JP2002327913A - Fire-resisting structure for protecting water pipe in incinerator with boiler and fire-proof tile - Google Patents
Fire-resisting structure for protecting water pipe in incinerator with boiler and fire-proof tileInfo
- Publication number
- JP2002327913A JP2002327913A JP2001133262A JP2001133262A JP2002327913A JP 2002327913 A JP2002327913 A JP 2002327913A JP 2001133262 A JP2001133262 A JP 2001133262A JP 2001133262 A JP2001133262 A JP 2001133262A JP 2002327913 A JP2002327913 A JP 2002327913A
- Authority
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- Japan
- Prior art keywords
- refractory
- temperature
- incinerator
- water pipe
- boiler
- 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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Links
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、たとえば、ごみ
などを焼却した際に生じる熱を利用して発電するボイラ
付き焼却炉において、ボイラの水管を耐火物により燃焼
ガス（炉内の高温の腐食性ガス）から保護する水管保護
用耐火構造、および、耐火タイルに係るものである。特
に、この発明は、炉内温度が高温化されたボイラ付き焼
却炉において、耐火物の耐久性が向上し、かつ、水管を
高温の燃焼ガスから確実に保護することができる水管保
護用耐火構造、および、耐火タイルに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator with a boiler for generating electricity by using heat generated when incinerating garbage or the like. And a fire-retardant structure for protecting water pipes, and fire-resistant tiles. In particular, the present invention relates to a refractory structure for protecting a water pipe in an incinerator with a boiler in which the temperature in the furnace is increased, the durability of the refractory can be improved, and the water pipe can be reliably protected from high-temperature combustion gas. , And fire-resistant tiles.
【０００２】[0002]
【従来の技術】（一般のボイラ付き焼却炉の説明）ボイ
ラ付き焼却炉は、一般に、図４に示すように、焼却炉１
と、ボイラ２とから構成されている。2. Description of the Related Art (Description of General Incinerator with Boiler) An incinerator with a boiler generally has an incinerator 1 as shown in FIG.
And a boiler 2.
【０００３】前記焼却炉１には、ごみを焼却するストー
カ３と、前記ストーカ３にごみを供給するフィーダ４
と、前記フィーダ４にごみを投入するホッパ５と、前記
ホッパ５に投入するごみを一旦収集するごみピット（図
示せず）などがそれぞれ装備されている。また、前記焼
却炉１の前記ストーカ３の真上には、二次空気供給部１
３が設けられている。[0003] The incinerator 1 includes a stoker 3 for incinerating the refuse and a feeder 4 for supplying the refuse to the stoker 3.
And a hopper 5 for feeding refuse into the feeder 4 and a refuse pit (not shown) for once collecting refuse to be fed into the hopper 5. In addition, immediately above the stoker 3 of the incinerator 1, a secondary air supply unit 1
3 are provided.
【０００４】前記ボイラ２は、蒸気ドラム６と、水ドラ
ム７と、前記蒸気ドラム６と前記水ドラム７との間に連
結された多数本のボイラチューブ８とから構成されてい
る。The boiler 2 comprises a steam drum 6, a water drum 7, and a number of boiler tubes 8 connected between the steam drum 6 and the water drum 7.
【０００５】前記ボイラ付き焼却炉は、前記焼却炉１に
おいてごみなどを焼却した際に発生する熱により、前記
ボイラ２において水が蒸気（過熱蒸気）となり、前記蒸
気がタービン（図示せず）を駆動して発電の仕事をす
る。[0005] In the incinerator with a boiler, water generated in the boiler 2 becomes steam (superheated steam) due to heat generated when incinerators and the like are incinerated in the incinerator 1, and the steam turns a turbine (not shown). Drive and do the work of power generation.
【０００６】前記ボイラ付き焼却炉は、前記焼却炉１の
火炉壁を高温の燃焼ガスから保護するためと、ボイラ効
率を向上させるために、火炉壁を水冷壁の水管９（図４
中斜線が施されている部分）で構築している。In the incinerator with a boiler, in order to protect the furnace wall of the incinerator 1 from high-temperature combustion gas and to improve the boiler efficiency, the furnace wall is connected to a water pipe 9 of a water cooling wall (FIG. 4).
(The part with the oblique line).
【０００７】前記水管９は、図５および図６に示すよう
に、多数本のボイラチューブ１０を平面に並べ、かつ、
隣り合う前記ボイラチューブ１０、１０同士を平面リブ
１１により連結してなるパネル構造をなすものである。As shown in FIGS. 5 and 6, the water pipe 9 has a number of boiler tubes 10 arranged in a plane and
A panel structure is formed by connecting the adjacent boiler tubes 10 and 10 with a plane rib 11.
【０００８】前記水管９のうち、前記ストーカ３の真上
の部分であって、焼却炉１の内側の面を定形耐火物１２
もしくは不定形耐火物（図示せず）で覆って、前記水管
９を燃焼ガス（高温の腐食性ガス）から保護している。
また、前記水管９の冷却作用により、前記定形耐火物１
２の前記焼却炉１内と対向する面（以下、炉表面と称す
る）の熱が前記定形耐火物１２の前記水管９と対向する
面（以下、水管面と称する）に伝達され、前記定形耐火
物１２の炉表面の酸化損傷が防止されている。The surface of the water pipe 9 directly above the stoker 3 and inside the incinerator 1 is fixed refractory 12
Alternatively, the water pipe 9 is protected from combustion gas (high-temperature corrosive gas) by covering it with an irregular-shaped refractory (not shown).
Further, the cooling action of the water pipe 9 causes the fixed refractory 1
2, the heat of the surface facing the inside of the incinerator 1 (hereinafter referred to as the furnace surface) is transmitted to the surface of the shaped refractory 12 facing the water pipe 9 (hereinafter referred to as the water pipe surface), Oxidation damage of the furnace surface of the object 12 is prevented.
【０００９】そして、前記耐火物（以下、定形耐火物１
２と称する）の材質および化学成分は、図２中のＮＯ．
４に示す。すなわち、前記定形耐火物１２の熱伝導率
は、ＪＩＳ規格のレーザフラッシュ法の測定で１４．０
ｋｃａｌ／ｍｈ°Ｃである。The refractory (hereinafter referred to as a fixed refractory 1)
2 are referred to as NO. 2 in FIG.
It is shown in FIG. That is, the thermal conductivity of the fixed refractory 12 was 14.0 as measured by a laser flash method according to JIS.
kcal / mh ° C.
【００１０】前記定形耐火物１２は、炭化ケイ素（Ｓｉ
Ｃ）を主成分とするものである。前記定形耐火物１２
は、図５および図６に示すように、２個の半円形部１
３、１３と、前記２個の半円形部１３、１３を連結する
連結部１４とからなる。The fixed refractory 12 is made of silicon carbide (Si)
C) as a main component. The fixed refractory 12
Are two semicircular portions 1 as shown in FIGS.
3 and 13 and a connecting portion 14 connecting the two semicircular portions 13 and 13.
【００１１】前記水管９と前記定形耐火物１２との相互
の対向面側に耐火充填接着剤としてのモルタル１８（図
中、点々が施された部分）を十分に塗布し、前記水管９
に前記定形耐火物１２を取付具１５で取り付ける。これ
により、前記水管９は、前記定形耐火物１２で覆われて
燃焼ガスから保護されることとなる。A mortar 18 (dotted portion in the figure) as a refractory filling adhesive is sufficiently applied to the mutually facing surfaces of the water pipe 9 and the fixed refractory 12, and the water pipe 9
Then, the fixed refractory 12 is attached with the fixture 15. As a result, the water pipe 9 is covered with the fixed refractory 12 and protected from the combustion gas.
【００１２】前記水管９に前記定形耐火物１２を覆う部
分としては、前記二次空気供給部１６、もしくは、ガス
混合位置１７から、燃焼ガス１９が上昇するまでの滞留
時間が約２秒間の位置２０までの範囲としている。The portion of the water pipe 9 that covers the fixed refractory 12 includes a position where the residence time until the combustion gas 19 rises from the secondary air supply unit 16 or the gas mixing position 17 is about 2 seconds. The range is up to 20.
【００１３】なお、前記範囲を焼却炉１内の二次燃焼域
下部（高温部）と称する。また、前記範囲より下流側
（燃焼ガス１９の流れる下流側）を焼却炉１内の二次燃
焼域上部（低温部）と称する。一方、前記ガス混合位置
１７は、燃焼ガスと二次空気とが混合する位置であっ
て、図４中、二次空気供給部１６を結ぶ点線にて示す。
また、前記燃焼ガス１９は、図４中、白抜き矢印にて示
す。さらに、前記滞留時間約２秒の位置２０は、図４
中、二点鎖線にて示す。The above range is referred to as a lower part (high temperature part) of the secondary combustion zone in the incinerator 1. Further, the downstream side (downstream side where the combustion gas 19 flows) from the above range is referred to as the upper part (low temperature part) of the secondary combustion zone in the incinerator 1. On the other hand, the gas mixing position 17 is a position where the combustion gas and the secondary air are mixed, and is indicated by a dotted line connecting the secondary air supply unit 16 in FIG.
The combustion gas 19 is indicated by a white arrow in FIG. Further, the position 20 where the residence time is about 2 seconds is shown in FIG.
Indicated by the middle and two-dot chain lines.
【００１４】[0014]
【発明が解決しようとする課題】ところが、近年、ごみ
の高カロリー化と、ダイオキシン対策により、前記焼却
炉１内の温度を高温度化（たとえば、酸素を豊富化した
ガスを前記二次空気供給部１６から前記焼却炉１内に供
給して前記焼却炉１内の温度を高温度化）する傾向にあ
る。すなわち、前記焼却炉１の出口温度が今までは約９
００°Ｃであったのが、近年では約１１００°Ｃ〜１２
００°Ｃまで上昇させている。However, in recent years, the temperature in the incinerator 1 has been increased by increasing the calories of the refuse and taking measures against dioxin (for example, by supplying oxygen-enriched gas to the secondary air). The temperature in the incinerator 1 is increased by supplying the incinerator 1 from the section 16). That is, the outlet temperature of the incinerator 1 has been about 9
In recent years, it has been about 1100 ° C to 12 ° C.
It has been raised to 00 ° C.
【００１５】このために、従来の水管保護用耐火構造で
は、前記定形耐火物１２自体の耐久性が短期間で劣化
し、ついには、前記水管９が燃焼ガスにより腐食する傾
向にある。すなわち、図３に示すように、従来の前記定
形耐火物１２は、雰囲気温度（°Ｃ）が約７００°Ｃを
超えると、酸化が開始され、雰囲気温度（°Ｃ）が約９
００°Ｃの場合には多少の酸化損傷が見られ、雰囲気温
度（°Ｃ）が約１１００°Ｃ〜１２００°Ｃに達する
と、酸化損傷が激しく見られる。このように、前記定形
耐火物１２が短期間で劣化することとなる。また、前記
滞留時間約２秒の位置２０から下流の前記定形耐火物１
２が覆われていない箇所の水管９も燃焼ガスの高温化に
より腐食する傾向にある。For this reason, in the conventional refractory structure for protecting water pipes, the durability of the fixed refractory 12 itself deteriorates in a short period of time, and finally the water pipe 9 tends to be corroded by the combustion gas. That is, as shown in FIG. 3, when the ambient temperature (° C.) exceeds about 700 ° C., oxidation of the conventional shaped refractory 12 starts and the ambient temperature (° C.) becomes about 9 ° C.
In the case of 00 ° C, some oxidative damage is observed, and when the ambient temperature (° C) reaches about 1100 ° C to 1200 ° C, oxidative damage is severely observed. Thus, the fixed refractory 12 deteriorates in a short period of time. Further, the fixed refractory 1 downstream from the position 20 where the residence time is about 2 seconds.
The water pipe 9 at a location where 2 is not covered also tends to corrode due to the high temperature of the combustion gas.
【００１６】この発明は、炉内温度が高温化されたボイ
ラ付き焼却炉において、耐火物の耐久性が向上し、か
つ、水管を高温の燃焼ガスから確実に保護することがで
きる水管保護用耐火構造、および、耐火タイルを提供す
ることを目的とする。According to the present invention, there is provided an incinerator with a boiler in which the temperature in the furnace is increased, the durability of the refractory is improved, and the refractory for protecting a water pipe can be reliably protected from a high-temperature combustion gas. It is intended to provide a structure and a refractory tile.
【００１７】[0017]
【課題を解決するための手段】上記の目的を達成するた
めに、請求項１にかかる発明は、ＪＩＳ規格のレーザフ
ラッシュ法の測定で、熱伝導率が２０ｋｃａｌ／ｍｈ°
Ｃ以上の材質からなる耐火物を使用することを特徴とす
る。In order to achieve the above-mentioned object, the invention according to claim 1 has a thermal conductivity of 20 kcal / mh ° measured by a laser flash method according to JIS.
It is characterized by using a refractory made of a material of C or higher.
【００１８】この結果、請求項１にかかる発明は、耐火
物の高熱伝導率により、耐火物の炉表面の熱が耐火物の
水管面に伝達し易い。このために、耐火物の炉表面の温
度を下げることができるので、耐火物の耐久性を向上さ
せることができる。たとえば、焼却炉内温度を約１１０
０°Ｃ〜１２００°Ｃに高温化しても、焼却炉内温度が
約９００°Ｃの場合と同等の耐火物の耐久性が得られ
る。しかも、耐火物の耐久性の向上に伴なって、前記耐
火物により水管を高温の燃焼ガスから確実に保護するこ
とができる。As a result, according to the first aspect of the present invention, the heat of the furnace surface of the refractory is easily transferred to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, if the temperature in the incinerator is about 110
Even if the temperature is raised to 0 ° C. to 1200 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high-temperature combustion gas by the refractory.
【００１９】また、請求項２にかかる発明は、フィーダ
の側壁を水管で構成し、前記水管の炉内側の面を耐火物
で覆って前記水管を燃焼ガスから保護し、前記耐火物と
しては、ＳｉＣを主成分とする定形耐火物であることを
特徴とする。る。The invention according to claim 2 is that the side wall of the feeder is constituted by a water pipe, and the inside of the furnace of the water pipe is covered with a refractory to protect the water pipe from combustion gas. It is a fixed refractory containing SiC as a main component. You.
【００２０】この結果、請求項２にかかる発明は、フィ
ーダの側壁を水管で構成するので、ボイラ効率が向上す
る。また、焼却炉内温度を高温度化しても、耐火物によ
り、フィーダの側壁の水管を高温の燃焼ガスから保護す
ることができる。As a result, in the invention according to claim 2, since the side wall of the feeder is constituted by the water pipe, the boiler efficiency is improved. Further, even if the temperature inside the incinerator is increased, the water pipe on the side wall of the feeder can be protected from the high-temperature combustion gas by the refractory.
【００２１】また、請求項３にかかる発明は、炉内の二
次燃焼域下部の高温部にＳｉＣを主成分とする定形耐火
物を覆い、炉内の二次燃焼域上部の低温部に高温高耐食
性金属で覆うことを特徴とする。Further, according to a third aspect of the present invention, a high-temperature portion at a lower portion of a secondary combustion zone in a furnace is covered with a fixed refractory containing SiC as a main component, and a high-temperature portion at a lower portion of an upper portion of the secondary combustion zone in the furnace is provided. It is characterized by being covered with a high corrosion resistant metal.
【００２２】この結果、請求項３にかかる発明は、炉内
の二次燃焼域上部の低温部が高温高耐食性金属で覆われ
ることにより、焼却炉内温度を高温度化しても、炉内の
二次燃焼域上部の低温部における水管を高温の燃焼ガス
から保護することができる。As a result, the invention according to claim 3 is characterized in that the lower part of the upper part of the secondary combustion zone in the furnace is covered with the high-temperature and high-corrosion-resistant metal, so that even if the temperature in the incinerator is raised, It is possible to protect the water pipe in the low temperature section above the secondary combustion zone from the high temperature combustion gas.
【００２３】また、請求項４にかかる発明は、水管のう
ち、定形耐火物を覆い施工が不可能な部分に、高温高耐
食性金属で覆い施工することを特徴とする。Further, the invention according to claim 4 is characterized in that a portion of the water pipe which covers the fixed refractory and cannot be constructed is covered with a high temperature and high corrosion resistant metal.
【００２４】この結果、請求項４にかかる発明は、水管
のうち定形耐火物を覆い施工が不可能な部分が、高温高
耐食性金属で覆われることにより、焼却炉内温度を高温
度化しても、水管のうち定形耐火物を覆い施工が不可能
な部分を高温の燃焼ガスから保護することができる。As a result, the invention according to claim 4 is characterized in that the part of the water pipe that covers the fixed refractory and cannot be constructed is covered with a high-temperature and high-corrosion-resistant metal, so that the temperature inside the incinerator can be increased. In addition, a portion of the water pipe that covers the fixed refractory and cannot be applied can be protected from high-temperature combustion gas.
【００２５】また、請求項５にかかる発明は、ＳｉＣが
９５ｗｔ％以上を主成分とし、かつ、ＪＩＳ規格のレー
ザフラッシュ法の測定で、熱伝導率が２０ｋｃａｌ／ｍ
ｈ°Ｃ以上の材質からなる耐火タイルを特徴とする。According to a fifth aspect of the present invention, there is provided the method according to the first aspect, wherein SiC has a main component of 95 wt% or more, and has a thermal conductivity of 20 kcal / m 2 measured by a laser flash method according to JIS.
It is characterized by refractory tiles made of a material of h ° C or higher.
【００２６】この結果、請求項５にかかる発明は、前記
請求項１にかかる発明と同様に、耐火物の高熱伝導率に
より、耐火物の炉表面の熱が耐火物の水管面に伝達し易
い。このために、耐火物の炉表面の温度を下げることが
できるので、耐火物の耐久性を向上させることができ
る。たとえば、焼却炉内温度を約１１００°Ｃ〜１２０
０°Ｃに高温化しても、焼却炉内温度が約９００°Ｃの
場合と同等の耐火物の耐久性が得られる。しかも、耐火
物の耐久性の向上に伴なって、前記耐火物により水管を
高温の燃焼ガスから確実に保護することができる。特
に、請求項５にかかる発明は、耐酸化性に優れ、かつ、
コストが安価である。As a result, in the invention according to claim 5, as in the invention according to claim 1, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. . For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100 ° C. to 120 ° C.
Even if the temperature is raised to 0 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high-temperature combustion gas by the refractory. In particular, the invention according to claim 5 has excellent oxidation resistance, and
Cost is low.
【００２７】また、請求項６にかかる発明は、ＳｉＣが
９０ｗｔ％以上と、Ｓｉ3 Ｎ4 が５ｗｔ％以上とを主成
分とし、かつ、ＪＩＳ規格のレーザフラッシュ法の測定
で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質から
なる耐火タイルを特徴とする。According to a sixth aspect of the present invention, the thermal conductivity is measured by a laser flash method according to JIS, with SiC being at least 90 wt% and Si 3 N 4 being at least 5 wt% as main components. It features a fire-resistant tile made of a material of 20 kcal / mh ° C or more.
【００２８】この結果、請求項６にかかる発明は、前記
請求項１にかかる発明と同様に、耐火物の高熱伝導率に
より、耐火物の炉表面の熱が耐火物の水管面に伝達し易
い。このために、耐火物の炉表面の温度を下げることが
できるので、耐火物の耐久性を向上させることができ
る。たとえば、焼却炉内温度を約１１００°Ｃ〜１２０
０°Ｃに高温化しても、焼却炉内温度が約９００°Ｃの
場合と同等の耐火物の耐久性が得られる。しかも、耐火
物の耐久性の向上に伴なって、前記耐火物により水管を
高温の燃焼ガスから確実に保護することができる。特
に、請求項６にかかる発明は、耐酸化性に優れている。As a result, in the invention according to claim 6, similarly to the invention according to claim 1, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. . For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100 ° C. to 120 ° C.
Even if the temperature is increased to 0 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high temperature combustion gas by the refractory. In particular, the invention according to claim 6 is excellent in oxidation resistance.
【００２９】また、請求項７にかかる発明は、ＳｉＣが
８５ｗｔ％以上と、Ｃが５ｗｔ％以上とを主成分とし、
かつ、ＪＩＳ規格のレーザフラッシュ法の測定で、熱伝
導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質からなる耐火
タイルを特徴とする。Further, the invention according to claim 7 is characterized in that the main components are 85% by weight or more of SiC and 5% by weight or more of C,
In addition, it is characterized by a refractory tile made of a material having a thermal conductivity of 20 kcal / mh ° C or more as measured by a laser flash method according to JIS.
【００３０】この結果、請求項７にかかる発明は、前記
請求項１にかかる発明と同様に、耐火物の高熱伝導率に
より、耐火物の炉表面の熱が耐火物の水管面に伝達し易
い。このために、耐火物の炉表面の温度を下げることが
できるので、耐火物の耐久性を向上させることができ
る。たとえば、焼却炉内温度を約１１００°Ｃ〜１２０
０°Ｃに高温化しても、焼却炉内温度が約９００°Ｃの
場合と同等の耐火物の耐久性が得られる。しかも、耐火
物の耐久性の向上に伴なって、前記耐火物により水管を
高温の燃焼ガスから確実に保護することができる。特
に、請求項７にかかる発明は、コストが非常に安価であ
る。As a result, in the invention according to claim 7, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory similarly to the invention according to claim 1. . For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100 ° C. to 120 ° C.
Even if the temperature is increased to 0 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high-temperature combustion gas by the refractory. In particular, the invention according to claim 7 is very inexpensive.
【００３１】[0031]
【発明の実施の形態】以下、この発明にかかるボイラ付
き焼却炉における水管保護用耐火構造および耐火タイル
の実施の形態のうちの１例を図１および図２を参照して
説明する。図中、図４〜図６と同符号は同一のものを示
す。なお、この実施形態によりこのボイラ付き焼却炉に
おける水管保護用耐火構造および耐火タイルが限定され
るものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a fireproof structure for protecting a water pipe and a fireproof tile in an incinerator with a boiler according to the present invention will be described below with reference to FIGS. 1 and 2. FIG. In the figure, the same reference numerals as those in FIGS. The embodiment does not limit the fire-resistant structure for water pipe protection and the fire-resistant tile in the incinerator with a boiler.
【００３２】（実施の形態の構成の説明）この実施の形
態においては、フィーダ４の側壁（図１中一点鎖線にて
囲まれた部分）２１を水管（水管９）で構成し、前記水
管の炉内側の面を後記する定形耐火物で覆う。(Explanation of the Configuration of the Embodiment) In this embodiment, the side wall (portion surrounded by the dashed line in FIG. 1) 21 of the feeder 4 is constituted by a water pipe (water pipe 9). The inside surface of the furnace is covered with the following refractory.
【００３３】また、この実施の形態においては、焼却炉
１内の二次燃焼域下部の高温部２２、すなわち、燃焼ガ
ス１９温度が約１１００°Ｃ〜１２００°Ｃの部分に後
記する定形耐火物を覆う。Further, in this embodiment, a fixed refractory, which will be described later, is disposed in a high-temperature portion 22 in the lower part of the secondary combustion zone in the incinerator 1, that is, a portion where the temperature of the combustion gas 19 is about 1100 ° C. to 1200 ° C. Cover.
【００３４】一方、前記焼却炉１内の二次燃焼域上部の
低温部２３、すなわち、燃焼ガス１９温度が約８００°
Ｃ〜１１００°Ｃの部分に高温高耐食性金属で覆う。On the other hand, the temperature of the low temperature part 23 in the upper part of the secondary combustion zone in the incinerator 1, that is, the temperature of the combustion gas 19 is about 800 °
Cover the portion between C and 1100 ° C with a high temperature and high corrosion resistant metal.
【００３５】さらに、この実施の形態においては、水管
９のうち、定形耐火物を覆い施工が不可能な部分、たと
えば、ノーズや開口部などの曲管部であって、焼却炉１
内側の面に、高温高耐食性金属で覆い施工する。前記高
温高耐食性金属は、インコネル、Ｎｉ基、Ｃｏ基などを
肉盛もしくは溶射により施工してなるものである。Further, in this embodiment, a portion of the water pipe 9 which covers the fixed refractory and cannot be constructed, for example, a curved pipe portion such as a nose or an opening, is used.
Cover the inside surface with a high temperature and high corrosion resistant metal. The high-temperature, high-corrosion-resistant metal is formed by building up Inconel, Ni-base, Co-base, or the like by overlaying or spraying.
【００３６】前記定形耐火物は、ＪＩＳ規格のレーザフ
ラッシュ法の測定で、熱伝導率が２０ｋｃａｌ／ｍｈ°
Ｃ以上の材質からなる定形耐火物を使用する。The refractory has a thermal conductivity of 20 kcal / mh ° as measured by a laser flash method according to JIS.
Use a fixed refractory made of C or higher material.
【００３７】具体的には、図２に示す。すなわち、図２
中のＮＯ．１は、ＳｉＣが９５ｗｔ％以上を主成分と
し、かつ、ＪＩＳ規格のレーザフラッシュ法の測定で、
熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質からなる
耐火タイル（耐火タイル１２）を使用する。FIG. 2 shows a specific example. That is, FIG.
NO. No. 1 is a measurement based on a laser flash method according to JIS standard in which SiC has 95% by weight or more as a main component,
A fire-resistant tile (fire-resistant tile 12) made of a material having a thermal conductivity of 20 kcal / mh ° C or more is used.
【００３８】また、図２中のＮＯ．２は、ＳｉＣが９０
ｗｔ％以上と、Ｓｉ3 Ｎ4 が５ｗｔ％以上とを主成分と
し、かつ、ＪＩＳ規格のレーザフラッシュ法の測定で、
熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質からなる
耐火タイル（耐火タイル１２）を使用する。Further, in FIG. 2 is 90% SiC
wt% or more and 5 wt% or more of Si 3 N 4 as main components, and are measured by a laser flash method according to JIS standard.
A fire-resistant tile (fire-resistant tile 12) made of a material having a thermal conductivity of 20 kcal / mh ° C or more is used.
【００３９】さらに、図２中のＮＯ．３は、ＳｉＣが８
５ｗｔ％以上と、Ｃが５ｗｔ％以上とを主成分とし、か
つ、ＪＩＳ規格のレーザフラッシュ法の測定で、熱伝導
率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質からなる耐火タ
イル（耐火タイル１２）を使用する。Further, in FIG. 3 is 8 for SiC
A refractory tile (refractory tile 12) composed mainly of 5 wt% or more and C of 5 wt% or more and having a thermal conductivity of 20 kcal / mh ° C or more measured by a laser flash method according to JIS. use.
【００４０】（実施の形態の作用効果の説明）この実施
の形態は、図２中のＮＯ．１の定形耐火物（耐火タイル
１２）、すなわち、ＳｉＣが９５ｗｔ％以上を主成分と
し、かつ、ＪＩＳ規格のレーザフラッシュ法の測定で、
熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質からなる
耐火タイル１２を使用するものである。(Explanation of Operation and Effect of Embodiment) This embodiment is similar to the embodiment shown in FIG. 1 refractory (fire-resistant tile 12), that is, the main component is 95% by weight or more of SiC, and measured by the laser flash method of JIS standard,
A refractory tile 12 made of a material having a thermal conductivity of 20 kcal / mh ° C or more is used.
【００４１】この結果、この実施の形態にかかる図２中
のＮＯ．１の定形耐火物（耐火タイル１２）は、耐火物
の高熱伝導率により、耐火物の炉表面の熱が耐火物の水
管面に伝達し易い。このために、耐火物の炉表面の温度
を下げることができるので、耐火物の耐久性を向上させ
ることができる。たとえば、焼却炉内温度を約１１００
°Ｃ〜１２００°Ｃに高温化しても、焼却炉内温度が約
９００°Ｃの場合と同等の耐火物の耐久性が得られる。
しかも、耐火物の耐久性の向上に伴なって、前記耐火物
により水管を高温の燃焼ガスから確実に保護することが
できる。As a result, as shown in FIG. In the fixed refractory (fireproof tile 12) of No. 1, heat from the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100
Even if the temperature is raised to a temperature of from about ° C to about 1200 ° C, durability of the refractory equivalent to a case where the temperature in the incinerator is about 900 ° C is obtained.
In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high temperature combustion gas by the refractory.
【００４２】特に、この実施の形態にかかる図２中のＮ
Ｏ．１の定形耐火物（耐火タイル１２）は、耐酸化性に
優れ、かつ、コストが安価である。In particular, according to this embodiment, N in FIG.
O. The fixed refractory (refractory tile 12) is excellent in oxidation resistance and inexpensive.
【００４３】また、この実施の形態は、図２中のＮＯ．
２の定形耐火物（耐火タイル１２）、すなわち、ＳｉＣ
が９０ｗｔ％以上と、Ｓｉ3 Ｎ4 が５ｗｔ％以上とを主
成分とし、かつ、ＪＩＳ規格のレーザフラッシュ法の測
定で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質か
らなる耐火タイル１２を使用するものである。This embodiment is similar to the embodiment shown in FIG.
2 refractory (fireproof tile 12), ie, SiC
Is 90 wt% or more and Si 3 N 4 is 5 wt% or more, and a refractory tile 12 made of a material having a thermal conductivity of 20 kcal / mh ° C. or more measured by a laser flash method of JIS standard. To use.
【００４４】この結果、この実施の形態にかかる図２中
のＮＯ．２の定形耐火物（耐火タイル１２）は、耐火物
の高熱伝導率により、耐火物の炉表面の熱が耐火物の水
管面に伝達し易い。このために、耐火物の炉表面の温度
を下げることができるので、耐火物の耐久性を向上させ
ることができる。たとえば、焼却炉内温度を約１１００
°Ｃ〜１２００°Ｃに高温化しても、焼却炉内温度が約
９００°Ｃの場合と同等の耐火物の耐久性が得られる。
しかも、耐火物の耐久性の向上に伴なって、前記耐火物
により水管を高温の燃焼ガスから確実に保護することが
できる。As a result, as shown in FIG. In the case of the fixed refractory (refractory tile 12), heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100
Even if the temperature is raised to a temperature of from about ° C to about 1200 ° C, durability of the refractory equivalent to a case where the temperature in the incinerator is about 900 ° C is obtained.
In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high temperature combustion gas by the refractory.
【００４５】特に、この実施の形態にかかる図２中のＮ
Ｏ．１の定形耐火物（耐火タイル１２）は、耐酸化性に
優れている。In particular, N in FIG.
O. The fixed refractory 1 (fireproof tile 12) has excellent oxidation resistance.
【００４６】さらに、この実施の形態は、図２中のＮ
Ｏ．３の定形耐火物（耐火タイル１２）、すなわち、Ｓ
ｉＣが８５ｗｔ％以上と、Ｃが５ｗｔ％以上とを主成分
とし、かつ、ＪＩＳ規格のレーザフラッシュ法の測定
で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質から
なる耐火タイル１２を使用するものである。Further, this embodiment is different from the embodiment shown in FIG.
O. 3 refractory (fireproof tile 12), that is, S
A refractory tile 12 is used whose main component is iC of 85 wt% or more and C of 5 wt% or more and whose thermal conductivity is 20 kcal / mh ° C. or more measured by a laser flash method according to JIS. Things.
【００４７】この結果、この実施の形態にかかる図２中
のＮＯ．３の定形耐火物（耐火タイル１２）は、耐火物
の高熱伝導率により、耐火物の炉表面の熱が耐火物の水
管面に伝達し易い。このために、耐火物の炉表面の温度
を下げることができるので、耐火物の耐久性を向上させ
ることができる。たとえば、焼却炉内温度を約１１００
°Ｃ〜１２００°Ｃに高温化しても、焼却炉内温度が約
９００°Ｃの場合と同等の耐火物の耐久性が得られる。
しかも、耐火物の耐久性の向上に伴なって、前記耐火物
により水管を高温の燃焼ガスから確実に保護することが
できる。As a result, as shown in FIG. In the fixed refractory (fireproof tile 12) of No. 3, heat from the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100
Even if the temperature is raised to a temperature of from about ° C to about 1200 ° C, durability of the refractory equivalent to a case where the temperature in the incinerator is about 900 ° C is obtained.
In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high temperature combustion gas by the refractory.
【００４８】特に、この実施の形態にかかる図２中のＮ
Ｏ．３の定形耐火物（耐火タイル１２）は、コストが非
常に安価である。In particular, N in FIG.
O. The fixed refractory (fireproof tile 12) of No. 3 is very inexpensive.
【００４９】特に、この実施の形態においては、フィー
ダ４の側壁２１を水管（水管９）で構成するので、ボイ
ラ効率が向上する。また、前記フィーダ４の側壁２１の
水管を、図２中のＮＯ．１もしくはＮＯ．２もしくはＮ
Ｏ．３の定形耐火物（耐火タイル１２）で覆うものであ
る。In particular, in this embodiment, since the side wall 21 of the feeder 4 is constituted by a water pipe (water pipe 9), the boiler efficiency is improved. The water pipe on the side wall 21 of the feeder 4 is designated by NO. 1 or NO. 2 or N
O. 3 is to be covered with a standard refractory (fireproof tile 12).
【００５０】この結果、この実施の形態は、焼却炉１内
の温度が約１１００°Ｃ〜１２００°Ｃの高温度化して
も、定形耐火物（耐火タイル１２）により、フィーダ４
の側壁２１の水管を高温の燃焼ガスから保護することが
できる。As a result, according to this embodiment, even if the temperature in the incinerator 1 is raised to about 1100 ° C. to 1200 ° C., the feeder 4 is formed by the fixed refractory (the refractory tile 12).
Can be protected from the high temperature combustion gas.
【００５１】また、この実施の形態においては、焼却炉
１内の二次燃焼域下部の高温部２２を図２中のＮＯ．１
およびＮＯ．２およびＮＯ．３の定形耐火物（耐火タイ
ル）で覆い、焼却炉１内の二次燃焼域上部の低温部２３
に高温高耐食性金属からなる不定形耐火物を覆うもので
ある。In this embodiment, the high-temperature portion 22 in the lower part of the secondary combustion zone in the incinerator 1 is designated by NO. 1
And NO. 2 and NO. 3 is covered with a fixed refractory (fireproof tile), and the low temperature part 23 in the upper part of the secondary combustion zone in the incinerator 1
To cover an irregular refractory made of a high-temperature, high-corrosion-resistant metal.
【００５２】この結果、この実施の形態は、焼却炉１内
の二次燃焼域上部の低温部２３が高温高耐食性金属から
なる不定形耐火物で覆われることにより、焼却炉１内の
温度が約１１００°Ｃ〜１２００°Ｃの高温度化して
も、焼却炉１内の二次燃焼域上部の低温部２３における
水管を高温の燃焼ガスから保護することができる。As a result, in this embodiment, the temperature in the incinerator 1 is reduced by covering the low-temperature portion 23 in the upper part of the secondary combustion zone in the incinerator 1 with the irregular refractory made of the high-temperature and high-corrosion-resistant metal. Even if the temperature is raised to about 1100 ° C. to 1200 ° C., the water pipe in the low temperature section 23 in the upper part of the secondary combustion zone in the incinerator 1 can be protected from high temperature combustion gas.
【００５３】さらに、この実施の形態においては、水管
のうち、定形耐火物を覆い施工が不可能な部分に、高温
高耐食性金属で覆い施工するものである。Further, in this embodiment, a portion of the water pipe which covers the fixed refractory and cannot be constructed is covered with a high temperature and high corrosion resistant metal.
【００５４】この結果、この実施の形態は、水管のうち
定形耐火物を覆い施工が不可能な部分が、高温高耐食性
金属で覆われることにより、焼却炉１内の温度が約１１
００°Ｃ〜１２００°Ｃの高温度化しても、水管のうち
定形耐火物を覆い施工が不可能な部分を高温の燃焼ガス
から保護することができる。As a result, in this embodiment, the temperature inside the incinerator 1 is reduced to about 11 by covering a portion of the water pipe which covers the fixed refractory and cannot be applied with the high temperature and high corrosion resistant metal.
Even if the temperature is increased to 00 ° C to 1200 ° C, a portion of the water pipe that covers the fixed refractory and cannot be applied can be protected from high-temperature combustion gas.
【００５５】（実施の形態以外の例）なお、前記実施の
形態においては、図２中のＮＯ．１およびＮＯ．２およ
びＮＯ．３の定形耐火物（耐火タイル）を使用したもの
であるが、この発明は、ＪＩＳ規格のレーザフラッシュ
法の測定で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の
材質からなる耐火物を使用しても良い。(Examples other than Embodiment) In the above embodiment, the NO. 1 and NO. 2 and NO. The present invention uses a refractory made of a material having a thermal conductivity of 20 kcal / mh ° C or more as measured by a laser flash method of JIS standard. May be.
【００５６】また、前記実施の形態においては、フィー
ダ４の側壁２１の水管、また、焼却炉１内の二次燃焼域
下部の高温部２２を、図２中のＮＯ．１もしくはＮＯ．
２もしくはＮＯ．３の定形耐火物（耐火タイル１２）で
覆うものであるが、この発明は、ＳｉＣを主成分とする
定形耐火物（たとえば、従来の定形耐火物）であっても
良い。In the above embodiment, the water pipe on the side wall 21 of the feeder 4 and the high temperature part 22 in the lower part of the secondary combustion zone in the incinerator 1 are connected to the NO. 1 or NO.
2 or NO. Although it is covered with the fixed refractory (fireproof tile 12) of No. 3, the present invention may be a fixed refractory containing SiC as a main component (for example, a conventional fixed refractory).
【００５７】[0057]
【発明の効果】以上から明らかなように、この発明にか
かるボイラ付き焼却炉における水管保護用耐火構造（請
求項１）によれば、ＪＩＳ規格のレーザフラッシュ法の
測定で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質
からなる耐火物を使用するものであるから、耐火物の炉
表面の熱が耐火物の水管面に伝達し易い。このために、
耐火物の炉表面の温度を下げることができるので、耐火
物の耐久性を向上させることができる。たとえば、焼却
炉内温度を約１１００°Ｃ〜１２００°Ｃに高温化して
も、焼却炉内温度が約９００°Ｃの場合と同等の耐火物
の耐久性が得られる。しかも、耐火物の耐久性の向上に
伴なって、前記耐火物により水管を高温の燃焼ガスから
確実に保護することができる。As is apparent from the above, according to the fire-resistant structure for protecting a water tube in an incinerator with a boiler according to the present invention (claim 1), the thermal conductivity measured by the laser flash method of JIS standard is 20 kcal. Since the refractory made of a material having a temperature of / mh ° C or more is used, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory. For this,
Since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, even if the temperature in the incinerator is raised to about 1100 ° C. to 1200 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high temperature combustion gas by the refractory.
【００５８】また、この発明にかかるボイラ付き焼却炉
における水管保護用耐火構造（請求項２）によれば、フ
ィーダの側壁を水管で構成するので、ボイラ効率が向上
する。また、焼却炉内温度を高温度化しても、耐火物に
より、フィーダの側壁の水管を高温の燃焼ガスから保護
することができる。According to the refractory structure for protecting a water pipe in an incinerator with a boiler according to the present invention (claim 2), the side wall of the feeder is formed of a water pipe, so that the boiler efficiency is improved. Further, even if the temperature inside the incinerator is increased, the water pipe on the side wall of the feeder can be protected from the high-temperature combustion gas by the refractory.
【００５９】また、この発明にかかるボイラ付き焼却炉
における水管保護用耐火構造（請求項３）によれば、炉
内の二次燃焼域下部の高温部にＳｉＣを主成分とする定
形耐火物を覆い、炉内の二次燃焼域上部の低温部に高温
高耐食性金属で覆うものである。この結果、請求項３に
かかる発明は、炉内の二次燃焼域上部の低温部が高温高
耐食性金属で覆われることにより、焼却炉内温度を高温
度化しても、炉内の二次燃焼域上部の低温部における水
管を高温の燃焼ガスから保護することができる。Further, according to the refractory structure for protecting a water pipe in an incinerator with a boiler according to the present invention (claim 3), a fixed refractory containing SiC as a main component is placed in a high temperature portion below a secondary combustion zone in the furnace. It covers the low-temperature part in the upper part of the secondary combustion zone in the furnace with high-temperature, high-corrosion-resistant metal. As a result, the second aspect of the present invention provides a secondary combustion chamber in which the low temperature portion in the upper part of the secondary combustion zone in the furnace is covered with a high-temperature and high-corrosion-resistant metal, thereby increasing the temperature in the incinerator. It is possible to protect the water pipe in the low temperature part in the upper part from the high temperature combustion gas.
【００６０】また、この発明にかかるボイラ付き焼却炉
における水管保護用耐火構造（請求項４）によれば、水
管のうち、定形耐火物を覆い施工が不可能な部分に、高
温高耐食性金属で覆い施工するものである。この結果、
請求項４にかかる発明は、水管のうち定形耐火物を覆い
施工が不可能な部分が、高温高耐食性金属からなる不定
形耐火物で覆われることにより、焼却炉内温度を高温度
化しても、水管のうち定形耐火物を覆い施工が不可能な
部分を高温の燃焼ガスから保護することができる。According to the refractory structure for protecting a water pipe in an incinerator with a boiler according to the present invention (claim 4), a portion of the water pipe that covers a fixed refractory and cannot be constructed with a high-temperature, high-corrosion resistant metal. It is to be covered. As a result,
The invention according to claim 4 is that even if the temperature inside the incinerator is raised, the part of the water pipe that covers the fixed refractory and cannot be constructed is covered with the irregular refractory made of a high-temperature and high-corrosion-resistant metal. In addition, a portion of the water pipe that covers the fixed refractory and cannot be applied can be protected from high-temperature combustion gas.
【００６１】また、この発明にかかるボイラ付き焼却炉
における水管保護用耐火構造に使用される耐火タイル
（請求項５）によれば、ＳｉＣが９５ｗｔ％以上を主成
分とし、かつ、ＪＩＳ規格のレーザフラッシュ法の測定
で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質から
なる耐火タイルを使用するものである。According to the refractory tile used for the water tube protection refractory structure in the incinerator with a boiler according to the present invention (claim 5), the JIS standard laser having 95% by weight or more of SiC as a main component. A refractory tile made of a material having a thermal conductivity of 20 kcal / mh ° C. or more as measured by the flash method is used.
【００６２】この結果、請求項５にかかる発明は、前記
請求項１にかかる発明と同様に、耐火物の高熱伝導率に
より、耐火物の炉表面の熱が耐火物の水管面に伝達し易
い。このために、耐火物の炉表面の温度を下げることが
できるので、耐火物の耐久性を向上させることができ
る。たとえば、焼却炉内温度を約１１００°Ｃ〜１２０
０°Ｃに高温化しても、焼却炉内温度が約９００°Ｃの
場合と同等の耐火物の耐久性が得られる。しかも、耐火
物の耐久性の向上に伴なって、前記耐火物により水管を
高温の燃焼ガスから確実に保護することができる。特
に、請求項５にかかる発明は、耐酸化性に優れ、かつ、
コストが安価である。As a result, in the invention according to the fifth aspect, similarly to the invention according to the first aspect, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory. . For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100 ° C. to 120 ° C.
Even if the temperature is raised to 0 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high-temperature combustion gas by the refractory. In particular, the invention according to claim 5 has excellent oxidation resistance, and
Cost is low.
【００６３】また、この発明にかかるボイラ付き焼却炉
における水管保護用耐火構造に使用される耐火タイル
（請求項６）によれば、ＳｉＣが９０ｗｔ％以上と、Ｓ
ｉ3 Ｎ 4 が５ｗｔ％以上とを主成分とし、かつ、ＪＩＳ
規格のレーザフラッシュ法の測定で、熱伝導率が２０ｋ
ｃａｌ／ｍｈ°Ｃ以上の材質からなる耐火タイルを使用
するものである。The incinerator with a boiler according to the present invention
Tile used for fire protection structure for water pipe protection in China
According to (claim 6), when the content of SiC is 90% by weight or more,
iThreeN FourIs 5 wt% or more as a main component and JIS
Measured by the standard laser flash method, the thermal conductivity is 20k
Use fire-resistant tiles made of cal / mh ° C or higher
Is what you do.
【００６４】この結果、請求項６にかかる発明は、前記
請求項１にかかる発明と同様に、耐火物の高熱伝導率に
より、耐火物の炉表面の熱が耐火物の水管面に伝達し易
い。このために、耐火物の炉表面の温度を下げることが
できるので、耐火物の耐久性を向上させることができ
る。たとえば、焼却炉内温度を約１１００°Ｃ〜１２０
０°Ｃに高温化しても、焼却炉内温度が約９００°Ｃの
場合と同等の耐火物の耐久性が得られる。しかも、耐火
物の耐久性の向上に伴なって、前記耐火物により水管を
高温の燃焼ガスから確実に保護することができる。特
に、請求項６にかかる発明は、耐酸化性に優れている。As a result, in the invention according to claim 6, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory, as in the invention of claim 1. . For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100 ° C. to 120 ° C.
Even if the temperature is raised to 0 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high-temperature combustion gas by the refractory. In particular, the invention according to claim 6 is excellent in oxidation resistance.
【００６５】また、この発明にかかるボイラ付き焼却炉
における水管保護用耐火構造に使用される耐火タイル
（請求項７）によれば、ＳｉＣが８５ｗｔ％以上と、Ｃ
が５ｗｔ％以上とを主成分とし、かつ、ＪＩＳ規格のレ
ーザフラッシュ法の測定で、熱伝導率が２０ｋｃａｌ／
ｍｈ°Ｃ以上の材質からなる耐火タイルを使用するもの
である。Further, according to the fire-resistant tile used in the fire-resistant structure for protecting the water pipe in the incinerator with a boiler according to the present invention (claim 7), the content of SiC is 85 wt% or more,
Is 5 wt% or more as a main component, and has a thermal conductivity of 20 kcal /
A refractory tile made of a material having a temperature of mh ° C or higher is used.
【００６６】この結果、請求項７にかかる発明は、前記
請求項１にかかる発明と同様に、耐火物の高熱伝導率に
より、耐火物の炉表面の熱が耐火物の水管面に伝達し易
い。このために、耐火物の炉表面の温度を下げることが
できるので、耐火物の耐久性を向上させることができ
る。たとえば、焼却炉内温度を約１１００°Ｃ〜１２０
０°Ｃに高温化しても、焼却炉内温度が約９００°Ｃの
場合と同等の耐火物の耐久性が得られる。しかも、耐火
物の耐久性の向上に伴なって、前記耐火物により水管を
高温の燃焼ガスから確実に保護することができる。特
に、請求項７にかかる発明は、コストが非常に安価であ
る。As a result, in the invention according to claim 7, the heat of the furnace surface of the refractory is easily transmitted to the water pipe surface of the refractory due to the high thermal conductivity of the refractory, as in the invention of claim 1. . For this reason, since the temperature of the furnace surface of the refractory can be lowered, the durability of the refractory can be improved. For example, when the temperature in the incinerator is about 1100 ° C. to 120 ° C.
Even if the temperature is increased to 0 ° C., the durability of the refractory equivalent to the case where the temperature in the incinerator is about 900 ° C. can be obtained. In addition, with the improvement of the durability of the refractory, the water pipe can be reliably protected from the high-temperature combustion gas by the refractory. In particular, the invention according to claim 7 is very inexpensive.
【図１】この発明のボイラ付き焼却炉における水管保護
用耐火構造および耐火タイルの実施の形態を示す焼却炉
の断面説明図である。FIG. 1 is an explanatory cross-sectional view of an incinerator showing an embodiment of a fireproof structure for protecting a water pipe and a fireproof tile in an incinerator with a boiler of the present invention.
【図２】この発明の耐火タイルと従来の耐火タイルの材
質および化学物質を示す説明図である。FIG. 2 is an explanatory view showing the materials and chemical substances of the refractory tile of the present invention and a conventional refractory tile.
【図３】従来の耐火タイルの酸化損傷と雰囲気温度の相
対関係を示すグラフである。FIG. 3 is a graph showing a relative relationship between oxidation damage of a conventional refractory tile and ambient temperature.
【図４】一般のボイラ付き燃焼炉を示す説明図である。FIG. 4 is an explanatory view showing a general combustion furnace with a boiler.
【図５】従来のボイラ付き焼却炉における水管保護用耐
火構造および耐火タイルを示す使用状態の一部正面図で
ある。FIG. 5 is a partial front view of a conventional incinerator with a boiler showing a fireproof structure for water tube protection and a fireproof tile.
【図６】図５におけるＶＩ―ＶＩ線断面図である。FIG. 6 is a sectional view taken along line VI-VI in FIG. 5;
【符号の説明】 １ 焼却炉 ２ ボイラ ３ ストーカ ４ フィーダ ５ ホッパ ６ 蒸気ドラム ７ 水ドラム ８ ボイラチューブ ９ 水管 １０ ボイラチューブ １１ リブ １２ 耐火タイル １３、１３ 半円形部 １４ 連結部 １５ 取付具 １６ 二次空気供給部 １７ ガス混合位置 １８ モルタル １９ 燃焼ガス ２０ 滞留時間約２秒の位置 ２１ 側壁 ２２ 高温部 ２３ 低温部[Description of Signs] 1 Incinerator 2 Boiler 3 Stalker 4 Feeder 5 Hopper 6 Steam Drum 7 Water Drum 8 Boiler Tube 9 Water Pipe 10 Boiler Tube 11 Rib 12 Refractory Tile 13, 13 Semicircular Part 14 Connection Part 15 Mounting Tool 16 Secondary Air supply part 17 Gas mixing position 18 Mortar 19 Combustion gas 20 Position of residence time about 2 seconds 21 Side wall 22 High temperature part 23 Low temperature part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川原 雄三 横浜市金沢区幸浦一丁目８番地１ 三菱重 工業株式会社横浜研究所内 (72)発明者 五島 忠八 横浜市金沢区幸浦一丁目８番地１ 三菱重 工業株式会社横浜研究所内 (72)発明者 池 稔 横浜市中区錦町12番地 三菱重工業株式会 社横浜製作所内 Ｆターム(参考） 3K065 AA01 AB01 AC01 BA07 FA06 FB08 FB13 4K051 AA00 AB03 HA14 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuzo Kawahara 1-8-1, Koura, Kanazawa-ku, Yokohama-shi Inside Yokohama Research Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Inventor Tadahachi Goto 1-8-1, Koura, Kanazawa-ku, Yokohama-shi (72) Inventor Minoru Ike 12 Nishikicho, Naka-ku, Yokohama-shi Mitsubishi Heavy Industries, Ltd.Yokohama Works F-term (reference) 3K065 AA01 AB01 AC01 BA07 FA06 FB08 FB13 4K051 AA00 AB03 HA14
Claims (7)
管の炉内側の面を耐火物で覆って前記水管を燃焼ガスか
ら保護するボイラ付き焼却炉において、 前記耐火物としては、ＪＩＳ規格のレーザフラッシュ法
の測定で、熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材
質からなることを特徴とするボイラ付き焼却炉における
水管保護用耐火構造。1. An incinerator with a boiler, wherein a water tube having a panel structure is used as a furnace wall, and a surface inside the furnace of the water tube is covered with a refractory material to protect the water tube from a combustion gas, wherein the refractory material is JIS standard. A fire-resistant structure for protecting water tubes in an incinerator with a boiler, characterized by being made of a material having a thermal conductivity of 20 kcal / mh ° C or more as measured by a laser flash method.
焼却物を供給するフィーダを有するボイラ付き焼却炉に
おいて、 前記フィーダの側壁を水管で構成し、前記水管の炉内側
の面を耐火物で覆って前記水管を燃焼ガスから保護し、
前記耐火物としては、ＳｉＣを主成分とする定形耐火物
であることを特徴とするボイラ付き焼却炉における水管
保護用耐火構造。2. An incinerator with a boiler having a water tube having a panel structure as a furnace wall and a feeder for supplying incineration material into the furnace, wherein a side wall of the feeder is formed of a water tube, and a surface inside the furnace of the water tube is refractory. Cover with water to protect the water pipe from combustion gases,
A refractory structure for protecting water tubes in an incinerator with a boiler, wherein the refractory is a fixed refractory containing SiC as a main component.
管の炉内側の面を耐火物で覆って前記水管を燃焼ガスか
ら保護するボイラ付き焼却炉において、 炉内の二次燃焼域下部の高温部における前記耐火物とし
ては、ＳｉＣを主成分とする定形耐火物であり、 炉内の二次燃焼域上部の低温部における前記耐火物とし
ては、高温高耐食性金属からなる、 ことを特徴とするボイラ付き焼却炉における水管保護用
耐火構造。3. An incinerator with a boiler, wherein a water tube having a panel structure is used as a furnace wall, and a surface inside the furnace of the water tube is covered with a refractory material to protect the water tube from a combustion gas. The refractory in the high temperature section is a fixed refractory containing SiC as a main component, and the refractory in the low temperature section above the secondary combustion zone in the furnace is made of a high temperature and high corrosion resistant metal. Refractory structure for protecting water pipes in incinerators with boilers.
が不可能な部分には、高温高耐食性金属で覆い施工する
ことを特徴とする請求項１または２または３に記載のボ
イラ付き焼却炉における水管保護用耐火構造。4. The incineration with a boiler according to claim 1, wherein the water pipe is covered with a high-temperature and high-corrosion-resistant metal, and is covered with a high-temperature and high-corrosion-resistant metal. Refractory structure for water tube protection in furnaces.
管保護用の定形耐火物としての耐火タイルであって、 前記耐火タイルは、ＳｉＣが９５ｗｔ％以上を主成分と
し、かつ、ＪＩＳ規格のレーザフラッシュ法の測定で、
熱伝導率が２０ｋｃａｌ／ｍｈ°Ｃ以上の材質からなる
ことを特徴とする耐火タイル。5. A refractory tile as a fixed refractory for protecting a water pipe used in an incinerator with a boiler, wherein the refractory tile contains 95% by weight or more of SiC as a main component, and is a JIS standard laser flash. In the measurement of the method,
A refractory tile comprising a material having a thermal conductivity of 20 kcal / mh ° C or more.
管保護用の定形耐火物としての耐火タイルであって、 前記耐火タイルは、ＳｉＣが９０ｗｔ％以上と、Ｓｉ3
Ｎ4 が５ｗｔ％以上とを主成分とし、かつ、ＪＩＳ規格
のレーザフラッシュ法の測定で、熱伝導率が２０ｋｃａ
ｌ／ｍｈ°Ｃ以上の材質からなることを特徴とする耐火
タイル。6. A refractory tile as a fixed refractory for protecting a water pipe used in an incinerator with a boiler, wherein the refractory tile contains 90 wt% or more of SiC and Si 3
N 4 is 5 wt% or more as a main component and has a thermal conductivity of 20 kca measured by a laser flash method according to JIS.
A fire-resistant tile comprising a material having a temperature of 1 / mh ° C or higher.
管保護用の定形耐火物としての耐火タイルであって、 前記耐火タイルは、ＳｉＣが８５ｗｔ％以上と、Ｃが５
ｗｔ％以上とを主成分とし、かつ、ＪＩＳ規格のレーザ
フラッシュ法の測定で、熱伝導率が２０ｋｃａｌ／ｍｈ
°Ｃ以上の材質からなることを特徴とする耐火タイル。7. A refractory tile as a fixed refractory for protecting water pipes used in an incinerator with a boiler, wherein the refractory tile has 85% by weight or more of SiC and 5% of C.
wt% or more as a main component and has a thermal conductivity of 20 kcal / mh as measured by a laser flash method according to JIS.
A fire-resistant tile comprising a material having a temperature of at least ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001133262A JP4298183B2 (en) | 2001-04-27 | 2001-04-27 | Refractory structure and tile for water tube protection in boiler incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001133262A JP4298183B2 (en) | 2001-04-27 | 2001-04-27 | Refractory structure and tile for water tube protection in boiler incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002327913A true JP2002327913A (en) | 2002-11-15 |
| JP4298183B2 JP4298183B2 (en) | 2009-07-15 |
Family
ID=18981147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001133262A Expired - Lifetime JP4298183B2 (en) | 2001-04-27 | 2001-04-27 | Refractory structure and tile for water tube protection in boiler incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4298183B2 (en) |
-
2001
- 2001-04-27 JP JP2001133262A patent/JP4298183B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP4298183B2 (en) | 2009-07-15 |
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