JPH1157392A - Treatment of waste gas and device therefor - Google Patents
Treatment of waste gas and device thereforInfo
- Publication number
- JPH1157392A JPH1157392A JP9220438A JP22043897A JPH1157392A JP H1157392 A JPH1157392 A JP H1157392A JP 9220438 A JP9220438 A JP 9220438A JP 22043897 A JP22043897 A JP 22043897A JP H1157392 A JPH1157392 A JP H1157392A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- adsorbent
- combustion catalyst
- layer
- adsorption
- 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.)
- Pending
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排ガス処理方法お
よび装置に係り、特に排ガス中の悪臭または有害成分
（以下、単に有害成分ということがある）を吸着剤で吸
着し、これを脱着し、脱着された悪臭・有害成分を触媒
燃焼により燃焼させて除去する排ガス処理方法および装
置であって、上記方法、装置に用いる吸着剤および触媒
の使用量を減らすとともに、装置のコンパクト化と使用
エネルギーの節減を可能とした排ガス処理方法および装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for treating exhaust gas, and more particularly to a method and apparatus for adsorbing odors or harmful components (hereinafter, sometimes simply referred to as harmful components) in exhaust gas with an adsorbent, An exhaust gas treatment method and apparatus for combusting and removing deodorized odorous and harmful components by catalytic combustion, which reduces the amount of adsorbents and catalysts used in the above method and apparatus, and reduces the size and energy consumption of the apparatus. The present invention relates to an exhaust gas treatment method and apparatus capable of saving energy.
【０００２】[0002]
【従来の技術】化学工業等の反応工程から排出される排
ガスや、樹脂、合板、半導体等の製造工程（焼成、乾
燥、洗浄）から排出される排ガス、塗装工程の焼付け、
乾燥工程から排出される排ガス中には通常微量の悪臭成
分や有害成分が含まれている。化学工業においては、原
料の分解ガスや未収率分としての一酸化炭素、炭化水
素、酢酸などの有機酸類、アルデヒド類等がその代表的
なものとして含まれる。2. Description of the Related Art Exhaust gas discharged from a reaction process such as a chemical industry, exhaust gas discharged from a manufacturing process (firing, drying, washing) of resin, plywood, semiconductor, etc., baking in a coating process,
Exhaust gas discharged from the drying process usually contains trace amounts of malodorous components and harmful components. In the chemical industry, typical examples thereof include decomposition gases of raw materials, carbon monoxide, hydrocarbons, organic acids such as acetic acid, and aldehydes as unyielded components.
【０００３】樹脂等の製造工程や、塗装工程からは溶剤
として使われているトルエンやアセトン等のアルコール
系芳香族炭化水素等が排ガス中に含まれる。これら成分
を含む排ガスは、そのまま排気されると悪臭を発するこ
とや人的に有害であることなどから、公害防止の観点よ
り排気前に事前に脱臭するとともに、無害化する処理設
備が設けられている。[0003] Exhaust gas contains alcoholic aromatic hydrocarbons such as toluene and acetone which are used as solvents from the resin production process and the coating process. Exhaust gas containing these components emits offensive odor and is harmful to human beings when it is exhausted as it is. I have.
【０００４】これらの悪臭、有害成分を含む排ガスを処
理する従来技術としては、吸着法、吸収法、燃焼酸化法
の３つに大別される処理方法がある。この中の吸着法
は、シリカゲル、アルミナゲル、ゼオライト、粘土鉱
物、活性炭等の吸着力を利用する方法である。また、吸
収法は処理対象物質の化学反応性（酸塩基反応等）を利
用する方法であり、アンモニア、アミン類等の塩基性化
合物には酸による洗浄が、また酸性のメルカプタン類に
はアルカリ洗浄が有効に用いられる。また、次亜塩素
酸、塩素、過マンガン酸カリウム等の水溶液は強い酸化
剤であり、これら水溶液を用いて吸収、酸化分解する方
法もある。[0004] As a conventional technique for treating the exhaust gas containing these offensive odors and harmful components, there are roughly three treatment methods: an adsorption method, an absorption method, and a combustion oxidation method. Among these, the adsorption method is a method utilizing the adsorption power of silica gel, alumina gel, zeolite, clay mineral, activated carbon and the like. The absorption method is a method utilizing the chemical reactivity (acid-base reaction, etc.) of the substance to be treated. Basic compounds such as ammonia and amines are washed with an acid, and acidic mercaptans are washed with an alkali. Is used effectively. Aqueous solutions of hypochlorous acid, chlorine, potassium permanganate and the like are strong oxidizing agents, and there is a method of absorbing and oxidatively decomposing using these aqueous solutions.
【０００５】また、燃焼酸化法は直接燃焼法と触媒燃焼
法に大別される。直接燃焼法は、一般に補助燃料を用い
て排ガスを加熱し、８００℃以上の温度で排ガス中の悪
臭、有害成分を燃焼し、二酸化炭素と水にする方法であ
る。触媒燃焼法は、触媒の酸化作用により５００℃また
はそれ以下の比較的低温で排ガス中の悪臭、有害成分を
燃焼するものである。[0005] The combustion oxidation method is roughly classified into a direct combustion method and a catalytic combustion method. The direct combustion method is a method in which exhaust gas is generally heated using an auxiliary fuel, and odorous and harmful components in the exhaust gas are burned at a temperature of 800 ° C. or more to produce carbon dioxide and water. The catalytic combustion method burns odorous and harmful components in exhaust gas at a relatively low temperature of 500 ° C. or lower by the oxidizing action of the catalyst.
【０００６】これらの処理方式は、排ガスの条件や経済
性を考慮して選定されるが、吸着法は排ガス中の除去成
分が微量（ppm 以下）の場合に適しており、除去成分の
量がふえるに比例して寿命も低下し、短時間での吸着剤
の再生や交換が必要となる。また、吸着剤の再生時には
吸着した除去成分が脱着され排出されるため、後流での
除去処理が必要となる。吸収法は使用する吸収液に選択
性があるため、種類の違った除去成分を含む排ガスの処
理には向いておらず、また吸収液や排水の後処理も必要
となる。[0006] These treatment methods are selected in consideration of the exhaust gas conditions and economy, but the adsorption method is suitable when the removal component in the exhaust gas is a very small amount (ppm or less). The service life is shortened in proportion to the increase, and the regeneration or replacement of the adsorbent in a short time is required. Further, at the time of regeneration of the adsorbent, the adsorbed removal component is desorbed and discharged, so that a downstream removal process is required. The absorption method is not suitable for treating exhaust gas containing different types of removal components because of the selectivity of the absorption solution used, and also requires post-treatment of the absorption solution and waste water.
【０００７】これらのことより悪臭、有害成分の除去方
法として、燃焼酸化法による処理方法が広く採用されて
おり、最近では触媒燃焼法が直接燃焼法に較べ補助燃料
の節減や２次公害の原因となるＮＯｘの生成がない等の
利点があるため、注目され、採用されるようになってき
た。図６は、従来技術における触媒燃焼方式の一例を示
すフロー図である。図６において、排ガスファン２によ
り吸引された排ガス１（排ガス１が加圧状態で導入され
る場合は、排ガスファン２は不要の場合もある）は、熱
交換器２１に入る。熱交換器２１で排ガス１は自己の燃
焼処理排ガス２０との熱交換により加熱され、予熱排ガ
ス２２となって触媒燃焼炉２３へ導かれる。この触媒燃
焼炉２３の前流には、装置起動時の予熱排ガス２２の予
熱（加熱）および熱交換器２１で必要温度まで加熱され
ない場合のバックアップ加熱のための助燃バーナ１６を
有した排ガス予熱装置２８が設けられている。For these reasons, as a method of removing bad smells and harmful components, a treatment method using a combustion oxidation method has been widely adopted. Recently, the catalytic combustion method has reduced the use of auxiliary fuel and caused secondary pollution as compared with the direct combustion method. Because of its advantages such as no generation of NOx, it has attracted attention and has been adopted. FIG. 6 is a flowchart showing an example of a catalytic combustion system in the related art. In FIG. 6, the exhaust gas 1 sucked by the exhaust gas fan 2 (when the exhaust gas 1 is introduced in a pressurized state, the exhaust gas fan 2 may be unnecessary) enters the heat exchanger 21. In the heat exchanger 21, the exhaust gas 1 is heated by heat exchange with its own combustion treatment exhaust gas 20, and is introduced as a preheated exhaust gas 22 to the catalytic combustion furnace 23. An exhaust gas preheating apparatus having an auxiliary burner 16 for preheating (heating) the preheated exhaust gas 22 at the time of starting the apparatus and for backup heating when the apparatus is not heated to a required temperature by the heat exchanger 21 is provided upstream of the catalytic combustion furnace 23. 28 are provided.
【０００８】触媒燃焼炉２３内には燃焼触媒層５が設け
られており、予熱排ガス２２は燃焼触媒層５を通過時、
触媒の酸化作用により低温で悪臭成分、有害成分を燃焼
させ、無公害な燃焼処理排ガス２０となって熱交換器２
１で排ガス１に廃熱を与え、さらにその後流で廃熱回収
装置２９で熱回収されたのち、煙突２４より排気２５と
して大気へ放出される。A combustion catalyst layer 5 is provided in the catalytic combustion furnace 23, and the preheated exhaust gas 22 passes through the combustion catalyst layer 5,
Odorous and harmful components are burned at a low temperature by the oxidizing action of the catalyst, resulting in non-polluting combustion-treated exhaust gas 20 and heat exchanger 2
At 1, waste heat is given to the exhaust gas 1, and after being recovered by the waste heat recovery device 29 in the subsequent flow, it is released from the chimney 24 to the atmosphere as exhaust 25.
【０００９】燃焼触媒層５の入口予熱温度のコントロー
ルは、燃焼触媒層５の入口の温度調節計２６により助燃
料１７の量をコントロール弁２７により調節し、助燃バ
ーナ１６の燃焼量調整により行われる。この触媒燃焼方
式の排ガス処理装置の場合、燃焼触媒層５の入口部で予
熱排ガス２２中の成分に応じた燃焼触媒層５の着火温度
まで前記予熱排ガス２２を予熱する必要があり、そこで
初めて燃焼触媒層５は活性化され触媒燃焼を開始する。
この予熱排ガス２２の予熱温度は大略１５０〜４００℃
程度であり、この予熱排ガス２２の予熱を熱交換器２１
と排ガス予熱装置２８が受け持つ。排ガス予熱装置２８
の助燃バーナ１６は、助燃料１７と燃焼空気ファン１８
により空気１９を供給し、気相燃焼により火炎を形成し
て予熱排ガス２２を予熱する。助燃料１７としてはＬＰ
Ｇ、天然ガス、都市ガス、軽油、灯油などの良質油が使
用される。The control of the preheating temperature at the inlet of the combustion catalyst layer 5 is performed by adjusting the amount of the auxiliary fuel 17 by the control valve 27 by the temperature controller 26 at the inlet of the combustion catalyst layer 5 and adjusting the combustion amount of the auxiliary burner 16. . In the case of this catalytic combustion type exhaust gas treatment apparatus, it is necessary to preheat the preheated exhaust gas 22 at the inlet of the combustion catalyst layer 5 to the ignition temperature of the combustion catalyst layer 5 according to the components in the preheated exhaust gas 22, and the combustion is performed there for the first time. The catalyst layer 5 is activated and starts catalytic combustion.
The preheating temperature of the preheating exhaust gas 22 is approximately 150 to 400 ° C.
The preheating of the preheated exhaust gas 22 is performed by the heat exchanger 21.
And the exhaust gas preheating device 28. Exhaust gas preheating device 28
The auxiliary burner 16 is composed of an auxiliary fuel 17 and a combustion air fan 18.
To supply air 19 and form a flame by gas phase combustion to preheat the preheated exhaust gas 22. LP as auxiliary fuel 17
Good-quality oils such as G, natural gas, city gas, light oil, and kerosene are used.
【００１０】この触媒燃焼方式は、直接燃焼法に較べ助
燃料１７の低減が可能であるが、除去成分の着火温度以
上に、燃焼触媒層５を通過する全排ガスを加熱する必要
があり、大容量の排ガスの場合、運転費用にかかる助燃
料１７の負担は小さいといえない。このため熱交換器２
１を設置し、排ガスの燃焼熱により燃焼触媒層５の入口
側の予熱排ガス２２を加熱することで運転中の助燃料１
７の消費量を低減する等の対応がとられている。しか
し、この熱交換器２１も排ガス中の除去成分の割合が比
較的多く、燃焼による温度上昇が１００℃以上見込める
場合には充分な効果が発揮されるが、悪臭、有害成分に
はアンモニア、アミン類、アルデヒド類、チオール類等
のように微量（ppm 以下）含まれるだけで強い臭気を示
すものもある。従ってこれらを微量含む予熱排ガス２２
の場合には、燃焼による温度上昇もほとんど期待できな
いため、熱交換器２１による排ガス加熱の効果は小さ
い。This catalytic combustion method can reduce the auxiliary fuel 17 as compared with the direct combustion method. However, it is necessary to heat all exhaust gas passing through the combustion catalyst layer 5 to a temperature higher than the ignition temperature of the removed component. In the case of exhaust gas of a capacity, the burden of the auxiliary fuel 17 on the operating cost is not small. Therefore, heat exchanger 2
1 is installed, and the preheated exhaust gas 22 on the inlet side of the combustion catalyst layer 5 is heated by the combustion heat of the exhaust gas.
7 is reduced. However, this heat exchanger 21 also has a relatively high proportion of the removed components in the exhaust gas, and when the temperature rise due to combustion can be expected to be 100 ° C. or more, a sufficient effect is exhibited. Some odors, such as aldehydes, aldehydes, and thiols, have a strong odor when contained only in trace amounts (ppm or less). Therefore, the preheated exhaust gas 22 containing a trace amount thereof
In the case of (1), since the temperature rise due to combustion can hardly be expected, the effect of the exhaust gas heating by the heat exchanger 21 is small.
【００１１】この悪臭、有害成分を微量含む予熱排ガス
２２を、助燃料１７の消費量を低減し、かつ効率よく処
理する方法としてアンモニア、アミン類、アルデヒド
類、チオール類等の悪臭、有害成分を含有する排ガスの
流通する煙道や配管内に、前段に耐熱性の無機質吸着剤
を、後段に燃焼用触媒層を配置し、前段の吸着剤に悪
臭、有害成分を吸着させて濃縮した後、該吸着剤を加熱
して悪臭、有害成分を脱着させ、濃度の高い有害成分と
して後段の燃焼触媒層で除去する方法であり、有害成分
を吸着した吸着剤を後段の燃焼触媒層の熱を利用して再
生加熱するため、経済性に優れ、また吸着剤と熱交換器
とを一体化することにより装置のコンパクト化を図った
ものである。As a method for efficiently treating the preheated exhaust gas 22 containing a small amount of the malodorous and harmful components while reducing the consumption of the auxiliary fuel 17, the malodorous and harmful components such as ammonia, amines, aldehydes and thiols are removed. After placing the heat-resistant inorganic adsorbent in the former stage and the combustion catalyst layer in the latter stage in the flue or pipe through which the exhaust gas containing it flows, and adsorbing odors and harmful components to the adsorbent in the former stage and concentrating it, A method in which the adsorbent is heated to deodorize odors and harmful components, and is removed as a high-concentration harmful component in the latter combustion catalyst layer. In this case, the heat is regenerated and heated, so that it is economical, and the apparatus is made compact by integrating the adsorbent and the heat exchanger.
【００１２】耐熱性の無機質吸着剤としてはアルミナ、
シリカ、シリカ−アルミナ、マグネシア他、各種の粘土
鉱物およびゼオライト等があげられ、比表面積が大きく
吸着容量の大きなものが使用される。また、燃焼触媒と
してはアルミナに白金やパラジウム等の貴金属、および
／またはマンガン、鉄、コバルト、銅などの卑金属を担
持したものが用いられる。Alumina is used as the heat-resistant inorganic adsorbent.
Examples thereof include silica, silica-alumina, magnesia, various clay minerals, and zeolites, and those having a large specific surface area and a large adsorption capacity are used. As the combustion catalyst, a catalyst in which a noble metal such as platinum or palladium and / or a base metal such as manganese, iron, cobalt, or copper is supported on alumina is used.
【００１３】図７は吸着法と触媒燃焼法とを組合わせた
従来方式の脱臭装置の一例を示すフロー図である。脱臭
装置は、熱交換器２１と一体化させた耐熱性の無機質吸
着剤層４、排ガス予熱装置２８および燃焼触媒層５から
主としてなる。悪臭、有害成分を含有した排ガス１は、
排ガスファン２を経て吸着剤層４に導入される。無機質
吸着剤層４が飽和吸着状態に達する直前に、助燃バーナ
１６を有する排ガス予熱装置２８を起動し、燃焼触媒層
５を加熱して燃焼触媒層５が活性化し作用する温度にま
で昇温される。燃焼触媒層５の廃熱は、熱交換器２１を
介して吸着剤層４に伝えられる。吸着剤層４の温度上昇
により、該吸着剤層４から脱着した悪臭物質は燃焼触媒
層５に導かれここで燃焼除去される。上記吸着剤層４
は、熱交換器２１と一体化したものである。FIG. 7 is a flow chart showing an example of a conventional deodorizing apparatus in which the adsorption method and the catalytic combustion method are combined. The deodorizing device mainly includes the heat-resistant inorganic adsorbent layer 4 integrated with the heat exchanger 21, the exhaust gas preheating device 28, and the combustion catalyst layer 5. Exhaust gas 1 containing stench and harmful components
The exhaust gas is introduced into the adsorbent layer 4 through the exhaust gas fan 2. Immediately before the inorganic adsorbent layer 4 reaches the saturated adsorption state, the exhaust gas preheating device 28 having the auxiliary burner 16 is started, and the combustion catalyst layer 5 is heated to a temperature at which the combustion catalyst layer 5 is activated and acts. You. The waste heat of the combustion catalyst layer 5 is transmitted to the adsorbent layer 4 via the heat exchanger 21. Due to the rise in the temperature of the adsorbent layer 4, the malodorous substances desorbed from the adsorbent layer 4 are led to the combustion catalyst layer 5, where they are burned and removed. Absorbent layer 4
Is integrated with the heat exchanger 21.
【００１４】排ガス予熱装置２８は常時起動せず、耐熱
性の無機質吸着剤層４に排ガス１を通すことで、排ガス
１中の悪臭、有害成分が吸着除去され、排気２５は、熱
交換器２１を通って煙突２４から排気される。耐熱性の
無機質吸着剤層４の加熱、脱着処理は上記吸着剤層４が
飽和吸着状態に近づいたときにのみ、排ガス予熱装置２
８の起動を行うものである。The exhaust gas preheating device 28 is not activated at all times, and the exhaust gas 1 is passed through the heat-resistant inorganic adsorbent layer 4 so that the odor and harmful components in the exhaust gas 1 are adsorbed and removed. Through the chimney 24. The heating and desorption treatment of the heat-resistant inorganic adsorbent layer 4 is performed only when the adsorbent layer 4 approaches a saturated adsorption state.
8 is started.
【００１５】[0015]
【発明が解決しようとする課題】上記図７の従来技術
は、前段の耐熱性の無機質吸着剤層４と、後段の燃焼触
媒層５の組合わせにより、脱着操作時のみ助燃料１７を
使用するため、図６の従来技術に比べて大幅に助燃料の
消費量を低減可能とした。しかし、吸着剤層４の脱着操
作時にも悪臭、有害成分を含む排ガス１を上記吸着剤層
に供給しているため、後段の燃焼触媒層５は図６に示し
た触媒燃焼方式の場合の触媒量と同量必要であり、触媒
量の低減にはつながらなかった。また、排ガス中の悪臭
・有害成分含有割合の変動により、上記吸着剤層の飽和
状態に達するまでの時間が変わるため、吸着剤層の加熱
による脱着処理の時期の判断が難しい問題があった。In the prior art shown in FIG. 7, the auxiliary fuel 17 is used only during the desorption operation by combining the heat-resistant inorganic adsorbent layer 4 in the first stage and the combustion catalyst layer 5 in the second stage. Therefore, it is possible to greatly reduce the consumption amount of the auxiliary fuel as compared with the prior art of FIG. However, since the exhaust gas 1 containing odor and harmful components is supplied to the adsorbent layer even during the desorbing operation of the adsorbent layer 4, the combustion catalyst layer 5 in the latter stage is a catalyst for the catalytic combustion system shown in FIG. The amount required was the same as the amount, and did not lead to a reduction in the amount of catalyst. In addition, the time required for the adsorbent layer to reach a saturated state changes due to a change in the content ratio of offensive odors and harmful components in the exhaust gas, so that it is difficult to determine the timing of the desorption treatment by heating the adsorbent layer.
【００１６】さらに、脱着操作時に上記吸着剤層４を加
熱するための排ガス予熱装置として、複雑な制御装置を
有した助燃料の燃焼システムと大きな設置スペースを占
める燃焼室が必要であった。また、加熱脱着した無機質
吸着剤層が吸着可能な温度に冷却されるまでの間、排ガ
ス予熱装置２８を稼働させる必要があり、この間処理さ
れたガスは図示省略したバイパス路より煙突２４に排出
するなどの操作が必要であった。Further, as an exhaust gas preheating device for heating the adsorbent layer 4 during the desorption operation, an auxiliary fuel combustion system having a complicated control device and a combustion chamber occupying a large installation space were required. Further, it is necessary to operate the exhaust gas preheating device 28 until the heated and desorbed inorganic adsorbent layer is cooled to a temperature at which it can be adsorbed, and the gas treated during this time is discharged to the chimney 24 from a bypass not shown. Such operations were required.
【００１７】本発明の目的は、上記従来技術における問
題点を解消し、排ガス中の悪臭、有害成分の吸着と、飽
和吸着状態に近づいた吸着剤の脱着再生処理とを同時に
連続して行うことができ、かつ脱着した濃度の高い小容
量の悪臭、有害成分を少ない燃焼触媒層で有効に燃焼除
去することができ、また吸着剤層の加熱脱着のために助
燃料を使用せずに、悪臭、有害成分のリークがなく、吸
着、脱着触媒燃焼を同時に連続して行える排ガス中の有
害成分の除去方法およびコンパクトな構造の安価で維持
費の安い有害成分の除去装置を提供することにある。An object of the present invention is to solve the above-mentioned problems in the prior art, and to simultaneously and continuously perform the adsorption of odors and harmful components in exhaust gas and the desorption / regeneration treatment of an adsorbent approaching a saturated adsorption state. Odors and odors with high concentration and desorbed capacity can be effectively burned and removed with a small amount of the combustion catalyst layer, and no odor can be obtained without using auxiliary fuel for heating and desorbing the adsorbent layer. It is another object of the present invention to provide a method for removing harmful components in exhaust gas, which can continuously perform adsorption and desorption catalytic combustion without leaking harmful components, and a device for removing harmful components which is inexpensive and has a low maintenance cost with a compact structure.
【００１８】[0018]
【課題を解決するための手段】上記目的を達成するため
本願で特許請求される発明は以下のとおりである。 （１）排ガス中に含まれる悪臭、または有害成分を吸着
剤層により吸着し、該吸着した悪臭または有害成分を前
記吸着剤層から脱着し、脱着した悪臭または有害成分を
触媒燃焼によって燃焼除去する排ガス処理方法におい
て、前記排ガスの流れを複数個に分割し、分割した各排
ガスの流れに沿ってその前流側に吸着剤層、後流側に燃
焼触媒層を連通した状態（吸着−燃焼触媒層で配置し、
前記複数個に分割した排ガス流れ内の各吸着剤層をそれ
ぞれ通電により加熱することにより、悪臭または有害成
分の吸着、脱着、触媒燃焼の各工程を前記分割した排ガ
ス流れ内の吸着−燃焼触媒層ごとに行い、全体の吸着−
燃焼触媒層で、排ガスに含まれる悪臭または有害成分の
吸着、脱着、触媒燃焼の各工程を連続的に行うことを特
徴とする排ガス処理方法。The invention claimed in the present application to achieve the above object is as follows. (1) The odor or harmful component contained in the exhaust gas is adsorbed by the adsorbent layer, the adsorbed odor or harmful component is desorbed from the adsorbent layer, and the desorbed odor or harmful component is burnt and removed by catalytic combustion. In the exhaust gas treatment method, the flow of the exhaust gas is divided into a plurality of parts, and an adsorbent layer is communicated on the upstream side and a combustion catalyst layer is communicated on the downstream side along the divided exhaust gas flows (adsorption-combustion catalyst). Arranged in layers,
Each of the adsorbent layers in the exhaust gas stream divided into a plurality of parts is heated by energization, thereby adsorbing and desorbing odorous or harmful components, and performing each step of catalytic combustion in the divided exhaust gas stream. Every time, the whole adsorption-
An exhaust gas treatment method, wherein each step of adsorption, desorption, and catalytic combustion of an odorous or harmful component contained in exhaust gas is continuously performed in a combustion catalyst layer.
【００１９】（２）排ガス中に含まれる悪臭または有害
成分を吸着する吸着剤層と、吸着された悪臭または有害
成分を吸着剤層より加熱脱着する手段と、脱着された有
害成分を燃焼除去する手段とを設けた排ガス処理装置に
おいて、前記排ガスの流れ方向に沿ってその前流側に悪
臭または有害成分を吸着する耐熱性吸着剤層、後流側に
前記吸着剤層から脱着された有害成分を燃焼除去する燃
焼触媒層を配置して吸着−燃焼触媒層を形成し、かつ該
吸着−燃焼触媒層を排ガス流れに直角な断面上２つ以上
複数に分割し、分割した吸着−燃焼触媒層の吸着剤層ご
とに通電により発熱する加熱手段を設けたことを特徴と
する排ガス処理装置。(2) An adsorbent layer for adsorbing odorous or harmful components contained in exhaust gas, means for heating and desorbing the adsorbed odor or harmful components from the adsorbent layer, and burning and removing the desorbed harmful components. And a heat-resistant adsorbent layer for adsorbing offensive odors or harmful components on the upstream side along the flow direction of the exhaust gas, and the harmful components desorbed from the adsorbent layer on the downstream side. A combustion catalyst layer for burning and removing the catalyst is disposed to form an adsorption-combustion catalyst layer, and the adsorption-combustion catalyst layer is divided into two or more sections on a section perpendicular to the exhaust gas flow, and the divided adsorption-combustion catalyst layer is divided. An exhaust gas treatment apparatus, wherein a heating means for generating heat by energization is provided for each of the adsorbent layers.
【００２０】（３）（２）において、複数に分割した各
吸着−燃焼触媒層の間に絶縁性の断熱材よりなる仕切り
を設けたことを特徴とする排ガス処理装置。 （４）（２）において、複数に分割した吸着−燃焼触媒
層ごとに吸着剤層を順次通電加熱する手段を設けたこと
を特徴とする排ガス処理装置。 （５）（２）の排ガス処理装置において、分割した吸着
−燃焼触媒層の燃焼触媒層にも通電により発熱するヒー
タ機能を内装したことを特徴とする排ガス処理装置。(3) An exhaust gas treatment apparatus according to (2), wherein a partition made of an insulating heat insulating material is provided between each of the plurality of divided adsorption-combustion catalyst layers. (4) An exhaust gas treatment apparatus according to (2), further comprising means for sequentially energizing and heating the adsorbent layer for each of the plurality of divided adsorption-combustion catalyst layers. (5) The exhaust gas treatment device according to (2), further including a heater function for generating heat when energized also in the combustion catalyst layer of the divided adsorption-combustion catalyst layer.
【００２１】（６）（５）において、吸着剤層と燃焼触
媒層を積層し、通電により発熱するヒータ機能を一体化
したことを特徴とする排ガス処理装置。 （７）排ガス中に含まれる悪臭または有害成分を排ガス
流路上流に設けた吸着剤手段により吸着し、吸着した有
害成分を該吸着剤手段から脱着し、脱着した有害成分を
前記吸着剤手段の後流に設けた燃焼触媒手段により燃焼
除去する排ガス処理方法において、前記吸着剤手段と前
記燃焼触媒手段を連通状態とした吸着−燃焼触媒手段を
排ガス流れに直角方向断面上に２以上複数に分割して配
置し、分割された各吸着−燃焼触媒手段に排ガスをそれ
ぞれ分流させるとともに、分割された前記吸着剤手段を
所定の時間ずらせて通電加熱手段により加熱して有害ガ
スを脱着し、通電加熱中の吸着剤手段に流入する排ガス
流量を非加熱時よりも減少させ、その減少分を他の非加
熱吸着剤手段に流入させ、前記脱着した有害ガスを排ガ
スとともに下流の燃焼触媒手段に供給して燃焼すること
を特徴とする排ガス処理方法。(6) An exhaust gas treatment apparatus according to (5), wherein an adsorbent layer and a combustion catalyst layer are laminated, and a heater function for generating heat when energized is integrated. (7) An odorous or harmful component contained in the exhaust gas is adsorbed by an adsorbent means provided upstream of the exhaust gas channel, the adsorbed harmful component is desorbed from the adsorbent means, and the desorbed harmful component is removed by the adsorbent means. In the exhaust gas treatment method for burning and removing by the combustion catalyst means provided in the downstream, the adsorption-combustion catalyst means in which the adsorbent means and the combustion catalyst means are in communication with each other is divided into two or more plural sections on a cross section perpendicular to the exhaust gas flow. The exhaust gas is separately diverted to each of the divided adsorption-combustion catalyst means, and the divided adsorbent means is shifted by a predetermined time and heated by an electric heating means to desorb harmful gases, and the electric heating is performed. The flow rate of the exhaust gas flowing into the adsorbent means inside is reduced from that at the time of non-heating, and the reduced amount is flown into other non-heating adsorbent means, and the desorbed harmful gas is discharged together with the exhaust gas in the downstream. Exhaust gas treatment method characterized in that burning is supplied to burn the catalyst means.
【００２２】（８）（７）において、連通状態とした吸
着−燃焼触媒手段の吸着剤手段加熱時に燃焼触媒手段を
加熱するようにしたことを特徴とする排ガス処理方法。(8) The exhaust gas treatment method according to (7), wherein the combustion catalyst means is heated when the adsorbent means of the adsorption-combustion catalyst means in the communicating state is heated.
【００２３】[0023]
【発明の実施の形態】図１および図２は、本発明の一実
施例である排ガス処理装置の構造を示す説明図であり、
図２は図１のII−II線矢視方向視図であり、耐熱性の無
機質吸着剤層４と燃焼触媒層５を上部から見た図であ
る。図において、排ガスファン２により吸引された排ガ
ス１（排ガス１が必要加圧状態で導入される場合は排ガ
スファン２は不要となることもある）は、耐熱性無機質
吸着剤層４と燃焼触媒層５を内装する反応容器３の排ガ
ス流路１２に導入される。吸着剤層４と燃焼触媒層５を
内装する反応容器３には前段に耐熱性の無機質吸着剤層
４、後段に燃焼触媒層５が配置されており、耐熱性の無
機質吸着剤層４と燃焼触媒層５は連通されており、平面
上複数に分割されている（図１では６分割の例を示
す）。また、分割された耐熱性の無機質吸着剤層４の各
々は絶縁性断熱材６により仕切られており、端部にはそ
れぞれ電極１０が取付けられており、電源ケーブル１１
がつながっている。1 and 2 are explanatory views showing the structure of an exhaust gas treatment apparatus according to one embodiment of the present invention.
FIG. 2 is a view in the direction of arrows II-II in FIG. 1, and is a view in which the heat-resistant inorganic adsorbent layer 4 and the combustion catalyst layer 5 are viewed from above. In the figure, exhaust gas 1 sucked by an exhaust gas fan 2 (if the exhaust gas 1 is introduced in a required pressurized state, the exhaust gas fan 2 is sometimes unnecessary) is composed of a heat-resistant inorganic adsorbent layer 4 and a combustion catalyst layer. 5 is introduced into the exhaust gas channel 12 of the reaction vessel 3 in which the inside 5 is housed. The reaction vessel 3 containing the adsorbent layer 4 and the combustion catalyst layer 5 is provided with a heat-resistant inorganic adsorbent layer 4 at the front stage and a combustion catalyst layer 5 at the rear stage. The catalyst layer 5 is communicated and divided into a plurality of parts on a plane (FIG. 1 shows an example of six divisions). Further, each of the divided heat-resistant inorganic adsorbent layers 4 is separated by an insulating heat insulating material 6, and electrodes 10 are attached to ends thereof, respectively.
Are connected.
【００２４】吸着剤層４と燃焼触媒層５を内装する反応
容器３に導入された排ガス１は、上記吸着剤層４を通過
する際に、排ガス１中の悪臭、有害成分が吸着される。
耐熱性の無機質吸着剤層４を通過して浄化された排ガス
１は燃焼触媒層５を通って処理排ガス流路１３から処理
排ガス７として系外へ排出される。一方、分割された耐
熱性の無機質吸着剤層４の１個所は、電源装置８から通
電コントロールユニット９を通って電極１０から電気が
供給されており、通電された耐熱性の無機質吸着剤層４
は発熱して加熱され、上記吸着剤層４を通過する排ガス
１は加熱される。加熱された上記吸着剤層４は、通過す
る排ガス１により吸着されている悪臭、有害成分を脱離
放出し、高濃度の悪臭、有害成分を含有した加熱された
排ガス１として、後段の燃焼触媒層５へ導入される。前
記排ガス１は燃焼触媒層５を通過する時に、触媒の酸化
作用により比較的低温で悪臭、有害成分が燃焼され、処
理排ガス流路１３で、吸着により浄化された処理排ガス
７と一緒に処理排ガス７として系外へ排出される。When the exhaust gas 1 introduced into the reaction vessel 3 containing the adsorbent layer 4 and the combustion catalyst layer 5 passes through the adsorbent layer 4, the odor and harmful components in the exhaust gas 1 are adsorbed.
The exhaust gas 1 purified by passing through the heat-resistant inorganic adsorbent layer 4 passes through the combustion catalyst layer 5 and is discharged out of the system as the treated exhaust gas 7 from the treated exhaust gas channel 13. On the other hand, one portion of the divided heat-resistant inorganic adsorbent layer 4 is supplied with electricity from the electrode 10 through the power supply control unit 9 from the power supply device 8 and is supplied with electricity.
Is heated and heated, and the exhaust gas 1 passing through the adsorbent layer 4 is heated. The heated adsorbent layer 4 desorbs and releases odors and harmful components adsorbed by the passing exhaust gas 1, and as a heated exhaust gas 1 containing a high concentration of odors and harmful components, as a combustion catalyst in the subsequent stage. Introduced into layer 5. When the exhaust gas 1 passes through the combustion catalyst layer 5, the odor and harmful components are burned at a relatively low temperature by the oxidizing action of the catalyst. It is discharged out of the system as 7.
【００２５】通電されて加熱脱離完了した耐熱性の無機
質吸着剤層４は、通電コントロールユニット９により自
動的に電源が切られ、次の分割区域にある耐熱性の無機
質吸着剤層４へ電源が切り替えられ、通電された耐熱性
の無機質吸着剤層４が発熱し、加熱脱離操作に入る。こ
うして順次通電コントロールユニット９によって自動的
に電源が切り替えられ、加熱脱離操作が繰返される。The power of the heat-resistant inorganic adsorbent layer 4 that has been heated and desorbed by being energized is automatically turned off by the power supply control unit 9, and the power is supplied to the heat-resistant inorganic adsorbent layer 4 in the next divided area. Is switched, the energized heat-resistant inorganic adsorbent layer 4 generates heat, and enters a heating desorption operation. In this way, the power supply is automatically switched by the energization control unit 9 in sequence, and the heating / desorption operation is repeated.
【００２６】加熱脱離が完了して電源が切られた耐熱性
の無機質吸着剤層４は、冷却されて再び排ガス１中の悪
臭、有害成分を吸着する。図３は耐熱性の無機質吸着剤
層４の断面を部分的に拡大した模式図である。図３にお
いて、耐熱性の無機質吸着剤層４はクロムやアルミニウ
ムの合金またはステンレス材を使用した導電性メタル基
材１５の表面に、シリカ、アルミナ、ゼオライト、粘土
鉱物などの無機質吸着剤１４をコートしたもので、導電
性メタル基材１５が発熱し、ヒータ機能を発揮するもの
である。The heat-resistant inorganic adsorbent layer 4 whose power has been turned off after the completion of the thermal desorption is cooled and adsorbs odorous and harmful components in the exhaust gas 1 again. FIG. 3 is a partially enlarged schematic view of the heat-resistant inorganic adsorbent layer 4. In FIG. 3, a heat-resistant inorganic adsorbent layer 4 is formed by coating an inorganic adsorbent 14 such as silica, alumina, zeolite, or clay mineral on a surface of a conductive metal base material 15 using an alloy of chromium or aluminum or a stainless steel material. The conductive metal base material 15 generates heat and exhibits a heater function.
【００２７】図４は、本発明の他の実施例を示す排ガス
処理装置の構造を示す説明図である。図４において、各
部の構成、動作は図１および２と同じであるが、燃焼触
媒層５に電極１０を設け、分割された耐熱性の無機質吸
着剤層４の１個所が、電源装置８から通電コントロール
ユニット９を通って電極１０から電源が供給されて加熱
再生する際に、対応する燃焼触媒層５を同時に加熱して
排ガス１の加熱燃焼をタイムロスなく助けるものであ
る。FIG. 4 is an explanatory view showing the structure of an exhaust gas treatment apparatus according to another embodiment of the present invention. 4, the configuration and operation of each part are the same as in FIGS. 1 and 2, except that an electrode 10 is provided on the combustion catalyst layer 5 and one portion of the divided heat-resistant inorganic adsorbent layer 4 is When power is supplied from the electrode 10 through the power supply control unit 9 and heating and regeneration are performed, the corresponding combustion catalyst layers 5 are simultaneously heated to assist the heating and combustion of the exhaust gas 1 without time loss.
【００２８】図５は、本発明の別の実施例を示す排ガス
処理装置の構造を示す説明図である。図５において、各
部の構成、動作は図１および２と同じであるが、耐熱性
の無機質吸着剤層４と燃焼触媒層５を積層し、ヒータ機
能を一体化したものである。これによりヒータ機能の電
極の数を削減できる。FIG. 5 is an explanatory view showing the structure of an exhaust gas treating apparatus according to another embodiment of the present invention. In FIG. 5, the configuration and operation of each part are the same as those in FIGS. 1 and 2, except that a heat-resistant inorganic adsorbent layer 4 and a combustion catalyst layer 5 are laminated to integrate a heater function. This can reduce the number of electrodes for the heater function.
【００２９】本実施例によれば、吸着−燃焼触媒層を平
面上で複数に分割し、分割した吸着剤層に各々単独で自
己発熱できるヒータ機能を設けたことにより、排ガス中
の悪臭、有害成分の吸着除去と、吸着剤の吸着再生処理
とを同時に連続して行うことができる。また、脱着用に
排ガスの一部を使用するため、別な空気源が必要なく、
さらに脱離操作に助燃料が必要ないため排ガス予熱装置
も必要なくなる。According to this embodiment, the adsorption-combustion catalyst layer is divided into a plurality of parts on a plane, and the divided adsorbent layers are each provided with a heater function capable of generating heat independently, whereby the odor and harmfulness in the exhaust gas are reduced. The adsorption removal of the components and the adsorption regeneration treatment of the adsorbent can be simultaneously and continuously performed. Also, because a part of the exhaust gas is used for desorption, no separate air source is required,
Further, since no auxiliary fuel is required for the desorption operation, an exhaust gas preheating device is not required.
【００３０】本実施例では図７に示した従来技術に比ら
べ、吸着剤層４に使用する吸着剤量を大幅に減らすこと
ができる。図７の従来技術においては、例えば吸着剤層
４が有害ガスを吸着し飽和するまでの吸着作動時間を数
日間〜数週間とした場合、その脱着再生時間は数時間〜
十数時間程度になると考えられ、排ガス吸着稼働時間を
長くとるためには多量の吸着剤を装着する必要がある。
一方、図１および２の本願発明においては、吸着剤層４
の分割された一部区画のみを順次脱着再生して再稼働さ
せているので、吸着し飽和するまでの吸着作動時間を１
日〜数時間程度に設定可能であり、吸着剤使用量も上記
時間に対応する量であればよく、吸着剤使用量を従来技
術に比べて大幅に減らすことができる。In this embodiment, the amount of adsorbent used in the adsorbent layer 4 can be greatly reduced as compared with the prior art shown in FIG. In the prior art shown in FIG. 7, for example, when the adsorption operation time until the adsorbent layer 4 adsorbs harmful gas and becomes saturated is several days to several weeks, the desorption regeneration time is several hours to
It is considered to be about ten and several hours, and it is necessary to mount a large amount of adsorbent in order to increase the operating time of exhaust gas adsorption.
On the other hand, in the present invention of FIGS.
Since only some of the divided sections are sequentially desorbed and regenerated and restarted, the adsorption operation time from adsorption to saturation is reduced to 1
It can be set to about a day to several hours, and the amount of adsorbent used may be an amount corresponding to the above-mentioned time, and the amount of adsorbent used can be greatly reduced as compared with the conventional technology.
【００３１】また、本実施例では図７に示した従来技術
に比べ、燃焼触媒量を大幅に減らすことができる（約１
／２程度）。燃焼触媒層５に装着する触媒量は、そこを
通過する排ガス量によって決まる。本発明においては、
吸着剤層４の加熱脱着は分割された小区画の吸着剤層に
対して行われており、その際にはその脱着操作を行って
いる分割区画については排ガスの通過抵抗は２倍以上に
上昇する。このため脱着操作部の排ガス通過量は減り、
この減少分は他の吸着稼働中の吸着部に流れることにな
る。したがって、脱着操作を行っている吸着部に連通す
る燃焼触媒層には、吸着作動時の１／２程度の排ガス流
量しか流れないことになる。なお、吸着剤層から脱離す
る有害・悪臭ガスの量は排ガス量に較べれば微々たる量
である。以上述べたことより脱着された有害ガスを燃焼
させるための燃焼触媒量は、従来技術に比較して大幅に
減少させることができる。Further, in this embodiment, the amount of the combustion catalyst can be significantly reduced (about 1) as compared with the prior art shown in FIG.
/ 2). The amount of catalyst mounted on the combustion catalyst layer 5 is determined by the amount of exhaust gas passing therethrough. In the present invention,
The thermal desorption of the adsorbent layer 4 is performed on the adsorbent layer of the divided small sections, and in this case, the passage resistance of the exhaust gas in the divided section in which the desorption operation is performed is more than doubled. I do. This reduces the amount of exhaust gas passing through the desorption operation section,
This decrease will flow to the other suction section during suction operation. Therefore, only about half of the exhaust gas flow rate during the adsorption operation flows through the combustion catalyst layer communicating with the adsorption section that is performing the desorption operation. In addition, the amount of the harmful and odorous gas desorbed from the adsorbent layer is insignificant compared with the amount of the exhaust gas. As described above, the amount of the combustion catalyst for burning the desorbed harmful gas can be greatly reduced as compared with the related art.
【００３２】[0032]
【発明の効果】本発明によれば、有害ガスを吸着し脱着
する吸着剤部を複数区域に分割し、分割区域ごとに順次
脱着再生を行っているので、装置全体では連続して有害
ガス除去作動を行うことができる。また、用いる吸着剤
および燃焼触媒量を大幅に減らすことができるととも
に、装置のコンパクト化、使用エネルギーの節減ができ
る。According to the present invention, the adsorbent section for adsorbing and desorbing harmful gas is divided into a plurality of sections, and desorption and regeneration are sequentially performed for each of the divided sections. Actuation can take place. In addition, the amount of the adsorbent and the combustion catalyst to be used can be greatly reduced, and the apparatus can be made compact and energy consumption can be reduced.
【図１】本発明の一実施例である排ガス処理装置の構造
を示す説明図。FIG. 1 is an explanatory view showing the structure of an exhaust gas treatment apparatus according to one embodiment of the present invention.
【図２】図１のII−II線矢視方向視図。FIG. 2 is a view as viewed in the direction of arrows II-II in FIG.
【図３】耐熱性の無機質吸着剤層の断面を部分的に拡大
した模式図。FIG. 3 is a schematic diagram in which a cross section of a heat-resistant inorganic adsorbent layer is partially enlarged.
【図４】本発明の他の実施例を示す排ガス処理装置の構
造を示す説明図。FIG. 4 is an explanatory view showing the structure of an exhaust gas treatment apparatus according to another embodiment of the present invention.
【図５】本発明の別の実施例を示す排ガス処理装置の構
造を示す説明図。FIG. 5 is an explanatory view showing the structure of an exhaust gas treatment apparatus according to another embodiment of the present invention.
【図６】従来技術における触媒燃焼方式の一例を示すフ
ロー図。FIG. 6 is a flowchart showing an example of a catalytic combustion system in the related art.
【図７】従来技術による吸着法と触媒燃焼法とを組合わ
せた方式の脱臭装置の一例を示す図。FIG. 7 is a view showing an example of a deodorizing apparatus of a system in which a conventional adsorption method and a catalytic combustion method are combined.
１…排ガス、２…排ガスファン、３…反応容器、４…耐
熱性無機質吸着剤層、５…燃焼触媒層、６…絶縁性断絶
材、７…処理排ガス、８…電源装置、９…通電コントロ
ールユニット、１０…電極、１１…電源ケーブル、１２
…排ガス流路、１３…処理排ガス流路、１４…無機質吸
着剤、１５…導電性メタル基材、１６…助燃バーナ、１
７…助燃料、１８…燃焼空気ファン、１９…空気、２０
…燃焼処理排ガス、２１…熱交換器、２２…予熱排ガ
ス、２３…触媒燃焼炉、２４…煙突、２５…排気、２６
…温度調節計、２７…コントロール弁、２８…排ガス予
熱装置、２９…廃熱回収装置、３０…バイパス路。DESCRIPTION OF SYMBOLS 1 ... Exhaust gas, 2 ... Exhaust gas fan, 3 ... Reaction vessel, 4 ... Heat-resistant inorganic adsorbent layer, 5 ... Combustion catalyst layer, 6 ... Insulating insulating material, 7 ... Treatment exhaust gas, 8 ... Power supply device, 9 ... Electrification control Unit, 10 ... electrode, 11 ... power cable, 12
... Exhaust gas channel, 13 ... Treatment exhaust gas channel, 14 ... Inorganic adsorbent, 15 ... Conductive metal base material, 16 ... Combustion burner, 1
7 ... Auxiliary fuel, 18 ... Combustion air fan, 19 ... Air, 20
... combustion treatment exhaust gas, 21 ... heat exchanger, 22 ... preheating exhaust gas, 23 ... catalytic combustion furnace, 24 ... chimney, 25 ... exhaust gas, 26
... temperature controller, 27 ... control valve, 28 ... exhaust gas preheating device, 29 ... waste heat recovery device, 30 ... bypass path.
Claims (8)
分を吸着剤層により吸着し、該吸着した悪臭または有害
成分を前記吸着剤層から脱着し、脱着した悪臭または有
害成分を触媒燃焼によって燃焼除去する排ガス処理方法
において、前記排ガスの流れを複数個に分割し、分割し
た各排ガスの流れに沿ってその前流側に吸着剤層、後流
側に燃焼触媒層を連通した状態（吸着−燃焼触媒層で配
置し、前記複数個に分割した排ガス流れ内の各吸着剤層
をそれぞれ通電により加熱することにより、悪臭または
有害成分の吸着、脱着、触媒燃焼の各工程を前記分割し
た排ガス流れ内の吸着−燃焼触媒層ごとに行い、全体の
吸着−燃焼触媒層で、排ガスに含まれる悪臭または有害
成分の吸着、脱着、触媒燃焼の各工程を連続的に行うこ
とを特徴とする排ガス処理方法。1. An odor or harmful component contained in exhaust gas is adsorbed by an adsorbent layer, the adsorbed odor or harmful component is desorbed from the adsorbent layer, and the deodorized odor or harmful component is burned by catalytic combustion. In the method for treating exhaust gas to be removed, the flow of the exhaust gas is divided into a plurality of parts, and an adsorbent layer is communicated on the upstream side and a combustion catalyst layer is communicated on the downstream side (adsorption- Each of the adsorbent layers in the exhaust gas stream divided into the plurality of divided exhaust gas streams is heated by energization, so that each of the steps of adsorption, desorption, and catalytic combustion of the odor or harmful component is divided into the exhaust gas streams. The exhaust gas is characterized by performing each process of adsorption, desorption, and catalytic combustion of odors or harmful components contained in exhaust gas continuously in the entire adsorption-combustion catalyst layer. Processing method.
を吸着する吸着剤層と、吸着された悪臭または有害成分
を吸着剤層より加熱脱着する手段と、脱着された有害成
分を燃焼除去する手段とを設けた排ガス処理装置におい
て、前記排ガスの流れ方向に沿ってその前流側に悪臭ま
たは有害成分を吸着する耐熱性吸着剤層、後流側に前記
吸着剤層から脱着された有害成分を燃焼除去する燃焼触
媒層を配置して吸着−燃焼触媒層を形成し、かつ該吸着
−燃焼触媒層を排ガス流れに直角な断面上２つ以上複数
に分割し、分割した吸着−燃焼触媒層の吸着剤層ごとに
通電により発熱する加熱手段を設けたことを特徴とする
排ガス処理装置。2. An adsorbent layer for adsorbing an odor or harmful component contained in exhaust gas, a means for heating and desorbing the adsorbed odor or harmful component from the adsorbent layer, and a means for burning and removing the desorbed harmful component. In the exhaust gas treatment device provided with, a heat-resistant adsorbent layer that adsorbs odorous or harmful components on the upstream side along the flow direction of the exhaust gas, and the harmful components desorbed from the adsorbent layer on the downstream side. The adsorption-combustion catalyst layer is formed by arranging a combustion catalyst layer to be removed by combustion, and the adsorption-combustion catalyst layer is divided into two or more sections on a cross section perpendicular to the exhaust gas flow. An exhaust gas treatment device comprising a heating means for generating heat by energization for each adsorbent layer.
着−燃焼触媒層の間に絶縁性の断熱材よりなる仕切りを
設けたことを特徴とする排ガス処理装置。3. The exhaust gas treatment apparatus according to claim 2, wherein a partition made of an insulating heat insulating material is provided between each of the plurality of divided adsorption-combustion catalyst layers.
−燃焼触媒層ごとに吸着剤層を順次通電加熱する手段を
設けたことを特徴とする排ガス処理装置。4. The exhaust gas treatment apparatus according to claim 2, further comprising means for sequentially heating the adsorbent layer for each of the plurality of divided adsorption-combustion catalyst layers.
割した吸着−燃焼触媒層の燃焼触媒層にも通電により発
熱するヒータ機能を内装したことを特徴とする排ガス処
理装置。5. The exhaust gas treatment device according to claim 2, wherein the combustion catalyst layer of the divided adsorption-combustion catalyst layer is also provided with a heater function for generating heat by energization.
層を積層し、通電により発熱するヒータ機能を一体化し
たことを特徴とする排ガス処理装置。6. An exhaust gas treatment apparatus according to claim 5, wherein an adsorbent layer and a combustion catalyst layer are stacked, and a heater function for generating heat when energized is integrated.
を排ガス流路上流に設けた吸着剤手段により吸着し、吸
着した有害成分を該吸着剤手段から脱着し、脱着した有
害成分を前記吸着剤手段の後流に設けた燃焼触媒手段に
より燃焼除去する排ガス処理方法において、前記吸着剤
手段と前記燃焼触媒手段を連通状態とした吸着−燃焼触
媒手段を排ガス流れに直角方向断面上に２以上複数に分
割して配置し、分割された各吸着−燃焼触媒手段に排ガ
スをそれぞれ分流させるとともに、分割された前記吸着
剤手段を所定の時間ずらせて通電加熱手段により加熱し
て有害ガスを脱着し、通電加熱中の吸着剤手段に流入す
る排ガス流量を非加熱時よりも減少させ、その減少分を
他の非加熱吸着剤手段に流入させ、前記脱着した有害ガ
スを排ガスとともに下流の燃焼触媒手段に供給して燃焼
することを特徴とする排ガス処理方法。7. An odorous or harmful component contained in exhaust gas is adsorbed by an adsorbent means provided upstream of the exhaust gas channel, the adsorbed harmful component is desorbed from the adsorbent means, and the desorbed harmful component is adsorbed by the adsorbent. In an exhaust gas treatment method for burning and removing by a combustion catalyst means provided downstream of the means, two or more adsorption-combustion catalyst means having the adsorbent means and the combustion catalyst means in communication with each other are provided on a cross section in a direction perpendicular to the exhaust gas flow. The exhaust gas is separately diverted to each of the divided adsorption-combustion catalyst means, and the divided adsorbent means is shifted by a predetermined time and heated by an electric heating means to desorb harmful gases, The flow rate of exhaust gas flowing into the adsorbent means during energization heating is reduced from that during non-heating, and the reduced amount is flowed into other non-heating adsorbent means, and the desorbed harmful gas is discharged together with the exhaust gas. An exhaust gas treatment method characterized in that it is supplied to downstream combustion catalyst means and burned.
−燃焼触媒手段の吸着剤手段加熱時に燃焼触媒手段を加
熱するようにしたことを特徴とする排ガス処理方法。8. The exhaust gas treatment method according to claim 7, wherein the combustion catalyst is heated when the adsorbent of the adsorption-combustion catalyst in the communicating state is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9220438A JPH1157392A (en) | 1997-08-15 | 1997-08-15 | Treatment of waste gas and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9220438A JPH1157392A (en) | 1997-08-15 | 1997-08-15 | Treatment of waste gas and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1157392A true JPH1157392A (en) | 1999-03-02 |
Family
ID=16751119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9220438A Pending JPH1157392A (en) | 1997-08-15 | 1997-08-15 | Treatment of waste gas and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1157392A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101250940B1 (en) * | 2009-05-04 | 2013-04-04 | 주식회사 엔바이온 | The treating system of odors and volatile organic compounds simultaneously |
| JP2013255906A (en) * | 2012-06-14 | 2013-12-26 | Showa:Kk | Method of treating soil polluting water by photocatalyst material |
-
1997
- 1997-08-15 JP JP9220438A patent/JPH1157392A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101250940B1 (en) * | 2009-05-04 | 2013-04-04 | 주식회사 엔바이온 | The treating system of odors and volatile organic compounds simultaneously |
| JP2013255906A (en) * | 2012-06-14 | 2013-12-26 | Showa:Kk | Method of treating soil polluting water by photocatalyst material |
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