JPH0752002B2 - Garbage incinerator - Google Patents
Garbage incineratorInfo
- Publication number
- JPH0752002B2 JPH0752002B2 JP2026141A JP2614190A JPH0752002B2 JP H0752002 B2 JPH0752002 B2 JP H0752002B2 JP 2026141 A JP2026141 A JP 2026141A JP 2614190 A JP2614190 A JP 2614190A JP H0752002 B2 JPH0752002 B2 JP H0752002B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- combustion
- flue
- flow
- incinerator
- 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
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- Incineration Of Waste (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、燃焼ガスの混合を促進できるようにしたごみ
焼却炉に関するものである。TECHNICAL FIELD The present invention relates to a refuse incinerator capable of promoting mixing of combustion gases.
［従来の技術］ ストーカ式のごみ焼却炉で、第９図に示す一回流交流式
の焼却炉１がある。これは、燃焼室３からの燃焼ガスの
煙道４の位置を乾燥火格子2a側に近付け、燃焼火格子2b
からの燃焼ガスを逆流させて、乾燥火格子からの未燃ガ
スとの混合を促進するようにしたものである。[Prior Art] There is a single flow alternating current type incinerator 1 shown in Fig. 9 which is a stoker type incinerator. This is because the position of the flue 4 of the combustion gas from the combustion chamber 3 is brought closer to the dry grate 2a side, and the combustion grate 2b
The backflow of the combustion gas from the is to promote mixing with the unburned gas from the dry grate.
また、第10図に示す二回流式の焼却炉６がある。これ
は、燃焼室３の燃焼火格子2bの上方に燃焼ガスが煙道４
に直通するのを防止する中間天井７を設け、中間天井７
の前方から乾燥火格子2aからの未燃ガスを、また後方か
ら燃焼火格子2bからの燃焼ガスを煙道４に導くように
し、中間天井７の上方で両者を混合させることにより、
燃焼ガスの混合を促進させるようにしたものである。Further, there is a double-flow type incinerator 6 shown in FIG. This is because the combustion gas is flue 4 above the combustion grate 2b in the combustion chamber 3.
The intermediate ceiling 7 that prevents direct passage to the
The unburned gas from the dry grate 2a from the front of the and the combustion gas from the combustion grate 2b from the rear are led to the flue 4, and by mixing the two above the intermediate ceiling 7,
It is designed to promote the mixing of combustion gas.
［解決しようとする課題］ ところで、燃焼排ガス中のNOx及びダイオキシン等の抑
制について従来から強く要請されている。[Problems to be solved] By the way, there has been a strong demand for suppression of NOx and dioxin in combustion exhaust gas.
そこで、上記のように一回流交流方式等により燃焼ガス
の混合を促進して完全燃焼させるようにしているが、ま
だ十分ではない。Therefore, as described above, the single-flow alternating current method or the like is used to promote the mixing of the combustion gases to complete the combustion, but this is not yet sufficient.
また、この炉で、ダイオキシンを抑制する手段として、
排ガスの完全燃焼をさせるために、炉内の酸素濃度を上
昇させているものがあるが、これはNOx抑制に相反する
手段であり、ダイオキシンのためにNOxを犠牲にしてい
ることになる。In addition, as a means to suppress dioxin in this furnace,
Some have increased the oxygen concentration in the furnace in order to completely burn the exhaust gas, but this is a means that conflicts with NOx suppression, and NOx is sacrificed for dioxin.
一方、上記の二回流炉では、排ガスのガス混合室内での
十分な混合と、十分な滞留時間により、NOxをそのまま
とし、即ち酸素濃度を変えずに排ガスの混合室内での完
全燃焼を達成することができるが、まだ改善の余地があ
る。On the other hand, in the above double-flow furnace, NOx is left as it is by sufficient mixing of exhaust gas in the gas mixing chamber and sufficient residence time, that is, complete combustion in the exhaust gas mixing chamber is achieved without changing the oxygen concentration. Yes, but there is still room for improvement.
本発明は上記のような実情に鑑みてなされたもので、排
ガスの完全燃焼を可能にするごみ焼却炉を提供すること
を課題とするものである。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a refuse incinerator that enables complete combustion of exhaust gas.
［課題を解決するための手段］ 本発明のごみ焼却炉は、燃焼ガス通過部の炉内形状を平
面的に非対称とするか、または燃焼ガス通過部に邪魔板
を設け、燃焼ガスに旋回流を与えるようにしたことを特
徴とするものである。[Means for Solving the Problems] In the refuse incinerator of the present invention, the internal shape of the combustion gas passage portion is made asymmetric in plan view, or a baffle plate is provided in the combustion gas passage portion to swirl the combustion gas. It is characterized in that
あるいは、燃焼ガス通過部に、二次燃焼空気又は炉冷却
空気の吹込部を平面的に非対称に設け、燃焼ガスに旋回
流を与えるようにしたことを特徴とするものである。Alternatively, it is characterized in that a blowing portion for secondary combustion air or furnace cooling air is provided asymmetrically in a plane in the combustion gas passage portion to give a swirling flow to the combustion gas.
［作 用］ 一回流交流炉または二回流炉で、混合される燃焼ガスに
更に旋回流を与えることにより、混合室での混合を促進
すると共に、滞留時間を長くすることによって、排ガス
を完全に燃焼させる。[Operation] In a single-flow alternating current furnace or a double-flow furnace, by further giving a swirling flow to the combustion gas to be mixed, the mixing in the mixing chamber is promoted, and the residence time is lengthened to completely remove the exhaust gas. To burn.
［実施例］ 以下、本発明の一実施例を第１図及び第２図により説明
する。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
これは、燃焼室３に中間天井７を設けた二回流炉で、乾
燥火格子2aからの未燃ガスが混合室５に入るところに、
未燃ガスの流れを偏向させる突起部11を設け、炉内形状
を平面的に非対称にしたものである。This is a double-flow furnace in which the intermediate ceiling 7 is provided in the combustion chamber 3, where unburned gas from the dry grate 2a enters the mixing chamber 5,
A protrusion 11 for deflecting the flow of unburned gas is provided to make the shape of the furnace asymmetric in plan view.
これにより、燃焼火格子2aからの燃焼ガスは乾燥火格子
2bからの未燃ガスにより旋回させられる。こうして、両
者は、混合室５で完全に混合され、また滞留時間が延ば
される。As a result, the combustion gas from the combustion grate 2a becomes dry grate.
It is swirled by unburned gas from 2b. Thus, both are thoroughly mixed in the mixing chamber 5 and the residence time is extended.
かくして、NOx抑制のため、乾燥ゾーンで積極的に未燃
ガスを発生させる還元燃焼を行なっても、そのガスを混
合室５で完全に二段燃焼させることができる。また、未
燃ガスの完全二段燃焼による混合室内の高温化によって
ダイオキシン抑制を促進することができる。Thus, in order to suppress NOx, even if reducing combustion is performed to positively generate unburned gas in the drying zone, the gas can be completely burned in two stages in the mixing chamber 5. In addition, dioxin suppression can be promoted by raising the temperature inside the mixing chamber due to complete two-stage combustion of unburned gas.
次に、他の実施例を第３図及び第４図により説明する。Next, another embodiment will be described with reference to FIGS. 3 and 4.
これは、燃焼室３に中間天井７を設けた二回流炉で、乾
燥火格子2aからの未燃ガスが混合室５に入るところに、
未燃ガスの流れを偏向させる邪魔板12を設けると共に、
燃焼火格子2bからの燃焼ガスが混合室５に入るところ
に、燃焼ガスの流れを偏向させる邪魔板13を設けたもの
である。This is a double-flow furnace in which the intermediate ceiling 7 is provided in the combustion chamber 3, where unburned gas from the dry grate 2a enters the mixing chamber 5,
With the baffle plate 12 that deflects the flow of unburned gas,
A baffle plate 13 for deflecting the flow of the combustion gas is provided where the combustion gas from the combustion grate 2b enters the mixing chamber 5.
これにより、乾燥火格子からの未燃ガス及び燃焼火格子
からの燃焼ガスの両者に旋回流が与えられる。こうし
て、両者は、混合室５で完全に混合され、また滞留時間
が延ばされる。こうして、上記と同様な作用をさせるこ
とができる。This imparts a swirl flow to both the unburned gas from the dry grate and the combustion gas from the combustion grate. Thus, both are thoroughly mixed in the mixing chamber 5 and the residence time is extended. In this way, the same operation as described above can be performed.
なお、上記構成は、第５図及び第６図に示すように、ス
トーカ焼却炉２に続いてキルン焼却炉10を設けたごみ焼
却炉にも適用することができる。The above-described configuration can be applied to a refuse incinerator having a stoker incinerator 2 followed by a kiln incinerator 10 as shown in FIGS. 5 and 6.
これらの場合、突起部11及び邪魔板12、13等は、耐火物
又はボイラ水冷壁や内部空冷した金物の表面を耐火物で
覆って形成する。In these cases, the protrusion 11 and the baffles 12 and 13 are formed by covering the surface of a refractory material, a boiler water cooling wall, or an internally air-cooled metal object with a refractory material.
次に、他の実施例を第７図及び第８図により説明する。Next, another embodiment will be described with reference to FIGS.
これは、ストーカ焼却炉２に続いてキルン焼却炉10を設
けたごみ焼却炉において、乾燥火格子2aからの未燃ガス
が混合室５に入るところ及びキルン10からの燃焼ガスが
混合室５に入るところに、二次燃焼空気又は炉冷却空気
の吸込部16、17を平面的に非対象に設けたものである。This is a refuse incinerator in which the stoker incinerator 2 is followed by the kiln incinerator 10, where unburned gas from the dry grate 2a enters the mixing chamber 5 and combustion gas from the kiln 10 enters the mixing chamber 5. Suction parts (16, 17) for secondary combustion air or furnace cooling air are provided asymmetrically in a planar manner at the entrance.
これにより、乾燥火格子2aからの未燃ガス及びキルン10
からの燃焼ガスの両者に旋回流が与えられる。こうし
て、両者は、混合室５で完全に混合され、また滞留時間
が延ばされる。かくして、上記と同様な作用をさせるこ
とができる。As a result, unburned gas from the dry grate 2a and the kiln 10
A swirling flow is given to both of the combustion gases from. Thus, both are thoroughly mixed in the mixing chamber 5 and the residence time is extended. Thus, the same operation as described above can be performed.
なお、上記実施例は、二回流炉について説明したが、一
回流交流炉につていても適用することができる。In addition, although the above-mentioned embodiment explained the double-flow furnace, it can also be applied to the single-flow AC furnace.
［発明の効果］ 本発明のごみ焼却炉は上記のようなもので、一回流交流
炉または二回流炉で、混合される燃焼ガスに更に旋回流
を与えることにより、混合室での混合を促進すると共
に、滞留時間を長くすることによって、排ガスを完全に
燃焼させることができる。こうして、NOx及びダイオキ
シンの発生を抑制することができる。[Advantages of the Invention] The waste incinerator of the present invention is as described above, and promotes mixing in the mixing chamber by further giving a swirl flow to the combustion gas to be mixed in the single-flow alternating current furnace or the double-flow furnace. In addition, the exhaust gas can be completely burned by increasing the residence time. Thus, generation of NOx and dioxins can be suppressed.
第１図は本発明の一実施例を示す縦断面図、第２図は第
１図のII−II矢視断面図、第３図は他の実施例の縦断面
図、第４図は第３図のIV−IV矢視断面図、第５図は他の
実施例の縦断面図、第６図は第５図のVI−VI矢視断面
図、第７図は他の実施例の縦断面図、第８図は第７図の
VIII−VIII矢視断面図、第９図及び第10図はそれぞれ従
来の一回流交流炉及び二回流炉の断面図である。 ５……混合室、11……突起部、12,13……邪魔板、16,17
……空気吹込部1 is a vertical sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a vertical sectional view of another embodiment, and FIG. 3 is a sectional view taken along the line IV-IV of FIG. 3, FIG. 5 is a longitudinal sectional view of another embodiment, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is a longitudinal section of another embodiment. The plan view and FIG.
VIII-VIII arrow sectional views, FIG. 9 and FIG. 10 are sectional views of a conventional single-flow alternating-current furnace and double-flow alternating-current furnace, respectively. 5 ... Mixing chamber, 11 ... Protrusion, 12,13 ... Baffle plate, 16,17
...... Air blowing section
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−211614（ＪＰ，Ａ) 実開 昭52−140281（ＪＰ，Ｕ) 実開 昭55−6628（ＪＰ，Ｕ) 実開 昭50−4579（ＪＰ，Ｕ) 実開 昭56−140730（ＪＰ，Ｕ) 特公 昭48−33932（ＪＰ，Ｂ１) 実公 昭44−2947（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-211614 (JP, A) Real-life Sho 52-140281 (JP, U) Real-life Sho 55-6628 (JP, U) Real-life Sho 50- 4579 (JP, U) Actual development Sho-56-140730 (JP, U) Special public Sho-48-33932 (JP, B1) Actual public 44-2947 (JP, Y1)
Claims (4)
道に直通するのを防止する中間天井を設け、上記中間天
井の前方から乾燥火格子からの未燃ガスを、また後方か
ら燃焼火格子からの燃焼ガスを煙道に導くようにし、上
記中間天井の上方で両者を混合させるようにした二回流
式のごみ焼却炉において、 上記乾燥火格子からの未燃ガスが、上記中間天井の上方
に設けられた煙道に入る前の平面状通過部の片側に、上
記未燃ガスの流れを偏向させる突起部を設けたことを特
徴とする二回流式のごみ焼却炉。1. An intermediate ceiling is provided above a combustion grate in a combustion chamber to prevent the combustion gas from directly communicating with a flue, and unburned gas from a dry grate is supplied from the front of the intermediate ceiling and from the rear. In the double-flow type refuse incinerator, in which the combustion gas from the combustion grate is guided to the flue and the two are mixed above the intermediate ceiling, the unburned gas from the dry grate is A double-flow type waste incinerator characterized in that a projection portion for deflecting the flow of the unburned gas is provided on one side of a flat passage portion before entering the flue provided above the ceiling.
道に直通するのを防止する中間天井を設け、上記中間天
井の前方から乾燥火格子からの未燃ガスを、また後方か
ら燃焼火格子からの燃焼ガスを煙道に導くようにし、上
記中間天井の上方で両者を混合させるようにした二回流
式のごみ焼却炉において、 上記乾燥火格子からの未燃ガスが混合室である煙道に入
る前に、上記未燃ガスの流れを偏向させる邪魔板を設け
ると共に、燃焼火格子からの燃焼ガスが上記の混合室で
ある煙道に入る前に上記燃焼ガスの流れを偏向させる邪
魔板を上記未燃ガスの流れを偏向させる邪魔板に対して
対称位置に設け、上記煙道入口で上記未燃ガスと燃焼ガ
スとの混合ガスに旋回流れを生じさせるようにしたこと
を特徴とする二回流式のごみ焼却炉。2. An intermediate ceiling is provided above the combustion grate of the combustion chamber to prevent the combustion gas from directly communicating with the flue, and unburned gas from the dry grate is supplied from the front of the intermediate ceiling and from the rear. In the double-flow type refuse incinerator, in which the combustion gas from the combustion grate is guided to the flue and the two are mixed above the intermediate ceiling, the unburned gas from the dry grate is mixed in the mixing chamber. A baffle is provided to deflect the flow of unburned gas before entering a flue and the flow of combustion gas from the combustion grate is deflected before entering the flue that is the mixing chamber. A baffle plate that causes the unburned gas to be deflected is provided in a symmetrical position with respect to the baffle plate, and a swirl flow is generated in the mixed gas of the unburned gas and the combustion gas at the flue inlet. A double-flow type waste incinerator that features.
を設け、上記ストーカ式焼却炉の乾燥火格子からの未燃
ガスとキルン式焼却炉からの燃焼ガスとを煙道に導き、
混合させるようにしたごみ焼却炉において、 上記乾燥火格子からの未燃ガスが混合室である煙道に入
る前に、上記未燃ガスの流れを偏向させる邪魔板を設け
ると共に、キルン式焼却炉からの燃焼ガスが上記の混合
室である煙道に入る前に上記燃焼ガスの流れを偏向させ
る邪魔板を上記未燃ガスの流れを偏向させる邪魔板に対
して対称位置に設け、上記煙道入口で上記未燃ガスと燃
焼ガスとの混合ガスに旋回流れを生じさせるようにした
ことを特徴とするごみ焼却炉。3. A kiln-type incinerator is provided subsequent to the stoker-type incinerator, and unburned gas from the dry grate of the stoker-type incinerator and combustion gas from the kiln-type incinerator are guided to a flue,
In a refuse incinerator that is designed to be mixed, before the unburned gas from the dry grate enters the flue that is the mixing chamber, a baffle that deflects the flow of the unburned gas is provided, and a kiln-type incinerator is provided. Baffles for deflecting the flow of the combustion gas before the combustion gas from the chamber enters the flue which is the mixing chamber are provided at symmetrical positions with respect to the baffles for deflecting the flow of the unburned gas, and the flue A refuse incinerator characterized in that a swirl flow is generated in the mixed gas of the unburned gas and the combustion gas at the inlet.
を設け、上記ストーカ式焼却炉の乾燥火格子からの未燃
ガスとキルン式焼却炉からの燃焼ガスとを煙道に導き、
混合させるようにしたごみ焼却炉において、 上記乾燥火格子からの未燃ガスが混合室である煙道に入
るところに二次燃焼空気又は炉冷却空気の吹込み部を上
記煙道に対して垂直に設けると共に、上記キルン式焼却
炉からの燃焼ガスが混合室である上記煙道に入るところ
に二次燃焼空気又は炉冷却空気の吹込み部を上記煙道に
対して垂直に、且つ上記吹込み部に対して平面的に対称
位置を設け、上記煙道入口で上記未燃ガスと燃焼ガスと
の混合ガスに旋回流れを生じさせるようにしたことを特
徴とするごみ焼却炉。4. A kiln-type incinerator is provided subsequent to the stoker-type incinerator, and unburned gas from the dry grate of the stoker-type incinerator and combustion gas from the kiln-type incinerator are introduced to a flue.
In a refuse incinerator that is designed to be mixed, the secondary combustion air or furnace cooling air is blown vertically into the flue where unburned gas from the dry grate enters the flue that is the mixing chamber. In addition, a blowing portion of secondary combustion air or furnace cooling air is provided at a place where the combustion gas from the kiln type incinerator enters the flue which is a mixing chamber, vertically to the flue, and A refuse incinerator characterized in that a symmetric position is provided in a plane with respect to the trap portion so that a swirling flow is generated in the mixed gas of the unburned gas and the combustion gas at the flue inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2026141A JPH0752002B2 (en) | 1990-02-07 | 1990-02-07 | Garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2026141A JPH0752002B2 (en) | 1990-02-07 | 1990-02-07 | Garbage incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03233207A JPH03233207A (en) | 1991-10-17 |
| JPH0752002B2 true JPH0752002B2 (en) | 1995-06-05 |
Family
ID=12185270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2026141A Expired - Lifetime JPH0752002B2 (en) | 1990-02-07 | 1990-02-07 | Garbage incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752002B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102523670B1 (en) * | 2022-08-02 | 2023-04-20 | 진도종합건설(주) | Incinerator with ammonia injection nozzle device with improved nitrogen oxide removal efficiency |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020456A (en) * | 1990-02-28 | 1991-06-04 | Institute Of Gas Technology | Process and apparatus for emissions reduction from waste incineration |
| US5257585A (en) * | 1991-04-15 | 1993-11-02 | Ebara Corporation | Incinerator |
| EP0741267B1 (en) * | 1995-05-05 | 2001-08-01 | BBP Environment GmbH | Method and furnace for incinerating waste |
| DK0770820T3 (en) * | 1995-05-17 | 2001-11-26 | Hitachi Shipbuilding Eng Co | Process for waste incineration and plants therefor |
| CN104990083A (en) * | 2015-08-07 | 2015-10-21 | 浙江伟明环保股份有限公司 | Life garbage and garbage leachate biogas and sludge mixing combustion incinerator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS442947Y1 (en) * | 1965-09-30 | 1969-02-03 | ||
| JPS5136391Y2 (en) * | 1973-05-08 | 1976-09-07 | ||
| JPS52140281U (en) * | 1976-04-20 | 1977-10-24 | ||
| JPS556628U (en) * | 1978-06-24 | 1980-01-17 | ||
| JPS56140730U (en) * | 1980-03-25 | 1981-10-24 |
-
1990
- 1990-02-07 JP JP2026141A patent/JPH0752002B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102523670B1 (en) * | 2022-08-02 | 2023-04-20 | 진도종합건설(주) | Incinerator with ammonia injection nozzle device with improved nitrogen oxide removal efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03233207A (en) | 1991-10-17 |
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