JPH01123992A - Hot repair method of shell type kiln - Google Patents
Hot repair method of shell type kilnInfo
- Publication number
- JPH01123992A JPH01123992A JP28164787A JP28164787A JPH01123992A JP H01123992 A JPH01123992 A JP H01123992A JP 28164787 A JP28164787 A JP 28164787A JP 28164787 A JP28164787 A JP 28164787A JP H01123992 A JPH01123992 A JP H01123992A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- refractory
- plate
- opening
- repair
- 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 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000011819 refractory material Substances 0.000 claims description 9
- 230000036555 skin type Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 239000011490 mineral wool Substances 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 210000002268 wool Anatomy 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は鉄鋼業を始めとする各種産業分野において設備
されている加熱炉、保熱炉、調質炉あるいは煙道などの
高温の熱設備（本発明では窯炉と総称する）に関し、特
に繊維質耐火物をライニングした鉄皮式窯炉の熱間補修
方法に係る。[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applicable to high-temperature thermal equipment such as heating furnaces, heat retention furnaces, refining furnaces, and flues installed in various industrial fields including the steel industry. The present invention relates to a furnace (generally referred to as a kiln in the present invention), and particularly relates to a hot repair method for an iron skin type kiln lined with a fibrous refractory.
近時、窯炉における耐火ライニングを繊維質耐火物即ち
ガラス繊維、石綿、ロックウール、スラグウールあるい
はセラミックウール等を用いて施工する例が増加してい
る。In recent years, there has been an increase in the number of cases in which the refractory lining of kilns is constructed using fibrous refractories, such as glass fiber, asbestos, rock wool, slag wool, or ceramic wool.
前記繊維質耐火物は通常ペーパー、バルク、ブランケッ
ト、ブロック等の成形品とし、使用に際しては積層して
使用されることが多い。The fibrous refractories are usually formed into paper, bulk, blanket, block, or other molded products, and are often used in a stacked manner.
而して、前記繊維質耐火物をライニングした窯炉（以下
本発明ではファイバー炉と云う）において、ライニング
が損傷した際の補修方法は、−旦フアイバー炉を休止し
て炉温を下げ冷間補修する手段が採用されており、たと
えば炉内側より繊維質耐火物を損傷部を中心として広範
囲に切り取り、その後新しい繊維質耐火物を接着するか
、あるいは耐熱ボルト等を用いて固着するなどの手段に
加えて繊維質耐火物を吹き付けるほか粘土状にしたもの
を塗りつける等の手段が採用されている。Therefore, in a kiln furnace lined with the above-mentioned fibrous refractory (hereinafter referred to as a fiber furnace in the present invention), the repair method when the lining is damaged is to first stop the fiber furnace, lower the furnace temperature, and then cool the furnace. Repair methods are used, such as cutting out a wide area of fibrous refractory from inside the furnace, centering on the damaged area, and then gluing new fibrous refractory or fixing it using heat-resistant bolts, etc. In addition to this, methods such as spraying fibrous refractories and applying clay-like material have been adopted.
前述の通り従来の補修方法は、いずれも作業者が炉内に
入って作業できる程度まで炉内温度を下げる必要があり
、生産中断によるコストアップの問題や炉温の昇降に原
因する設備上の諸問題即ち耐火物や鉄皮の膨張収縮に基
く損傷つまり目地切れやライニングの脱落などの問題点
が生し易く、補修部分が拡大する恐れが多いと云う課題
がある本発明の目的は、ファイバー類の損傷を熱間にお
いて安全かつ迅速に補修する方法を提供することにあり
、他の目的は生産を中断することなくうイニングを補修
する方法を提供することにある。As mentioned above, all conventional repair methods require the temperature inside the furnace to be lowered to a point where a worker can enter the furnace and work on it. The purpose of the present invention is to solve the following problems: damage caused by the expansion and contraction of refractories and steel sheathing, such as joint cuts and lining falling off, is likely to occur, and the repaired area is likely to expand. It is an object of the present invention to provide a method for repairing similar types of damage safely and quickly in hot conditions, and another object is to provide a method for repairing cavities without interrupting production.
本発明は前記問題点を解決し、目的を達成するため繊維
質耐火物をライニングした鉄皮式窯炉の熱間補修方法に
おいて、ライニング損傷部を鉄皮と共に切断除去しつい
で切断開口部外方から熱遮蔽板を炉内に挿入して前記切
断開口部を炉内側から閉塞して炉内側からの熱放射およ
び高温ガスの噴出を遮蔽したのち、あらかじめ鉄板に繊
維質耐火物をライニングした補修用耐火パネルを前記切
断開口部に嵌装し該切断開口部と補修用耐火パネルとの
間隙に耐火物を充填したのち前記鉄板を鉄皮に溶接する
ことを特徴とする。In order to solve the above-mentioned problems and achieve the object, the present invention provides a hot repair method for an iron skin type furnace lined with fibrous refractories, in which the damaged part of the lining is cut and removed together with the iron skin, and then the damaged part of the lining is removed from the outside of the cutting opening. After inserting a heat shielding plate into the furnace and closing the cut opening from the inside of the furnace to shield heat radiation and high-temperature gas ejection from inside the furnace, the steel plate is lined with a fibrous refractory in advance. The method is characterized in that a fireproof panel is fitted into the cut opening, a gap between the cut opening and the repair fireproof panel is filled with a refractory, and then the steel plate is welded to the steel skin.
本発明の方法は、炉外から損傷したライニング部分を切
り取り、熱遮蔽板によって炉内側からの熱放射および高
温ガスの噴出を遮蔽し、ついで補修用耐火パネルを嵌装
するので、作業を安全かつ能率よ〈実施することが出来
る。The method of the present invention cuts out the damaged lining part from the outside of the furnace, uses a heat shield plate to shield heat radiation and high-temperature gas ejection from inside the furnace, and then installs a repair fireproof panel, so the work can be done safely and efficiently. Efficiency (able to implement).
また該補修用耐火パネルは、補修作業に先だってあらか
じめ製作するので、構造的に充分にかつ頑丈に製作する
ことが可能で、補修後に問題をおこすことが全く無い。Furthermore, since the repair fireproof panel is manufactured in advance prior to the repair work, it can be manufactured with sufficient structural strength and sturdiness, and no problems will occur after the repair.
さらに、切断開口部と補修用耐火パネルとの間隙には炉
外から繊維質耐火物を始めとする任意の耐火物たとえば
最も適当な成分とバインダーを有する耐火物を入念に充
填することが可能なので、熱漏洩などの問題を生ずる恐
れが無い。Furthermore, the gap between the cut opening and the repair refractory panel can be carefully filled from outside the furnace with any refractory, including fibrous refractories, for example refractories with the most suitable composition and binder. , there is no risk of problems such as heat leakage.
また、補修用耐火パネルの鉄板と鉄皮との溶接を、前記
耐火物の充填が完全に実施されたのちに行なうので、再
補修などの問題を懸念する必要は一切生じない。Further, since the iron plate and the iron skin of the repair fireproof panel are welded after the refractory is completely filled, there is no need to worry about problems such as re-repair.
第１図は本発明の一実施例にかかる大型陶器の加熱炉１
の概略断面図で鉄皮２の内側には繊維質耐火物３がライ
ニングされている。FIG. 1 shows a large pottery heating furnace 1 according to an embodiment of the present invention.
In this schematic cross-sectional view, the inside of the iron shell 2 is lined with a fibrous refractory 3.
台車４は軌条５ａ、５ｂ上に転輪６ａ、６ｂを介して走
行自在に搭載されており、該台車上の被加熱物７は通常
一方向に走行する間に予熱、加熱および徐冷作用を受け
るよう構成されている。The truck 4 is mounted on rails 5a, 5b via wheels 6a, 6b so that it can run freely, and the object 7 on the truck is usually preheated, heated, and slowly cooled while traveling in one direction. It is configured to receive
８は前記ライニング損傷部であって、第２図はその部分
拡大断面図で、繊維質耐火物３は機能およびもしくは経
済的理由により、たとえばスラグウール３ａ、セラミッ
クウール３ｂの如く複数の異なった材質のものを積層し
、接着などの手段のほかに耐熱ボルトやフックあるいは
取付金具（図示せず）を用いて鉄皮２に取り付けられて
いる。Reference numeral 8 indicates the damaged portion of the lining, and FIG. 2 is a partially enlarged cross-sectional view thereof. The fibrous refractory 3 is made of a plurality of different materials, such as slag wool 3a and ceramic wool 3b, for functional and/or economical reasons. They are laminated and attached to the steel shell 2 using heat-resistant bolts, hooks, or mounting fittings (not shown) in addition to adhesives or other means.
第３図はライニング損傷部８を炉外から鉄皮２諸共にブ
ロック９として切り取り、吊具１０を介してクレーン１
１で搬出している状況を示す概略図であり、鉄皮２はグ
ラインダーやガス切断器等を用いて切断し、繊維質耐火
物３は大型ナイフや鋸を用いて切断する。FIG. 3 shows that the damaged lining 8 is cut out from the outside of the furnace together with the steel skin 2 as a block 9, and the crane 1
1 is a schematic diagram showing the situation in which the steel shell 2 is being carried out, the steel skin 2 is cut using a grinder, a gas cutter, etc., and the fibrous refractory 3 is cut using a large knife or a saw.
１０ａ、Ｊｏｂは鉄皮２にあらかじめ溶接しておく吊金
具を示す。10a, Job indicates a hanging fitting that is welded to the steel shell 2 in advance.
而して前記ブロック９を切り出すと切断開口部１２から
炉内の高温ガスが噴出したり、烈しい熱放射が生ずるの
で、第４図に示すように鉄板に繊維質耐火物をライニン
グしたり、あるいは成形耐火板（耐火ボード）や鉄系・
非鉄系耐熱金属板などから構成された熱遮蔽板１３をチ
ェーン１４．１５を用いて吊持し切断開口部１２から炉
内に挿入し、第５図に示すように前記切断開口部１２を
炉内側から閉塞する。When the block 9 is cut out, the high-temperature gas in the furnace blows out from the cutting opening 12 and intense heat radiation occurs, so the iron plate is lined with a fibrous refractory as shown in FIG. Molded fireproof board (fireproof board) and iron-based
A heat shield plate 13 made of a non-ferrous heat-resistant metal plate or the like is suspended using chains 14 and 15 and inserted into the furnace through the cutting opening 12, and the cutting opening 12 is inserted into the furnace as shown in FIG. Blocked from the inside.
１６は前記チェーン１５の案内の滑車を示し、チェーン
１５の昇降はクレーン、ウィンチもしくは人力により適
宜に実施する。Reference numeral 16 indicates a pulley for guiding the chain 15, and the chain 15 is raised and lowered by a crane, a winch, or manually.
而して前記ブロック９の切り出しにあたって炉内からの
高温ガスの吹き出しが多い場合は炉圧を調整するほか、
防熱除塵などの安全手段を講することは云う迄も無い。Therefore, if there is a lot of high-temperature gas blowing out from the furnace when cutting out the block 9, in addition to adjusting the furnace pressure,
It goes without saying that safety measures such as heat protection and dust removal must be taken.
また前記チェーン１４．１５の代りにワイヤローブある
いはロッドなどを用いることも可能である。It is also possible to use wire lobes or rods instead of the chains 14, 15.
さて、前記ライニング損傷部８が比較的に大きい場合に
は１個の巨大ブロックとして切り出すことが困難なこと
があり、その際は複数のブロックにわけて切り出す方が
作業性が良く、かつ安全である。Now, if the damaged lining part 8 is relatively large, it may be difficult to cut it out as one huge block, and in that case, it is easier and safer to cut it out into multiple blocks. be.
第６図の概略平面図は前述のようにして、ブロック９を
切り出し熱遮蔽板１３を装着したのち、隣接した区域を
ブロック９ａ、９ｂで示すように逐次同様な手順で切り
出して、熱遮蔽板を装着する状況を示すもので、破線１
７で示す部分は隣接する熱遮蔽板相互を連結する際の溶
接部を示す。The schematic plan view of FIG. 6 shows that after the block 9 is cut out and the heat shield plate 13 is attached as described above, adjacent areas are cut out in the same manner as shown by blocks 9a and 9b, and the heat shield plate 13 is attached. The dashed line 1 indicates the situation in which the
The portion indicated by 7 indicates a welded portion when connecting adjacent heat shield plates to each other.
次に第７図は前記熱遮蔽板１３を装着した切断開口部１
２に吊持ビーム１８ａ、１８ｂに吊持された補修用耐火
パネル１９を嵌装する直前の状況を示す概略斜視図であ
って、クレーン１１により前記補修用耐火パネル１９を
切断開口部１２の直近に吊り下げた時点で、チェーン１
４．１５を弛めて熱遮蔽板１３を炉内に吊り下し、前記
台車４で炉外に搬出する。Next, FIG. 7 shows the cutting opening 1 with the heat shield plate 13 attached.
2 is a schematic perspective view illustrating the situation immediately before fitting the repair fireproof panel 19 suspended from the suspension beams 18a and 18b to the hanging beams 18a and 18b, in which the repair fireproof panel 19 is cut by the crane 11 in the vicinity of the cutting opening 12. Chain 1
4.15 is loosened, the heat shielding plate 13 is suspended in the furnace, and the trolley 4 is carried out of the furnace.
次に前記補修用耐火パネル１９を切断開口部１２に嵌装
したのち、両者の間隙２０に耐火物たとえば繊維質耐火
物２１ （セラミックウール、スラグウール等）を第８
図の概略断面図に示すように充填する。Next, after fitting the repair fireproof panel 19 into the cut opening 12, a refractory such as a fibrous refractory 21 (ceramic wool, slag wool, etc.)
Fill as shown in the schematic cross-sectional view of the figure.
前記繊維質耐火物２１は繊維質耐火物４と同等のものを
用いるほか、それ以上の品質のものを採用すると良い結
果が期待できる。即ち熱膨張性を有するものや接着強度
が高く熱収縮率の低い耐火物など成分とバインダーを適
宜に選定して入念に充填することが望ましい。Good results can be expected if the fibrous refractory 21 is equal to or of higher quality than the fibrous refractory 4. That is, it is desirable to appropriately select components and binders, such as materials with thermal expansion properties and refractories with high adhesive strength and low thermal shrinkage, and to fill them carefully.
前記補修用耐火パネル１９は第８図に示すように鉄板２
２にスラグウール２３、セラミックウール２４を固着し
て作成するが、この実施例に限ることなく、前記スラグ
ウール、セラミックウールのほか、グラスウール、ロッ
クウール、石綿等を適宜に組合せて使用しても差し支え
ない。The repair fireproof panel 19 is made of iron plate 2 as shown in FIG.
2 is made by fixing slag wool 23 and ceramic wool 24, but the invention is not limited to this example, and in addition to the slag wool and ceramic wool, glass wool, rock wool, asbestos, etc. may be used in an appropriate combination. No problem.
さらに、鉄板２２と鉄皮２との熔接に際しては、前記間
隙２０の幅より若干幅広の補強鉄板２５ａ、２５ｂを用
いて両者を熔接し間隙２ｏを完全に閉塞する。Furthermore, when welding the iron plate 22 and the iron skin 2, reinforcing iron plates 25a and 25b, which are slightly wider than the width of the gap 20, are used to weld them together to completely close the gap 2o.
本発明の方法は窯炉の作業を全く中断することな〈実施
できるほか、中断する場合も炉温を下げる必要が無いの
で、生産能率を高位に維持できるほか炉温の著しい昇降
にょる窯炉ライニングの損傷や寿命低下が全く無いので
、経済的効果は極めて多大である。The method of the present invention can be carried out without interrupting the furnace operation at all, and even if the furnace operation is interrupted, there is no need to lower the furnace temperature, so production efficiency can be maintained at a high level. Since there is no damage to the lining or reduction in its service life, the economical effects are extremely large.
第１図は加熱炉の概略断面図、第２図はライニング損傷
部の部分拡大図、第３図はブロック切り取り状況を示す
概略図、第４図、第５図は熱遮蔽板の挿入および切断開
口部の閉塞要領説明図、第６図は複数のブロックの切り
出し手順を説明するための概略平面図、第７図は補修用
耐火パネルの取り付は状況説明図、第８図は補修用耐火
パネルの嵌装と間隙充填手順を説明するための補修部概
略断面図である。
〔符号の説明〕Figure 1 is a schematic sectional view of the heating furnace, Figure 2 is a partially enlarged view of the damaged lining, Figure 3 is a schematic diagram showing how the block is cut out, and Figures 4 and 5 are the insertion and cutting of the heat shield plate. Figure 6 is a schematic plan view to explain the procedure for cutting out multiple blocks, Figure 7 is a diagram explaining the installation of a repair fireproof panel, and Figure 8 is a diagram explaining the procedure for repairing fireproof panels. FIG. 3 is a schematic cross-sectional view of a repaired portion for explaining a procedure for fitting a panel and filling a gap. [Explanation of symbols]
Claims (1)
ライニング損傷部を鉄皮と共に切断除去しついで切断開
口部外方から熱遮蔽板を炉内に挿入して前記切断開口部
を炉内側から閉塞して炉内側からの熱放射および高温ガ
スの噴出を遮蔽したのち、あらかじめ鉄板に繊維質耐火
物をライニングした補修用耐火パネルを前記切断開口部
に嵌装し該切断開口部と補修用耐火パネルとの間隙に耐
火物を充填したのち前記鉄板を鉄皮に溶接することを特
徴とする鉄皮式窯炉の熱間補修方法。In an iron skin type kiln lined with fibrous refractories,
The damaged part of the lining is cut and removed together with the steel skin, and then a heat shield plate is inserted into the furnace from outside the cutting opening to close the cutting opening from the inside of the furnace to prevent heat radiation and hot gas from blowing out from inside the furnace. After shielding, a repair fireproof panel made of a steel plate lined with a fibrous refractory is fitted into the cut opening, and the gap between the cut opening and the repair fireproof panel is filled with refractory, and then the steel plate is lined with a steel plate. A hot repair method for an iron skin kiln characterized by welding to the skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28164787A JP2645713B2 (en) | 1987-11-06 | 1987-11-06 | Hot repair method of iron-clad kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28164787A JP2645713B2 (en) | 1987-11-06 | 1987-11-06 | Hot repair method of iron-clad kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01123992A true JPH01123992A (en) | 1989-05-16 |
| JP2645713B2 JP2645713B2 (en) | 1997-08-25 |
Family
ID=17642017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28164787A Expired - Lifetime JP2645713B2 (en) | 1987-11-06 | 1987-11-06 | Hot repair method of iron-clad kiln |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2645713B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011208883A (en) * | 2010-03-30 | 2011-10-20 | Nippon Steel Corp | Method of repairing lining of reduction furnace |
-
1987
- 1987-11-06 JP JP28164787A patent/JP2645713B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011208883A (en) * | 2010-03-30 | 2011-10-20 | Nippon Steel Corp | Method of repairing lining of reduction furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2645713B2 (en) | 1997-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6609908B2 (en) | Replaceable heater cover | |
| CA2003368C (en) | Glass conduit | |
| US3647194A (en) | Protective refractory member | |
| JPH01123992A (en) | Hot repair method of shell type kiln | |
| JP2010215710A (en) | Heat insulation plate for hot repair of coke oven furnace wall, and blocking method of repair part upon hot repair and non-repair part | |
| CA1106169A (en) | Scrap preheater modulator roof assembly | |
| JP2950177B2 (en) | Hot repair method and heat insulation device for high temperature furnace wall | |
| EP0141554B1 (en) | Apparatus for heating ladles or the like | |
| JPH0217604B2 (en) | ||
| JP3933211B2 (en) | Hot-blast furnace repair work method | |
| KR101938583B1 (en) | Carrier for heating furnace | |
| KR102203377B1 (en) | Insulation apparatus for repairing of coke oven | |
| US4288219A (en) | Refractory insulated member and method of installation thereof in a reheat furnace | |
| JP2968122B2 (en) | Disassembly and repair method for refractories lining electric furnaces | |
| CN107338060A (en) | Carbonizing chamber of coke oven insulation barricade, firedoor frame change system and method | |
| CN212109538U (en) | Splicing type steel structure of industrial furnace door | |
| US5761859A (en) | Interconnected door jamb brick | |
| KR102240046B1 (en) | Insulation apparatus for end flue repair of coke oven | |
| JP4737878B2 (en) | Cutting method of hot air mains when diverting hot air | |
| JP3421280B2 (en) | Heat insulation method in coke oven brick repair | |
| JPH0629447B2 (en) | Hot air stove inner wall brick repair method | |
| JP2000073066A (en) | Repairing method for coke oven cover and repaired coke oven cover | |
| JPS5932782Y2 (en) | Water cooling pipe protection member | |
| JPS6314319Y2 (en) | ||
| US4605206A (en) | Suspended seal ring for ladle preheater |