JPH03148512A - Method and apparatus for controlling combustion in fluidized bed furnace - Google Patents
Method and apparatus for controlling combustion in fluidized bed furnaceInfo
- Publication number
- JPH03148512A JPH03148512A JP28810089A JP28810089A JPH03148512A JP H03148512 A JPH03148512 A JP H03148512A JP 28810089 A JP28810089 A JP 28810089A JP 28810089 A JP28810089 A JP 28810089A JP H03148512 A JPH03148512 A JP H03148512A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- fluidized bed
- furnace
- bed furnace
- secondary air
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000270722 Crocodylidae Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、流動床炉において、炉内で処理物を完全燃焼
させ、０寞不足による不完全燃焼を防止するための燃焼
安定制御方法及び装置に関するもので、特に処理物の組
成、性状の変動が激しい廃棄物等の燃焼システムに利用
するのに適している。Detailed Description of the Invention [Industrial Field of Application] The present invention provides a combustion stability control method and method for completely burning a processed material in a fluidized bed furnace and preventing incomplete combustion due to insufficient zero temperature. It relates to equipment, and is particularly suitable for use in combustion systems for waste, etc., where the composition and properties of the processed materials vary widely.
従来の流動床炉における燃焼制御方式は、炉出口での排
ガス温度又は０ｗ１１度を測定し、この測定値により燃
焼用二次空気量を制御する方式であり、出力値をａｍす
るまでのタイムラグが大きいため、完全燃焼＠ｍを効果
的に行えない欠点を有している。The combustion control method in conventional fluidized bed furnaces measures the exhaust gas temperature or 0W11 degrees at the furnace outlet and controls the amount of secondary air for combustion based on this measured value, which reduces the time lag until the output value changes to am. Since it is large, it has the disadvantage that complete combustion cannot be carried out effectively.
また従来、特開昭６０−１９４２１９号公報、特開平１
−６７５２３号公報、特開平１−１１１１２４号公報に
は、ストー−力におけるごみの燃え切り点を画像処理に
より安定制御する方法が開示されている。Also, conventionally, JP-A-60-194219, JP-A-1
No. 67523 and Japanese Unexamined Patent Application Publication No. 1-111124 disclose a method of stably controlling the burnout point of garbage in a stoving force by image processing.
また、特開昭６１−３６６１２号公報には、画像情報に
よりストーカ上の高温燃焼域を検知する燃焼制御方法が
開示されている。Furthermore, Japanese Patent Laid-Open No. 61-36612 discloses a combustion control method that detects a high temperature combustion area on a stoker using image information.
さらに、特開昭５９−５２１０５号公報には、流動層か
らの赤外線を受光し、流動層の温度分布を検知する運転
方法が開示されている。Further, JP-A-59-52105 discloses an operating method in which infrared rays from a fluidized bed are received to detect the temperature distribution of the fluidized bed.
前述のように、従来の流動床炉における燃焼制御方式に
おいては、廃棄物の燃焼後の排ガス温度又は０．濃度を
炉出口以降で計測しており、しかも計測器における応答
時間が数分かかるため、二次空気量をコントロールする
までのタイムラグが合計４〜７分にもなる。しかしなが
ら、流動床は廃棄物が炉内で瞬時燃焼をするため、４〜
７分後の＃御では全（効果がな（、瞬時に過負荷になっ
た場合、０．不足による不安全燃焼（黒煙発生）をす名
という不都合点がある。As mentioned above, in the conventional combustion control method in a fluidized bed furnace, the exhaust gas temperature after combustion of waste or 0. Since the concentration is measured after the furnace exit and the response time of the measuring instrument is several minutes, the time lag until the amount of secondary air is controlled is 4 to 7 minutes in total. However, in the fluidized bed, the waste undergoes instantaneous combustion in the furnace, so
If the engine is overloaded instantly after 7 minutes, there is a disadvantage that unsafe combustion (black smoke generation) may occur due to the lack of 0.
本発明は上記の点を解決するためになされたもので、燃
焼瞬時の輝度（一定以上の輝度）を感知し、二次空気量
を短時間に＠御することにより、不完全燃焼を防止する
方法を提供することを目的とするものである。The present invention was made to solve the above problems, and detects the instantaneous brightness of combustion (brightness above a certain level) and controls the amount of secondary air in a short time to prevent incomplete combustion. The purpose is to provide a method.
前記の特開昭６０−１９４２１９号公報、特開平１−６
７５２３号公報、特開平１−１１１１２４号公報記載の
方法は、いず籠も同一輝度になるように、ストーカ上の
ごみ燃焼位置を制御するものであり、ｒｍ度により二次
空気量を自動制御する」という技術的思想は何ら記載も
示唆もされていない。The above-mentioned JP-A-60-194219, JP-A-1-6
The method described in JP-A No. 7523 and JP-A-1-111124 controls the garbage combustion position on the stoker so that all the baskets have the same brightness, and automatically controls the amount of secondary air based on the rm degree. There is no mention or suggestion of the technical concept of "doing so."
また、前記の特開昭６１−３６６１２号公報記載の方法
は、異常高温領域の面積が予め定めた値以上を有する領
域の風箱に供給される燃焼用空気の温度を、面積に応じ
て低下させるものであり、特開昭５９−５２１０５号公
報記載の方法は、流動層内の温度分布を単に知るための
方法に関するものであり、いずれの公報にも、「輝度に
より二次空気量を自動制御するＪという技術的思想は何
ら記載も示唆もされていない。Furthermore, the method described in JP-A No. 61-36612 reduces the temperature of the combustion air supplied to the wind box in an area where the area of the abnormally high temperature area is greater than or equal to a predetermined value in accordance with the area. The method described in JP-A-59-52105 is a method for simply knowing the temperature distribution in a fluidized bed, and both publications include ``Automatically determining the amount of secondary air based on brightness.'' The technical idea of controlling J is not described or suggested at all.
〔課題を解決するための手段および作用〕上記の目的を
達成するために、本発明の流動床炉の燃焼制御方式は、
流動床炉で処理物を燃焼させるに際し、炉内火炎の輝度
を検知し、この輝度により燃焼用二次空気量を自動制御
するこ−とを特徴とするものである。[Means and effects for solving the problem] In order to achieve the above object, the combustion control method for a fluidized bed furnace of the present invention has the following features:
When burning the processed material in a fluidized bed furnace, the brightness of the flame in the furnace is detected, and the amount of secondary air for combustion is automatically controlled based on this brightness.
また、本発明の流動床炉の燃焼制御装置は、第１図及び
第２図に示すように、風箱２に一次空気供給管５を、フ
リーボード４に燃焼用二次空気供給管６を接続した流動
床炉１において、流動床炉１の側部又は上部に炉内火炎
の輝度を検知するためのテレビカメラ１１を設け、この
テレビカメラ１１に画像処理装置ｆ１２を接続し、この
画像処理装置１２と燃焼用二次空気供給管に設けられた
空気量調節装置Ｅ１３とを接続したことを特徴とするも
のである。Further, the combustion control device for a fluidized bed furnace of the present invention has a primary air supply pipe 5 in the wind box 2 and a secondary air supply pipe 6 for combustion in the freeboard 4, as shown in FIGS. 1 and 2. In the connected fluidized bed furnace 1, a television camera 11 for detecting the brightness of the flame in the furnace is provided on the side or top of the fluidized bed furnace 1, and an image processing device f12 is connected to this television camera 11, and this image processing The device 12 is characterized in that the air amount adjusting device E13 provided in the secondary combustion air supply pipe is connected.
また、テレビカメラと画像処理装置との代りに、第３図
及び第４図に示すように、照度計１８を設ける場合もあ
る。Further, instead of the television camera and the image processing device, an illumination meter 18 may be provided as shown in FIGS. 3 and 4.
テレビカメラ１１と画像処理装置１２とで、または照度
計１８で、燃焼瞬時の輝度を検知し、この値により二次
空気量を制御して、不完全燃焼を防止する。The television camera 11 and the image processing device 12 or the illumination meter 18 detect the brightness at the instant of combustion, and the amount of secondary air is controlled based on this value to prevent incomplete combustion.
なお、常時は、炉出口排ガス温度又は炉出口排ガス中の
０□濃度て二次空気量の自動制御を行うが、瞬時に一定
以上の輝度を感知した場合に、この輝度による上記制御
を優先的に行うことで、完全燃焼を図ることができる。Note that the secondary air volume is normally automatically controlled based on the furnace exit exhaust gas temperature or the 0□ concentration in the furnace exit exhaust gas, but if a brightness above a certain level is detected instantaneously, the above control based on this brightness is prioritized. By doing so, complete combustion can be achieved.
以下、図面を参照して本発明の好適な実施例を詳細に説
明する。ただしこの実施例に記載されている構成機器の
形状、その相対配置などは、とくに特定的な記載がない
限りは、本発明の範囲をそれらのみに限定する趣旨のも
のではなく、単なる説明例にすぎない。Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, unless there is a specific description, the shapes of the components described in this example, their relative positions, etc. are not intended to limit the scope of the present invention to these, but are merely illustrative examples. Only.
実施例１
第１図において、１は流動床炉で、風箱２、流動床３、
フリーボード４を有している。そして、風箱２には一次
空気供給管５が接続され、フリーボード４には燃焼用二
次空気供給管６が接続されている。７は空気分散板、８
は廃棄物投入口、１０は排ガス出口である。Example 1 In Fig. 1, 1 is a fluidized bed furnace, which includes a wind box 2, a fluidized bed 3,
It has a free board 4. A primary air supply pipe 5 is connected to the wind box 2, and a combustion secondary air supply pipe 6 is connected to the freeboard 4. 7 is an air distribution plate, 8
10 is a waste inlet, and 10 is an exhaust gas outlet.
流動床炉１の側部に炉内火炎の輝度を検知するための工
業用のテレビカメラ１１が設置され、このテレビカメラ
１１に画像処理装置１２が接続されている。そして、こ
の画像処理装置１２と燃焼用二次空気供給管６に設けら
れた、ダンパー、弁、インバータ等の空気Ｎ調節装置１
３とが接続されている。１４は一次送風機、１５は二次
送風機、１６は排ガスラインに接続された温度計、１７
は排ガスラインに接続された０２計である。なお通常、
排ガスラインにはガス冷却室、ついで電気集Ｉ！！機が
設けられており、温度計１６はガス冷却室の上流側に、
０１ａｔ１７はガス冷却室と電気集塵機との間に設けら
れる。An industrial television camera 11 for detecting the brightness of the flame in the furnace is installed on the side of the fluidized bed furnace 1, and an image processing device 12 is connected to this television camera 11. Then, an air N adjustment device 1 such as a damper, a valve, an inverter, etc. is provided in this image processing device 12 and the secondary combustion air supply pipe 6.
3 is connected. 14 is a primary blower, 15 is a secondary blower, 16 is a thermometer connected to the exhaust gas line, 17
is the 02 meter connected to the exhaust gas line. Note that usually
The exhaust gas line has a gas cooling chamber, and then an electric collector I! ! A thermometer 16 is installed on the upstream side of the gas cooling chamber.
01at17 is provided between the gas cooling chamber and the electrostatic precipitator.
上記のように構成された流動床炉の燃焼制御装置におい
て、・炉内火炎の輝度をテレビカメラ１１で監視し、炉
内が過負荷になって瞬時燃焼を起こし、炉内火炎の鰐皮
が一定以上になると、これを検知し、画像処理装Ｗ１２
からの信号により、空気量調節装置１３を開方向に動作
させて、二次空気量を瞬時に増加させる。なお、テレビ
カメラにより検知し、空気量調節装置を作動させるまで
の タイムラグは数秒程度で、非常に短時間に制御が
行える。In the combustion control device for the fluidized bed furnace configured as described above, the brightness of the flame in the furnace is monitored by the television camera 11, and the inside of the furnace is overloaded, causing instantaneous combustion, and the crocodile skin of the flame in the furnace is detected. When it exceeds a certain level, this is detected and the image processing device W12
The air amount adjusting device 13 is operated in the opening direction in response to a signal from the secondary air amount, thereby instantaneously increasing the amount of secondary air. The time lag between detection by a television camera and activation of the air volume control device is only a few seconds, making control possible in a very short time.
なお、常時の制御は前述のように、排ガスラインに接続
された温度計１６又は０□計１７により自動制御される
ように構成されている。Note that, as described above, the constant control is configured to be automatically controlled by the thermometer 16 or the 0□ meter 17 connected to the exhaust gas line.
実施例２
本例は、テレビカメラを流動床炉の側部に設置する代り
に、第２図に示すように、テレビカメラ１１を流動床炉
１の上部に設置したものである。Example 2 In this example, instead of installing a television camera on the side of the fluidized bed furnace, a television camera 11 is installed on the top of the fluidized bed furnace 1, as shown in FIG.
他の構成、作用は実施例１と同様である。Other configurations and operations are the same as in the first embodiment.
実施例３
本例は、テレビカメラと画像処理装置との代りに、第３
図に示すように、流動床炉１の側部に照度計１８を設け
て、炉内火炎からの照度が一定以上によると、照度計１
８からの信号により、空気量調節装置１３を開方向に動
作させて、二次空気量を瞬時に増加させるように構成し
たものである、他の構成、作用は実施例１と同様である
。Example 3 In this example, a third camera is used instead of a television camera and an image processing device.
As shown in the figure, an illumination meter 18 is provided on the side of the fluidized bed furnace 1, and when the illuminance from the flame in the furnace is above a certain level, the illumination meter 18
8, the air amount adjusting device 13 is operated in the opening direction to instantaneously increase the amount of secondary air.Other configurations and operations are the same as in the first embodiment.
実施例４
本例は、照度計を流動床炉の側部に設置する代りに、第
４図に示すように、照度計１８を流動床炉１の上部に設
置したものである。他の構成、作用は実施例３と同様で
ある。Embodiment 4 In this example, instead of installing the illumination meter on the side of the fluidized bed furnace, the illuminance meter 18 is installed at the top of the fluidized bed furnace 1, as shown in FIG. Other configurations and operations are the same as in the third embodiment.
本発明は上記のように構成されているので、つぎのよう
な効果を奏する。Since the present invention is configured as described above, it has the following effects.
（１）燃焼発生ポイントを監視し、瞬時燃焼のような不
具合現象を最短時間で検知し、二次空気量を最短時間で
制御することにより、不完全燃焼を防止することができ
る。(1) Incomplete combustion can be prevented by monitoring the combustion occurrence point, detecting malfunction phenomena such as instantaneous combustion in the shortest possible time, and controlling the amount of secondary air in the shortest possible time.
（２）流動床炉出口の排ガスを、未燃分を含まないクリ
ーンな排ガスにＩｌｆＪＩすることができる。(2) The exhaust gas at the outlet of the fluidized bed furnace can be converted into clean exhaust gas containing no unburned matter.
第１図は本発明の流動床炉の燃焼制御装置の一実施例を
示す説明図、第２図〜第４図は本発明の装置の他の実施
例を示す説明図である。
１−・・流動床炉−２・・・風箱、３・・・流動床、４
・・・フリーボード、５・・・一次空気供給管、６・・
・燃焼用二次空気供給管、７・−・空気分散板、８・・
−廃棄物投入口、１０・・・排ガス出口、１１・・−テ
レビカメラ、１２・・・画像処理装置、１３−・・空気
量調節装置、１４・・・一次送風機、１５・−・二次送
風機、１口−・・温度計、１ フー＋＋（ｈ計、１８・
・・照度計出 願 人 川崎重工業株式会社
代 理 人 弁理士 塩出 真−，−−一−ｌｌＬ：ｉ
ジｊ ＴＸ＼
き−１−ｉ′／′。
第 Ｚ図
ｒ−−−−−−−−ｌ １％ノー
第５ｍ
−ｔ″Ｘ
第４Ｉｌ
舅ム計 ；−１
二Ｙ−イ ーFIG. 1 is an explanatory diagram showing one embodiment of the combustion control device for a fluidized bed furnace of the present invention, and FIGS. 2 to 4 are explanatory diagrams showing other embodiments of the device of the present invention. 1-...Fluidized bed furnace-2...Wind box, 3...Fluidized bed, 4
...Free board, 5...Primary air supply pipe, 6...
・Secondary air supply pipe for combustion, 7... Air distribution plate, 8...
-Waste inlet, 10...Exhaust gas outlet, 11...-TV camera, 12...Image processing device, 13-...Air amount adjustment device, 14...Primary blower, 15...Secondary Blower, 1 outlet - Thermometer, 1 Fu++ (h meter, 18.
...Luminance meter Application Person: Kawasaki Heavy Industries Co., Ltd. Representative: Patent attorney Makoto Shiode-,--1-llL:i
Jij TX\ki-1-i'/'. Figure Zr---------l 1% No. 5m -t''
Claims (1)
輝度を検知し、この輝度により燃焼用二次空気量を自動
制御することを特徴とする流動床炉の燃焼制御方法。 ２ 風箱（２）に一次空気供給管（５）を、フリーボー
ド（４）に燃焼用二次空気供給管（６）を接続した流動
床炉（１）において、流動床炉（１）の側部又は上部に
炉内火炎の輝度を検知するためのテレビカメラ（１１）
を設け、このテレビカメラ（１１）に画像処理装置（１
２）を接続し、この画像処理装置（１２）と燃焼用二次
空気供給管に設けられた空気量調節装置（１３）とを接
続したことを特徴とする流動床炉の燃焼制御装置。 ３ テレビカメラと画像処理装置との代りに、照度計（
１８）を設けたことを特徴とする請求項２記載の流動床
炉の燃焼制御装置。[Claims] 1. Combustion in a fluidized bed furnace, characterized in that when burning a processed material in a fluidized bed furnace, the brightness of the flame in the furnace is detected, and the amount of secondary air for combustion is automatically controlled based on this brightness. Control method. 2 In a fluidized bed furnace (1) in which the primary air supply pipe (5) is connected to the wind box (2) and the secondary air supply pipe (6) for combustion is connected to the freeboard (4), Television camera (11) on the side or top to detect the brightness of the flame in the furnace
The television camera (11) is equipped with an image processing device (1).
2), and this image processing device (12) is connected to an air amount adjusting device (13) provided in a secondary combustion air supply pipe. 3 Instead of a television camera and image processing device, a light meter (
18). The combustion control device for a fluidized bed furnace according to claim 2, further comprising: 18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28810089A JPH0694929B2 (en) | 1989-11-06 | 1989-11-06 | Combustion control method for fluidized bed furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28810089A JPH0694929B2 (en) | 1989-11-06 | 1989-11-06 | Combustion control method for fluidized bed furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03148512A true JPH03148512A (en) | 1991-06-25 |
| JPH0694929B2 JPH0694929B2 (en) | 1994-11-24 |
Family
ID=17725793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28810089A Expired - Fee Related JPH0694929B2 (en) | 1989-11-06 | 1989-11-06 | Combustion control method for fluidized bed furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694929B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159414A (en) * | 1994-12-05 | 1996-06-21 | Babcock Hitachi Kk | Fluidized bed type incinerator and control method thereof |
-
1989
- 1989-11-06 JP JP28810089A patent/JPH0694929B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159414A (en) * | 1994-12-05 | 1996-06-21 | Babcock Hitachi Kk | Fluidized bed type incinerator and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0694929B2 (en) | 1994-11-24 |
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