adjust the air volume, furnace pressure, etc. based on experience.
しかしながら、水分が少なく見掛比重が軽いご
みは空滑りするので給じん効率が悪く、水分が多
くて重たいごみは給じん操作を停止しても滑り落
ち等で予定以上に供給されることもあり、給じん
装置の操作量のみでは１動作当たりのごみ供給量
は把握できない。 However, garbage with low water content and light apparent specific gravity slides around empty-handed, resulting in poor dust supply efficiency, while heavy garbage with high moisture content may slide down even when the dust supply operation is stopped, resulting in more than expected being supplied. However, the amount of waste supplied per operation cannot be determined only by the amount of operation of the dust supply device.
また、給じん装置または乾燥火格子によつて、
ごみが炉内に送り込まれてから、燃焼火格子上の
燃焼中心部に到達するまでに約１時間がかかるた
め、ごみ質に起因する燃焼状態の変動を感知した
時には、上述の如く約１時間分のごみが炉内に入
つているので、この調整を行つても根本的解決に
はならない。 Also, by means of a dust supply device or a drying grate,
It takes about 1 hour for the garbage to reach the combustion center on the combustion grate after it is sent into the furnace, so when a change in the combustion state due to the quality of the garbage is detected, it takes about 1 hour as mentioned above. Even if this adjustment is made, it will not fundamentally solve the problem since there is a lot of garbage in the furnace.
（問題点を解決するための手段）
本発明のごみ焼却炉における燃焼制御方法は、
ごみ投入口から投入されたごみを炉内の火格子に
供給する給じん装置を備えたごみ焼却炉におい
て、前記ごみ投入ホツパを含む給じん装置全体の
ごみ重量もしくは代表的な複数点のごみ重量を、
ごみ重量計測装置により給じん装置のごみ供給動
作後もしくはごみ投入後に計測し、該ごみ重量と
ごみ重量設定器で設定された重量との差を単位時
間積算し、その積算量に応じて前記給じん装置に
よるごみの供給速度を制御し、一方、レベル計測
装置により計測したごみ容積と前記ごみ重量とに
よりごみの見掛比重を演算するとともに、見掛比
重からごみの低位発熱量を演算し、低位発熱量を
演算したごみが給じん装置から火格子の燃焼中心
位置に達するまでの時間を火格子からの移送速度
情報により遅延させた後、上記低位発熱量に基づ
いて炉内に供給する燃焼空気量とその空気温度を
制御するとともに、該低位発熱量に基づいて炉内
温度調整装置により炉内温度を制御するものであ
る。(Means for solving the problem) The combustion control method in a garbage incinerator of the present invention includes:
In a garbage incinerator equipped with a dust supply device that supplies garbage input from the garbage input port to a grate in the furnace, the garbage weight of the entire dust supply device including the garbage input hopper or the garbage weight of representative multiple points of,
The garbage weight is measured by the garbage weight measuring device after the garbage feeding operation of the dust supply device or after the garbage is inputted, and the difference between the garbage weight and the weight set by the garbage weight setting device is accumulated per unit time. controlling the supply speed of the garbage by the dust device, while calculating the apparent specific gravity of the garbage based on the garbage volume measured by the level measuring device and the garbage weight, and calculating the lower calorific value of the garbage from the apparent specific gravity; The time required for the garbage whose lower calorific value has been calculated to reach the combustion center position of the grate from the dust supply device is delayed using transfer speed information from the grate, and then combustion is supplied to the furnace based on the lower calorific value. The amount of air and the temperature of the air are controlled, and the temperature inside the furnace is controlled by the furnace temperature adjustment device based on the lower heating value.
（作用）
給じん装置上のごみ重量を測定し、これに基づ
いて給じん装置によるごみの供給速度を制御す
る。これとともに、給じん装置上のごみ容積を測
定してごみ容積と前記ごみ重量とによりごみの見
掛比重を演算し、見掛比重に基づいて低位発熱量
を演算することで、次に焼却されるごみの低位発
熱量を予測し、この低位発熱量に基づいて燃焼が
安定するよう燃焼空気、燃焼空気温度、炉内温度
を制御する。(Function) The weight of garbage on the dust supply device is measured, and based on this, the feeding speed of garbage by the dust supply device is controlled. At the same time, the garbage volume on the dust supply device is measured, the apparent specific gravity of the garbage is calculated from the garbage volume and the garbage weight, and the lower calorific value is calculated based on the apparent specific gravity. The system predicts the lower calorific value of the waste, and controls the combustion air, combustion air temperature, and furnace temperature based on this lower calorific value to stabilize combustion.
（実施例）
以下、本発明の一実施例について図面を参照し
て説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は、ごみ焼却炉の概略構成を示してい
る。 FIG. 1 shows a schematic configuration of a waste incinerator.
ここで、ごみとは、一般廃棄物及び産業廃棄物
を含む廃棄物全般をいう。 Here, garbage refers to waste in general, including general waste and industrial waste.
ごみピツト１内に貯留されたごみは、クレーン
２で把持するとともに、クレーン荷重計で重量を
測定した後、ホツパ３に投入され、シユート４を
経て給じん装置５に到達し、次いで、予め設定さ
れた速度で火格子６に供給される。レベル計測装
置７は、シユート４内のごみのレベルを計測する
ためのものであり、複数の区域に分割して、その
区域内のごみの有無または多少を計測する方式、
あるいは基準点からの高さを連続的に計測する方
式等のものがある。 The garbage stored in the garbage pit 1 is grasped by a crane 2 and its weight is measured by a crane load meter, and then thrown into a hopper 3, passed through a chute 4, and reaches a dust supply device 5. is supplied to the grate 6 at the same speed. The level measuring device 7 is for measuring the level of garbage in the chute 4, and is divided into a plurality of areas and measures the presence or absence of garbage in each area.
Alternatively, there is a method that continuously measures the height from a reference point.
さらに、給じん装置５には、この給じん装置５
上に加えられたごみ重量を計測するごみ重量計測
装置８が設けられている。したがつて、レベル計
測装置７により、シユート４内のごみレベルが判
ればシユート４及び給じん装置５に堆積されたご
みの総容積が計算できるとともに、その時の容積
に対するごみ重量をごみ重量計測装置８により測
定すれば、既知の風袋重量等を差引いたごみの眞
重量（第２図に示すＷ）を知ることができる。 Furthermore, the dust supply device 5 includes a
A garbage weight measuring device 8 is provided for measuring the weight of garbage added on top. Therefore, if the level measuring device 7 determines the garbage level in the chute 4, the total volume of the garbage accumulated in the chute 4 and the dust supply device 5 can be calculated, and the garbage weight relative to the volume at that time can be calculated by the garbage weight measuring device. 8, the true weight of the garbage (W shown in FIG. 2) can be determined by subtracting the known tare weight, etc.
この計測は、給じん装置５によるごみの供給動
作が一動作終了した後、及びクレーン２の投入操
作終了後の安定した状態の時に行われる。 This measurement is performed after the dust supplying device 5 has completed one operation of supplying garbage and when the crane 2 is in a stable state after the loading operation has been completed.
また、各測定重量とその時のごみ容積とを演算
すれば、焼却炉に供給されるごみの見掛比重の概
略が毎回把握できる。ごみの見掛比重と低位発熱
量との間には、負の相関関係があるので、今から
焼却しようとするごみの見掛比重が判れば、これ
に基づいて低位発熱量の概略が演算でき、それに
対応する燃焼条件に予め調整することができる。 In addition, by calculating each measured weight and the garbage volume at that time, it is possible to roughly grasp the apparent specific gravity of the garbage to be supplied to the incinerator each time. There is a negative correlation between the apparent specific gravity of garbage and the lower calorific value, so if you know the apparent specific gravity of the garbage you are about to incinerate, you can roughly calculate the lower calorific value based on this. , the corresponding combustion conditions can be adjusted in advance.
第２図は、この焼却炉の制御系を示している。 FIG. 2 shows the control system of this incinerator.
レベル計測装置７で計測された容積のごみ重量
を、ごみ重量計測装置８で計測・演算した重量値
Ｗは、比較積算部１１で、予定された焼却量を設
定するごみ重量設定器１０の設定値W0と比較さ
れ、その差を単位時間積算された値ΔWが速度補
正演算部１３に出力される。速度補正演算部１３
では入力された値ΔWに基づいて補正すべき補正
値ΔSを求め、給じん速度調節部１４に出力する。
給じん速度調節部１４では、給じん速度設定器１
２で予めごみの状態に基づいて初期設定された設
定値S0が、前記補正値ΔSによつて補正されて、
給じん速度駆動装置１５に変速指示を与える。 The weight value W obtained by measuring and calculating the garbage weight of the volume measured by the level measuring device 7 by the garbage weight measuring device 8 is determined by the comparison and integration section 11, and the weight value W is set by the garbage weight setting device 10 for setting the scheduled incineration amount. The value ΔW is compared with the value W 0 and the difference is integrated over a unit time, and the value ΔW is output to the speed correction calculation section 13 . Speed correction calculation unit 13
Then, a correction value ΔS to be corrected is determined based on the input value ΔW, and is output to the dust supply speed adjusting section 14.
In the dust supply speed adjustment section 14, the dust supply speed setting device 1
The set value S0 , which was initialized in advance based on the state of the garbage in step 2, is corrected by the correction value ΔS,
A speed change instruction is given to the dust supply speed drive device 15.
一方、重量計測時にレベル計測装置７とごみ重
量計測装置８とによつて演算された見掛比重値
は、低位発熱量演算部１６に出力され、低位発熱
量演算部１６で重量計測時毎の低位発熱量が演算
され、この値が記憶・演算・遅延回路１７に出力
される。記憶・演算・遅延回路１７では、この重
量計測時毎に低位発熱量を記憶演算することによ
り、各回焼却炉に送り込まれたごみの低位発熱量
を把握し、これに基づくデータ（例えば、３回分
の平均値）を、所定時間を遅延させた後、燃焼空
気量補正演算部２２及び燃焼空気温度補正演算部
２４へ出力する。この遅延時間は、図示しない制
御部により前記給じん速度駆動装置１５との速度
比が予め設定されている火格子速度駆動装置１８
からの速度信号に基づきごみが給じん装置５から
火格子６の燃焼中心に達する時間を演算し設定さ
れる。そして、燃焼空気量補正演算部２２では、
このデータにい基づいて補正すべきΔVを求め、
燃焼空気量調節装置２３出力されて燃焼空気量を
最適な状態に調節する。燃焼空気温度補正演算部
２４では、このデータに基づいて補正すべき
ΔTaを求め、燃焼空気温度調節計２５を介して
燃焼空気温度調節装置２６に出力され、燃焼空気
温度を最適な状態に調節する。 On the other hand, the apparent specific gravity value calculated by the level measuring device 7 and the garbage weight measuring device 8 at the time of weight measurement is output to the lower calorific value calculating section 16, and the lower calorific value calculating section 16 calculates the value for each weight measurement. The lower calorific value is calculated, and this value is output to the storage/calculation/delay circuit 17. The memory/calculation/delay circuit 17 stores and calculates the lower calorific value at each time of weight measurement to grasp the lower calorific value of the waste sent to the incinerator each time, and calculates data based on this (for example, for three times). (average value of This delay time is determined by the grate speed drive device 18 whose speed ratio with respect to the dust supply speed drive device 15 is set in advance by a control section (not shown).
The time required for the dust to reach the combustion center of the grate 6 from the dust supply device 5 is calculated and set based on the speed signal from the dust supply device 5. Then, in the combustion air amount correction calculation section 22,
Find the ΔV to be corrected based on this data,
The combustion air amount adjusting device 23 outputs the amount of combustion air to adjust the amount of combustion air to an optimum state. The combustion air temperature correction calculation section 24 calculates ΔTa to be corrected based on this data, and outputs it to the combustion air temperature adjustment device 26 via the combustion air temperature controller 25, which adjusts the combustion air temperature to an optimal state. .
さらに、演算された低位発熱量は、前記燃焼空
気の制御に使われるほか、記憶・演算・遅延回路
１７で記憶された後、上記同様に所定時間が遅延
されて炉内温度補正演算部１９に出力される。よ
つて、炉内温度補正演算部１９では補正すべき
ΔTfを求め、炉内温度調節計２０へそのデータを
出力する。炉内温度調節計２０では、前記データ
に基づいて炉内温度調節装置２１を制御する。例
えば、炉内温度調節装置２１により常温の２次空
気を炉内に供給して炉内湿度を調節する。この炉
内温度調節計２０の値は、一般に750℃〜950℃の
範囲内におさまるように設定しているが、低位発
熱量が急変して燃焼空気の調整でカバーできない
と予測された時は、事前に炉内温度を逆方向に設
定して温度変化を吸収する。図中の符号２７は、
焼却炉出口付近に設けられた炉内温度検出端で、
検出された信号Ｔを炉内温度調節計２０に出力す
る。 Furthermore, the calculated lower calorific value is not only used for controlling the combustion air but also stored in the memory/calculation/delay circuit 17 and then delayed by a predetermined time in the same way as described above and sent to the furnace temperature correction calculation unit 19. Output. Therefore, the furnace temperature correction calculation unit 19 calculates ΔTf to be corrected and outputs the data to the furnace temperature controller 20. The furnace temperature controller 20 controls the furnace temperature controller 21 based on the data. For example, the oven temperature control device 21 supplies room temperature secondary air into the oven to adjust the oven humidity. The value of this furnace temperature controller 20 is generally set within the range of 750°C to 950°C, but if the lower heating value suddenly changes and it is predicted that it cannot be covered by adjusting the combustion air. , the temperature inside the furnace is set in the opposite direction in advance to absorb the temperature change. The code 27 in the figure is
At the incinerator temperature detection terminal installed near the incinerator outlet,
The detected signal T is output to the furnace temperature controller 20.
（発明の効果）
以上述べたように、本発明の方法によれば、給
じん装置によるごみの供給動作後もしくは、給じ
ん装置にごみが投入された後の安定した時にごみ
重量を測定積算し、給じ装置の速度の補正を行つ
ているため、火格子へのごみの供給量が安定す
る。また、ごみの低位発熱量を予め推定し、この
ごみが火格子の燃焼中心に達する時間を遅延させ
た後、前記推定した低位発熱量に基づいて燃焼空
気量とその空気温度とを適時適正な値に調節する
とともに、この低位発熱量に基づいて炉内温度調
整装置により炉内温度を調整することで燃焼（炉
内温度）の安定化を図ることができる。このよう
に低位発熱量を推定したごみが燃焼中心点に達し
た時にはそのごみの低位発熱量に応じた燃焼空気
量、さらにその空気温度をも制御するとともに、
炉内温度調整装置により炉内温度も事前に制御す
るため、安定性の高いフイードフオワード制御を
行うことができる。このため、ごみを最適な状態
で燃焼させることができ、焼却灰中に残留する未
燃分は減少するとともに、炉内温度の過昇による
クリンカ発生や火格子の焼損が防止でき、また、
炉内温度低下によるダイオキシン発生も抑止でき
る。(Effects of the Invention) As described above, according to the method of the present invention, the weight of garbage is measured and integrated after the dust supply device operates to supply garbage or when the garbage is stabilized after being put into the dust supply device. Since the speed of the feeding device is corrected, the amount of waste fed to the grate is stabilized. In addition, after estimating the lower calorific value of the waste in advance and delaying the time when the waste reaches the combustion center of the grate, the amount of combustion air and the air temperature are adjusted in a timely and appropriate manner based on the estimated lower calorific value. It is possible to stabilize the combustion (in-furnace temperature) by adjusting the in-furnace temperature using the in-furnace temperature adjustment device based on this lower calorific value. When the waste whose lower calorific value has been estimated in this way reaches the combustion center point, the combustion air amount and air temperature are controlled according to the lower calorific value of the waste.
Since the furnace temperature is also controlled in advance by the furnace temperature adjustment device, highly stable feed forward control can be performed. Therefore, garbage can be combusted in optimal conditions, the amount of unburned matter remaining in the incineration ash is reduced, and clinker generation and grate burnout due to excessive rise in temperature in the furnace can be prevented.
It is also possible to suppress the generation of dioxin due to a decrease in the temperature inside the furnace.
第１図は本発明のごみ焼却炉における燃焼制御
装置の概略を示す構成図、第２図は制御系を示す
ブロツク図である。
３……ホツパ、５……給じん装置、７……レベ
ル計測装置、８……ごみ重量計測装置、１１……
比較積算部、１３……速度補正演算部、１７……
記憶・演算・遅延回路。
FIG. 1 is a block diagram showing an outline of a combustion control device in a garbage incinerator according to the present invention, and FIG. 2 is a block diagram showing a control system. 3... Hopper, 5... Dust supply device, 7... Level measuring device, 8... Garbage weight measuring device, 11...
Comparison/integration section, 13...Speed correction calculation section, 17...
Memory/arithmetic/delay circuit.
Claims (1)
たごみを炉内の火格子に供給する給じん装置を備
えたごみ焼却炉において、 前記ごみ投入ホツパを含む給じん装置全体のご
み重量もしくは代表的な複数点のごみ重量を、ご
み重量計測装置により給じん装置のごみ供給動作
後もしくはごみ投入後に計測し、該ごみ重量とご
み重量設定器で設定された重量との差を単位時間
積算し、その積算量に応じて前記給じん装置によ
るごみの供給速度を制御し、一方、レベル計測装
置により計測したごみ容積と前記ごみ重量とによ
りごみの見掛比重を演算するとともに、見掛比重
からごみの低位発熱量を演算し、低位発熱量を演
算したごみが給じん装置から火格子の燃焼中心位
置に達するまでの時間を火格子からの移送速度情
報により遅延させた後、上記低位発熱量に基づい
て炉内に供給する燃焼空気量とその空気温度を制
御するとともに、該低位発熱量に基づいて炉内温
度調整装置により炉内温度を制御することを特徴
とするごみ焼却炉の燃焼制御方法。[Scope of Claims] 1. In a garbage incinerator equipped with a dust supply device that supplies garbage input from a garbage input port such as a garbage input hopper to a grate in the furnace, the entire dust supply device including the garbage input hopper Measure the weight of garbage or the weight of garbage at representative multiple points using a garbage weight measurement device after the dust supply device operates to supply garbage or after inputting garbage, and calculate the difference between the garbage weight and the weight set with the garbage weight setting device. is integrated over a unit time, and the feeding speed of the waste by the dust supply device is controlled according to the integrated amount, while the apparent specific gravity of the waste is calculated based on the waste volume measured by the level measuring device and the waste weight. , After calculating the lower calorific value of the garbage from the apparent specific gravity, and delaying the time for the garbage whose lower calorific value has been calculated to reach the combustion center position of the grate from the dust supply device using the transfer speed information from the grate. , a waste characterized in that the amount of combustion air supplied to the furnace and the temperature of the air are controlled based on the lower heating value, and the temperature inside the furnace is controlled by a furnace temperature adjustment device based on the lower heating value. Combustion control method for incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25784686A JPS63113215A (en) | 1986-10-29 | 1986-10-29 | Method of controlling combustion of incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25784686A JPS63113215A (en) | 1986-10-29 | 1986-10-29 | Method of controlling combustion of incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63113215A JPS63113215A (en) | 1988-05-18 |
| JPH0518014B2 true JPH0518014B2 (en) | 1993-03-10 |
Family
ID=17311962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25784686A Granted JPS63113215A (en) | 1986-10-29 | 1986-10-29 | Method of controlling combustion of incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63113215A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2737861B2 (en) * | 1991-07-08 | 1998-04-08 | 三機工業株式会社 | Combustion control method for refuse incinerator |
| DE69724273T2 (en) | 1997-10-02 | 2004-06-09 | Nkk Corp. | METHOD FOR COMBUSTION CONTROL OF A WASTE INCINERATOR |
| JP3856994B2 (en) * | 1999-09-16 | 2006-12-13 | 株式会社荏原製作所 | Combustion control method for waste incineration plant |
| WO2001065178A1 (en) * | 2000-02-28 | 2001-09-07 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | System for continuous thermal combustion of matter, such as waste matter |
| JP6153090B2 (en) * | 2014-05-28 | 2017-06-28 | Ｊｆｅエンジニアリング株式会社 | Waste incinerator and waste incineration method |
| JP7150596B2 (en) * | 2018-12-28 | 2022-10-11 | 川崎重工業株式会社 | Garbage supply speed estimation device and garbage supply speed estimation method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532267A (en) * | 1972-10-17 | 1978-01-11 | Bii Uein Toruuman | Pearling method of husked rice |
| JPS5221831A (en) * | 1975-08-11 | 1977-02-18 | Sanyo Electric Co Ltd | Paper feed device |
| JPS6056964B2 (en) * | 1978-03-17 | 1985-12-12 | 日本鋼管株式会社 | How to control a garbage incinerator |
| JPS5546359A (en) * | 1978-09-29 | 1980-04-01 | Nippon Kokan Kk <Nkk> | Incineration control method for city waste incineration |
| JPS56914A (en) * | 1979-06-16 | 1981-01-08 | Kubota Ltd | Dust incinerator |
| JPS58214711A (en) * | 1982-06-07 | 1983-12-14 | Takuma Co Ltd | Method for automatically controlling combustion of refuse incinerator |
-
1986
- 1986-10-29 JP JP25784686A patent/JPS63113215A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63113215A (en) | 1988-05-18 |
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