JPH0861636A - Fluidized bed incinerator - Google Patents

Fluidized bed incinerator

Info

Publication number
JPH0861636A
JPH0861636A JP20121794A JP20121794A JPH0861636A JP H0861636 A JPH0861636 A JP H0861636A JP 20121794 A JP20121794 A JP 20121794A JP 20121794 A JP20121794 A JP 20121794A JP H0861636 A JPH0861636 A JP H0861636A
Authority
JP
Japan
Prior art keywords
air
combustion
combustion chamber
gas
secondary combustion
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
Application number
JP20121794A
Other languages
Japanese (ja)
Other versions
JP3014279B2 (en
Inventor
Masayuki Ishikawa
昌幸 石川
Junichi Sano
順一 佐野
Seiichi Nakai
誠一 中井
Masamichi Takahashi
昌道 高橋
Takeshi Matsui
健 松井
Hideki Kazahaya
秀樹 風早
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.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
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
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP6201217A priority Critical patent/JP3014279B2/en
Publication of JPH0861636A publication Critical patent/JPH0861636A/en
Application granted granted Critical
Publication of JP3014279B2 publication Critical patent/JP3014279B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

PURPOSE: To perform a sufficient oxidization and incineration of carbon monoxide and to restrict an amount of inclusion of carbon monoxide contained in combustion discharged gas by a method wherein a throat part having a substantial rectangular section is formed between a primary combustion chamber and a secondary combustion chamber. CONSTITUTION: Items to be ignited fed from a dust feeding port 6 into a primary combustion chamber A are dropped into a fluidized bed material S fluidized with dispersion air injected from a dispersion air opening 3, super-heated, burned and the combustion gas is lifted up and directed toward a throat part 11. High speed secondary combustion air H1 is fed from a first secondary-air nozzle 12 until it reaches the throat part 11 so as to form a turbulence flow. Then, at the throat part 11, since secondary combustion air H2 is supplied uniformly from a nozzle hole 13d of a second secondary air nozzle 13 in a direction crossing with a combustion gas flow and in the longitudinal direction, almost of all the combustible items are burned. Accordingly, almost of carbon monoxide contained in the combustion gas is burned to become carbon dioxide and then it is discharged together with the discharged gas.

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、都市ごみや産業廃棄物
を焼却する流動床式焼却炉で、特に排ガス中の一酸化炭
素を低減できるものに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluidized bed type incinerator for incinerating municipal solid waste and industrial wastes, and more particularly to a fluidized bed incinerator capable of reducing carbon monoxide in exhaust gas.

【0002】[0002]

【従来の技術】従来、都市ごみや産業廃棄物などの可燃
性の有機廃棄物を焼却するために、流動床式の焼却炉が
使用されている。この焼却炉は、たとえば図4に示すよ
うに、立型円筒状の炉本体1の底部には一次燃焼室Aが
設けられており、この一次燃焼室Aは、底部中心で層材
Sおよび焼却灰を排出する排出口2の周部に、分散用空
気孔3が多数形成され、分散空気口4から分散空気室5
に供給された分散用空気がこれら分散用空気孔3を介し
て噴出されて層材Sが流動化され、給塵口6から投入さ
れた焼却物を層材Sで加熱焼却するように構成されてい
る。7はこの一次燃焼室Aに臨んで設けられた立上用バ
ーナである。この一次燃焼室Aの直上部には、燃焼ガス
中に二次燃焼用空気を吹き込んで、燃焼ガス中の可燃
分、とくに一酸化炭素を酸化燃焼させて二酸化炭素とし
排出する二次燃焼室Bが設けられており、二次燃焼室B
の入口で給塵口6の上部には、燃焼ガス中に二次燃焼用
空気を吹き込む1本の二次空気ノズル8が設けられてい
る。9は炉本体1の頂部に形成されたガス排出口であ
る。また、図5に示す流動床式の焼却炉では、燃焼ガス
中に複数段に分けて二次燃焼用空気を吹き込む二次空気
ノズル8A〜8Dが設けられたものもあった。
2. Description of the Related Art Conventionally, a fluidized bed type incinerator has been used to incinerate combustible organic waste such as municipal solid waste and industrial waste. In this incinerator, for example, as shown in FIG. 4, a primary combustion chamber A is provided at the bottom of a vertical cylindrical furnace body 1, and this primary combustion chamber A has a layer material S and incineration at the bottom center. A large number of dispersion air holes 3 are formed in the periphery of the discharge port 2 for discharging ash, and the dispersion air port 4 to the dispersion air chamber 5
The air for dispersion supplied to the above is jetted out through the air holes 3 for dispersion, the layer material S is fluidized, and the incineration material introduced from the dust inlet 6 is heated and incinerated by the layer material S. ing. Reference numeral 7 is a start-up burner provided so as to face the primary combustion chamber A. Immediately above the primary combustion chamber A, a secondary combustion chamber B in which secondary combustion air is blown into the combustion gas to oxidize and burn combustible components, particularly carbon monoxide, in the combustion gas to form carbon dioxide Is installed in the secondary combustion chamber B
A secondary air nozzle 8 for injecting secondary combustion air into the combustion gas is provided above the dust inlet 6 at the inlet. Reference numeral 9 is a gas discharge port formed at the top of the furnace body 1. Further, some fluidized bed type incinerators shown in FIG. 5 were provided with secondary air nozzles 8A to 8D for injecting secondary combustion air into the combustion gas in a plurality of stages.

【0003】[0003]

【発明が解決しようとする課題】しかし、上記流動床式
の焼却炉では、一般に排ガスの同伴による層材の炉外へ
の飛散を防止するため、燃焼ガスの空塔速度(排出速
度)を比較的遅く設定している。また、直状に形成され
た円筒状の炉本体1内では、燃焼ガスが上方に真っ直ぐ
立上り、空塔速度の遅いことと相まって二次空気ノズル
8,8A〜8Dから噴射される二次燃焼用空気との混合
が不十分になりやすく、一酸化炭素を酸化燃焼が不十分
で、燃焼排ガス中に含まれる一酸化炭素量が多くなると
いう問題があった。
However, in the above fluidized bed type incinerator, in general, in order to prevent the layer material from scattering outside the furnace due to the entrainment of exhaust gas, the superficial velocity (exhaust velocity) of the combustion gas is compared. It is set late. Further, in the cylindrical furnace body 1 formed in a straight shape, the combustion gas rises straight upward, and the superficial velocity is slow, which is combined with the secondary air nozzles 8 and 8A to 8D for secondary combustion. There is a problem that mixing with air is likely to be insufficient, oxidative combustion of carbon monoxide is insufficient, and the amount of carbon monoxide contained in the combustion exhaust gas increases.

【0004】本発明は、上記問題点を解決して一酸化炭
素を充分に酸化燃焼させて、燃焼排ガス中の一酸化炭素
含有量を大幅に抑制することができる流動床式焼却炉を
提供することを目的とする。
The present invention provides a fluidized bed incinerator which solves the above problems and can sufficiently oxidize and burn carbon monoxide to significantly reduce the carbon monoxide content in flue gas. The purpose is to

【0005】[0005]

【課題を解決するための手段】上記問題点を解決するた
めに本発明は、立型円筒状炉本体の底部に、層材を流動
化させて焼却物を燃焼させる一次燃焼室が配置されると
ともに、炉本体の上部に、燃焼ガス中に吹き込まれた二
次燃焼用空気により燃焼ガスを二次燃焼させる二次燃焼
室が設けられた流動床式焼却炉において、一次燃焼室と
二次燃焼室の間に、略長方形断面の絞り部を形成したも
のである。
SUMMARY OF THE INVENTION In order to solve the above problems, according to the present invention, a primary combustion chamber for fluidizing a layer material and burning an incinerated material is arranged at the bottom of a vertical cylindrical furnace body. At the same time, in a fluidized bed incinerator with a secondary combustion chamber for secondary combustion of the combustion gas by the secondary combustion air blown into the combustion gas in the upper part of the furnace body, the primary combustion chamber and the secondary combustion chamber A narrowed portion having a substantially rectangular cross section is formed between the chambers.

【0006】また上記構成に加えて、燃焼ガス中に二次
燃焼用空気を供給する二次空気ノズルを、絞り部の下部
に配置されて絞り部の長辺方向と直交する横方向に二次
燃焼用空気を噴射する第1の二次空気ノズルと、前記絞
り部に配置されて燃焼ガスを横断する方向に二次燃焼用
空気を噴射する第2の二次空気ノズルとで構成したもの
である。
In addition to the above structure, a secondary air nozzle for supplying secondary combustion air into the combustion gas is disposed in the lower portion of the throttle portion and is secondary in the lateral direction orthogonal to the long side direction of the throttle portion. It is composed of a first secondary air nozzle for injecting combustion air and a second secondary air nozzle for injecting secondary combustion air in a direction that crosses the combustion gas and is arranged in the throttle portion. is there.

【0007】さらに上記構成の第1の二次空気ノズルを
1本としたものである。
Further, the first secondary air nozzle having the above-mentioned configuration is one.

【0008】[0008]

【作用】上記構成において、円形断面の一次燃焼室から
ほぼ均等に上昇される燃焼ガスは、変化の大きい略長方
形断面の絞り部で絞られて効果的に攪拌され二次燃焼空
気との混合が促進されるので、空塔速度が遅くても二次
燃焼室での可燃分の燃焼が効果的に行われ、一酸化炭素
の排出量を十分に抑制することができる。
In the above structure, the combustion gas which is raised almost uniformly from the primary combustion chamber of circular cross section is effectively stirred by being throttled by the throttle portion of substantially rectangular cross section, which has a large change, and is mixed with the secondary combustion air. Since it is promoted, combustible components are effectively burned in the secondary combustion chamber even if the superficial velocity is low, and the amount of carbon monoxide emission can be sufficiently suppressed.

【0009】また、絞り部の下方で第1の二次空気ノズ
ルから噴射される2次燃焼空気により、絞り部における
燃焼ガスが旋回されて攪拌がより促進され、さらに絞り
部で第2の二次空気ノズルから絞り部を通過する燃焼ガ
ス中に二次燃焼空気が供給されることから、二次燃焼室
における可燃分の燃焼を充分に行うことができる。
Further, the secondary combustion air injected from the first secondary air nozzle below the throttle portion swirls the combustion gas in the throttle portion to further promote the agitation, and further the second secondary air in the throttle portion. Since the secondary combustion air is supplied from the secondary air nozzle into the combustion gas passing through the throttle portion, it is possible to sufficiently burn combustible components in the secondary combustion chamber.

【0010】さらに、第1の二次燃焼ノズルは一本であ
っても十分な攪拌効果を得ることができ、設備コストを
低減することができる。
Further, even if only one first secondary combustion nozzle is provided, a sufficient stirring effect can be obtained, and the equipment cost can be reduced.

【0011】[0011]

【実施例】以下、本発明に係る流動床式焼却炉の一実施
例を図1〜図3に基づいて説明する。なお、従来と同一
の部材は同一符号を付し、説明は省略する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fluidized bed incinerator according to the present invention will be described below with reference to FIGS. The same members as those of the related art are designated by the same reference numerals, and the description thereof will be omitted.

【0012】炉本体1には、燃焼ガスの攪拌性を向上さ
せるために、一次燃焼室Aと二次燃焼室Bとの間に絞り
部11が形成されており、この絞り部11は、円形断面
の一次燃焼室Aおよび二次燃焼室Bに対して、略長方形
断面に形成されて攪拌効果が向上されている。すなわち
この絞り部11は、炉本体1の一次燃焼室側壁1aから
水平方向に内側に狭まる下部水平壁11aと、絞り空間
を形成する長辺壁11bおよび一次燃焼室側壁1aと二
次燃焼室側壁1bとを直状に連結する円弧状短辺壁11
cと、長辺壁11bから二次燃焼室側壁1bに傾斜して
広がる上部傾斜壁11dとで形成されている。
In the furnace body 1, a throttle portion 11 is formed between the primary combustion chamber A and the secondary combustion chamber B in order to improve the stirring property of the combustion gas, and the throttle portion 11 is circular. The primary combustion chamber A and the secondary combustion chamber B of the cross section are formed in a substantially rectangular cross section to improve the stirring effect. That is, the narrowed portion 11 includes a lower horizontal wall 11a that horizontally narrows inward from the primary combustion chamber side wall 1a of the furnace body 1, a long side wall 11b that forms a throttle space, a primary combustion chamber side wall 1a, and a secondary combustion chamber side wall. Arc-shaped short side wall 11 that directly connects 1b and 1b
c and an upper inclined wall 11d that is inclined and spreads from the long side wall 11b to the secondary combustion chamber side wall 1b.

【0013】また、この絞り部11下部の一次燃焼室側
壁1aには、立上バーナ7の上方位置に一本の第1の二
次空気ノズル12が貫設され、図3に示すように、絞り
部11の下部でその長辺に直交する水平方向に二次燃焼
用空気H1を高速で噴射し、対向する一次燃焼室側壁1
aで反射されて燃焼ガスを両側に旋回させ効果的に攪拌
するように構成されている。
Further, on the side wall 1a of the primary combustion chamber below the throttle portion 11, there is provided a single first secondary air nozzle 12 at a position above the rising burner 7, and as shown in FIG. Secondary combustion air H1 is injected at a high speed in the horizontal direction perpendicular to the long side below the narrowed portion 11 to face the opposing primary combustion chamber side wall 1.
It is configured so that the combustion gas reflected by a is swirled to both sides to effectively stir.

【0014】前記絞り部11の互いに対向する長辺壁1
1bには、第2の二次空気ノズル13が設けられてい
る。この第2の二次空気ノズル13は、長辺壁11bの
外側で周壁13aにより形成されて供給口13bから二
次燃焼用空気が供給される二次空気室13cと、両長辺
壁11bに長さ方向に一定間隔毎に均等に形成されて二
次空気室13cから絞り部11に二次燃焼用空気を供給
する多数(図では20本)のノズル孔13dとで構成さ
れている。そしてノズル孔13dから噴射される二次燃
焼用空気H2は、絞り部11を通過する燃焼ガス中を少
し斜め下方に横断する方向(または水平方向に横断する
方向)に噴射されて燃焼ガス中に均一に二次燃焼用空気
を供給することができるもので、この二次燃焼用空気H
2は、比較的遅い空気流であっても対向する長辺壁11
bに達して効果的に混合することができるものである。
Long side walls 1 of the narrowed portion 11 facing each other.
A second secondary air nozzle 13 is provided at 1b. The second secondary air nozzle 13 has a secondary air chamber 13c formed by a peripheral wall 13a outside the long side wall 11b and supplied with secondary combustion air from a supply port 13b, and both long side walls 11b. It is composed of a large number (20 in the figure) of nozzle holes 13d which are evenly formed at regular intervals in the length direction and which supply secondary combustion air from the secondary air chamber 13c to the throttle portion 11. Then, the secondary combustion air H2 injected from the nozzle hole 13d is injected in the combustion gas passing through the throttle portion 11 in a direction traversing a little obliquely downward (or in a direction traversing the horizontal direction) and is injected into the combustion gas. The secondary combustion air can be supplied uniformly, and the secondary combustion air H
2 is the opposite long side wall 11 even if the air flow is relatively slow.
It can reach b and can be mixed effectively.

【0015】上記構成において、給塵口6から一次燃焼
室Aに投入された焼却物は、分散用空気口3から噴出さ
れる分散用空気により流動化された層材S中に投下され
て加熱燃焼され、その燃焼ガスは上昇されて絞り部11
に向かう。この絞り部11に至る途中で、第1の二次空
気ノズル12から高速の二次燃焼空気H1が吹き込まれ
て渦流が形成され、また絞り部11に流入する際に、吹
き込み方向が絞り部11の長辺と直交する方向であるこ
とから、より効果的に燃焼ガスが攪拌されて混合され
る。そして絞り部11において、第2の二次空気ノズル
13のノズル孔13dから燃焼ガス流を横断する方向
で、かつ長さ方向に均一に二次燃焼用空気H2が供給さ
れることから、燃焼ガスと二次燃焼用空気が万遍なく混
合され、二次燃焼室Bにおいて可燃物のほとんどが燃焼
されることになる。したがって、燃焼ガス中に含まれる
一酸化炭素もほとんどが燃焼されて二酸化炭素となり、
排ガスとともに排出される。
In the above structure, the incinerated matter thrown into the primary combustion chamber A from the dust inlet 6 is dropped into the layer material S fluidized by the dispersing air jetted from the dispersing air port 3 and heated. The combustion gas is combusted, the combustion gas is raised, and the throttle portion 11
Head to. On the way to the throttle portion 11, the high-speed secondary combustion air H1 is blown from the first secondary air nozzle 12 to form a vortex flow, and when flowing into the throttle portion 11, the blowing direction is the blowing direction. The combustion gas is more effectively agitated and mixed because it is in the direction orthogonal to the long side of the. Then, in the throttle portion 11, the secondary combustion air H2 is uniformly supplied in the lengthwise direction across the combustion gas flow from the nozzle hole 13d of the second secondary air nozzle 13, so that the combustion gas And the secondary combustion air are evenly mixed, and most of the combustible substances are burned in the secondary combustion chamber B. Therefore, most of the carbon monoxide contained in the combustion gas is burned to carbon dioxide,
Emitted with exhaust gas.

【0016】上記実施例によれば、1本の第1の二次空
気ノズル12から高速の二次燃焼用空気H1で燃焼ガス
を旋回させて攪拌した後、長辺が二次燃焼用空気流と直
交する方向の絞り部11で、断面が円形から略長方形に
急速に変化する絞り部11により、燃焼ガスと二次燃焼
用空気とを旋回させて攪拌混合することができ、さらに
絞り部11において、第2の二次空気ノズル13から二
次燃焼用空気H2が均一に供給された後、さらに二次燃
焼室Bで急速に広がることで混合燃焼を促進させること
ができる。したがって、燃焼排ガス中の一酸化炭素を大
幅に抑制することができる。
According to the above embodiment, after the combustion gas is swirled and agitated by the high-speed secondary combustion air H1 from one first secondary air nozzle 12, the long side is the secondary combustion air flow. With the throttle portion 11 in the direction orthogonal to the direction, the combustion gas and the secondary combustion air can be swirled and agitated and mixed by the throttle portion 11 whose cross section rapidly changes from a circular shape to a substantially rectangular shape. In the above, after the secondary combustion air H2 is uniformly supplied from the second secondary air nozzle 13, the mixed combustion can be promoted by further rapidly expanding in the secondary combustion chamber B. Therefore, carbon monoxide in the combustion exhaust gas can be significantly suppressed.

【0017】[0017]

【発明の効果】以上に述べたごとく本発明によれば、円
形断面の一次燃焼室からほぼ均等に上昇される燃焼ガス
は、異形断面で略長方形断面の絞り部で絞られて効果的
に攪拌され二次燃焼空気との混合が促進され、さらに二
次燃焼室で拡開されるので、空塔速度が遅くても二次燃
焼室での可燃分の燃焼を効果的に行うことができ、一酸
化炭素の排出量を十分に抑制することができる。
As described above, according to the present invention, the combustion gas that is raised almost uniformly from the primary combustion chamber of circular cross section is effectively stirred by being throttled by the narrowed section of the substantially rectangular cross section. Since the mixing with the secondary combustion air is promoted and further expanded in the secondary combustion chamber, it is possible to effectively burn combustible components in the secondary combustion chamber even if the superficial velocity is low, It is possible to sufficiently suppress the emission amount of carbon monoxide.

【0018】また、絞り部の下方で第1の二次空気ノズ
ルから噴射される2次燃焼空気により、旋回流を形成さ
せて絞り部における燃焼ガスの攪拌が促進され、さらに
絞り部で第2の二次空気ノズルから絞り部を通過する燃
焼ガス中に二次燃焼空気が供給されることから、二次燃
焼室における可燃分の燃焼を充分に行うことができ、排
ガス中の可燃分のほとんどを燃焼させて一酸化炭素の含
有量を大幅に低減することができる。
Further, the secondary combustion air injected from the first secondary air nozzle below the throttle section forms a swirling flow to promote the agitation of the combustion gas in the throttle section, and further to the second section in the throttle section. Since the secondary combustion air is supplied from the secondary air nozzle into the combustion gas that passes through the throttle, the combustible components in the secondary combustion chamber can be sufficiently burned, and most of the combustible components in the exhaust gas are Can be burned to significantly reduce the carbon monoxide content.

【0019】さらに、第1の二次燃焼ノズルは一本であ
っても十分な攪拌効果を得ることができ、設備コストを
低減することができる。
Furthermore, even if only one first secondary combustion nozzle is provided, a sufficient stirring effect can be obtained, and the equipment cost can be reduced.

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

【図1】本発明に係る流動床式焼却炉の一実施例を示す
縦断面図である。
FIG. 1 is a vertical sectional view showing an embodiment of a fluidized bed incinerator according to the present invention.

【図2】図1に示すI−I断面図である。FIG. 2 is a sectional view taken along line I-I shown in FIG.

【図3】図1に示すII−II断面図である。3 is a sectional view taken along line II-II shown in FIG.

【図4】従来の流動床式焼却炉を示す縦断面図である。FIG. 4 is a vertical sectional view showing a conventional fluidized bed incinerator.

【図5】従来の他の流動床式焼却炉を示す縦断面図であ
る。
FIG. 5 is a vertical cross-sectional view showing another conventional fluidized bed incinerator.

【符号の説明】[Explanation of symbols]

A 一次燃焼室 B 二次燃焼室 S 層材 F1 二次燃焼用空気 F2 二次燃焼用空気 1 炉本体 2 排出口 3 分散用空気孔 4 分散用空気口 5 分散用空気室 6 給塵口 9 ガス排出口 11 絞り部 11b 長辺壁 12 第1の二次空気ノズル 13 第2の二次空気ノズル 13d ノズル孔 A Primary combustion chamber B Secondary combustion chamber S Layer material F1 Secondary combustion air F2 Secondary combustion air 1 Reactor body 2 Discharge port 3 Dispersion air hole 4 Dispersion air port 5 Dispersion air chamber 6 Dust supply port 9 Gas outlet 11 Restricted portion 11b Long side wall 12 First secondary air nozzle 13 Second secondary air nozzle 13d Nozzle hole

───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 昌道 大阪府大阪市此花区西九条5丁目3番28号 日立造船株式会社内 (72)発明者 松井 健 大阪府大阪市此花区西九条5丁目3番28号 日立造船株式会社内 (72)発明者 風早 秀樹 大阪府大阪市此花区西九条5丁目3番28号 日立造船株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Masamichi Takahashi 5-3-8 Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Ken Matsui 5-chome, Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture 3-28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Hideki Kazehaya 5-3-28 Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 立型円筒状炉本体の底部に、層材を流動
化させて焼却物を燃焼させる一次燃焼室が設けられると
ともに、炉本体の上部に、燃焼ガス中に吹き込まれた二
次燃焼用空気により燃焼ガスを二次燃焼させる二次燃焼
室が設けられた流動床式焼却炉において、一次燃焼室と
二次燃焼室の間に、略長方形断面の絞り部を形成したこ
とを特徴とする流動床式焼却炉。
1. A vertical combustion chamber is provided at the bottom of a vertical cylindrical furnace body for fluidizing a layered material to burn the incineration, and at the top of the furnace body, a secondary combustion chamber blown into the combustion gas. In a fluidized bed incinerator provided with a secondary combustion chamber for secondary combustion of combustion gas with combustion air, a narrowed portion having a substantially rectangular cross section is formed between the primary combustion chamber and the secondary combustion chamber. Fluidized bed type incinerator.
【請求項2】 燃焼ガス中に二次燃焼用空気を供給する
二次空気ノズルを、絞り部の下部に配置されて絞り部の
長辺方向と直交する横方向に二次燃焼用空気を噴射する
第1の二次空気ノズルと、前記絞り部に配置されて燃焼
ガスを横断する方向に二次燃焼用空気を噴射する第2の
二次空気ノズルとで構成したことを特徴とする請求項1
記載の流動床式焼却炉。
2. A secondary air nozzle for supplying secondary combustion air into the combustion gas, the secondary air nozzle being disposed below the throttle portion and injecting the secondary combustion air in a lateral direction orthogonal to the long side direction of the throttle portion. And a second secondary air nozzle that is disposed in the narrowed portion and injects secondary combustion air in a direction that traverses the combustion gas. 1
Fluidized bed incinerator as described.
【請求項3】 第1の二次空気ノズルを1本としたこと
を特徴とする請求項2記載の流動床式焼却炉。
3. The fluidized bed incinerator according to claim 2, wherein the number of the first secondary air nozzles is one.
JP6201217A 1994-08-26 1994-08-26 Fluid bed incinerator Expired - Lifetime JP3014279B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6201217A JP3014279B2 (en) 1994-08-26 1994-08-26 Fluid bed incinerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6201217A JP3014279B2 (en) 1994-08-26 1994-08-26 Fluid bed incinerator

Publications (2)

Publication Number Publication Date
JPH0861636A true JPH0861636A (en) 1996-03-08
JP3014279B2 JP3014279B2 (en) 2000-02-28

Family

ID=16437290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6201217A Expired - Lifetime JP3014279B2 (en) 1994-08-26 1994-08-26 Fluid bed incinerator

Country Status (1)

Country Link
JP (1) JP3014279B2 (en)

Also Published As

Publication number Publication date
JP3014279B2 (en) 2000-02-28

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