JPS59129316A - Dust feeding control device in refuse incinerater - Google Patents

Abstract

PURPOSE:To feed dust under its best suited condition for drying grids by a method wherein a dust feeder is controlled in response to sensed values of pressure below the drying grids and volume of air to be fed below the drying grids. CONSTITUTION:A differential pressure is taken out through a differential pressure signal transmitter 20 from a pressure gauge 17 for detecting pressure in a furnace and a pressure gauge 18 for detecting pressure below grids. In turn, a value of the air flow meter 19 below the grids is detected and a signal is generated from a control device 23 to an operating device 24 for a dust feeding device 16 in reference to a value calculated by an air passage resistance calculater 21. That is, in case that the dried grids show high air passage resistance above and below the grids, this means that there are large amount of dusts or the dusts contain large amount of moisture and generates a signal for terminating the dust feeding device 16. In turn, in case that a low air passage resistance is found, this means that less volume of dust is found in the drying grid or dusts are dried, so that a signal for operating the dust feeding device 16 is generated. Thereby, it is possible to feed the dust under the most suited condition for the drying grids.

Description

【発明の詳細な説明】 本発明はごみ焼却炉の燃焼制御に関するものある。本発
明の対象とするこみ焼却炉は第１図に示す如く収集され
た都市こみをプラットホーム１よりこみピッ１へ２に蓄
積し、続（焼却炉において燃焼せしめる。即ちこみクレ
ーン３によりごみピッ１〜２内のごみをグラブ４によっ
て把持運搬しホッパ〜５に投入づる。ホッパー５に投入
されたごみは焼却炉内の火格子上に落下し燃焼される。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to combustion control in a waste incinerator. As shown in FIG. 1, the garbage incinerator that is the object of the present invention accumulates collected municipal garbage from a platform 1 into a garbage pit 1 2 and then burns it in the incinerator. The garbage in ~2 is gripped and carried by a grab 4 and thrown into the hopper ~5.The garbage thrown into the hopper 5 falls onto the grate in the incinerator and is burned.

火格子のホッパー５に近い方を乾燥火格子６と称し、ご
みの乾燥を司り次の段の燃焼火格子にごみを揺動移動せ
しめる。乾燥火格子６に次ぐ燃焼火格子を前部燃焼火格
子７、後部燃焼火格子８とする。燃焼室９で発生ずる燃
焼カスはボイラ１ｏを通過して冷１ｉＩｌされ電気集塵
機１１で除塵され誘引送風機１２にＪ：り煙突１３がら
排出される。火格子下には灰排出用ポツパーがあり灰分
は灰出コンベア１４により灰ビット１５に排出される。The side of the grate near the hopper 5 is called a drying grate 6, which controls the drying of the waste and causes the waste to be oscillated to the next stage of combustion grate. The combustion grate next to the drying grate 6 is a front combustion grate 7 and a rear combustion grate 8. The combustion scum generated in the combustion chamber 9 passes through a boiler 1o, is cooled, is removed by an electric precipitator 11, and is discharged through an induced blower 12 through a chimney 13. There is a popper for discharging ash under the grate, and the ash is discharged into an ash bit 15 by an ash discharging conveyor 14.

一方燃焼用空気は火格子下部より上部に火格子を通過づ
゛る如く送用路が段Ｃプられる。On the other hand, the combustion air is fed in steps C so that it passes through the grate from the bottom to the top of the grate.

従来こみ焼却炉において運転管理者は炉内状況を炉内に
設けた温度ｆｉｔ　ｉＰ３よび炉外がらの目視により、
炉内温度、乾燥火格子６上及び燃焼穴４８子７．８上の
ごみのＪ９さおよびごみの性状を観察し、ごみの燃焼状
況を把握し、給塵串、火格子の送り吊を調節していた。Conventionally, in a waste incinerator, the operation manager can check the condition inside the furnace by checking the temperature fit iP3 installed inside the furnace and visually observing the outside of the furnace.
Observe the temperature inside the furnace, the J9 size of the garbage on the drying grate 6 and the combustion hole 48, and the properties of the garbage, understand the combustion status of the garbage, and adjust the dust feed skewer and grate feeding hanging. Was.

、これらご力焼Ｋｌ炉（よｌｌｉ代の発達とＪｔにこみ
焼却を自動的に制御し運Φ人する手段が開発されつつあ
る。その一つの手段とし゛（、乾燥火格子６の動作レベ
ルを火格子の負部により変えることによってごみの流動
′ａ度を変化させることができるーｂのがある。With the development of these power-burning Kl furnaces, means are being developed to automatically control and control the incineration in the Jt. One such means is The degree of waste flow can be varied by changing the negative part of the grate.

しかし、乾燥火格子上のごみの＠岸が変化（］／ζりご
みの性状が変化Ｊると、乾燥火格子上のごみの流速が変
化する。例えば、含水率の高い低ｎごみが投入されると
乾燥火格子での洲ｔ￥１１時間を良くとることが望まし
くくにも拘らず、乾燥火格子の動Ｐルベルを一定にして
いたのでは燃焼火格子−Ｖに厚いごみの層ができてしま
い、焼却に支障をきた′Ｌｊ’　、、ごみ焼却に関り−
る先行技術としＣ特１７ｔｌ昭５１〜２０４８１号公報
がある。該公報に記載されているものは、燃焼火格子上
のごみの層厚を測定もしくは推定し、該測定値もしくは
推定ｉＭによって層厚が極端に厚くならないにうに乾燥
火格子駆動装置、燃焼欠格゛子駆動装置おにび空気送入
装置の少なくとも１つを制御乃ることを特徴とづる焼ｋ
］炉の制御装置が記載されている。本発明はこのような
ごみ焼却炉にお（づるごみ乾燥火格子に最も良好な状態
でごみを送給し燃焼づるように工大したものである。However, when the @bank of the garbage on the drying grate changes (]/ζ the properties of the garbage change, the flow velocity of the garbage on the drying grate changes. For example, low n garbage with a high moisture content is input Although it is desirable to spend a good amount of time on the dry grate, if the dynamic P level of the dry grate was kept constant, a thick layer of dirt would form on the combustion grate -V. Regarding garbage incineration, 'Lj' caused problems with incineration.
As a prior art, there is C.Toku 17tl Publication No. 51-20481. What is described in this publication measures or estimates the thickness of the layer of dust on the combustion grate, and uses the measured value or estimated value iM to prevent the layer thickness from becoming extremely thick. Zuruyaki k characterized by controlling at least one of the child drive device and the air supply device.
] A furnace control device is described. The present invention has been developed in such a garbage incinerator so that the garbage can be fed to the garbage drying grate in the best condition and burned.

本発明はごみを供給するホッパー下端部にごみを乾燥火
格子上に送給づ゛る給塵装置を備え、焼却炉内圧力を検
出する圧力ｈ１を火格子上方に設けると共に、乾燥火格
子下の圧力を検出づる圧力Ｓ１と乾燥火格子下に送給す
る空気量を検出Ｊる流量計とを設（ブ、火格子上下の圧
ノコ計及び流量計の検出値によって前記給塵装置を制御
するようにしたものである。The present invention is equipped with a dust supply device at the lower end of the hopper that feeds the waste to feed the waste onto the drying grate, a pressure h1 for detecting the pressure inside the incinerator is provided above the grate, and a A flow meter is installed to detect the pressure S1 and the amount of air fed under the drying grate. It was designed to do so.

以下図によって本発明の詳細な説明すると、第２図は燃
焼′９９と火格子を示した図で、ホッパー５の下端部に
給塵装置１６を有する。炉内には炉内圧検出用圧力計１
７があり、一方乾燥火格子６の下に火格子下空気検出用
圧〕〕計１８及び空気流路に火格子下空気流量検出用流
ｆｉ　ｆｉ＋　１９を有する。The present invention will be described in detail with reference to the drawings below. FIG. 2 shows a combustion '99 and a fire grate, and a dust feeder 16 is provided at the lower end of the hopper 5. There is a pressure gauge 1 inside the furnace to detect the furnace internal pressure.
On the other hand, under the drying grate 6 there is a pressure meter 18 for detecting the air under the grate, and in the air flow path there is a flow fi fi+ 19 for detecting the air flow rate under the grate.

次に本発明の（／Ｉ動状況について説明覆ると、第２図
にお（〕る炉炉内圧検出用圧力計と火格子下１１力検出
用ｇ力泪１Ｂとから差圧弁イに器２０により差圧をとり
出し、一方火格子下の空気流量５１１９の舶を検出し−
（通気抵抗演粋器２１で・演算さ４′シた藺によ０制御
装置２３から給塵装置１６の作ｉｌＪ装置α２４に伯８
をざＩる。即ら乾燥火格子の、に”Ｆσ）通気抵抗が大
きい場合には、ごみか多［４ｔこあるか水分を多く含ん
でいることを意味し、給塵装Ｍを停止さＵる信号を発す
る。一方、通気１１又１八が小さい場合は、乾燥段十の
ごみｍ　））＜　くしな０１力ＡまＩζはごみか乾燥し
ているので、給塵装置１６を作動せしめる仁君を光Ｊる
。制御装置２３ｈ１らθ）信号で作動装置２４への指令
方法として、’ｔｉｅｒ　；ホσ）様に給朗装岡の停止
あるいは作動のｊＦｔ令を−Ａン゛オフによって操作し
給塵串を調整するよう（こした方式と、火格子」−下の
差圧及び送給空気量を検出し通気抵抗を演算すること（
ま同じであるｌｆｉ給塵装置停止タイマ、又は給塵装置
作動法１立を連続調整せしめる方式とがある。Next, we will explain the operating situation of the present invention.As shown in FIG. The differential pressure is taken out by
(The ventilation resistance calculator 21 calculates 4', and the dust supply device 16 is created from the 0 control device 23.
I will save you money. In other words, if the ventilation resistance of the drying grate is large (Fσ), it means that there is a lot of garbage or moisture, and a signal is issued to stop the dust supply system M. On the other hand, if the ventilation 11 or 18 is small, the dust in the drying stage 10 m)) As a method of commanding the actuating device 24 using the control device 23h1 and θ) signals, the dust feeding skewer is operated by operating the jFt command for stopping or starting the feeder feeder by -A turn OFF like 'tier; hoσ). To adjust (strain method and grate) - detect the differential pressure below and the amount of air supplied and calculate the ventilation resistance (
There is also an lfi dust supply device stop timer, which is the same, or a method that continuously adjusts the dust supply device operating method.

本発明はこみ焼ｕ１炉の炉内渇麿を検出して火格子の作
動及び燃焼空気送給量を制御する総合制御に（＝１加し
、最も合理的（こ給塵装置を作動せしめるようにしたの
で、従来ごみの乾燥度によって不完全燃焼があったり、
ごみの供給が燃焼状況によって少な過ぎたりした欠点が
完全に解消し、的１イ「なごみの乾燥が行われるので燃
焼域へのご力の供給を均一にし、燃焼が安定して行える
ので安定したボイラの熱源として採用することができる
ものである。The present invention adds (=1) to the comprehensive control that detects the dryness in the furnace of the komi-burning U1 furnace and controls the operation of the grate and the amount of combustion air supplied. Conventionally, incomplete combustion may occur depending on the dryness of the waste,
The drawback that the supply of garbage is too small depending on the combustion conditions has been completely resolved, and the goal 1. It can be used as a heat source for boilers.

、４、図面の簡単な説明 第１図Ｇ：ｉこみ焼却炉の側断面図、第２図はこみ焼却
炉の一部を示す拡大側断面図おＪ：び本発明を説明する
ための制御系統図の例を示ず。, 4. Brief description of the drawings Figure 1: G: A side sectional view of the trash incinerator, Figure 2: An enlarged side sectional view showing a part of the trash incinerator, and J: Controls for explaining the present invention. No example phylogenetic diagram shown.

１・・・グラブ１〜ホーム、２・・・ごみビット、３・
・・ごみクレーン、４・・・グラブ、５・・・ポツパー
、６・・・乾燥火格子、７．８・・・燃焼火格子、９・
・・焼却、　　炉、１０・・・ボイラ、１１・・・電気
集塵機、１２・・・誘引送風機、１３・・・煙突、１４
・・・灰量コンベア、１５・・・灰ビット、１６・・・
給塵装置、１７．１８・づ１−力旧、］９・・・流用旧
、２０・・・差Ｉｔ発信器、２１・・・通気抵抗演算器
、２２・・・設定器、２３・・・制御装置、２４・・・
作動波間。1... Grab 1 ~ Home, 2... Garbage bit, 3...
...Garbage crane, 4...Grab, 5...Popper, 6...Drying grate, 7.8...Combustion grate, 9.
...Incineration, Furnace, 10...Boiler, 11...Electrostatic precipitator, 12...Induced blower, 13...Chimney, 14
...Ash amount conveyor, 15...Ash bit, 16...
Dust supply device, 17.18・zu1-force old,] 9... Diversion old, 20... Difference It transmitter, 21... Ventilation resistance calculator, 22... Setting device, 23...・Control device, 24...
Working wave interval.

特８′［出願人代理人氏名 弁１１１リ　角　［１１尭　布パ、：Special 8' [Name of applicant's agent] Valve 111 corner

Claims (1)

【特許請求の範囲】[Claims] ごみを供給覆るホッパーと、供給されたごみを乾燥する
乾燥火格子と、該乾燥したごみを燃焼ηる燃焼火格子と
を右Ｊるごみ焼１ｌＩＩ炉において、前記ホッパー１；
端部にごみを乾燥火格子上に送給ヅる給塵装］Ｕを有し
てなり、炉内圧力を検出する圧力Ｊ１を火格子上方に設
けると共に乾燥火格子下には該火格子に送給づる空気圧
を検出ザる圧力ｈ１と空気邑を検出する流量計とを股１
′Ｊ、該）１−力削及び゛流量計の検出値によって前記
給塵装動を制御づることを特徴としたごみ焼ｈａ炉にａ
５Ｕる給塵制御波Ｕり。In a garbage incinerator 1lII furnace that includes a hopper for supplying and covering garbage, a drying grate for drying the supplied garbage, and a combustion grate for burning the dried garbage, the hopper 1;
A dust supply device U is provided at the end of the drying grate to feed the waste onto the drying grate, and a pressure J1 for detecting the pressure inside the furnace is provided above the grate, and a pressure J1 is provided below the drying grate to The pressure h1 that detects the air pressure being fed and the flow meter that detects the air pressure are connected to each other.
'J, said) 1-A to the waste incineration furnace characterized by controlling the dust supply device according to the detection value of the force cutting and 'flow meter.
5U dust supply control wave.