JPH0345119Y2 - - Google Patents
Info
- Publication number
- JPH0345119Y2 JPH0345119Y2 JP5392585U JP5392585U JPH0345119Y2 JP H0345119 Y2 JPH0345119 Y2 JP H0345119Y2 JP 5392585 U JP5392585 U JP 5392585U JP 5392585 U JP5392585 U JP 5392585U JP H0345119 Y2 JPH0345119 Y2 JP H0345119Y2
- Authority
- JP
- Japan
- Prior art keywords
- bricks
- furnace wall
- sic
- clinker
- furnace
- 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
Links
- 239000011449 brick Substances 0.000 claims description 54
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 21
- 229910010271 silicon carbide Inorganic materials 0.000 description 20
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052918 calcium silicate Inorganic materials 0.000 description 3
- 239000000378 calcium silicate Substances 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- 239000011490 mineral wool Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、例えば、ごみ焼却炉、溶融炉等の炉
壁に適用され、炉壁内面へのクリンカの付着を防
止して炉の連続運転を可能にした炉壁構造の改良
に係る。[Detailed description of the invention] [Industrial application field] The invention is applied to the furnace walls of waste incinerators, melting furnaces, etc., for example, and prevents clinker from adhering to the inner surface of the furnace wall, thereby preventing continuous operation of the furnace. This relates to improvements to the furnace wall structure that made this possible.
従来のごみ焼却炉等の炉壁構造は，第３図に示
すように，内面に粘土質レンガ又は高アルミナレ
ンガが耐火レンガ１１として用いられ，その外側
に断熱レンガ５を設置し，更に外側には耐熱度の
低い断熱材（ケイ酸カルシウム８又は岩綿９）が
コストダウンのために用いられている。
As shown in Fig. 3, the conventional furnace wall structure of a garbage incinerator uses clay bricks or high alumina bricks as refractory bricks 11 on the inner surface, and insulating bricks 5 are installed on the outside. In order to reduce costs, a heat insulating material with low heat resistance (calcium silicate 8 or rock wool 9) is used.
なお，第３図中，６は炉の外面に形成する鉄皮
７に固着された引張アンカで，耐火レンガ１１の
脱落を防止する。 In FIG. 3, reference numeral 6 denotes a tension anchor fixed to a steel shell 7 formed on the outer surface of the furnace to prevent the refractory bricks 11 from falling off.
しかし，従来のごみ焼却炉では，燃焼条件によ
つては第３図に示すように，炉壁１にクリンカ２
が多量に付着し炉容積が減少し，燃焼性能が低下
することがある。原因としては次の現象によると
考えられている。
However, in conventional waste incinerators, depending on the combustion conditions, clinker is attached to the furnace wall 1 as shown in Figure 3.
A large amount of fuel may adhere to the furnace, reducing the furnace volume and reducing combustion performance. The cause is thought to be the following phenomenon.
近年ごみ中にプラスチツクフイルム等が増加
し，炉内温度が上昇傾向にある。このため燃焼残
渣が炉内を飛行中に上記高温雰囲気に曝され表面
が溶融し壁面にクリンカ（容着灰）として付着す
る。この場合，クリンカ中のSiO2，Al2O3などが
粘土質レンガのバインダ（セメントのようなもの
でとけ易い。）と反応して，結合するため炉壁内
面のレンガに付着しやすいと考えられる。 In recent years, there has been an increase in the amount of plastic film, etc. in garbage, and the temperature inside the furnace is on the rise. For this reason, the combustion residue is exposed to the high-temperature atmosphere while flying through the furnace, and its surface melts and adheres to the wall surface as clinker (adhered ash). In this case, it is thought that SiO 2 , Al 2 O 3 , etc. in the clinker react with the binder of the clay bricks (similar to cement and easily dissolves) and bond, which makes them likely to adhere to the bricks on the inner surface of the furnace wall. It will be done.
従つて，燃焼性能確保の対策として２〜３ケ月
に一度炉を止めて，クリンカを除去しているのが
現状である。炉を止めるには炉内耐火材が熱衝撃
に弱いために除冷および除熱を実施する。そのた
めかなりの日数と灯油等の燃料費が掛かる。 Therefore, as a measure to ensure combustion performance, the current situation is to shut down the furnace once every two to three months and remove the clinker. To shut down the furnace, gradual cooling and heat removal must be carried out as the refractory material inside the furnace is susceptible to thermal shock. Therefore, it takes a considerable number of days and costs for fuel such as kerosene.
一方クリンカ除去作業もクリンカが強固に耐火
レンガに付着しているため，長時間を必要とす
る。 On the other hand, clinker removal work requires a long time because the clinker is firmly attached to the refractory bricks.
更に，スクレーパ３などを用いた作業中，第２
図中に破線で示すようにレンガが破損することが
多く数回のクリンカ除去を経ると耐火レンガを更
新しなければならない。 Furthermore, during work using scraper 3, etc., the second
As shown by the broken line in the figure, the bricks often break, and the refractory bricks must be replaced after several clinker removals.
本考案は，上記問題点を解消し，次の各事項を
達成することを目的とする。 The present invention aims to solve the above problems and achieve the following items.
○イ クリンカ除去を年１回程度にして炉の稼動率
を向上する。○I Improve the operating rate of the furnace by removing clinker about once a year.
○ロ クリンカ除去を不要とするか，クリンカ除去
作業を容易にする。○B Eliminate the need for clinker removal or make clinker removal work easier.
○ハ 耐火レンガのクリンカ除去による損傷をなく
す。○C Eliminate damage caused by clinker removal from refractory bricks.
上記目的達成のため，本考案は，炉壁の外殻面
に固着した引張アンカで炉壁の内面を構成する断
熱レンガを固定している炉壁構造において，炉壁
の最内面部分をSiC製レンガで構成するととも
に，少なくとも前記引張アンカの周囲は断熱レン
ガを配置し，同SiC製レンガと同断熱レンガとを
互いに対向する側に形成したフツク形状により係
合させたことを特徴とする炉壁構造を提案する。
To achieve the above objectives, the present invention has developed a furnace wall structure in which the insulating bricks constituting the inner surface of the furnace wall are fixed with tension anchors fixed to the outer shell surface of the furnace wall, and the innermost part of the furnace wall is made of SiC. A furnace wall made of bricks, insulating bricks are arranged at least around the tension anchor, and the SiC bricks and the insulating bricks are engaged by a hook shape formed on opposite sides. Suggest a structure.
本考案の炉壁構造において，SiC製レンガは加
熱されると，次の反応式によりCO2を発生する。
In the furnace wall structure of the present invention, when SiC bricks are heated, they generate CO 2 according to the following reaction equation.
SiC＋O2→SiO2＋CO2↑
このためクリンカとSiC製レンガの付着面は，
CO2による気泡のために軽石状になる。ここが強
度的に弱いため，更にクリンカが付着するとクリ
ンカ自重により付着面ではがれて，クリンカが脱
落する。このためクリンカ除去作業が不要とな
る。 SiC＋O 2 →SiO 2 ＋CO 2 ↑ Therefore, the adhesion surface of clinker and SiC brick is
It becomes pumice-like due to bubbles caused by CO2 . Since this is weak in strength, if more clinker adheres, it will peel off at the adhesion surface due to the clinker's own weight, and the clinker will fall off. This eliminates the need for clinker removal work.
SiC製レンガは熱伝導率が高いため，引張アン
カの周囲に配置し直接引張アンカで支持すると，
引張アンカが高温となり強度的に耐えられなくな
るとともに，炉壁の外殻面に熱が伝達して高温と
なり，断熱構造として成立しない。 SiC bricks have high thermal conductivity, so if they are placed around a tension anchor and directly supported by the tension anchor,
The tension anchor becomes so hot that it cannot withstand it in terms of strength, and the heat is transferred to the outer shell surface of the furnace wall, resulting in a high temperature that does not work as an insulating structure.
そのため，引張アンカの周囲は断熱レンガを配
置し，その内側にSiC製レンガを配置して，断熱
レンガとSiC製レンガとを互いに対向する側に形
成したフツク形状により係合させてSiC製レンガ
の脱落を防止している。 Therefore, insulating bricks are placed around the tension anchor, and SiC bricks are placed inside of the insulating bricks, and the insulating bricks and SiC bricks are engaged with each other using hook shapes formed on opposite sides of the SiC bricks. Prevents it from falling off.
引張アンカの周囲以外の炉壁は，上記のように
断熱レンガとSiC製レンガとを組み合せた構造と
してもよいし，あるいはSiC製レンガのみを配置
してもよい。しかしSiC製レンガのみを配置する
場合は，炉壁の外殻面とSiC製レンガとの間に何
らかの断熱材を配置して断熱性能を保持する必要
がある。 The furnace wall other than the area around the tension anchor may have a structure made of a combination of insulation bricks and SiC bricks as described above, or only SiC bricks may be arranged. However, when only SiC bricks are placed, it is necessary to maintain insulation performance by placing some kind of heat insulating material between the outer shell surface of the furnace wall and the SiC bricks.
次に本考案構造の一実施例を図面に基づいて説
明する。
Next, one embodiment of the structure of the present invention will be described based on the drawings.
第１図において，本炉壁１は，鉄皮７に引張ア
ンカ６が固着され，鉄皮７の内側に岩綿９および
ケイ酸カルシウム８が配置されているのは第１図
に示す従来の炉壁構造と同一であるが，炉壁１の
最内面に炭化ケイ素（SiC）製のレンガ４を配置
し，引張アンカ６の周囲のみ断熱レンガ５を配置
している。また断熱レンガ５の内面に接する部分
にはフツク形状4bをもつSiC製異形小型レンガ４
ａが配置され，断熱レンガ５に設けられたフツク
形状5bと互いに組み合わされている。 In FIG. 1, the main furnace wall 1 has a tension anchor 6 fixed to a steel shell 7, and rock wool 9 and calcium silicate 8 are arranged inside the steel shell 7, unlike the conventional furnace wall 1 shown in FIG. Although the structure is the same as that of the furnace wall, silicon carbide (SiC) bricks 4 are placed on the innermost surface of the furnace wall 1, and insulation bricks 5 are placed only around the tension anchors 6. In addition, the SiC irregularly shaped small brick 4 has a hook shape 4b in the part that contacts the inner surface of the insulating brick 5.
a is arranged and combined with a hook shape 5b provided on the heat insulating brick 5.
本炉壁構造においては，SiC製レンガ４はクリ
ンカが付着しにくく，また付着してもレンガ表面
が反応して，もろくなり，クリンカの自重によつ
て落下する。このためクリンカ除去作業が不要と
なる。 In this furnace wall structure, clinker is difficult to adhere to the SiC bricks 4, and even if clinker does adhere, the brick surface reacts, becomes brittle, and falls under the weight of the clinker. This eliminates the need for clinker removal work.
第２図は本考案構造の別の実施例を示す。本実
施例では，炉壁の内側部分を引張アンカ６の配置
以外もすべて断熱レンガ５と異形小型レンガ４ａ
を配置している。 FIG. 2 shows another embodiment of the inventive structure. In this embodiment, except for the arrangement of the tension anchor 6, the inner part of the furnace wall is entirely covered with insulation bricks 5 and irregularly shaped small bricks 4a.
are placed.
SiC製レンガは高価であるため，本実施例のよ
うに普通耐火レンガ寸法（230×114×65mm）より
小型の異形小型レンガ４ａ（例えば115×114×65
mm）を用いるため前記実施例よりコストを低減で
きる。 Since SiC bricks are expensive, we used irregularly shaped small bricks 4a (for example, 115 x 114 x 65
mm), the cost can be reduced compared to the previous embodiment.
以上のように，本考案の炉壁構造によれば，炉
壁の外殻面に固着した引張アンカで炉壁の内面を
構成する断熱レンガを固定している炉壁構造にお
いて，炉壁の最内面部分をSiC製レンガで構成す
るとともに，少なくとも前記引張アンカの周囲は
断熱レンガを配置し，同SiC製レンガと同断熱レ
ンガとを互いに対向する側に形成したフツク形状
により係合させたことにより，クリンカが炉壁内
面に付着すると，クリンカの自重により付着面が
剥れてクリンカが自然に脱落するので，クリンカ
の除去作業が不要となる。
As described above, according to the furnace wall structure of the present invention, in a furnace wall structure in which the insulating bricks constituting the inner surface of the furnace wall are fixed with tension anchors fixed to the outer shell surface of the furnace wall, The inner surface is made of SiC bricks, and at least a heat insulating brick is arranged around the tension anchor, and the SiC brick and the heat insulating brick are engaged by hook shapes formed on opposite sides. When clinker adheres to the inner surface of the furnace wall, the clinker's own weight causes the adhering surface to peel off and fall off naturally, making clinker removal unnecessary.
そのため，炉を停止することなく連続運転が可
能となり，炉の停止による不利益を被むることが
なくなる。 Therefore, continuous operation is possible without stopping the furnace, and there is no disadvantage caused by stopping the furnace.
第１図および第２図は本考案による炉壁構造の
第１および第２実施例を示す断面図，第３図は従
来の炉壁構造を示す断面図である。
１……炉壁、４……SiC製レンガ、４ａ……
SiC製異形小型レンガ、４ｂ……フツク形状、５
……断熱レンガ、５ｂ……フツク形状、６……引
張アンカ、７……鉄皮、８……ケイ酸カルシウ
ム、９……岩綿。
1 and 2 are sectional views showing first and second embodiments of the furnace wall structure according to the present invention, and FIG. 3 is a sectional view showing a conventional furnace wall structure. 1... Furnace wall, 4... SiC brick, 4a...
SiC irregularly shaped small brick, 4b...hook shape, 5
...Insulating brick, 5b...Hook shape, 6...Tension anchor, 7...Iron shell, 8...Calcium silicate, 9...Rock wool.
Claims (1)
面を構成する断熱レンガを固定している炉壁構造
において、炉壁の最内面部分をSiC製レンガで構
成するとともに、少なくとも前記引張アンカの周
囲は断熱レンガを配置し、同SiC製レンガと同断
熱レンガとを互いに対向する側に形成したフツク
形状により係合させたことを特徴とする炉壁構
造。 In a furnace wall structure in which insulating bricks constituting the inner surface of the furnace wall are fixed with tension anchors fixed to the outer shell surface of the furnace wall, the innermost part of the furnace wall is composed of SiC bricks, and at least the tension anchors A furnace wall structure characterized in that insulating bricks are arranged around the periphery, and the SiC bricks and the insulating bricks are engaged by a hook shape formed on opposite sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5392585U JPH0345119Y2 (en) | 1985-04-11 | 1985-04-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5392585U JPH0345119Y2 (en) | 1985-04-11 | 1985-04-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61170999U JPS61170999U (en) | 1986-10-23 |
| JPH0345119Y2 true JPH0345119Y2 (en) | 1991-09-24 |
Family
ID=30575234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5392585U Expired JPH0345119Y2 (en) | 1985-04-11 | 1985-04-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345119Y2 (en) |
-
1985
- 1985-04-11 JP JP5392585U patent/JPH0345119Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61170999U (en) | 1986-10-23 |
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