JP3040208B2 - Furnace wall equipment for firing furnace - Google Patents

Furnace wall equipment for firing furnace

Info

Publication number
JP3040208B2
JP3040208B2 JP3218308A JP21830891A JP3040208B2 JP 3040208 B2 JP3040208 B2 JP 3040208B2 JP 3218308 A JP3218308 A JP 3218308A JP 21830891 A JP21830891 A JP 21830891A JP 3040208 B2 JP3040208 B2 JP 3040208B2
Authority
JP
Japan
Prior art keywords
furnace
wall
ceramic fiber
outer plate
firing
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
Application number
JP3218308A
Other languages
Japanese (ja)
Other versions
JPH0560468A (en
Inventor
運雄 中浴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
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Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP3218308A priority Critical patent/JP3040208B2/en
Publication of JPH0560468A publication Critical patent/JPH0560468A/en
Application granted granted Critical
Publication of JP3040208B2 publication Critical patent/JP3040208B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、焼成炉の炉壁構造に関
するもので、詳細には、炉内ガスによる炉壁の腐食を防
止する炉壁構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace wall structure of a firing furnace, and more particularly, to a furnace wall structure for preventing a furnace wall from being corroded by gas in the furnace.

【0002】[0002]

【従来の技術】従来より、窯詰め、焼成、冷却、窯出し
の作業が不連続的に行なわれるシャトルキルンは、比較
的建設費が安く、多種類、少量生産に適することで知ら
れている。このシャトルキルンの炉内壁にセラミックフ
ァイバを用いたものでは、セラミックファイバの炉外壁
側に鉄製の外板を設けるのが一般的である。炉内壁側に
セラミックファイバを用いるのは、熱損失を低減し、燃
料消費量を小さくする等の理由による。
2. Description of the Related Art Conventionally, shuttle kilns in which the operations of kiln filling, firing, cooling, and kiln discharging are performed discontinuously are known to be relatively inexpensive in construction cost and suitable for large-scale, small-quantity production. . In the case of using a ceramic fiber for the furnace inner wall of this shuttle kiln, it is common to provide an iron outer plate on the furnace outer wall side of the ceramic fiber. The reason for using ceramic fibers on the inner wall side of the furnace is that heat loss is reduced and fuel consumption is reduced.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うな従来のシャトルキルンの炉壁構造によると、炉内壁
側温度は高温例えば1200℃以上にもなり、炉外壁側
の外板温度は例えば100℃位となり、炉壁厚さ方向の
温度勾配が極めて大きい。また一般にシャトルキルン内
では、HCl、H2 SO4 、HNO3 、HF、Cl2
2 O等のガスが発生し、これらがセラミックファイバ
を通して外板である鉄板をアタックし、例えば炉内ガス
中の約1〜5体積%以下のガスが外板である鉄板をアタ
ックする。そのため、鉄板が酸化しやすいので、この鉄
板とセラミックファイバを固定する金具、ボルト、ナッ
ト等の腐蝕が促進されると、炉壁の損傷ひいては炉壁の
倒壊を発生するおそれがある。
However, according to the furnace wall structure of such a conventional shuttle kiln, the inner wall temperature of the furnace becomes high, for example, 1200 ° C. or more, and the outer plate temperature on the outer wall of the furnace becomes, for example, 100 ° C. And the temperature gradient in the furnace wall thickness direction is extremely large. Generally, in a shuttle kiln, HCl, H 2 SO 4 , HNO 3 , HF, Cl 2 ,
Gases such as H 2 O are generated, and these attack the iron plate as the outer plate through the ceramic fiber. For example, about 1 to 5% by volume or less of the gas in the furnace gas attacks the iron plate as the outer plate. For this reason, the iron plate is easily oxidized, and if the corrosion of metal fittings, bolts, nuts and the like for fixing the iron plate and the ceramic fiber is promoted, there is a possibility that the furnace wall may be damaged and the furnace wall may collapse.

【0004】本発明は、このような問題点を解決するた
めになされたもので、炉壁の酸化を防止し、炉壁の安全
性を向上するとともに、焼成される製品の品質不良を防
止するようにした焼成炉の炉壁構造を提供することを目
的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is intended to prevent the oxidation of the furnace wall, improve the safety of the furnace wall, and prevent the quality of a fired product from being defective. An object of the present invention is to provide a furnace wall structure of a firing furnace as described above.

【0005】[0005]

【課題を解決するための手段】前記目的を達成するため
の本発明による焼成炉の炉壁構造は、炉内壁を構成する
セラミックファイバブロックと、炉外壁を構成する外板
とからなる焼成炉であって、前記外板の少なくとも炉内
壁側に焼成時の温度が300℃〜600℃になる位置に
炉内ガスが前記セラミックファイバブロックを浸透して
前記外板に接触するのを遮断するガス遮断体を設けたこ
とを特徴とする。
A furnace wall structure of a firing furnace according to the present invention for achieving the above object is a firing furnace comprising a ceramic fiber block forming an inner wall of a furnace and an outer plate forming an outer wall of the furnace. At a position where the temperature during firing is at least 300 ° C. to 600 ° C. on at least the inner wall side of the furnace of the outer plate , it is assumed that the furnace gas permeates the ceramic fiber block and contacts the outer plate. It is characterized in that a gas shut-off body for shutting off is provided.

【0006】[0006]

【作用】本発明の焼成炉の炉壁構造によると、炉内壁を
構成するセラミックファイバの内部に炉内ガスが外板に
接触するのを防止するガス遮断体を設けたため、炉内ガ
スによる外板の侵食、酸化が防止される。
According to the furnace wall structure of the firing furnace of the present invention, since the gas barrier for preventing the gas in the furnace from contacting the outer plate is provided inside the ceramic fiber constituting the inner wall of the furnace, the gas flow in the furnace is reduced. Plate erosion and oxidation are prevented.

【0007】[0007]

【実施例】以下、本発明の実施例を図面にもとづいて説
明する。不連続炉を代表するシャトルキルンに本発明を
適用した実施例を図1および図2に示す。図2に示され
るように、シャトルキルン1の炉内には、車輪3をもつ
台車2が出し入れ自在になっており、台車2の頂面2a
に支柱4を介して棚組5が形成されている。棚組5の内
部には、図示しない被焼成品が配置される。
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment in which the present invention is applied to a shuttle kiln representing a discontinuous furnace. As shown in FIG. 2, a bogie 2 having wheels 3 is freely inserted into and removed from the furnace of the shuttle kiln 1, and a top surface 2 a of the bogie 2 is provided.
, A shelf set 5 is formed via a support 4. An object to be fired (not shown) is arranged inside the shelf set 5.

【0008】炉壁8は、図1に示すように、セラミック
ファイバブロック9と、鉄板からなる外板10とからな
る。セラミックファイバブロック9は、セラミックファ
イバからなるブランケット状のものが折り畳まれて1つ
のユニットを形成し、このユニットが炉内壁を構成する
ように側壁部および天井部に組み込まれている。セラミ
ックファイバブロック9は、ボルト13およびナット1
4によって外板10に固定されている。
As shown in FIG. 1, the furnace wall 8 comprises a ceramic fiber block 9 and an outer plate 10 made of an iron plate. The ceramic fiber block 9 is formed by folding a blanket made of ceramic fiber to form one unit, and this unit is incorporated into the side wall and the ceiling so as to form a furnace inner wall. The ceramic fiber block 9 includes a bolt 13 and a nut 1.
It is fixed to the outer plate 10 by 4.

【0009】そしてセラミックファイバブロック9の炉
外側にステンレス製の箔体20がセラミックファイバブ
ロック9の外周に被覆されている。この箔体20の外側
には、セラミックファイバブロック21が鉄製の外板1
0との間に設けられている。ステンレス製の箔体20を
設ける位置は、図3に示すように、外板10の内壁面と
セラミックファイバブロック9の炉内壁面との距離Lが
例えば250mmの場合、外板10の炉内側面からの距
離Xは0〜75mmの範囲がよく、さらに望ましくは2
5〜75mmの範囲がよい。これは、箔体20による酸
化防止効果は、外板10の内壁側にステンレス製の箔体
が設けられていればよく、かつ酸化防止効果を発揮する
のは500〜600℃以下で通常発揮されるから距離X
が75mm以下がよいさらには、炉内ガスの水分によ
って外板10が結露するのを防止するためには、箔体2
0を設ける位置が300〜600℃の範囲がよい。例え
ば外板10の内壁面とセラミックファイバブロック9の
炉内壁面との距離Lが250mmの場合、距離Xが25
〜75mmが望ましい。箔体20の厚さは、0.01〜
0.2mmの範囲にするのがよい。この箔体20は耐酸
化性および耐熱性の良好なものである。
[0009] A stainless steel foil body 20 is coated on the outer periphery of the ceramic fiber block 9 outside the furnace of the ceramic fiber block 9. On the outside of the foil body 20, a ceramic fiber block 21 is attached to the outer plate 1 made of iron.
0. As shown in FIG. 3, when the distance L between the inner wall surface of the outer plate 10 and the inner wall surface of the ceramic fiber block 9 is 250 mm, for example, as shown in FIG. Is preferably in the range of 0 to 75 mm, more preferably 2 to 75 mm.
A range of 5 to 75 mm is preferable. This means that the antioxidant effect of the foil body 20 only needs to be provided with a stainless steel foil body on the inner wall side of the outer plate 10, and the antioxidant effect is normally exhibited at 500 to 600 ° C or lower. Distance X
Is preferably 75 mm or less . Further, in order to prevent dew condensation on the outer plate 10 due to moisture in the furnace gas, the foil 2
0 providing position good range of 300 to 600 ° C.. example
Of the inner wall surface of the outer plate 10 and the ceramic fiber block 9
If the distance L between the furnace wall is 250 mm, distance X is 25
7575 mm is desirable. The thickness of the foil body 20 is 0.01 to
It is better to set the range to 0.2 mm. This foil body 20 has good oxidation resistance and heat resistance.

【0010】前記実施例によれば、図3に示すように、
外板10の内壁側のセラミックファイバブロック9の内
部にステンレス製の箔体20が設けられるから、炉内か
らセラミックファイバブロック9を浸透する炉内ガスは
箔体20によって遮断されるから外板10に直接接触す
ることはなく外板10を侵食するのが防止される。この
ため、外板10の酸化が防止され、外板10の損傷や侵
食や腐蝕が確実に防止される。そのため、炉壁の構造体
が強化され、構造体の安全性が向上される。
According to the above embodiment, as shown in FIG.
Since the stainless steel foil body 20 is provided inside the ceramic fiber block 9 on the inner wall side of the outer plate 10, the gas in the furnace permeating the ceramic fiber block 9 from inside the furnace is cut off by the foil body 20. Erosion of the skin 10 without direct contact with the Therefore, oxidation of the outer panel 10 is prevented, and damage, erosion, and corrosion of the outer panel 10 are reliably prevented. Therefore, the structure of the furnace wall is strengthened, and the safety of the structure is improved.

【0011】また炉内ガス中の水分によって低温側の外
板付近では結露しやすいが、炉内ガス中の水分は箔体2
0によって遮断されるため、水分が外板10に接触しな
いので、鉄板である外板10が酸化されない。従って、
結露防止による外板10の酸化が防止され、防食性の良
好な炉壁構造体が得られる。前記実施例では、箔体20
の炉外側にセラミックファイバ21を設けたが、このセ
ラミックファイバ21に代えて耐火物煉瓦を設けてもよ
いことはもちろんである。またセラミックファイバ21
に代えてグラスファイバを用いることも可能である。さ
らには、セラミックファイバブロック9と外板10との
固定手段は前記実施例の場合はボルト、ナットを用いた
が、取付け手段はこれに限られない。
The moisture in the furnace gas tends to cause dew condensation in the vicinity of the low temperature side outer plate, but the moisture in the furnace gas does not
Since it is blocked by 0, moisture does not contact the outer plate 10, so the outer plate 10, which is an iron plate, is not oxidized. Therefore,
Oxidation of the outer panel 10 due to the prevention of dew condensation is prevented, and a furnace wall structure having good corrosion resistance is obtained. In the above embodiment, the foil 20
The ceramic fiber 21 is provided on the outside of the furnace. However, it goes without saying that a refractory brick may be provided instead of the ceramic fiber 21. The ceramic fiber 21
Alternatively, a glass fiber can be used. Further, the fixing means for fixing the ceramic fiber block 9 and the outer plate 10 uses bolts and nuts in the above embodiment, but the mounting means is not limited to this.

【0012】[0012]

【発明の効果】以上説明したように、本発明の焼成炉の
炉壁構造によると、炉内壁を構成するセラミックファイ
バの内部または外板の炉内壁側に炉内ガスが外板に直接
触れるのを防止する箔体を被覆する構成としたため、炉
壁を構成する外板の耐食性が向上されるので、炉の安全
性が高められるとともに、焼成すべき製品の品質不良の
発生が防止されるという効果がある。
As described above, according to the furnace wall structure of the firing furnace of the present invention, the furnace gas directly contacts the inside of the ceramic fiber constituting the furnace inner wall or the furnace inner wall side of the outer plate. The structure is such that the outer plate constituting the furnace wall is improved in corrosion resistance, so that the furnace safety is enhanced and the occurrence of quality defects in products to be fired is prevented. effective.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例によるシャトルキルンの炉壁を
示す部分断面図である。
FIG. 1 is a partial cross-sectional view illustrating a furnace wall of a shuttle kiln according to an embodiment of the present invention.

【図2】本発明の実施例によるシャトルキルンを示す断
面図である。
FIG. 2 is a sectional view showing a shuttle kiln according to an embodiment of the present invention.

【図3】本発明の実施例による炉壁厚さ方向の外板から
の炉内方向距離と炉壁温度との関係を示す特性図であ
る。
FIG. 3 is a characteristic diagram showing a relationship between a furnace wall temperature and a distance in a furnace wall direction from an outer plate in a furnace wall thickness direction according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 シャトルキルン 9 セラミックファイバブロック 10 外板 20 ガス遮断体(箔体) 21 セラミックファイバブロック DESCRIPTION OF SYMBOLS 1 Shuttle kiln 9 Ceramic fiber block 10 Outer plate 20 Gas barrier (foil) 21 Ceramic fiber block

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】炉内壁を構成するセラミックファイバブロ
ックと、炉外壁を構成する外板とからなる焼成炉であっ
て、 前記外板の少なくとも炉内壁側に焼成時の温度が300
℃〜600℃になる位置に炉内ガスが前記セラミックフ
ァイバブロックを浸透して前記外板に接触するのを遮断
するガス遮断体を設けたことを特徴とする焼成炉の炉壁
装置。
1. A firing furnace comprising a ceramic fiber block forming an inner wall of a furnace, and an outer plate forming an outer wall of the furnace, wherein a temperature at the time of firing is set at least on the inner wall side of the outer plate.
A furnace wall device for a sintering furnace, wherein a gas shut-off member is provided at a position where the temperature of the firing furnace reaches a temperature of from about 600C to about 600C to block the gas in the furnace from penetrating the ceramic fiber block and coming into contact with the outer plate.
JP3218308A 1991-08-29 1991-08-29 Furnace wall equipment for firing furnace Expired - Lifetime JP3040208B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3218308A JP3040208B2 (en) 1991-08-29 1991-08-29 Furnace wall equipment for firing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3218308A JP3040208B2 (en) 1991-08-29 1991-08-29 Furnace wall equipment for firing furnace

Publications (2)

Publication Number Publication Date
JPH0560468A JPH0560468A (en) 1993-03-09
JP3040208B2 true JP3040208B2 (en) 2000-05-15

Family

ID=16717810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3218308A Expired - Lifetime JP3040208B2 (en) 1991-08-29 1991-08-29 Furnace wall equipment for firing furnace

Country Status (1)

Country Link
JP (1) JP3040208B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011033251A (en) * 2009-07-31 2011-02-17 Shin-Nippon Thermal Ceramics Corp Fireproof lining using ceramic fiber block and method of mounting the ceramic fiber block
CN105403044A (en) * 2014-09-05 2016-03-16 广东松发陶瓷股份有限公司 Full-automatic rapid energy-saving shuttle kiln
JP6432234B2 (en) * 2014-09-16 2018-12-05 三菱ケミカル株式会社 Inorganic fiber insulation block manufacturing method
CN106225474B (en) * 2016-08-30 2018-12-21 京山新瑞达通用机器有限公司 A kind of indoor heavy oil furnace mechanism for blank heating

Also Published As

Publication number Publication date
JPH0560468A (en) 1993-03-09

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