JPH0523543A - Denitration apparatus - Google Patents
Denitration apparatusInfo
- Publication number
- JPH0523543A JPH0523543A JP3178147A JP17814791A JPH0523543A JP H0523543 A JPH0523543 A JP H0523543A JP 3178147 A JP3178147 A JP 3178147A JP 17814791 A JP17814791 A JP 17814791A JP H0523543 A JPH0523543 A JP H0523543A
- Authority
- JP
- Japan
- Prior art keywords
- reducing agent
- denitration
- exhaust gas
- gas
- ammonia
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Exhaust Gas After Treatment (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は脱硝装置に関し、さらに
詳しくは安全かつ取扱いが容易な固体還元剤を用いて脱
硝反応を行うのに好適な脱硝装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a denitration device, and more particularly to a denitration device suitable for carrying out a denitration reaction using a solid reducing agent which is safe and easy to handle.
【０００２】[0002]
【従来の技術】発電所、各種工場、自動車などから排出
される排煙中のＮＯｘ（窒素酸化物）は、光化学スモッ
グの原因物質であり、その効果的な除去方法として、ア
ンモニア（ＮＨ3 ）を還元剤とした選択的接触還元法に
よる排煙脱硝装置が火力発電所を中心に幅広く用いられ
ている。2. Description of the Related Art NOx (nitrogen oxide) in flue gas emitted from power plants, various factories, automobiles, etc. is a causative substance of photochemical smog, and ammonia (NH 3 ) can be effectively removed. A flue gas denitration device using the selective catalytic reduction method with a reducing agent is widely used mainly in thermal power plants.
【０００３】最近は、ディーゼルエンジン、ガスタービ
ン等を利用したコージェネレーションシステムが都心部
を中心として増加しており、これらシステムに対しても
ＮＯｘの排出規制が適用され、かつ地域によっては強化
されているため、大型プラント同様に排煙脱硝装置の設
置が急務となっている。このような小規模施設用脱硝装
置はビル等人口密集地で使用されるため、液化ＮＨ3 の
使用は困難であり、液化ＮＨ3 の代わりに取扱いが容易
でかつ安全な尿素、シアヌル酸、メラミン、炭酸水素ア
ンモニウム等の固体還元剤を使用する方法が注目されて
いる。この場合、排ガス中の窒素酸化物と固体還元剤と
を反応させるためには、固体還元剤を充分に気化して排
ガスと均一に混合することが必要となる。Recently, cogeneration systems using diesel engines, gas turbines, etc. have been increasing mainly in central Tokyo, and NOx emission regulations have been applied to these systems as well, and have been strengthened in some regions. Therefore, it is an urgent task to install a flue gas denitration device as in large plants. Since such small facilities denitration apparatus for use in buildings populated areas, the use of liquefied NH 3 is difficult, easy and safe urea handling instead of liquefied NH 3, cyanuric acid, melamine , A method using a solid reducing agent such as ammonium hydrogen carbonate has been drawing attention. In this case, in order to react the nitrogen oxide in the exhaust gas with the solid reducing agent, it is necessary to sufficiently vaporize the solid reducing agent and uniformly mix it with the exhaust gas.
【０００４】固体還元剤を使用する方法の一つとして、
還元剤の水溶液を直接排ガス中に噴霧して蒸発させる方
法が知られている（特開昭５３−６２７７２号公報、特
開昭５３−６４１０２号公報、特開昭５３−１１２２７
３号公報、特開昭５３−１１５６５８号公報等）。しか
しながら、この方法では、水溶液の完全蒸発の点につい
て配慮されていないため、例えば尿素水溶液の場合、該
水溶液を煙道に投入すると排ガス温度が低下し、排ガス
中に硫黄酸化物が存在する場合には、これが尿素の分解
により生じたＮＨ3 と反応して酸性硫安が析出し、後流
機器に悪影響を与えるという問題があった。さらにドレ
インが煙道に溜まったり、後流側に設置する脱硝触媒層
まで水分が飛散し、触媒性能への悪影響が無視できない
という問題があった。As one of the methods of using a solid reducing agent,
A method is known in which an aqueous solution of a reducing agent is directly sprayed into exhaust gas to evaporate (JP-A-53-62772, JP-A-53-64102, JP-A-53-11227).
No. 3, JP-A No. 53-115658, etc.). However, in this method, since no consideration is given to the point of complete evaporation of the aqueous solution, for example, in the case of urea aqueous solution, when the aqueous solution is introduced into the flue, the exhaust gas temperature decreases, and when sulfur oxides are present in the exhaust gas. However, there is a problem that this reacts with NH 3 generated by decomposition of urea to precipitate acidic ammonium sulfate, which adversely affects the downstream equipment. Further, there is a problem that the drain is accumulated in the flue or the water is scattered to the denitration catalyst layer installed on the downstream side, and the adverse effect on the catalyst performance cannot be ignored.
【０００５】また固体還元剤を直接排ガスダクト内に噴
霧して気化させる方法が知られている。この方法では、
尿素などの固体還元剤を固体状態で供給するため、排ガ
スとの接触混合が悪く、また固体還元剤の完全気化が困
難であり、気化しない尿素が煙道内に残留するという問
題点があった。従って上記の方法では、還元剤の水溶液
の液滴や粉体を完全に気化または蒸発させるために加熱
手段を併設する必要があり、また排ガス温度が一定の温
度に達するまで還元剤の注入をすることができなかっ
た。There is also known a method in which a solid reducing agent is directly sprayed into an exhaust gas duct to be vaporized. in this way,
Since a solid reducing agent such as urea is supplied in a solid state, contact mixing with exhaust gas is poor, and it is difficult to completely vaporize the solid reducing agent, and there is a problem that unvaporized urea remains in the flue. Therefore, in the above method, it is necessary to additionally provide a heating means in order to completely vaporize or evaporate the droplets or powder of the reducing agent aqueous solution, and the reducing agent is injected until the exhaust gas temperature reaches a certain temperature. I couldn't.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、前記
従来技術の問題を解決し、液体アンモニアより取扱いが
容易な固体還元剤を使用して小スペースで充分な脱硝性
能を得ることができる脱硝装置を提供することにある。The object of the present invention is to solve the above-mentioned problems of the prior art and to obtain a sufficient denitration performance in a small space by using a solid reducing agent which is easier to handle than liquid ammonia. It is to provide a denitration device.
【０００７】[0007]
【課題を解決するための手段】本発明は、窒素酸化物を
含む排ガスの煙道に還元剤を注入する還元剤注入装置
と、その後流に排ガス中の窒素酸化物を除去する脱硝触
媒層とを備えた脱硝装置において、上記還元剤注入装置
が、第１成分のアンモニア鉱酸塩と第２成分のアルカリ
金属および／またアルカリ土類金属の水酸化物または炭
酸塩とを反応させてアンモニアガスを発生する反応槽
と、発生したアンモニアガスを排ガス煙道に搬送する搬
送手段と、該アンモニアガスを排ガス煙道に放出する放
出ノズルとを備えたことを特徴とする。The present invention is directed to a reducing agent injecting device for injecting a reducing agent into a flue of an exhaust gas containing nitrogen oxides, and a denitration catalyst layer for removing nitrogen oxides in the exhaust gas in the subsequent stream. In the denitration apparatus equipped with, the reducing agent injecting apparatus reacts the ammonia mineral salt of the first component with the alkali metal and / or hydroxide or carbonate of the alkaline earth metal of the second component to react with ammonia gas. It is characterized in that it is provided with a reaction tank for generating, a transportation means for transporting the generated ammonia gas to the exhaust gas flue, and a discharge nozzle for discharging the ammonia gas to the exhaust gas flue.
【０００８】本発明において、第１成分としては、塩化
アンモニウム（ＮＨ4 Ｃｌ）、硫酸アンモニウム（（Ｎ
Ｈ3)2 ＳＯ4)、酸性硫酸アンモニウム（ＮＨ4 ＨＳＯ4)
などのアンモニアの鉱酸塩が用いられる。また第２成分
としては、水酸化ナトリウム（ＮａＯＨ）、炭酸ナトリ
ウム（Ｎａ2 ＣＯ3)、炭酸水素ナトリウム（ＮａＨＣＯ
3)、炭酸水素ナトリウム（ＮａＨＣＯ3)、水酸化カルシ
ウム（Ｃａ（ＯＨ)2）、炭酸カルシウム（ＣａＣＯ3)な
どのアルカリ金属および／またはアルカリ土類金属の水
酸化物または炭酸塩が用いられる。In the present invention, ammonium chloride (NH 4 Cl), ammonium sulfate ((N
H 3) 2 SO 4), acidic ammonium sulfate (NH 4 HSO 4)
Ammonia mineral acid salts such as are used. As the second component, sodium hydroxide (NaOH), sodium carbonate (Na 2 CO 3 ), sodium hydrogen carbonate (NaHCO 3
3 ), alkali metal and / or alkaline earth metal hydroxides or carbonates such as sodium hydrogencarbonate (NaHCO 3 ), calcium hydroxide (Ca (OH) 2 ) and calcium carbonate (CaCO 3 ).
【０００９】第１成分と第２成分は、反応槽において例
えば下記に示す反応を行ってＮＨ3 ガスを発生する。 ＮＨ4 Ｃｌ ＋ ＮａＯＨ → ＮＨ3 ＋ＮａＣｌ＋Ｈ2 Ｏ （ＮＨ4)2 ＳＯ4 ＋ Ｃａ（ＯＨ)2→ ２ＮＨ3 ＋ＣａＳＯ4 ＋２Ｈ2 Ｏ ２ＮＨ4 Ｃｌ ＋ Ｎａ2 ＣＯ3 → ２ＮＨ3 ＋２ＮａＣｌ＋ＣＯ2 （ＮＨ4)2 ＳＯ4 ＋ ２ＮａＯＨ → ２ＮＨ3 ＋Ｎａ2 ＳＯ4 ＋２Ｈ2 Ｏ 発生したアンモニアの大半はガスとして放出され、一
部は反応槽内の液相に溶存する。液相中に溶存するアン
モニアは、液相中に吹き込まれる窒素、空気などの搬送
ガスで抜気されてアンモニアガスとされる。これらのア
ンモニアガスは搬送ガスとともに煙道中に搬送され、煙
道に設置された、２００〜６００℃に保持された酸化チ
タン系触媒などが充填された公知の脱硝触媒層に導かれ
て排ガス中のＮＯｘを還元する。以下、本発明を図面に
より詳しく説明する。The first component and the second component generate the NH 3 gas by performing the following reactions in the reaction tank, for example. NH 4 Cl + NaOH → NH 3 + NaCl + H 2 O (NH 4 ) 2 SO 4 + Ca (OH) 2 → 2NH 3 + CaSO 4 + 2H 2 O 2 NH 4 Cl + Na 2 CO 3 → 2NH 3 + 2NaCl + CO 2 (NH 4 ) 2 SO 4 + 2NaOH → 2NH 3 + Na 2 SO 4 + 2H 2 O Most of the generated ammonia is released as a gas, and part of it is dissolved in the liquid phase in the reaction tank. Ammonia dissolved in the liquid phase is degassed by a carrier gas such as nitrogen or air blown into the liquid phase to form ammonia gas. These ammonia gases are conveyed into the flue together with the carrier gas, and are introduced into a known denitration catalyst layer filled with a titanium oxide-based catalyst maintained at 200 to 600 ° C., which is installed in the flue and introduced into the flue gas. Reduces NOx. Hereinafter, the present invention will be described in detail with reference to the drawings.
【００１０】[0010]
【実施例】図１は、本発明の一実施例を示す脱硝装置の
説明図である。この装置は、第１成分が溶解された第１
成分溶解槽１と、第２成分が溶解された第２成分溶解槽
２と、該第１成分と第２成分を反応させてアンモニアガ
スを発生させる反応槽５と、反応液を攪拌する攪拌機１
０と、反応液中の溶解アンモニアを抜気するとともに発
生したアンモニアガスを排ガス煙道１１に搬送する搬送
ガスを反応槽５に注入する搬送ガス注入管９と、アンモ
ニアガスを搬送ガスとともに排ガス煙道１１に放出する
放出ノズル７と、該放出ノズル７の後流に設置された触
媒層８とから主としてなる。なお１２は排ガス発生装
置、１３は煙突、１４は廃液抜出口である。EXAMPLE FIG. 1 is an explanatory view of a denitration apparatus showing an example of the present invention. This device has a first component in which the first component is dissolved.
Component dissolving tank 1, second component dissolving tank 2 in which the second component is dissolved, reaction tank 5 for reacting the first component and the second component to generate ammonia gas, and a stirrer 1 for stirring the reaction liquid
0, a carrier gas injection pipe 9 for degassing the dissolved ammonia in the reaction liquid and for injecting a carrier gas that carries the generated ammonia gas to the exhaust gas flue 11 into the reaction tank 5, and an ammonia gas together with the carrier gas for exhaust gas smoke. It mainly consists of a discharge nozzle 7 which discharges to the passage 11, and a catalyst layer 8 which is installed downstream of the discharge nozzle 7. Reference numeral 12 is an exhaust gas generator, 13 is a chimney, and 14 is a waste liquid outlet.
【００１１】このような構成において、第１成分および
第２成分は、それぞれの溶解槽１、２で諸定量の水に溶
解または懸濁され、液体ポンプ３、４により反応槽５に
送られる。これらの反応液は攪拌機１０で攪拌されて反
応し、アンモニアガスを発生する。液相中の溶解アンモ
ニアは、搬送ガス注入管９の先端の注入口から微細な気
泡として反応液中に吹き込まれる搬送ガス（窒素ガスま
たは空気）によって抜気されてアンモニアガスとされ
る。発生したアンモニアガスは、搬送ガスとともに配管
６を経て放出ノズル７から煙道１１に放出され、煙道中
の排ガスと均一に混合して後流の触媒層８に導かれて触
媒と接触し、排ガス中のＮＯｘを還元する。ＮＯｘが除
去された排ガスは煙道の先端に設けられた煙突１３から
系外に排出される。In such a structure, the first component and the second component are dissolved or suspended in various amounts of water in the respective dissolution tanks 1 and 2 and sent to the reaction tank 5 by the liquid pumps 3 and 4. These reaction liquids are stirred by the stirrer 10 and react with each other to generate ammonia gas. The dissolved ammonia in the liquid phase is degassed by the carrier gas (nitrogen gas or air) blown into the reaction liquid as fine bubbles from the inlet at the tip of the carrier gas inlet pipe 9 to form ammonia gas. The generated ammonia gas is discharged from the discharge nozzle 7 to the flue 11 through the pipe 6 together with the carrier gas, is uniformly mixed with the exhaust gas in the flue, is guided to the downstream catalyst layer 8 and contacts the catalyst, Reduces NOx inside. The exhaust gas from which NOx has been removed is discharged out of the system from the chimney 13 provided at the tip of the flue.
【００１２】第１成分および第２成分はそれぞれ水溶液
またはスラリ状で液体ポンプにより反応槽に送られる
が、その注入量は、排ガス中のＮＯｘを還元するのに必
要なアンモニアガスが発生するようにコントロールされ
る。コントロールは第１成分と第２成分の両者をする必
要はなく、どちらか一方はバッチ式で投入してもよい。
またどちらか一方が粉体状で投入されてもよい。アンモ
ニア発生後の反応液は、そのまま、または濾過により固
形物を除去した後、廃液抜出口１４から廃棄される。The first component and the second component are respectively sent to the reaction tank in the form of an aqueous solution or a slurry by a liquid pump, and their injection amounts are such that ammonia gas necessary for reducing NOx in the exhaust gas is generated. Controlled. The control does not need to use both the first component and the second component, and either one may be added in a batch system.
Further, either one may be charged in powder form. The reaction liquid after the generation of ammonia is discarded as it is or after the solid matter is removed by filtration, and is discarded from the waste liquid outlet 14.
【００１３】第１成分と第２成分の組合わせは、どのよ
うなものであってもいいが、生成物が塩化ナトリウムで
ある点で、塩化アンモニウムと炭酸ナトリウムまたは水
酸化ナトリウムの組合わせが、また石膏として回収が容
易である点で硫酸アンモニウムと水酸化カルシウムとの
組合わせが好ましい。反応槽５はアンモニアの発生を容
易にするため加熱することもできる。The combination of the first component and the second component may be any, but in that the product is sodium chloride, the combination of ammonium chloride and sodium carbonate or sodium hydroxide is Further, a combination of ammonium sulfate and calcium hydroxide is preferable in that it can be easily recovered as gypsum. The reaction tank 5 can also be heated to facilitate the generation of ammonia.
【００１４】図２は、本発明の他の実施例を示す脱硝装
置の説明図である。この装置では、炭酸カルシウム、水
酸化カルシウムなどの難溶性化合物（第２成分成形体）
１５を充填した反応器５Ａに、硫酸アンモニウム水溶液
（第１成分）を注入してアンモニアを発生させるととも
に、この反応により生成する石膏を固形物の形で回収す
る。この反応器をカートリジ状に構成して小容量脱硝装
置の還元剤注入装置として用いることが可能である。FIG. 2 is an explanatory view of a denitration device showing another embodiment of the present invention. With this equipment, sparingly soluble compounds such as calcium carbonate and calcium hydroxide (second component molded body)
An ammonium sulfate aqueous solution (first component) is injected into the reactor 5A filled with 15 to generate ammonia, and gypsum produced by this reaction is recovered in the form of a solid. It is possible to configure this reactor into a cartridge type and use it as a reducing agent injection device of a small capacity denitration device.
【００１５】このように本発明においては、水溶液状還
元剤や固体状還元剤を直接排煙中に吹込まないため、従
来のように排ガス温度の低下、排ガスとの混合低下、還
元剤の煙道壁への析出などの問題を生じることがなく、
加熱手段を設置することなく起動時直後からアンモニア
ガスを注入することができ、また液滴や粉体の慣性が大
きいために起こる排ガスとの混合の不均一さが生じな
い。また定量性に富んだ第１成分および第２成分を定量
ポンプを用いて高精度に測定することにより、アンモニ
アガスの発生量を高精度に制御することが可能である。As described above, in the present invention, since the aqueous reducing agent and the solid reducing agent are not directly blown into the flue gas, the exhaust gas temperature lowers, the mixing with the exhaust gas lowers, and the reducing agent smoke does not exist as in the conventional case. Without causing problems such as deposition on the road wall,
Ammonia gas can be injected immediately after the start-up without installing a heating means, and non-uniformity of mixing with the exhaust gas caused by the large inertia of droplets or powder does not occur. Further, the amount of ammonia gas generated can be controlled with high precision by measuring the first component and the second component, which are highly quantitative, with high precision using a quantitative pump.
【００１６】さらに還元剤として安定な塩類を用いるこ
とができ、アンモニア水のように蒸散して臭気を発する
恐れがなく、また尿素を用いる場合のように保管時に潮
解して粉体として吹込みが困難になったり、排ガスとの
混合が悪化して脱硝率の低下につながるような問題もな
い。さらに触媒として、事業用ボイラの排煙脱硝などに
多くの実績のある酸化チタン系脱硝用触媒などを用いて
信頼性の高い脱硝装置を構成することが可能である。Further, stable salts can be used as a reducing agent, and there is no fear of evaporating odor like ammonia water. Moreover, as in the case of using urea, it does not deliquesce during storage and is blown as powder. There is no problem that it becomes difficult or the mixing with exhaust gas deteriorates and the NOx removal rate decreases. Further, as a catalyst, it is possible to construct a highly reliable denitration device by using a titanium oxide-based denitration catalyst, etc., which has a lot of experience in flue gas denitration of commercial boilers.
【００１７】[0017]
【発明の効果】本発明の脱硝装置によれば、固体還元剤
を煙道に注入する前段で完全にＮＨ3 に分解することが
できるため、従来の液化ＮＨ3 利用脱硝法と同等に取扱
うことができ、液滴や粉体で注入する場合に問題となる
気化、蒸発のための熱源を必要とせず、脱硝装置の起動
直後から還元剤の注入を可能にできる。またガス状態で
吹込むため、粉体や液滴で吹込む場合に発生する還元剤
の偏流を大幅に改善し、均一な排ガスとの混合が可能で
あり、脱硝性能が向上する。さらに液化ＮＨ3 貯蔵用高
圧容器を設ける必要がないので、脱硝装置の小型化が図
れ、かつ安全性が向上する。本発明の脱硝装置は、ディ
ーゼルエンジンやガスタービンなどの都市近郊で用いら
れる、起動停止の多い発電装置用として特に有用であ
る。EFFECTS OF THE INVENTION According to the denitration apparatus of the present invention, the solid reducing agent can be completely decomposed into NH 3 before it is injected into the flue. Therefore, it should be handled in the same manner as the conventional liquefied NH 3 denitration method. Therefore, it is possible to inject the reducing agent immediately after the denitration device is activated, without requiring a heat source for vaporization and evaporation, which is a problem when injecting with droplets or powder. Further, since the gas is blown in, the uneven flow of the reducing agent that occurs when blowing in powder or liquid droplets is greatly improved, uniform mixing with the exhaust gas is possible, and denitration performance is improved. Furthermore, since it is not necessary to provide a high-pressure container for storing liquefied NH 3 , the denitration device can be downsized and the safety can be improved. INDUSTRIAL APPLICABILITY The denitration device of the present invention is particularly useful for power generators used in the suburbs of cities such as diesel engines and gas turbines, which often start and stop.
【図１】図１は、本発明の一実施例を示す脱硝装置の説
明図である。FIG. 1 is an explanatory diagram of a denitration device showing an embodiment of the present invention.
【図２】図２は、本発明の他の実施例を示す脱硝装置の
説明図である。FIG. 2 is an explanatory diagram of a denitration device showing another embodiment of the present invention.
１…第１成分溶解槽、２…第２成分溶解槽、３、４…液
体ポンプ、５…反応槽、６…配管、７…放出ノズル、８
…触媒層、９…搬送ガス注入管、１０…攪拌機、１１…
煙道、１２…排ガス発生装置、１３…煙突、１４…廃液
抜出口、１５…第２成分成形体。DESCRIPTION OF SYMBOLS 1 ... 1st component dissolving tank, 2 ... 2nd component dissolving tank, 3 and 4 ... liquid pump, 5 ... reaction tank, 6 ... piping, 7 ... discharge nozzle, 8
… Catalyst layer, 9… Carrier gas injection pipe, 10… Stirrer, 11…
Flue, 12 ... Exhaust gas generator, 13 ... Chimney, 14 ... Waste liquid outlet, 15 ... Second component molded body.
Claims (1)
を注入する還元剤注入装置と、その後流に排ガス中の窒
素酸化物を除去する脱硝触媒層とを備えた脱硝装置にお
いて、上記還元剤注入装置が、第１成分のアンモニア鉱
酸塩と第２成分のアルカリ金属および／またアルカリ土
類金属の水酸化物または炭酸塩とを反応させてアンモニ
アガスを発生する反応槽と、発生したアンモニアガスを
排ガス煙道に搬送する搬送手段と、該アンモニアガスを
排ガス煙道に放出する放出ノズルとを備えたことを特徴
とする脱硝装置。Claim: What is claimed is: 1. A reducing agent injecting device for injecting a reducing agent into a flue of an exhaust gas containing nitrogen oxides, and a denitration catalyst layer for removing nitrogen oxides in the exhaust gas in a downstream thereof. In the denitration apparatus, the reducing agent injection apparatus generates ammonia gas by reacting the first component ammonia mineral acid salt with the second component alkali metal and / or alkaline earth metal hydroxide or carbonate. A denitration apparatus comprising: a reaction tank that performs the above, a transporting unit that transports the generated ammonia gas to the exhaust gas flue, and a discharge nozzle that discharges the ammonia gas to the exhaust gas flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17814791A JP3276158B2 (en) | 1991-07-18 | 1991-07-18 | Denitration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17814791A JP3276158B2 (en) | 1991-07-18 | 1991-07-18 | Denitration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0523543A true JPH0523543A (en) | 1993-02-02 |
| JP3276158B2 JP3276158B2 (en) | 2002-04-22 |
Family
ID=16043462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17814791A Expired - Fee Related JP3276158B2 (en) | 1991-07-18 | 1991-07-18 | Denitration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3276158B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07260130A (en) * | 1994-03-22 | 1995-10-13 | M I C Kk | Apparatus for separating air pollution substances from exhaust gas |
| CN102658022A (en) * | 2012-05-29 | 2012-09-12 | 福建龙净环保股份有限公司 | SNCR (Selective non-catalytic reaction) denitration system |
| CN109395581A (en) * | 2018-12-17 | 2019-03-01 | 青岛双瑞海洋环境工程股份有限公司 | Marine exhaust denitrating system |
| CN113819477A (en) * | 2021-10-12 | 2021-12-21 | 贵州大学 | Wide-load denitration and combustion stabilization system for auxiliary thermal power and electric coal-fired unit |
| CN115463531A (en) * | 2022-10-12 | 2022-12-13 | 济南国能环境工程有限公司 | Ultralow-emission purification treatment system and method for sulfur and nitrate dust in flue gas at tail of biomass boiler |
-
1991
- 1991-07-18 JP JP17814791A patent/JP3276158B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07260130A (en) * | 1994-03-22 | 1995-10-13 | M I C Kk | Apparatus for separating air pollution substances from exhaust gas |
| CN102658022A (en) * | 2012-05-29 | 2012-09-12 | 福建龙净环保股份有限公司 | SNCR (Selective non-catalytic reaction) denitration system |
| CN109395581A (en) * | 2018-12-17 | 2019-03-01 | 青岛双瑞海洋环境工程股份有限公司 | Marine exhaust denitrating system |
| CN109395581B (en) * | 2018-12-17 | 2024-03-22 | 青岛双瑞海洋环境工程股份有限公司 | Ship exhaust gas denitration system |
| CN113819477A (en) * | 2021-10-12 | 2021-12-21 | 贵州大学 | Wide-load denitration and combustion stabilization system for auxiliary thermal power and electric coal-fired unit |
| CN113819477B (en) * | 2021-10-12 | 2023-08-29 | 贵州大学 | Wide-load denitration stable combustion system for auxiliary thermal power coal-fired unit |
| CN115463531A (en) * | 2022-10-12 | 2022-12-13 | 济南国能环境工程有限公司 | Ultralow-emission purification treatment system and method for sulfur and nitrate dust in flue gas at tail of biomass boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3276158B2 (en) | 2002-04-22 |
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