JP2540556B2 - Method of detecting furnace condition in melting furnace - Google Patents
Method of detecting furnace condition in melting furnaceInfo
- Publication number
- JP2540556B2 JP2540556B2 JP62214022A JP21402287A JP2540556B2 JP 2540556 B2 JP2540556 B2 JP 2540556B2 JP 62214022 A JP62214022 A JP 62214022A JP 21402287 A JP21402287 A JP 21402287A JP 2540556 B2 JP2540556 B2 JP 2540556B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- pressure
- wind box
- detected
- detecting
- 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 - Lifetime
Links
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、例えば都市ゴミや石炭等の固体可燃物の焼
却灰をコークスにより加熱溶融して処理するための竪型
溶融炉等に於ける炉況検出方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to, for example, a vertical melting furnace that heats and incinerates incinerated ash of solid combustible materials such as municipal waste and coal by coke. The present invention relates to a furnace condition detection method.
（従来の技術） 従来、一般的な竪型溶融炉に於いて、原材料の装入時
機等の炉況の検出は、炉本体に設けたマノメータの圧力
変動や炉頂から吊り下げた重錘の位置の変動から作業員
が判断したり、あるいは原材料挿入口からの目視によっ
て判断する等によって行なっている。(Prior Art) Conventionally, in a general vertical melting furnace, the detection of the furnace condition such as the time when the raw materials are charged is detected by the pressure fluctuation of the manometer installed in the furnace body or the weight suspended from the furnace top. The judgment is made by the operator based on the change in the position, or by visual inspection from the raw material insertion port.
（発明が解決しようとする課題） しかしながら、これらの方法では炉況の把握が間欠的
であるため、変動時の対応が遅くなる場合が多く、作業
員も熟練を要する。また前記マノメータや重錘は、作業
員が通常いる場所よりも高所で遠方にあり、そして原材
料の装入間隔は通常４〜６分程度と短いため、作業員は
常時、状況を監視し続けなければならず、労力的負担が
大きいというような課題がある。(Problems to be Solved by the Invention) However, in these methods, the grasping of the furnace condition is intermittent, so that it is often the case that the response to fluctuations becomes slow, and the operator also requires skill. Since the manometer and the weight are located at a higher place and more distant than the place where the worker is usually located, and the charging interval of raw materials is usually about 4 to 6 minutes, the worker always keeps monitoring the situation. However, there is a problem that the labor burden is large.
本発明は、このような課題を解決することを目的とす
るものである。The present invention aims to solve such problems.
（課題を解決するための手段） 本発明は、以上の課題を解決するために、溶融炉の上
部に炉内圧力検出手段を設け、またこの上部に連なる排
ガス通路に排ガス量調節弁を設けると共に、羽口部の風
箱に風箱内圧力検出手段を設け、前記炉内圧力検出手段
により検出した炉内圧力に基づいて前記排ガス量調節弁
を制御することにより、該炉内圧力を一定に維持し、か
かる状態に於いて前記風箱内圧力検出手段により風箱内
圧力を検出して、炉内通風抵抗に対応する風箱内圧力を
監視して、その変化により炉況を検出する溶融炉に於け
る炉況検出方法を提案するものである。(Means for Solving the Problems) In order to solve the above problems, the present invention provides an in-furnace pressure detecting means in the upper part of a melting furnace, and an exhaust gas amount control valve in an exhaust gas passage connected to this upper part. , A wind box inside the tuyere is provided with a wind box internal pressure detection means, and by controlling the exhaust gas amount control valve based on the furnace internal pressure detected by the furnace internal pressure detection means, the furnace internal pressure is made constant. In this state, the pressure in the wind box is detected by the pressure detection means in the wind box in this state, the pressure in the wind box corresponding to the ventilation resistance in the furnace is monitored, and the furnace condition is detected by the change. We propose a method for detecting the state of the furnace.
（作用） 溶融炉の上部の炉内圧力を一定に維持した状態で風箱
内圧力を検出すると、この風箱内圧力は炉内通風抵抗に
対応したものとなる。一方、原材料の装入時機、棚吊り
現象の発生、ベッドコークスの状態等の炉況は、炉内通
風抵抗の変化に現れるので、上述したように検出する風
箱内圧力を監視することにより、これらの炉況を検出す
ることができる。(Operation) When the pressure in the wind box is detected while the pressure in the furnace above the melting furnace is kept constant, this pressure in the wind box corresponds to the ventilation resistance in the furnace. On the other hand, when the raw materials are charged, the occurrence of a hanging phenomenon, the state of the bed coke, and other conditions of the furnace appear in changes in the ventilation resistance in the furnace, so by monitoring the pressure in the wind box to be detected as described above, These furnace conditions can be detected.
（実施例） 次に本発明の実施例を図を参照して説明する。(Example) Next, the Example of this invention is described with reference to drawings.
第１図は本発明方法を適用した溶融炉の実施例を模式
的に示したもので、符号１は溶融炉、２は炉内圧力検出
手段、３は排ガス通路に設けた排ガス量調節弁を示すも
のである。また符号５は羽口部６の風箱７に設けた風箱
内圧力検出手段を示すものである。FIG. 1 schematically shows an embodiment of a melting furnace to which the method of the present invention is applied. Reference numeral 1 is a melting furnace, 2 is furnace pressure detection means, and 3 is an exhaust gas amount control valve provided in an exhaust gas passage. It is shown. Further, reference numeral 5 indicates a wind box internal pressure detection means provided in the wind box 7 of the tuyere portion 6.
このような構成に於いて、操業中、原材料装入口８か
ら炉１内に原材料10を装入すると、炉内通風抵抗が変
動、即ち大きくなる。そして原材料10の加熱溶融ととも
に原材料中に含まれる揮発分の燃焼が行なわれて排ガス
量も変動するので炉内圧力は絶えず変動する。従って、
この炉内圧力によって炉況を正確に検出することはでき
ない。In such a structure, when the raw material 10 is charged into the furnace 1 from the raw material charging port 8 during operation, the ventilation resistance in the furnace fluctuates, that is, becomes large. Then, as the raw material 10 is heated and melted, the volatile matter contained in the raw material is burned and the amount of exhaust gas also changes, so that the furnace pressure constantly changes. Therefore,
The furnace condition cannot be accurately detected by this furnace pressure.
そこで本発明では、まず前記炉内圧力検出手段２によ
り検出した溶融炉１の上部の炉内圧力に基づいて前記排
ガス量調節弁３を制御することにより、この炉内圧力を
一定に維持する。このような制御は、周知の適宜の制御
手段９により容易に行なうことができる。Therefore, in the present invention, first, the exhaust gas amount control valve 3 is controlled on the basis of the in-reactor pressure in the upper portion of the melting furnace 1 detected by the in-reactor pressure detecting means 2 to maintain the in-furnace pressure constant. Such control can be easily performed by the well-known appropriate control means 9.
本発明は、このように炉内圧力を一定に維持した状態
に於いて、前記風箱内圧力検出手段５により風箱内圧力
を検出する。このように検出される風箱内圧力は、溶融
炉１の上部の炉内圧力が一定であることから、風箱７か
ら溶融炉１の上部に至る炉内通風抵抗に対応したものと
なる。そして検出すべき炉況は、以下に示すように炉内
通風抵抗に現れるため、風箱内圧力を監視して、その変
化により炉況を検出することができる。According to the present invention, in the state where the pressure inside the furnace is kept constant in this way, the pressure inside the wind box is detected by the pressure inside the wind box detecting means 5. The pressure in the wind box thus detected corresponds to the ventilation resistance in the furnace from the wind box 7 to the upper portion of the melting furnace 1 because the pressure in the furnace in the upper portion of the melting furnace 1 is constant. Since the furnace condition to be detected appears in the in-furnace ventilation resistance as shown below, the furnace condition can be detected by monitoring the pressure in the wind box and the change.
次に風箱内圧力の変化の態様の例を説明する。 Next, an example of how the pressure in the wind box changes will be described.
まず第２図（ａ）は正常操業時に於ける原材料装入に
際しての風箱内圧力の変化を示すものである。即ち、図
中a1点に於いて原材料10を装入すると、炉内通風抵抗が
増すので、風箱内圧力は次第に上昇し、装入が完了した
時にはb1点に達する。そして原材料10が加熱されている
期間中は風箱内圧力は一定で、b1点からc1点に移る。次
いで原材料10が十分に加熱され、溶融されるにつれて炉
内通風抵抗が減って行くので、風箱内圧力は次第に下降
する。こうして風箱内圧力が予め設定した値（a2点＝a1
点）にまで下降した時点に於いて、次の原材料装入を行
なう。First, FIG. 2 (a) shows a change in the pressure in the wind box during charging of raw materials during normal operation. That is, when the raw material 10 is charged at point a 1 in the figure, the ventilation resistance in the furnace increases, so the pressure in the wind box gradually rises, and when charging is completed, it reaches point b 1 . And in the period in the Kazebakonai pressure raw material 10 is heated constant moves to c 1 point from b 1 point. Next, as the raw material 10 is sufficiently heated and melted, the ventilation resistance in the furnace decreases, so that the pressure in the wind box gradually decreases. In this way, the pressure in the wind box is set to a preset value (a 2 points = a 1
At the point when it has descended to the point), the next raw material is charged.
操業が正常な場合には、炉内通風抵抗はベッドコーク
ス11並びに原材料10から生じるものであって、これはベ
ッドコークス11の高さ並びに装入原材料の材質及び量が
一定である限り、一定となる。When the operation is normal, the ventilation resistance in the furnace is generated from the bed coke 11 and the raw material 10, and this is constant as long as the height of the bed coke 11 and the material and amount of the charging raw material are constant. Become.
従って、次回の原材料装入後も前述と同様な態様で風
箱内圧力が変化し、このようにして風箱内圧力が前記設
定値まで下降した時点毎に原材料装入を行なうことによ
り、適切な原材料装入を繰り返すことができる。Therefore, even after the next charging of raw materials, the pressure in the wind box changes in the same manner as described above, and the raw material charging is performed every time when the pressure in the wind box falls to the set value in this way. It is possible to repeat charging of various raw materials.
このようにして本発明では、風箱内圧力の変化、即ち
低下によって、炉内通風抵抗の低下を検出して、原材料
の装入時機を検出することができるので、原材料の自動
装入システムを容易に構成し得ると共に、自動装入シス
テムを構成しない場合であっても作業員の熟練を要しな
くなる利点がある。As described above, in the present invention, the change in the pressure in the wind box, that is, the decrease in the ventilation resistance in the furnace can be detected by the decrease, and the time of charging the raw material can be detected. It has an advantage that it can be easily configured and does not require the skill of an operator even when the automatic charging system is not configured.
ところで溶融炉内に装入された原材料は、時に棚吊り
現象を起こすことがあり、この現象が生じると、炉内通
風抵抗が増す。これを表したのが第２図（ｂ）である。
即ち、a3点に於いて挿入した原材料が棚吊り現象を起こ
すと、炉内通風抵抗が増すため、風箱内圧力はc3点から
下降せず、逆にｄ点方向に上昇して行く。The raw material charged into the melting furnace sometimes causes a hanging phenomenon, and when this phenomenon occurs, ventilation resistance in the furnace increases. This is shown in FIG. 2 (b).
That is, when the raw material inserted at point a 3 causes a hanging phenomenon, the ventilation resistance in the furnace increases, so the pressure in the wind box does not drop from point c 3 but rises toward point d. .
従ってこの圧力上昇を検出することにより棚吊り現象
の発生を検出することができ、検出した場合にはチェー
ン付き重錘12によりポーキングを行なって棚吊りを落下
せる等の、必要な対策を講ずることができる。棚吊り現
象の発生は、前記b,c点の圧力よりも適宜高い圧力値は
設定値とし、風箱内圧力の検出値と、この設定値とを比
較することによって容易に検出することができる。Therefore, it is possible to detect the occurrence of the hanging phenomenon by detecting this pressure increase, and if it is detected, take the necessary measures such as poking with the weight 12 with a chain and dropping the hanging. You can The occurrence of the hanging phenomenon can be easily detected by comparing the detected value of the pressure in the wind box and this set value with the pressure value appropriately higher than the pressure at the points b and c as the set value. .
また前述したとおり、炉内通風抵抗はベッドコークス
11の高さ及び装入原材料10の量に対応するので、毎回の
装入原材料10の量及び装入時点の風箱内圧力に変更がな
い場合には、ベッドコークス11の高さの変動に伴い、前
述したｂ（ｃ）点の風箱内圧力が変動する。即ち、追い
込みコークスの量が多すぎてベッドコーコスの高さが上
昇していると風箱内圧力が上昇し、逆に少なすぎると下
降するため、これらの圧力の変動を検出することによ
り、ベッドコークス11の状態を検出することができる。As mentioned above, the ventilation resistance in the furnace is bed coke.
Since it corresponds to the height of 11 and the amount of the charging raw material 10, if there is no change in the amount of the charging raw material 10 and the pressure in the wind box at the time of charging every time, the height of the bed coke 11 will change. Along with this, the pressure in the wind box at point b (c) described above fluctuates. That is, if the amount of driven coke is too large and the height of the bed cous rises, the pressure in the wind box rises, and conversely, if it is too small, it falls, so by detecting fluctuations in these pressures, the bed The state of coke 11 can be detected.
（発明の効果） 本発明は以上のとおり、炉内圧力を一定に維持した状
態に於いて検出した風箱内圧力を監視するので、この風
箱内圧力の変化によって、原材料の装入時機、棚吊り現
象の発生、ベッドコークスの状態等の炉況を容易に、し
かも連続的に把握することができる。こうして本発明は
原材料の自動装入システムを容易に構成することがで
き、操業の省力化、無人化を計れ、熟練を必要とせず
に、常に一定の良好な条件の基での操業を行なうことが
できると共に、操業中の炉況の変動を容易に検出するこ
とができることにより、異変に対しての対策を自動的も
しくは人為的に即座に講ずることができるという効果が
ある。(Effect of the invention) As described above, the present invention monitors the pressure in the wind box detected in the state where the pressure in the furnace is maintained at a constant level. It is possible to easily and continuously grasp the state of the furnace such as the occurrence of the hanging phenomenon and the state of bed coke. In this way, the present invention can easily construct an automatic charging system for raw materials, save labor and unmanned operation, and always operate under constant good conditions without requiring skill. In addition to the above, it is possible to easily detect the fluctuation of the furnace condition during the operation, so that it is possible to take the countermeasure against the abnormality automatically or artificially immediately.
第１図は本発明方法を適用した溶融炉の実施例を示す模
式的説明図、第２図（ａ）、（ｂ）は炉況に応じた風箱
内圧力の変化の態様の例を示す時間−圧力線図である。 符号１……溶融炉、２……炉内圧力検出手段、３……排
ガス量調節弁、４……排ガス通路、５……風箱内圧力検
出手段、６……羽口部、７……風箱、８……原材料装入
口、９……制御手段、10……原材料、11……ベッドコー
クス、12……チェーン付き重錘。FIG. 1 is a schematic explanatory view showing an embodiment of a melting furnace to which the method of the present invention is applied, and FIGS. 2 (a) and 2 (b) show an example of a mode of variation of the pressure in the wind box depending on the furnace conditions. It is a time-pressure diagram. Reference numeral 1 ... Melting furnace, 2 ... Furnace pressure detection means, 3 ... Exhaust gas amount control valve, 4 ... Exhaust gas passageway, 5 ... Windbox pressure detection means, 6 ... Tuyere section, 7 ... Wind box, 8 ... Raw material loading port, 9 ... Control means, 10 ... Raw material, 11 ... Bed coke, 12 ... Weight with chain.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実公 昭57−12384（ＪＰ，Ｙ２) 実公 昭61−7209（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Shoko 57-12384 (JP, Y2) Shoko 61-7209 (JP, Y2)
Claims (1)
またこの上部に連なる排ガス通路に排ガス量調節弁を設
けると共に、羽口部の風箱に風箱内圧力検出手段を設
け、前記炉内圧力検出手段により検出した炉内圧力に基
づいて前記排ガス量調節弁を制御することにより、該炉
内圧力を一定に維持し、かかる状態に於いて前記風箱内
圧力検出手段により風箱内圧力を検出して、炉内通風抵
抗に対応する風箱内圧力を監視して、その変化により炉
況を検出することを特徴とする溶融炉に於ける炉況検出
方法1. An in-furnace pressure detecting means is provided at an upper portion of the melting furnace,
Further, an exhaust gas amount control valve is provided in the exhaust gas passage connected to the upper part, and a wind box internal pressure detection means is provided in the wind box at the tuyere, and the exhaust gas amount is determined based on the internal furnace pressure detected by the internal furnace pressure detection means. By controlling the control valve, the pressure inside the furnace is kept constant, and in this state, the pressure inside the wind box is detected by the pressure detecting means inside the wind box, and the inside of the wind box corresponding to the ventilation resistance inside the furnace is detected. A method for detecting a furnace condition in a melting furnace, which is characterized by monitoring the pressure and detecting the furnace condition based on the change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62214022A JP2540556B2 (en) | 1987-08-27 | 1987-08-27 | Method of detecting furnace condition in melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62214022A JP2540556B2 (en) | 1987-08-27 | 1987-08-27 | Method of detecting furnace condition in melting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6457088A JPS6457088A (en) | 1989-03-03 |
| JP2540556B2 true JP2540556B2 (en) | 1996-10-02 |
Family
ID=16648978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62214022A Expired - Lifetime JP2540556B2 (en) | 1987-08-27 | 1987-08-27 | Method of detecting furnace condition in melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2540556B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697716A (en) * | 2013-12-30 | 2014-04-02 | 南通市亿控自动化系统有限公司 | System for automatically controlling and storing pressure of smelting furnace in real time |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5712384U (en) * | 1980-06-25 | 1982-01-22 | ||
| JPS617209U (en) * | 1984-06-15 | 1986-01-17 | 株式会社フジクラ | Undercarpet cable branch wiring fitting |
-
1987
- 1987-08-27 JP JP62214022A patent/JP2540556B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6457088A (en) | 1989-03-03 |
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