JPH0979527A - Abnormality detection method of heat storage body in regenerative combustion burner - Google Patents
Abnormality detection method of heat storage body in regenerative combustion burnerInfo
- Publication number
- JPH0979527A JPH0979527A JP7233582A JP23358295A JPH0979527A JP H0979527 A JPH0979527 A JP H0979527A JP 7233582 A JP7233582 A JP 7233582A JP 23358295 A JP23358295 A JP 23358295A JP H0979527 A JPH0979527 A JP H0979527A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- pressure
- storage body
- abnormality
- combustion burner
- 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.)
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gas Burners (AREA)
- Air Supply (AREA)
Abstract
(57)【要約】
【課題】 蓄熱式燃焼バーナにおける蓄熱体の異常を検
出する。
【解決手段】 蓄熱式燃焼バーナ１の燃焼排ガスの流路
２の蓄熱体３の炉側と反炉側のそれぞれに、圧力センサ
４および５を設け、蓄熱体入出側でのゲージ圧力Ｐ1 お
よびＰ2 を検出し、圧力差演算器６で両者の差圧Δｐを
演算する。そして、この差圧Δｐが、予め設定してある
許容最大圧力差Δｐmax 、許容最小圧力差Δｐmin を越
えたとき、圧力差判定器７が警報器８に信号を送り、警
報が発せられる。
(57) [Abstract] [PROBLEMS] To detect an abnormality of a heat storage body in a heat storage type combustion burner. SOLUTION: Pressure sensors 4 and 5 are provided respectively on a furnace side and a reverse furnace side of a heat storage body 3 of a combustion exhaust gas passage 2 of a heat storage type combustion burner 1, and a gauge pressure P 1 on a heat storage body inlet / outlet side is provided. P 2 is detected, and the pressure difference calculator 6 calculates the pressure difference Δp between them. When the differential pressure Δp exceeds the preset maximum allowable pressure difference Δp max and minimum allowable pressure difference Δp min , the pressure difference determiner 7 sends a signal to the alarm device 8 to issue an alarm.
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、蓄熱式燃焼バー
ナにおける蓄熱体の異常を検出する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting abnormality of a heat storage body in a regenerative combustion burner.
【０００２】[0002]
【従来の技術】蓄熱式燃焼バーナの燃焼異常を検出する
方法としては、特開平５−３１２３１８号公報に記載さ
れた技術がある。この技術に基づく燃焼異常検出方法
は、多本数のバーナの各々の予熱空気の温度を検出し、
それぞれの温度を比較することにより、燃焼異常を検出
するというものである。2. Description of the Related Art As a method for detecting a combustion abnormality of a regenerative combustion burner, there is a technique described in Japanese Patent Laid-Open No. 5-312318. The combustion abnormality detection method based on this technology detects the temperature of each preheated air of a large number of burners,
The combustion abnormality is detected by comparing the respective temperatures.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述し
た特開平５−３１２３１８号公報に記載された技術で
は、交番燃焼させる蓄熱式燃焼バーナの蓄熱体の異常を
検出しようとしても、交番燃焼しているために、蓄熱体
の温度変化が大きく、したがって蓄熱体を通過する燃焼
空気の温度も変化するので、予熱空気の温度で異常を検
出するのは困難であるという問題点があった。However, in the technique disclosed in the above-mentioned Japanese Patent Laid-Open Publication No. Hei 5-312318, even if it is attempted to detect an abnormality of the regenerator of the regenerative combustion burner for performing alternating combustion, alternating combustion is performed. Therefore, the temperature change of the heat storage body is large, and accordingly, the temperature of the combustion air passing through the heat storage body also changes, so that there is a problem that it is difficult to detect an abnormality by the temperature of the preheated air.
【０００４】この発明は、従来技術の上述のような問題
点を解消するためになされたものであり、蓄熱式燃焼バ
ーナにおける蓄熱体のダスト詰まりや欠陥発生等の異常
を容易に検出することのできる方法を提供することを目
的としている。The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is possible to easily detect an abnormality such as dust clogging of a heat storage body or a defect occurrence in a heat storage type combustion burner. The purpose is to provide a method that can.
【０００５】[0005]
【課題を解決するための手段】この発明に係る蓄熱式燃
焼バーナにおける蓄熱体の異常検出方法は、蓄熱式燃焼
バーナにおける気体流路で蓄熱体の前後の圧力を測定
し、測定した圧力から、蓄熱体の異常を検出するもので
ある。A method for detecting abnormality of a regenerator in a regenerative combustion burner according to the present invention is to measure the pressure before and after the regenerator in a gas flow path in the regenerative combustion burner, and from the measured pressure, This is to detect an abnormality of the heat storage body.
【０００６】また、燃焼排ガスの気体流路において測定
した蓄熱体入側と出側の圧力差から、蓄熱体の異常を検
出するものである。Further, the abnormality of the heat storage body is detected from the pressure difference between the heat storage body input side and the heat storage side measured in the gas flow path of the combustion exhaust gas.
【０００７】蓄熱体を挟んだ燃焼排ガスまたは燃焼空気
の流路（気体流路）における圧力変化を見ると、図５に
示すようなグラフとなる。このグラフにおいては、横軸
が流体入側から出側にかけての流体位置、縦軸がそれぞ
れの位置における圧力である。また、Ｉ点が蓄熱体入
口、Ｏ点が蓄熱体出口における圧力である。Looking at the pressure change in the flow path (gas flow path) of the combustion exhaust gas or the combustion air sandwiching the heat storage body, a graph as shown in FIG. 5 is obtained. In this graph, the horizontal axis represents the fluid position from the fluid inlet side to the fluid outlet side, and the vertical axis represents the pressure at each position. Further, point I is the pressure at the heat storage body inlet and point O is the pressure at the heat storage body outlet.
【０００８】蓄熱体３１が、図６（ａ）に示すように、
正常であると、圧力の変化は太い実線（折線ａ）のよう
になる。また、蓄熱体３１が図６（ｂ）に示すように、
部分的に詰まっている状態であると、蓄熱体３１での流
動抵抗が増え、圧力の変化は細い実線（折線ｂ）のよう
になる。また、蓄熱体３１が図６（ｃ）に示すように、
部分的に欠落している状態にあると、流動抵抗が減少す
るので、圧力の変化は点線（折線ｃ）のようになる。The heat storage body 31, as shown in FIG.
Under normal conditions, the change in pressure is as shown by the thick solid line (folded line a). In addition, as shown in FIG. 6B, the heat storage body 31 is
In the partially clogged state, the flow resistance in the heat storage body 31 increases, and the change in pressure becomes like a thin solid line (folded line b). In addition, as shown in FIG. 6C, the heat storage body 31 is
In the state of partial lack, the flow resistance decreases, so the change in pressure is as shown by the dotted line (folded line c).
【０００９】すなわち、図６（ｂ）の場合には、図６
（ａ）の場合に比較して蓄熱体前後で圧力差が大きくな
り、図６（ｃ）の場合には、図６（ａ）の場合に比較し
て蓄熱体前後で圧力差が小さくなる。図５のグラフに示
すように、Ｐb ＞Ｐa 、Ｐc ＜Ｐa となる。That is, in the case of FIG.
The pressure difference before and after the heat storage body is larger than that in the case of (a), and in the case of FIG. 6C, the pressure difference before and after the heat storage body is smaller than that in the case of FIG. 6A. As shown in the graph of FIG. 5, P b > P a and P c <P a .
【００１０】したがって、このような圧力差により、蓄
熱体の異常を検出することができる。Therefore, an abnormality of the heat storage body can be detected by such a pressure difference.
【００１１】また、図５のグラフから明らかなように、
入口圧力が一定であれば、蓄熱体出側の圧力そのものも
変化するので、圧力の変化により蓄熱体の異常を検出す
ることもできる。Further, as is clear from the graph of FIG.
If the inlet pressure is constant, the pressure on the outlet side of the regenerator also changes, so it is possible to detect an abnormality in the regenerator by the change in pressure.
【００１２】蓄熱体に同じ程度の異常があり、同じ流量
（Ｎｍ3 ／ｈ）の燃焼配排ガスが通過する場合でも、燃
焼排ガス温度が異なれば、それに伴って蓄熱体前後の圧
力差が異なってくる。よって、燃焼排ガスの温度を検出
し、検出した温度に基づいて圧力差を補正することによ
り、より正確な異常の検出ができる。Even when the heat storage body has the same degree of abnormality and the combustion exhaust gas of the same flow rate (Nm 3 / h) passes, if the combustion exhaust gas temperature is different, the pressure difference before and after the heat storage body is also different. come. Therefore, by detecting the temperature of the combustion exhaust gas and correcting the pressure difference based on the detected temperature, it is possible to detect the abnormality more accurately.
【００１３】また、同一燃焼ゾーンにおける正常な複数
の蓄熱式燃焼バーナ間においては、気体流路の圧力また
は差圧は、ほぼ同一になる。よって、同一燃焼ゾーンに
おける複数の蓄熱式燃焼バーナの気体流路で圧力または
差圧を各々検出し、これらの圧力または差圧の平均値と
個々の圧力または差圧との差が一定値以上または一定値
以下となったときに、その蓄熱式燃焼バーナの蓄熱体に
異常が発生したと判断すれば、正確な異常の判定ができ
る。Further, the pressure or the differential pressure in the gas flow passage is substantially the same between the normal plurality of regenerative combustion burners in the same combustion zone. Therefore, the pressure or differential pressure is detected in the gas flow paths of a plurality of regenerative combustion burners in the same combustion zone, and the difference between the average value of these pressures or differential pressures and the individual pressure or differential pressure is a certain value or more or If it is determined that an abnormality has occurred in the heat storage body of the regenerative combustion burner when the value becomes equal to or less than a certain value, it is possible to accurately determine the abnormality.
【００１４】[0014]
【発明の実施の形態】この発明の第一の実施形態の蓄熱
式燃焼バーナにおける蓄熱体の異常検出方法を図１によ
り説明する。BEST MODE FOR CARRYING OUT THE INVENTION A method for detecting abnormality of a heat storage body in a heat storage type combustion burner according to a first embodiment of the present invention will be described with reference to FIG.
【００１５】この蓄熱式燃焼バーナにおける蓄熱体の異
常検出方法においては、蓄熱式燃焼バーナ１の燃焼排ガ
スまたは燃焼空気の流路２の蓄熱体３の炉側と反炉側の
それぞれに、圧力センサ４および５を設け、蓄熱体入出
側でのゲージ圧力Ｐ1 およびＰ2 を検出している。In this method for detecting abnormality of the heat storage body in the heat storage type combustion burner, pressure sensors are respectively provided on the furnace side and the reverse furnace side of the heat storage body 3 in the flow path 2 of the combustion exhaust gas or the combustion air of the heat storage type combustion burner 1. 4 and 5 are provided to detect the gauge pressures P 1 and P 2 on the heat storage body inlet / outlet side.
【００１６】検出されたゲージ圧力Ｐ1 およびＰ2 の信
号は、圧力差演算器６に送られ、圧力差の絶対値（Δｐ
＝｜Ｐ1 −Ｐ2 ｜）が演算される。そして、あらかじめ
設定してある許容最大圧力差Δｐmax の値とΔｐとの差
Ａ（Ａ＝Δｐmax −Δｐ）、同様にあらかじめ設定して
ある許容最小圧力差Δｐmin の値とΔｐとの差Ｂ（Ｂ＝
Δｐ−Δｐmin ）が演算される。The signals of the detected gauge pressures P 1 and P 2 are sent to the pressure difference calculator 6 and the absolute value of the pressure difference (Δp
= | P 1 -P 2 |) is calculated. Then, the difference A (A = Δp max −Δp) between the preset maximum allowable pressure difference Δp max and the preset Δp max , and the difference between the preset minimum allowable pressure difference Δp min and Δp. B (B =
Δp−Δp min ) is calculated.
【００１７】圧力差演算器６によって演算されたＡおよ
びＢの値は、圧力差判定器７に送られ、Ａ又はＢが負と
なったら、警報器８に信号が送られ、警報が発せられる
ようになっている。The values of A and B calculated by the pressure difference calculator 6 are sent to the pressure difference determiner 7, and when A or B becomes negative, a signal is sent to the alarm device 8 to issue an alarm. It is like this.
【００１８】この実施形態において、蓄熱体３の異常が
検出できる作用を説明すると、次のとおりである。In this embodiment, the operation of detecting an abnormality of the heat storage body 3 will be described as follows.
【００１９】流量Ｑ（Ｎｍ3 ／ｈ）の燃焼排ガスが蓄熱
体３を通過するときに、蓄熱体３の部分に発生する圧力
損失をΔｐとすると、流量Ｑと圧力損失Δｐとの間に
は、（１）式の関係が成立する。 Ｑ＝Ｃv （Δｐ）1/2 …………（１）When the pressure loss generated in the portion of the heat storage body 3 when the combustion exhaust gas of the flow rate Q (Nm 3 / h) passes through the heat storage body 3, is Δp, between the flow rate Q and the pressure loss Δp. , (1) is established. Q = C v (Δp) 1/2 ………… (1)
【００２０】ここで、Ｃv は蓄熱体３の流量係数であ
る。したがって、蓄熱体３の炉側、反炉側それぞれの圧
力をＰ1 およびＰ2 とすると、Ｐ1 とＰ2 とは（２）式
の関係にあることになる。 Ｐ2 ＝Ｐ1 ＋（Ｑ／Ｃv ）2 …………（２） すなわち、流量Ｑ一定の条件のもとで、Ｐ2 とＰ1 との
差をとれば、Ｃv の値が求まる。そして、Ｃv の値は蓄
熱体３が詰まったり、欠損したりすると変化するので、
Ｃv の変化が把握できれば、蓄熱体３の異常が検出でき
るのである。Here, C v is a flow coefficient of the heat storage body 3. Therefore, assuming that the pressures on the furnace side and the counter furnace side of the heat storage body 3 are P 1 and P 2 , respectively, P 1 and P 2 are in the relationship of equation (2). P 2 = P 1 + (Q / C v ) 2 (2) That is, the value of C v can be obtained by taking the difference between P 2 and P 1 under the condition that the flow rate Q is constant. . Since the value of C v changes when the heat storage body 3 is clogged or lacks,
If the change in C v can be grasped, the abnormality of the heat storage body 3 can be detected.
【００２１】また、上述したのとは逆方向に、流量Ｑ´
（Ｎｍ3 ／ｈ）の燃焼空気が蓄熱体３を通過するとき
に、蓄熱体３の部分に発生する圧力損失をΔｐとする
と、流量Ｑ´と圧力損失Δｐとの間には、（３）式の関
係が成立する。 Ｑ´＝Ｃv ´（Δｐ）1/2 …………（３）In the opposite direction to the above, the flow rate Q '
When the pressure loss generated in the portion of the heat storage body 3 when the combustion air of (Nm 3 / h) passes through the heat storage body 3, is Δp, the flow rate Q ′ and the pressure loss Δp are (3) The relation of formula is materialized. Q ′ = C v ′ (Δp) 1/2 ………… (3)
【００２２】ここで、Ｃv ´は蓄熱体３の流量係数であ
る。したがって、蓄熱体３の炉側、反炉側それぞれの圧
力をＰ1 およびＰ2 とすると、Ｐ1 とＰ2 とは（４）式
の関係にあることになる。 Ｐ2 ＝Ｐ1 ＋（Ｑ´／Ｃv ´）2 …………（４） すなわち、流量Ｑ´一定の条件のもとで、Ｐ2 とＰ1 と
の差をとれば、Ｃv ´の値が求まり、上述したのと同様
にして蓄熱体３の異常を検出することができる。Here, C v ′ is a flow coefficient of the heat storage body 3. Therefore, assuming that the pressures on the furnace side and the counter furnace side of the heat storage body 3 are P 1 and P 2 , respectively, P 1 and P 2 are in the relationship of equation (4). P 2 = P 1 + (Q ′ / C v ′) 2 (4) That is, if the difference between P 2 and P 1 is taken under the constant flow rate Q ′, then C v ′ The value of is obtained, and the abnormality of the heat storage body 3 can be detected in the same manner as described above.
【００２３】この実施形態においては、燃焼条件が種々
変化しても、上記ＱまたはＱ´の値を、通常の操業状態
で用いられる水準の値（複数の水準がある）に選定して
おけば、早期にＣv またはＣv ´の変化を検出できると
いう効果がある。In this embodiment, even if the combustion conditions are variously changed, the value of Q or Q'can be selected as a value (a plurality of levels) of a level used in a normal operating condition. Therefore, there is an effect that a change in C v or C v ′ can be detected early.
【００２４】次に、蓄熱体３の閉塞状態と圧力差の関係
を把握するために、図２に示すように、蓄熱式燃焼バー
ナ１の燃焼排ガス流路２の蓄熱体３入側に遮蔽板９を配
置し、蓄熱体３の一部を燃焼排ガスが通過できないよう
にして、蓄熱体３の入出側の差圧を調査した。Next, in order to grasp the relationship between the closed state of the heat storage body 3 and the pressure difference, as shown in FIG. 2, a shield plate is provided on the heat storage body 3 inlet side of the combustion exhaust gas flow passage 2 of the heat storage type combustion burner 1. 9 was arranged so that the combustion exhaust gas could not pass through a part of the heat storage body 3, and the differential pressure on the inlet and outlet sides of the heat storage body 3 was investigated.
【００２５】この蓄熱式燃焼バーナ１の容量は、８０万
ｋｃａｌ／ｈであり、燃料には製鉄所副生混合ガス（２
６００ｋｃａｌ／Ｎｍ3 、Ｃｏ：２５％、Ｈ2 ：２４
％、ＣＨ4 ：１２％、ＣＯ2 ：１２％、Ｎ2 ：２７％）
を使用し、空気比１．１で燃焼させた。また、蓄熱体３
は、ハニカム寸法が５ｍｍ×５ｍｍ×長さ５００ｍｍ、
蓄熱体面積が５００ｍｍ×５００ｍｍであり、遮蔽板９
で遮蔽した面積は全体の２０％であった。The heat storage type combustion burner 1 has a capacity of 800,000 kcal / h, and the fuel is a by-product gas mixture (2
600 kcal / Nm 3 , Co: 25%, H 2 : 24
%, CH 4: 12%, CO 2: 12%, N 2: 27%)
Was used and was burned at an air ratio of 1.1. In addition, the heat storage body 3
Has a honeycomb size of 5 mm x 5 mm x length of 500 mm,
The heat storage area is 500 mm × 500 mm, and the shielding plate 9
The area shielded by was 20% of the whole.
【００２６】この結果、蓄熱体３の入出側圧力差は９７
ｍｍＨ2 Ｏであり、遮蔽板９で遮蔽しない場合の７０ｍ
ｍＨ2 Ｏに比較して十分に圧力差が大きくなり、蓄熱体
の異常を蓄熱体前後の圧力差で検出できることが分かっ
た。As a result, the pressure difference between the inlet and outlet sides of the heat storage body 3 is 97.
mmH 2 O, 70m when not shielded by the shield 9
It was found that the pressure difference was sufficiently large as compared with mH 2 O, and abnormality in the heat storage body could be detected by the pressure difference before and after the heat storage body.
【００２７】次に、この発明の第二の実施形態の蓄熱式
燃焼バーナにおける蓄熱体の異常検出方法を図３により
説明する。Next, a method for detecting abnormality of the heat storage body in the heat storage type combustion burner according to the second embodiment of the present invention will be described with reference to FIG.
【００２８】この蓄熱式燃焼バーナにおける蓄熱体の異
常検出方法においては、蓄熱式燃焼バーナ１１の燃焼排
ガスまたは燃焼空気の流路１２の蓄熱体１３の炉側と反
炉側のそれぞれに、圧力検出口１４および１５を設け、
それらで検出された圧力を差圧検出器１６に導いて、燃
焼排ガスの蓄熱体入出側差圧Δｐを検出するとともに、
蓄熱体１３の反炉側に温度計１７を設け、燃焼排ガスの
蓄熱体出側温度Ｔを検出している。In this method for detecting abnormality of the heat storage body in the heat storage type combustion burner, pressure detection is performed on the furnace side and the reverse furnace side of the heat storage body 13 of the combustion exhaust gas or combustion air flow path 12 of the heat storage type combustion burner 11. With mouths 14 and 15,
The pressure detected by them is guided to the differential pressure detector 16 to detect the heat storage body inlet / outlet side differential pressure Δp of the combustion exhaust gas, and
A thermometer 17 is provided on the side of the regenerator of the heat storage body 13 to detect the heat storage body outlet temperature T of the combustion exhaust gas.
【００２９】検出された差圧Δｐと蓄熱体出側温度Ｔと
は、流量係数演算器１８に送られ、あらかじめ設定して
ある燃焼排ガスの流量ＱとこれらΔｐおよびＴとから、
燃焼排ガスの流量係数Ｃv が、（５）式により演算され
る。 Ｃv ＝ｆ（Δｐ、Ｑ、Ｔ）…………（５） （５）式により温度補正をするようにしたのは、流量Ｑ
が一定でも、Δｐは蓄熱体１３の出口温度によって若干
変化するからである。The detected differential pressure Δp and the heat storage body outlet temperature T are sent to the flow coefficient calculator 18 and are calculated from the preset flow rate Q of the combustion exhaust gas and these Δp and T.
The flow coefficient C v of the combustion exhaust gas is calculated by the equation (5). C v = f (Δp, Q, T) (5) The temperature is corrected by the equation (5) because the flow rate is Q.
This is because even if is constant, Δp slightly changes depending on the outlet temperature of the heat storage body 13.
【００３０】そして、流量係数判定器１９により、演算
された流量係数Ｃv と、流量係数の最大許容値および最
小許容値とが比較され、Ｃv が所定の範囲を超えたとき
には、信号が警報器２０に送られ、警報が発せられる。Then, the flow coefficient determiner 19 compares the calculated flow coefficient C v with the maximum allowable value and the minimum allowable value of the flow coefficient, and when C v exceeds a predetermined range, a signal warns. It is sent to the container 20 and an alarm is issued.
【００３１】この実施形態の場合には、第一の実施形態
に比較して、 （１）流量係数Ｃv を温度に左右されずに、より正確に
求めることができる。 （２）差圧計を使用するので、圧力検出が簡単にでき
る。 という効果がある。なお、温度計は、燃焼排ガスの低温
度側に設けるので、寿命は長くなる。In the case of this embodiment, as compared with the first embodiment, (1) the flow coefficient C v can be obtained more accurately without being affected by temperature. (2) Since a differential pressure gauge is used, pressure detection can be performed easily. This has the effect. Since the thermometer is provided on the low temperature side of the combustion exhaust gas, the life is extended.
【００３２】次に、この発明の第三の実施形態の蓄熱式
燃焼バーナにおける蓄熱体の異常検出方法を図４により
説明する。Next, a method for detecting abnormality of the heat storage body in the heat storage type combustion burner according to the third embodiment of the present invention will be described with reference to FIG.
【００３３】この実施形態においては、同一時間帯にお
いて燃焼している複数の燃焼バーナ同志、あるいは燃焼
排ガス排出をしている複数の燃焼バーナ同志を一つのグ
ループとしてグルーピングして、蓄熱体の異常を検出す
る。すなわち、図４においては、燃焼している蓄熱式燃
焼バーナ２１ａ、２１ｂおよび２１ｃを第一のグループ
とし、燃焼排ガス排出をしている蓄熱式燃焼バーナ２１
ｄ、２１ｅおよび２１ｆを第二のグループとしている。In this embodiment, a plurality of combustion burners combusting in the same time zone or a plurality of combustion burners combusting flue gas are grouped as one group to detect abnormalities in the heat storage body. To detect. That is, in FIG. 4, the regenerative combustion burners 21a, 21b, and 21c that are burning are the first group, and the regenerative combustion burner 21 that discharges combustion exhaust gas is used.
The second group is d, 21e, and 21f.
【００３４】そして、第一のグループの燃焼バーナの蓄
熱帯２３ａ、２３ｂおよび２３ｃの反炉側に設けた圧力
発信器２４ａ、２４ｂおよび２４ｃの値ｐa 、ｐb およ
びｐ c を平均圧力演算器２５Ａに、また第二のグループ
の燃焼バーナの蓄熱体２３ｄ、２３ｅおよび２３ｆの反
炉側に設けた圧力発信器２４ｄ、２４ｅおよび２４ｆの
値ｐd 、ｐe およびｐf を平均圧力演算器２５Ｂに送っ
ている。Then, the storage of the combustion burners of the first group
Pressure provided on the anti-furnace side of the tropics 23a, 23b and 23c
Value p of transmitters 24a, 24b and 24ca, PbAnd
And p cTo the average pressure calculator 25A and the second group
Of the regenerators 23d, 23e and 23f of the combustion burner
Of the pressure transmitters 24d, 24e and 24f provided on the furnace side
Value pd, PeAnd pfTo the average pressure calculator 25B
ing.
【００３５】そして、平均圧力演算器２５Ａにおいては
平均圧力ＰA を、ＰA ＝（ｐa ＋ｐ b ＋ｐc ）／３とし
て演算し、平均圧力演算器２５Ｂにおいては平均圧力Ｐ
B を、ＰB ＝（ｐd ＋ｐe ＋ｐf ）／３として演算す
る。In the average pressure calculator 25A,
Average pressure PATo PA= (Pa+ P b+ Pc) / 3
The average pressure P is calculated by the average pressure calculator 25B.
BTo PB= (Pd+ Pe+ Pf) / 3
You.
【００３６】平均圧力演算器２５Ａおよび２５Ｂによっ
て演算された平均圧力ＰA およびＰ B の値は、それぞれ
差圧演算器２６Ａおよび２６Ｂに送られる。By the average pressure calculators 25A and 25B,
Average pressure P calculated byAAnd P BThe value of
It is sent to the differential pressure calculators 26A and 26B.
【００３７】そして、差圧演算器２６Ａにおいては、
（ｐa ーＰA ）、（ｐb ーＰA ）および（ｐc ーＰA ）
の値が、また差圧演算器２６Ｂにおいては、（ｐd ーＰ
A ）、（ｐe ーＰA ）および（ｐf ーＰA ）の値が演算
される。そして、これらの値の一つが一定値以上となっ
た場合には、警報器２７に信号が送られ、警報が発せら
れる。In the differential pressure calculator 26A,
(P a over P A), (p b over P A) and (p c over P A)
In the value, also the pressure difference calculator 26B, (p d over P
A), is calculated the value of (p e over P A) and (p f over P A). When one of these values exceeds a certain value, a signal is sent to the alarm device 27 and an alarm is issued.
【００３８】上述のようにして、蓄熱体の異常を検出す
るのは、次のような理由からである。すなわち、炉内圧
力は一様に作用しているので、蓄熱体が正常であるとき
は、同じ容量の蓄熱体同士を比較すると、蓄熱体出側
（反炉側）での燃焼排ガスの圧力は同一となる。したが
って、同一時間帯において排ガス排出を行っている複数
の燃焼バーナの、蓄熱体出側（反炉側）での燃焼排ガス
の圧力の平均値と、個々の燃焼バーナの蓄熱体出側（反
炉側）での燃焼排ガスの圧力とは等しくなる。The reason why the abnormality of the heat storage body is detected as described above is as follows. That is, since the pressure in the furnace acts uniformly, when the heat storage bodies are normal, comparing the heat storage bodies with the same capacity, the pressure of the combustion exhaust gas on the heat storage body outlet side (reverse furnace side) is Will be the same. Therefore, the average value of the pressure of the combustion exhaust gas on the heat storage body outlet side (reactor side) of a plurality of combustion burners that discharge exhaust gas in the same time zone, and the heat storage body outlet side (reactor furnace) of each combustion burner. Side) is equal to the pressure of the combustion exhaust gas.
【００３９】一方、同一時間帯において排ガス排出を行
っている複数の燃焼バーナのうちの一つの蓄熱体に異常
があると、その蓄熱体出側（反炉側）での燃焼排ガスの
圧力は、上昇または下降する。したがって、上述のよう
な平均圧力との間に差が発生するので、この差を検出す
ることにより、異常が検出できるのである。On the other hand, if one of the plurality of combustion burners discharging exhaust gas in the same time zone has an abnormality, the pressure of the combustion exhaust gas on the heat storage body outlet side (reverse furnace side) is Ascend or descend. Therefore, a difference occurs between the average pressure and the average pressure as described above, and the abnormality can be detected by detecting this difference.
【００４０】そして、この異常検出方法を採用すること
により、炉内圧力が変動しても、すなわち経時的に前記
蓄熱体出側（反炉側）での燃焼排ガスの圧力の平均値が
変動しても、蓄熱体の異常を検出できるという効果があ
る。By adopting this abnormality detection method, even if the furnace pressure fluctuates, that is, the mean value of the combustion exhaust gas pressure on the heat storage body outlet side (reverse furnace side) fluctuates over time. However, there is an effect that an abnormality of the heat storage body can be detected.
【００４１】[0041]
【発明の効果】この発明により、蓄熱式燃焼バーナにお
ける蓄熱体の異常を、正確に検出することができる。According to the present invention, the abnormality of the heat storage body in the heat storage type combustion burner can be accurately detected.
【図１】この発明の第一の実施形態の蓄熱式燃焼バーナ
における蓄熱体の異常検出方法の説明図である。FIG. 1 is an explanatory diagram of a method for detecting abnormality of a heat storage body in a heat storage type combustion burner according to a first embodiment of the present invention.
【図２】蓄熱体の閉塞状況と差圧との関係を調査する方
法を示した説明図である。FIG. 2 is an explanatory diagram showing a method for investigating the relationship between the closed state of the heat storage body and the differential pressure.
【図３】この発明の第二の実施形態の蓄熱式燃焼バーナ
における蓄熱体の異常検出方法の説明図である。FIG. 3 is an explanatory diagram of a method for detecting abnormality of a heat storage body in a heat storage type combustion burner according to a second embodiment of the present invention.
【図４】この発明の第三の実施形態の蓄熱式燃焼バーナ
における蓄熱体の異常検出方法の説明図である。FIG. 4 is an explanatory diagram of a method for detecting abnormality of a heat storage body in a heat storage type combustion burner according to a third embodiment of the present invention.
【図５】蓄熱体前後の圧力の変化を示すグラフである。FIG. 5 is a graph showing changes in pressure before and after the heat storage body.
【図６】蓄熱体の破損状況を示す説明図であり、（ａ）
は正常な場合、（ｂ）は部分的に詰まっている場合、
（ｃ）は部分的に欠落している場合である。FIG. 6 is an explanatory view showing a damage state of the heat storage body, (a)
Is normal, (b) is partially clogged,
(C) is a case where it is partially missing.
１ 蓄熱式燃焼バーナ ２ 燃焼排ガス流路 ３ 蓄熱体 ４ 圧力センサ ５ 圧力センサ ６ 圧力差演算器 ７ 圧力差判定器 ８ 警報器 ９ 遮蔽板 １１ 蓄熱式燃焼バーナ １２ 燃焼排ガスまたは燃焼空気の流路 １３ 蓄熱体 １４ 圧力検出口 １５ 圧力検出口 １６ 差圧検出器 １７ 温度計 １８ 流量係数演算器 １９ 流量係数判定器 ２０ 警報器 ２１ａ、２１ｂ、２１ｃ、２１ｄ、２１ｅ、２１ｆ 蓄
熱式燃焼バーナ ２３ａ、２３ｂ、２３ｃ、２３ｄ、２３ｅ、２３ｆ 蓄
熱体 ２４ａ、２４ｂおよび２４ｃ、２４ｄ、２４ｅ、２４ｆ
圧力発信器 ２５Ａ、２５Ｂ 平均圧力演算器 ２６Ａ、２６Ｂ 差圧演算器 ２７ 警報器DESCRIPTION OF SYMBOLS 1 Heat storage type combustion burner 2 Combustion exhaust gas flow path 3 Heat storage body 4 Pressure sensor 5 Pressure sensor 6 Pressure difference calculator 7 Pressure difference determination device 8 Alarm device 9 Shielding plate 11 Heat storage type combustion burner 12 Flow path of combustion exhaust gas or combustion air 13 Heat storage body 14 Pressure detection port 15 Pressure detection port 16 Differential pressure detector 17 Thermometer 18 Flow coefficient calculator 19 Flow coefficient determination device 20 Alarm device 21a, 21b, 21c, 21d, 21e, 21f Heat storage combustion burner 23a, 23b, 23c, 23d, 23e, 23f Heat storage bodies 24a, 24b and 24c, 24d, 24e, 24f
Pressure transmitter 25A, 25B Average pressure calculator 26A, 26B Differential pressure calculator 27 Alarm device
Claims (4)
熱体の前後の圧力を測定し、測定した圧力から、蓄熱体
の異常を検出することを特徴とする蓄熱式燃焼バーナに
おける蓄熱体の異常検出方法。1. An abnormality of a regenerator in a regenerative combustion burner, characterized in that a pressure before and after a regenerator is measured in a gas flow path of the regenerative combustion burner, and an abnormality of the regenerator is detected from the measured pressure. Detection method.
蓄熱体入側と出側の圧力差から、蓄熱体の異常を検出す
ることを特徴とする請求項１に記載の蓄熱式燃焼バーナ
における蓄熱体の異常検出方法。2. The heat storage in the regenerative combustion burner according to claim 1, wherein an abnormality of the heat storage body is detected from the pressure difference between the heat storage body inlet side and the heat storage body outlet side measured in the gas flow path of the combustion exhaust gas. How to detect abnormalities in the body.
度に基づいて圧力差を補正することを特徴とする請求項
２に記載の蓄熱式燃焼バーナにおける蓄熱体の異常検出
方法。3. The method for detecting an abnormality of a regenerator in a regenerative combustion burner according to claim 2, wherein the temperature of the combustion exhaust gas is detected and the pressure difference is corrected based on the detected temperature.
焼バーナの気体流路で圧力または差圧を各々検出し、こ
れらの圧力または差圧の平均値と個々の圧力または差圧
との差が一定値以上または一定値以下となったときに、
その蓄熱式燃焼バーナの蓄熱体に異常が発生したと判断
することを特徴とする請求項１、２または３に記載の蓄
熱式燃焼バーナにおける蓄熱体の異常検出方法。4. A pressure or a differential pressure is detected respectively in the gas flow paths of a plurality of regenerative combustion burners in the same combustion zone, and the difference between the average value of these pressures or differential pressures and the individual pressure or differential pressure is constant. When the value is above the value or below a certain value,
The abnormality detection method for the heat storage type burner according to claim 1, 2 or 3, wherein it is determined that an abnormality has occurred in the heat storage type burner of the heat storage type combustion burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7233582A JPH0979527A (en) | 1995-09-12 | 1995-09-12 | Abnormality detection method of heat storage body in regenerative combustion burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7233582A JPH0979527A (en) | 1995-09-12 | 1995-09-12 | Abnormality detection method of heat storage body in regenerative combustion burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0979527A true JPH0979527A (en) | 1997-03-28 |
Family
ID=16957333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7233582A Withdrawn JPH0979527A (en) | 1995-09-12 | 1995-09-12 | Abnormality detection method of heat storage body in regenerative combustion burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0979527A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1126217A4 (en) * | 1999-09-01 | 2002-11-20 | Nippon Kokan Kk | HEAT TREATMENT PLANT, METHOD FOR INSERTING POROUS, REGENERATIVE BODY, PRODUCTION METHOD FOR A HEAT-TREATED SUBSTANCE, SELECTION METHOD FOR POROUS, REGENERATIVE BODY, AND USED INGREDIENT COMPONENT COMPONENTS |
| JP2011094906A (en) * | 2009-10-30 | 2011-05-12 | Kobe Steel Ltd | Device and method for monitoring combustion of heating furnace and combustion control system |
| CN103513291A (en) * | 2013-08-21 | 2014-01-15 | 国家电网公司 | Analysis early warning system based on air pre-heater bypass sealing air speed for air pre-heater blocking detection |
| KR101439990B1 (en) * | 2014-06-23 | 2014-09-12 | 알코엔지니어링주식회사 | Regenerator auto control system and method of regenerative gas burner using differential pressure |
-
1995
- 1995-09-12 JP JP7233582A patent/JPH0979527A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1126217A4 (en) * | 1999-09-01 | 2002-11-20 | Nippon Kokan Kk | HEAT TREATMENT PLANT, METHOD FOR INSERTING POROUS, REGENERATIVE BODY, PRODUCTION METHOD FOR A HEAT-TREATED SUBSTANCE, SELECTION METHOD FOR POROUS, REGENERATIVE BODY, AND USED INGREDIENT COMPONENT COMPONENTS |
| JP2011094906A (en) * | 2009-10-30 | 2011-05-12 | Kobe Steel Ltd | Device and method for monitoring combustion of heating furnace and combustion control system |
| CN103513291A (en) * | 2013-08-21 | 2014-01-15 | 国家电网公司 | Analysis early warning system based on air pre-heater bypass sealing air speed for air pre-heater blocking detection |
| KR101439990B1 (en) * | 2014-06-23 | 2014-09-12 | 알코엔지니어링주식회사 | Regenerator auto control system and method of regenerative gas burner using differential pressure |
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