JPH08155264A - Exhaust gas desulfurization denitration method and device - Google Patents
Exhaust gas desulfurization denitration method and deviceInfo
- Publication number
- JPH08155264A JPH08155264A JP6299428A JP29942894A JPH08155264A JP H08155264 A JPH08155264 A JP H08155264A JP 6299428 A JP6299428 A JP 6299428A JP 29942894 A JP29942894 A JP 29942894A JP H08155264 A JPH08155264 A JP H08155264A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- corona discharge
- pulse corona
- gas
- pulse
- Prior art date
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
(57)【要約】
【目的】 排ガス中のＮＯｘ及びＳＯｘをパルスコルナ
放電で分解又は酸化したのち、酸化物を中和しマグネシ
ウム塩として系外へ放出可能とする。
【構成】 排ガス中の窒素酸化物及び硫黄酸化物を、パ
ルスコロナ放電装置２でパルスコロナ放電により処理す
る工程を有する排ガスの脱硫脱硝方法であって、パルス
コロナ放電により処理する工程で分解又は酸化された酸
化物を、ガス・液接触装置６でアルカリ液用タンク８よ
り供給された水酸化マグネシウム溶液に接触させて中和
する工程と、マグネシウム塩に生成して放出管９より系
外へ放出する工程とよりなる。
【効果】 ＳＯｘ濃度やＮＯｘ濃度を規定値以下に下げ
て系外へ放出が可能となり、環境への影響を抑制でき
る。
(57) [Abstract] [Objective] After decomposing or oxidizing NOx and SOx in exhaust gas by pulse corner discharge, the oxide is neutralized and released as magnesium salt outside the system. A method for desulfurization and denitration of exhaust gas, which comprises a step of treating nitrogen oxides and sulfur oxides in exhaust gas by pulse corona discharge in a pulse corona discharge device 2, wherein decomposition or oxidation is performed in the step of treating by pulse corona discharge. The step of contacting the formed oxide with the magnesium hydroxide solution supplied from the tank 8 for the alkaline solution by the gas / liquid contacting device 6 to neutralize it, and producing magnesium salt to release it from the release pipe 9 to the outside of the system. And the process of doing. [Effect] The SOx concentration and the NOx concentration can be reduced to below a specified value and released outside the system, and the influence on the environment can be suppressed.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ごみ焼却場、工場及び
発電所等の燃焼炉又はディーゼルエンジン等の排ガス中
に含まれる窒素酸化物及び硫黄酸化物の処理に係り、特
に比較的小規模な船舶のボイラーやディーゼルエンジン
等の排ガスを処理するのに好適な排ガスの脱硫脱硝方法
及び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the treatment of nitrogen oxides and sulfur oxides contained in exhaust gas from combustion furnaces such as refuse incinerators, factories and power plants, or diesel engines. TECHNICAL FIELD The present invention relates to an exhaust gas desulfurization and denitration method and apparatus suitable for treating exhaust gas from a boiler of a ship or a diesel engine.
【０００２】[0002]
【従来の技術】従来のグロー放電プラズマを利用した排
ガス処理装置としては、特開平１−２３６９２４号公
報、特開平２−２０３９２０号公報、特開平２−２２７
１１７号公報及び特開平２−２４１５１９号公報等でそ
れぞれ図３〜図６に示す装置が提案されている。これら
により、排ガス中の窒素酸化物、硫黄酸化物（以下ＮＯ
ｘ，ＳＯｘと稱す）を処理する場合を例に説明する。2. Description of the Related Art Exhaust gas treatment apparatuses using conventional glow discharge plasma are disclosed in JP-A-1-236924, JP-A-2-203920, and JP-A-2-227.
The devices shown in FIGS. 3 to 6 are proposed in Japanese Laid-Open Patent Publication No. 117 and Japanese Patent Laid-Open No. 2-241519. As a result, nitrogen oxides and sulfur oxides (hereinafter NO
x, SOx) will be described as an example.
【０００３】図３において、燃焼炉１０１から排出され
た排ガスは除塵器１０３で煤塵が取り除かれ、アンモニ
ア供給管１０５からアンモニアを数リットル／分〜数十
リットル／分の範囲で供給され、プラズマ反応器１０８
へ導入される。このプラズマ反応器１０８の構造は、例
えば図４に示すような排ガス導入管に穴を多数設けた構
造、図５に示すような排ガス流路に誘電体で覆った網目
状の電極を直角に配置した構造、図６に示すような誘電
体で表面を覆った鋸の刃状電極構造等により放電の安定
性の向上とガス処理量の増大を計っている。プラズマ中
の反応は、複雑であるが、ほぼ以下のように理解されて
いる。In FIG. 3, the exhaust gas discharged from the combustion furnace 101 is dedusted by a dust remover 103, and ammonia is supplied from an ammonia supply pipe 105 at a rate of several liters / minute to several tens of liters / minute, and a plasma reaction is performed. Bowl 108
Be introduced to. The structure of this plasma reactor 108 is, for example, a structure in which a large number of holes are provided in an exhaust gas introduction pipe as shown in FIG. 4, and a mesh-shaped electrode covered with a dielectric is arranged at a right angle in an exhaust gas passage as shown in FIG. The structure described above, the structure of a saw blade electrode whose surface is covered with a dielectric as shown in FIG. 6, and the like are used to improve the stability of discharge and the amount of gas treatment. The reaction in plasma is complicated, but it is understood as follows.
【０００４】すなわち、化学反応を促進するバッファガ
スとしてのアンモニアの存在と反応容器において第１と
第２の電極間に電圧を印加して発生させたグロー放電プ
ラズマにより、次の反応が生じ、ＮＯｘ、ＳＯｘが無害
化処理される。 ＮＨ3→ＮＨ2＋Ｈ ……………………………………………………（１） ２ＮＯ2→２ＮＯ＋Ｏ2 ………………………………………………（２） ２ＮＯ＋Ｏ2→Ｎ2＋２Ｏ2……………………………………………（３） ＮＨ2＋ＮＯ→Ｎ2＋Ｈ2Ｏ……………………………………………（４） ２ＮＨ2＋ＳＯ2→Ｓ＋Ｎ2＋２Ｈ2Ｏ ………………………………（５） 化学反応を促進させるバッファガスとしてのアンモニア
の存在と、これら電極の工夫により、１Ｎｍ3/min以上
の排ガス量でもＮＯｘで８０％以上、ＳＯｘで９０％以
上の除去率を得ており、ボイラ、ディーゼルエンジン、
ガスタービン等各種燃焼を伴う装置の排ガス公害対策装
置として活用されつつある。That is, the presence of ammonia as a buffer gas for promoting the chemical reaction and the glow discharge plasma generated by applying a voltage between the first and second electrodes in the reaction vessel cause the following reaction, NOx. , SOx are detoxified. NH 3 → NH 2 + H …………………………………………………… (1) 2NO 2 → 2NO + O 2 ………………………………………… …… (2) 2NO + O 2 → N 2 + 2O 2 ……………………………………………… (3) NH 2 + NO → N 2 + H 2 O ………………………… …………………… (4) 2NH 2 + SO 2 → S + N 2 + 2H 2 O ………………………… (5) Presence of ammonia as a buffer gas that promotes chemical reactions, By devising these electrodes, the removal rate of 80% or more for NOx and 90% or more for SOx has been obtained even with an exhaust gas amount of 1 Nm 3 / min or more.
It is being used as an exhaust gas pollution control device for devices involving various combustion such as gas turbines.
【０００５】また「パルスコロナ・プラズマ化学方式
（ＰＰＣＰ）による火力発電用ボイラー排ガスの新しい
乾式脱硫・脱硝技術調査報告書」日機連，２ＥＰ−１
８，（社）日本機械工業連合に、電子線照射法とＰＰＣ
Ｐ法とが記載されている。電子線照射法は、電子線の発
生や二次Ｘ線対策のために装置が大型化しているが、Ｎ
Ｈ3の添加により化学反応を改善し、かつ酸化物を（Ｎ
Ｈ4）2ＳＯ4，ＮＨ4ＮＯ3として回収している。ＰＰＣ
Ｐ法は、装置が単純で比較的安全であり、ＮＨ3を添加
する以外に酸化反応だけでＨ2ＳＯ4，ＨＮＯ3の酸回収
も考えられている。しかし前記いずれの方式も大量のア
ンモニアの保管を要する欠点がある。Further, "A new dry desulfurization / denitration technology research report of exhaust gas from a boiler for thermal power generation by a pulse corona plasma chemical method (PPCP)", Nikkiren, 2EP-1
8. Electron beam irradiation method and PPC for Japan Machinery Union
P method is described. In the electron beam irradiation method, the size of the device is increased to prevent the generation of electron beams and secondary X-rays.
The addition of H 3 improves the chemical reaction and improves the oxide (N
It is recovered as H 4 ) 2 SO 4 and NH 4 NO 3 . PPC
The P method has a simple apparatus and is relatively safe, and it is considered that the acid recovery of H 2 SO 4 and HNO 3 can be performed only by the oxidation reaction in addition to the addition of NH 3 . However, each of the above methods has a drawback that a large amount of ammonia needs to be stored.
【０００６】[0006]
【発明が解決しようとする課題】従来の排ガスの脱硫脱
硝方法にあっては、パルスコルナ放電法のような簡単な
方法で排ガス中のＳＯｘ及びＮＯｘの分解あるいは酸化
した後では、環境に対して無害とする設備を必要とする
問題がある。またＮＨ3は、その取扱に有資格者が必要
であり、かつアンモニウム塩は放流できないためその処
分方法が問題である。In the conventional method for desulfurization and denitration of exhaust gas, the SOx and NOx in the exhaust gas are decomposed or oxidized by a simple method such as the pulse corner discharge method, and are harmless to the environment. There is a problem that requires equipment. Further, NH 3 requires a qualified person to handle it, and the ammonium salt cannot be discharged, so its disposal method is a problem.
【０００７】本発明の目的は、排ガス中のＮＯｘ及びＳ
Ｏｘをパルスコルナ放電で分解又は酸化したのち、酸化
物を中和しマグネシウム塩として系外へ放出することの
できる排ガスの脱硫脱硝方法及び装置を提供することに
ある。The object of the present invention is to reduce NOx and S in exhaust gas.
An object of the present invention is to provide a desulfurization and denitration method and device for exhaust gas capable of decomposing or oxidizing Ox by pulse corner discharge and then neutralizing the oxide and releasing it as magnesium salt out of the system.
【０００８】[0008]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る排ガスの脱硫脱硝方法は、排ガス中の
窒素酸化物及び硫黄酸化物を、パルスコロナ放電により
処理する排ガスの脱硫脱硝方法において、パルスコロナ
放電により分解又は酸化された酸化物を、水酸化マグネ
シウム溶液に接触させて中和し、生成されたマグネシウ
ム塩を系外へ放出する構成とする。In order to achieve the above object, an exhaust gas desulfurization and denitration method according to the present invention is an exhaust gas desulfurization and denitration process for treating nitrogen oxides and sulfur oxides in exhaust gas by pulse corona discharge. In the method, the oxide decomposed or oxidized by pulse corona discharge is brought into contact with a magnesium hydroxide solution to be neutralized, and the produced magnesium salt is released to the outside of the system.
【０００９】そして排ガスの脱硫脱硝装置においては、
排ガス中の窒素酸化物及び硫黄酸化物を、パルスコロナ
放電により処理するパルスコロナ放電装置を備えた排ガ
スの脱硫脱硝装置において、パルスコロナ放電装置の後
流に、パルスコロナ放電装置により分解又は酸化された
酸化物を水酸化マグネシウム溶液に接触させて中和しマ
グネシウム塩を生成するガス・液接触装置と、ガス・液
接触装置に前記水酸化マグネシウム溶液を供給するアル
カリ液供給手段とを具備した構成とする。In the exhaust gas desulfurization and denitration device,
Nitrogen oxides and sulfur oxides in exhaust gas are treated by pulse corona discharge in an exhaust gas desulfurization and denitration device equipped with a pulse corona discharge device, which is decomposed or oxidized by the pulse corona discharge device downstream of the pulse corona discharge device. And a gas / liquid contactor for contacting the oxide with a magnesium hydroxide solution to neutralize the oxide to produce a magnesium salt, and an alkaline liquid supply means for supplying the magnesium hydroxide solution to the gas / liquid contactor. And
【００１０】[0010]
【作用】本発明によれば、パルスコロナ放電装置の後流
にガス・液接触装置を設けたため、パルスコロナ放電に
より分解又は酸化した排ガス中のＮＯｘ，ＳＯｘの活性
な酸化物に、アルカリ液供給手段より供給した水酸化マ
グネシウム溶液を接触させて中和することにより、下記
（６）〜（１０）式に示すように環境に無害なマグネシ
ウム塩が生成される。 ＳＯ2＋２ＯＨ→Ｈ2ＳＯ4 ……………（６） Ｍｇ（ＯＨ）2＋Ｈ2ＳＯ4→ＭｇＳＯ4＋２Ｈ2Ｏ ……………（７） ＮＯ2＋ＯＨ→ＨＮＯ3 ……………（８） ＮＯ3＋ＨＯ2→ＨＮＯ3＋Ｏ2 ……………（９） Ｍｇ（ＯＨ）2＋２ＨＮＯ3→Ｍｇ（ＮＯ3）2＋２Ｈ2Ｏ ……………（１０） マグネシウムイオンは海水中に多く含有されており、マ
グネシウム塩の海中放流は可能である。According to the present invention, since the gas / liquid contact device is provided downstream of the pulse corona discharge device, the alkaline liquid is supplied to the active oxides of NOx and SOx in the exhaust gas decomposed or oxidized by the pulse corona discharge. By contacting and neutralizing the magnesium hydroxide solution supplied from the means, a magnesium salt harmless to the environment is generated as shown in the following formulas (6) to (10). SO 2 + 2OH → H 2 SO 4 ………… (6) Mg (OH) 2 + H 2 SO 4 → MgSO 4 + 2H 2 O ………… (7) NO 2 + OH → HNO 3 …………… (8) NO 3 + HO 2 → HNO 3 + O 2 …………… (9) Mg (OH) 2 + 2HNO 3 → Mg (NO 3 ) 2 + 2H 2 O ……… (10) Magnesium ion is seawater It is contained in a large amount, and magnesium salts can be released into the sea.
【００１１】[0011]
【実施例】本発明の一実施例を図１を参照しながら説明
する。図１は本発明の排ガスの脱硫脱硝装置を示す図で
ある。図１に示すように、排ガス中の窒素酸化物及び硫
黄酸化物を、パルスコロナ放電装置２でパルスコロナ放
電により処理する工程を有する排ガスの脱硫脱硝方法で
あって、パルスコロナ放電により処理する工程で分解又
は酸化された酸化物を、ガス・液接触装置６でアルカリ
液用タンク(アルカリ液供給手段)８より供給された水酸
化マグネシウム溶液に接触させて中和する工程と、生成
されたマグネシウム塩を放出管９より系外へ放出する工
程とよりなる構成とする。図２は、パルスコロナ放電装
置２の列とガス・液接触装置６の列とを交換したもので
あり、放電後の中和反応をできるだけすばやく行えるよ
うに、予め、アルカリ液を排ガスに接触させてから放電
処理を行う構成図である。反応上は図１，図２の構成と
も全く同一と考えてよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram showing an exhaust gas desulfurization and denitration apparatus of the present invention. As shown in FIG. 1, a method for desulfurization and denitration of exhaust gas, which comprises a step of treating nitrogen oxides and sulfur oxides in exhaust gas by pulse corona discharge in a pulse corona discharge device 2, the step of treating by pulse corona discharge And a step of neutralizing the oxide decomposed or oxidized by the gas / liquid contact device 6 with the magnesium hydroxide solution supplied from the alkaline liquid tank (alkali liquid supply means) 8 and the generated magnesium. The salt is discharged from the discharge pipe 9 to the outside of the system. Fig. 2 shows the pulse corona discharge device 2 and the gas / liquid contact device 6 which are exchanged with each other. The alkaline liquid is contacted with the exhaust gas in advance so that the neutralization reaction after the discharge can be performed as quickly as possible. It is a block diagram which performs a discharge process after it. In terms of reaction, it may be considered that the configurations of FIGS.
【００１２】すなわち、ごみ焼却場、工場、発電所など
の燃焼炉又はディーゼルエンジンから排出される排ガス
は、排ガス導入管１を経由してガス流通式の高電圧電極
間隙を有するパルスコロナ放電装置２へ導入される。パ
ルスコロナ放電装置２では高圧電源４より電線３を経由
して供給されたエネルギーにより高電圧パルスコロナ放
電が発生され、そこで排ガス中のＳＯｘ，ＮＯｘが分解
又は酸化処理される。放電処理された排ガスの酸化物は
連結管５を通り次段のガス・液接触装置６に導入され
る。ガス・液接触装置６にはアルカリ液用タンク８より
その供給管７を通して必要量のアルカリ液が供給され、
アルカリ液は酸化された排ガスを容易に中和し、マグネ
シウム塩を生成するため、マグネシウム塩を放出管９を
通して系外へ放流・放出できる。本実施例ではアルカリ
液として水酸化マグネシウムを使用する。That is, the exhaust gas discharged from a combustion furnace such as a refuse incinerator, a factory, a power plant, or a diesel engine is passed through the exhaust gas introducing pipe 1 and a pulse corona discharge device 2 having a gas flow type high voltage electrode gap. Be introduced to. In the pulse corona discharge device 2, high-voltage pulse corona discharge is generated by the energy supplied from the high voltage power supply 4 via the electric wire 3, and SOx and NOx in the exhaust gas are decomposed or oxidized there. The oxide of the exhaust gas subjected to the electric discharge is introduced into the gas / liquid contact device 6 in the next stage through the connecting pipe 5. The gas / liquid contactor 6 is supplied with the required amount of alkaline liquid from the alkaline liquid tank 8 through the supply pipe 7.
Since the alkaline liquid easily neutralizes the oxidized exhaust gas and produces magnesium salt, the magnesium salt can be discharged / released to the outside of the system through the discharge pipe 9. In this embodiment, magnesium hydroxide is used as the alkaline solution.
【００１３】次にガス・液接触装置の動作を説明する。
パルスコロナ放電で分解又は酸化した排ガス中のＮＯ
ｘ，ＳＯｘの活性な酸化物ＳＯ2，ＮＯ2に、水酸化マグ
ネシウム溶液Ｍｇ（ＯＨ）2を接触させて中和すること
により、前記（６）〜（１０）式に示すような環境に無
害なマグネシウム塩が生成される。マグネシウムイオン
は海水中に多く含有されており、マグネシウム塩の海中
放流は可能であり、ＮＨ3ガスとは異なり危険性もな
い。また水酸化マグネシウム溶液の取扱に有資格者を必
要としない。Next, the operation of the gas / liquid contact device will be described.
NO in exhaust gas decomposed or oxidized by pulse corona discharge
x, SOx active oxides SO 2 and NO 2 are brought into contact with a magnesium hydroxide solution Mg (OH) 2 to neutralize them, and thus harmless to the environment as shown in the formulas (6) to (10). Magnesium salt is produced. A large amount of magnesium ions are contained in seawater, and magnesium salts can be released into the sea, and unlike NH 3 gas, there is no danger. Also, no qualified person is required to handle the magnesium hydroxide solution.
【００１４】本実施例によれば、燃焼炉やエンジン等の
排ガス中のＳＯｘ，ＮＯｘを処理するパルスコロナ放電
装置の後流に、ガス・液接触装置を取付けることによっ
て、ＮＯｘやＳＯｘ濃度を規制値以下に下げて系外へ放
出可能とし、環境に全く悪い影響を与えることがない。
実際の設置については、船舶のボイラ等の比較的小規模
な排ガス処理設備を構成できる。According to the present embodiment, the NOx and SOx concentrations are regulated by installing the gas / liquid contact device in the downstream of the pulse corona discharge device for treating SOx and NOx in the exhaust gas of a combustion furnace, an engine or the like. It can be released to the outside of the system by lowering it below the value, and it will not have any adverse effect on the environment.
For actual installation, a relatively small-scale exhaust gas treatment facility such as a boiler of a ship can be configured.
【００１５】[0015]
【発明の効果】本発明によれば、排ガス中のＳＯｘ，Ｎ
Ｏｘを処理するパルスコロナ放電装置の後流に、ガス・
液接触装置を設けて水酸化マグネシウム溶液を酸化物と
接触させて中和するため、ＳＯｘ濃度やＮＯｘ濃度を規
定値以下に下げて系外へ放出が可能となり、環境への影
響を抑制することができる。According to the present invention, SOx, N in exhaust gas
In the wake of the pulse corona discharge device that processes Ox, gas
Since a magnesium hydroxide solution is brought into contact with an oxide to neutralize it by providing a liquid contact device, SOx concentration and NOx concentration can be reduced to below specified values and released outside the system, thus suppressing the impact on the environment. You can
【図１】本発明の一実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
【図２】図１の他の例を示す構成図である。FIG. 2 is a configuration diagram showing another example of FIG.
【図３】従来の技術を示す図である。FIG. 3 is a diagram showing a conventional technique.
【図４】従来の技術を示す図である。FIG. 4 is a diagram showing a conventional technique.
【図５】従来の技術を示す図である。FIG. 5 is a diagram showing a conventional technique.
【図６】従来の技術を示す図である。FIG. 6 is a diagram showing a conventional technique.
１ 排ガス導入管 ２ パルスコロナ放電装置 ３ 高圧電線 ４ 高圧電源 ５ 連結部 ６ ガス・液接触装置 ７ 連結部 ８ アルカリ液用タンク ９ 放出管 1 Exhaust gas introduction pipe 2 Pulse corona discharge device 3 High-voltage electric wire 4 High-voltage power supply 5 Connection part 6 Gas / liquid contact device 7 Connection part 8 Alkaline liquid tank 9 Release pipe
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 ＺＡＢ Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B01D 53/34 ZAB
Claims (2)
を、パルスコロナ放電により処理する排ガスの脱硫脱硝
方法において、前記パルスコロナ放電により分解又は酸
化された酸化物を、水酸化マグネシウム溶液に接触させ
て中和し、生成されたマグネシウム塩を系外へ放出する
ことを特徴とする排ガスの脱硫脱硝方法。1. In a desulfurization and denitration method for exhaust gas, which treats nitrogen oxides and sulfur oxides in the exhaust gas by pulse corona discharge, the oxide decomposed or oxidized by the pulse corona discharge is contacted with a magnesium hydroxide solution. A method for desulfurization and denitration of exhaust gas, characterized in that the produced magnesium salt is discharged to the outside of the system.
を、パルスコロナ放電により処理するパルスコロナ放電
装置を備えた排ガスの脱硫脱硝装置において、前記パル
スコロナ放電装置の後流で、該パルスコロナ放電装置に
より分解又は酸化された酸化物を水酸化マグネシウム溶
液に接触させて中和しマグネシウム塩を生成するガス・
液接触装置と、該ガス・液接触装置に前記水酸化マグネ
シウム溶液を供給するアルカリ液供給手段とを具備した
ことを特徴とする排ガスの脱硫脱硝装置。2. A desulfurization and denitration apparatus for exhaust gas, comprising a pulse corona discharge device for treating nitrogen oxides and sulfur oxides in exhaust gas by pulse corona discharge, wherein the pulse corona discharge device is provided downstream of the pulse corona discharge device. A gas that neutralizes the oxide decomposed or oxidized by the discharge device by contacting it with a magnesium hydroxide solution to produce a magnesium salt.
An exhaust gas desulfurization and denitration apparatus comprising a liquid contact device and an alkaline liquid supply means for supplying the magnesium hydroxide solution to the gas / liquid contact device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6299428A JPH08155264A (en) | 1994-12-02 | 1994-12-02 | Exhaust gas desulfurization denitration method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6299428A JPH08155264A (en) | 1994-12-02 | 1994-12-02 | Exhaust gas desulfurization denitration method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08155264A true JPH08155264A (en) | 1996-06-18 |
Family
ID=17872447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6299428A Pending JPH08155264A (en) | 1994-12-02 | 1994-12-02 | Exhaust gas desulfurization denitration method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08155264A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0827774A1 (en) * | 1996-09-06 | 1998-03-11 | Dravo Lime Company | Process for removing SO2 and NOx from a gaseous stream |
| EP0836878A1 (en) * | 1996-10-15 | 1998-04-22 | Dravo Lime Company | Method for removing sulfur dioxide and nitrogen oxides from combustion gases |
| EP0858985A3 (en) * | 1997-02-18 | 1999-04-14 | Dravo Lime Company | Aqueous alkaline earth nitrate fertilizer composition and process for making same |
| CN101879403A (en) * | 2010-07-02 | 2010-11-10 | 洛阳市天誉环保工程有限公司 | Multifunctional reaction tank and purification process thereof for flue gas desulfurization and denitrification |
| JP2013538333A (en) * | 2010-07-01 | 2013-10-10 | アドバンスト フュージョン システムズ エルエルシー | How to induce a chemical reaction |
| KR101395594B1 (en) * | 2013-07-23 | 2014-05-19 | (주)플라즈마텍 | Apparatus for cleaning of harmful gas having complex pollutant |
| CN104307326A (en) * | 2014-10-24 | 2015-01-28 | 沈阳万捷重工机械有限公司 | Low-temperature wet-type ionization oxidization denitration and super-purification process |
-
1994
- 1994-12-02 JP JP6299428A patent/JPH08155264A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0827774A1 (en) * | 1996-09-06 | 1998-03-11 | Dravo Lime Company | Process for removing SO2 and NOx from a gaseous stream |
| EP0836878A1 (en) * | 1996-10-15 | 1998-04-22 | Dravo Lime Company | Method for removing sulfur dioxide and nitrogen oxides from combustion gases |
| EP0858985A3 (en) * | 1997-02-18 | 1999-04-14 | Dravo Lime Company | Aqueous alkaline earth nitrate fertilizer composition and process for making same |
| JP2013538333A (en) * | 2010-07-01 | 2013-10-10 | アドバンスト フュージョン システムズ エルエルシー | How to induce a chemical reaction |
| CN101879403A (en) * | 2010-07-02 | 2010-11-10 | 洛阳市天誉环保工程有限公司 | Multifunctional reaction tank and purification process thereof for flue gas desulfurization and denitrification |
| CN101879403B (en) | 2010-07-02 | 2012-09-05 | 洛阳市天誉环保工程有限公司 | Multifunctional reaction tank and purification process thereof for flue gas desulfurization and denitrification |
| KR101395594B1 (en) * | 2013-07-23 | 2014-05-19 | (주)플라즈마텍 | Apparatus for cleaning of harmful gas having complex pollutant |
| CN104307326A (en) * | 2014-10-24 | 2015-01-28 | 沈阳万捷重工机械有限公司 | Low-temperature wet-type ionization oxidization denitration and super-purification process |
| CN104307326B (en) * | 2014-10-24 | 2016-08-24 | 沈阳万捷重工机械有限公司 | Low temperature wet type ionized oxygen denitration, ultrapurification technique |
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