JPH03199809A - Fluidized bed type incinerator for igniting waste material containing high rate of moisture - Google Patents
Fluidized bed type incinerator for igniting waste material containing high rate of moistureInfo
- Publication number
- JPH03199809A JPH03199809A JP812790A JP812790A JPH03199809A JP H03199809 A JPH03199809 A JP H03199809A JP 812790 A JP812790 A JP 812790A JP 812790 A JP812790 A JP 812790A JP H03199809 A JPH03199809 A JP H03199809A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- fluidized bed
- auxiliary
- combustion chamber
- 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.)
- Granted
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 238000009826 distribution Methods 0.000 claims description 16
- 239000002994 raw material Substances 0.000 abstract description 11
- 239000004576 sand Substances 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000000295 fuel oil Substances 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- 230000001965 increasing effect Effects 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 235000013405 beer Nutrition 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 241000533293 Sesbania emerus Species 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、水分を多量に含んだビール麦粕、コーヒ豆粕
、汚泥、等の高含水廃棄物(残漬物)を燃焼、焼却する
流動床式高含水廃棄物焼却炉に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a fluidized bed that burns and incinerates high water content wastes (residues) such as beer lees, coffee bean grounds, sludge, etc. that contain a large amount of water. This relates to a high water content waste incinerator.
従来より高含水廃棄物を流動床中で燃焼させて焼却させ
る流動床式焼却炉では、焼却炉の最下段に位置して燃焼
室へガス分散板を通して燃焼用兼流動化用の空気を供給
するための空気室に助燃用バーナを設けて燃焼室の流動
床温度を目標値(−定値)の高温に制御し、流動床中で
高含水廃棄物に含まれる多量の水分を瞬時に蒸発させ、
かつ、廃棄物を燃焼させることにより高含水廃棄物が安
定して燃焼、焼却されるように構成されている。In conventional fluidized bed incinerators, in which highly water-containing waste is burned in a fluidized bed, air is supplied to the combustion chamber for both combustion and fluidization through a gas distribution plate located at the bottom of the incinerator. An auxiliary combustion burner is installed in the air chamber for combustion, and the temperature of the fluidized bed in the combustion chamber is controlled to a high temperature of the target value (-fixed value), and a large amount of water contained in the high water content waste is instantly evaporated in the fluidized bed.
In addition, by burning the waste, the high water content waste is stably combusted and incinerated.
このように空気室に助燃用バーナを設けている流動床式
高含水廃棄物の焼却炉では高含水の廃棄物、特に水分を
80%以上含有する高含水廃棄物を燃焼させる場合には
、または通常運転時の廃棄物の水分がこれよりも低い値
であってもそれがこのような高い値を越えたような場合
には、助燃量が増加し、通常の空気量では空気室内のガ
ス温度が上昇し過ぎるため空気室の耐熱性を維持するた
めに空気量を上げ、温度を下げざるを得ない状況となる
。In this way, in a fluidized bed type high water content waste incinerator equipped with an auxiliary combustion burner in the air chamber, when burning high water content waste, especially high water content waste containing 80% or more water, or Even if the moisture content of the waste during normal operation is lower than this value, if it exceeds this high value, the amount of auxiliary combustion will increase, and with normal air volume, the gas temperature in the air chamber will increase. rises too much, and in order to maintain the heat resistance of the air chamber, the amount of air must be increased and the temperature must be lowered.
このような状況では当然熱効率が悪い運転を強いられる
こととなる。In such a situation, it is natural to be forced to operate with poor thermal efficiency.
一方、このような問題点に対処するために砂中バーナを
流動床中(流動媒体中)に臨ませて燃焼・室に取付け、
重油等の燃料を流動床中に吹き込む方法があるが、この
方法ではバーナ1本当たりの容量に限界があるため多数
のバーナが必要になると共に、燃焼が流動媒体温度に大
きく影響され安定燃焼しにくいという問題がある。On the other hand, in order to deal with such problems, a sand burner is installed in the combustion chamber so as to face the fluidized bed (fluidized medium).
There is a method of injecting fuel such as heavy oil into a fluidized bed, but this method requires a large number of burners due to the limited capacity of each burner, and combustion is greatly affected by the temperature of the fluidized medium, resulting in unstable combustion. The problem is that it is difficult.
本発明はこのような問題点を除去して熱効率の良い流動
床式高含水廃棄物焼却炉を得ることを目的としている。The present invention aims to eliminate such problems and provide a fluidized bed type high water content waste incinerator with good thermal efficiency.
上記目的を達成するために、本発明の流動床式高含水廃
棄物焼却炉は、下段に助燃用バーナを備えた空気室を有
し、その上段にガス分散板を介して設けられフリーボー
ドに供給された高含水廃棄物を前記空気室から供給され
る高温空気で流動化されて形成される流動床中で燃焼さ
せる燃焼室を有し、そのガス下流側に排ガス排出口を有
した流動床式高含水廃棄物焼却炉において、前記燃焼室
に燃焼室のフリーボードに臨ませて補助バーナを取付け
た構成としたものである。In order to achieve the above object, the fluidized bed type high water content waste incinerator of the present invention has an air chamber equipped with an auxiliary combustion burner in the lower stage, and a free board provided with a gas distribution plate in the upper stage. A fluidized bed having a combustion chamber for burning the supplied high-water content waste in a fluidized bed formed by fluidizing the supplied high-water content waste with high-temperature air supplied from the air chamber, and having an exhaust gas outlet on the downstream side of the combustion chamber. In the type high water content waste incinerator, an auxiliary burner is attached to the combustion chamber so as to face the freeboard of the combustion chamber.
フリーボード(燃焼室空間)において火炎を有する燃焼
を行うことによりフリーボードのガス温度を上げそのガ
スの輻射能(輻射熱)を利用することで燃焼室の流動床
温度を上げる。これにより空気室での助燃用バーナの助
燃量を減少させることが可能になり不必要な冷却空気を
使用しなくてもすむ。このため、熱効率が向上し、ボイ
ラ効率が向上する。By performing combustion with flame in the freeboard (combustion chamber space), the temperature of the gas in the freeboard is increased, and by utilizing the radiant power (radiant heat) of the gas, the temperature of the fluidized bed in the combustion chamber is increased. This makes it possible to reduce the amount of auxiliary combustion of the auxiliary combustion burner in the air chamber, thereby eliminating the need to use unnecessary cooling air. Therefore, thermal efficiency is improved and boiler efficiency is improved.
また、フリーボードの温度が上がることによってフリー
ボードへ高含水廃棄物が投入供給されて流動床に到る間
に高含水廃棄物の水分が所定量蒸発されて乾燥されると
共に、燃焼流動床から排出される未燃物(未燃カーボン
)の一部の燃焼が行われため未燃分の燃焼にも寄与され
る。特に、この燃焼室を一次燃焼室としこの一次燃焼室
の下流側に同様に流動床を有する二次燃焼室を設けて二
段燃焼炉とし、この−次、二次燃焼室で完全燃焼をさせ
る場合にはフリーボードでの未燃物の一部の燃焼によっ
て二次燃焼室の流動床温度を上げる効果が奏され二段燃
焼の特徴が一層高められる。In addition, as the temperature of the freeboard rises, high water content waste is fed into the freeboard, and while it reaches the fluidized bed, a predetermined amount of moisture in the high water content waste is evaporated and dried, and at the same time, it is dried from the combustion fluidized bed. Since a part of the unburned matter (unburned carbon) discharged is burned, the combustion of the unburned matter also contributes. In particular, this combustion chamber is a primary combustion chamber, and a secondary combustion chamber having a fluidized bed is provided downstream of this primary combustion chamber to form a two-stage combustion furnace, and complete combustion is carried out in this secondary combustion chamber. In some cases, the combustion of a portion of the unburnt material on the freeboard has the effect of raising the temperature of the fluidized bed in the secondary combustion chamber, further enhancing the characteristics of two-stage combustion.
第1図および第2図は本発明の詳細な説明するものであ
り、第1図は流動床式高含水廃棄物焼却炉の概略縦断面
図、第2図は第1図の■線矢視要部側面図である。Fig. 1 and Fig. 2 explain the present invention in detail, Fig. 1 is a schematic vertical cross-sectional view of a fluidized bed type high water content waste incinerator, and Fig. 2 is a view taken in the direction of the arrow ■ in Fig. 1. FIG. 3 is a side view of main parts.
第1図において、流動床式高含水廃棄物焼却炉1はその
全体構成は最下段に空気室2が位置され、その上部には
ガス分散板4を介して一次燃焼室5が位置され、更にそ
の上段には別のガス分散板IOを介して二次燃焼室11
が位置されて構成されている。空気室2には燃焼用空気
取入口3aを有した助燃用バーナ3が炉壁に取付けられ
ている。In FIG. 1, the overall configuration of a fluidized bed type high water content waste incinerator 1 includes an air chamber 2 located at the bottom, a primary combustion chamber 5 located above it via a gas distribution plate 4, and further A secondary combustion chamber 11 is connected to the upper stage through another gas distribution plate IO.
is located and configured. In the air chamber 2, an auxiliary combustion burner 3 having a combustion air intake port 3a is attached to the furnace wall.
下段のガス分散板4には多数のガス分散パイプ4aが取
付けられて空気室2の高温空気がこのガス分散パイプ4
aを通って一次燃焼室5内へ供給される。−次燃焼室5
では前記ガス分散板4の上部で粒径が1+nm以下の珪
砂等からなる流動媒体6aが空気室4からガス分散板4
のガス分散パイプ4aから分散されて吹き上げられる高
温空気によって流動化されて一次燃焼流動床6が形成さ
れる。A large number of gas distribution pipes 4a are attached to the lower gas distribution plate 4, and the high temperature air in the air chamber 2 is transferred to the gas distribution pipes 4.
It is supplied into the primary combustion chamber 5 through a. -Next combustion chamber 5
At the upper part of the gas distribution plate 4, a fluidized medium 6a made of silica sand or the like having a particle size of 1+ nm or less is transferred from the air chamber 4 to the gas distribution plate 4.
The primary combustion fluidized bed 6 is fluidized by the high temperature air dispersed and blown up from the gas distribution pipe 4a.
この−次燃焼流動床6の上部はフリーボード(空間部)
7とされ、このフリーボード7に臨ませて炉壁には補助
バーナ8が取付けられている。補助バーナ8には燃焼用
空気取入口8aが取付けられている。そして、補助バー
ナ8の上方の炉壁には高含水廃棄物としてのビール(麦
)粕(以下、原料と称することもある。)の′ax霧ノ
ズル(原料供給分散ノズルとも言われる)9が設置され
ている。The upper part of this secondary combustion fluidized bed 6 is a free board (space part)
7, and an auxiliary burner 8 is attached to the furnace wall facing the freeboard 7. A combustion air intake port 8a is attached to the auxiliary burner 8. On the furnace wall above the auxiliary burner 8, there is a 'ax mist nozzle (also called a raw material supply dispersion nozzle) 9 for beer (wheat) lees (hereinafter sometimes referred to as raw material) as high water content waste. is set up.
原料噴霧ノズル9は中央部から供給される原料である高
含水廃棄物を先端部の混合室でその周囲から供給される
圧縮空気または蒸気でミキシングしながら前方へ分散供
給する。また、第2図に示すように補助バーナ8と原料
噴霧ノズル9とは炉壁に面してそれぞれ複数個取付けら
れると共に補助バーナ8は原料噴霧ノズル9の間に位置
されて取付けられている。The raw material spray nozzle 9 disperses and supplies high water content waste, which is a raw material supplied from the center, forward while mixing it in a mixing chamber at the tip with compressed air or steam supplied from the periphery. Further, as shown in FIG. 2, a plurality of auxiliary burners 8 and a plurality of raw material spray nozzles 9 are each mounted facing the furnace wall, and the auxiliary burner 8 is installed so as to be located between the raw material spray nozzles 9.
−欣然焼室5の上方にはガス分散板10を介して二次燃
焼室11が位置している。このガス分散板10のガス分
散パイプ10aは直管で形成され一次燃焼室5での廃棄
物の燃焼灰等が排ガスと共に通過するときに直進しうる
ようにされ極力付着が生じないようにされている。ガス
分散板10の上部では一次燃焼流動床6と同様に粒径が
1mm以下の珪砂等からなる流動媒体12aで形成され
る二次燃焼流動床12が一次燃焼室5からの燃焼排ガス
によって流動化されて形成される。二次燃焼室11の上
部には排ガス排出口13が取付けられている。- A secondary combustion chamber 11 is located above the combustion chamber 5 with a gas distribution plate 10 interposed therebetween. The gas dispersion pipe 10a of the gas dispersion plate 10 is formed of a straight pipe so that the combustion ash of the waste in the primary combustion chamber 5 can travel straight when passing together with the exhaust gas, and is designed to prevent adhesion as much as possible. There is. At the upper part of the gas distribution plate 10, a secondary combustion fluidized bed 12 formed of a fluidized medium 12a made of silica sand or the like with a particle size of 1 mm or less, similar to the primary combustion fluidized bed 6, is fluidized by the combustion exhaust gas from the primary combustion chamber 5. and formed. An exhaust gas outlet 13 is attached to the upper part of the secondary combustion chamber 11.
このように構成された流動床式高含水廃棄物焼却炉1の
作動を説明する。The operation of the fluidized bed type high water content waste incinerator 1 configured as described above will be explained.
空気室2において燃焼用空気が取入口3aから導入され
ると共に助燃用バーナ3へ重油等の燃料が供給されて助
燃用バーナ3が作動される。これにより800〜100
0°Cの高温ガスがガス分散板4から吹き上げられて一
次燃焼室5に供給されて一次燃焼流動床6が形成される
。この−欣然焼流動床6の温度は助燃用バーナ3の燃焼
量を制御することにより例えば750°Cに保たれる。In the air chamber 2, combustion air is introduced from the intake port 3a, and fuel such as heavy oil is supplied to the auxiliary combustion burner 3, so that the auxiliary combustion burner 3 is operated. This will result in 800-100
High-temperature gas at 0°C is blown up from the gas distribution plate 4 and supplied to the primary combustion chamber 5 to form a primary combustion fluidized bed 6. The temperature of this dry-burning fluidized bed 6 is maintained at, for example, 750° C. by controlling the combustion amount of the auxiliary combustion burner 3.
一方、−欣然焼室5ではその炉壁に設けられた複数個の
補助バーナ8から重油等の燃料が取入口8aから取入れ
られる燃焼用空気によって燃焼されて第1図に符号Aで
示すように火炎がフリーボード7に向かって放出されて
おり、これによってフリーボード7の温度が上げられる
と共にそのガスの輻射能によって燃焼室の流動床温度も
その分上げられている。この場合、−欣然焼流動床6の
温度が750°Cのときフリーボード7の温度は800
〜900°Cである。また、補助バーナ8は幅方向に複
数個配設されているのでフリーボード7の温度は極力均
一にされる。そして、その上方の炉壁に配設された複数
個の原料噴霧ノズル9から例えば水分を80%含んだ高
含水廃棄物としてビール粕がフリーボード7を通って第
1図に符号Bで示すような軌跡を描いて一次燃焼流動床
6面に対して均等に分散、供給される。ビール粕がこの
一次燃焼流動床6に到る間において補助バーナ87
=8
の燃焼によってその水分が所定量だけ蒸発され、−欣然
焼流動床6での負荷が軽減される。そしてビール粕は一
次燃焼流動床6内で流動床を形成する高温に熱せられた
流動媒体6a(砂)と接触することによりその水分が瞬
時にして蒸発される。On the other hand, in the grilling chamber 5, fuel such as heavy oil is combusted by the combustion air taken in from the intake port 8a from a plurality of auxiliary burners 8 provided on the furnace wall, as shown by the symbol A in FIG. The flame is emitted toward the freeboard 7, which raises the temperature of the freeboard 7, and the temperature of the fluidized bed in the combustion chamber due to the radiation of the gas. In this case, - when the temperature of the sintered fluidized bed 6 is 750°C, the temperature of the freeboard 7 is 800°C.
~900°C. Further, since a plurality of auxiliary burners 8 are arranged in the width direction, the temperature of the freeboard 7 can be made as uniform as possible. Then, from a plurality of raw material spray nozzles 9 arranged on the furnace wall above it, beer lees is passed through the free board 7 as a highly water-containing waste containing, for example, 80% water, as shown by the symbol B in FIG. It is evenly distributed and supplied to the six sides of the primary combustion fluidized bed, drawing a trajectory. While the beer grounds reach this primary combustion fluidized bed 6, a predetermined amount of water is evaporated by combustion in the auxiliary burner 87=8, and the load on the primary combustion fluidized bed 6 is reduced. When the beer lees comes into contact with the fluidized medium 6a (sand) heated to a high temperature that forms a fluidized bed in the primary combustion fluidized bed 6, its water content is instantaneously evaporated.
水分を失ったビール粕は流動床の砂で攪拌されつつ容易
に燃焼される。このビール粕の分析例を示すと、高位発
熱量4850Kcal/乾kgであり、元素成分は炭素
48.86%、水素6.91%、酸素37.14%、窒
素3,23%、灰分3.28%、その他0.58%であ
る。Beer lees that have lost moisture are easily combusted while being stirred by sand in a fluidized bed. An analysis example of this beer lees shows that the higher calorific value is 4850 Kcal/dry kg, and the elemental components are carbon 48.86%, hydrogen 6.91%, oxygen 37.14%, nitrogen 3.23%, and ash content 3. 28%, others 0.58%.
この−欣然焼流動床6でビール粕は約70〜80%燃焼
され、残りの約30〜20%の未燃分(未燃カーボン)
は燃焼ガスに伴われて灰分(アッシュ)と共にフリーボ
ード7を通ってガス分散板IOを通過し二次燃焼室11
へ導入される。このとき、未燃分がフリーボード7を通
過する間にその一部は補助バーナ8の燃焼による高温度
雰囲気中で燃焼される。二次燃焼室11では二次燃焼流
動床12が形成され、最終的にここに導入された残りの
未燃分が燃焼されて完全燃焼される。このような未燃分
のフリーボード7での燃焼によって二次燃焼流動床】2
の温度を高めることができ、二段燃焼の特徴を一層高め
ることができる。Approximately 70 to 80% of the beer lees is combusted in this Kinranyaki fluidized bed 6, and the remaining approximately 30 to 20% is unburned matter (unburned carbon).
accompanies the combustion gas and passes through the freeboard 7 and the gas distribution plate IO together with the ash, and then enters the secondary combustion chamber 11.
will be introduced to At this time, while the unburned matter passes through the freeboard 7, a part of it is combusted in a high-temperature atmosphere caused by combustion in the auxiliary burner 8. A secondary combustion fluidized bed 12 is formed in the secondary combustion chamber 11, and the remaining unburned matter introduced therein is finally combusted and completely combusted. Secondary combustion fluidized bed is created by combustion of such unburned matter on the freeboard 7]2
temperature can be increased, and the characteristics of two-stage combustion can be further enhanced.
二次燃焼室11からは“800〜900°Cの燃焼排ガ
スが排ガス排出口13から排出され、図示していない廃
熱ボイラへ導かれ、ここで熱量が回収されて蒸気にされ
る。From the secondary combustion chamber 11, combustion exhaust gas at a temperature of 800 to 900°C is discharged from an exhaust gas outlet 13 and guided to a waste heat boiler (not shown), where the amount of heat is recovered and converted into steam.
しかして、本発明では上述したように一次燃焼室5では
補助バーナ8が作動されているため、水分を80%も有
するような高含水廃棄物を燃焼、焼却させる場合であっ
ても、フリーボード7でのガス温度を上げてそのガスの
輻射能を利用することにより一次燃焼流動床6の温度が
上げられるため、空気室2の助燃用バーナ3の助燃量を
増加させる必要がなくなりそれに伴う冷却空気(過剰な
空気)を使用しなくても済む。このため、ボイラ効率を
上げることができる。また、比較的水分が少ない高含水
廃棄物であっても極端に含有水分が増えたようなときで
も助燃用バーナ3の助燃量を増やすまでもなく同様に対
応させることができる。However, in the present invention, since the auxiliary burner 8 is operated in the primary combustion chamber 5 as described above, even when high water content waste containing as much as 80% water is burned and incinerated, free board Since the temperature of the primary combustion fluidized bed 6 can be raised by increasing the gas temperature at 7 and utilizing the radioactivity of the gas, there is no need to increase the amount of auxiliary combustion in the auxiliary combustion burner 3 in the air chamber 2, and the accompanying cooling No need to use air (excess air). Therefore, boiler efficiency can be increased. Furthermore, even if the waste contains high water content and has relatively little water content, even when the water content has increased significantly, the same can be done without increasing the amount of auxiliary combustion in the auxiliary combustion burner 3.
0
本実施例では燃焼室を一次燃焼室5と二次燃焼室11と
で構成して二段燃焼を行わせるようにしているので、二
次燃焼室11で未燃分(未燃カーボン)を完全に捕らえ
て完全燃焼させることができるので、燃焼効率が良く、
また、400〜450 kg/ボ・hrという高炉床負
荷が得られる。そして、−段のみの流動床からなる焼却
炉に比べて空筒速度も高くとれ、流動床面積が小さくで
き炉の大きさが小さくできコンパクトに構成できる。0 In this embodiment, the combustion chamber is composed of the primary combustion chamber 5 and the secondary combustion chamber 11 to perform two-stage combustion. Since it can be completely captured and completely combusted, combustion efficiency is high.
Further, a blast hearth load of 400 to 450 kg/bohr can be obtained. Moreover, compared to an incinerator consisting of a fluidized bed with only one stage, the cylinder velocity can be increased, the area of the fluidized bed can be reduced, and the furnace can be made smaller and more compact.
なお、第1図においては原料噴霧ノズル9は水平状態で
取付けられているが、原料によりその先端側を下に傾け
た状態で取付ける場合もある。In FIG. 1, the raw material spray nozzle 9 is installed horizontally, but depending on the raw material, the nozzle 9 may be installed with its tip side tilted downward.
以上の説明から明らかなように、本発明では補助バーナ
によって燃焼室のフリーボード温度を上げてそのガス輻
射能を利用することにより流動床の温度を上げることが
できるので、空気室の助燃用バーナの助燃量を増加させ
る必要がなくなりそれに伴って冷却空気(過剰な空気)
を使用しなくても済む。このため、ボイラ効率を上げる
ことができる。As is clear from the above explanation, in the present invention, the temperature of the fluidized bed can be raised by increasing the freeboard temperature of the combustion chamber with the auxiliary burner and utilizing the gas radiation ability, so the auxiliary combustion burner in the air chamber is There is no need to increase the amount of auxiliary combustion in the cooling air (excess air).
There is no need to use . Therefore, boiler efficiency can be increased.
また、フリーボード部の温度が上がることによってフリ
ーボード部へ高含水廃棄物が投入供給されて流動床に到
る間に高含水廃棄物の水分を所定量蒸発させて乾燥させ
ることができるので流動床での燃焼状態を良くすること
ができると共に、燃焼流動床から排出される未燃物(未
燃カーボン)の一部をフリーボードで燃焼させることが
できるので燃焼効率がよくなる。In addition, as the temperature of the freeboard section rises, high water content waste is fed into the freeboard section, and while it reaches the fluidized bed, a predetermined amount of moisture in the high water content waste can be evaporated and dried. Not only can the combustion state in the bed be improved, but also part of the unburned matter (unburnt carbon) discharged from the combustion fluidized bed can be combusted in the freeboard, resulting in improved combustion efficiency.
第1図および第2図は本発明の詳細な説明するものであ
り、第1図は流動床式高含水廃棄物焼却炉の概略縦断面
図、第2図は第1図の■線矢視要部側面図である。
1・・・流動床式高含水廃棄物焼却炉、2・・・空気室
、3・・・助燃用バーナ、4、IO・・・ガス分散板、
5・・・−欣然焼室、6・・・−欣然焼流動床、7・・
・フリーボード、8・・・補助バーナ、9・・・原料噴
霧ノズル、11・・・二次燃焼室、12・・・二次燃焼
流動床、13・・・排ガス排出口。
3Figures 1 and 2 are detailed explanations of the present invention, with Figure 1 being a schematic vertical cross-sectional view of a fluidized bed type high water content waste incinerator, and Figure 2 being taken in the direction of the arrow ■ in Figure 1. FIG. 3 is a side view of main parts. 1... Fluidized bed type high water content waste incinerator, 2... Air chamber, 3... Burner for auxiliary combustion, 4, IO... Gas distribution plate,
5...-Kinzenyaki room, 6...-Kinzenyaki fluidized bed, 7...
- Free board, 8... Auxiliary burner, 9... Raw material spray nozzle, 11... Secondary combustion chamber, 12... Secondary combustion fluidized bed, 13... Exhaust gas outlet. 3
Claims (1)
ガス分散板を介して設けられフリーボードに供給された
高含水廃棄物を前記空気室から供給される高温空気で流
動化されて形成される流動床中で燃焼させる燃焼室を有
し、そのガス下流側に排ガス排出口を有した流動床式高
含水廃棄物焼却炉において、前記燃焼室のフリーボード
に臨ませて補助バーナを取付けたことを特徴とする流動
床式高含水廃棄物焼却炉。The lower stage has an air chamber equipped with an auxiliary combustion burner, and the upper stage is provided through a gas distribution plate, and the highly water-containing waste supplied to the freeboard is fluidized with high-temperature air supplied from the air chamber. In a fluidized bed type high water content waste incinerator that has a combustion chamber for combustion in a fluidized bed and has an exhaust gas outlet on the downstream side of the combustion chamber, an auxiliary burner is installed facing the freeboard of the combustion chamber. A fluidized bed type high water content waste incinerator characterized by the following:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008127A JPH0776608B2 (en) | 1990-01-19 | 1990-01-19 | Fluidized bed high water content incinerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008127A JPH0776608B2 (en) | 1990-01-19 | 1990-01-19 | Fluidized bed high water content incinerator |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1187456A Division JPH0743108B2 (en) | 1989-07-21 | 1989-07-21 | Dispersion nozzle for supplying high water content residue to fluidized bed combustor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03199809A true JPH03199809A (en) | 1991-08-30 |
JPH0776608B2 JPH0776608B2 (en) | 1995-08-16 |
Family
ID=11684626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008127A Expired - Lifetime JPH0776608B2 (en) | 1990-01-19 | 1990-01-19 | Fluidized bed high water content incinerator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0776608B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7819071B2 (en) | 2006-11-16 | 2010-10-26 | Seminatore Salvatore J | Nozzle system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55146313A (en) * | 1979-04-28 | 1980-11-14 | Nippon Kansouki Kk | Method for incinerating excrements, sludge and the like |
JPS6243094A (en) * | 1985-08-20 | 1987-02-25 | 松下電器産業株式会社 | Radio wave leak preventer for electronic microoven range |
-
1990
- 1990-01-19 JP JP2008127A patent/JPH0776608B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55146313A (en) * | 1979-04-28 | 1980-11-14 | Nippon Kansouki Kk | Method for incinerating excrements, sludge and the like |
JPS6243094A (en) * | 1985-08-20 | 1987-02-25 | 松下電器産業株式会社 | Radio wave leak preventer for electronic microoven range |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7819071B2 (en) | 2006-11-16 | 2010-10-26 | Seminatore Salvatore J | Nozzle system |
Also Published As
Publication number | Publication date |
---|---|
JPH0776608B2 (en) | 1995-08-16 |
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