JPH0788328A - Nox and sox purging device and its maintenance method - Google Patents
Nox and sox purging device and its maintenance methodInfo
- Publication number
- JPH0788328A JPH0788328A JP5236837A JP23683793A JPH0788328A JP H0788328 A JPH0788328 A JP H0788328A JP 5236837 A JP5236837 A JP 5236837A JP 23683793 A JP23683793 A JP 23683793A JP H0788328 A JPH0788328 A JP H0788328A
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- JP
- Japan
- Prior art keywords
- absorbent
- layer
- oxidation
- purification
- layers
- 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.)
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Classifications
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- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、窒素酸化物（ＮＯx）
および硫黄酸化物（ＳＯx)の浄化装置に関する。さらに
詳しくは、自動車道路トンネルの排ガス浄化をはじめ交
差点、特に密閉度の高い駐車場や交差点付近のビル内空
気浄化、ＮＯxとＳＯxを同時に扱う無機化学工場等の空
気浄化、特に脱硝装置として利用されるものである。FIELD OF THE INVENTION The present invention relates to nitrogen oxides (NO x ).
And a device for purifying sulfur oxides (SO x ). More specifically, it is used for purification of exhaust gas from motorway tunnels, air purification in buildings near intersections, especially in highly closed parking lots and intersections, air purification in inorganic chemical factories that handle NO x and SO x at the same time, especially as denitration equipment. It is used.
【０００２】[0002]
【従来の技術】近年、自動車から排出される窒素酸化物
や硫黄酸化物は、地域環境悪化や地球環境の破壊につな
がるところから、それらの発生を防いだり浄化したりす
る技術の開発が進められている。しかし、特に車社会が
発展していく中で、車、特にディーゼルエンジン車から
発生するＮＯxについては、発生後すぐに大気と混じっ
てしまい低濃度で大風量になることから、その浄化は困
難である。自動車道路トンネルは、ある程度密閉された
空間内に排気ガスが停滞するため、トンネル外より有害
ガス濃度が上昇する。このようなトンネルにおいては、
内部の有毒ガスの濃度が基準値を超えないように換気し
ているが、排気口からは通常大気の数十倍以上のＮＯx
とその１／１０程度のＳＯxが同時に排出される。最
近、都市部の地下を利用した自動車トンネルが計画され
ているが、トンネル内空気の排気場所も、もともと環境
の悪い場所であり、更なる環境の悪化が懸念され、排ガ
スの浄化装置が模索されている。2. Description of the Related Art In recent years, nitrogen oxides and sulfur oxides emitted from automobiles lead to the deterioration of the local environment and the destruction of the global environment. Therefore, the development of a technology for preventing or purifying them has been promoted. ing. However, especially as the automobile society develops, NO x generated from vehicles, especially diesel engine vehicles, mixes with the atmosphere immediately after generation and becomes a large air volume with low concentration, so purification is difficult. Is. In a highway tunnel, exhaust gas stagnates in a space that is hermetically sealed to some extent, so the concentration of harmful gases rises from outside the tunnel. In such a tunnel,
Ventilation is performed so that the concentration of toxic gas inside does not exceed the standard value, but from the exhaust port, NO x which is several tens of times more than normal NO x.
And about 1/10 of the SO x is discharged at the same time. Recently, a car tunnel using underground underground in urban areas is planned, but the air exhaust place in the tunnel is originally a place with bad environment, and there is concern that the environment will deteriorate further. ing.
【０００３】従来、この種の浄化装置は特開平１−２２
４０３１号公報に見られるような脱硝装置が一般的であ
った。以下その構成について図７を参照しながら説明す
る。図７に示すように、ファン１５により引き込まれた
トンネル排ガス１１に含まれるＮＯxの主成分である一
酸化窒素（ＮＯ）および二酸化窒素（ＮＯ2）のうち、
ＮＯは酸化部においてＮＯ2に酸化される。この酸化に
よって得られたＮＯ2と、もともと存在していたＮＯ2の
両者は、吸収部１３に設置されたアルカリ性成分を含ん
だ乾式吸収剤層１４により吸収される。Conventionally, this type of purifying apparatus has been disclosed in Japanese Patent Laid-Open No. 1-22.
A denitration device as disclosed in Japanese Patent No. 4031 has been general. The configuration will be described below with reference to FIG. 7. As shown in FIG. 7, among nitric oxide (NO) and nitrogen dioxide (NO 2 ) which are the main components of NO x contained in the tunnel exhaust gas 11 drawn in by the fan 15,
NO is oxidized to NO 2 in the oxidation section. And NO 2 obtained by this oxidation, original both present are a NO 2, it is absorbed by the dry absorbent layer 14 containing the installed alkaline component to the absorption section 13.
【０００４】[0004]
【発明が解決しようとする課題】このような従来例に示
された脱硝装置により、実際のトンネル排ガスを浄化し
ようとすると、アルカリ性成分を含んだ乾式吸収剤の吸
収能力が大幅に低下する現象が見られる。たとえば、実
験室レベルの評価で調整されたサンプルガス（清浄エア
ー中にＮＯ2ガスを一定量混入されたもの）からのＮＯ2
吸収性能が１０ｍｇ／ｃｃ（吸収剤１ｃｃあたり１０ｍ
ｇのＮＯ2を吸収できるもの）あるものを、実際のトン
ネル排ガスで評価すると、１ｍｇ／ｃｃ以下になってし
まい、実使用にはほど遠い性能しか発揮できない。これ
は実排ガスにはＮＯxの他にＳＯxを始め各種の酸性ガス
成分が多く含まれているためで、これらのガス成分が吸
収剤の表面に吸着されると、吸収剤のもつＮＯ2浄化性
能が急激に低下するためである。ＳＯx成分はＮＯx成分
の１％であっても吸収剤の性能を大きく低下させる。When an actual exhaust gas from a tunnel is purified by the denitration apparatus shown in the prior art, there is a phenomenon that the absorption capacity of the dry absorbent containing an alkaline component is significantly lowered. Can be seen. For example, NO 2 from laboratory sample gas adjusted in the evaluation of (those of NO 2 gas was constant amount mixed in clean air)
Absorption capacity is 10 mg / cc (10 m per 1 cc of absorbent)
Something that can absorb g NO 2 ) will be 1 mg / cc or less when evaluated in an actual tunnel exhaust gas, and performance that is far from actual use can be exhibited. This is because actual exhaust gas contains a large amount of various acidic gas components such as SO x in addition to NO x . When these gas components are adsorbed on the surface of the absorbent, NO 2 This is because the purification performance drops sharply. Even if the SO x component is 1% of the NO x component, the performance of the absorbent is greatly deteriorated.
【０００５】従って、本発明の第１の目的は、上記のよ
うなＳＯxの影響を考慮して、十分に実用化可能な窒素
酸化物および硫黄酸化物の浄化装置を提供することであ
る。本発明の第２の目的は、高性能な窒素酸化物および
硫黄酸化物の浄化性能を維持できるメンテナンス方法を
提供することである。Therefore, a first object of the present invention is to provide a purifying apparatus for nitrogen oxides and sulfur oxides which can be fully put into practical use in consideration of the influence of SO x as described above. A second object of the present invention is to provide a maintenance method capable of maintaining high-performance purification performance of nitrogen oxides and sulfur oxides.
【０００６】[0006]
【課題を解決するための手段】上記第１の目的を達成す
るための本発明の第１の技術手段は、酸化部においてＮ
ＯをＮＯ2に酸化するとともにＳＯ2や他の酸性ガスも酸
化して乾式吸収剤層に吸収され易くするとともに、吸収
部には少なくとも２層の独立した、アルカリ性成分を含
んだ乾式吸収剤層を設けることである。また、上記第２
の目的を達成するための本発明の第２の技術手段は、浄
化装置の性能を維持するための吸収剤のメンテナンス方
法として、再生された吸収剤もしくは新品吸収剤を吸収
部の最風下層に設置し、各層の吸収剤をそれぞれ１層ず
つ風上側に移動し、最風上層の吸収剤を取り出す操作を
行うようにすることである。The first technical means of the present invention for achieving the above first object is to provide N in the oxidation part.
O 2 is oxidized to NO 2 and SO 2 and other acidic gases are also oxidized to be easily absorbed by the dry absorbent layer, and at least two independent dry absorbent layers containing an alkaline component are provided in the absorption section. Is to be provided. In addition, the second
The second technical means of the present invention for achieving the above-mentioned object is a method of maintaining an absorbent for maintaining the performance of the purification device, in which a regenerated absorbent or a new absorbent is placed in the lowermost leeward layer of the absorbent section. This is to install and move the absorbent in each layer one layer to the windward side, and to take out the absorbent in the uppermost windward layer.
【０００７】[0007]
【作用】上記の技術手段によってＳＯxおよびその他の
酸性ガス成分は、乾式吸収剤層の風上側から第１層目で
吸収され、第２層目以後はその影響を受けずに十分な脱
硝性能を発揮することができる。本発明の装置は、酸化
部を有しており、ＳＯxおよび他の酸性ガス成分もＮＯ
と同様酸化され、第１層目の乾式吸収剤層でほぼ完全に
吸収される。吸収剤層の交換は同時に全てを交換せず、
最風上側の第１層を取り除き第２層目以降をそれぞれ１
層ずつ風上側に移動し、新しいもの、もしくは再生され
た乾式吸収剤を最風下側に挿入する。こうすることによ
ってほぼ十分にＮＯxを吸収した乾式吸収剤が風上側第
１層目に位置し、ＳＯx等の酸性ガスを吸収する役目を
果たし、第２層目以降が十分に高率よくＮＯxを吸収す
ることができる。By the above technical means, SO x and other acidic gas components are absorbed in the first layer from the windward side of the dry absorbent layer and are not affected by the second layer and thereafter, and sufficient denitration performance is obtained. Can be demonstrated. The device of the present invention has an oxidation part, and SO x and other acidic gas components are also NO.
It is oxidized in the same manner as above and is almost completely absorbed by the first dry absorbent layer. Replacing the absorbent layer does not replace all at the same time,
The first layer on the windward side is removed and the second and subsequent layers are each set to 1
Move layer by layer to the upwind side and insert new or regenerated dry absorbent on the downwind side. By doing so, the dry absorbent that has absorbed NO x almost completely is located in the first layer on the windward side, plays a role of absorbing acid gas such as SO x , and the second layer and the subsequent layers are sufficiently highly efficient. It can absorb NO x .
【０００８】[0008]
【実施例】以下に、本発明の実施例について説明する。
本発明はこれら実施例のみに限定されるものではない。 ［実施例１］図１は本発明の浄化装置の一実施例を示
す。１０は浄化装置本体であり、ＮＯXおよびＳＯX、他
の酸性ガスを含んだ被浄化ガスは１１で示す矢印のよう
に浄化装置本体１０を通過する。１２は酸化部で、電極
板を用いた放電により酸化反応を起こさせるか、オゾン
を供給して酸化させる方式を用いる。酸化部１２の風下
側には吸収部１３が配してあり、それぞれ独立した３層
の乾式吸収剤層１４を設置した例を示している。１５は
被浄化ガスを駆動するファンで、ここでは本体の出口側
に設置したが、乾式吸収剤層の間や酸化部と吸収部の
間、装置本体の入り口に設置してもよい。EXAMPLES Examples of the present invention will be described below.
The invention is not limited to these examples only. [Embodiment 1] FIG. 1 shows an embodiment of the purifying apparatus of the present invention. Reference numeral 10 denotes a purifying apparatus main body, and the gas to be purified containing NO X and SO X and other acidic gas passes through the purifying apparatus main body 10 as indicated by an arrow 11. Reference numeral 12 denotes an oxidizer, which uses a method of causing an oxidation reaction by discharge using an electrode plate or supplying ozone to oxidize. An absorption part 13 is arranged on the leeward side of the oxidation part 12, and an example is shown in which three independent dry absorbent layers 14 are installed. Reference numeral 15 denotes a fan for driving the gas to be purified, which is installed on the outlet side of the main body here, but may be installed on the inlet of the apparatus main body between the dry absorbent layers or between the oxidizing section and the absorbing section.
【０００９】上記構成の浄化装置において、酸化部ＮＯ
の９５％をＮＯ2に変換するようにオゾンを供給する。
また、吸収部は、活性炭粉末をセメント材の石膏により
硬化させた粒径１０ｍｍの粒子にＫＯＨを２０重量％吸
着させたものを乾式吸収剤とし、それぞれ独立した層の
吸収剤量は１００リットルとする。こうしてＮＯを２．
５ｐｐｍ、ＮＯ2を０．５ｐｐｍ、ＳＯ2を０．４ｐｐｍ
含む被浄化ガスを１，０００ｍ3／ｈの割合で上記浄化
装置に供給して窒素酸化物の浄化率を調べた。その結果
を図２に示す。Ａは乾式吸収剤層を３層設置した場合の
窒素酸化物浄化率を経過時間を横軸として示している。
Ｂは２層設置した場合、Ｃは比較のために実施した１層
のみ設置した場合を示している。なお、ＳＯ2はいずれ
の場合もほぼ１００％浄化された。図３は、ここで用い
た乾式吸収剤の性能を把握するために実施したテストの
結果を示すもので、条件は前記と同様であるが実際の排
ガスのかわりにＮＯxのみを含んだ調整されたエアーを
用いた。Ｄは１層設置時の性能、Ｅは２層設置時の性能
を示す。図４は、この調整されたエアーでのテストにＳ
Ｏ2を混ぜていった場合の評価結果である。乾式吸収剤
層が１層の場合の評価において、ＮＯx浄化率が５０％
を切るまでの時間とＳＯ2の混入量を比較してある。ほ
ぼＳＯ2混入量が０．０３ｐｐｍ（ＮＯx量のほぼ１％）
を超える時点から乾式吸収剤の性能が大きく劣化してい
る。図２〜４から明らかなように、ＳＯ2等の酸性ガス
を含んだ実際の排ガスで乾式吸収剤１層のみの設置では
大幅に性能が低下するが、２層以上を設置すると２層目
以降は本来のＮＯx浄化性能を発揮することができる。In the purifying device having the above-mentioned structure, the oxidation part NO
Ozone is supplied so as to convert 95% of NO 2 into NO 2 .
In addition, the absorbent portion is a dry absorbent material in which 20% by weight of KOH is adsorbed on particles having a particle diameter of 10 mm obtained by hardening activated carbon powder with gypsum as a cement material, and the amount of the absorbent material in each independent layer is 100 liters. To do. In this way NO is 2.
5ppm, NO 2 0.5ppm, SO 2 0.4ppm
The purification gas containing nitrogen was supplied to the above-mentioned purification device at a rate of 1,000 m 3 / h to examine the purification rate of nitrogen oxides. The result is shown in FIG. A shows the nitrogen oxide purification rate when three dry absorbent layers are provided with the elapsed time as the horizontal axis.
B shows the case where two layers are installed, and C shows the case where only one layer is installed for comparison. It should be noted that SO 2 was purified almost 100% in each case. FIG. 3 shows the results of tests conducted to understand the performance of the dry absorbent used here. The conditions are the same as those described above, but the conditions are adjusted to include only NO x instead of the actual exhaust gas. Used air. D shows the performance when a single layer is installed, and E shows the performance when a two layer is installed. Figure 4 shows the S for the test with this conditioned air.
It is an evaluation result when O 2 is mixed. In the evaluation with one dry absorbent layer, the NO x purification rate is 50%.
The time until turning off is compared with the amount of SO 2 mixed. Approximately 0.03 ppm of SO 2 mixed (approximately 1% of NO x amount)
The performance of the dry absorbent is greatly deteriorated from the point of exceeding. As is clear from FIGS. 2 to 4, the performance is significantly reduced when only one layer of the dry absorbent is installed with the actual exhaust gas containing an acidic gas such as SO 2 , but when two or more layers are installed, the second and subsequent layers are installed. Can exhibit the original NO x purification performance.
【００１０】［実施例２］図５は浄化装置のメンテナン
スの実施例を示す。図５（ａ）の２１、２２、２３はそ
れぞれ独立した乾式吸収剤層を示す。それぞれの乾式吸
収剤層が未使用の状態で排ガス浄化をスタートし、浄化
率が一定値を下回ったとき最風上側の第１層である２１
を取り出し、２２、２３をそれぞれ風上側に移動し未使
用の２４を最風下側に挿入した状態を（ｂ）に示してい
る。（ｃ）、（ｄ）は、同様に浄化率が一定値を下回っ
たときに、順次未使用または再生した吸収剤層２５、２
６を追加して同様のメンテナンスを実施していくことを
示している。なお、吸収剤層の再生方法としては、前記
の粒子を水洗した後、ＫＯＨを吸着させる方法がある。
図６は本実施例によって得られた評価結果を示す。評価
条件は実施例１と同じ実排ガスを用いている。メンテナ
ンスは装置の浄化率が５０％を切ったときに実施した。
ａは評価スタート時の結果で、図５（ａ）の状態のとき
の浄化率推移を示す。ｂは図５（ｂ）、ｃは図５
（ｃ）、ｄは図５（ｄ）の時の浄化推移を示す。ｂ〜ｆ
に示すように、それぞれのメンテナンス後の特性は、新
しく設置された乾式吸収剤層が十分に特性を発揮してい
る。[Embodiment 2] FIG. 5 shows an embodiment of maintenance of the purifying apparatus. Reference numerals 21, 22, and 23 in FIG. 5A indicate independent dry absorbent layers. It is the first layer on the most windward side when the purification rate of exhaust gas starts when the dry absorbent layers are unused and the purification rate falls below a certain value.
(B) shows a state in which 22 is taken out, 22 and 23 are respectively moved to the windward side, and an unused 24 is inserted to the leeward side. Similarly, (c) and (d) show the absorbent layers 25, 2 which are sequentially unused or regenerated when the purification rate falls below a certain value.
It indicates that 6 is added and similar maintenance is carried out. As a method of regenerating the absorbent layer, there is a method of washing the above particles with water and then adsorbing KOH.
FIG. 6 shows the evaluation results obtained in this example. As the evaluation conditions, the same actual exhaust gas as in Example 1 is used. Maintenance was carried out when the purification rate of the device fell below 50%.
“A” is the result at the start of the evaluation, and shows the transition of the purification rate in the state of FIG. b is FIG. 5 (b), c is FIG.
5C and d show the transition of purification in the case of FIG. bf
As shown in Fig. 5, the newly installed dry absorbent layer is fully exhibiting its properties after maintenance.
【００１１】［比較例］図８はそれぞれ独立した乾式吸
収剤層を３層設置しているが、浄化率が一定値以下にな
ったとき３層同時に交換する方法で性能を評価した結果
を示している。図８（ａ）で浄化試験をスタートし、浄
化率が一定値を下回ったとき（ｂ）に示すように、３
１、３２、３３の乾式吸収剤層を全て取り除き、新しく
未使用の乾式吸収剤層３４、３５、３６を設置する。
（ｃ）も同様に新しい吸収剤層３７、３８、３９を設置
したものである。図９は浄化率が５０％を切ったときに
乾式吸収剤層を入れ替える方法で評価を実施した結果を
示す。ｇは図８（ａ）の状態、ｈは図８（ｂ）の状態、
ｉは図８（ｃ）の状態の時の浄化率の推移を示す。[Comparative Example] FIG. 8 shows the results of evaluation of performance by a method in which three independent dry absorbent layers are installed, but when the purification rate is below a certain value, three layers are simultaneously replaced. ing. When the purification test is started in FIG. 8 (a) and the purification rate falls below a certain value, as shown in (b), 3
All the dry absorbent layers 1, 32 and 33 are removed, and new and unused dry absorbent layers 34, 35 and 36 are installed.
Similarly, in (c), new absorbent layers 37, 38, 39 are provided. FIG. 9 shows the results of evaluation performed by a method of replacing the dry absorbent layer when the purification rate is less than 50%. g is the state of FIG. 8 (a), h is the state of FIG. 8 (b),
i shows the transition of the purification rate in the state of FIG.
【００１２】[0012]
【発明の効果】以上のように本発明の２層以上の乾式吸
収剤層を有する窒素酸化物および硫黄酸化物浄化装置
は、乾式吸収剤のもつＮＯx浄化性能をＳＯxや他の酸性
ガス成分を有する実排ガスにおいても十分に発揮するこ
とができる。また、本発明のメンテナンス方法は、本発
明の実施例２（図６）と比較例（図９）を比較すること
でその優位性が明らかになっている。すなわち図６と図
９で未使用の３層からスタートし１回目のメンテナンス
時点（ともにＰ1点）はほぼ同じ時間であるが、初期設
置された３層が全て取り替えられた時点の浄化率５０％
の点は、比較例の図９Ｐ2点が６７０時間程度であるの
に対して、実施例２の図６のＰ4点は８３０時間程度ま
で浄化率を維持している。すなわち、乾式吸収剤の交換
量を大幅に削減できることを示している。以上のよう
に、本発明によれば、実用化可能な窒素酸化物および硫
黄酸化物浄化装置を提供できる。INDUSTRIAL APPLICABILITY As described above, the nitrogen oxide and sulfur oxide purification apparatus having two or more dry absorbent layers of the present invention has the NO x purification performance of the dry absorbent as SO x and other acidic gases. It can be sufficiently exerted even in an actual exhaust gas containing components. The superiority of the maintenance method of the present invention has been clarified by comparing Example 2 (FIG. 6) of the present invention and Comparative Example (FIG. 9). That is, in FIG. 6 and FIG. 9, starting from unused three layers, the first maintenance time (both P 1 points) is almost the same time, but the purification rate 50 at the time when all the three initially installed layers are replaced. %
The points, whereas FIG. 9P 2 points of the comparative example is about 670 hours, P 4 points 6 of Example 2 has maintained purification rate up to about 830 hours. That is, it has been shown that the replacement amount of the dry absorbent can be significantly reduced. As described above, according to the present invention, it is possible to provide a practically applicable nitrogen oxide and sulfur oxide purification device.
【図１】本発明の第１実施例の窒素酸化物および硫黄酸
化物浄化装置の構成を示す縦断面略図である。FIG. 1 is a schematic vertical cross-sectional view showing the configuration of a nitrogen oxide and sulfur oxide purification device according to a first embodiment of the present invention.
【図２】本発明の第１実施例の浄化装置によるＮＯx浄
化率を従来例と比較して示す図である。FIG. 2 is a diagram showing a NO x purification rate by the purification device of the first embodiment of the present invention in comparison with a conventional example.
【図３】実施例に用いた吸収剤の性能を示す図である。FIG. 3 is a diagram showing the performance of the absorbent used in Examples.
【図４】被浄化ガス中のＳＯx濃度とＮＯx浄化性能との
関係を示す図である。FIG. 4 is a diagram showing the relationship between the SO x concentration in the gas to be purified and the NO x purification performance.
【図５】本発明の第２実施例における浄化装置の乾式吸
収剤層のメンテナンスの手順を示す図である。FIG. 5 is a diagram showing a procedure of maintenance of the dry absorbent layer of the purification device in the second embodiment of the present invention.
【図６】本発明の第２実施例の浄化装置による性能を示
す図である。FIG. 6 is a diagram showing the performance of the purifying device according to the second embodiment of the present invention.
【図７】従来の脱硝装置の構成を示す縦断面略図であ
る。FIG. 7 is a schematic vertical sectional view showing the configuration of a conventional denitration device.
【図８】比較例における浄化装置の乾式吸収剤層のメン
テナンス手順を示す図である。FIG. 8 is a diagram showing a maintenance procedure of a dry absorbent layer of a purifying device in a comparative example.
【図９】比較例の装置による性能を示す図である。FIG. 9 is a diagram showing the performance of the device of the comparative example.
【符号の説明】 １０ 浄化装置本体 １１ ガスの流れ １２ 酸化部 １３ 吸収部 １４ 乾式吸収剤層 １５ ファン ２１〜２６ 乾式吸収剤層[Explanation of Codes] 10 Purification Device Main Body 11 Gas Flow 12 Oxidation Part 13 Absorption Part 14 Dry Absorbent Layer 15 Fans 21-26 Dry Absorbent Layer
Claims (2)
れた二酸化窒素を含む酸性ガスを吸収するアルカリ性成
分を含んだ乾式吸収剤を有する吸収部とを具備し、前記
吸収部は少なくとも２層の独立した吸収剤層を有する窒
素酸化物および硫黄酸化物の浄化装置。1. An oxidizing part for oxidizing a gas to be purified, and an absorbing part having a dry absorbent containing an alkaline component absorbing an acidic gas containing oxidized nitrogen dioxide, wherein the absorbing part is at least 2 Nitrogen oxide and sulfur oxide purification device having independent absorber layers of layers.
方法であって、再生された吸収剤もしくは新品吸収剤を
吸収部の最風下層に設置し、各吸収剤をそれぞれ１層ず
つ風上側に移動し、最風上層の吸収剤を取り出し廃棄ま
たは再生するようにした窒素酸化物および硫黄酸化物の
浄化装置のメンテナンス方法。2. The purifying apparatus maintenance method according to claim 1, wherein a regenerated absorbent or a new absorbent is installed in a lowermost leeward layer of the absorbent section, and each absorbent is provided one layer upwind. A maintenance method for a nitrogen oxide and sulfur oxide purification device that is moved and the absorbent in the uppermost wind layer is taken out and discarded or regenerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23683793A JP3308065B2 (en) | 1993-09-22 | 1993-09-22 | Nitrogen oxide and sulfur oxide purifying apparatus and its maintenance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23683793A JP3308065B2 (en) | 1993-09-22 | 1993-09-22 | Nitrogen oxide and sulfur oxide purifying apparatus and its maintenance method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0788328A true JPH0788328A (en) | 1995-04-04 |
| JP3308065B2 JP3308065B2 (en) | 2002-07-29 |
Family
ID=17006526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23683793A Expired - Fee Related JP3308065B2 (en) | 1993-09-22 | 1993-09-22 | Nitrogen oxide and sulfur oxide purifying apparatus and its maintenance method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3308065B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006150207A (en) * | 2004-11-29 | 2006-06-15 | Mitsubishi Heavy Ind Ltd | Washing solution for nitrogen oxide absorbent, and washing method and regeneration method of nitrogen oxide absorbent using it |
| JP2009095801A (en) * | 2007-10-18 | 2009-05-07 | Toshiba Corp | NOx PURIFYING APPARATUS IN NORMAL-TEMPERATURE GAS |
| CN111375303A (en) * | 2019-12-24 | 2020-07-07 | 广州澳企实验室技术股份有限公司 | Environment-friendly machine for removing chemical gaseous pollutants in laboratory air |
-
1993
- 1993-09-22 JP JP23683793A patent/JP3308065B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006150207A (en) * | 2004-11-29 | 2006-06-15 | Mitsubishi Heavy Ind Ltd | Washing solution for nitrogen oxide absorbent, and washing method and regeneration method of nitrogen oxide absorbent using it |
| JP2009095801A (en) * | 2007-10-18 | 2009-05-07 | Toshiba Corp | NOx PURIFYING APPARATUS IN NORMAL-TEMPERATURE GAS |
| CN111375303A (en) * | 2019-12-24 | 2020-07-07 | 广州澳企实验室技术股份有限公司 | Environment-friendly machine for removing chemical gaseous pollutants in laboratory air |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3308065B2 (en) | 2002-07-29 |
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