JPH05309231A - Device for treating exhaust gas - Google Patents
Device for treating exhaust gasInfo
- Publication number
- JPH05309231A JPH05309231A JP4118987A JP11898792A JPH05309231A JP H05309231 A JPH05309231 A JP H05309231A JP 4118987 A JP4118987 A JP 4118987A JP 11898792 A JP11898792 A JP 11898792A JP H05309231 A JPH05309231 A JP H05309231A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- planes
- electrodes
- reaction vessel
- numbered
- 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.)
- Withdrawn
Links
- 239000007789 gas Substances 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は発電プラント用ボイラ
ー、ディーゼルエンジン、ガスタービン、各種燃焼炉な
どから排出される排気ガス中のＮＯx （窒素配化物）を
効果的にかつ大容量除去することができるグロー放電プ
ラズマによる排ガス処理装置に関する。The present invention relates to a power plant boiler, diesel engine, gas turbine, NO x (nitrogen distribution compound) in exhaust gas discharged from various combustion furnaces effectively and be large removed The present invention relates to an exhaust gas treatment apparatus using glow discharge plasma that can perform
【０００２】[0002]
【従来の技術】図４〜図６は従来から用いられているグ
ロー放電プラズマによる排ガス処理装置の構成図であ
る。2. Description of the Related Art FIGS. 4 to 6 are schematic views of a conventionally used exhaust gas treatment apparatus using glow discharge plasma.
【０００３】この装置により、例えばディーゼルエンジ
ンの排ガス中のＮＯx を処理する場合を例にとり説明す
る。An example of processing NO x in the exhaust gas of a diesel engine with this device will be described.
【０００４】図４において、ディーゼルエンジン１０１
の排ガスを排気管１０２を介してサイクロン・コレクタ
ー１０３に通し、微粒子を除去した後、サイクロン・コ
レクター排気管１０４を経由して、プラズマ反応容器１
０５に導入する。In FIG. 4, a diesel engine 101
The exhaust gas of the gas is passed through the cyclone collector 103 through the exhaust pipe 102 to remove fine particles, and then the cyclone collector exhaust pipe 104 is passed through the plasma reaction container 1
Introduced in 05.
【０００５】プラズマ反応容器１０５は、図５、図６に
示すように、筒状のガラス反応容器１０９の内側に内部
電極１１０、外側に外部電極１１１が設けられている。
内部電極１１０および外部電極１１１間に電源１０６が
つながれている。As shown in FIGS. 5 and 6, the plasma reaction container 105 is provided with an internal electrode 110 inside a cylindrical glass reaction container 109 and an external electrode 111 outside.
A power supply 106 is connected between the inner electrode 110 and the outer electrode 111.
【０００６】以上において、内部電極１１０と外部電極
１１１の間に、電圧を印加すると、大気圧グロー放電現
象で排ガスはプラズマ化される。そして、例えばＮＯ2
は次の化学反応を起こす。 ２ＮＯ2 →２ＮＯ＋Ｏ2 ………（１） ２ＮＯ＋Ｏ2 →Ｎ2 ＋２Ｏ2 ………（２） なお、プラズマは、外部電界によって加速された高エネ
ルギー電子がガス分子と衝突し、励起分子、励起原子、
遊離基、イオンおよび中性粒子などが混在した電離気体
である。数ｅＶないし数１０ｅＶのエネルギーを得たＮ
Ｏx が化学的に活性な種となって、複雑な反応を起こし
た結果として、Ｎ2 およびＯ2 になると考えられる。In the above, when a voltage is applied between the internal electrode 110 and the external electrode 111, the exhaust gas is turned into plasma by the atmospheric pressure glow discharge phenomenon. Then, for example, NO 2
Causes the following chemical reaction. 2NO 2 → 2NO + O 2 (1) 2NO + O 2 → N 2 + 2O 2 (2) In plasma, high-energy electrons accelerated by an external electric field collide with gas molecules to generate excited molecules and excited atoms. ,
It is an ionized gas in which free radicals, ions and neutral particles are mixed. N obtained energy of several eV to several tens eV
It is considered that O x becomes N 2 and O 2 as a result of causing a complicated reaction by becoming a chemically active species.
【０００７】エンジンの排ガスをプラズマ反応容器１０
５で処理すると、例えば（ＮＯ＋ＮＯ2 ）が５０〜２０
０ｐｐｍ程度の濃度、および３０ないし６０ｌ／ｍｉｎ
程度の流量の範囲では、プラズマ発生電力が数Ｗないし
１０Ｗの範囲で、ＮＯx 除去率が８０ないし９０％を達
成できる。The exhaust gas of the engine is supplied to the plasma reactor 10
When processed in 5, for example, (NO + NO 2 ) is 50 to 20
Concentration of about 0 ppm, and 30 to 60 l / min
When the flow rate is in the range of approximately, the NO x removal rate of 80 to 90% can be achieved in the range of plasma generation power of several W to 10 W.
【０００８】したがって、ボイラー、ガスタービンおよ
びディーゼルエンジンなど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。Therefore, it is being utilized as an exhaust gas pollution control device for various combustion-related devices such as boilers, gas turbines and diesel engines.
【０００９】[0009]
【発明が解決しようとする課題】上記従来の装置では次
のような問題点があり、実用化が困難であった。 排ガス流量をある一定量、例えば６０ｌ／ｍｉｎ程
度以上に増加させるとグロー放電プラズマが発生しなく
なり、ＮＯx の除去ができなくなる。 電極の大きさを排ガス流れ方向へ長くするとＮＯx
除去効果が著しく低下する。 円筒状の反応容器を用いるので、例えば数１，００
０〜数１００，０００ｌ／ｍｉｎクラスの大容量化を考
えた場合、反応容器を多数並列接続することになるが、
この場合、円筒形からくる無効スペースの増大があり、
かさばる。 上記〜の理由により、例えば数１，０００〜数
１００，０００ｌ／ｍｉｎクラスの大容量排ガス処理装
置としての利用が困難である。The above-mentioned conventional apparatus has the following problems and is difficult to put into practical use. When the exhaust gas flow rate is increased to a certain amount, for example, about 60 l / min or more, glow discharge plasma is not generated and NO x cannot be removed. If the electrode size is increased in the exhaust gas flow direction, NO x
The removal effect is significantly reduced. Since a cylindrical reaction vessel is used, for example, several hundred
Considering increasing the capacity of 0 to several hundred thousand l / min class, many reaction vessels will be connected in parallel.
In this case, there is an increase in void space coming from the cylinder,
Bulky. For the above reasons (1), it is difficult to use as a large capacity exhaust gas treatment apparatus of several thousand to several hundred thousand l / min class.
【００１０】[0010]
【課題を解決するための手段】本発明は上記課題を解決
するため次の手段を講ずる。The present invention takes the following means in order to solve the above problems.
【００１１】すなわち、グロー放電プラズマを用いて排
ガス中の窒素酸化物を無害化する排ガス処理装置におい
て、上記排ガスを通す反応容器と、同反応容器内におい
て、上記排ガスの流れ方向に直交し、かつ流れ方向に次
第に間隔が広がる複数の平面上に一定間隔で平行に配列
されるとともに、奇数番目の上記平面および偶数番目の
上記平面上の上記配列が交互にずれ千鳥状に配置された
誘電体被覆の円柱状電極と、上記奇数番目の平面上の電
極および上記偶数番目の平面上の電極間に接続される電
源手段とを設ける。That is, in an exhaust gas treating apparatus for detoxifying nitrogen oxides in exhaust gas by using glow discharge plasma, a reaction vessel through which the exhaust gas passes and a flow direction of the exhaust gas in the reaction vessel and orthogonal to the exhaust gas flow direction, and Dielectric coatings arranged in parallel on a plurality of planes with gradually widening intervals in the flow direction at regular intervals, and the arrangements on the odd-numbered planes and the even-numbered planes are alternately staggered. Columnar electrodes, and power supply means connected between the electrodes on the odd-numbered planes and the electrodes on the even-numbered planes.
【００１２】[0012]
【作用】上記手段において、奇数番目の平面上の電極と
偶数番目の平面上の電極間にほぼ均一なグロー放電が発
生する。また電極は誘電体で被覆されているため防腐食
効果を有する。In the above means, almost uniform glow discharge is generated between the electrodes on the odd-numbered planes and the electrodes on the even-numbered planes. Further, since the electrodes are covered with a dielectric material, they have an anticorrosion effect.
【００１３】このグロー放電により排ガスは効率よく反
応して無害化される。The glow discharge efficiently reacts the exhaust gas to render it harmless.
【００１４】また、下流側に行くほど、電極間隔が広く
なるので、下流側ほどグロー放電電流が低減する。Further, since the electrode interval becomes wider toward the downstream side, the glow discharge current decreases toward the downstream side.
【００１５】一方、ＮＯx 濃度は下流側ほど低下するの
で、ＮＯx 濃度に応じたグロー放電電流が供給される。
このことによりＮＯx 除去率の向上と、消費電力の低減
及びプラズマ発生の安定化（下流部ではプラズマの電流
密度が増大しやすく印加電力が多すぎるとグロー放電プ
ラズマの発生が不安定になり、排ガス処理ができなくな
る）がえられる。Meanwhile, since the concentration of NO x is reduced toward the downstream side, the glow discharge current corresponding to the concentration of NO x is supplied.
This improves the NO x removal rate, reduces the power consumption and stabilizes the plasma generation (in the downstream part, the current density of plasma tends to increase, and when the applied power is too large, the generation of glow discharge plasma becomes unstable, It becomes impossible to treat exhaust gas).
【００１６】[0016]
【実施例】本発明の一実施例を図１〜図３により説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.
【００１７】なお、従来例で説明した部分は、同一の番
号をつけ説明を省略し、この発明に関する部分を主体に
説明する。The parts described in the conventional example are designated by the same reference numerals and the description thereof will be omitted, and the parts relating to the present invention will be mainly described.
【００１８】図１にて、公害対策対象用の燃焼炉１の排
ガスは、除じん器３を経て、プラズマ反応容器５に導か
れる。プラズマ反応容器５で排ガス中のＮＯx がプラズ
マ反応により除去され、排出される。図中６は、プラズ
マ反応容器５にグロー放電を発生させるための電源であ
る。In FIG. 1, the exhaust gas from the combustion furnace 1 for pollution control is guided to the plasma reaction vessel 5 through the dust remover 3. NO x in the exhaust gas is removed by the plasma reaction in the plasma reactor 5 and is discharged. In the figure, 6 is a power source for generating glow discharge in the plasma reaction vessel 5.
【００１９】プラズマ反応容器５の詳細を図２により説
明する。Details of the plasma reactor 5 will be described with reference to FIG.
【００２０】両端開口の角筒状の反応容器（本体）５１
が設けられる。反応容器（本体）５１は、ガラスやセラ
ミックス等の絶縁体製である。A square cylindrical reaction container (main body) 51 with openings at both ends
Is provided. The reaction container (main body) 51 is made of an insulator such as glass or ceramics.
【００２１】反応容器（本体）５１内に、排ガスの流れ
方向、すなわち、反応容器（本体）５１の軸に直交する
平面ａ、ｂ、…を考える。この平面ａ、ｂ、…の間隔
は、上流側Ａから下流側Ｂに３区分し、第１区分では
Ｐ、第２区分では１．５Ｐ、第３区分では２Ｐにとられ
る。またこの区分の長さ配分割合を約２：３：４とす
る。そして、奇数番目の平面ａ、ｃ、…上に一定間隔で
平行な電極５２をｎ個配置する（Ｄ11，Ｄ12，…Ｄ1n，
Ｄ31，Ｄ32，…）。また偶数番目の平面ｂ、ｄ、…上に
一定間隔で平行な電極５２を（ｎ−１）個配置する（Ｄ
21，Ｄ22，…Ｄ2(n-1)，Ｄ41，Ｄ42，…）。奇数番目の
平面ａ、ｃ、…上および偶数番目の平面ｂ、ｄ、…上の
電極５２は流れにクロスする方向にずらせて、図示のよ
うに千鳥状に配列する。Consider the flow direction of the exhaust gas in the reaction vessel (main body) 51, that is, the planes a, b, ... Orthogonal to the axis of the reaction vessel (main body) 51. The intervals between the planes a, b, ... Are divided into three sections from the upstream side A to the downstream side B, P in the first section, 1.5P in the second section, and 2P in the third section. Also, the length distribution ratio of this section is set to about 2: 3: 4. Then, n parallel electrodes 52 are arranged at regular intervals on the odd-numbered planes a, c, ... (D 11 , D 12 , ... D 1n ,
D 31 , D 32 , ...). Further, (n-1) parallel electrodes 52 are arranged at regular intervals on the even-numbered planes b, d ,.
21 , D 22 , ... D 2 (n-1) , D 41 , D 42 , ...). The electrodes 52 on the odd-numbered planes a, c, ... And on the even-numbered planes b, d, ... Are staggered as shown in the drawing by being offset in the direction crossing the flow.
【００２２】電極５２は円柱状、すなわち円筒形で、ガ
ラス等の誘電体５３で被覆されている。なお電極５２は
むくの円柱状としてもよい。The electrode 52 has a cylindrical shape, that is, a cylindrical shape, and is covered with a dielectric 53 such as glass. Note that the electrode 52 may have a solid columnar shape.
【００２３】奇数番目の平面ａ、ｃ、…上の電極５２は
電源６の一方の端子に、偶数番目の平面ｂ、ｄ、…上の
電極５２は他方の端子に接続される。The electrode 52 on the odd-numbered planes a, c, ... Is connected to one terminal of the power source 6, and the electrode 52 on the even-numbered planes b, d, ... Is connected to the other terminal.
【００２４】以上において、燃焼炉１で発生したＮＯx
を含む排ガスは、除じん器３で排ガス中の粒子類が除去
される。この排ガスは、プラズマ反応容器５の内部に導
入される。In the above, NO x generated in the combustion furnace 1
Particles in the exhaust gas containing the are removed by the dust remover 3. This exhaust gas is introduced into the plasma reaction container 5.
【００２５】プラズマ発生用の電源６から各電極５２に
電力が供給されると、奇数番目の平面ａ、ｃ、…上の電
極５２と偶数番目の平面ｂ、ｄ、…上の電極５２間にほ
ぼ均一なプラズマが発生する。このプラズマはグロー放
電プラズマであり、ＮＯx 、Ｎ2 、およびＯ2 などのガ
ス分子を励起および解離させ、化学的に活性な状態とな
る。それによって式（３）、（４）の化学反応がひき起
こされる。 ２ＮＯ→Ｎ2 ＋Ｏ2 ………（３） ２ＮＯ2 →Ｎ2 ＋２Ｏ2 ………（４） 上記反応式はプラズマ反応容器５に導入されたＮＯx が
無害なＮ2 およびＯ2になることを意味している。When electric power is supplied from the plasma generating power source 6 to the electrodes 52, the electrodes 52 on the odd-numbered planes a, c, ... And the electrodes 52 on the even-numbered planes b, d ,. A substantially uniform plasma is generated. The plasma is glow discharge plasma, NO x, N 2, and the gas molecules such as O 2 is excited and dissociated, the chemically active state. This causes the chemical reactions of formulas (3) and (4). 2NO → N 2 + O 2 (3) 2NO 2 → N 2 + 2O 2 (4) In the above reaction formula, NO x introduced into the plasma reactor 5 becomes harmless N 2 and O 2. Means
【００２６】本実施例の装置で得たＮＯx （２００ｐｐ
ｍ）の除去状況の一例を図３（ａ）、（ｂ）に、従来例
の場合と比較して示す。本実施例を実線で、従来例を点
線で示す。NO x (200 pp obtained by the apparatus of this embodiment)
An example of the removal state of m) is shown in FIGS. 3A and 3B in comparison with the case of the conventional example. This embodiment is shown by a solid line and the conventional example is shown by a dotted line.
【００２７】図３（ａ）は反応容器５の排ガス流れ方向
に沿う電力分布を示す。電極５２の間隔が排ガス入口側
（上流端）から出口側へ行くほど次第に広がっているの
で、図に示すように出口側（下流端）に近づくほど放電
電流が低減し、プラズマ発生に寄与する電力が少なくな
る。FIG. 3A shows an electric power distribution along the exhaust gas flow direction of the reaction vessel 5. Since the distance between the electrodes 52 gradually increases from the exhaust gas inlet side (upstream end) to the outlet side, the discharge current decreases as it approaches the outlet side (downstream end), as shown in the figure, and the electric power that contributes to plasma generation. Is less.
【００２８】また、反応容器５内では、反応容器入口の
ＮＯx 濃度が高く、出口のＮＯx 濃度が低くなる。従っ
てＮＯx 濃度に応じて、すなわちＮＯx 濃度の高い位置
には電力が多く、ＮＯx 濃度の低い位置には電力が少な
く供給される。このことによりＮＯx 除去率の向上と、
消費電力の低減及びプラズマ発生の安定化（下流部では
プラズマの電流密度が増大しやすく印加電力が多すぎる
とグロー放電プラズマの発生が不安定になり、排ガス処
理ができなくなる）がえられる。In the reaction vessel 5, the NO x concentration at the inlet of the reaction vessel is high and the NO x concentration at the outlet is low. Therefore, depending on the concentration of NO x, that is, power is at a high position of concentration of NO x often, the low position of concentration of NO x power is supplied less. This improves the NO x removal rate and
It is possible to reduce the power consumption and stabilize the plasma generation (when the current density of the plasma is likely to increase in the downstream portion and the applied power is too much, the generation of glow discharge plasma becomes unstable and exhaust gas treatment cannot be performed).
【００２９】したがって、残ＮＯx 濃度に適した電力が
供給されているので図（ｂ）に示すように、ＮＯx 低減
率は下流ほど向上し、出口では１００％程度のＮＯx 除
去率が得られている。Therefore, since the electric power suitable for the remaining NO x concentration is supplied, the NO x reduction rate improves toward the downstream side, and a NO x removal rate of about 100% is obtained at the outlet, as shown in FIG. Has been.
【００３０】従来の装置では、ＮＯx 濃度の低い反応容
器出口付近でも余分な電力が供給されているので、Ｎ2
とＯ2 に分解されたＮＯx が再結合するなどして、ＮＯ
x 除去率は３０％程度である。In the conventional apparatus, since extra power is supplied even near the outlet of the reaction vessel having a low NO x concentration, N 2
And NO x decomposed into O 2 recombines
The x removal rate is about 30%.
【００３１】このように本実施例の装置によれば、出口
側に行くほど電極間隔が広がっていくので、プラズマ電
流が低減し、電力配分が適正化されＮＯx の再結合がな
くなる。したがって反応容器を延長し、ガス流れ方向に
電極を増やせば除去率の低下がなく処理量を増大させる
ことができる。As described above, according to the apparatus of this embodiment, the electrode spacing becomes wider toward the outlet side, so that the plasma current is reduced, the power distribution is optimized, and the recombination of NO x is eliminated. Therefore, by extending the reaction vessel and increasing the number of electrodes in the gas flow direction, the removal rate does not decrease and the throughput can be increased.
【００３２】また、反応容器５を複数並列接続すること
により例えば流量１０，０００ｌ／ｍｉｎ〜数１００，
０００ｌ／ｍｉｎでも処理可能である。By connecting a plurality of reaction vessels 5 in parallel, for example, a flow rate of 10,000 l / min to several hundreds,
Processing is possible even at 000 l / min.
【００３３】さらに反応容器５が角筒状になっているの
で、反応容器を複数使用する場合、スペース効率良く配
置でき、従来方法の円筒状反応容器と比較して設備が小
さくできる。Furthermore, since the reaction vessel 5 is in the shape of a rectangular tube, when a plurality of reaction vessels are used, they can be arranged in a space-efficient manner, and the equipment can be made smaller than the conventional cylindrical reaction vessel.
【００３４】[0034]
【発明の効果】以上に説明したように、本発明の装置に
よれば反応容器の排ガス流れの後流側ほど電極間隔が広
くとられているので、残ＮＯx 濃度に応じてグロー放電
電力が適切に配分される。従って、電力効率もよく、グ
ロー放電の安定化も図られ、ＮＯx 除去率も向上する。As described above, according to the apparatus of the present invention, the electrode spacing is made wider toward the downstream side of the exhaust gas flow in the reaction vessel, so that the glow discharge power varies depending on the residual NO x concentration. Properly distributed. Therefore, the power efficiency is good, the glow discharge is stabilized, and the NO x removal rate is improved.
【図１】本発明の一実施例の構成系統図である。FIG. 1 is a configuration system diagram of an embodiment of the present invention.
【図２】同実施例の反応容器部の断面図である。FIG. 2 is a cross-sectional view of a reaction container portion of the same example.
【図３】同実施例の作用効果説明図である。FIG. 3 is an explanatory view of the function and effect of the embodiment.
【図４】従来例の構成系統図である。FIG. 4 is a configuration system diagram of a conventional example.
【図５】同従来例の反応容器部の斜視図である。FIG. 5 is a perspective view of a reaction container section of the conventional example.
【図６】同従来例の反応容器の横断面図である。FIG. 6 is a cross-sectional view of a conventional reaction container.
【符号の説明】 １ 燃焼炉 ３ 除じん器 ５ プラズマ反応容器 ６ 電源 １８ 排ガス入口管 ５１ 反応容器（本体） ５２ 電極 ５３ 誘電体[Explanation of Codes] 1 Combustion furnace 3 Dust remover 5 Plasma reaction vessel 6 Power supply 18 Exhaust gas inlet pipe 51 Reaction vessel (main body) 52 Electrode 53 Dielectric material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村上 信明 長崎市深堀町５丁目717番１号 三菱重工 業株式会社長崎研究所内 (72)発明者 内田 聡 長崎市飽の浦町１番１号 三菱重工業株式 会社長崎造船所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Nobuaki Murakami 5-717-1, Fukahori-cho, Nagasaki City Mitsubishi Heavy Industries, Ltd. Nagasaki Research Institute (72) Inventor Satoshi Uchida 1-1, Atsunoura-cho, Nagasaki-shi Mitsubishi Heavy Industries Ltd. Company Nagasaki Shipyard
Claims (1)
窒素酸化物を無害化する排ガス処理装置において、上記
排ガスを通す反応容器と、同反応容器内において、上記
排ガスの流れ方向に直交し、かつ流れ方向に次第に間隔
が広がる複数の平面上に一定間隔で平行に配列されると
ともに、奇数番目の上記平面および偶数番目の上記平面
上の上記配列が交互にずれ千鳥状に配置された誘電体被
覆の円柱状電極と、上記奇数番目の平面上の電極および
上記偶数番目の平面上の電極間に接続される電源手段と
を備えてなることを特徴とする排ガス処理装置。1. An exhaust gas treating apparatus for detoxifying nitrogen oxides in exhaust gas by using glow discharge plasma, comprising: a reaction vessel through which the exhaust gas is passed, and a direction perpendicular to the flow direction of the exhaust gas in the reaction vessel; Dielectric coatings arranged in parallel on a plurality of planes with gradually widening intervals in the flow direction at regular intervals, and the arrangements on the odd-numbered planes and the even-numbered planes are alternately staggered. 2. An exhaust gas treating apparatus comprising: the columnar electrode, and a power supply unit connected between the electrodes on the odd-numbered planes and the electrodes on the even-numbered planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4118987A JPH05309231A (en) | 1992-05-12 | 1992-05-12 | Device for treating exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4118987A JPH05309231A (en) | 1992-05-12 | 1992-05-12 | Device for treating exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05309231A true JPH05309231A (en) | 1993-11-22 |
Family
ID=14750204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4118987A Withdrawn JPH05309231A (en) | 1992-05-12 | 1992-05-12 | Device for treating exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05309231A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003053550A1 (en) * | 2001-12-21 | 2003-07-03 | Furrex Co., Ltd. | Discharging method for gas decomposition and discharging device for gas decomposition |
| WO2004112940A1 (en) * | 2003-06-17 | 2004-12-29 | Nittetsu Mining Co. Ltd. | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
-
1992
- 1992-05-12 JP JP4118987A patent/JPH05309231A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003053550A1 (en) * | 2001-12-21 | 2003-07-03 | Furrex Co., Ltd. | Discharging method for gas decomposition and discharging device for gas decomposition |
| WO2004112940A1 (en) * | 2003-06-17 | 2004-12-29 | Nittetsu Mining Co. Ltd. | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
| JPWO2004112940A1 (en) * | 2003-06-17 | 2006-07-27 | 日鉄鉱業株式会社 | Gas processing method and gas processing apparatus using oxidation catalyst and low-temperature plasma |
| US7347979B2 (en) | 2003-06-17 | 2008-03-25 | Nittetsu Mining Co., Ltd. | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
| CN100482323C (en) | 2003-06-17 | 2009-04-29 | 日铁矿业株式会社 | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990803 |