JPS6291713A - Fluidized-bed type incinerator - Google Patents
Fluidized-bed type incineratorInfo
- Publication number
- JPS6291713A JPS6291713A JP6445786A JP6445786A JPS6291713A JP S6291713 A JPS6291713 A JP S6291713A JP 6445786 A JP6445786 A JP 6445786A JP 6445786 A JP6445786 A JP 6445786A JP S6291713 A JPS6291713 A JP S6291713A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- bed
- incinerator
- combustion gas
- hot air
- 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
Links
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は流動焼却装置、より詳しくは凍原等の″廃液の
焼却に適した流動焼却装置に関するものである０
（従来の技術とその問題点）
流動焼却炉は、蒸発・乾燥及び焼却効果の指標となる伝
熱容量係数が大きく、また構造が簡単で炉内に可動部分
がないこと、設置面積が小さいこと、起動・停止が短時
間ででき、温度制御が容易であることなどから下水や産
業廃水などの廃液、例えば凍原の焼却処理に広く用いら
れている。しかしながら廃液を焼却する際に流動床温度
を高温、例えば凍原では従来言われている７００℃ない
し９００℃とすると、流動媒体に粘着性を生じ流動床の
一部に吹き抜けを起し、引き続き運転を続行すると流動
媒体が流動性を失うことがある。さらに焼却炉から排出
されるガスの導管、除塵装置及び熱交換器の内壁面にス
ケールが耐着し、しかも当該機器の内壁面に著しるしい
腐蝕を起すことによって流動焼却炉を長時間連続して運
転することが困難であるという問題がめった。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a fluidized incinerator, more specifically a fluidized incinerator suitable for incinerating waste liquid from frozen fields, etc. (Prior art and its problems) ) Fluidized fluidized incinerators have a large heat transfer capacity coefficient, which is an indicator of evaporation, drying, and incineration effectiveness, and also have a simple structure with no moving parts inside the furnace, a small installation area, and can be started and stopped in a short time. Because it is easy to control the temperature, it is widely used in the incineration of waste liquids such as sewage and industrial wastewater, such as frozen fields. If the temperature is between 700°C and 900°C, the fluidized medium will become sticky and blow-through will occur in a part of the fluidized bed, and if the operation is continued, the fluidized medium may lose its fluidity. Scale adheres to the inner walls of gas pipes, dust removers, and heat exchangers, and the inner walls of the equipment are severely corroded, making it difficult to operate the fluidized incinerator continuously for long periods of time. I rarely have the problem.
（問題点を解決するための手段）
したがって本発明の目的は流動床の流動媒体である固体
粒子に粘着性が生じて流動状態が悪化することを防止し
、焼却炉から排出されるガスの除塵・熱回収系統におけ
るスケール耐着及び腐蝕を防止し、上記排ガスが持って
いる廃熱を効果的Ｆ回収できる流動焼却装置を提供する
ことにある。(Means for Solving the Problems) Therefore, the purpose of the present invention is to prevent solid particles, which are the fluidized medium of a fluidized bed, from becoming sticky and deteriorating the fluidized state, and to remove dust from gas discharged from an incinerator.・An object of the present invention is to provide a fluidized incinerator that prevents scale adhesion and corrosion in a heat recovery system and can effectively recover waste heat contained in the exhaust gas.
すなわち本発明は脱臭炉を上段に、流動焼却炉を下段に
設け、該脱臭炉と流動焼却炉を仕切板で区画した流動焼
却装置であって、該流動焼却炉の下部に流動用空気導入
口と、流動床の側面に熱風吹込口を設け、しかも該流動
焼却炉の上部と脱臭炉とを除塵装置を介して燃焼ガス導
管で連結したことを特徴とする流動焼却装置である。That is, the present invention provides a fluidized incinerator in which a deodorizing furnace is provided in the upper stage and a fluidized incinerator is provided in the lower stage, and the deodorizing furnace and the fluidized incinerator are separated by a partition plate, and a fluidized air inlet is provided in the lower part of the fluidized incinerator. This fluidized incinerator is characterized in that a hot air inlet is provided on the side of the fluidized bed, and the upper part of the fluidized incinerator and a deodorizing furnace are connected by a combustion gas conduit via a dust removal device.
本発明装置では流動床の温度を低温、例えば３５０〜５
５０℃に維持せしめた系で廃液を燃焼することによって
流動媒体及び燃焼ガス中の粉塵の粘着性を回避できる。In the apparatus of the present invention, the temperature of the fluidized bed is set to a low temperature, e.g.
By burning the waste liquid in a system maintained at 50° C., the stickiness of dust in the fluidizing medium and combustion gases can be avoided.
また流動床より発生する燃焼ガスを直ちに脱臭炉に導入
するのではなく燃焼ガスを除塵装置に導き、燃焼ガスに
含まれる場合や低融点物質が除去されたガスを脱臭炉に
導入することによってその後の脱臭操作、廃熱回収、熱
変換等を円滑に行わせることができる。In addition, instead of introducing the combustion gas generated from the fluidized bed into the deodorizing furnace immediately, the combustion gas is introduced into the deodorizing equipment, and the gas from which low-melting substances contained in the combustion gas and low melting point substances have been removed is then introduced into the deodorizing furnace. Deodorizing operations, waste heat recovery, heat conversion, etc. can be carried out smoothly.
本発明装置で生凍原を焼却する場合には流動床温度を３
５０〜５５０℃に維持する必要がある。流動床温度の下
限を３５０℃に設定している理由はセルロースの熱分解
温度が２４０〜４００℃であって３４０℃に発熱のピー
クがあるためであり、一方前記温度の上限を５５０℃に
設定しなければならない理由は５５０℃以上で長時間運
転を行なうと流動媒体に床置中のアルカリ金属成分に起
因して起ると考えられる粘着性を生じて流動床の圧力損
失が大きく変動するためである。流動床温度を３５０〜
５５０℃の低温に保つために燃料油を直接流動床内で燃
焼することができないため、燃料油を効率よく燃焼させ
るための熱風発生炉を設置する必要がめる。また流動床
よシ発生する燃焼ガスを除塵する装置は焼却炉の内外の
任意の位置に設けることができるが、焼却炉内に除塵装
置を組み込むことは焼却炉内の構造を複雑なものとする
。When incinerating fresh frozen ground using the device of the present invention, the fluidized bed temperature should be set to 3.
It is necessary to maintain the temperature between 50 and 550°C. The reason why the lower limit of the fluidized bed temperature is set at 350°C is because the thermal decomposition temperature of cellulose is 240 to 400°C, with an exothermic peak at 340°C, while the upper limit of the temperature is set at 550°C. The reason for this is that when operating for a long time at temperatures above 550°C, the fluidized medium becomes sticky, which is thought to be caused by the alkali metal components in the bed, and the pressure loss in the fluidized bed fluctuates greatly. It is. Fluidized bed temperature 350~
Because the fuel oil cannot be directly combusted in the fluidized bed to maintain the temperature at a low temperature of 550°C, it is necessary to install a hot air generating furnace to efficiently burn the fuel oil. Additionally, a device for removing dust from the combustion gas generated by the fluidized bed can be installed at any location inside or outside the incinerator, but incorporating a dust removal device into the incinerator will complicate the structure inside the incinerator. .
そのため焼却炉とは別に独立して除塵装置を設け、これ
に前記燃焼ガスを通過させて燃焼ガス中の微粒子を除去
する。除塵装置を経由した燃焼ガスは脱臭炉に導入され
バーナーにより６５０℃以上に加熱脱臭される。Therefore, a dust removal device is provided separately from the incinerator, and the combustion gas is passed through this to remove particulates in the combustion gas. The combustion gas that has passed through the dust remover is introduced into a deodorizing furnace, where it is heated to 650° C. or higher and deodorized by a burner.
以下本発明装置の一実施例を図面にて説明する。An embodiment of the apparatus of the present invention will be described below with reference to the drawings.
第１図において流動焼却炉１の流動床５にあらかじめ投
入されている流動媒体は、流動床の下部に設けられた流
動用空気導管４から送９込まれる空気によって流動状態
に維持される。一方熱風発生炉２で燃料油を燃焼してつ
くられた熱風は流動床５の側面に開口する熱風吹込口か
ら流動床へ導入されて流動媒体を加熱する。In FIG. 1, the fluidized medium that has been previously charged into the fluidized bed 5 of the fluidized incinerator 1 is maintained in a fluidized state by air fed in from a fluidized air conduit 4 provided at the bottom of the fluidized bed. On the other hand, hot air produced by burning fuel oil in the hot air generating furnace 2 is introduced into the fluidized bed through a hot air inlet opened on the side surface of the fluidized bed 5 to heat the fluidized medium.
廃液供給溝Ｗ６から焼却炉内へ送υ込まれた廃液は、熱
風及び流動媒体と接触して蒸発、乾燥、焼却される。流
動焼却炉１の上部から送り出される燃焼ガスは、仕切板
１６によってさえぎられて焼却炉から構成される装置８
を通った後、熱交換器１２を経て脱臭炉１０へ送シ込ま
れ脱臭炉バーナー９によって更に高温まで昇温され脱臭
される。脱臭炉から送シ出される排ガスは熱交換器１２
で廃熱を回収されて煙突１４から放出される。The waste liquid sent into the incinerator from the waste liquid supply groove W6 is evaporated, dried, and incinerated by contacting the hot air and the fluidized medium. Combustion gas sent out from the upper part of the fluidized incinerator 1 is blocked by a partition plate 16 and is passed through a device 8 consisting of an incinerator.
After passing through the heat exchanger 12, it is sent to the deodorizing furnace 10, where it is further heated to a high temperature by the deodorizing furnace burner 9 and deodorized. The exhaust gas sent from the deodorizing furnace is passed through a heat exchanger 12.
The waste heat is recovered and released from the chimney 14.
第１図では除塵装置８は焼却炉の外に設置されているが
、該除塵装置を焼却炉の内部に取り付けることもできる
。また脱臭炉１０は流動床上部に取付けられた仕切板１
６によって隔絶されて流動焼却炉の上部に一体に設けら
れているため流動焼却装置がコンパクトになる。熱交換
器１２は脱臭炉１０から送９出される排ガスから廃熱を
回収するための設備で必９１当該熱交換器を通過するガ
スはすてに除塵装置８を経由しているため熱交換器にス
ケール耐着及び著しい腐蝕を生じることなく、長時間運
転が可能でるる。当該熱交換器の設置によシ排ガスが持
っている廃熱を回収してより経済的に廃液を焼却処理す
ることができる。In FIG. 1, the dust removal device 8 is installed outside the incinerator, but the dust removal device 8 can also be installed inside the incinerator. In addition, the deodorizing furnace 10 has a partition plate 1 attached to the upper part of the fluidized bed.
6 and is integrally provided in the upper part of the fluidized incinerator, making the fluidized incinerator compact. The heat exchanger 12 is a device for recovering waste heat from the exhaust gas sent 9 from the deodorizing furnace 10, and is necessary because the gas passing through the heat exchanger passes through the dust removal device 8. It is resistant to scale adhesion and can be operated for long periods of time without causing significant corrosion. By installing the heat exchanger, the waste heat contained in the exhaust gas can be recovered and the waste liquid can be incinerated more economically.
以下実施例によｐ本発明を具体的に説明する。The present invention will be specifically explained below with reference to Examples.
（実施例）
第１図に示される装置を用い、生凍原の焼却を行なった
。(Example) Fresh frozen ground was incinerated using the apparatus shown in FIG.
運転条件及び運転結果はそれぞれ表１、表２に示した通
りである。The operating conditions and results are shown in Tables 1 and 2, respectively.
以下余白
表 １
表 ２
表２に示すように流動床温度を４００℃ないし５５０℃
で運転し念場合は、流動媒体に粘着性を生じることなく
安定した運転を続行することができた。また流動床から
送り出される燃焼ガスを、脱臭のための昇温をする前に
除塵して、該燃焼ガスに含まれているアルカリ金属化合
物及び低融点の反応生成物を除去することによってスケ
ール耐着及び腐蝕を防止することができる。除塵した後
の燃焼ガスは、脱臭炉で６５０℃ないし９００℃に加熱
することによって脱臭されていることがわかる。Below is a blank table 1 Table 2 As shown in Table 2, the fluidized bed temperature is 400℃ to 550℃.
In case of operation, stable operation could be continued without causing stickiness in the fluid medium. In addition, by removing dust from the combustion gas sent out from the fluidized bed before heating it for deodorization, and removing alkali metal compounds and low-melting point reaction products contained in the combustion gas, scale adhesion is prevented. and corrosion can be prevented. It can be seen that the combustion gas after dust removal is deodorized by heating it to 650°C to 900°C in a deodorizing furnace.
（発明の効果）
以上のように、本発明装置では流動媒体が粘着性を帯び
て流動性を失うことがなく、該焼却炉から排出されるガ
スの除塵、熱回収系統にスケール耐着及び著しい腐蝕を
発生させることなく排ガスの脱臭が可能でよシ経済的な
運転を行うことができる。(Effects of the Invention) As described above, in the device of the present invention, the fluidized medium does not become sticky and lose its fluidity, and the dust removal and heat recovery systems of the gas discharged from the incinerator are protected from scale adhesion. It is possible to deodorize exhaust gas without causing corrosion, allowing for more economical operation.
第１図は本発明装置概略図である。 FIG. 1 is a schematic diagram of the apparatus of the present invention.
Claims (1)
流動焼却炉を仕切板で区画した流動焼却装置であつて、
該流動焼却炉の下部に流動用空気導入口と、流動床の側
面に熱風吹込口を設け、しかも該流動焼却炉の上部と脱
臭炉とを除塵装置を介して燃焼ガス導管で連結したこと
を特徴とする流動焼却装置。A fluidized incinerator in which a deodorizing furnace is provided in the upper stage and a fluidized incinerator in the lower stage, and the deodorizing furnace and the fluidized incinerator are separated by a partition plate,
A fluidized air inlet is provided in the lower part of the fluidized incinerator, and a hot air inlet is provided on the side of the fluidized bed, and the upper part of the fluidized incinerator and the deodorizing furnace are connected by a combustion gas conduit through a dust removal device. Features of fluidized incineration equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6445786A JPS6291713A (en) | 1986-03-22 | 1986-03-22 | Fluidized-bed type incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6445786A JPS6291713A (en) | 1986-03-22 | 1986-03-22 | Fluidized-bed type incinerator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11267078A Division JPS5538480A (en) | 1978-09-12 | 1978-09-12 | Fluidized bed type night soil burning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6291713A true JPS6291713A (en) | 1987-04-27 |
| JPH0159486B2 JPH0159486B2 (en) | 1989-12-18 |
Family
ID=13258787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6445786A Granted JPS6291713A (en) | 1986-03-22 | 1986-03-22 | Fluidized-bed type incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6291713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025965A (en) * | 2006-07-25 | 2008-02-07 | Public Works Research Institute | Pressure incinerator equipment and its operation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0410786U (en) * | 1990-05-18 | 1992-01-29 |
-
1986
- 1986-03-22 JP JP6445786A patent/JPS6291713A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025965A (en) * | 2006-07-25 | 2008-02-07 | Public Works Research Institute | Pressure incinerator equipment and its operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0159486B2 (en) | 1989-12-18 |
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