JPS645213B2 - - Google Patents
Info
- Publication number
- JPS645213B2 JPS645213B2 JP56142963A JP14296381A JPS645213B2 JP S645213 B2 JPS645213 B2 JP S645213B2 JP 56142963 A JP56142963 A JP 56142963A JP 14296381 A JP14296381 A JP 14296381A JP S645213 B2 JPS645213 B2 JP S645213B2
- Authority
- JP
- Japan
- Prior art keywords
- detector
- combustion chamber
- combustion
- incinerator
- signal
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 103
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 238000011084 recovery Methods 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000010849 combustible waste Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/02—Measuring filling height in burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/02—Air or combustion gas valves or dampers
- F23N2235/06—Air or combustion gas valves or dampers at the air intake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/10—High or low fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/20—Controlling one or more bypass conduits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Incineration Of Waste (AREA)
Description
【発明の詳細な説明】
本発明は、可燃物の焼却処理及びその燃焼熱の
効果的利用のためのボイラ付焼却炉装置に関し、
焼却処理にあたり、焼却物の発熱量の同一又は異
なる混合物を、その混合比の変動に影響されるこ
となく、通常の燃料と同様の運転管理ができ、燃
焼効果を良好な状態に保持しながら焼却処理する
と共に排熱回収を目的とする排熱回収ボイラ付焼
却炉のための制御システムに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an incinerator device with a boiler for incinerating combustible materials and effectively utilizing the combustion heat.
During incineration, mixtures of incinerated materials with the same or different calorific values can be operated in the same way as normal fuels without being affected by fluctuations in the mixing ratio, and can be incinerated while maintaining good combustion effects. The present invention relates to a control system for an incinerator equipped with an exhaust heat recovery boiler for processing and recovering exhaust heat.
従来、焼却炉は１次燃焼室での温度変動及び燃
焼ガス中の酸素濃度の変動、更にボイラ負荷変動
に関係なしに、焼却処理を行なつていたのが現状
である。更に２次燃焼室で助燃バーナー等を設置
して、不完全燃焼ガスの燃焼を促進して、完全燃
焼を図つていた。２次燃焼室は、不完全燃焼ガス
による臭気及び煤の発生を防止するため、適正な
過剰空気の補給混合及び燃焼に必要な温度と滞留
時間の保持できる構造でなければならないが、従
来の構造の多くは、これらの燃焼反応に充分な炉
内滞留時間をとれず、温度保持のための助燃バー
ナーを設置しなければならなかつた。 Conventionally, incinerators have performed incineration regardless of temperature fluctuations in the primary combustion chamber, fluctuations in oxygen concentration in the combustion gas, and boiler load fluctuations. Additionally, an auxiliary burner was installed in the secondary combustion chamber to promote combustion of incompletely combusted gas and achieve complete combustion. The secondary combustion chamber must have a structure that can maintain the temperature and residence time necessary for proper supplementary mixing of excess air and combustion in order to prevent the generation of odor and soot due to incompletely combusted gases. In many cases, these combustion reactions did not have sufficient residence time in the furnace, and auxiliary burners had to be installed to maintain temperature.
本発明はこのような従来の排熱回収ボイラ付焼
却炉の欠点を改良した新規なる発明であり、投入
口の開閉、１次燃焼室の温度、ボイラ内蒸気圧力
又は温水温度信号により１次燃焼用押込風量の制
御を行ない、又、排ガス中の酸素濃度信号により
２次燃焼用押込風量の制御を行なうもので、更に
押込風量制御に伴ない該押込風量に対する、任意
設定比率の誘引風量を制御することにより、上記
諸問題の解決を図るようにしたもので、投入口開
閉リミツトスイツチ、炉内温度測定装置、ボイラ
内蒸気圧力又は温水温度発信器、１次空気自動制
御器、酸素濃度検出器、２次空気自動制御器、押
込風量差圧検出器、押込誘引風量平衡制御器及び
自動ダンバーにて構成される焼却炉の自動運転制
御システムである。 The present invention is a new invention that improves the drawbacks of the conventional incinerator equipped with an exhaust heat recovery boiler. It also controls the forced air volume for secondary combustion based on the oxygen concentration signal in the exhaust gas, and further controls the induced air volume at an arbitrarily set ratio to the forced air volume in conjunction with the forced air volume control. By doing so, the above-mentioned problems are solved, and the inlet opening/closing limit switch, furnace temperature measurement device, boiler steam pressure or hot water temperature transmitter, primary air automatic controller, oxygen concentration detector, This is an automatic operation control system for an incinerator consisting of an automatic secondary air controller, a forced air volume differential pressure detector, a forced induced air volume balance controller, and an automatic damper.
本発明を図面に従つて説明すれば、第１図、焼
却炉を仕切壁にて区画し、１次燃焼室１と２次燃
焼室２とを前後に配列し、その上部に熱回収ボイ
ラ３を備えた排熱回収ボイラ付燃却炉において、
燃焼用空気を供給する押込フアン５及び燃焼ガス
を排気する誘引フアン６と、ボイラ３下部スペー
スにバツフル及びアーチにより構成した不完全燃
焼ガスの燃焼のための２次燃焼室２を設け、焼却
炉運転制御として燃焼排ガス中の酸素濃度、ボイ
ラ内蒸気圧又は温水温度、炉内温度及び投入口７
開閉動作に応じて１次、２次燃焼用押込風量及び
該押込風量に対する任意設定比率に応じた誘引風
量に自動管理することを特徴とする排熱回収ボイ
ラ付焼却炉の運転制御システムである。 To explain the present invention according to the drawings, FIG. 1 shows an incinerator divided by a partition wall, a primary combustion chamber 1 and a secondary combustion chamber 2 arranged in front and behind, and a heat recovery boiler 3 above the incinerator. In a combustion furnace equipped with an exhaust heat recovery boiler,
The incinerator is equipped with a push-in fan 5 for supplying combustion air, an induction fan 6 for exhausting combustion gas, and a secondary combustion chamber 2 for combustion of incompletely combusted gas, which is configured by a buttful and an arch in the space below the boiler 3. Operation control includes oxygen concentration in combustion exhaust gas, steam pressure or hot water temperature in the boiler, temperature in the furnace, and input port 7.
This is an operation control system for an incinerator with an exhaust heat recovery boiler, which automatically manages the forced air volume for primary and secondary combustion according to opening/closing operations, and the induced air volume according to an arbitrarily set ratio to the forced air volume.
本発明は、第１図焼却炉の１次燃焼室１内で燃
却されて発生する不完全燃焼ガスは、二次燃焼室
２に導入して、該不完全燃焼ガスを更に燃焼用空
気の押込フアン５により送り込みにより燃焼室２
内を通過する間に、完全燃焼させるものである。 In the present invention, the incomplete combustion gas generated by combustion in the primary combustion chamber 1 of the incinerator shown in FIG. The combustion chamber 2 is fed by the pushing fan 5.
It burns completely while passing through the interior.
１次燃焼室１の燃焼温度は、焼却物の燃焼程度
及び発熱量によつて種々異なるが、前記燃焼室１
内の温度及び排ガス中の酸素濃度の検出により、
概略的にその燃焼状態を知ることができる。従つ
て１次燃焼室１内の温度が低い場合は、徐々に押
込フアン５からの風量を制御するダンパーによつ
て、送気量を増し、燃焼を促進させ、高温の燃焼
ガスを発生させる。このようにして１次燃焼室１
内の可燃物を燃焼させて発生する燃焼ガス中の不
完全燃焼ガスは、２次燃焼室２内に入り、燃焼排
ガス中の酸素濃度を検出し、二次燃焼に必要な空
気を押込フアン５から送り込み、バツフル及びア
ーチにより構成する２次燃焼室２内を通過する間
に、送り込み空気によつて不完全燃焼ガスは、完
全燃焼する。 The combustion temperature of the primary combustion chamber 1 varies depending on the degree of combustion of the incinerated material and the calorific value.
By detecting the internal temperature and oxygen concentration in the exhaust gas,
You can roughly know the combustion state. Therefore, when the temperature in the primary combustion chamber 1 is low, the amount of air supplied is increased by the damper that gradually controls the amount of air from the forced fan 5, promoting combustion and generating high-temperature combustion gas. In this way, the primary combustion chamber 1
The incomplete combustion gas in the combustion gas generated by burning the combustible materials in the combustion chamber enters the secondary combustion chamber 2, the oxygen concentration in the combustion exhaust gas is detected, and the air necessary for secondary combustion is forced into the secondary combustion chamber 2. The incompletely combusted gas is completely combusted by the fed air while passing through the secondary combustion chamber 2 constituted by a baffle and an arch.
第２図、本発明焼却炉制御システムにおける制
御系統図に説明するように、２次燃焼室の上部に
設置するボイラ３は、高温燃焼ガスにより加熱さ
れて、蒸気又は温水が得られるが、蒸気圧力又は
温水温度検出器Ｖを設置して、設定蒸気圧又は温
度に達すると、１次燃焼室１での押込燃焼用空気
が押込フアン５のダンパー５ａにより、減少方向
に自動制御され、燃焼状態が抑制されて無駄のな
い安定した燃焼を保持する。然し乍ら、この場合
１次燃焼室１内で発生する不完全燃焼ガスは、黒
煙発生の原因となるので完全燃焼させる必要があ
るために、２次燃焼室２の上部煙室部に酸素濃度
検出器Ｄを備えて酸素濃度を検出しながら２次燃
焼室２に対する燃焼用空気の送り込みを制御す
る。更に、可燃物投入の際、投入口７の開放に伴
ない１次燃焼ガスの投入口７よりの逆流噴出防止
のため、開閉動作をリミツトスイツチＬが検知
し、開放動作において押込フアン５の１次空気ダ
ンパー５ａが閉鎖して１次燃焼室１への空気の送
り込みを停止し、又１次燃焼室１が負圧となるよ
う、誘引フアン６のダンパー６ａが全開となるよ
うにしてある。 As explained in Fig. 2, a control system diagram of the incinerator control system of the present invention, the boiler 3 installed in the upper part of the secondary combustion chamber is heated by high-temperature combustion gas and produces steam or hot water. A pressure or hot water temperature detector V is installed, and when the set steam pressure or temperature is reached, the forced combustion air in the primary combustion chamber 1 is automatically controlled in a decreasing direction by the damper 5a of the forced fan 5, and the combustion state is is suppressed to maintain efficient and stable combustion. However, in this case, the incompletely combusted gas generated in the primary combustion chamber 1 causes black smoke and must be completely combusted, so the oxygen concentration is detected in the upper smoke chamber of the secondary combustion chamber 2. A device D is provided to control the supply of combustion air to the secondary combustion chamber 2 while detecting the oxygen concentration. Furthermore, when charging combustible materials, the limit switch L detects the opening/closing operation to prevent backflow of primary combustion gas from the input port 7 when the input port 7 is opened, and the primary combustion gas of the push fan 5 is The air damper 5a closes to stop feeding air into the primary combustion chamber 1, and the damper 6a of the induction fan 6 is fully opened so that the primary combustion chamber 1 has a negative pressure.
第１図に示すように、１次燃焼室１内の燃焼用
ロストル部は、熱的な損傷を防止するためボイラ
３に連管する鋼管製の水冷管４とすることによ
り、ボイラ伝熱面の一部として効率的な熱回収手
段とすることができる。 As shown in Fig. 1, the combustion roost in the primary combustion chamber 1 is constructed with a water-cooled steel pipe 4 connected to the boiler 3 in order to prevent thermal damage. It can be used as an efficient heat recovery means as part of the
本発明焼却炉の制御システムを第２図制御系統
図に従つて、詳細に説明すれば、投入口７に備え
る開閉リミツトスイツチＬ、１次燃焼室１に備え
る炉内温度検出器T1、２次燃焼室２に備える炉
内温度検出器T2、ボイラ３に備える蒸気圧又は
温水温度検出器Ｖ、２次燃焼室２より連続するボ
イラ３の煙室部３ａに備える酸素濃度検出器Ｄ、
及び押込フアン５の送風管１２の空気吸込口部に
備えた押込風量差圧検出器Ｃの検出系と、投入口
開閉リミツトスイツチＬ、炉内温度検出器T1、
蒸気圧又は温水温度検出器Ｖの信号により１次空
気押込ダンパー５ａの作動モーターM1に開閉量
の指令信号を出す１次燃焼制御器９、酸素濃度検
出器Ｄの信号により２次空気押込ダンパー５ｂの
作動モーターM2に開閉量の指令信号を出す２次
燃焼制御器１０、投入口開閉リミツトスイツチ
Ｌ、押込風量差圧検出器Ｃの信号により全開また
は押込風量と誘引風量の任意設定比率の誘引とな
るよう誘引フアン６のダンパー６ａの作動モータ
ーM3に開閉量の指令信号を出す平衡制御器８の
制御系と、送風管１２の１次送風管１２ａと２次
送風管１２ｂに備える押込ダンパー５ａ、５ｂ及
び排気管１３に備える誘引ダンパー６ａの作動系
及び温度検出器T1，T2、燃焼排ガス温度検出器
T3、排気温度検出器T4、送風温度検出器T5及び
酸素濃度検出器Ｄの検出値を指示記録する表示記
録器１１を本発明焼却炉は備えている。１４は軸
流サイクロン、１５は熱交換器、１６は煙突であ
る。 The control system of the incinerator of the present invention will be explained in detail according to the control system diagram in FIG . Furnace temperature detector T 2 provided in the combustion chamber 2, steam pressure or hot water temperature sensor V provided in the boiler 3, oxygen concentration detector D provided in the smoke chamber 3a of the boiler 3 that is continuous from the secondary combustion chamber 2,
and the detection system of the forced air volume differential pressure detector C provided at the air suction port of the air pipe 12 of the forced fan 5, the inlet opening/closing limit switch L, the furnace temperature detector T 1 ,
The primary combustion controller 9 sends a command signal for the amount of opening/closing to the operation motor M1 of the primary air push damper 5a based on the signal from the steam pressure or hot water temperature detector V, and the secondary air push damper is activated based on the signal from the oxygen concentration detector D. The secondary combustion controller 10 sends a command signal for opening/closing amount to the operation motor M2 of 5b, the inlet opening/closing limit switch L, and the forced air volume differential pressure detector C signal to fully open or induce an arbitrarily set ratio of forced air volume and induced air volume. A control system of the balance controller 8 that sends a command signal for opening/closing amount to the operation motor M3 of the damper 6a of the induction fan 6 so that 5a, 5b and the operation system of the induced damper 6a provided in the exhaust pipe 13, temperature detectors T1 , T2 , and combustion exhaust gas temperature detector
The incinerator of the present invention is equipped with a display/recorder 11 for indicating and recording the detected values of T 3 , exhaust temperature detector T 4 , blast temperature detector T 5 and oxygen concentration detector D. 14 is an axial flow cyclone, 15 is a heat exchanger, and 16 is a chimney.
第２図制御系統図に従つて制御動作を説明すれ
ば、油圧等で作動する投入口７より１次燃焼室１
の水冷管４ロストル上部に可燃物を投入し、着火
した後投入口を閉鎖する。押込フアン５及び誘引
フアン６を始動し、燃焼状態が正常となるまで
は、手動にて１次、２次押込空気の送り込みを行
なうが、１次燃焼室の温度が設定値に近づく時点
で自動運転システムに切り替えると、１次燃焼室
１の温度が設定値になるまで１次燃焼制御器９に
よりダンパー５ａが調整され１次燃焼用空気が送
り込まれて、燃焼が進み高温燃焼状態に達する。 To explain the control operation according to the control system diagram in Fig. 2, the primary combustion chamber 1 is
Put the combustible material into the upper part of the water-cooled pipe 4 and close the inlet after it ignites. The forced fan 5 and the induction fan 6 are started, and the primary and secondary forced air is manually fed until the combustion condition becomes normal, but when the temperature of the primary combustion chamber approaches the set value, the air is automatically fed in. When the operating system is switched to, the damper 5a is adjusted by the primary combustion controller 9 until the temperature of the primary combustion chamber 1 reaches the set value, and primary combustion air is fed in, and combustion progresses to reach a high-temperature combustion state.
１次燃焼室１の温度が一設定値になると、検出
器T1からの信号により、制御器９が１次ダンパ
ー５ａを閉じる方向に制御して１次側押込空気量
を抑制する。 When the temperature of the primary combustion chamber 1 reaches a set value, the controller 9 controls the primary damper 5a in a direction to close it in response to a signal from the detector T1 , thereby suppressing the amount of air forced into the primary side.
酸素濃度検出器Ｄは、２次燃焼室２内の燃焼ガ
ス中の酸素濃度を検出し、２次燃焼制御器１０を
介して２次側の押込空気量を適正な過剰空気率と
なるようダンパー５ｂにより制御を行なう。又、
押込風量差圧検出器Ｃにより上記押込風量制御に
おける風量変動を検出し、あらかじめ制御値を設
定した平衡制御器８により、ある一定比率の押込
風量及誘引風量となるよう、誘引ダンパー６ａを
制御しながら燃焼を続行する。 The oxygen concentration detector D detects the oxygen concentration in the combustion gas in the secondary combustion chamber 2, and controls the amount of forced air on the secondary side via the secondary combustion controller 10 to adjust the amount of forced air to an appropriate excess air rate using a damper. Control is performed by 5b. or,
The forced air volume differential pressure detector C detects the air volume fluctuation in the forced air volume control, and the balance controller 8, in which a control value is set in advance, controls the induced damper 6a so that the forced air volume and induced air volume are at a certain constant ratio. combustion continues.
ボイラ３により燃焼熱は回収されるが、蒸気圧
力又は温水温度検出器Ｖにより設定圧力または温
度上限値が検出されると、検出信号は１次燃焼制
御器９に入り、１次側の押込ダンパー５ａを閉鎖
方向に動作させて１次燃焼用押込空気を減少させ
燃焼を抑制する。この間、１次燃焼室１内の温度
が、ボイラ蒸気圧又は温水温度とともに低下する
場合において、１次燃焼用空気の押込量を増加し
ても低下傾向を示す場合は、可燃物が不足してい
るため、投入口７を開けて可燃物を追加投入する
ために、指示記録計１１により検出器T1，T2の
表示値、検出器Ｖの表示値を確認できるようにし
てある。 Combustion heat is recovered by the boiler 3, but when the set pressure or temperature upper limit is detected by the steam pressure or hot water temperature detector V, the detection signal is sent to the primary combustion controller 9 and sent to the primary side push-in damper. 5a in the closing direction to reduce forced air for primary combustion and suppress combustion. During this time, if the temperature in the primary combustion chamber 1 decreases with the boiler steam pressure or hot water temperature, and if it shows a decreasing trend even if the amount of primary combustion air forced in is increased, there is a lack of combustibles. Therefore, in order to open the input port 7 and add additional combustible materials, the display values of the detectors T 1 and T 2 and the display value of the detector V can be checked using the indicator recorder 11.
本発明によれば、適正な過剰空気の補給制御シ
ステム及び燃焼に必要な温度と時間を保持できる
焼却炉構造を備えているため、従来のように、焼
却炉内に発生する臭気及び煤煙の発生を防止する
ための燃焼に充分な燃焼ガスの炉内滞留時間がと
れないため、助燃バーナーを設置するなどの温度
保持の処置が必要であつたが、上記のように過剰
空気の制御により炉内温度の低下を防止すること
ができ、従来のような助燃バーナーを必要とせず
に完全燃焼を可能とするものである。また、従来
の焼却炉の一次空気の供給調整は、焼却物の投入
時、及び燃焼の経過にともない、手動にて行なつ
ていたが、本発明システムによれば、投入作業時
の逆火現象防止、焼却物の燃焼状態の急激な変化
にともなう焼却炉負荷の変動の緩和及び適正なる
制御、排熱回収ボイラの負荷変動を緩和するため
の燃焼量の調整が可能であり、投入口の開閉、１
次燃焼室の温度、ボイラ蒸気圧力あるいはボイラ
缶水温度信号により１次空気量の制御を行ない調
整における上記諸問題の解決を図ることができ、
即ち投入口開閉リミツトスイツチ、炉内温度測定
装置、１次空気を自動調節する制御器、ボイラ圧
力又は温度発信器、及び自動ダンパーを組み込む
ことによつて構成される自動制御システムによ
り、自動的に焼却炉及びボイラに対する加熱制御
をすることができる。更に、１次燃焼室より発生
する不完全燃焼ガスの完全燃焼化のために、従来
は燃焼用空気を送り込むが、過剰な空気の送り込
みにより、燃焼室の温度を不必要に低下させ、熱
回収効率を減少させていたが、本発明は、燃焼状
態の変動に対応して適正な炉内空気率を保持する
ことができる制御システムであり、また焼却炉ロ
ストル部は、水冷管ロストルを使用しているた
め、局部過熱等の過酷な条件、更に梱包物の投
入、その他の衝撃の加わる条件下においても充分
な耐性を発揮することができる構造であるととも
に、酸素濃度検出器、過剰空気自動調節器及び自
動ダンパーによつて、燃焼室の温度を保持しなが
ら、完全燃焼を促進することが可能となる。更に
押込フアン、誘引フアンにより、燃焼室内の温
度、燃焼空気の変動があつても、従来よりも比較
的安定な燃焼状態を保持することができ、押込風
量制御については、安全を期すため、押込風量と
誘引風量を平衡状態になるように押込空気差圧検
出器、平衡調節器及び風量制御自動ダンパーによ
り安定な風量を保持するシステムとしてあるな
ど、焼却物の燃焼室内における熱回収のための燃
焼効率及び焼却操作の能率を向上させることがで
き、工場内で発生する可燃性廃棄物の能率的な焼
却、及び蒸気圧あるいは温水としての効率的な回
収利用に、顕著なる効果を発揮するものである。 According to the present invention, since the incinerator structure is equipped with an appropriate excess air replenishment control system and an incinerator structure that can maintain the temperature and time required for combustion, the generation of odor and soot generated in the incinerator is avoided. In order to prevent combustion, the residence time of the combustion gas in the furnace was not sufficient, so it was necessary to take measures to maintain the temperature, such as installing an auxiliary combustion burner. It is possible to prevent a drop in temperature and enable complete combustion without the need for a conventional auxiliary burner. In addition, in the conventional incinerator, the supply of primary air was adjusted manually when the material to be incinerated was loaded and as the combustion process progressed, but with the system of the present invention, backfire phenomenon occurs during the loading operation. prevention, mitigation and appropriate control of fluctuations in the incinerator load due to rapid changes in the combustion state of incinerated materials, adjustment of the combustion amount to alleviate load fluctuations of the exhaust heat recovery boiler, and opening and closing of the inlet. ,1
The above-mentioned problems in adjustment can be solved by controlling the primary air amount based on the temperature of the secondary combustion chamber, the boiler steam pressure, or the boiler can water temperature signal,
That is, an automatic control system that incorporates an inlet opening/closing limit switch, a furnace temperature measuring device, a controller that automatically adjusts the primary air, a boiler pressure or temperature transmitter, and an automatic damper automatically incinerates. Heating control for furnaces and boilers can be performed. Furthermore, conventionally, combustion air is sent in to completely burn the incompletely combusted gas generated in the primary combustion chamber, but by feeding in excess air, the temperature of the combustion chamber is unnecessarily lowered and heat recovery is required. However, the present invention is a control system that can maintain an appropriate air ratio in the furnace in response to fluctuations in combustion conditions. The structure is able to withstand severe conditions such as local overheating, loading of packages, and other shock conditions, as well as an oxygen concentration detector and automatic excess air adjustment. The combustion chamber and automatic damper make it possible to maintain the temperature of the combustion chamber while promoting complete combustion. Furthermore, by using a forced fan and an induced fan, it is possible to maintain a relatively stable combustion state than before even if there are fluctuations in the temperature inside the combustion chamber or the combustion air. Combustion for heat recovery in the combustion chamber of incinerated materials, such as a system that maintains a stable air volume using forced air differential pressure detectors, balance controllers, and automatic air volume control dampers so that the air volume and induced air volume are in equilibrium. It can improve the efficiency and efficiency of incineration operations, and has a remarkable effect on the efficient incineration of combustible waste generated in factories and the efficient recovery and use of steam pressure or hot water. be.
第１図は本発明焼却炉構造を概略説明する側面
図、第２図は本発明焼却炉の制御系統図である。
FIG. 1 is a side view schematically illustrating the structure of the incinerator of the present invention, and FIG. 2 is a control system diagram of the incinerator of the present invention.
Claims (1)
次燃焼室とを前後に配列し、２次燃焼室上部に連
続して設けた煙室部に熱回収ボイラを備えた排熱
回収ボイラ付焼却炉において、１次燃焼室１のロ
ストル部を介して設ける上部と下部の燃焼室内に
燃焼空気を押込むダンパー等のそれぞれ押込風量
調整器５ａ，５ｂと押込フアン５、煙室部３ａ後
段に、ダンパー等の誘引風量調整器６ａと誘引フ
アン６を備え、１次燃焼室１の焼却炉投入口７に
備える開閉スイツチＬ、１次燃焼室１に備える炉
内温度検出器T1、２次燃焼室２に備える炉内温
度検出器T2、ボイラ３に備える蒸気圧又は温度
を検出する検出器Ｖ、及び２次燃焼室又はその後
段に連続する煙室部３ａに備える酸素濃度検出器
Ｄ、及び押込フアン５側からの押込風量を検出す
る差圧検出器Ｃとからなる検出系を設け、前記開
閉スイツチＬの開信号時は、前記調整器５ａを全
閉、調整器６ａを全開に制御し、スイツチＬの閉
信号時のみ差圧検出器Ｃの信号に基き押込風量対
誘引風量が任意設定比率になるように調整器６ａ
の開閉量を調整する指令信号を出す平衡制御器８
と、同じくスイツチＬの閉信号時のみ検出器T1
又はT2と検出器Ｖの信号に基き調整器５ａの開
閉量を調整する指令信号を出す１次燃焼制御器９
と、スイツチＬの開閉に関係なく検出器Ｄの信号
に基き調整器５ｂの開閉量を調整する指令信号を
出す２次燃焼制御器１０とからなる制御系を設け
たことを特徴とする排熱回収ボイラ付焼却炉の運
転制御システム。1 The incinerator is divided by a partition wall into a primary combustion chamber and a 2nd combustion chamber.
In an incinerator with an exhaust heat recovery boiler, in which secondary combustion chambers are arranged one after the other and a heat recovery boiler is provided in the smoke chamber section provided continuously above the secondary combustion chamber, Push-in air volume regulators 5a, 5b and push-in fans 5, such as dampers, which push combustion air into the upper and lower combustion chambers provided in the upper and lower combustion chambers, and an induced air volume regulator 6a, such as a damper, and an induced fan 6, are installed after the smoke chamber 3a. An on-off switch L provided in the incinerator inlet 7 of the primary combustion chamber 1, an in-furnace temperature detector T 1 provided in the primary combustion chamber 1, an in-furnace temperature detector T 2 provided in the secondary combustion chamber 2, a boiler 3, a detector V for detecting vapor pressure or temperature, an oxygen concentration detector D for the secondary combustion chamber or the smoke chamber 3a continuous to the subsequent stage, and a differential for detecting the amount of forced air from the side of the pushing fan 5. A detection system consisting of a pressure detector C is provided, and when the open/close switch L has an open signal, the regulator 5a is fully closed and the regulator 6a is fully open. Only when the switch L has a close signal, the differential pressure detector Adjuster 6a adjusts the forced air volume to induced air volume to an arbitrarily set ratio based on the signal of
Balance controller 8 that outputs a command signal to adjust the opening/closing amount of
Similarly, the detector T 1 is activated only when the switch L is closed.
Or a primary combustion controller 9 that outputs a command signal to adjust the opening/closing amount of the regulator 5a based on the signal of T 2 and the detector V.
and a secondary combustion controller 10 that issues a command signal to adjust the opening/closing amount of the regulator 5b based on the signal of the detector D regardless of whether the switch L is opened or closed. Operation control system for incinerator with recovery boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56142963A JPS5843323A (en) | 1981-09-10 | 1981-09-10 | Control system of incinerator provided with waste heat recovering boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56142963A JPS5843323A (en) | 1981-09-10 | 1981-09-10 | Control system of incinerator provided with waste heat recovering boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5843323A JPS5843323A (en) | 1983-03-14 |
| JPS645213B2 true JPS645213B2 (en) | 1989-01-30 |
Family
ID=15327727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56142963A Granted JPS5843323A (en) | 1981-09-10 | 1981-09-10 | Control system of incinerator provided with waste heat recovering boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843323A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543173A (en) * | 2017-09-04 | 2018-01-05 | 重庆富燃科技股份有限公司 | A kind of method and system for the waste incineration intelligent control for reducing dioxin emission |
-
1981
- 1981-09-10 JP JP56142963A patent/JPS5843323A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5843323A (en) | 1983-03-14 |
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