JPS63129221A - Method for controlling oil burning boiler - Google Patents
Method for controlling oil burning boilerInfo
- Publication number
- JPS63129221A JPS63129221A JP27499686A JP27499686A JPS63129221A JP S63129221 A JPS63129221 A JP S63129221A JP 27499686 A JP27499686 A JP 27499686A JP 27499686 A JP27499686 A JP 27499686A JP S63129221 A JPS63129221 A JP S63129221A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- time
- boiler
- low
- low combustion
- 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
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 62
- 239000004071 soot Substances 0.000 abstract description 13
- 239000000571 coke Substances 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
木発Ｅ！４＃′ｉ油焚きボイ２の運転において、低燃焼
を優先して制御し、かつ一定の極短時間のみ高燃焼に移
行させることによって長期間高効率を維持する簡単、安
価にして効果の大なる油焚きボイラの制御方法に関する
ものである。[Detailed description of the invention] [Industrial field of application] Kihatsu E! 4#'i In the operation of oil-fired boiler 2, a simple, inexpensive, and highly effective method that maintains high efficiency for a long period of time by controlling low combustion with priority and shifting to high combustion only for a certain extremely short period of time. The present invention relates to a control method for an oil-fired boiler.
従来１ボイラの省エネルギーを目的として、予備設置に
よる台数制御運転には本発明者等による先願発明特公昭
６０−４２３６１１号がある。この先願発明はボイラを
複数個設置した系べおいて各ボイラが低燃焼を保持する
ようになし、負荷の要求があるときに限って段階的忙高
燃焼へ移行させるようＫＬ、個々のボイラをできるだけ
オン−オフ（ＯＮ−ＯＦＦ）させないようにしてボイラ
効率の高い低燃焼運転によるボイラの制御方法であるが
、とのボイラ制御方法は一罐設置の場合も同様で、手動
操作による低燃焼持続スイッチを設け、負荷の軽い場合
には高燃焼へ移行しないような方法も取られてきた。Conventionally, for the purpose of energy saving with one boiler, there is a prior invention patent application No. 60-423611 filed by the present inventors for controlling the number of boilers by preliminary installation. In this prior invention, in a system where multiple boilers are installed, each boiler maintains low combustion, and the KL and individual boilers are controlled so that the combustion is shifted to a staged busy combustion only when there is a load demand. This boiler control method uses low combustion operation with high boiler efficiency by avoiding ON-OFF operation as much as possible, but the boiler control method is the same for single-boiler installations, and low combustion can be maintained by manual operation. A method has also been taken in which a switch is installed to prevent the combustion from shifting to high combustion when the load is light.
しかしながら油焚きボイラの場合には低燃焼ではススや
コークスの発生があり、それが伝熱面に付着、沈着して
伝熱阻害を惹き起してきた。However, in the case of oil-fired boilers, soot and coke are generated at low combustion rates, which adhere to and deposit on heat transfer surfaces, causing heat transfer inhibition.
本発明者等の研究結果によると、上記低燃焼におけるス
スやコークスの伝熱面への付着や沈着は、低燃焼ではガ
ス流速が遅いため、スス−やコークスが伝熱面に付着、
沈着しやすく、低燃焼運転時間が長いほど伝熱面の掃除
の必要周期が短かくなり、しかも一旦伝熱面にススやコ
ークスの付着層が形成されてしまうとその後は高速の燃
焼ガスを流してもこの付着層は容易に吹き飛ばないこと
が判明した。According to the research results of the present inventors, the adhesion and deposition of soot and coke on the heat transfer surface during the above-mentioned low combustion is caused by the slow gas flow rate at low combustion.
It is easy to deposit, and the longer the low combustion operation time is, the shorter the period of cleaning of the heat transfer surface is required. However, it was found that this adhesion layer was not easily blown off.
一方高燃焼の場合にはガス流速によりむしろススやコー
クスが吹き飛ばされて伝熱面におけるススの付着は殆ん
ど見られなくなり、ボイラの掃除を殆んど必要としない
のである。On the other hand, in the case of high combustion, soot and coke are blown away by the gas flow velocity, so that almost no soot is observed on the heat transfer surface, and there is almost no need to clean the boiler.
近年ボイラの小型、高性能化に伴ってガス流速を高く設
計されている場合の油焚きボイラの低燃焼においては、
前記のことが顕著に現れるようＫなった。In recent years, as boilers have become smaller and more sophisticated, oil-fired boilers have been designed with high gas flow rates.
Now, the above has become more apparent.
以上のようにボイラの省エネルギー運転から、低燃焼を
優先させたいが、負荷の要求がなく連続、して低燃焼が
続いた場合短期間にススやコークスが付着して逆にボイ
ラの効率が低下する問題が起こる。As mentioned above, we want to give priority to low combustion for energy-saving operation of the boiler, but if there is no load demand and low combustion continues, soot and coke will adhere in a short period of time, and the efficiency of the boiler will decrease. A problem arises.
本発明は油焚きボイラの低燃焼運転を優先させながら、
ススやコークスの付着を低減させて、長期間ボイラの高
効率を維持させる油焚きボイラの制御方法を目的とする
ものである。The present invention prioritizes low combustion operation of oil-fired boilers while
The purpose of this invention is to provide a control method for an oil-fired boiler that reduces the adhesion of soot and coke and maintains high boiler efficiency for a long period of time.
さらＫまた他の現象上して、従来の高−低一切断（Ｈｉ
ｇｈ −Ｌｏｗ−Ｏｆ ｆ ）制御のバーナでは例え
ば２木のバーナガンがあって、低燃焼持続では１本は開
で、１木は閉のため、閉側のバーナガンの先端が過熱さ
れ、内部のバーナ内残留油がコークス化して次の開時に
Ｖｉ噴霧が悪くなり、ススの発生が激増する結果を招来
することも判明したのである。Moreover, due to other phenomena, the conventional high-low disconnection (Hi
For example, in a burner with gh -Low-Of f) control, there are two burner guns, one open for low combustion duration and one closed, so the tip of the burner gun on the closed side is overheated and the internal burner is heated. It was also discovered that the residual oil inside the reactor turned into coke, resulting in poor Vi spraying during the next opening, resulting in a drastic increase in soot production.
本発明は油焚きボイラの運転において、低燃焼の優先回
路又は持続回路を設け、低燃焼運転を連続して一定時間
持続させ、所望の一定時間ごとに、例えば５秒〜８０秒
、好適には６〜７秒程度の極短時間のみ自動的に高燃焼
に移行せしめ２油焚きボイラの制御方法を提供するもの
である。In the operation of an oil-fired boiler, the present invention provides a low-combustion priority circuit or a sustaining circuit, and continuously maintains the low-combustion operation for a certain period of time, preferably for example, from 5 seconds to 80 seconds. The present invention provides a control method for a two-oil boiler that automatically shifts to high combustion only for a very short period of about 6 to 7 seconds.
この場合本発明は連続した低燃焼の一定時間は例えば一
時間であり、高燃焼に移行させる一定の極短時間は例え
ば数秒間程度であって、油焚きボイラの低燃焼運転が連
続して一時間以上続いた場合、ススやコークスが付着し
て成長する前に付着を防止して一時間ごとに数秒間のみ
自動的に高燃焼運転に移行させることによって強制的に
ススやコークスを吹き飛ばして以後又低燃焼運転に復帰
させるように油焚きボイラの制御をするものである。In this case, the present invention provides that the constant period of continuous low combustion is, for example, one hour, and the extremely short period of time for shifting to high combustion is, for example, about several seconds, and the low combustion operation of the oil-fired boiler is continuous for one hour. If this continues for more than an hour, the soot and coke will be forcibly blown away by preventing soot and coke from adhering and growing, and automatically switching to high combustion operation for a few seconds every hour. It also controls the oil-fired boiler to return to low combustion operation.
第１図は本発明の一実施例を示すもので、個々のボイラ
について一時間程度低燃焼が続くと負荷に関係なく強制
的に５秒〜８０秒、好適には６〜７秒間程度高燃焼（３
）Ｋ移行させて低燃焼＋１＋の時にボイラに付着し成長
するダスト、ススを吹き飛ばしてさらに自動的に低燃焼
（１′）へ復帰させるように制御する。これによって低
効率の高燃焼時間が短かいため、従来の多源設置におけ
る台数制御の特徴をそのまま残して、さらに個々の罐を
最高幼木に維持さｎるようならしめる利点がある。Fig. 1 shows an embodiment of the present invention. When low combustion continues for about one hour in each boiler, high combustion is forced for 5 to 80 seconds, preferably 6 to 7 seconds, regardless of the load. (3
) The control is performed so that the dust and soot that adhere to and grow in the boiler are blown off during low combustion +1+ by shifting to K, and further automatically return to low combustion (1'). As a result, the high combustion time with low efficiency is short, so the characteristic of controlling the number of units in the conventional multi-source installation remains unchanged, and there is an advantage that each can can be maintained at its maximum young size.
第２図は従来の多源設置の場合の台数制御について８罐
の場合の運転パターンを示す。第２図工りボイラ圧力が
２１以上の場合は３罐とも、Ｐ。FIG. 2 shows an operation pattern for eight cans in the conventional multi-source installation. If the second drawing boiler pressure is 21 or higher, all three cans are P.
〜Ｐ、の間ではＮＯ２，Ｎｏ、ボイラが、又ｐ、−ｐ２
の間でＦｉＮＯ，ボイラのみが低燃焼を続けている。Between ~P, NO2, No, boiler, and p, -p2
Among them, only the FiNO boiler continues to have low combustion.
さらに負荷の要求があって圧力がＰ、より下がれば始め
て３罐とも高燃焼へ移行することになるが、それ以上の
圧力ではどれかが低燃焼を続けていることＫなる。Furthermore, if there is a load demand and the pressure drops below P, all three cans will shift to high combustion, but if the pressure is higher than that, one of them will continue to have low combustion.
この場合、低燃焼を続けている罐は伝熱面へのスス、コ
ークス又はダストの付着、沈着により第３図に示すよう
に排ガス温度（４）が上昇し、ボイラ効率が低下するの
である。第１図の場合も排ガス温度（４）は一旦上昇し
、更に低下する。In this case, the exhaust gas temperature (4) increases as shown in FIG. 3 due to adhesion and deposition of soot, coke, or dust on the heat transfer surface of the can, which continues to have low combustion, and the boiler efficiency decreases. In the case of FIG. 1 as well, the exhaust gas temperature (4) increases once and then further decreases.
第２図においてＬは低燃焼運転、Ｈは高燃焼運転を示す
。In FIG. 2, L indicates low combustion operation and H indicates high combustion operation.
本考案は多端設置の場合の制御方法に限定されるもので
はなく、’罐のみ設置の低燃焼持続運転時にも使用さｎ
る。The present invention is not limited to the control method for multi-end installations, but can also be used during low combustion sustained operation with only cans installed.
Ru.
本発明は低燃焼優先という従来の多端設置の台数制御運
転の特徴を生かして、長期間高効率の維持可能な簡単、
安価にして効率の高い制御方法であす、シかもｌ罐のみ
設置の場合においても低燃焼の持続運転を可能ならしめ
るもので、本発明の油焚きボイラの制御方法の効果は著
しく大である。The present invention makes use of the characteristic of conventional multi-end installation number control operation, which prioritizes low combustion, to easily maintain high efficiency for a long period of time.
It is an inexpensive and highly efficient control method that enables sustained operation with low combustion even when only one boiler is installed, and the effect of the oil-fired boiler control method of the present invention is extremely large.
第１図は本発明の一実施例のボイラ排ガス温度と運転時
間、低燃焼、高燃焼の時間的関係を示す図、第２図は従
来の多端設置の台数制御におけるボイラの台数とボイラ
圧力との関係を示す図、第３図は第１図における低燃焼
の場合のボイラ排ガス温度と運転時間との関係を示す図
である。
ｌ、１′ 低燃焼
８．３′ 高燃焼Fig. 1 is a diagram showing the temporal relationship between boiler exhaust gas temperature, operating time, low combustion, and high combustion in an embodiment of the present invention, and Fig. 2 is a diagram showing the temporal relationship between the boiler exhaust gas temperature and operating time, low combustion, and high combustion in an embodiment of the present invention. FIG. 3 is a diagram showing the relationship between boiler exhaust gas temperature and operating time in the case of low combustion in FIG. 1. l, 1' Low combustion 8.3' High combustion
Claims (1)
は持続回路を設け、低燃焼運転を連続して一定時間持続
させ、所望の一定時間ごとに極短時間のみ自動的に高燃
焼に移行させることを特徴とする油焚きボイラの制御方
法。 ２、上記低燃焼運転の連続一定の時間を１時間程度とす
る特許請求の範囲第１項記載の油焚きボイラの制御方法
。 ３、上記高燃焼に移行させる一定の極短時間を５〜３０
秒程度とする特許請求の範囲第１項又は第２項記載の油
焚きボイラの制御方法。[Claims] 1. In the operation of an oil-fired boiler, a low combustion priority circuit or a sustaining circuit is provided, and the low combustion operation is continuously maintained for a certain period of time, and automatically for a very short period of time at each desired certain period of time. A control method for an oil-fired boiler characterized by shifting to high combustion. 2. The method for controlling an oil-fired boiler according to claim 1, wherein the constant continuous time of the low combustion operation is about one hour. 3. 5 to 30 minutes for a certain extremely short period of time to shift to the high combustion state mentioned above.
A method for controlling an oil-fired boiler according to claim 1 or 2, wherein the control time is about seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27499686A JPS63129221A (en) | 1986-11-18 | 1986-11-18 | Method for controlling oil burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27499686A JPS63129221A (en) | 1986-11-18 | 1986-11-18 | Method for controlling oil burning boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63129221A true JPS63129221A (en) | 1988-06-01 |
| JPH0565767B2 JPH0565767B2 (en) | 1993-09-20 |
Family
ID=17549445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27499686A Granted JPS63129221A (en) | 1986-11-18 | 1986-11-18 | Method for controlling oil burning boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63129221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6390027B1 (en) | 2000-05-31 | 2002-05-21 | C. Cowles & Company | Cycle control system for boiler and associated burner |
| US11428407B2 (en) | 2018-09-26 | 2022-08-30 | Cowles Operating Company | Combustion air proving apparatus with burner cut-off capability and method of performing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5777210B2 (en) * | 2011-08-25 | 2015-09-09 | 株式会社サムソン | Boiler with pilot combustion |
-
1986
- 1986-11-18 JP JP27499686A patent/JPS63129221A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6390027B1 (en) | 2000-05-31 | 2002-05-21 | C. Cowles & Company | Cycle control system for boiler and associated burner |
| US11428407B2 (en) | 2018-09-26 | 2022-08-30 | Cowles Operating Company | Combustion air proving apparatus with burner cut-off capability and method of performing the same |
| US11879640B2 (en) | 2018-09-26 | 2024-01-23 | Cowles Operating Company | Combustion air proving apparatus with burner cut-off capability and method of performing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0565767B2 (en) | 1993-09-20 |
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