JPH08126820A - Waste gas denitration device and method for injecting denitrating reducing agent - Google Patents
Waste gas denitration device and method for injecting denitrating reducing agentInfo
- Publication number
- JPH08126820A JPH08126820A JP6267100A JP26710094A JPH08126820A JP H08126820 A JPH08126820 A JP H08126820A JP 6267100 A JP6267100 A JP 6267100A JP 26710094 A JP26710094 A JP 26710094A JP H08126820 A JPH08126820 A JP H08126820A
- Authority
- JP
- Japan
- Prior art keywords
- reducing agent
- aqueous solution
- exhaust gas
- denitration
- agent aqueous
- 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
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は脱硝装置の還元剤水溶液
の注入装置及びそれによる注入方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for injecting a reducing agent aqueous solution in a denitration apparatus and an injection method using the same.
【０００２】[0002]
【従来の技術】従来の脱硝装置の系統を図５，図６に示
してある。まず図５において、ガスタービン、ガスエン
ジン及びディーゼルエンジン等の排ガス源１より排出さ
れる排ガスは、排ガスダクト内に設けられた微噴霧ノズ
ル９より噴霧された還元剤水溶液タンク４からの還元剤
と混合された後、脱硝反応器２内の触媒と接触し、ＮＯ
x が還元された後、煙突３より大気へ放出される。2. Description of the Related Art A conventional denitration system is shown in FIGS. First, in FIG. 5, the exhaust gas discharged from the exhaust gas source 1 such as a gas turbine, a gas engine, and a diesel engine is reduced by the reducing agent from the reducing agent aqueous solution tank 4 sprayed from the fine spray nozzle 9 provided in the exhaust gas duct. After being mixed, the catalyst in the denitration reactor 2 is contacted and NO
After x is reduced, it is released from the chimney 3 to the atmosphere.
【０００３】この還元剤は尿素等の水溶液を還元剤水溶
液タンク４に貯蔵したものを定量供給ポンプ５により微
噴霧ノズル９へ供給するものであって、微噴霧ノズル９
内へ別系統で空気又は蒸気８が供給されて微噴霧されて
いる。This reducing agent is one in which an aqueous solution of urea or the like is stored in a reducing agent aqueous solution tank 4 and is supplied to the fine spray nozzle 9 by the constant amount supply pump 5.
Air or steam 8 is supplied into the inside by a separate system and finely sprayed.
【０００４】図６に示した装置では、還元剤の供給系に
流量制御弁７を設けたもので、これによって流量を制御
しつつ還元剤水溶液を供給するものでその他の構成は図
５に示したものと同じである。また、従来の脱硝装置で
還元剤水溶液噴霧のために用いる微噴霧ノズルは、図７
に示すように還元剤水溶液と空気又は蒸気の流路が別に
なっていて、これらがノズル先端部で混合し、噴霧され
るようにした二流体型である。The apparatus shown in FIG. 6 is provided with a flow rate control valve 7 in the reducing agent supply system, which supplies the reducing agent aqueous solution while controlling the flow rate, and the other construction is shown in FIG. It is the same as Further, the fine spray nozzle used for spraying the reducing agent aqueous solution in the conventional denitration device is shown in FIG.
As shown in (2), the reducing agent aqueous solution is separated from the air or vapor flow paths, and these are mixed at the nozzle tip to be sprayed, which is a two-fluid type.
【０００５】[0005]
【発明が解決しようとする課題】従来の脱硝装置は前記
した構成を有しており、脱硝反応器２の上流に還元剤水
溶液を添加するノズル９は、良好な脱硝性能を保つため
排ガス中への還元剤の良好な拡散を計る必要があり、還
元剤水溶液を微噴霧する（平均粒子径で１００μ程度以
下）ノズルが使われている。The conventional denitration apparatus has the above-mentioned structure, and the nozzle 9 for adding the reducing agent aqueous solution upstream of the denitration reactor 2 is introduced into the exhaust gas in order to maintain good denitration performance. It is necessary to measure the good diffusion of the reducing agent, and a nozzle that finely sprays the reducing agent aqueous solution (with an average particle size of about 100 μ or less) is used.
【０００６】しかも排ガス源の運転状態によってその還
元剤水溶液の必要供給量は、図８に示すように通常、２
０〜１００％の範囲で制御する必要があり、定められた
数量のノズルで噴霧を行う場合のターンダウン比をカバ
ーするために二流体ノズルを採用せざるを得なかったの
である。Moreover, depending on the operating state of the exhaust gas source, the required supply amount of the reducing agent aqueous solution is usually 2 as shown in FIG.
It was necessary to control in the range of 0 to 100%, and it was unavoidable to adopt the two-fluid nozzle in order to cover the turndown ratio when spraying with a predetermined number of nozzles.
【０００７】従って、空気又は蒸気を供給するラインが
必要であるばかりでなく、ノズル先端部におけるアシス
ト媒体並びに還元剤水溶液の噴口が小さいためそれらの
媒体中の異物によるその噴口の閉塞もしばしば発生して
いた。このような従来技術が記載された文献として特開
平５−２６９３５１号公報及び特開平５−２６９３４９
号公報がある。Therefore, not only a line for supplying air or steam is required, but also the nozzles of the assist medium and the reducing agent aqueous solution at the tip of the nozzle are small in size, so that foreign matter in these media often causes clogging of the nozzle. Was there. As a document in which such a conventional technique is described, JP-A-5-269351 and JP-A-5-269349 are disclosed.
There is a gazette.
【０００８】また、還元剤水溶液として、尿素等の固体
還元剤の水溶液を使用する場合は、その水溶液は輸送及
び貯蔵等のコスト低減のため飽和溶液に近い濃度の状態
で供給されるため、高温にさらされるノズル部で水分が
蒸発するのに伴い還元剤の再結晶化又は重合によってノ
ズルが閉塞する問題が生ずる。When an aqueous solution of a solid reducing agent such as urea is used as the reducing agent aqueous solution, the aqueous solution is supplied at a concentration close to that of a saturated solution in order to reduce costs such as transportation and storage. As water evaporates in the nozzle portion exposed to the air, there is a problem that the nozzle is clogged due to recrystallization or polymerization of the reducing agent.
【０００９】特に脱硝開始前（還元剤注入開始前）にお
いてノズルが高温となっているところに還元剤水溶液が
供給されて来ると瞬時に前記の現象が発生する。また、
脱硝停止時（還元剤注入停止後）にもノズル及び導管内
に残存する熱によって還元剤水溶液から水分が蒸発し同
様にノズルの閉塞をきたすことはよく知られている。In particular, when the reducing agent aqueous solution is supplied to the place where the nozzle is at a high temperature before the denitration starts (before the reducing agent injection starts), the above phenomenon occurs instantly. Also,
It is well known that even when the denitration is stopped (after the injection of the reducing agent is stopped), the water remaining in the nozzle and the conduit evaporates the water from the aqueous solution of the reducing agent, and similarly the nozzle is clogged.
【００１０】本発明は、排ガスに還元剤水溶液を添加し
たのち触媒に接触させて排ガス中の窒素酸化物を還元す
る排ガス脱硝装置において、微噴霧ノズルの閉塞を起こ
すことなく排ガス脱硝を行えるようにした、排ガス脱硝
装置を提供することを課題としている。According to the present invention, in an exhaust gas denitration apparatus in which a reducing agent aqueous solution is added to exhaust gas and then contacted with a catalyst to reduce nitrogen oxides in the exhaust gas, exhaust gas denitration can be performed without causing clogging of a fine spray nozzle. Another object is to provide an exhaust gas denitration device.
【００１１】また、本発明は、そのような排ガス脱硝装
置において、高温による還元剤の固化を防いで微噴霧ノ
ズルの閉塞を防止可能とした、脱硝還元剤の注入方法を
提供することを課題としている。Another object of the present invention is to provide a method for injecting a denitration reducing agent in such an exhaust gas denitration apparatus, which can prevent the reducing agent from solidifying due to high temperature and can prevent the fine spray nozzle from being blocked. There is.
【００１２】[0012]
【課題を解決するための手段及び作用】本発明による脱
硝装置では、前記課題を解決するため、還元剤水溶液供
給ラインの途中に還元剤水溶液の最大供給量の重量比で
３倍以上の容量を有する給水ラインを接続すると共に、
その還元剤水溶液供給ラインで導かれた水溶液を排ガス
中に噴霧する一流体型微噴霧ノズルを設けた構成を採用
する。In order to solve the above problems, in the denitration apparatus according to the present invention, in order to solve the above-mentioned problems, a capacity of 3 times or more the weight ratio of the maximum supply amount of the reducing agent aqueous solution is provided in the middle of the reducing agent aqueous solution supply line. While connecting the water supply line we have,
The one-fluid type fine spray nozzle for spraying the aqueous solution introduced through the reducing agent aqueous solution supply line into the exhaust gas is adopted.
【００１３】このように構成された還元剤水溶液供給ラ
インを備えた本発明の排ガス脱硝装置によれば、還元剤
水溶液にその最大量の３倍以上の水を付加して一流体型
ノズルの使用を可能として、装置を簡単にすると共に異
物によるノズルの閉塞が生じにくくする。According to the exhaust gas denitration apparatus of the present invention equipped with the reducing agent aqueous solution supply line configured as described above, the one-fluid type nozzle is used by adding 3 times or more of the maximum amount of water to the reducing agent aqueous solution. As much as possible, the apparatus is simplified and the foreign matter is less likely to be clogged with the nozzle.
【００１４】また、このように還元剤水溶液の最大供給
量の３倍以上を供給出来る給水ラインを還元剤の供給ラ
インに付加することにより、ノズル噴口径もほぼ２倍以
上に大きくなって、一流体型ノズルを使用してもノズル
の閉塞が生じにくくなる。Further, by adding a water supply line capable of supplying at least three times the maximum supply amount of the reducing agent aqueous solution to the reducing agent supply line, the diameter of the nozzle injection port is almost doubled and the first class Even if a body type nozzle is used, the nozzle is less likely to be blocked.
【００１５】更に、本発明の脱硝装置によれば、前記し
た給水ラインを付加することにより、排ガス源の運転状
態に於けるターンダウン比を満足して、一流体型ノズル
の対応可能な見掛けのターンダウン比７０％〜１００％
にすることが出来る。Further, according to the denitration apparatus of the present invention, by adding the above-mentioned water supply line, the turn-down ratio in the operating state of the exhaust gas source is satisfied, and the apparent turn of the one-fluid type nozzle that can be handled is satisfied. Down ratio 70% to 100%
Can be
【００１６】また、本発明は、前記した構成の脱硝装置
において、還元剤水溶液の供給開始前１５秒間以上、給
水ラインのみによる給水を微噴霧ノスルに対し予じめ行
うと共に、還元剤水溶液の供給停止後１５秒間以上、給
水ラインのみによる給水を微噴霧ノズルに対して行うよ
うにした脱硝還元剤の注入方法を提供する。According to the present invention, in the denitration apparatus having the above-mentioned structure, the fine spray nozzle is preliminarily supplied with water only by the water supply line for 15 seconds or more before the supply of the reducing agent aqueous solution is started, and the reducing agent aqueous solution is supplied. Provided is a denitration reducing agent injection method in which water is supplied only to a water supply line to a fine spray nozzle for 15 seconds or more after stopping.
【００１７】このように脱硝装置起動前１５秒間以上給
水ラインのみにより給水を予め行うことにより、ノズル
部を冷却すると共に、脱硝装置停止後、１５秒間以上給
水ラインのみによる給水を継続することにより、残存す
る還元剤水溶液をパージする。これによって、微噴霧ノ
ズルの閉塞を起こすことなく還元剤水溶液の噴霧を行わ
せて排ガス脱硝を行うことができる。As described above, by previously supplying water only by the water supply line for 15 seconds or more before the denitration device is activated, the nozzle portion is cooled, and after the denitration device is stopped, water is supplied only by the water supply line for 15 seconds or more. Purge remaining aqueous reducing agent. As a result, the exhaust gas denitration can be performed by spraying the reducing agent aqueous solution without causing the fine spray nozzle to be blocked.
【００１８】[0018]
【実施例】以下、本発明による排ガス脱硝装置、及びそ
の脱硝装置における脱硝還元剤の注入方法について図示
した実施例に基づいて具体的に説明する。なお、以下の
実施例において、図５、図６に示した従来の装置と同じ
構成の部分には説明を簡潔にするため同じ符号を付して
ある。EXAMPLE An exhaust gas denitration apparatus according to the present invention and a method for injecting a denitration reducing agent in the denitration apparatus will be specifically described below with reference to the illustrated examples. In the following embodiments, the same components as those of the conventional apparatus shown in FIGS. 5 and 6 are designated by the same reference numerals for the sake of simplicity.
【００１９】（第１実施例）本発明の第１実施例による
脱硝装置の系統を図１に示してある。図１において、ガ
スタービン、ガスエンジン及びディーゼルエンジン等の
排ガス源１より排出された排ガスは、ダクトを経て脱硝
装置２へ導かれる。(First Embodiment) FIG. 1 shows the system of the denitration apparatus according to the first embodiment of the present invention. In FIG. 1, exhaust gas discharged from an exhaust gas source 1 such as a gas turbine, a gas engine and a diesel engine is guided to a denitration device 2 via a duct.
【００２０】このダクトには、一流体型の微噴霧ノズル
１０が設けられていて、排ガスは噴霧された還元剤水溶
液と混合し、後流に設置された脱硝反応器２内の触媒と
接触し、ＮＯx が還元された後、煙突３より大気へ放出
される。In this duct, a one-fluid type fine spray nozzle 10 is provided, and the exhaust gas is mixed with the sprayed reducing agent aqueous solution and comes into contact with the catalyst in the denitration reactor 2 installed downstream, After the NO x is reduced, it is released from the chimney 3 to the atmosphere.
【００２１】この還元剤水溶液は尿素等の固体還元剤の
水溶液であって、輸送及び貯蔵等のコスト低減のため飽
和溶液に近い濃度として、還元剤水溶液タンク４に貯蔵
されている。この還元剤は、定量供給ポンプ５により供
給ライン１１を経て微噴霧ノズル１０へ供給される。ま
た、この供給ライン１１の途中には、給水ライン１２が
接続されている。給水ライン１２は、還元剤水溶液の最
大供給量の重量比で３倍以上の容量を有するラインとし
て構成されている。This reducing agent aqueous solution is an aqueous solution of a solid reducing agent such as urea, and is stored in the reducing agent aqueous solution tank 4 at a concentration close to that of a saturated solution in order to reduce costs such as transportation and storage. This reducing agent is supplied to the fine spray nozzle 10 via the supply line 11 by the fixed amount supply pump 5. A water supply line 12 is connected in the middle of the supply line 11. The water supply line 12 is configured as a line having a capacity three times or more the weight ratio of the maximum supply amount of the reducing agent aqueous solution.
【００２２】この図１の装置では、図５、図６に示した
ように従来の脱硝装置に設けられていた空気又は蒸気に
よるアシストラインを廃止している。また、従来の二流
体型微噴霧ノズルの使用をやめ、既に説明したように一
流体型微噴霧ノズル１０を使用している。In the apparatus of FIG. 1, as shown in FIGS. 5 and 6, the assist line for air or steam provided in the conventional denitration apparatus is eliminated. Further, the use of the conventional two-fluid type fine spray nozzle is stopped and the one-fluid type fine spray nozzle 10 is used as already described.
【００２３】その一流体型微噴霧ノズル１０の構成を図
３に示してある。この一流体型微噴霧ノズルは、本体１
４に水溶液の流路を有し、その途中にスワラー１６及び
先端部にオリフィス１５を挿入し、キャップ１３で固定
して構成されている。The structure of the one-fluid type fine spray nozzle 10 is shown in FIG. This one-fluid type fine spray nozzle is used in the main body 1
4 has a flow path for the aqueous solution, and a swirler 16 and an orifice 15 are inserted in the middle of the flow path and fixed with a cap 13.
【００２４】以上説明した第１実施例による脱硝装置で
は、その還元剤水溶液供給ライン１１の最大供給量の３
倍以上の容量をもつ給水ライン１２が設けられていて、
この給水ライン１２から還元剤水溶液の最大量の３倍以
上の水を付加することにより、一流体型微噴霧ノズルで
も良好な微噴霧特性を有する噴射量レンジまで噴射量を
増加可能である。これによって微噴霧ノズル１０からの
還元剤水溶液の噴霧特性を図４のように変更することが
できる。In the denitration apparatus according to the first embodiment described above, the maximum supply amount of the reducing agent aqueous solution supply line 11 is 3
There is a water supply line 12 with more than double the capacity,
By adding 3 times or more of the maximum amount of the reducing agent aqueous solution from the water supply line 12, it is possible to increase the injection amount up to the injection amount range having good fine spray characteristics even with the one-fluid type fine spray nozzle. As a result, the spray characteristics of the reducing agent aqueous solution from the fine spray nozzle 10 can be changed as shown in FIG.
【００２５】図４は横軸に排ガス源運転負荷を、縦軸に
微噴霧ノズル対応レンジを表わすものであって、これに
よれば、排ガス源の負荷が２０％と、１００％のとき、
微噴霧ノズル噴射量は８０％と、１００％としている。
これに対し、還元剤水溶液供給量は６％と３０％となっ
ている。FIG. 4 shows the exhaust gas source operating load on the horizontal axis and the fine spray nozzle corresponding range on the vertical axis. According to this, when the exhaust gas source load is 20% and 100%,
The fine spray nozzle injection amount is 80% and 100%.
On the other hand, the supply amount of the reducing agent aqueous solution is 6% and 30%.
【００２６】（第２実施例）本発明による脱硝装置の第
２実施例を図２に示してある。図２に示した第２実施例
では還元剤水溶液の供給ライン１１にポンプ６と流量制
御弁７を設けたものであって、還元剤水溶液の供給量を
制御しつつ排ガス中に供給できるものである。その他の
構成と作用は図１に示した第１実施例の装置と同じであ
る。以上、本発明を図示した実施例に基づいて具体的に
説明したが、本発明がこれらの実施例に限定されず特許
請求の範囲に示す本発明の範囲内で、その具体的構造に
種々の変更を加えてよいことはいうまでもない。(Second Embodiment) A second embodiment of the denitration apparatus according to the present invention is shown in FIG. In the second embodiment shown in FIG. 2, the reducing agent aqueous solution supply line 11 is provided with a pump 6 and a flow rate control valve 7, and the reducing agent aqueous solution can be supplied into the exhaust gas while controlling the supply amount. is there. Other configurations and operations are the same as those of the apparatus of the first embodiment shown in FIG. The present invention has been specifically described above based on the illustrated embodiments, but the present invention is not limited to these embodiments, and within the scope of the present invention shown in the claims, various concrete structures thereof It goes without saying that changes may be made.
【００２７】[0027]
【発明の効果】以上説明したように、本発明の脱硝装置
では排ガス中に還元剤水溶液を噴霧する噴霧ノズルを排
ガス源の運転状態におけるターンダウン比を７０％〜１
００％にすることができる一流体型微噴霧ノズルとする
と共に、還元剤水溶液の最大供給量の３倍以上を供給で
きる給水ラインを付加した。このことによりノズル噴口
径がほぼ２倍以上とすることができるので、ノズル閉塞
がなくなった。As described above, in the denitration apparatus of the present invention, the spray nozzle for spraying the reducing agent aqueous solution into the exhaust gas has a turndown ratio of 70% to 1 in the operating state of the exhaust gas source.
In addition to a one-fluid type fine spray nozzle capable of achieving 100%, a water supply line capable of supplying at least three times the maximum supply amount of the reducing agent aqueous solution was added. As a result, the nozzle injection port diameter can be almost doubled, so that the nozzle is not clogged.
【００２８】また、この脱硝装置において、脱硝装置起
動前に給水ラインのみにより給水を行うことによりノズ
ル部を冷却すれば還元剤の高温による固化が防げ、閉塞
も防げる。更に脱硝装置停止後も給水ラインのみにより
給水を行うことにより残存する還元剤水溶液をパージす
れば、還元剤の固化を防ぎ又、閉塞も防止できる。In this denitration apparatus, if the nozzle portion is cooled by supplying water only by the water supply line before starting the denitration apparatus, the reducing agent can be prevented from solidifying due to high temperature and can be prevented from being blocked. Further, by supplying water only through the water supply line after the denitration device is stopped to purge the remaining reducing agent aqueous solution, it is possible to prevent the reducing agent from solidifying and prevent clogging.
【図１】本発明の第１実施例に係る脱硝装置の系統図。FIG. 1 is a system diagram of a denitration device according to a first embodiment of the present invention.
【図２】本発明の第２実施例に係る脱硝装置例の系統
図。FIG. 2 is a system diagram of an example of a denitration device according to a second embodiment of the present invention.
【図３】本発明の脱硝装置で用いる一流体型微噴霧ノズ
ルの例を示す構造図。FIG. 3 is a structural diagram showing an example of a one-fluid type fine spray nozzle used in the denitration device of the present invention.
【図４】本発明の脱硝装置で用いる一流体型微噴霧ノズ
ルの特性図。FIG. 4 is a characteristic diagram of a one-fluid type fine spray nozzle used in the denitration device of the present invention.
【図５】従来の脱硝装置の系統図。FIG. 5 is a system diagram of a conventional denitration device.
【図６】従来の別の脱硝装置の系統図。FIG. 6 is a system diagram of another conventional denitration device.
【図７】従来の二流体型微噴霧ノズルの構成図。FIG. 7 is a configuration diagram of a conventional two-fluid type fine spray nozzle.
【図８】従来の脱硝装置で用いていた二流体型微噴霧ノ
ズルの特性図。FIG. 8 is a characteristic diagram of a two-fluid type fine spray nozzle used in a conventional denitration device.
１ 排ガス源 ２ 脱硝反応器 ４ 還元剤水溶液タンク ５ 定量供給ポンプ ７ 流量制御弁 １０ 一流体型微噴霧ノズル １１ 供給ライン １２ 給水ライン １３ キャップ １４ 本体 １５ オリフィス １６ スワラー DESCRIPTION OF SYMBOLS 1 Exhaust gas source 2 Denitration reactor 4 Reducing agent aqueous solution tank 5 Fixed amount supply pump 7 Flow control valve 10 One-fluid type fine spray nozzle 11 Supply line 12 Water supply line 13 Cap 14 Main body 15 Orifice 16 Swirler
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 53/34 １２９ Ｂ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location B01D 53/34 129 B
Claims (2)
媒に接触させて同排ガス中の窒素酸化物を還元する排ガ
ス脱硝装置において、還元剤水溶液供給ラインの途中に
前記還元剤水溶液の最大供給量の重量比で３倍以上の容
量を有する給水ラインを接続すると共に、前記還元剤水
溶液供給ラインで導かれた水溶液を排ガス中に噴霧する
一流体型微噴霧ノズルを設けたことを特徴とする排ガス
脱硝装置。1. In an exhaust gas denitration apparatus for adding a reducing agent aqueous solution to exhaust gas and then contacting a catalyst to reduce nitrogen oxides in the exhaust gas, a maximum supply amount of the reducing agent aqueous solution is provided in the middle of a reducing agent aqueous solution supply line. Exhaust gas denitration, characterized in that a one-fluid type fine spray nozzle for spraying the aqueous solution guided by the reducing agent aqueous solution supply line into the exhaust gas is provided while connecting a water supply line having a capacity of 3 times or more the weight ratio of apparatus.
以上、前記給水ラインのみによる給水を前記微噴霧ノズ
ルに対して予じめ行うと共に、前記還元剤水溶液の供給
停止後１５秒間以上、前記給水ラインのみによる給水を
前記微噴霧ノズルに対して行うことを特徴とする請求項
１記載の排ガス脱硝装置における脱硝還元剤の注入方
法。2. The above-mentioned fine spray nozzle is preliminarily supplied with water for only 15 seconds or more before the supply of the reducing agent aqueous solution is started, and 15 seconds or more after the supply of the reducing agent aqueous solution is stopped. The method for injecting a denitration reducing agent in an exhaust gas denitration apparatus according to claim 1, wherein water is supplied to the fine spray nozzle only through a water supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26710094A JP3396311B2 (en) | 1994-10-31 | 1994-10-31 | Exhaust gas denitration apparatus and method for injecting the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26710094A JP3396311B2 (en) | 1994-10-31 | 1994-10-31 | Exhaust gas denitration apparatus and method for injecting the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08126820A true JPH08126820A (en) | 1996-05-21 |
| JP3396311B2 JP3396311B2 (en) | 2003-04-14 |
Family
ID=17440062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26710094A Expired - Fee Related JP3396311B2 (en) | 1994-10-31 | 1994-10-31 | Exhaust gas denitration apparatus and method for injecting the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3396311B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824841A (en) * | 2012-08-21 | 2012-12-19 | 杨建华 | Selective non-catalytic reduction (SNCR) denitration system of coal-fired circulating fluidized bed boiler |
-
1994
- 1994-10-31 JP JP26710094A patent/JP3396311B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824841A (en) * | 2012-08-21 | 2012-12-19 | 杨建华 | Selective non-catalytic reduction (SNCR) denitration system of coal-fired circulating fluidized bed boiler |
| CN102824841B (en) * | 2012-08-21 | 2015-04-29 | 郑州电力高等专科学校 | Selective non-catalytic reduction (SNCR) denitration system of coal-fired circulating fluidized bed boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3396311B2 (en) | 2003-04-14 |
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