JPH0217776B2 - - Google Patents
Info
- Publication number
- JPH0217776B2 JPH0217776B2 JP7193085A JP7193085A JPH0217776B2 JP H0217776 B2 JPH0217776 B2 JP H0217776B2 JP 7193085 A JP7193085 A JP 7193085A JP 7193085 A JP7193085 A JP 7193085A JP H0217776 B2 JPH0217776 B2 JP H0217776B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- auxiliary fuel
- waste
- supplied
- control system
- 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
Links
- 239000000446 fuel Substances 0.000 claims description 42
- 239000002699 waste material Substances 0.000 claims description 24
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000002901 radioactive waste Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010812 mixed waste Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Incineration Of Waste (AREA)
Description
【発明の詳細な説明】
技術分野
この発明は、放射性廃棄物焼却炉において、補
助燃料の供給量と混合廃棄物の供給量を調節する
ことにより、安定した燃焼状態を維持することの
出来る燃焼制御装置に関する。Detailed Description of the Invention Technical Field The present invention provides combustion control that can maintain a stable combustion state by adjusting the supply amount of auxiliary fuel and the supply amount of mixed waste in a radioactive waste incinerator. Regarding equipment.
従来技術
従来、放射性廃棄物の焼却炉で廃棄物の焼却を
行う場合には、焼却炉出口の温度を検出し、その
温度が一定となるように、補助燃料の供給量を調
節していた。Prior Art Conventionally, when incinerating waste in a radioactive waste incinerator, the temperature at the incinerator outlet was detected and the amount of auxiliary fuel supplied was adjusted so that the temperature remained constant.
例えば、第１図に示すような従来の放射性廃棄
物の焼却炉は、サイクロン浮遊燃焼方式によつて
廃棄物の焼却を行うものであり、角型焼却炉本体
１の第１燃焼室２において、一次空気入口３から
の燃焼空気の噴出、補助燃料取入口４からの燃料
の噴出および二次空気入口５からの燃焼空気の噴
出によつてサイクロン流を形成し、バーナー火炎
によつて廃棄物案内管６から導入された被焼却物
の昇温−乾燥−（蒸発）−着火を行い、第２燃焼室
７以降を通過する際において燃焼が完了するよう
になつているものであり、焼却炉出口８における
廃棄ガス温度を検出し、この温度が一定となるよ
うに、調節計によつて補助燃料取入口４に接続さ
れた調整弁の開度を調節して、燃料の供給量の増
減を行つていた。 For example, a conventional radioactive waste incinerator as shown in FIG. 1 uses a cyclone floating combustion method to incinerate waste, and in the first combustion chamber 2 of the square incinerator body 1, A cyclone flow is formed by the jet of combustion air from the primary air inlet 3, the jet of fuel from the auxiliary fuel intake port 4, and the jet of combustion air from the secondary air inlet 5, and the waste is guided by the burner flame. The material to be incinerated introduced from the pipe 6 is heated, dried, (evaporated) and ignited, and combustion is completed when it passes through the second combustion chamber 7 and beyond. The temperature of the waste gas at 8 is detected, and the amount of fuel supplied is increased or decreased by adjusting the opening degree of the regulating valve connected to the auxiliary fuel intake port 4 using a controller so that this temperature remains constant. It was on.
またこの従来の焼却炉においては、廃棄物案内
管６から導入される廃棄物が単一廃棄物（例えば
紙やポリエチレンシート）の時には、燃焼状態は
比較的安定しているが、混合廃棄物の場合には、
混合状態が不均一であり燃焼状態が不安定となる
ため、通常紙とポリエチレンシートとを分解し
て、交互に供給を行つていた。 In addition, in this conventional incinerator, when the waste introduced from the waste guide pipe 6 is a single waste (for example, paper or polyethylene sheet), the combustion condition is relatively stable, but when mixed waste in case of,
Since the mixing state is non-uniform and the combustion state becomes unstable, ordinary paper and polyethylene sheets are separated and fed alternately.
このため従来の燃焼制御によつては、廃棄物案
内管６に接続された廃棄物供給用ロータリーバル
ブの回転数が一定であるため、ポリエチレンシー
トは高密度、高発熱量であるので、調節計により
燃料消費量は、極端に減少し、また紙の場合に
は、低密度、低発熱量であるため調節計により燃
料消費量が増大し、この繰り返しによつて大きな
ハンチングが起り、このため燃焼状態が安定せ
ず、不完全燃焼の原因となるといつた問題が生じ
ていた。 For this reason, in conventional combustion control, the rotation speed of the waste supply rotary valve connected to the waste guide pipe 6 is constant, and since the polyethylene sheet has a high density and a high calorific value, the controller In the case of paper, since it has a low density and low calorific value, the fuel consumption increases due to the controller, and this repetition causes large hunting, which reduces combustion. The problem was that the conditions were unstable and caused incomplete combustion.
目 的
この発明は、上述のような従来の燃焼制御方法
における問題点を解消するために為されたもので
あつて、焼却炉において安定した燃焼状態を得る
ことが出来るとともに、燃料消費の効率化を図る
ことの出来る放射性廃棄物焼却炉の燃焼制御装置
を提供することを目的とするものである。Purpose This invention was made in order to solve the problems in the conventional combustion control method as described above, and it is possible to obtain a stable combustion state in an incinerator and to improve the efficiency of fuel consumption. The object of the present invention is to provide a combustion control device for a radioactive waste incinerator that can achieve the following.
構 成
この発明は、放射性廃棄物焼却炉の炉出口温度
を温度計で検出し、この炉出口温度が上昇した場
合には補助燃料供給調節弁を閉方向に調節して補
助燃料の供給量を減少させ、温度が下降すると調
節弁を開方向に調節して補助燃料の供給量を増加
させる炉出口温度による制御系と、前記補助燃料
の供給量を流量計で検出して、供給量が減少する
と廃棄物供給用ロータリーバルブの回転数を減少
させて、廃棄物の供給量を減少させ、補助燃料の
供給量が増加すると廃棄物供給用ロータリーバル
ブの回転数を増加して、廃棄物の供給量を増加さ
せる補助燃料供給量による制御系とを具えている
ことを特徴とするものである。Configuration This invention detects the furnace outlet temperature of a radioactive waste incinerator with a thermometer, and when the furnace outlet temperature rises, adjusts the auxiliary fuel supply control valve in the closing direction to control the supply amount of auxiliary fuel. A control system based on the furnace outlet temperature that increases the amount of auxiliary fuel supplied by opening a control valve when the temperature drops, and a flowmeter that detects the amount of auxiliary fuel supplied and decreases the amount of auxiliary fuel supplied. Then, the rotation speed of the waste supply rotary valve is decreased to reduce the waste supply amount, and when the supply amount of auxiliary fuel increases, the rotation speed of the waste supply rotary valve is increased to reduce the waste supply amount. The present invention is characterized by comprising a control system based on an auxiliary fuel supply amount that increases the amount of auxiliary fuel supplied.
以下この発明を、第２図に示す実施例に基づい
てさらに詳細に説明を行うと、この燃焼制御装置
は、炉出口温度による制御系と補助燃料供給量に
よる制御系の二つの制御系を有するものである。 The present invention will be explained in more detail below based on the embodiment shown in FIG. 2. This combustion control device has two control systems: a control system based on the furnace outlet temperature and a control system based on the auxiliary fuel supply amount. It is something.
炉出口温度制御系は、温度計１１によつて炉出
口温度を検出し、定常制御プログラム（PID制
御）１２に基づいて調節計１３で補助燃料供給調
節弁１４の開度を調節し、炉出口温度に対応して
補助燃料供給量の増減を行う。この炉出口温度制
御系は、前述した従来の制御系と同じものであ
る。 The furnace outlet temperature control system detects the furnace outlet temperature with a thermometer 11, adjusts the opening degree of the auxiliary fuel supply control valve 14 with a controller 13 based on a steady control program (PID control) 12, and controls the furnace outlet temperature. The amount of auxiliary fuel supplied is increased or decreased depending on the temperature. This furnace outlet temperature control system is the same as the conventional control system described above.
そしてこの発明は、上記炉出口温度制御系に燃
料供給量制御系を付加したものであつて、この燃
料供給量制御系は、調節弁１４の調節によつて炉
内に供給される補助燃料の供給量を流量計１５で
検出し、この検出した補助燃料供給量により、補
助燃料流量調節計１６およびインバータ１７を介
して廃棄物供給用ロータリーバルブ１８の回転数
を調節し、補助燃料供給量に対応して廃棄物供給
量を同時に調節するものである。 This invention adds a fuel supply amount control system to the above-mentioned furnace outlet temperature control system, and this fuel supply amount control system controls the amount of auxiliary fuel supplied into the furnace by adjusting the control valve 14. The supply amount is detected by the flow meter 15, and the rotation speed of the waste supply rotary valve 18 is adjusted according to the detected auxiliary fuel supply amount via the auxiliary fuel flow rate controller 16 and the inverter 17. The waste feed rate is simultaneously adjusted accordingly.
上記燃焼制御装置においては、炉出口温度が上
昇すると、この温度上昇が温度計１１で検出さ
れ、定常制御プログラム１２に基づいて補助燃料
供給調節弁１４を閉方向に調節し、補助燃料の供
給量を減少させる。そしてこの調節弁１４によつ
て調節された補助燃料供給量を流量計１５で検出
し、インバータ１７によつて廃棄物供給用ロータ
リーバルブ１８の回転数を減少させて、廃棄物の
供給量を減少させる。 In the above combustion control device, when the furnace outlet temperature rises, this temperature rise is detected by the thermometer 11, and the auxiliary fuel supply control valve 14 is adjusted in the closing direction based on the steady-state control program 12, and the amount of auxiliary fuel supplied is decrease. Then, the flow meter 15 detects the auxiliary fuel supply amount adjusted by the control valve 14, and the inverter 17 reduces the rotation speed of the waste supply rotary valve 18 to reduce the waste supply amount. let
炉出口温度が下降した場合には、上記とは反対
に補助燃料供給量が増加され、この供給量の増加
に伴なつて廃棄物供給量が増加される。 When the furnace outlet temperature decreases, the amount of auxiliary fuel supplied is increased, contrary to the above, and the amount of waste supplied is increased as the amount of auxiliary fuel is increased.
効 果
以上のようにこの発明は、炉出口温度によつて
補助燃料供給量を調節し、この補助燃料供給量の
増減に伴つて廃棄物供給量を調節し増減させるこ
とによつて、急速な負荷変動に対しては、補助燃
料の供給量の調節によつて素早く応答することが
出来、しかも、廃棄物による供給熱量をほぼ一定
に保つことが出来るので、炉全体の熱負荷を一定
に保つことが出来て、安定した燃焼状態を得るこ
とが出来、不完全燃焼を解消することが出来ると
いう優れた効果を有するものである。Effects As described above, the present invention adjusts the amount of auxiliary fuel supplied according to the furnace outlet temperature, and adjusts and increases or decreases the amount of waste supplied in accordance with the increase or decrease in the amount of auxiliary fuel supplied, thereby rapidly increasing or decreasing the amount of waste supplied. It is possible to quickly respond to load fluctuations by adjusting the supply amount of auxiliary fuel, and the amount of heat supplied by waste can be kept almost constant, so the heat load of the entire furnace can be kept constant. This has the excellent effect of being able to achieve a stable combustion state and eliminate incomplete combustion.
第１図は従来の放射性廃棄物焼却炉を示す側断
面図、第２図はこの発明の一実施例を示すフロー
図である。
１１……温度計、１２……定常制御プログラ
ム、１３……調節計、１４……補助燃料供給調節
弁、１５……流量計、１６……補助燃料流量調節
計、１７……インバータ、１８……廃棄物供給用
ロータリーバルブ。
FIG. 1 is a side sectional view showing a conventional radioactive waste incinerator, and FIG. 2 is a flow diagram showing an embodiment of the present invention. 11... Thermometer, 12... Steady control program, 13... Controller, 14... Auxiliary fuel supply control valve, 15... Flow meter, 16... Auxiliary fuel flow rate controller, 17... Inverter, 18... …Rotary valve for waste supply.
Claims (1)
検出し、この炉出口温度が上昇した場合には補助
燃料供給調節弁を閉方向に調節して補助燃料の供
給量を減少させ、温度が下降すると調節弁を開方
向に調節して補助燃料の供給量を増加させる炉出
口温度による制御系と、前記補助燃料の供給量を
流量計で検出して、供給量が減少すると廃棄物供
給用ロータリーバルブの回転数を減少させて、廃
棄物の供給量を減少させ、補助燃料の供給量が増
加すると廃棄物供給用ロータリーバルブの回転数
を増加して、廃棄物の供給量を増加させる補助燃
料供給量による制御系とを具えていることを特徴
とする放射性廃棄物焼却炉の燃焼制御装置。1 The temperature at the outlet of the radioactive waste incinerator is detected with a thermometer, and if the temperature at the outlet of the reactor rises, the auxiliary fuel supply control valve is adjusted in the closing direction to reduce the amount of auxiliary fuel supplied, and the temperature is lowered. A control system based on the temperature at the furnace outlet that adjusts the control valve in the open direction to increase the amount of auxiliary fuel supplied when it descends, and a flowmeter that detects the amount of auxiliary fuel supplied, and when the amount of supplied auxiliary fuel decreases, the control system uses the control system to increase the amount of auxiliary fuel supplied. The rotation speed of the rotary valve is decreased to reduce the amount of waste supplied, and when the amount of auxiliary fuel supplied increases, the rotation speed of the waste supply rotary valve is increased to increase the amount of waste supplied. A combustion control device for a radioactive waste incinerator, characterized by comprising a control system based on fuel supply amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193085A JPS61231321A (en) | 1985-04-04 | 1985-04-04 | Combustion control unit of radioactive waste incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193085A JPS61231321A (en) | 1985-04-04 | 1985-04-04 | Combustion control unit of radioactive waste incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61231321A JPS61231321A (en) | 1986-10-15 |
| JPH0217776B2 true JPH0217776B2 (en) | 1990-04-23 |
Family
ID=13474726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7193085A Granted JPS61231321A (en) | 1985-04-04 | 1985-04-04 | Combustion control unit of radioactive waste incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61231321A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02192507A (en) * | 1989-01-18 | 1990-07-30 | Mitsubishi Heavy Ind Ltd | Control method for powdery waste melting furnace |
| US6499412B2 (en) * | 2000-09-15 | 2002-12-31 | Rohm And Haas Company | Method of firebox temperature control for achieving carbon monoxide emission compliance in industrial furnaces with minimal energy consumption |
| JP2014152973A (en) * | 2013-02-07 | 2014-08-25 | Ube Machinery Corporation Ltd | Mobile incineration facility |
-
1985
- 1985-04-04 JP JP7193085A patent/JPS61231321A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61231321A (en) | 1986-10-15 |
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