JPS5814979Y2 - Ammonia injection device - Google Patents
Ammonia injection deviceInfo
- Publication number
- JPS5814979Y2 JPS5814979Y2 JP1978022796U JP2279678U JPS5814979Y2 JP S5814979 Y2 JPS5814979 Y2 JP S5814979Y2 JP 1978022796 U JP1978022796 U JP 1978022796U JP 2279678 U JP2279678 U JP 2279678U JP S5814979 Y2 JPS5814979 Y2 JP S5814979Y2
- Authority
- JP
- Japan
- Prior art keywords
- ammonia
- gas
- exhaust gas
- flue
- ammonia injection
- 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
Links
Landscapes
- Treating Waste Gases (AREA)
Description
【考案の詳細な説明】
本考案は排ガス煙道に付設する排ガス脱硝用のアンモニ
ア注入装置に関する。[Detailed Description of the Invention] The present invention relates to an ammonia injection device for exhaust gas denitrification attached to an exhaust gas flue.
従来焼却炉その他の燃焼ガスなる排ガス中のＮＯｘを除
去する脱硝法として、十分なる酸素の存在下にアンモニ
アを供給して７００℃乃至９５０℃なる高温条件範囲に
おいて該アンモニアと排ガス中のＮＯｘを反応せしめ不
活性の窒素Ｎ２となし外気に放出する脱硝法がある。Conventionally, as a denitrification method for removing NOx from flue gas such as combustion gas from incinerators and other sources, ammonia is supplied in the presence of sufficient oxygen and the ammonia and NOx from flue gas are reacted under high temperature conditions ranging from 700°C to 950°C. There is a denitrification method that releases inert nitrogen (N2) into the outside air.
而して焼却炉に連結する排ガス煙道に多数の吹出孔を具
備するアンモニア供給管を複数本挿入してなるアンモニ
ア注入装置が付設され、アンモニアガスを該アンモニア
供給管の吹出孔より煙道内に送入して排ガスにアンモニ
アが供給される。An ammonia injection device is installed in which a plurality of ammonia supply pipes each having a large number of blow-off holes are inserted into the exhaust gas flue connected to the incinerator, and ammonia gas is introduced into the flue through the blow-off holes of the ammonia supply pipes. Ammonia is supplied to the exhaust gas.
前記の如きアンモニア注入装置は構造は簡単であるが、
アンモニア供給管は排ガスの高温なる環境に露出される
ため腐蝕が激しく従って又吹出孔の目詰りも発生し易く
てアンモニアの供給が不均一となり、さらには腐蝕によ
るアンモニア供給管の交換周期が短かくて保守頻度が高
く、且つ保守時のアンモニア供給管取替には煙道の一部
を取外してアンモニア供給管を取出すので人手を要する
などの欠点を有する。Although the ammonia injection device as described above has a simple structure,
Since the ammonia supply pipe is exposed to the high-temperature environment of the exhaust gas, it is subject to severe corrosion, and the blow-off holes are easily clogged, resulting in uneven supply of ammonia.Furthermore, due to corrosion, the replacement cycle of the ammonia supply pipe is shortened. This method requires frequent maintenance, and when replacing the ammonia supply pipe during maintenance, a part of the flue must be removed and the ammonia supply pipe taken out, which requires manpower.
本考案の排ガス脱硝用のアンモニア注入装置はこれらの
欠点を解決するものであり、ガス混合器に連結するアン
モニア注入ノズルを排ガス煙道内壁面の側面及び上面に
付設し、しかも該アンモニア注入ノズルの先端を排ガス
煙道の内壁面に陥没して位置せしめてなり、アンモニア
の注入せる不活性ｔスをガス混合器を経てアンモニア注
入ノズルより排ガス煙道内に噴出する排ガス脱硝用のア
ンモニア注入装置であって、排ガスの脱硝に要するアン
モニアを不活性ガスと共に排ガスに混合するよう噴出、
供給して排ガスを脱硝処理し、又アンモニア注入ノズル
を取換容易に且つ腐蝕の少なく従って目詰りの発生しな
い様になす排ガス脱硝用のアンモニア注入装置を提供す
ることを目的とする。The ammonia injection device for exhaust gas denitrification of the present invention solves these drawbacks, and has an ammonia injection nozzle connected to a gas mixer attached to the side and top surfaces of the inner wall surface of the exhaust gas flue, and the tip of the ammonia injection nozzle. An ammonia injection device for exhaust gas denitration, which is formed by recessing and positioned on the inner wall surface of an exhaust gas flue, and injects an inert gas into which ammonia can be injected into the exhaust gas flue from an ammonia injection nozzle through a gas mixer. , ejects ammonia required for denitration of exhaust gas to mix it with inert gas,
An object of the present invention is to provide an ammonia injection device for denitrifying exhaust gas, which denitrates exhaust gas by supplying the ammonia, and allows an ammonia injection nozzle to be easily replaced, has less corrosion, and therefore prevents clogging.
本考案の一実施例を図面により説明する。An embodiment of the present invention will be described with reference to the drawings.
１は排ガス煙道、２は排ガス煙道１の側面に二ヶ、上面
に−ケ付設せるアンモニア注入ノズルであって、該アン
モニア注入ノズル２の先端は排ガス煙道の内壁面より陥
没して位置せしめられる。1 is an exhaust gas flue, 2 is an ammonia injection nozzle that is attached to the side of the exhaust gas flue 1 and one is attached to the top surface, and the tip of the ammonia injection nozzle 2 is located so as to be recessed from the inner wall surface of the exhaust gas flue. I am forced to do it.
３はガス混合器であって不活性ガス流入管４及びガス供
給管５を連結し、不活性ガス流入管４にはアンモニア供
給管６が付設され、アンモニアを注入しうるようになし
、又ガス供給管５は先端を分岐して各アンモニア注入ノ
ズル２に夫々連結する。3 is a gas mixer, which connects an inert gas inflow pipe 4 and a gas supply pipe 5; an ammonia supply pipe 6 is attached to the inert gas inflow pipe 4, so that ammonia can be injected; The supply pipe 5 branches at its tip and connects to each ammonia injection nozzle 2, respectively.
排ガス煙道１に脱硝用のアンモニアを注入するには、先
ず空気、水蒸気等の不活性ガスを不活性ガス流入管４よ
りガス混合器３に供給する。To inject ammonia for denitration into the exhaust gas flue 1, first, an inert gas such as air or water vapor is supplied to the gas mixer 3 through the inert gas inlet pipe 4.
又同時にアンモニアガスをアンモニア供給管６より不活
性ガス流入管４に混入し、不活性ガスと共にガス混合器
３に供給する。At the same time, ammonia gas is mixed into the inert gas inflow pipe 4 from the ammonia supply pipe 6, and is supplied to the gas mixer 3 together with the inert gas.
而してガス混合器３においてアンモニアガスは不活性ガ
スに均一に混合され、ガス供給管５より送出される。The ammonia gas is uniformly mixed with the inert gas in the gas mixer 3 and is sent out from the gas supply pipe 5.
尚不活性ガス流入管４及びアンモニア供給管６には夫々
調整弁を具備してなり、流量の調整が行なわれ且つ排ガ
スの脱硝に必要なるアンモニア量が注入される。The inert gas inflow pipe 4 and the ammonia supply pipe 6 are each equipped with a regulating valve to adjust the flow rate and inject the amount of ammonia necessary for denitration of the exhaust gas.
アンモニアを含有する不活性ガスはガス供給管５を経て
ガス供給管５の分岐せる先端に連結された各アンモニア
注入ノズル２に至り、排ガス煙道１内に不活性ガスを広
角度に噴出してアンモニアを排ガスに広く散布せしめ、
注入せる該アンモニアにより脱硝作用が行なわれる。The inert gas containing ammonia passes through the gas supply pipe 5 and reaches each ammonia injection nozzle 2 connected to the branching end of the gas supply pipe 5, and injects the inert gas into the exhaust gas flue 1 at a wide angle. Ammonia is widely dispersed in the exhaust gas,
The injected ammonia performs the denitrification action.
尚ガス供給管５の各分岐管には夫々調節弁を具備してな
り、各アンモニア注入ノズル２へのアンモニアの混合さ
れた不活性ガス供給量を調整してなる。Each branch pipe of the gas supply pipe 5 is equipped with a control valve, and the amount of inert gas mixed with ammonia supplied to each ammonia injection nozzle 2 is adjusted.
また、注入の際、アンモニアの注入量は排ガス中のＮＯ
ｘ量に対応させるため、アンモニアガスのみのものに比
べ不活性ガスの量だけ噴出量が多くなることとなり、ノ
ズル２が陥没していても十分に煙道内に種数して脱硝作
用が円滑に行なわれる。Also, during injection, the amount of ammonia injected is determined by the amount of NO in the exhaust gas.
In order to correspond to the x amount, the amount of ejection will be increased by the amount of inert gas compared to the case of only ammonia gas, and even if the nozzle 2 is collapsed, there will be enough seeds in the flue to ensure smooth denitrification. It is done.
本考案の排ガス脱硝用のアンモニア注入装置はアンモニ
アを不活性ガスに混合してアンモニア注入ノズルより排
ガス煙道内に噴出してなり、排ガス脱硝用のアンモニア
必要量が注入されるので所望の脱硝処理が行なわれ、又
ガス混合器にてアンモニアをよく混合してアンモニア注
入ノズルにて排ガス煙道内の排ガスに噴出するのでアン
モニアが排ガスによく混合して効率よく脱硝が行なわれ
るのであり、さらにはアンモニア注入ノズルの先端を排
ガス煙道の内壁面に陥没して位置せしめ、排ガス煙道中
を流れる高温の排ガスにアンモニア注入ノズル全体が直
接露出するのでないため、腐蝕が激しくなく又目詰りの
発生も少なくなりアンモニア注入ノズルの耐用期間を延
長せしめうると共に、保修時のアンモニア注入ノズルの
交換が容易であるなどの効果を有する。The ammonia injection device for exhaust gas denitration of the present invention mixes ammonia with an inert gas and injects the mixture into the exhaust gas flue from an ammonia injection nozzle.The required amount of ammonia for exhaust gas denitration is injected, so that the desired denitration treatment can be carried out. Furthermore, ammonia is thoroughly mixed in a gas mixer and then injected into the exhaust gas in the exhaust gas flue through an ammonia injection nozzle, so that the ammonia is well mixed with the exhaust gas and denitrification is performed efficiently. The tip of the nozzle is sunken into the inner wall of the exhaust gas flue, and the entire ammonia injection nozzle is not directly exposed to the high-temperature exhaust gas flowing through the flue, so corrosion is not severe and clogging is less likely to occur. This has effects such as being able to extend the service life of the ammonia injection nozzle and making it easy to replace the ammonia injection nozzle during maintenance.
図面は本考案の一実施例の説明図である。
１・・・排ガス煙道、２・・・アンモニア注入ノズル、
３・・・ガス混合器、４・・・ガス流入管、５・・・ガ
ス供給管、６・・・アンモニア供給管。The drawing is an explanatory diagram of an embodiment of the present invention. 1... Exhaust gas flue, 2... Ammonia injection nozzle,
3... Gas mixer, 4... Gas inflow pipe, 5... Gas supply pipe, 6... Ammonia supply pipe.
Claims (1)
、アンモニアガスと不活性ガスの混合ガスを排ガス煙道
内に噴出させるノズルをその煙道の内壁面に付設すると
ともに、該ノズルの先端を煙道内壁面に陥没して位置せ
しめ、前記混合器とノズルをガス供給管により連結させ
て成る排ガス脱硝用アンモニア注入装置。A mixer for mixing inert gas and ammonia gas is provided, and a nozzle for spouting a mixed gas of ammonia gas and inert gas into the exhaust gas flue is attached to the inner wall of the flue, and the tip of the nozzle is connected to the smoke pipe. An ammonia injection device for exhaust gas denitrification, which is recessed into the inner wall of the road, and the mixer and the nozzle are connected through a gas supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978022796U JPS5814979Y2 (en) | 1978-02-22 | 1978-02-22 | Ammonia injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978022796U JPS5814979Y2 (en) | 1978-02-22 | 1978-02-22 | Ammonia injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54139042U JPS54139042U (en) | 1979-09-27 |
| JPS5814979Y2 true JPS5814979Y2 (en) | 1983-03-25 |
Family
ID=28858213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978022796U Expired JPS5814979Y2 (en) | 1978-02-22 | 1978-02-22 | Ammonia injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814979Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3499576B2 (en) * | 1992-03-27 | 2004-02-23 | 東京瓦斯株式会社 | Method and apparatus for removing nitrogen oxides |
| JP3513162B2 (en) * | 1992-03-27 | 2004-03-31 | 東京瓦斯株式会社 | Nitrogen oxide removal method |
| JP3513163B2 (en) * | 1992-03-27 | 2004-03-31 | 東京瓦斯株式会社 | Method and apparatus for removing nitrogen oxides |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216470A (en) * | 1975-07-30 | 1977-02-07 | Babcock Hitachi Kk | Nox reducing agent feeding apparatus |
| JPS52135871A (en) * | 1976-05-10 | 1977-11-14 | Hitachi Ltd | Method and apparatus for decreasing nox in combustion exhaust gas |
-
1978
- 1978-02-22 JP JP1978022796U patent/JPS5814979Y2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216470A (en) * | 1975-07-30 | 1977-02-07 | Babcock Hitachi Kk | Nox reducing agent feeding apparatus |
| JPS52135871A (en) * | 1976-05-10 | 1977-11-14 | Hitachi Ltd | Method and apparatus for decreasing nox in combustion exhaust gas |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54139042U (en) | 1979-09-27 |
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