JP2002136840A - Method and equipment for treating exhaust - Google Patents
Method and equipment for treating exhaustInfo
- Publication number
- JP2002136840A JP2002136840A JP2000337735A JP2000337735A JP2002136840A JP 2002136840 A JP2002136840 A JP 2002136840A JP 2000337735 A JP2000337735 A JP 2000337735A JP 2000337735 A JP2000337735 A JP 2000337735A JP 2002136840 A JP2002136840 A JP 2002136840A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- medicine
- detour
- chemical
- dust collecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (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と排
ガス処理設備に関し、詳しくは、ゴミ焼却時などに発生
する排ガス中の酸性ガス成分の無害化処理を乾式で行う
排ガス処理方法と排ガス処理設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas treatment method and an exhaust gas treatment equipment, and more particularly, to an exhaust gas treatment method and an exhaust gas treatment equipment for performing a detoxification treatment of acidic gas components in exhaust gas generated at the time of incineration of refuse or the like by a dry method. About.
【０００２】[0002]
【従来の技術】ゴミ焼却処理施設などにおいて設けられ
ている排ガス処理設備は、焼却によって生じる排ガス
に、ＨＣｌ，ＳＯx などの酸性ガスからなる有害成分が
含まれているため、これらを除去してから大気に放出す
るようにしている。BACKGROUND ART exhaust gas treatment facility provided in the dust incineration facilities, the exhaust gas caused by incineration, HCl, because it contains harmful components consisting of acidic gases such as SO x, to remove these From the atmosphere.
【０００３】このような排ガス処理設備としては、例え
ば、乾式法では図４に示すように構成されている。すな
わち、焼却炉から排出された排ガスは、節炭器あるいは
減温器１に導入されてから、バグフィルター等からなる
集塵機２にダクト３ａを経由して供給されるようになっ
ているが、その途中で薬剤が吹き込まれて、酸性ガス成
分を中和・除去すると共に、塵芥などが取り除かれて清
浄化され、再びダクト３ｂを経由して誘引通風機４によ
り煙突５から大気に放出される。[0003] Such an exhaust gas treatment facility is configured, for example, as shown in FIG. 4 in a dry method. That is, the exhaust gas discharged from the incinerator is introduced into the economizer 1 or the desuperheater 1 and then supplied to the dust collector 2 composed of a bag filter or the like via the duct 3a. A chemical is blown on the way to neutralize and remove the acid gas component, remove dust and the like, and purify it. Then, the gas is discharged from the chimney 5 to the atmosphere by the induction ventilator 4 again through the duct 3b.
【０００４】薬剤は、薬剤貯槽６から所定量だけ供給さ
れるように定量供給機７を介してファンあるいはブロワ
８により、空気と共に集塵機２の上流側の排ガス経路で
あるダクト３ａに吹き込まれる。従来よく用いられる消
石灰は、低温ほど反応効率が高いことと、ダイオキシン
類の再合成抑制を目的として、減温器にて２００℃以下
程度に冷却される。[0004] The medicine is blown together with air into a duct 3 a, which is an exhaust gas path on the upstream side of the dust collector 2, by a fan or a blower 8 via a fixed amount supply device 7 so as to be supplied from the medicine storage tank 6 by a predetermined amount. Slaked lime, which is conventionally often used, is cooled to about 200 ° C. or lower by a temperature reducer for the purpose of increasing the reaction efficiency at lower temperatures and suppressing the resynthesis of dioxins.
【０００５】このように、排ガス中の酸性ガス成分に対
して、バグフィルターの上流側に設けられているダクト
３ａの薬剤吹き込み口に、ファンあるいはブロワ８を介
して重炭酸ナトリウム、消石灰などのアルカリ性薬剤を
空気と共に吹き込むようにして、酸性ガス成分、例えば
ＨＣｌであればこれを塩化カルシウム、塩化ナトリウム
にして、集塵機２により取り出す中和処理を行ってい
る。この薬剤が重炭酸ナトリウムである場合は、加熱さ
れることにより二酸化炭素を放出して多孔質の炭酸ナト
リウムとなり、活性度の高い状態で排ガス中の酸性ガス
成分と反応する。[0005] As described above, the acidic gas component in the exhaust gas is supplied to the chemical injection port of the duct 3 a provided on the upstream side of the bag filter through the fan or the blower 8 through the alkaline gas such as sodium bicarbonate and slaked lime. A neutralizing process is performed in which the chemical is blown together with air to convert acidic gas components, for example, HCl, into calcium chloride and sodium chloride. When the agent is sodium bicarbonate, the agent releases carbon dioxide by heating to become porous sodium carbonate, and reacts with the acidic gas component in the exhaust gas in a state of high activity.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、薬剤の
多孔質化を進行させるためには、排ガス中での滞留時間
を長くする必要があり、例えば重炭酸ナトリウムでは、
少なくとも１４０℃以上で１〜３秒間維持することを要
するが、一般に、薬剤吹き込み口から集塵機までの経路
が短く、そのため、導入された薬剤を好ましい多孔質化
状態にするに十分な滞留時間を確保できるとは限らな
い。その結果、薬剤の吹き込み量を不必要に多くしなけ
ればならないなど、必ずしも効率的とは言えず改良の余
地があった。又、薬剤を吹き込むためには多量の空気を
必要とし、集塵装置、誘引送風機などの下流機器の容量
が大きくなるという問題がある。However, in order to make the drug porous, it is necessary to increase the residence time in the exhaust gas. For example, in the case of sodium bicarbonate,
It is necessary to maintain at least 140 ° C. or higher for 1 to 3 seconds, but in general, the path from the chemical injection port to the dust collector is short, so that a sufficient residence time is ensured to bring the introduced chemical into a preferable porous state. Not always. As a result, it is not necessarily efficient, and there is room for improvement, such as the need to unnecessarily increase the injection amount of the drug. In addition, a large amount of air is required to inject the chemical, and there is a problem that the capacity of downstream equipment such as a dust collector and an induction blower is increased.
【０００７】更に、重炭酸ナトリウムを微粉砕して使用
すると、消石灰などに比べて格段に高い反応効率が得ら
れることがわかっているが、重炭酸ナトリウムを微粉砕
して貯槽にストックしておくことにより、粒子どうしが
ブリッジを作り易く、重炭酸ナトリウムの安定した供給
が困難となる。Further, it has been found that the use of sodium bicarbonate in a finely pulverized state can provide a much higher reaction efficiency than slaked lime or the like. However, sodium bicarbonate is finely pulverized and stored in a storage tank. This makes it easy for the particles to form a bridge, making it difficult to supply sodium bicarbonate stably.
【０００８】そこで、本発明の目的は、上記従来技術の
有する問題点に鑑みて、排ガスの酸性ガス成分の中和処
理に際して、吹き込む薬剤の多孔質化を十分に行うべく
薬剤の滞留時間を長くできると共に、微粉砕した薬剤を
そのまま吹き込むことができるようにして、効率の良い
中和処理が可能な排ガス処理方法と排ガス処理設備を提
供すること、又、再循環ガスを用いて薬剤を吹き込むこ
とによって、排ガス量が増加することのない、排ガス処
理方法と排ガス処理設備を提供することにある。Accordingly, an object of the present invention is to increase the residence time of the chemicals in the neutralization treatment of the acidic gas component of the exhaust gas in order to sufficiently make the chemicals to be blown porous, in view of the above-mentioned problems of the prior art. To provide an exhaust gas treatment method and an exhaust gas treatment facility capable of performing efficient neutralization treatment by allowing the finely pulverized medicine to be blown as it is, and to blow the medicine using recirculated gas. Accordingly, an object of the present invention is to provide an exhaust gas treatment method and an exhaust gas treatment facility that do not increase the amount of exhaust gas.
【０００９】[0009]
【課題を解決するための手段】上記目的は、請求項記載
の各発明により達成される。すなわち、本発明に係る排
ガス処理方法の特徴構成は、排ガス中の酸性ガス成分を
中和処理するための薬剤を排ガス中に導入し、集塵手段
により前記排ガス中の塵芥および／又は反応生成物を処
理する方法であって、前記集塵手段の上流側または下流
側のいずれか一方又は双方に設けられた迂回路に前記薬
剤の導入を行うと共に、この導入の直前に、前記薬剤を
粉砕することにある。The above object is achieved by the inventions described in the claims. That is, the characteristic configuration of the exhaust gas treatment method according to the present invention is such that a chemical for neutralizing an acidic gas component in the exhaust gas is introduced into the exhaust gas, and dust and / or a reaction product in the exhaust gas are collected by the dust collecting means. And introducing the drug into a detour provided on one or both of the upstream and downstream sides of the dust collecting means, and crushing the drug immediately before the introduction. It is in.
【００１０】この構成によれば、導入された薬剤が迂回
路を経由した排ガスに晒されるので、加熱・滞留時間を
長く確保できて十分に活性化され、排ガス中の酸性ガス
成分との反応が促進される。その結果、効率の良い中和
処理が可能な排ガス処理方法を提供することができる。
しかも、迂回路に導入する薬剤を導入直前に粉砕してい
るので、貯槽内でのブリッジも生じることなく安定した
薬剤の供給が可能となる。この場合、薬剤としては、酸
性ガス成分を中和して無害な中性物質に変え得るアルカ
リ物質、例えば重炭酸ナトリウム、炭酸ナトリウム、そ
の他を使用することができる。又、この方法により排ガ
ス量が増加することはなかった。According to this configuration, the introduced chemical is exposed to the exhaust gas passing through the detour, so that the heating / residence time can be ensured for a long time, sufficiently activated, and the reaction with the acidic gas component in the exhaust gas can be achieved. Promoted. As a result, an exhaust gas treatment method capable of performing an efficient neutralization treatment can be provided.
In addition, since the medicine to be introduced into the bypass is crushed immediately before introduction, a stable supply of the medicine can be achieved without causing a bridge in the storage tank. In this case, as the chemical, an alkaline substance that can neutralize an acidic gas component and convert it into a harmless neutral substance, for example, sodium bicarbonate, sodium carbonate, or the like can be used. Also, the amount of exhaust gas did not increase by this method.
【００１１】前記薬剤の粉砕を、その平均粒径が２０μ
ｍ以下になるように行うことが好ましい。The pulverization of the above-mentioned drug is carried out when the average particle size is 20 μm.
m or less.
【００１２】この構成によれば、薬剤と排ガス中の酸性
ガス成分との反応が確実かつ高効率に促進される。According to this configuration, the reaction between the chemical and the acidic gas component in the exhaust gas is reliably and efficiently promoted.
【００１３】前記集塵手段が複数個並列されていて、前
記薬剤を導入する迂回路を前記集塵手段間に設けて、こ
の迂回路に前記薬剤の導入を行うことが好ましい。It is preferable that a plurality of the dust collecting means are arranged in parallel, and a bypass for introducing the medicine is provided between the dust collecting means, and the medicine is introduced into the bypass.
【００１４】この構成によれば、導入された薬剤が迂回
路を経由して排ガスに晒され、加熱・滞留時間を長くで
きて十分に活性化されて、排ガス中の酸性ガス成分との
反応が促進される。According to this configuration, the introduced chemical is exposed to the exhaust gas via the bypass, and the heating and residence time can be extended to be sufficiently activated, so that the reaction with the acidic gas component in the exhaust gas can be achieved. Promoted.
【００１５】前記薬剤が、加熱されて多孔質化する物質
であることが好ましい。It is preferable that the drug is a substance which becomes porous when heated.
【００１６】この構成によれば、薬剤の比表面積が拡張
され顕著に活性化されるので、酸性ガス成分の中和処理
を行う上で都合がよい。このような薬剤例としては、重
炭酸ナトリウムが挙げられる。すなわち、重炭酸ナトリ
ウムは１４０〜５００℃程度の温度域で次式のように分
解され、ガス成分が揮発し、多孔質で活性化されたＮａ
2 ＣＯ3 となる。According to this configuration, the specific surface area of the drug is expanded and markedly activated, which is convenient for neutralizing the acidic gas component. Examples of such agents include sodium bicarbonate. That is, sodium bicarbonate is decomposed in a temperature range of about 140 to 500 ° C. as in the following formula, the gas component is volatilized, and the porous activated Na is decomposed.
It becomes 2 CO 3 .
【００１７】 ２ＮａＨＣＯ3 →Ｎａ2 ＣＯ3 ＋ＣＯ2 ＋Ｈ2 Ｏ 本発明に係る排ガス処理設備の特徴構成は、排ガス中の
酸性ガス成分を中和処理するための薬剤を排ガス中に導
入する薬剤供給手段を備えると共に、塵芥および／又は
反応生成物を集塵処理する集塵手段を有していて、前記
薬剤供給手段が、前記集塵手段の上流側または下流側の
いずれか一方又は双方に設けられた迂回路に接続されて
いると共に、この迂回路と前記薬剤供給手段との間に、
前記迂回路に供給する前記薬剤を粉砕する粉砕手段が設
けられていることにある。2NaHCO 3 → Na 2 CO 3 + CO 2 + H 2 O A characteristic configuration of the exhaust gas treatment equipment according to the present invention is a chemical supply means for introducing a chemical for neutralizing an acidic gas component in the exhaust gas into the exhaust gas. And dust collecting means for collecting dust and / or reaction products, wherein the chemical supply means is provided on one or both of the upstream and downstream sides of the dust collecting means. Connected to the detour, and between the detour and the drug supply means,
A crushing means for crushing the medicine to be supplied to the bypass is provided.
【００１８】この構成によれば、排ガスの酸性ガス成分
の中和処理に際して、吹き込む薬剤の多孔質化を十分に
行うべく薬剤の滞留時間を長くできると共に、粉砕した
薬剤をそのまま吹き込むことができるようにして、効率
の良い中和処理が可能な排ガス処理設備を提供するこ
と、又、薬剤を吹き込むことによって、排ガス量が増加
することのない排ガス処理設備を提供することができ
た。According to this configuration, in the neutralization treatment of the acidic gas component of the exhaust gas, the residence time of the medicine can be lengthened to sufficiently make the medicine to be blown porous, and the pulverized medicine can be blown as it is. Thus, it was possible to provide an exhaust gas treatment facility capable of performing an efficient neutralization treatment, and to provide an exhaust gas treatment facility that does not increase the amount of exhaust gas by blowing a chemical.
【００１９】前記薬剤の粉砕手段が、前記薬剤の平均粒
径を２０μｍ以下になるように粉砕することが好まし
い。It is preferable that the medicine pulverizing means pulverize the medicine so that the average particle diameter of the medicine is 20 μm or less.
【００２０】この構成によれば、薬剤と排ガス中の酸性
ガス成分との反応を確実かつ高効率に促進できて都合が
よい。粉砕手段としては、市販の各種粉砕機を使用でき
るが、迂回路に還流される排ガスが１４０℃以上に加熱
されているので、この加熱された排ガスを内部に通流さ
せつつ、粉砕・分級を行うようにし、このように処理さ
れた薬剤を迂回路に導入できる機構を備えた粉砕機が好
ましい。粉砕機内で、薬剤の微粉砕化と多孔質化が促進
されるからである。According to this configuration, the reaction between the chemical and the acidic gas component in the exhaust gas can be reliably and efficiently promoted, which is convenient. As the pulverizing means, various commercially available pulverizers can be used, but since the exhaust gas refluxed to the bypass is heated to 140 ° C. or higher, the pulverization / classification is performed while allowing the heated exhaust gas to flow inside. It is preferable to use a pulverizer having a mechanism capable of introducing the thus-treated drug into the bypass. This is because in the pulverizer, the fine pulverization and the porosity of the drug are promoted.
【００２１】前記薬剤供給手段が、前記迂回路の途中に
設けられた再循環送風機により、集塵処理された排ガス
の一部を取り出して前記集塵機の上流側に導入する途中
に、薬剤貯槽から所定量の薬剤を供給することが好まし
い。The medicine supply means takes out a part of the exhaust gas subjected to dust collection by a recirculating blower provided in the middle of the detour and introduces the exhaust gas to the upstream side of the dust collector. Preferably, a fixed amount of drug is provided.
【００２２】この構成によれば、処理済みの排ガスを排
出する設備の負荷を低減できるので、排出設備はより小
型のものでよく、システム全体の設備コストを低減でき
て都合がよい。According to this configuration, the load on the equipment for discharging the treated exhaust gas can be reduced, so that the size of the exhaust equipment can be smaller, and the equipment cost of the entire system can be reduced, which is convenient.
【００２３】前記集塵手段が複数個並列されていて、前
記薬剤を導入する迂回路を前記集塵手段間に設けて、前
記迂回路の途中に再循環送風機が配設されていると共
に、この再循環送風機の上流側もしくは下流側に、薬剤
貯槽から所定量の薬剤が供給されるように構成されてい
ることが好ましい。A plurality of the dust collecting means are arranged in parallel, a bypass for introducing the medicine is provided between the dust collecting means, and a recirculating blower is provided in the middle of the bypass. It is preferable that a predetermined amount of medicine is supplied from the medicine storage tank upstream or downstream of the recirculation blower.
【００２４】この構成によれば、導入された薬剤の加熱
・滞留時間を長くできて十分に活性化されて、排ガス中
の酸性ガス成分との反応が促進される。しかも、処理済
みの排ガスを排出する誘引通風機を含めた設備の容量を
低減でき、排出設備を小型のものにして、システム全体
の設備コストを低減できて都合がよい。According to this configuration, the heating and residence time of the introduced drug can be lengthened and sufficiently activated, and the reaction with the acidic gas component in the exhaust gas is promoted. In addition, the capacity of the equipment including the induction ventilator for discharging the treated exhaust gas can be reduced, and the size of the exhaust equipment can be reduced, so that the equipment cost of the entire system can be reduced, which is convenient.
【００２５】前記集塵手段の上流側に、前記薬剤を導入
する前記迂回路を設けて、この迂回路の途中に再循環送
風機が配設されていると共に、この再循環送風機の上流
側もしくは下流側に、薬剤貯槽から所定量の薬剤が供給
されるように構成されていることが好ましい。The bypass for introducing the chemical is provided on the upstream side of the dust collecting means, and a recirculation blower is provided in the middle of the bypass, and the upstream or downstream of the recirculation blower is provided. On the side, it is preferable that a predetermined amount of medicine is supplied from the medicine storage tank.
【００２６】この構成によっても、導入された薬剤の加
熱・滞留時間を長くできて十分に活性化されて、排ガス
中の酸性ガス成分との反応が促進される。しかも、処理
済みの排ガスを排出する集塵機を含めた設備の容量を低
減でき、排出設備を一層小型のものにして、システム全
体の設備コストを一層低減できて都合がよい。According to this configuration, the heating and residence time of the introduced drug can be prolonged and the drug can be sufficiently activated to promote the reaction with the acidic gas component in the exhaust gas. In addition, the capacity of the equipment including the dust collector for discharging the treated exhaust gas can be reduced, the size of the exhaust equipment can be made smaller, and the equipment cost of the entire system can be further reduced, which is convenient.
【００２７】[0027]
【発明の実施の形態】本発明の実施の形態を、図面を参
照して詳細に説明する。Embodiments of the present invention will be described in detail with reference to the drawings.
【００２８】（第１実施形態）図１は、第１実施形態の
排ガス処理設備の概略全体構成を示す。この排ガス処理
設備は、従来技術と同様に、焼却炉から排出された排ガ
スが、減温器１に導入されてから、バグフィルター等か
らなる集塵手段である集塵機２にダクト３を経由して供
給されるようになっており、その途中で薬剤が吹き込ま
れて、排ガス中の酸性ガス成分を中和処理すると共に、
塵芥などを取り除き、誘引通風機４を介して清浄になっ
た排ガスを煙突５から大気に放出する。従来技術と異な
るのは、集塵機２から排出される排ガスの一部を取り出
し、これを集塵機２の上流側に導入する迂回路９を設け
ると共に、この迂回路９の途中に薬剤の供給を行ってい
ることと、薬剤貯槽６と迂回路９の間に薬剤を微粉砕す
る粉砕手段Ｃが配置されていることである。(First Embodiment) FIG. 1 shows a schematic overall configuration of an exhaust gas treatment facility of a first embodiment. In this exhaust gas treatment equipment, as in the prior art, after the exhaust gas discharged from the incinerator is introduced into the desuperheater 1, the exhaust gas is passed through the duct 3 to the dust collector 2, which is a dust collecting means including a bag filter. The medicine is blown on the way, neutralizing the acidic gas components in the exhaust gas,
The dust and the like are removed, and the cleaned exhaust gas is discharged from the chimney 5 to the atmosphere via the induction ventilator 4. What differs from the prior art is that a bypass 9 is provided to take out a part of the exhaust gas discharged from the dust collector 2 and introduce it to the upstream side of the dust collector 2, and to supply the medicine in the middle of the bypass 9. And that a crushing means C for finely crushing the medicine is disposed between the medicine storage tank 6 and the detour 9.
【００２９】すなわち、迂回路９の途中に取り付けられ
た再循環送風機１０により、集塵処理された排ガスの一
部を取り出して、集塵機２の上流側に導入する途中に、
薬剤貯槽６から所定量の薬剤が粉砕手段Ｃにより微粉砕
されて供給されるように定量供給機７を介して、迂回路
９に供給するようになっている。この場合の薬剤供給手
段は、薬剤貯槽６と、定量供給機７とからなる。薬剤貯
槽６には、平均粒径１００〜１５０μｍ程度の重炭酸ナ
トリウムなどの薬剤が貯留されている。That is, a part of the exhaust gas that has been subjected to the dust collection process is taken out by the recirculating blower 10 attached in the middle of the bypass 9 and is introduced into the upstream side of the dust collector 2.
A predetermined amount of medicine is supplied from the medicine storage tank 6 to the detour 9 via the quantitative supply device 7 so that the medicine is finely pulverized by the pulverizing means C and supplied. In this case, the medicine supply means includes a medicine storage tank 6 and a fixed-quantity supply machine 7. The drug storage tank 6 stores a drug such as sodium bicarbonate having an average particle size of about 100 to 150 μm.
【００３０】粉砕手段Ｃとしては、市販の各種粉砕機を
使用できるが、特に、加熱状態にある排ガスを迂回路９
から内部に通流させつつ、粉砕・分級を行うようにした
分散型粉砕機（例えば、ホソカワミクロン株式会社製の
商品名「ドライマイスタ」等）を好適に使用できる。こ
の粉砕機で処理された薬剤を迂回路９に導入すると、こ
の粉砕機により、薬剤を平均粒径２０μｍ以下程度の微
粉砕化を容易にできると共に、薬剤の多孔質化が促進さ
れて都合がよく、しかも薬剤が加熱状態に晒されるので
粉砕機内で薬剤が付着し難く、保守が行い易い。もっと
も、薬剤を加熱するのに別熱源を粉砕機に導入するよう
にしてもよく、更には炉から排出された比較的高温（例
えば、１６０〜３５０℃）の燃焼排ガスを導入するよう
に構成してもよい。As the crushing means C, various commercially available crushers can be used.
A dispersion-type pulverizer (for example, a product name “Dry Meister” manufactured by Hosokawa Micron Corporation) that performs pulverization and classification while flowing through the inside can be suitably used. When the drug treated by this pulverizer is introduced into the detour 9, the pulverizer can easily pulverize the drug to an average particle size of about 20 μm or less, and promote the porosity of the drug, which is convenient. Since the medicine is exposed to a heated state, the medicine hardly adheres to the inside of the crusher, and maintenance is easy. Of course, a separate heat source may be introduced into the crusher to heat the chemical, and furthermore, a configuration is adopted in which relatively high temperature (for example, 160 to 350 ° C.) combustion exhaust gas discharged from the furnace is introduced. You may.
【００３１】このように構成することにより、吹き込ま
れた薬剤の滞留時間を長くすることができ、薬剤の多孔
質化が促進されて確実に活性化される。しかも、誘引通
風機４の容量を低減できるので、誘引通風機４は小型の
ものでよく、システム全体の設備コストを低減できる。With such a configuration, the residence time of the injected medicine can be lengthened, and the porosity of the medicine is promoted and the medicine is reliably activated. Moreover, since the capacity of the induction ventilator 4 can be reduced, the induction ventilator 4 can be small and the equipment cost of the entire system can be reduced.
【００３２】（第２実施形態）図２は、第２実施形態の
排ガス処理設備の概略全体構成を示す。この排ガス処理
設備は、集塵機を２台並設して集塵機能を高めると共
に、これら集塵機２ａ，２ｂ間に迂回路９を設けて構成
されている。この迂回路９の途中に再循環送風機１０が
配設されていると共に、その下流側に、薬剤貯槽６と定
量供給機７と粉砕手段Ｃとが設けられていて、所定量の
薬剤が迂回路への導入直前に粉砕されて供給されるよう
に構成されている。再循環送風機１０により、上流側の
集塵機２ａから排出される排ガスの一部が迂回路９に取
り込まれ、この排ガスの流路途中に薬剤が導入される。
再循環送風機１０は、外部から空気を取り込む構造を有
しないため、下流側に配置されている誘引通風機４の容
量を高めることもない。(Second Embodiment) FIG. 2 shows a schematic overall configuration of an exhaust gas treatment facility of a second embodiment. This exhaust gas treatment equipment is configured by providing two dust collectors side by side to enhance the dust collecting function, and by providing a bypass 9 between these dust collectors 2a and 2b. A recirculation blower 10 is provided in the middle of the detour 9, and a drug storage tank 6, a fixed-quantity feeder 7, and a crushing means C are provided downstream of the recirculation blower 10. It is configured to be pulverized and supplied just before introduction into the apparatus. A part of the exhaust gas discharged from the dust collector 2a on the upstream side is taken into the detour 9 by the recirculating blower 10, and the medicine is introduced in the middle of the flow path of the exhaust gas.
Since the recirculation blower 10 does not have a structure for taking in air from the outside, the capacity of the induction blower 4 arranged on the downstream side is not increased.
【００３３】このようにしても、導入された薬剤の滞留
時間を長くすることができ、薬剤の効果に関して第１実
施形態と同様な効果を発揮し得る。この実施形態の場
合、誘引通風機４の容量を低減でき、システム全体の設
備コストを更に低減できる。[0033] Also in this case, the residence time of the introduced drug can be prolonged, and the effect of the drug can be the same as that of the first embodiment. In the case of this embodiment, the capacity of the induced draft fan 4 can be reduced, and the equipment cost of the entire system can be further reduced.
【００３４】（第３実施形態）図３は、第３実施形態の
排ガス処理設備の概略全体構成を示す。この排ガス処理
設備は、薬剤吹き込みのための迂回路９を、集塵機２の
上流側になるように構成したものであり、他の構成は第
１実施形態と同じである。このように構成しても、迂回
路９を通る排ガス中の含塵濃度が高いだけで、第１実施
形態と同様な効果を発揮し得るものであるが、集塵機２
を通過する排ガス量は第１実施形態の場合より少なくな
り、システム全体の設備コストを低減できる。(Third Embodiment) FIG. 3 shows a schematic overall configuration of an exhaust gas treatment facility of a third embodiment. In this exhaust gas treatment equipment, the bypass 9 for blowing the chemical is configured to be on the upstream side of the dust collector 2, and the other configuration is the same as that of the first embodiment. Even with such a configuration, the same effect as in the first embodiment can be exerted only by a high dust-containing concentration in the exhaust gas passing through the detour 9, but the dust collector 2
The amount of exhaust gas passing through is smaller than in the first embodiment, and the equipment cost of the entire system can be reduced.
【００３５】〔別実施の形態〕 （１）本発明に適用される薬剤としては、重炭酸ナトリ
ウム以外に、消石灰、炭酸ナトリウム、セキス炭酸ナト
リウム、天然ソーダ等あるいはこれらの複合剤を採用で
きる。[Another Embodiment] (1) As a drug applied to the present invention, slaked lime, sodium carbonate, sodium sexquicarbonate, natural soda, etc., or a complex agent thereof can be employed in addition to sodium bicarbonate.
【００３６】（２）集塵手段としては、パルスジェット
式あるいは逆洗式などのバグフィルター装置、電気集塵
機などを使用することができ、特に限定されるものでは
ない。(2) As the dust collecting means, a bag filter device such as a pulse jet type or a backwash type, an electric dust collector, or the like can be used, and is not particularly limited.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係る第１実施形態の排ガス処理設備の
概略構成図FIG. 1 is a schematic configuration diagram of an exhaust gas treatment facility of a first embodiment according to the present invention.
【図２】本発明に係る第２実施形態の排ガス処理設備の
概略構成図FIG. 2 is a schematic configuration diagram of an exhaust gas treatment facility of a second embodiment according to the present invention.
【図３】本発明に係る第３実施形態の排ガス処理設備の
概略構成図FIG. 3 is a schematic configuration diagram of an exhaust gas treatment facility of a third embodiment according to the present invention.
【図４】従来の排ガス処理設備の概略構成図FIG. 4 is a schematic configuration diagram of a conventional exhaust gas treatment facility.
２ 集塵手段 ６ 薬剤貯槽 ９ 迂回路 １０ 再循環送風機 Ｃ 粉砕手段 2 Dust collecting means 6 Chemical storage tank 9 Detour 10 Recirculating blower C Crushing means
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２７Ｄ 17/00 １０４ Ｆ２３Ｊ 15/00 Ｚ １０５ Ｂ (72)発明者 倉田 昌明 兵庫県尼崎市金楽寺町２丁目２番33号 株 式会社タクマ内 Ｆターム(参考） 3K070 DA03 DA05 DA16 DA32 DA83 4D002 AA19 AA40 AB01 AC04 BA12 BA14 BA20 CA11 CA13 DA02 DA16 EA06 FA02 FA04 GA01 GB12 HA08 4K056 AA19 CA20 DB02 DB07 DB13Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (Reference) F27D 17/00 104 F23J 15/00 Z 105 B (72) Inventor Masaaki Kurata 2-2-233 Kinrakujimachi, Amagasaki City, Hyogo Prefecture No. F-term in Takuma Co., Ltd. (Reference) 3K070 DA03 DA05 DA16 DA32 DA83 4D002 AA19 AA40 AB01 AC04 BA12 BA14 BA20 CA11 CA13 DA02 DA16 EA06 FA02 FA04 GA01 GB12 HA08 4K056 AA19 CA20 DB02 DB07 DB13
Claims (9)
ための薬剤を排ガス中に導入し、集塵手段により前記排
ガス中の塵芥および／又は反応生成物を処理する排ガス
処理方法であって、前記集塵手段の上流側または下流側
のいずれか一方又は双方に設けられた迂回路に前記薬剤
の導入を行うと共に、この導入の直前に、前記薬剤を粉
砕することを特徴とする排ガス処理方法。An exhaust gas treatment method comprising introducing a chemical for neutralizing an acidic gas component in an exhaust gas into the exhaust gas, and treating dust and / or a reaction product in the exhaust gas by a dust collecting means. Exhaust gas treatment, wherein the agent is introduced into a detour provided on one or both of the upstream side and the downstream side of the dust collecting means, and the agent is crushed immediately before the introduction. Method.
μｍ以下になるように行う請求項１の排ガス処理方法。2. The pulverization of the drug is carried out when the average particle size is 20.
2. The exhaust gas treatment method according to claim 1, wherein the treatment is performed so as to be not more than μm.
前記薬剤を導入する迂回路を前記集塵手段間に設けて、
この迂回路に前記薬剤の導入を行う請求項１又は２の排
ガス処理方法。3. A plurality of said dust collecting means are arranged in parallel,
Providing a detour between the dust collecting means for introducing the medicine,
The exhaust gas treatment method according to claim 1 or 2, wherein the agent is introduced into the detour.
質である請求項１〜３のいずれか１の排ガス処理方法。4. The exhaust gas treatment method according to claim 1, wherein the chemical is a substance that becomes porous when heated.
ための薬剤を排ガス中に導入する薬剤供給手段を備える
と共に、塵芥および／又は反応生成物を集塵処理する集
塵手段を有する排ガス処理設備であって、前記薬剤供給
手段が、前記集塵手段の上流側または下流側のいずれか
一方又は双方に設けられた迂回路に接続されていると共
に、この迂回路と前記薬剤供給手段との間に、前記迂回
路に供給する前記薬剤を粉砕する粉砕手段が設けられて
いることを特徴とする排ガス処理設備。5. An exhaust gas having a chemical supply means for introducing a chemical for neutralizing an acidic gas component in the exhaust gas into the exhaust gas and a dust collecting means for collecting dust and / or a reaction product. In the treatment equipment, the medicine supply means is connected to a detour provided on one or both of the upstream side and the downstream side of the dust collecting means, and the detour and the medicine supply means are provided. And a pulverizing means for pulverizing the chemical supplied to the bypass.
粒径を２０μｍ以下になるように粉砕する請求項５の排
ガス処理設備。6. The exhaust gas treatment equipment according to claim 5, wherein the medicine crushing means crushes the medicine so that the average particle diameter of the medicine is 20 μm or less.
に設けられた再循環送風機により、集塵処理された排ガ
スの一部を取り出して前記集塵機の上流側に導入する途
中に、薬剤貯槽から所定量の薬剤を供給する請求項５又
は６の排ガス処理設備。7. A medicine storage tank, wherein the medicine supply means takes out a part of the exhaust gas subjected to dust collection processing by a recirculating blower provided in the middle of the bypass and introduces the exhaust gas upstream of the dust collector. The exhaust gas treatment equipment according to claim 5 or 6, wherein a predetermined amount of the medicine is supplied from the exhaust gas treatment apparatus.
前記薬剤を導入する迂回路を前記集塵手段間に設けて、
前記迂回路の途中に再循環送風機が配設されていると共
に、この再循環送風機の上流側もしくは下流側に、薬剤
貯槽から所定量の薬剤が供給されるように構成されてい
る請求項５又は６の排ガス処理設備。8. A plurality of dust collecting means are arranged in parallel,
Providing a detour between the dust collecting means for introducing the medicine,
A recirculation blower is provided in the middle of the detour, and a predetermined amount of medicine is supplied from a medicine storage tank to an upstream side or a downstream side of the recirculation blower. 6. Exhaust gas treatment equipment.
入する前記迂回路を設けて、この迂回路の途中に再循環
送風機が配設されていると共に、この再循環送風機の上
流側もしくは下流側に、薬剤貯槽から所定量の薬剤が供
給されるように構成されている請求項５又は６の排ガス
処理設備。9. The detour for introducing the medicine is provided on the upstream side of the dust collecting means, and a recirculation blower is provided in the middle of the detour, and an upstream of the recirculation fan is provided. The exhaust gas treatment equipment according to claim 5 or 6, wherein a predetermined amount of the medicine is supplied to the downstream from the medicine storage tank.
Priority Applications (1)
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|---|---|---|---|
| JP2000337735A JP3807717B2 (en) | 2000-11-06 | 2000-11-06 | Exhaust gas treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000337735A JP3807717B2 (en) | 2000-11-06 | 2000-11-06 | Exhaust gas treatment method |
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| Publication Number | Publication Date |
|---|---|
| JP2002136840A true JP2002136840A (en) | 2002-05-14 |
| JP3807717B2 JP3807717B2 (en) | 2006-08-09 |
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ID=18813070
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|---|---|---|---|
| JP2000337735A Expired - Fee Related JP3807717B2 (en) | 2000-11-06 | 2000-11-06 | Exhaust gas treatment method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361040A (en) * | 2001-06-12 | 2002-12-17 | Takuma Co Ltd | Control method of waste gas treatment and its control mechanism |
| JP2005230657A (en) * | 2004-02-18 | 2005-09-02 | Ebara Engineering Service Co Ltd | Treatment method for incineration fly ash and treatment agent |
| JP2008264662A (en) * | 2007-04-19 | 2008-11-06 | Takuma Co Ltd | Method and apparatus for treating exhaust gas |
| JP2018040499A (en) * | 2016-09-05 | 2018-03-15 | 株式会社Ｉｈｉ環境エンジニアリング | Exhaust gas treatment equipment |
| CN108671715A (en) * | 2018-05-11 | 2018-10-19 | 南京师范大学 | A kind of coal-fired flue-gas sulfur trioxide removing means and its application method and application |
| CN109622204A (en) * | 2018-11-12 | 2019-04-16 | 南京环境再生能源有限公司 | A kind of garbage burning factory fume treatment sodium bicarbonate flouring technology |
-
2000
- 2000-11-06 JP JP2000337735A patent/JP3807717B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361040A (en) * | 2001-06-12 | 2002-12-17 | Takuma Co Ltd | Control method of waste gas treatment and its control mechanism |
| JP2005230657A (en) * | 2004-02-18 | 2005-09-02 | Ebara Engineering Service Co Ltd | Treatment method for incineration fly ash and treatment agent |
| JP2008264662A (en) * | 2007-04-19 | 2008-11-06 | Takuma Co Ltd | Method and apparatus for treating exhaust gas |
| JP2018040499A (en) * | 2016-09-05 | 2018-03-15 | 株式会社Ｉｈｉ環境エンジニアリング | Exhaust gas treatment equipment |
| CN108671715A (en) * | 2018-05-11 | 2018-10-19 | 南京师范大学 | A kind of coal-fired flue-gas sulfur trioxide removing means and its application method and application |
| CN109622204A (en) * | 2018-11-12 | 2019-04-16 | 南京环境再生能源有限公司 | A kind of garbage burning factory fume treatment sodium bicarbonate flouring technology |
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|---|---|
| JP3807717B2 (en) | 2006-08-09 |
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