JP2553828B2 - Fluidized bed incinerator diffuser - Google Patents
Fluidized bed incinerator diffuserInfo
- Publication number
- JP2553828B2 JP2553828B2 JP6231528A JP23152894A JP2553828B2 JP 2553828 B2 JP2553828 B2 JP 2553828B2 JP 6231528 A JP6231528 A JP 6231528A JP 23152894 A JP23152894 A JP 23152894A JP 2553828 B2 JP2553828 B2 JP 2553828B2
- Authority
- JP
- Japan
- Prior art keywords
- hot air
- partition wall
- distribution
- fluidized bed
- chamber
- 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
Links
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、流動床式焼却炉で用
いられる散気盤に係り、特に含水率の高い汚泥等を連続
して焼却するのに適した流動床式焼却炉の散気盤に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air diffuser used in a fluidized bed type incinerator, and particularly to an air diffuser of a fluidized bed type incinerator suitable for continuously incinerating sludge having a high water content. Regarding the board.
【０００２】[0002]
【産業上の利用分野】従来より、食肉、水産物、野菜等
の食品加工工場やバルプ工場、汚水処理場等で発生する
含水率の高い汚泥や生ごみ等を焼却処理するに際し、硅
砂等の熱媒体を用いる流動床式焼却炉が知られている。[Industrial application] Conventionally, when incinerating sludge or food waste with a high water content generated at food processing factories such as meat, marine products and vegetables, valp factories, sewage treatment plants, etc., heat of silica sand etc. Fluidized bed incinerators using media are known.
【０００３】そして、このような流動床式焼却炉におい
ては、炉体の底部から散気盤を介して燃焼室内に熱風を
吹き込み、この熱風で燃焼室内の熱媒体を加熱すると共
に流動させて熱媒体の流動層、すなわち流動床を形成せ
しめ、この流動床に被焼却物を導入し、加熱状態で流動
する熱媒体で被焼却物を燃焼させ、流動床を形成する熱
媒体よりも高い比重の燃焼残滓をこの流動床の下方に集
めて排出し、これによって被焼却物を連続的に焼却でき
るようになっている。In such a fluidized bed type incinerator, hot air is blown into the combustion chamber from the bottom of the furnace body through the air diffuser, and the hot air heats and heats the heat medium in the combustion chamber to generate heat. A fluidized bed of the medium is formed, that is, a fluidized bed is formed, an incineration object is introduced into this fluidized bed, and the incineration article is burned by a heating medium that flows in a heated state, and the specific gravity is higher than that of the heating medium that forms the fluidized bed. Combustion debris is collected under the fluidized bed and discharged, whereby the incinerated material can be continuously incinerated.
【０００４】このため、この種の流動床式焼却炉におい
て、炉体下部に配設される散気盤は、燃焼室の下方を仕
切ると共に、燃焼室内下部に適切な熱媒体の流動床を形
成し、この熱媒体と被焼却物とを効果的に接触させて被
焼却物を効率良く焼却する上で重要な働きをするもので
あり、また、焼却炉の運転を一時的に停止した際に熱媒
体が炉外に漏れ出るのを防止するものでもある。Therefore, in the fluidized bed type incinerator of this type, the air diffuser arranged in the lower part of the furnace body partitions the lower part of the combustion chamber and forms a proper fluidized bed of the heat medium in the lower part of the combustion chamber. However, it plays an important role in efficiently incinerating the incinerator by effectively contacting this heat medium with the incinerator, and when the operation of the incinerator is temporarily stopped. It also prevents the heat medium from leaking out of the furnace.
【０００５】しかしながら、従来の散気盤においては、
焼却炉の運転を停止して熱媒体や不燃物がこの散気盤の
上に堆積した際に、これらがその熱風吐出孔からこの散
気盤内に入り込み、この熱風吐出孔を閉塞したり、更に
はこの散気盤を通過して熱風を供給する熱風供給室にま
で入り込み、次の運転に支障をきたしたり、清掃作業に
多大な労力を必要とする等の問題があった。However, in the conventional air diffuser,
When the operation of the incinerator is stopped and the heat medium and incombustibles are deposited on the air diffuser, these enter the air diffuser through the hot air discharge holes and block the hot air discharge holes, Furthermore, there are problems that the air enters the hot air supply chamber that supplies hot air after passing through the air diffuser, hinders the next operation, and requires a large amount of labor for cleaning work.
【０００６】そこでこのような問題を解決するために、
例えば実公昭６０−３１０６１号公報においては、熱風
吐出孔が直接に燃焼室内下部に形成される熱媒体の流動
床内に露出しないようにこの熱風吐出孔にキャップを配
設し、これによって運転停止時に熱媒体等が熱風吐出孔
を閉塞したり、この熱風吐出孔から侵入して熱風供給室
等に入り込むのを防止することが提案されている。Therefore, in order to solve such a problem,
For example, in Japanese Utility Model Publication No. 60-31061, a cap is arranged on the hot air discharge hole so that the hot air discharge hole is not directly exposed in the fluidized bed of the heat medium formed in the lower part of the combustion chamber, and the operation is stopped. It has been proposed to prevent the hot air discharge port from closing the hot air discharge hole or entering the hot air discharge chamber from the hot air discharge hole.
【０００７】しかしながら、このようなキップを用いる
構造を採用した流動床式焼却炉においても、散気盤上面
とこのキャップとの間にの隙間に不可避的に熱媒体等が
挟み込まれたり、これら熱媒体等がキャップ内に進入し
て残存し、熱風の流れを阻害したり、この熱風の流路を
閉塞する場合もあった。しかも、この種の従来の散気盤
においては、焼却炉の運転中に被焼却物中に混在した不
燃物を炉体外に取り出すことができないという問題もあ
る。However, even in a fluidized bed type incinerator that employs such a structure using a kip, a heat medium or the like is inevitably caught in the gap between the upper surface of the air diffuser and this cap, or these heat In some cases, the medium and the like enter and remain in the cap, obstructing the flow of hot air, or blocking the flow path of this hot air. In addition, in the conventional air diffuser of this type, there is a problem that the incombustible substances mixed in the incinerated substances cannot be taken out of the furnace body while the incinerator is operating.
【０００８】[0008]
【発明が解決しようとする課題】そこで、本発明者は、
このような従来の流動床式焼却炉の散気盤における種々
の問題を解決するために鋭意研究を重ねた結果、散気盤
に設けられて熱風を散気盤全面から吐出させるための分
配ダクトやこの分配ダクトに開設される熱風吐出孔等の
配置や形状等について所定の工夫をすることにより、キ
ャップ等の手段を用いることなく、焼却炉の運転時ある
いは停止時にかかわりなく熱媒体や不燃物等に起因する
問題を解消することができる散気盤を開発した。Therefore, the inventor of the present invention
As a result of intensive research to solve various problems in the air diffuser of the conventional fluidized bed incinerator, as a result, a distribution duct provided in the air diffuser for discharging hot air from the entire surface of the air diffuser. By devising the arrangement and shape of the hot air discharge holes, etc. opened in this distribution duct, the heat medium and non-combustible material can be used without using a means such as a cap, regardless of whether the incinerator is operating or shutting down. We have developed an air diffuser that can solve the problems caused by the above.
【０００９】従って、本発明の目的は、流動床式焼却炉
の運転時あるいは停止時にかかわりなく、熱媒体や不燃
物等に起因する熱風流路の閉塞の問題がなく、しかも、
焼却炉の運転を停止することなく運転したまま被焼却物
中に混在した不燃物を炉体外に取り出すことができる流
動床式焼却炉の散気盤を提供することにある。Therefore, an object of the present invention is to eliminate the problem of blockage of a hot air flow path due to a heat medium or an incombustible material regardless of whether the fluidized bed incinerator is in operation or stopped.
It is an object of the present invention to provide an air diffuser for a fluidized bed type incinerator that can take out incombustible substances mixed in an incinerator to the outside of the furnace body while operating the incinerator without stopping the operation.
【００１０】[0010]
【課題を解決するための手段】すなわち、本発明は、燃
焼室を形成する炉体下部に配設されてこの燃焼室下方を
仕切ると共に、中央部に向かって下がり勾配に形成され
た仕切り壁と、この仕切り壁の周縁に配設され、外部か
ら熱風が導入される熱風分配室と、上記仕切り壁の上面
に設けられ、上記熱風分配室に連通すると共に燃焼室内
に熱風を吐出するための複数の熱風吐出孔を有する複数
の分配ダクトと、上記仕切り壁の中央部に設けられ、燃
焼室内に吐出された熱風でこの燃焼室内下部に流動床を
形成する熱媒体よりも高い比重の燃焼残滓を排出する排
出口とを備え、上記各分配ダクトに開設された熱風吐出
孔は分配ダクトの先端に開設されて仕切り壁中央部に向
けて開口する先端熱風吐出孔と分配ダクトの側壁に開設
されて側方に向けて開口する側方熱風吐出孔とで構成さ
れ、各分配ダクトはその先端が仕切り壁中央部に向けて
下がり勾配に設けられて、かつ、上記各熱風吐出孔が上
記熱風分配室と各分配ダクトとの間の連通口より下方に
位置する流動床式焼却炉の散気盤である。That is, according to the present invention, a partition wall is provided at a lower portion of a furnace body which forms a combustion chamber to partition the lower portion of the combustion chamber, and a partition wall which is formed in a downward slope toward a central portion. A plurality of hot air distribution chambers arranged on the periphery of the partition wall for introducing hot air from the outside, and a plurality of hot air distribution chambers provided on the upper surface of the partition wall for communicating with the hot air distribution chamber and discharging hot air into the combustion chamber. A plurality of distribution ducts having hot air discharge holes, and a hot air discharged into the combustion chamber at the center of the partition wall to generate combustion residue having a higher specific gravity than the heat medium forming a fluidized bed in the lower part of the combustion chamber. A hot air discharge hole provided in each of the above-mentioned distribution ducts is provided at the tip of the distribution duct, and a hot air discharge hole at the tip of the distribution wall and a side wall of the distribution duct. To the side Each of the distribution ducts is provided with a side hot air discharge hole that is open, the tip of each distribution duct is provided with a downward slope toward the center of the partition wall, and each of the hot air discharge holes includes the hot air distribution chamber and each distribution duct. It is the air diffuser of the fluidized bed type incinerator located below the communication port between.
【００１１】本発明において、炉体下部に配設されて燃
焼室下方を仕切る仕切り壁はその中央部に向かって下が
り勾配に形成されている必要があり、これによって運転
時流動床を形成する熱媒体よりも高い比重の燃焼残滓は
流動する熱媒体の下方に集められる。この仕切り壁の形
状は、炉体の形状によって任意に変更できることは勿論
であり、例えば、炉体が横断面円形状である場合には偏
平な逆円錐台形状に形成され、また、炉体が横断面四角
形状である場合には偏平な逆四角錐台形状に形成され
る。In the present invention, the partition wall which is arranged in the lower part of the furnace body and divides the lower part of the combustion chamber needs to be formed with a downward slope toward the central part thereof, whereby the heat forming the fluidized bed during operation is formed. Combustion residues with a higher specific gravity than the medium are collected below the flowing heat medium. The shape of the partition wall can, of course, be arbitrarily changed depending on the shape of the furnace body. For example, when the furnace body has a circular cross section, it is formed into a flat inverted truncated cone shape, and If the cross section is quadrangular, it is formed in a flat inverted quadrangular pyramid shape.
【００１２】そして、この仕切り壁の周縁には、外部か
ら導入される熱風を仕切り壁の上面全面に略々均一に分
配できるようにするための熱風分配室が設けられる。こ
の熱風分配室には、直接外部から熱風を導入するように
してもよく、また、仕切り壁の下面側に熱風供給室を配
設し、この熱風供給室を介して外部から導入される熱風
を熱風分配室に供給するようにしてもよい。このように
熱風供給室を設けることで、熱風分配室内に供給される
熱風の圧力分布を全体に均一にすることができる。A hot air distribution chamber is provided at the periphery of the partition wall so that the hot air introduced from the outside can be distributed substantially uniformly over the entire upper surface of the partition wall. Hot air may be introduced directly into the hot air distribution chamber from the outside, or a hot air supply chamber is provided on the lower surface side of the partition wall so that the hot air introduced from the outside via the hot air supply chamber can be introduced. It may be supplied to the hot air distribution chamber. By providing the hot air supply chamber in this way, the pressure distribution of the hot air supplied into the hot air distribution chamber can be made uniform throughout.
【００１３】更に、上記仕切り壁の上面に設けられ、基
端側が上記熱風分配室に連通する複数の分配ダクトは、
その先端が仕切り壁中央部に向けて下がり勾配に設けら
れ、かつ、熱風吐出孔が熱風分配室と分配ダクトとの間
の連通口より下方に位置するように配置されており、こ
れによって焼却炉の運転停止時に熱媒体が分配ダクト内
に逆流するのを可及的に防止できる。Further, a plurality of distribution ducts provided on the upper surface of the partition wall and having a base end side communicating with the hot air distribution chamber,
The tip is provided with a downward slope toward the center of the partition wall, and the hot air discharge holes are arranged below the communication port between the hot air distribution chamber and the distribution duct. It is possible to prevent the heat medium from flowing back into the distribution duct as much as possible when the operation is stopped.
【００１４】そして、これら分配ダクトの配置について
は、仕切り壁上面で吐出される熱風を略々均一に分配で
きればよく、例えば、仕切り壁が偏平な逆円錐台形状に
形成されている場合には、仕切り壁の周縁に配設された
熱風分配室から仕切り壁中央部（中心部）に設けられた
排出口に向けて、複数の分配ダクトを放射状に配置する
のがよく、また、仕切り壁が偏平な逆四角錐台形状、す
なわち４つの逆台形状平面で構成された形状や２つの逆
台形状平面と２つの四角形状平面とで構成された形状で
ある場合には、この逆四角錐台形状を構成する４つの面
上あるいは相対する２つの面上にその周縁の熱風分配室
から仕切り壁中央部に向けて複数の分配ダクトを配置す
るのがよい。The distribution ducts may be arranged as long as the hot air discharged on the upper surface of the partition wall can be distributed substantially uniformly. For example, when the partition wall is formed into a flat inverted truncated cone shape, It is good practice to arrange a plurality of distribution ducts radially from the hot air distribution chamber arranged on the periphery of the partition wall toward the discharge port provided in the central part (center part) of the partition wall. Inverse quadrangular truncated pyramid shape, that is, in the case of a shape composed of four inverted trapezoidal planes or a shape composed of two inverted trapezoidal planes and two quadrangular planes, It is preferable that a plurality of distribution ducts are arranged from the hot air distribution chamber at the peripheral edge toward the center of the partition wall on the four surfaces constituting the above or on two opposite surfaces.
【００１５】また、この分配ダクトに開設された熱風吐
出孔は、分配ダクトの先端に開設されて仕切り壁中央部
に向けて開口する先端熱風吐出孔と分配ダクトの側壁に
開設されて側方に向けて開口する側方熱風吐出孔とで構
成されている。ここで、各分配ダクトの熱風吐出孔から
吐出された熱風で形成される熱媒体の流動床において、
先端熱風吐出孔から吐出された熱風は仕切り壁中央部で
互いに衝突して上昇気流を形成し、また、各分配ダクト
の側方熱風吐出孔から吐出された熱風は積極的に対流及
び／又は旋回流を形成すると考えられるが、これら先端
熱風吐出孔から吐出される熱風の先端風量と側方熱風吐
出孔から吐出される熱風の側方風量との比率について
は、良好な流動床を得る上で、先端風量／側方風量の比
が好ましくは１／１０〜１／２の範囲であるのがよい。The hot air discharge holes formed in the distribution duct are provided at the tip of the distribution duct and open toward the center of the partition wall, and the hot air discharge hole is formed in the side wall of the distribution duct to the side. It is composed of a side hot air discharge hole that opens toward the side. Here, in the fluidized bed of the heat medium formed by the hot air discharged from the hot air discharge holes of each distribution duct,
The hot air discharged from the tip hot air discharge holes collide with each other at the center of the partition wall to form an upward airflow, and the hot air discharged from the side hot air discharge holes of each distribution duct is positively convected and / or swirled. Although it is considered that a flow is formed, the ratio of the tip air volume of the hot air discharged from these tip hot air discharge holes to the side air quantity of the hot air discharged from the side hot air discharge holes is in order to obtain a good fluidized bed. The ratio of tip air volume / side air volume is preferably in the range of 1/10 to 1/2.
【００１６】また、この分配ダクトの形状についても、
特に制限されるものではないが、例えば仕切り壁を偏平
な逆円錐台形状に形成し、その上に複数の分配ダクトを
放射状に配置した場合には、各分配ダクトを例えば横断
面略半円形状や横断面略三角形状に形成し、その左右何
れか一方の側壁にのみ側方に向けて開口する側方熱風吐
出孔を開設すると共に他方の側壁外面を熱風の流れ方向
案内面として利用できるようにし、これによって各分配
ダクトの側方熱風吐出孔から吐出された熱風が隣接する
分配ダクトの他方の側壁外面で案内され、熱風が上方に
向かう旋回流をなるように設計するのがよい。Also regarding the shape of this distribution duct,
Although not particularly limited, for example, when the partition wall is formed into a flat inverted truncated cone shape and a plurality of distribution ducts are radially arranged on the partition wall, each distribution duct has, for example, a substantially semicircular cross section. Or a cross-section with a substantially triangular shape, and a side hot air discharge hole that opens to the side only on one of the left and right side walls is formed, and the outer surface of the other side wall can be used as a guide surface for the hot air flow direction. Therefore, it is preferable that the hot air discharged from the side hot air discharge holes of each distribution duct is guided by the outer surface of the other side wall of the adjacent distribution duct, and the hot air has a swirling flow directed upward.
【００１７】そして更に、これら各分配ダクトは、仕切
り壁上面とこの仕切り壁上面に設けられたダクト形成材
とで構成され、これら各分配ダクトの熱風吐出孔がダク
ト形成材に設けられた所定形状の切欠部で形成され、こ
れによって熱風吐出孔と仕切り壁上面との間に段差が生
じないように形成するのがよい。また、分配ダクトの形
状を先細り形状に形成し、その先端全体をそのまま開口
させて仕切り壁中央部に向かう先端熱風吐出孔としても
よい。このように分配ダクト及び熱風吐出孔の配置や形
状をその内部に熱媒体が滞留し難いように設計すること
は、熱媒体や不燃物等による熱風流路の閉塞の問題を解
消する上で好ましいことである。Further, each of the distribution ducts is composed of an upper surface of the partition wall and a duct forming material provided on the upper surface of the partition wall, and a hot air discharge hole of each of the distribution ducts has a predetermined shape provided in the duct forming material. It is preferable that the notch is formed so that no step is formed between the hot air discharge hole and the upper surface of the partition wall. Alternatively, the distribution duct may be formed in a tapered shape, and the entire tip thereof may be opened as it is to form a hot air outlet hole at the tip toward the center of the partition wall. In this way, it is preferable to design the arrangement and shape of the distribution duct and the hot air discharge hole so that the heat medium does not easily stay inside, in order to solve the problem of the hot air passage blockage due to the heat medium or incombustible material. That is.
【００１８】更に、本発明においては、上記仕切り壁の
中央部に排出口を設け、また、好ましくはこの排出口を
構成する排出管に開閉弁を取付け、燃焼室内に吐出され
た熱風でこの燃焼室内下部に流動床を形成させて被焼却
物を燃焼させる際に、この流動床の下部に熱媒体より比
重の高い燃焼残滓を集め、この比重の高い燃焼残滓を運
転中に排出口から排出できるようになっている。Further, in the present invention, a discharge port is provided in the center of the partition wall, and preferably an exhaust pipe constituting this discharge port is provided with an opening / closing valve, and hot air discharged into the combustion chamber is used for this combustion. When a fluidized bed is formed in the lower part of the room to burn incinerators, the combustion residue with a higher specific gravity than the heat medium is collected in the lower part of this fluidized bed, and the combustion residue with a high specific gravity can be discharged from the outlet during operation. It is like this.
【００１９】[0019]
【作用】本発明によれば、中央部に向かって下がり勾配
に形成された仕切り壁の周縁に熱風分配室を配設し、こ
の熱風分配室から仕切り壁中央部に向けて下がり勾配に
分配ダクトを設けると共に、この分配ダクトには熱風分
配室との間の連通口より下方に先端熱風吐出孔と側方熱
風吐出孔とを設け、これら先端熱風吐出孔及び側方熱風
吐出孔から熱風を吐出させて熱媒体の流動床を形成する
ようにしているので、流動床式焼却炉の運転時あるいは
停止時にかかわりなく、熱媒体や不燃物等に起因して熱
風の流路が閉塞されるようなことがなく、しかも、仕切
り壁の最も低い中央部に排出口を形成し、この排出口か
ら熱媒体より比重の高い燃焼残滓を排出するようにして
いるので、焼却炉の運転を継続したまま被焼却物中に混
在する比重の高い不燃物を炉体外に取り出すことができ
る。According to the present invention, the hot air distribution chamber is arranged at the peripheral edge of the partition wall which is formed in a downward slope toward the central portion, and the distribution duct is formed in a downward slope from the hot air distribution chamber toward the central portion of the partition wall. The distribution duct is provided with a tip hot air discharge hole and a side hot air discharge hole below the communication port with the hot air distribution chamber, and the hot air is discharged from the tip hot air discharge hole and the side hot air discharge hole. Since the fluidized bed of the heat medium is formed by such a method, the flow path of the hot air is blocked due to the heat medium or the incombustible material regardless of whether the fluidized bed incinerator is in operation or stopped. Moreover, since the exhaust port is formed at the lowest central part of the partition wall, and the combustion residue having a higher specific gravity than the heat medium is exhausted from this exhaust port, the incinerator is operated while the operation is continued. High specific gravity mixed in incineration Combustibles can be taken out to the furnace outside the body.
【００２０】[0020]
【実施例】以下、添付図面に示す実施例に基づいて、本
発明を具体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on the embodiments shown in the accompanying drawings.
【００２１】実施例１ 図１〜図３において、本発明の実施例に係る流動床式焼
却炉Ａの散気盤Ｂ1 が示されている。この実施例１の散
気盤Ｂ1 は、基本的には、焼却炉Ａにおいて燃焼室３を
形成する略々円筒状の炉体２の下部に配設され、この燃
焼室３下方を仕切ると共に上端周縁部から下端中心部に
向かって下がり勾配に形成された偏平な逆円錐台形状の
仕切り壁１と、この仕切り壁１の上端周縁部に配設さ
れ、仕切り壁１下面側に設けられた熱風供給室５と熱風
供給口１２を介して連通し、かつ、上記熱風供給室５を
介して外部から熱風が導入される熱風分配室４と、上記
仕切り壁１の上面に放射状に配設され、熱風分配室４に
連通口７を介して連通すると共に燃焼室３内に熱風を吐
出するための多数の熱風吐出孔８を有する横断面略半円
形状の４本の分配ダクト６と、上記仕切り壁１の中央部
に設けられ、燃焼室３内に吐出された熱風でこの燃焼室
３内下部に流動床１０を形成する熱媒体（硅砂）よりも
高い比重の燃焼残滓を排出する排出口９とを備えてい
る。Embodiment 1 FIGS. 1 to 3 show an air diffuser B 1 of a fluidized bed incinerator A according to an embodiment of the present invention. The air diffuser B 1 of the first embodiment is basically arranged in the lower part of the substantially cylindrical furnace body 2 forming the combustion chamber 3 in the incinerator A, and the lower part of the combustion chamber 3 is partitioned and A flat inverted frustoconical partition wall 1 is formed in a downward slope from the upper end peripheral portion to the center of the lower end, and the partition wall 1 is provided on the upper end peripheral portion and provided on the lower surface side of the partition wall 1. The hot air supply chamber 5 is connected to the hot air supply port 12 through the hot air supply port 12, and the hot air distribution chamber 4 into which the hot air is introduced from the outside via the hot air supply chamber 5 is arranged radially on the upper surface of the partition wall 1. , Four distribution ducts 6 having a semi-circular cross section and communicating with the hot air distribution chamber 4 through a communication port 7 and having a number of hot air discharge holes 8 for discharging hot air into the combustion chamber 3; The hot air, which is provided in the central portion of the partition wall 1 and is discharged into the combustion chamber 3, causes the combustion chamber 3 And a discharge port 9 for discharging a high density combustion residues than the heat medium (silica sand) to form the fluidized bed 10 in the lower part.
【００２２】そして、上記各分配ダクト６はその先端が
仕切り壁１中央部に向けて下がり勾配に設けられ、か
つ、上記各熱風吐出孔８が上記熱風分配室４と各分配ダ
クト６との間の連通口７より下方に位置しているほか、
各分配ダクト６に開設された熱風吐出孔８は、図２及び
図３に示すように、分配ダクト６の先端壁に開設されて
仕切り壁１中央部に向けて開口する略半円形状の先端熱
風吐出孔８ａと分配ダクト６の一方の側壁に開設されて
側方に向けて開口する略半円形状の側方熱風吐出孔８ｂ
とで構成され、分配ダクト６の他方の側壁外面が隣接す
る分配ダクト６の側方熱風吐出孔８ｂから吐出される熱
風の流れを案内する流れ方向案内面６ａとなっている。The tips of the distribution ducts 6 are provided with a downward slope toward the center of the partition wall 1, and the hot air discharge holes 8 are provided between the hot air distribution chambers 4 and the distribution ducts 6. In addition to being located below the communication port 7 of
As shown in FIGS. 2 and 3, the hot air discharge holes 8 formed in each distribution duct 6 are formed in the tip wall of the distribution duct 6 and have a substantially semicircular tip end that opens toward the center of the partition wall 1. The hot air discharge holes 8a and the lateral hot air discharge holes 8b, which are opened in one side wall of the distribution duct 6 and open to the side, are in the shape of a semicircle.
The outer surface of the other side wall of the distribution duct 6 serves as a flow direction guide surface 6a for guiding the flow of hot air discharged from the side hot air discharge holes 8b of the adjacent distribution duct 6.
【００２３】この実施例１において、上記仕切り壁１中
央部の排出口９は排出管９ａで構成されており、その下
端部には仕切り壁１中央部の排出口９周辺に集められた
熱媒体より比重の高い燃焼残滓を排出する際に開閉され
る開閉弁１３が設けられている。なお、図１において、
符合１４は炉体２上部に設けられた排気口であり、符合
１５は被焼却物の投入口であり、符合１６は燃焼バーナ
ー１７の取付口であり、符合１８は外部から熱風供給室
５内に熱風を取り込むための取入口である。In the first embodiment, the discharge port 9 in the center of the partition wall 1 is composed of a discharge pipe 9a, and the heat medium collected around the discharge port 9 in the center of the partition wall 1 is formed at the lower end thereof. An on-off valve 13 that is opened / closed when discharging combustion residues having a higher specific gravity is provided. In FIG. 1,
Reference numeral 14 is an exhaust port provided in the upper part of the furnace body 2, reference numeral 15 is an inlet of the incineration object, reference numeral 16 is an attachment opening of the combustion burner 17, and reference numeral 18 is an inside of the hot air supply chamber 5. It is an intake for taking hot air into.
【００２４】更に、この実施例１において、各分配ダク
ト６は、仕切り壁１とこの仕切り壁１の上面に設けられ
たダクト形成材６ｂとで構成されており、これら各分配
ダクト６の熱風吐出孔８がダクト形成材６ｂに設けられ
た半円形状の切欠部で形成されており、各熱風吐出孔８
が仕切り壁１上面の平面上に開口し、これによって分配
ダクト６内から各熱風吐出孔８を介して熱風が円滑に吐
出するほか、運転停止時に熱媒体がこれら各熱風吐出孔
８を閉塞し難い構造になっている。Further, in the first embodiment, each distribution duct 6 is composed of the partition wall 1 and the duct forming material 6b provided on the upper surface of the partition wall 1, and the hot air discharge of each distribution duct 6 is made. The holes 8 are formed by semicircular cutouts provided in the duct forming material 6b, and each hot air discharge hole 8 is formed.
Open in the plane of the upper surface of the partition wall 1, so that hot air is smoothly discharged from the inside of the distribution duct 6 through the hot air discharge holes 8, and the heat medium closes the hot air discharge holes 8 when the operation is stopped. It has a difficult structure.
【００２５】次に、図４及び図５は、上記実施例１の散
気盤Ｂ1 の変形例を示すものである。図４の変形例に係
る散気盤Ｂ2 では、各分配ダクト６の横断面形状が略三
角形状に形成されており、その一方の側壁に側方に向け
て開口する略半円形状の側方熱風吐出孔８ｂが開設され
ていると共に、他方の側壁の外面が隣接する分配ダクト
６の側方熱風吐出孔８ｂから吐出される熱風の流れを案
内する流れ方向案内面６ａとなっている。更に、図５の
変形例に係る散気盤Ｂ3 では、各分配ダクト６の横断面
形状が略半円形状ではあるが、先細り形状に形成されて
おり、その先端全体をそのまま開口させて仕切り壁１中
央部に向かう先端熱風吐出孔８ａとしており、運転停止
時に各分配ダクト６内に入り込んだ熱媒体が確実にこの
先端熱風吐出孔８ａから吐出される構造になっている。Next, FIGS. 4 and 5 show a modification of the air diffuser B 1 of the first embodiment. In the air diffuser B 2 according to the modification of FIG. 4, each distribution duct 6 has a substantially triangular cross-sectional shape, and one side wall thereof has a substantially semicircular side opening to the side. The hot air discharge holes 8b are opened, and the outer surface of the other side wall serves as a flow direction guide surface 6a for guiding the flow of hot air discharged from the side hot air discharge holes 8b of the adjacent distribution ducts 6. Further, in the air diffuser B 3 according to the modified example of FIG. 5, although each distribution duct 6 has a substantially semicircular cross-sectional shape, it is formed in a tapered shape, and the entire tip of the distribution duct 6 is opened as it is for partitioning. The tip hot air outlet 8a is directed to the center of the wall 1, and the heat medium that has entered the distribution ducts 6 when the operation is stopped is reliably discharged from the tip hot air outlet 8a.
【００２６】実施例２ 図６〜図８において、本発明の実施例２に係る流動床式
焼却炉の散気盤Ｂ4 が示されている。この散気盤Ｂ
4 は、上記実施例１の場合と異なり、図示外の横断面四
角形状の炉体の下部に配設されて燃焼室下方を仕切る仕
切り壁１が互いに相対向して配置された２つの四角形状
の傾斜壁１ａと互いに相対面する台形状の２つの直立壁
１ｂとからなる偏平な逆四角錐台形状に形成されてお
り、上記各傾斜壁１ａの上面にはそれぞれ３本の分配ダ
クト６が互いに相対向する位置に設けられており、これ
ら各分配ダクト６にはその先端壁に略半円形状の先端熱
風吐出孔８ａが開設されていると共に、その左右両側壁
に略半円形状の側方熱風吐出孔８ｂが開設されている。Embodiment 2 FIGS. 6 to 8 show an air diffuser B 4 of a fluidized bed incinerator according to Embodiment 2 of the present invention. This air diffuser B
Different from the case of the first embodiment, 4 is two quadrangular shapes in which partition walls 1 arranged below the furnace body having a quadrangular cross section (not shown) and partitioning the lower part of the combustion chamber are arranged to face each other. Is formed into a flat inverted quadrangular pyramid trapezoidal shape composed of two inclined walls 1a facing each other and two upright trapezoidal walls 1b, and three distribution ducts 6 are formed on the upper surface of each inclined wall 1a. The distribution ducts 6 are provided at positions facing each other, and each of the distribution ducts 6 has a substantially semicircular tip hot-air discharge hole 8a formed in its tip wall, and has substantially semicircular sides on its left and right side walls. The hot air outlet 8b is provided.
【００２７】この実施例２の散気盤Ｂ4 においては、各
分配ダクト６の先端熱風吐出孔８ａから吐出された熱風
は仕切り壁１の中央部で互いに衝突して上昇気流とな
り、また、各分配ダクト６の側方熱風吐出孔８ｂから吐
出された熱風も隣接する分配ダクト６の側方熱風吐出孔
８ｂから吐出された熱風と衝突し、あるいは、２つの直
立壁１ｂと衝突して上昇気流となり、全体として良好な
熱媒体の流動床を形成する。In the air diffuser B 4 of the second embodiment, the hot air discharged from the hot air discharge holes 8a at the tip of each distribution duct 6 collide with each other in the central portion of the partition wall 1 to form an ascending air current, and The hot air discharged from the side hot air discharge holes 8b of the distribution duct 6 also collides with the hot air discharged from the side hot air discharge holes 8b of the adjacent distribution duct 6, or collides with the two upright walls 1b and the ascending airflow. To form a good fluidized bed of the heat carrier as a whole.
【００２８】[0028]
【発明の効果】本発明の散気盤によれば、流動床式焼却
炉の運転時あるいは停止時にかかわりなく、熱媒体や不
燃物等に起因する熱風流路の閉塞の問題がなく、しか
も、焼却炉の運転を停止することなく運転したまま被焼
却物中に混在した不燃物を炉体外に取り出すことができ
る。EFFECT OF THE INVENTION According to the air diffuser of the present invention, there is no problem of blockage of the hot air flow path due to the heat medium or incombustible material regardless of the operation or shutdown of the fluidized bed incinerator, and It is possible to take out the non-combustible substances mixed in the incinerator to the outside of the furnace body while operating the incinerator without stopping the operation.
【図１】 図１は、本発明の実施例１に係る散気盤を搭
載した流動床式焼却炉を示す断面説明図である。FIG. 1 is a cross-sectional explanatory view showing a fluidized bed type incinerator equipped with an air diffuser according to a first embodiment of the present invention.
【図２】 図２は、図１の散気盤を拡大して詳細に示す
断面説明図である。FIG. 2 is an enlarged cross-sectional explanatory view showing the air diffuser of FIG. 1 in detail.
【図３】 図３は、図２の散気盤の部分断面平面図であ
る。3 is a partial cross-sectional plan view of the air diffuser of FIG.
【図４】 図４は、実施例１の散気盤の変形例を示す図
２と同様の断面説明図である。FIG. 4 is a cross-sectional explanatory view similar to FIG. 2 showing a modified example of the air diffuser of the first embodiment.
【図５】 図５は、実施例１の散気盤の変形例を示す図
３と同様の部分断面平面図である。FIG. 5 is a partial cross-sectional plan view similar to FIG. 3 showing a modified example of the air diffuser of the first embodiment.
【図６】 図６は、本発明の実施例２に係る散気盤を示
す図３と同様の部分断面平面図である。FIG. 6 is a partial sectional plan view similar to FIG. 3 showing an air diffuser according to a second embodiment of the present invention.
【図７】 図７は、図６の VII−VII 線断面説明図であ
る。7 is a cross-sectional view taken along the line VII-VII of FIG.
【図８】 図８は、図６のVIII−VIII線断面説明図であ
る。8 is a cross-sectional view taken along the line VIII-VIII of FIG.
Ａ…流動床式焼却炉、Ｂ1 、Ｂ2 、Ｂ3 、Ｂ4 …散気
盤、１…仕切り壁、１ａ…傾斜壁、１ｂ…直立壁、２…
炉体、３…燃焼室、４…熱風分配室、５…熱風供給室、
６…分配ダクト、６ａ…流れ方向案内面、６ｂ…ダクト
形成材、７…連通口、８…熱風吐出孔、８ａ…先端熱風
吐出孔、８ｂ…側方熱風吐出孔、９…排出口、９ａ…排
出管、１０…流動床、１２…熱風供給口、１３…開閉
弁、１４…排気口、１５…被焼却物の投入口、１６…燃
焼バーナーの取付口、１７…燃焼バーナー、１８…熱風
の取入口。A ... fluidized bed incinerator, B 1, B 2, B 3, B 4 ... Chikiban, 1 ... partition wall, 1a ... inclined wall, 1b ... upstanding walls, 2 ...
Furnace body, 3 ... Combustion chamber, 4 ... Hot air distribution chamber, 5 ... Hot air supply chamber,
6 ... Distribution duct, 6a ... Flow direction guide surface, 6b ... Duct forming material, 7 ... Communication port, 8 ... Hot air discharge hole, 8a ... Tip hot air discharge hole, 8b ... Side hot air discharge hole, 9 ... Discharge port, 9a ... Exhaust pipe, 10 ... Fluidized bed, 12 ... Hot air supply port, 13 ... Open / close valve, 14 ... Exhaust port, 15 ... Injection port of incineration object, 16 ... Combustion burner mounting port, 17 ... Combustion burner, 18 ... Hot air Intake.
Claims (8)
この燃焼室下方を仕切ると共に、中央部に向かって下が
り勾配に形成された仕切り壁と、この仕切り壁の周縁に
配設され、外部から熱風が導入される熱風分配室と、上
記仕切り壁の上面に設けられ、上記熱風分配室に連通す
ると共に燃焼室内に熱風を吐出するための複数の熱風吐
出孔を有する複数の分配ダクトと、上記仕切り壁の中央
部に設けられ、燃焼室内に吐出された熱風でこの燃焼室
内下部に流動床を形成する熱媒体よりも高い比重の燃焼
残滓を排出する排出口とを備え、上記各分配ダクトに開
設された熱風吐出孔は分配ダクトの先端に開設されて仕
切り壁中央部に向けて開口する先端熱風吐出孔と分配ダ
クトの側壁に開設されて側方に向けて開口する側方熱風
吐出孔とで構成され、各分配ダクトはその先端が仕切り
壁中央部に向けて下がり勾配に設けられて、かつ、上記
各熱風吐出孔が上記熱風分配室と各分配ダクトとの間の
連通口より下方に位置することを特徴とする流動床式焼
却炉の散気盤。1. A partition wall which is arranged at a lower part of a furnace body forming a combustion chamber and partitions the lower part of the combustion chamber, and which is formed with a downward slope toward a central part, and is arranged at a peripheral edge of the partition wall. A hot air distribution chamber into which hot air is introduced from the outside, and a plurality of distribution ducts which are provided on the upper surface of the partition wall and which communicate with the hot air distribution chamber and have a plurality of hot air discharge holes for discharging hot air into the combustion chamber. And a discharge port provided in the central portion of the partition wall for discharging the combustion residue having a specific gravity higher than that of the heat medium forming the fluidized bed in the lower part of the combustion chamber by the hot air discharged into the combustion chamber, The hot air discharge hole opened in the distribution duct is opened at the tip of the distribution duct and opens toward the center of the partition wall.The hot air discharge hole is opened in the side wall of the distribution duct and the side hot air is opened toward the side. Consists of a discharge hole and The tip of each distribution duct is provided with a downward slope toward the center of the partition wall, and each hot air discharge hole is located below the communication port between the hot air distribution chamber and each distribution duct. Air diffuser for fluidized bed incinerator.
する熱風供給室が形成されており、外部から導入された
熱風がこの熱風供給室を経て熱風分配室に供給される請
求項１記載の流動床式焼却炉の散気盤。2. The hot air supply chamber communicating with the hot air distribution chamber is formed on the lower surface side of the partition wall, and the hot air introduced from the outside is supplied to the hot air distribution chamber via the hot air supply chamber. Air diffuser for the fluidized bed incinerator described.
れており、その周縁に配設された熱風分配室から仕切り
壁中央部に設けられた排出口に向けて複数の分配ダクト
が放射状に配置されている請求項１又は２記載の流動床
式焼却炉の散気盤。3. The partition wall is formed in a flat inverted frustoconical shape, and a plurality of distribution ducts are radially formed from a hot air distribution chamber arranged at the periphery of the partition wall toward a discharge port provided at the center of the partition wall. The air diffuser of the fluidized bed type incinerator according to claim 1 or 2, which is disposed in the.
されており、その周縁に配設された熱風分配室から仕切
り壁中央部に向けて複数の分配ダクトが配置されている
請求項１又は２記載の流動床式焼却炉の散気盤。4. The partition wall is formed into a flat inverted quadrangular truncated pyramid shape, and a plurality of distribution ducts are arranged from a hot air distribution chamber arranged on the periphery of the partition wall toward the center of the partition wall. The air diffuser of the fluidized bed incinerator according to 1 or 2.
側壁にのみ側方に向けて開口する側方熱風吐出孔が開設
されていると共に、他方の側壁外面が隣接する分配ダク
トの側方熱風吐出孔から吐出された熱風の流れを案内す
る流れ方向案内面となっている請求項１〜３のいずれか
に記載の流動床式焼却炉の散気盤。5. Each of the distribution ducts has a lateral hot-air discharge hole that opens laterally only on one of the left and right side walls of the distribution duct, and the outer surface of the other side wall is adjacent to the distribution duct. The air diffuser of the fluidized bed incinerator according to any one of claims 1 to 3, which is a flow direction guide surface for guiding the flow of the hot air discharged from the hot air discharge holes.
円形状である請求項１〜５のいずれかに記載の流動床式
焼却炉の散気盤。6. The air diffuser for a fluidized bed incinerator according to claim 1, wherein each distribution duct has a substantially semicircular cross section.
角形状である請求項１〜５のいずれかに記載の流動床式
焼却炉の散気盤。7. The air diffuser for a fluidized bed incinerator according to claim 1, wherein each distribution duct has a substantially triangular cross-sectional shape.
の上面に設けられたダクト形成材とで構成されており、
これら各分配ダクトの熱風吐出孔がダクト形成材に設け
られた所定形状の切欠部で形成されている請求項１〜７
のいずれかに記載の流動床式焼却炉の散気盤。8. Each distribution duct comprises a partition wall and a duct forming material provided on the upper surface of the partition wall,
The hot air discharge hole of each of these distribution ducts is formed by a cutout portion of a predetermined shape provided in the duct forming material.
An air diffuser for a fluidized bed incinerator according to any one of 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6231528A JP2553828B2 (en) | 1994-09-27 | 1994-09-27 | Fluidized bed incinerator diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6231528A JP2553828B2 (en) | 1994-09-27 | 1994-09-27 | Fluidized bed incinerator diffuser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0894049A JPH0894049A (en) | 1996-04-12 |
| JP2553828B2 true JP2553828B2 (en) | 1996-11-13 |
Family
ID=16924908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6231528A Expired - Lifetime JP2553828B2 (en) | 1994-09-27 | 1994-09-27 | Fluidized bed incinerator diffuser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2553828B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3173992B2 (en) * | 1996-04-26 | 2001-06-04 | 日立造船株式会社 | Fluid bed incinerator |
| JP4948983B2 (en) * | 2006-11-17 | 2012-06-06 | 宇部テクノエンジ株式会社 | Silo heating furnace |
-
1994
- 1994-09-27 JP JP6231528A patent/JP2553828B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0894049A (en) | 1996-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH03274309A (en) | Incinerator for polymer material to be incinerated | |
| JPS62169917A (en) | Non-catalyst denitrating method for fluidized bed furnace | |
| US4479921A (en) | Solid fuel heating appliance and combustor apparatus therefor | |
| JP2553828B2 (en) | Fluidized bed incinerator diffuser | |
| US3530806A (en) | Incinerator | |
| US5809909A (en) | Method and apparatus for removing particulate material from a gas | |
| JP2555524B2 (en) | Fluidized bed incinerator diffuser | |
| JPH024106A (en) | Deodorization incinerator | |
| JPH01260207A (en) | Waste material incinerator | |
| RU2119123C1 (en) | Incinerator | |
| JPH07239110A (en) | Waste incinerator | |
| CN215175095U (en) | Incineration system with efficient incinerator | |
| JPH05223226A (en) | Waste incinerator | |
| JP2854217B2 (en) | Rostor structure of stoker type incinerator | |
| SU1126773A1 (en) | Incinerator | |
| JP3314002B2 (en) | Waste treatment equipment | |
| KR950009054Y1 (en) | Incinerator | |
| JPH07280227A (en) | Kitchen garbage incinerating furnace | |
| KR930002347Y1 (en) | Waste incinerator | |
| JP3146827B2 (en) | Fluid bed incinerator | |
| JPH09112862A (en) | Fluidized-bed combustion apparatus | |
| JP2980513B2 (en) | Fluid bed incinerator | |
| JP2973041B2 (en) | Fluidized bed incinerator | |
| JPH10238733A (en) | Incinerator | |
| JPH0942630A (en) | Incinerator |