JPH0425443B2 - - Google Patents
Info
- Publication number
- JPH0425443B2 JPH0425443B2 JP59090263A JP9026384A JPH0425443B2 JP H0425443 B2 JPH0425443 B2 JP H0425443B2 JP 59090263 A JP59090263 A JP 59090263A JP 9026384 A JP9026384 A JP 9026384A JP H0425443 B2 JPH0425443 B2 JP H0425443B2
- Authority
- JP
- Japan
- Prior art keywords
- fluidized bed
- combustion
- combustion furnace
- furnace
- sub
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/005—Fluidised bed combustion apparatus comprising two or more beds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Gasification And Melting Of Waste (AREA)
Description
【発明の詳細な説明】
この発明は流動層燃焼装置に係り、特に燃焼プ
ラントの簡略化が達成し得る燃焼装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluidized bed combustion apparatus, and more particularly to a combustion apparatus that can simplify the combustion plant.
流動層を用いた燃焼装置は種々の利点があるた
め最近各分野で注目を集め、実用化が進められて
いる。この流動層燃焼装置の利点を石炭を燃料と
する流動層ボイラを例に説明すると次のとおりで
ある。 Combustion devices using fluidized beds have various advantages and have recently attracted attention in various fields, and their practical use is progressing. The advantages of this fluidized bed combustion apparatus are explained below using a fluidized bed boiler that uses coal as fuel.
(1) 流動層内での伝熱係数が非常に高く、層内伝
熱面積が減少でき、ボイラ全体を小型化でき
る。(1) The heat transfer coefficient within the fluidized bed is extremely high, and the heat transfer area within the bed can be reduced, making it possible to downsize the entire boiler.
(2) 流動媒体との混合撹拌により石炭と空気との
混合が良好となり低品位炭でも良好に燃焼でき
る。(2) By mixing and stirring with a fluidized medium, the coal and air are mixed well, and even low-grade coal can be burned well.
(3) 石灰石，ドロマイト等の脱硫剤を流動媒体と
して、または流動媒体に添加することにより層
内脱硫が可能である。(3) In-layer desulfurization is possible by using a desulfurizing agent such as limestone or dolomite as a fluidizing medium or adding it to a fluidizing medium.
(4) 比較的低温で燃焼させるので灰の溶融がなく
スラツギングが防止できかつNOxの発生も少
い。(4) Since it is burnt at a relatively low temperature, there is no melting of ash, preventing slugging and generating less NOx.
第１図は石炭燃焼用流動層ボイラの系統を示
す。 Figure 1 shows the system of a coal-fired fluidized bed boiler.
図中符号１は主燃焼炉であり、流動化空気A1
により流動化された流動層２に対して石炭３が供
給され燃焼する。燃焼により発生した熱は層内伝
熱管（図示せず）や炉壁を構成する水壁管により
回収される。一方燃焼ガスは空塔部４をを上昇し
て外部に排出されるが、この場合、層内に供給さ
れる空気A1は媒体の流動化の点から供給量が設
定されるため、灰分の相当量が空塔部へ飛散す
る。また層内に滞留する時間内に燃焼を行えなか
つた未燃分もかなりの量となる。この様な灰分及
び未燃分を含有する燃焼ガスは主燃焼炉１から排
出された後マルチサイクロン等の集塵装置５にお
いて捕集される。捕集された灰分及び未燃分は副
燃焼炉６に投入され、ここにおいて燃焼される。
なお、未燃分は例えば700〜900℃の温度域で燃焼
を行う主燃焼炉１において燃焼を行えなかつたも
のであるから、この温度域よりも高い温度（例え
ば1000℃）で運転される。副燃焼炉６から排出さ
れた排ガスは集塵装置７において灰分が捕集さ
れ、ダスト除去を終つた排ガスは前記集塵器５か
ら排出された排ガスと合流して大気中に放出され
る。 The code 1 in the figure is the main combustion furnace, and the fluidizing air A 1
Coal 3 is supplied to the fluidized bed 2 and burned. The heat generated by combustion is recovered by an intralayer heat exchanger tube (not shown) and a water wall tube that constitutes the furnace wall. On the other hand, the combustion gas ascends through the empty tower section 4 and is discharged to the outside. A considerable amount scatters into the sky tower. In addition, there is also a considerable amount of unburned matter that cannot be combusted within the time it remains in the layer. Combustion gas containing such ash and unburned matter is discharged from the main combustion furnace 1 and then collected in a dust collector 5 such as a multi-cyclone. The collected ash and unburned matter are fed into the sub-combustion furnace 6 and burned there.
In addition, since the unburned matter cannot be combusted in the main combustion furnace 1 which performs combustion in a temperature range of, for example, 700 to 900°C, it is operated at a temperature higher than this temperature range (for example, 1000°C). The ash content of the exhaust gas discharged from the sub-combustion furnace 6 is collected in a dust collector 7, and the exhaust gas from which dust has been removed is combined with the exhaust gas discharged from the dust collector 5 and released into the atmosphere.
以上の如く従来型の燃焼装置においては主燃焼
炉と副燃焼炉は別個に設置されているためプラン
トの設置面積が広々となり、最近の様にプラント
用地の入手に種々の困難が生じている状態におい
ては広大な用地が必要となる上述の燃焼炉設置方
法には大きな問題がある。 As mentioned above, in conventional combustion equipment, the main combustion furnace and the auxiliary combustion furnace are installed separately, so the installation area of the plant is large, and as has been the case recently, various difficulties have arisen in acquiring land for the plant. There is a big problem with the above method of installing a combustion furnace, which requires a vast amount of land.
この発明は以上の問題点に鑑み構成したもので
あり、流動層プラントの小型化を達成し得る流動
層燃焼装置を提供することにある。 The present invention has been constructed in view of the above problems, and it is an object of the present invention to provide a fluidized bed combustion apparatus that can achieve downsizing of a fluidized bed plant.
要するにこの発明は、主燃焼装置の流動層の上
部空塔部断面積を流動層面積より減少させた流動
層燃焼装置において、前記主燃焼装置の流動層の
上でかつ前記上部空塔部の横に、主燃焼装置から
排出された未燃分を燃焼させる副燃焼炉を設けた
ことを特徴とする流動層燃焼装置である。 In short, this invention provides a fluidized bed combustion apparatus in which the cross-sectional area of the upper cavity part of the fluidized bed of the main combustion apparatus is made smaller than the area of the fluidized bed. The fluidized bed combustion apparatus is characterized in that a sub-combustion furnace is provided for burning unburned matter discharged from the main combustion apparatus.
以下この発明の実施例につき説明する。 Examples of the present invention will be described below.
第２図において、符号１０は流動層燃焼装置本
体であり、１１はこの本体の一部に形成した副燃
焼炉である。この副燃焼炉は第１図の主燃焼炉１
の切り欠き部８に形成することにより装置全体を
コンパクトに形成する。ちなみに切欠き部は空塔
部断面積を減少させて形成される。この様に副燃
焼炉を形成することにより、切欠き部斜面を利用
して多孔板１２から落下した媒体を管路１３を介
して外部に排出するように構成しておくとよい。 In FIG. 2, numeral 10 is a main body of the fluidized bed combustion apparatus, and 11 is a sub-combustion furnace formed in a part of this main body. This sub-combustion furnace is the main combustion furnace 1 in Figure 1.
By forming the cutout 8 in the notch 8, the entire device can be made compact. Incidentally, the notch is formed by reducing the cross-sectional area of the empty column. By forming the sub-combustion furnace in this manner, it is preferable to configure the medium that has fallen from the perforated plate 12 to be discharged to the outside via the conduit 13 using the notch slope.
以上の構成の装置において、装置本体１０内に
供給された空気A1は多孔板１４を経て媒体層に
流入し流動層２を形成する。この流動層２に対し
て石炭３を供給し燃焼させる。灰分，未燃分を含
有する燃焼排ガスは空塔部１５を上昇し、集塵器
５において灰分，未燃分が捕集される。捕集され
た灰分，未燃分は管路１６を経て副燃焼炉１１内
に形成された流動層１７に投入され燃焼される。
A2は副燃焼炉１１に供給する流動化空気である。
炉内に投入された灰分及び未燃分の燃焼により新
たに生じた灰分の大半は溢流口１８から外部に溢
流されるが、残りの灰分は空塔部１９を上昇する
排ガスと共に集塵器７に至り捕集される。除塵さ
れた排ガスは集塵器５から排出された排ガスと合
流し大気中に放散される。 In the apparatus having the above configuration, air A 1 supplied into the apparatus main body 10 flows into the medium layer through the perforated plate 14 to form the fluidized bed 2 . Coal 3 is supplied to this fluidized bed 2 and burned. The combustion exhaust gas containing ash and unburned components ascends through the sky section 15, and the ash and unburned components are collected in the dust collector 5. The collected ash and unburned matter are introduced into a fluidized bed 17 formed in the sub-combustion furnace 11 through a pipe 16 and burned.
A 2 is fluidized air supplied to the sub-combustion furnace 11.
Most of the ash newly generated by the combustion of the ash and unburned materials introduced into the furnace is overflowed to the outside from the overflow port 18, but the remaining ash is collected in the dust collector along with the exhaust gas rising in the empty tower section 19. 7 and was captured. The dust-removed exhaust gas joins the exhaust gas discharged from the dust collector 5 and is released into the atmosphere.
この発明を実施することにより副燃焼炉を含め
た流動層燃焼装置を小型化することができ、少い
設置面積で設置が可能となる。 By implementing this invention, the fluidized bed combustion apparatus including the sub-combustion furnace can be downsized and can be installed in a small installation area.
第１図は従来の流動層燃焼装置の系統図、第２
図はこの発明に係る流動層燃焼装置の系統図であ
る。
２，１７……流動層、１０……主燃焼装置、１
１……副燃焼炉。
Figure 1 is a system diagram of a conventional fluidized bed combustion device, Figure 2
The figure is a system diagram of a fluidized bed combustion apparatus according to the present invention. 2, 17... Fluidized bed, 10... Main combustion device, 1
1...Sub-combustion furnace.
Claims (1)
動層面積より減少させた流動層燃焼装置におい
て、前記主燃焼装置の流動層の上でかつ前記上部
空塔部の横に、主燃焼装置から排出された未燃分
を燃焼させる副燃焼炉を設けたことを特徴とする
流動層燃焼装置。1. In a fluidized bed combustion apparatus in which the cross-sectional area of the upper cavity of the fluidized bed of the main combustion apparatus is made smaller than the fluidized bed area, the main combustion A fluidized bed combustion device characterized by being provided with an auxiliary combustion furnace for burning unburned matter discharged from the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9026384A JPS60235902A (en) | 1984-05-08 | 1984-05-08 | Fluidized-layer combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9026384A JPS60235902A (en) | 1984-05-08 | 1984-05-08 | Fluidized-layer combustion system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60235902A JPS60235902A (en) | 1985-11-22 |
| JPH0425443B2 true JPH0425443B2 (en) | 1992-04-30 |
Family
ID=13993611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9026384A Granted JPS60235902A (en) | 1984-05-08 | 1984-05-08 | Fluidized-layer combustion system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60235902A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5636911U (en) * | 1979-08-27 | 1981-04-08 |
-
1984
- 1984-05-08 JP JP9026384A patent/JPS60235902A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60235902A (en) | 1985-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |