JPS58150418A - Soot blower for catalyst layer - Google Patents
Soot blower for catalyst layerInfo
- Publication number
- JPS58150418A JPS58150418A JP57030634A JP3063482A JPS58150418A JP S58150418 A JPS58150418 A JP S58150418A JP 57030634 A JP57030634 A JP 57030634A JP 3063482 A JP3063482 A JP 3063482A JP S58150418 A JPS58150418 A JP S58150418A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst layer
- blower
- jet pipe
- shaft
- shaft body
- 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.)
- Pending
Links
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Cleaning In General (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はスートブロワに係り、特に煙道中に配置した
脱硝用触媒層に付着したダストを除去するのに好適なス
ートブロワに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a soot blower, and particularly to a soot blower suitable for removing dust attached to a denitrification catalyst layer disposed in a flue.
発電所用大型ボイラ等の燃焼装置から排出された排ガス
中の窒素酸化物（ＮＯＸ ）を除去する方法の一つとし
て排ガス流れ上流側においてＮＨ声の還元剤を噴射し、
かつこの還元剤によりＮｏｗを還元除去する方法がある
。この方法は還元反応を効果的に行なわせるため還元剤
噴射部下流側の排ガス流中に触媒層を配置するのが一般
的である。この触媒層はダスト分の多いガス流中に配置
されるためダストの付着が激しくダストが付着すると排
ガス流れが阻害される外排ガスと触媒との接触が困難と
なり脱硝効率が低下する。このため触媒層はスートブロ
ワにより定期的に清掃する必要があるが、従来は長抜き
華し型もしくは定置回転式のスートプロワを用いていた
ため多数のスートブロワを必要とし、スートブロワ設置
部壁面の改造および補強が必要で、さらにスートブロワ
運転用の動力費も高価となるという問題があった。One of the methods for removing nitrogen oxides (NOX) from exhaust gas discharged from combustion equipment such as large boilers for power plants is to inject an NH reducing agent upstream of the exhaust gas flow.
There is also a method of reducing and removing Now using this reducing agent. In this method, in order to carry out the reduction reaction effectively, a catalyst layer is generally placed in the exhaust gas stream downstream of the reducing agent injection part. Since this catalyst layer is disposed in a gas stream containing a large amount of dust, the dust adheres to the catalyst layer heavily, and when the dust adheres, it becomes difficult for the external exhaust gas to come into contact with the catalyst, which obstructs the flow of the exhaust gas, and the denitrification efficiency decreases. For this reason, the catalyst layer needs to be cleaned regularly using a soot blower. Conventionally, long-shaped soot blowers or stationary rotary type soot blowers were used, which required a large number of soot blowers and required modification and reinforcement of the wall surface where the soot blowers were installed. In addition, there was a problem in that the power cost for operating the soot blower was also expensive.
この発明の目的は上述した問題点に鑑み少数の装置で触
媒層の清掃が効果的に行なえるスートプロワを提供する
ことにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a soot blower that can effectively clean a catalyst layer with a small number of devices.
要するにこの発明は回転および昇降可能なブロワ軸体と
、この軸体先端に略Ｔ字状に取り付けた噴射管とから成
り、さらに触媒層にはスートブロワ通過用の隙間を形成
することにより一基もしくは小数基で多段の触媒層を清
掃し得るスートブロワに関する。In short, this invention consists of a blower shaft that can be rotated and raised and lowered, and an injection pipe attached to the tip of the shaft in a substantially T-shape. The present invention relates to a soot blower that can clean multi-stage catalyst layers with a small number of units.
以下この発明の実施例を図面により説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図において、１は重力方向に立設したブロワ軸体で
あり、２はこのブロワ軸体の昇降と回転を行なう軸体駆
動・装置であり、排ガス通路の一部を形成する脱硝装置
ケーシング３の天井部に配置しである。４はブロワ軸体
３の下端部にこの軸体３と直、交するよう取り付けた噴
射管であり、触媒層５に向って複数の噴射孔が形成しで
ある。一方プロワ軸体１の上端部にはこの軸体の回転を
許容しかつ気密にシールするシール部゛材６を介して媒
体供給管７が接続している。In Fig. 1, 1 is a blower shaft that stands upright in the direction of gravity, 2 is a shaft drive/device that raises, lowers, and rotates the blower shaft, and a denitrification device casing that forms part of the exhaust gas passage. It is placed on the ceiling of No. 3. Reference numeral 4 denotes an injection pipe attached to the lower end of the blower shaft 3 so as to be perpendicular to the shaft 3, and a plurality of injection holes are formed toward the catalyst layer 5. On the other hand, a medium supply pipe 7 is connected to the upper end of the blower shaft 1 through a seal member 6 that allows rotation of the shaft and provides an airtight seal.
この供給管７はブロワ軸体の昇降に対応し得るよ゛う可
撓性の材料で構成しである。８はこの供給管７を支持す
る支持架である。This supply pipe 7 is made of a flexible material that can accommodate the elevation and descent of the blower shaft. 8 is a support rack that supports this supply pipe 7.
以上の装置において、噴射管４は常時はテーシング３の
天井部近傍まで引き上げておき触媒、層に流入する排ガ
ス流れを乱さないようにしておく。すなわち常時は第２
図の如く排ガスＧはガスダクト３１を経て脱硝装置ナー
シング３に至り、下降流となって触媒層５および１０を
通過し脱硝される。In the above-described apparatus, the injection pipe 4 is always raised to the vicinity of the ceiling of the taping 3 so as not to disturb the flow of exhaust gas flowing into the catalyst and bed. In other words, it is always the second
As shown in the figure, the exhaust gas G passes through the gas duct 31, reaches the denitrification device nursing 3, becomes a downward flow, passes through the catalyst layers 5 and 10, and is denitrified.
触媒層のダスト除去を行なう必要が生じた場合には軸体
駆動装置２をＯＮとしてブロワ軸体１および噴射管４を
触媒層５の上面近傍まで下降させ、所定の位置に達した
ならば下降を停止すると共に回転に切り換え噴射管４を
回転させる。さらに噴射管４の回転と共に弁１１を開と
して蒸気、空気等の噴射媒体１２を触媒層５に噴射する
。噴射媒体１２は噴射管４を回転させながら噴射される
ため触媒層５に付着したダストを万遍なく除去する。When it becomes necessary to remove dust from the catalyst layer, turn on the shaft drive device 2 to lower the blower shaft 1 and injection pipe 4 to near the upper surface of the catalyst layer 5, and when they reach a predetermined position, lower the blower shaft 1 and the injection pipe 4. At the same time, the injection pipe 4 is switched to rotation and the injection pipe 4 is rotated. Further, as the injection pipe 4 rotates, the valve 11 is opened to inject an injection medium 12 such as steam or air into the catalyst layer 5. Since the injection medium 12 is injected while rotating the injection pipe 4, dust adhering to the catalyst layer 5 is evenly removed.
次に触媒層５のダスト除去が完了したならば触媒層１０
の清掃に移る。この場合、先ず噴射管４の回転を停止し
、噴射管４を触媒層５に形成した隙間５ａに位置させる
。続いてプロ７４体１および噴射管４をこの隙間５ａを
介して下降させ触媒層１０近傍の所定の位置に配置し、
（第１図の符号４′の位置）噴射管４を再び回転させ前
述と同様の方法によりダストの除去を行なう。Next, when the dust removal from the catalyst layer 5 is completed, the catalyst layer 10
Move on to cleaning. In this case, first, the rotation of the injection pipe 4 is stopped, and the injection pipe 4 is positioned in the gap 5a formed in the catalyst layer 5. Subsequently, the professional 74 body 1 and the injection pipe 4 are lowered through this gap 5a and placed at a predetermined position near the catalyst layer 10,
(Position 4' in FIG. 1) The injection pipe 4 is rotated again and the dust is removed in the same manner as described above.
なおダスト除去が完了したならば前述と逆の方□法で噴
射管４およびブロワ軸体１を引き上げる。When the dust removal is completed, the injection pipe 4 and the blower shaft 1 are pulled up using the reverse method described above.
以上触媒層が２段の場合を例として説明したがこの装置
はこれに限定されるものではなく、三段以上の触媒層の
清掃も可能である。但し、この場合下段の触媒層１０に
対しても噴射管４およびブロワ軸体下降用の隙間１０ａ
を形成する必要があるが、この隙間１０ａは平面より見
た場合隙間５ａと直交する位置に形成し排ガスがこれら
隙間５ａ、ｌｏａ’を素通りしてしまうのを防止する。Although the case where the catalyst layer is in two stages has been described above as an example, this apparatus is not limited to this, and it is also possible to clean catalyst layers in three or more stages. However, in this case, there is also a gap 10a for lowering the injection pipe 4 and the blower shaft for the lower catalyst layer 10.
However, this gap 10a is formed at a position perpendicular to the gap 5a when viewed from a plane to prevent exhaust gas from passing through the gaps 5a and loa'.
この発明を実施することにより一基もしくは少数基の装
置で触媒層の清掃を良好に行なうことができ経済的であ
る。By implementing this invention, the catalyst layer can be cleaned well with one or a small number of devices, which is economical.
第１図はこの発明に係るスートブロワを設置した脱硝装
置の断面図、第２図は第１図に示すスートブロワの作動
状態を示す脱硝装置の斜視図である。
１・・・・・・ブロワ軸体
２・・・・・・軸体駆動装置
４・・・・・・噴射管
５．１０・・・・・・触媒層
５ａ、 ｌｏａ・・・・・・隙間FIG. 1 is a sectional view of a denitrification device equipped with a soot blower according to the present invention, and FIG. 2 is a perspective view of the denitrification device showing the operating state of the soot blower shown in FIG. 1...Blower shaft 2...Shaft drive device 4...Injection pipe 5.10...Catalyst layer 5a, loa... gap
Claims (1)
トを除去するものにおいて、軸心を鉛直方向にするブロ
ワ軸体と、このブロワ軸体を回転させかつ昇降させる軸
体駆動装置と、ブロワ軸体と直交するよう同軸体の下端
部に取り付けされかつ噴射媒体を噴射する管体とから成
り、噴射管およびブロワ軸体を触媒層に形成した隙間を
通過可能に設けることにより複数段の触媒のダスト除去
を行なうことを特徴とする触媒層用スートブロワ。
−1. In a device that removes dust attached to catalyst layers installed in multiple stages in the vertical direction, a blower shaft whose axis is vertically oriented, a shaft drive device that rotates and raises and lowers this blower shaft, and a blower It consists of a tube that is attached to the lower end of the coaxial body perpendicularly to the shaft body and injects the injection medium, and the injection pipe and the blower shaft are provided so that they can pass through the gap formed in the catalyst layer, thereby generating a multi-stage catalyst. A soot blower for a catalyst layer, which is characterized by removing dust.
−
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57030634A JPS58150418A (en) | 1982-03-01 | 1982-03-01 | Soot blower for catalyst layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57030634A JPS58150418A (en) | 1982-03-01 | 1982-03-01 | Soot blower for catalyst layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58150418A true JPS58150418A (en) | 1983-09-07 |
Family
ID=12309269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57030634A Pending JPS58150418A (en) | 1982-03-01 | 1982-03-01 | Soot blower for catalyst layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58150418A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4231453C1 (en) * | 1992-09-19 | 1993-08-12 | Metallgesellschaft Ag, 6000 Frankfurt, De | |
| EP0824973A2 (en) * | 1996-08-19 | 1998-02-25 | Siemens Aktiengesellschaft | Method and installation for cleaning a contaminated object |
| CN105771647A (en) * | 2016-05-16 | 2016-07-20 | 长沙深湘通用机器有限公司 | Denitrification reaction device for denitrification |
| JP2018112183A (en) * | 2016-10-18 | 2018-07-19 | マン・ディーゼル・アンド・ターボ・エスイー | Exhaust gas aftertreatment system and internal combustion engine |
-
1982
- 1982-03-01 JP JP57030634A patent/JPS58150418A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4231453C1 (en) * | 1992-09-19 | 1993-08-12 | Metallgesellschaft Ag, 6000 Frankfurt, De | |
| EP0824973A2 (en) * | 1996-08-19 | 1998-02-25 | Siemens Aktiengesellschaft | Method and installation for cleaning a contaminated object |
| EP0824973A3 (en) * | 1996-08-19 | 1998-12-02 | Siemens Aktiengesellschaft | Method and installation for cleaning a contaminated object |
| CN105771647A (en) * | 2016-05-16 | 2016-07-20 | 长沙深湘通用机器有限公司 | Denitrification reaction device for denitrification |
| JP2018112183A (en) * | 2016-10-18 | 2018-07-19 | マン・ディーゼル・アンド・ターボ・エスイー | Exhaust gas aftertreatment system and internal combustion engine |
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