JP5514742B2 - Flushing dust removal and purification equipment for polluted gases - Google Patents

Flushing dust removal and purification equipment for polluted gases Download PDF

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JP5514742B2
JP5514742B2 JP2010544857A JP2010544857A JP5514742B2 JP 5514742 B2 JP5514742 B2 JP 5514742B2 JP 2010544857 A JP2010544857 A JP 2010544857A JP 2010544857 A JP2010544857 A JP 2010544857A JP 5514742 B2 JP5514742 B2 JP 5514742B2
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water
dust removal
exhaust gas
tank
duct
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京正 上原
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京正 上原
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/021Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2247/00Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D2247/04Regenerating the washing fluid
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents

Description

【技術分野】
【0001】
本発明は、焼却設備や工場などの煙突から排出される排煙や悪環境部から出る汚染ガス(排ガス)を水洗式に除塵浄化する方法並びに装置に関する。
【背景技術】
【0002】
自動車などのエンジンから排出される排気ガス並びに焼却設備や工場などの煙突から排出される排煙による大気汚染を防止するために各種の対策がなされているが、本発明の発明者は、特許文献1や特許文献2に記載のように、袋状のフィルターでエンジンの排気ガス中の粒子や粉塵を捕捉する装置を提案し、特許文献3では、工場や焼却炉などの煙突から排出される排煙を袋状のフィルター中に導入して集塵する装置を提案した。
【先行技術文献】
【特許文献】
【0003】
【特許文献1】特開2000−227020
【特許文献2】特開2001−140629
【特許文献3】特願2007−342006
【発明の概要】
【発明が解決しようとする課題】
【0004】
しかしながら、特許文献1〜3記載のように、袋状のフィルター中に排ガスを導入して集塵する装置は、集塵した袋状フィルターを洗浄再生する負担が大きく、また目詰まりしたフィルターを頻繁に交換する必要もあり、経済的、効率的とは言えない。
また、各種粉塵などで汚染された悪環境を浄化すべく、各種の汚染物を含む汚染ガスを各種のフィルターで濾過する技術が知られているが、微細な汚染物質を濾過するにはフィルターが目詰まりし易く、頻繁に交換する必要があり、不経済である。
本発明の技術的課題は、このような問題に着目し、フィルターの交換や洗浄再生といったデメリットを水洗手法によって容易に解決することにある。
【課題を解決するための手段】
【0005】
本発明の技術的課題は次のような手段によって解決される。請求項1は、1以上の散水手段および/又は水しぶき発生手段を用いて、散水および/又は水しぶきを発生させ、その中を排ガスが水平方向に流れる除塵ダクト装置である。
そして、図4のように1又は複数の多孔板又は網体を、前記除塵ダクトの左右の側壁面から離して立てて、側壁から飛散した散水は、最寄りの多孔板や網体に衝突して水しぶきを発生し、衝突しないで通過した散水は、次の多孔板や網体に衝突して水しぶきを発生させる。同様な原理で、水平方向の上下にも多孔板又は網体を配設して、上下方向の散水によって水しぶきを発生させる。
さらに、図3のように立てて又は斜めに設けた多孔板又は網体22、23を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の前後両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する構成としたことを特徴とする汚染ガスの除塵浄化装置である。
【0006】請求項2は、1以上の散水手段および/又は水しぶき発生手段を用いて、散水および/又は水しぶきを発生させ、その中を排ガスが水平方向に流れる除塵ダクト装置である。
そして、除塵ダクトの中央に供給された水を放射状に散水する水車状の回転羽根車29を図5のように設け、その回転時の遠心力で除塵ダクトの内壁に放射状に散水すると共に衝突時に水しぶきを発生させる構造とする。
さらに、図3のように立てて又は斜めに設けた多孔板又は網体22、23を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の前後両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する構成としたことを特徴とする汚染ガスの除塵浄化装置である。
【0007】請求項3は、前記除塵ダクトの下部に水槽を設けて、水槽の水面位置に設けたオーバーフロー堰からオーバーフローさせることによって、前記水槽中の水面を一定レベルに維持する構成としたことを特徴とする請求項1又は請求項2に記載の汚染ガスの除塵浄化装置である。
【0008】請求項4は、除塵ダクトを塞ぐように設けた多孔板および/又は網体をその面方向におよび/又はその面と垂直方向に振動させる構造を特徴とする請求項1、請求項2又は請求項3に記載の排気ガスの除塵浄化装置である。
【0009】請求項5は、前記多孔板又は網体の前後両面に洗浄水を給水する散水管は、除塵ダクトと直角方向に配管されていて、1列のシャワー孔から水カーテン状に散水可能となっていることを特徴とする請求項1、請求項2、請求項3又は請求項4に記載の排気ガスの除塵浄化装置である。
【0010】請求項6は、前記水槽の底部をV状又は坂状に傾斜させて次第に狭くすると共に、その谷部にスリットを開けて、スライド板を上下にスライド調節することで、前記スリットを開け閉めし、開度を調節できるように構成してなる請求項3から請求項5までのいずれかに記載の排気ガスの除塵浄化装置である。
【0011】請求項7は、前記のように水の作用によって除塵浄化された後の排ガスの流出側に脱臭手段を設けて脱臭し、又は無害化処理手段を設けることを特徴とする請求項1から請求項6までのいずれかに記載の汚染ガスの除塵浄化装置である。
【0012】請求項8は、水槽に供給する浄化水又は水槽中の槽水に洗剤又は界面活性剤を添加する手段を設けることによって、油脂性の汚染物質を水に吸着し捕捉し易くすることを特徴とする請求項3から請求項7までのいずれかに記載の汚染ガスの除塵浄化装置である。
【0013】請求項9は、前記の除塵ダクトを並列に2以上併設した構造とすることを特徴とする請求項1から請求項8までのいずれかに記載の汚染ガスの除塵浄化装置である。
【0014】請求項10は、排ガスで汚れた槽水を、フィルターを通して浄化した後に、給水管に戻して循環させ、再度排ガスの除塵浄化に使用する構成であることを特徴とする請求項3から請求項9までのいずれかに記載の汚染ガスの除塵浄化装置である。
【0015】請求項11は、散水手段および/又は水しぶき発生手段への給水管は、除塵ダクトの方向又は除塵ダクトの方向に対し直交する方向に配管してあることを特徴とする請求項1から請求項10までのいずれかに記載の汚染ガスの除塵浄化装置である。
【0016】請求項12は、1以上の散水手段および/又は水しぶき発生手段を用いて、散水および/又は水しぶきを発生させ、その中を排ガスが水平方向に流れる際に、
前記除塵ダクトの中央に供給された水を放射状に散水する水車状の回転羽根車を図5のように設け、その回転時の遠心力で除塵ダクトの内壁に放射状に散水すると共に衝突時に水しぶきを発生させる。
又は、図4のように前記除塵ダクトの左右の側壁面から離して多孔板又は網体を立てて、側壁から飛散した散水を衝突させて水しぶきを発生させ、同様な原理で、水平方向の上下にも多孔板又は網体を配設して、上下方向の散水を衝突させる方法で水しぶきを発生させる。
さらに、立てて又は斜めに設けた多孔板又は網体を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する汚染ガスの除塵浄化方法である。
【0017】請求項13は、前記の方法で排ガスの除塵浄化が行われる際に、
排ガスの除塵浄化に使用した後の水が流入する水槽からオーバーフローした水面浮遊物および/又は水槽若しくは該水槽から沈殿物が供給される汚泥槽の下部に堆積した沈殿物を回収して、接着手段と混合して固めることを特徴とする請求項12に記載の汚染ガスの除塵浄化方法である。
【発明の効果】
【0018】請求項1のように、1又は複数の多孔板又は網体を、除塵ダクトの左右の壁面から離して立てて、側壁から飛散した散水は、最寄りの多孔板や網体に衝突して水しぶきを発生し、衝突しないで通過した散水は、次の多孔板や網体に衝突して水しぶきを発生し、同様な原理で、水平方向の上下にも多孔板又は網体を配設して、上下方向の散水によって水しぶきが発生することは、段落「0046」に明記のとおりである。
また、立てて又は斜めに設けた多孔板又は網体を、排ガスが水平方向に流れる除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する構成は、段落「0047」に明記のとおりである。
【0019】請求項2のように、排ガスが水平方向に流れる除塵ダクトの中央に供給された水を放射状に散水する水車状の回転羽根車を設け、その回転時の遠心力で除塵ダトの内壁に放射状に散水すると共に衝突時に水しぶきを発生させる構造とすることで、排ガス中の汚染物質を水に吸着させることもできることは、段落「0052」に明記されている。
また、立てて又は斜めに設けた多孔板又は網体を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する構成は、段落「0047」に明記のとおりである。
【0020】請求項3のように、前記除塵ダクトの下部に水槽を設けて、水槽の水面位置に設けたオーバーフロー堰からオーバーフローさせることによって、前記水槽中の水面を一定レベルに維持することは、図4に示すとおりである。
【0021】請求項4のように、除塵ダクトを塞ぐように設ける多孔板および/又は網体をその面方向におよび/又はその面と垂直方向に振動させる構造により、常時自動的に目詰まりを防止でき、またより効果的に排気ガス中の汚染物質を捕捉できることは、段落「0048」に記載のとおりである。
【0022】請求項5のように、両面に洗浄水を給水する散水管24は、除塵ダクトと直角方向に配管されていて、1列のシャワー孔から水カーテン状に散水可能となっているので、多孔や網目が目詰まりしないように、常時洗浄していることは段落「0047」で説明のとおりである。
【0023】請求項6のように、前記水槽の底部をV状又は坂状に傾斜させて次第に狭くすると共に、その谷部にスリットを開けて、沈殿物10が押し出される構造にしてある。また、スライド板を上下にスライド調節することで、前記スリットを開け閉めし、開度を調節できる構成にしたので、段落「0051」に明記のようにスリット26から流出した汚物を導出するドレン管11の蛇口を操作して汚物の排出を制御できる。
【0024】請求項7のように、前記のように水の作用によって除塵浄化された後の排ガスの流出側に脱臭手段を設けて脱臭し、又は無害化処理手段を設けてあるが、段落「0053」に明記のように排出側に脱臭手段28を設けて脱臭することが有効である。
【0025】請求項8のように、水槽に供給する浄化水又は水槽中の槽水に洗剤又は界面活性剤を添加する手段を設けることによって、油脂性の汚染物質を水に吸着し捕捉し易くすると、段落「0053」に明記のように汚染物質を水により確実に捕捉可能となる。 【0026】段落「0054」に明記のように、排ガスや排煙が大量に排出される場合は、図3の単一ダクトだけでは処理不能となるので、請求項9のように除塵ダクトを並列に2以上併設して、図3のダクト処理室Rを並列に2以上併設して図6のような構造を採用することによって、大量処理に対応できる。
【0027】請求項10のように、排ガスで汚れた槽水を、フィルターを通して浄化した後に、給水管に戻して循環させ、再度排ガスの除塵浄化に使用する構成は、段落「0053」に明記のとおりである。
【0028】請求項11のように、散水手段および/又は水しぶき発生手段への給水管は、除塵ダクトの方向又は除塵ダクトの方向に対し直交する方向に配管してあることは、段落「0052」に明記のとおりである。
【0029】請求項12のように、排ガスが水平方向に流れる除塵ダクトの中央に供給された水を放射状に散水する水車状の回転羽根車を設け、その回転時の遠心力で除塵ダクトの内壁に放射状に散水すると共に衝突時に水しぶきを発生させて、排ガス中の汚染物質を水に吸着させることは段落「0052」に明記のとおりである。
又は除塵ダクトの左右の壁面から離して多孔板又は網体を立てて、側壁から飛散した散水を衝突させて水しぶきを発生させたり、水平方向の上下にも多孔板又は網体を配設して、上下方向の散水を衝突させる方法で水しぶきを発生させることは、段落「0046」に明記のとおりである。
さらに、立てて又は斜めに設けた多孔板又は網体を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄することは、図3のとおりである。
【0030】請求項13のように、前記の方法で排ガスの除塵浄化が行われる際に、排ガスの除塵浄化に使用した後の水が流入する水槽からオーバーフローした水面浮遊物および/又は水槽若しくは該水槽から沈殿物が供給される汚泥槽の下部に堆積した沈殿物を回収して、接着手段と混合して固めるため、回収した汚染物質をコンクリートブロックなどとして再利用でき、資源の有効利用が可能となる。
【図面の簡単な説明】
【0031】
【図1】排気ガスが無数の気泡となって水中を浮上する浄化方法の実施形態である。
【図2】排気ガス中の汚物を水滴で捕捉する浄化方法の実施形態である。
【図3】排気ガスがダクト中を水平移動する間に下部の水槽中に汚染物質を捕捉する浄化
方法の実施形態である。
【図4】図3のA−A断面図である。
【図5】他の実施形態における、図3のA−A断面図である。
【図6】大型ダクトを示す図3のA−A方向断面図である。
【発明を実施するための形態】
【0032】
次に本発明による排煙の水洗式除塵浄化方法が実際上どのように具体化されるか実施形態を説明する。図1は本発明の第1実施形態で、排気ガスが無数の気泡となって水中を浮上通過する浄化方法であり、気泡を分散させる分散手段を有している。
球状又は卵を逆さに立てた形状の水槽1の水面Sの上側の空間に1本以上の散水管2を設けて、多数の散水穴からシャワー状に水面Sに向けて散水しかつ給水する。水面Sと散水管2との間には、パンチングメタルなどの多孔板又は網体3を水平に配置することもできる。なお、排ガスを排出するプラント装置などの規模や種類などによっては、散水管に限らず、散水機器などの散水手段であれば足りる。
【0033】
水槽1中には、気泡を分散させる分散手段として、多孔板や網体から成る上部分散手段4と下部分散手段5と中間分散手段6を有している。下部分散手段5と水槽底部との間には、排気ガス排出器7を設けて、煙突その他の排気ガス排出部にダクト8で連結してある。排気ガス排出器7の上面は、多孔板からなる円板9で塞いで、排気ガスが多数の孔から排出され、水槽1中の槽水W中を浮上し通過可能となる。底板には水抜き孔を開けておいてもよい。排気ガス排出器7は、水槽内に排気ガスを広く分散して発生できるように、例えば皿状ないし偏平状が好ましいが、これら以外の形状も可能である。なお、ダクト8をそのまま導入したり筒体を用いて、その先端を任意の方向に斜めにカットした形状でも、皿状排出器7に代えることもできる。
水槽1は、水面Sを一定レベルに維持するために、オーバーフロー堰Lを有しているため、散水管2で水槽1中に給水し溜めると、水面Sの余分な水は堰Lを越えて排水されるので、常に一定レベルの水面Sが維持される。
【0034】
いま、槽水Wが溜まった状態で、排煙ダクト8中を下降して、水槽1の底側の排気ガス排出器7の多孔板9から多数の気泡となって排出された排気ガスは、槽水W中を浮上通過して、水面S上に浮上し、排気ダクトdや煙突から大気中に排出される。
槽水W中には複数の分散手段4、5、6が有るので、多孔板9から浮上した多数の気泡は、下段の分散手段5を通過して無数の気泡に分散されて浮上上昇し、中段の分散手段6で更に気泡分散されてから槽水W中を浮上上昇し、最後に上段の分散手段4を通過することにより、気泡が次第に細分化されながら浮上上昇して、水面Sの上に浮上する。従って、このように排気ガスが何度も気泡分散されながら、槽水W中を浮上し通過するので、この間に排ガス中の塵埃は槽水W中に捕捉され、親水性の汚染物質は槽水中に容易にかつ確実に捕捉される。
【0035】
槽水中に捕捉された塵埃などの汚染物質は、比重が大きい部分は水槽の底に沈殿して堆積するので、沈殿汚物10となって、ドレン管11から排出される。比重が小さく水面で浮遊する成分や排ガス気泡と一緒に水面に浮上した泡やその付着汚染物質は、堰Lを越えてオーバーフロー排出される。
従って、水面Sの浮遊物や浮上泡が常にオーバーフローするように、散水管2からは常時最低量の散水が行われる。また、水面Sから浮上した排気ガスに異物などが残存している場合は、この散水時に槽水W中に叩き落とされる。散水が多孔板や網体3に衝突して水しぶきが発生すると、水しぶきと浮上排気ガス中の異物などと合体して、水面Sに流れ込む。従って、水面Sから浮上した後も浄化作用が行われる。
【0036】
各気泡分散手段4、5、6は、加振装置によって例えば水平方向に微振動させると、自力で浮上上昇する各排気ガス気泡をさらに細分化できる。以上のように浮上気泡を分散化したり細分化することによって、排気ガスのより多くの部分が槽水Wや散水や水しぶきと接して、より確実に効果的に汚染物質が捕捉吸着され、浄化される。
加振手段は容易に実現可能であって、例えば各気泡分散手段4、5、6に直径方向に設けたリブに開けた非真円孔に、回転軸12に固設した偏心カムcを挿入した状態で、モータMで回転軸12を連続回転させると、反対側の引っ張りコイルバネsに抗して、各気泡分散手段4、5、6がリブの方向に往復微振動する。回転軸12と水槽容器との間はゴムなどの弾性体からなるOリングを介在させることで水漏れ防止可能である。
また、各気泡分散手段4、5、6の外周に取付けたリング状のフレームを、水槽容器の内面に弾性体のパッキンやスペーサで取付け支持することによって、容易に微振動可能となる。加振手段は、図示構成以外でも可能なことは言うまでもない。なお、気泡分散手段4、5、6には大きな荷重が作用するわけではないので、その取付け用の弾性パッキンやスペーサは、気泡分散手段4、5、6の全周に設けなくても、3〜4か所以上でも足りる。
【0037】
以上のように、槽水の下部に排気ガスを導入して浮上させるので、比重の大きな沈殿性の異物を水槽底部に集積させて排除する場合に好適な手法である。これに対し、図2は、槽水Wの水面Sの上側に排気ガスを導入して、汚染物を槽水W中に叩き落とす手法であるから、水面Sで浮遊し易い軽い汚物の除去に有効な手法である。
図2の水槽1中には、水面Sより上側の空間に、散水用の散水管2と噴霧用の噴霧管14を設け、両者間に多孔板又は網体15を設け、前記散水管2の上側に終段フィルターとなる細目の網体16を配設してある。
水槽1の水面Sを一定レベルに維持するために、オーバーフロー堰Lを設ける点は、図1の場合と同様である。
【0038】
いま、散水管2で給水し、槽水Wを溜めた状態において、排気ダクト8で水面Sの上側の空間に導入された排ガスは、排出器7の多孔板9の多数の孔から流出して、噴霧管14から噴出した無数の霧状の微水滴と結合を繰り返し、次第に肥大化する。その結果、下降して来たシャワー状の洗浄水で叩き落とされて水面S中に混入する。なお、排出器7の底板は、水抜き孔を開けたり、多孔板にしてもよい。
このようにして、洗浄水に捕捉されて沈殿した汚物10は、ドレン管11から流出し、水槽1中から排出され処理される。水槽1内でドレン管11の上端を開閉する弁手段を設けて、タイマーなどで自動的に開閉制御したり、弁手段の開閉信号を外部から手動で送信して開閉することができる。
あるいは、ドレン管11に蛇口などの開閉手段を設けておいて、汚物10が水槽底部に溜まり過ぎないように制御できる。このとき、汚物10と水が適当に混在している方が流動性が良いので、常時混在状態で流出するように、流出汚物を時々監視しながら、蛇口操作するのもよい。
【0039】
噴霧と結合する機会が無く、上昇した排気ガスは、散水管2による散水で常時濡れている多孔板や網体15の微細孔や網目を通過上昇する際に濡れて汚染物や粒子などが捕捉され、散水管2による散水で洗い落とされる。
また、多孔板や網体3、15に散水が勢いよく衝突すると、水しぶきとなって霧状に浮遊するので、残存している汚染物や粒子などと遭遇して肥大化し、次第に重くなって下降し、かつ散水で叩き落とされて、より確実に浄化される。
散水管2の上に配設されている網体16は、網目か最も細かく、しかも水しぶきなどで湿気ているため、異物や微粒子などの最後の除去が行われる。この網体16は目詰まりしてくるが、水槽1内の各部を保守点検する際に、シャワー洗浄すれば、容易に再生使用可能となる。あるいは、終段網体16の上にも散水管2を配置して、常時又は時々散水洗浄してもよい。なお、前記の各気泡分散手段4、5、6や各網体3、15、16、多孔板を増減したり、形状を変えるなど、最適の条件を採用できる。
【0040】
以上の洗浄水による噴霧や散水、多孔板又は網体の通過によって異物や微粒子が下部の槽水W中に叩き落とされて沈殿し、集積汚物10となる。また、水面S上で浮遊する軽い部分は、堰Lを乗り越えてオーバーフローし、排水と共に流出し、水槽1中から排除され処理される。
図1、2の多孔板や網体4〜6、15、16に設けた直径方向のリブと平行に図1の回転軸12を設けて、水槽の外側のモータで回転させると、偏心カムcで多孔板や網体4〜6、15、16を面と垂直方向に加振して、目詰まりしている水分や異物、微粒子などを叩き落とせるので、常時自動的に目詰まりを防止できる。
なお、多孔板や網体4〜6、15、16は、波形やプリーツ状に形成すると、面積を拡大できる。網体は、必ずしも縦横に編んだ網体に限らず、合成樹脂の一体成型の網状でも、不織布状も可能である。
【0041】
水槽1は卵形であるが、球形や円筒形、箱型なども可能であり、形状は特に限定されない。内部の水面Sの下部に攪拌羽根を挿入して、槽水Wの水流を発生させたり対流状に循環させたり、攪拌もできる。
分散手段4〜6や多孔板又は網体15、16は、洗浄して繰り返し使用したり、交換できることは言うまでもない。分散手段4〜6は、メンテナンス時に槽水Wを抜いた状態で、散水管2で散水すると、分散手段4〜6の目詰まりを容易に清掃し再生できる。
図2のように、水槽1の最大直径の部分や構造上最適な位置で上下に2分割して、連結手段13を設けておけば、内部を開放して内部の保守点検や清掃は容易に可能である。ただし、ドアや蓋板などで開閉される窓孔を水槽1に設けて、内部を覗いたり入り込んで保守点検できるようにしてもよい。
【0042】
図1、図2において、槽水Wをフィルターfでろ過すると共に、加圧用のポンプC、C1、C2で加圧して散水管2から散水したり噴霧管14で噴霧すると、オーバーフロー動作などで消耗するので、水道管P、P1、P2から常時又は時々、新たな洗浄用水を補充する。なお、オーバーフロー動作に限らず、蒸発したり、水しぶきとなって排気ダクトdや煙突から大気中にも流出し消耗する。
また、水資源が豊富で、必ずしも水洗後の槽水Wを循環させて有効利用する必要が無い場合は、水道管P、P1、P2から常に清浄な新たな水を導入して散水することが好ましい。
【0043】
洗浄水を有効利用する場合、オーバーフロー堰Lをオーバーフローした汚水も利用できる。この場合、図2のように、別置きの沈殿槽31にオーバーフロー水を溜めて、浮遊物はオーバーフロー堰Lからオーバーフローさせ、比重の大きな汚物は槽底に沈殿させて、ドレン管11から排出する。従って、沈殿槽31中の上澄みWを、フィルターf経由で散水管2に供給する。沈殿槽31の上に網体Nを配置して、その上から水槽1のオーバーフロー水を落とすと、浮遊物は網体Nで分離して排除できる。
なお、沈殿槽31のオーバーフロー水は、網体nでろ過してから、フィルターf経由で散水管2に供給することもできる。
【0044】
図2の水槽1は、その底部に槽水Wを溜めるのでなく、別置きの沈殿槽31で代用することもできる。この場合は、水槽1のドレン管11を太くして、槽水Wが水槽1中の溜まらずに、洗浄水が直ちに円滑に沈殿槽31側に流下可能にする。その結果、水槽1中の清浄水はすべて沈殿槽31に溜まって、浮遊物はオーバーフロー堰Lからオーバーフローし、比重の大きな汚物10は沈殿して、ドレン管11から排出される。
沈殿槽31中の槽水Wは、フィルターf経由で散水管2や噴霧管14に供給される。このように、沈殿槽31を代用する場合は、水槽1にはオーバーフローLも不要となる。
なお、別置きの沈殿槽31を代用する場合は、水槽1は洗浄専用となり、槽水Wは溜まらないが、便宜上「水槽」に含まれるものと定義する。
【0045】
図1、図2は、排煙や排ガスが、散水や噴霧、水しぶきの中や分散手段4〜6や多孔板又は網体15、16中を浮上し上昇する間に水洗式に除塵浄化されるのに対し、図3は、トンネル状のダクトDの中Rを排気ガスが水平方向に排出される間に、下部の水槽中に異物や微粒子、油脂類などの汚染物質が取り込まれる手法である。
図3における除塵ダクトDは、図4のように断面形状が四角のトンネル状であり、図の左端に排煙や排気ガスを導入し、右端から大気中に排出する。
除塵ダクトDの外側に給水管17を設けて、除塵ダクトD内の散水管に給水し、散水孔Hから散水する。図4のように、各散水孔(ノズル)H…は、天井から下向きに、左右の側壁から中央向きに、底側から天井向きに、というように各方向から散水できる。矢印のように斜めから中心向きに散水することもできる。
なお、除塵ダクトDの断面形状は、図4のような四角形とは限らず、円形や楕円形、他の多角形状も可能である。
【0046】
図3において、矢印a1…は散水方向であり、〇印は紙面から手前に向かう散水方向、×印は手前から紙面向きの散水方向である。これらの散水方向からも明らかなように、各壁部からの散水は、互いに正面衝突しないように、排ガスの通過方向にずらして配設してあるので、散水の勢いが強いと、対向する壁面に衝突して、水しぶきを発生させる。
図4のように、1又は複数の多孔板又は網体18、19のように、壁面から離して立てると、側壁から飛散した散水は、最寄りの多孔板や網体18、19に衝突して水しぶきを発生し、衝突しないで通過した散水は、次の多孔板や網体19、18に衝突して水しぶきを発生する。
同様な原理で、水平方向にも多孔板又は網体20、21を配設すると、上下方向の散水によって水しぶきを発生させることもできる。
【0047】
除塵ダクトDの底部には水槽を形成して槽水Wを常時溜めておき、しかも堰Lを設けて、水面を常時オーバーフローさせる。底部側の散水ノズルHは、槽水W中に配管した給水管17から、上向きに噴出するように設置されている。
図3において立てて又は斜めに設けた多孔板又は網体22、23は、除塵ダクトDの煙道を塞ぐように設けてあり、しかも全体が常に濡れるように上部の散水管24で洗浄水を給水して、多孔や網目が目詰まりしないように、常時洗浄している。従って、この散水管24は、紙面と直角方向に配管されていて、多数の1列のシャワー孔から水カーテン状に散水可能となっている。
【0048】
多孔板又は網体22、23の中央を通るリブと平行に図1の回転軸12を設けて、除塵ダクトDの外側のモータで回転させると、偏心カムcで多孔板や網体22、23を面と垂直方向に加振して、目詰まりしている水分や汚染物質を叩き落とせるので、常時自動的に目詰まりを防止できる。
図1と同様にして、多孔板又は網体22、23の中央を通るリブをその面方向に微振動させることによって、多孔や網目を通過する気体を微細化してから、処理室R中の散水や水しぶきと遭遇させ、互いに混合すると、より効果的に排気ガス中の汚染物質を捕捉できる。
【0049】
いま、図3において、図の左側から排煙などの排気ガスが流入すると、除塵ダクトD内で上下左右や斜め方向から噴出する散水によって、排気ガス中の汚染物質が叩き落とされて、下部の槽水W中に捕捉される。また、多孔板又は網体を18、19、20、21が有る場合は、これらに散水が衝突して発生する水しぶきと遭遇して肥大化し重くなるので、槽水W中に容易に叩き落とされる。さらに、除塵ダクトDを塞ぐように斜めに又は鉛直に立てた状態の多孔板又は網体22、23は濡れているので、多孔や網目を排気ガスが通過する際に異物や微粒子、油脂類が水分に吸着され、かつ上側のシャワー水で洗い流されて、下部の槽水W中に合流する。
【0050】
図示例は、斜めの網体23を挟んだ前後2段の処理室R中を排ガスが通過するが、処理室は、1段だけでも、3段以上でも可能である。
また、最終の網体22を前記のように面と直角方向に微振動させて水分を叩き落として、目詰まりの無い状態とし、その直後に隙間gをおいて水カーテンWCを薄い膜状に形成すると、網目を通過したビーム状の空気流が水カーテンWCを通過する際に最終の水洗浄が行われる。
水カーテンWCの真上には、紙面と直角方向の配管30を配置して、紙面と直角方向のスリットから水流を下降させることによって、水カーテンWCを形成している。
最終の網体22は、前記のように、その面方向にも微振動させると、網体22通過後の汚染物質と水カーテンWCの水との混合がより効果的となる。
【0051】
このような動作の繰り返しによって、排ガス中の汚染物質は水槽の槽水W中に捕捉され、水面Sで浮遊する成分や泡は、堰Lをオーバーフローして、除塵ダクトDの外に排出され処理される。
水槽の底に沈殿した成分は、図4のように、汚泥槽25中に回収される。図示のように、水槽の底部を左右の傾斜板でV字状に形成すると、その谷部に沈殿物10が集積するので、谷底部にスリット26を開けておくと、沈殿物10がスリット26から押し出される。スライド板27を調節してスリット26を開け閉めし、開度調節できる。なお、V字状にしないで、片方だけの傾斜板を採用することも可能である。スリット26はダクトと同じ方向である。
スリット26から流出した汚物を導出するドレン管11を図1、図2のように設けて、流出汚物の水との混在状態をチェックしながら、蛇口を操作して汚物の排出を制御することもできる。
【0052】
図3における給水管17はダクト方向に配管されているが、図5のようにダクト方向に対し直交する方向に配管することもできる。
また、ダクト内の浄化処理室Rの中央で、水道管などで中央に供給された水を放射状に散水する水車状の回転羽根車29をモータで高速回転させることによって、遠心力でダクト内壁に放射状に散水すると共に衝突時に水しぶきを発生させ、処理室R内を通過する汚染ガス中の汚染物質を水に吸着させることもできる。
【0053】
図3、4の水槽中の槽水Wも、フィルターfを通して浄化した後に、給水管17に戻して循環させ、何度も繰り返し使用する。
汚染物質を洗浄したり水槽に供給する浄化水又は水槽中の槽水に洗剤や界面活性剤を添加することにより、油脂成分などを吸着し易くすると、汚染物質を水により確実に捕捉可能となる。
以上の実施形態において、堰Lからオーバーフローした浮遊物や水槽下部から回収した沈殿物に水分が多量に残っている場合は、フィルターなどで浄化してから循環させ、散水や水槽に再利用できる。
本発明による排煙や排気ガスの導入部には、加圧用のファンF1を設けて、除塵浄化部に押し込み、その排出側には、シロッコファンなどから成る吸引用のファンF2を設けて吸引するのが効果的である。
なお、排出側に木炭や化学的な脱臭剤などの脱臭手段28を設けて脱臭することが有効である。
【0054】
排ガスや排煙が大量に排出される場合は、図3の単一ダクトだけでは処理不能となるので、図6のように、図3のダクト処理室Rを並列に2以上併設する構造を採用することによって、大量処理に対応できる。
各矢印は、散水管から散水又は噴水される水流の方向である。
【0055】
水槽の堰Lからオーバーフローした水面浮遊物や水槽底部に堆積した沈殿物などの汚染物質は、その始末に困ることが多いが、本発明の場合は、有害物が含まれている場合は化学剤で無害化処理してから、セメントと混合してコンクリート固化するので、コンクリートブロックに再生したりして、建築資材や埋め立て、擁壁などとして再利用可能となる。
回収した汚染物質が水分過多の場合は、焼却炉などから発生した焼却灰や焼却残渣などを加えると、セメントと配合すの際の水分調節が容易になる。
以上の実施形態において、多孔板や網体に散水を衝突させて水しぶきを発生する手段を開示したが、市販の噴霧ノズルを代用することもできる。ただし、高圧を要するため、加圧ポンプが必要となる。
【産業上の利用可能性】
【0056】
以上のように、本発明によると、槽水中を排ガスが気泡状態で浮上通過しおよび/又は水しぶき中を排気ガスが通過しおよび/又は水で濡れた多孔板および/又は網体を排ガスが通過することによって汚染物質が除塵浄化されるので、従来のようなフィルターの交換や洗浄再生といったデメリットが容易に解決され、各種排ガス中の汚染物質を効果的に水で捕捉できると共に、回収や無害化処理も容易で、作業環境を悪化させる恐れもない。
【符号の説明】
【0057】
1水槽
W槽水
S水面
L堰
2散水管
3多孔板又は網体
4上部分散手段
5下部分散手段
6中間分散手段
7排気ガス排出器
8排ガス流入ダクト
9多孔板
fフィルター
C・C1・C2加圧用のポンプ
d排気ダクト
c偏心カム
10沈殿汚物
11ドレン管
12回転軸
13連結手段
14噴霧管
15多孔板又は網体
16細目の網体
D除塵ダクト
R水洗処理室
17給水管
H散水孔
18・19・20・21多孔板又は網体
22、23鉛直又は斜めの多孔板又は網体
24散水管
WC水カーテン
25汚泥槽
26スリット
28脱臭手段
29回転羽根車
30配管
31沈殿槽
【Technical field】
      [0001]
The present invention relates to a method and apparatus for removing dust from a flue gas discharged from a chimney of an incineration facility or a factory and a polluting gas (exhaust gas) emitted from a bad environment in a flushing manner.
[Background]
      [0002]
Various measures have been taken to prevent air pollution caused by exhaust gas discharged from engines such as automobiles and smoke emitted from chimneys of incinerators and factories. 1 and Patent Document 2, a device that captures particles and dust in engine exhaust gas with a bag-like filter is proposed. In Patent Document 3, exhaust discharged from a chimney such as a factory or an incinerator is proposed. A device for collecting dust by introducing smoke into a bag-like filter was proposed.
[Prior art documents]
[Patent Literature]
      [0003]
[Patent Document 1] JP-A-2000-227020
[Patent Document 2] JP-A-2001-140629
[Patent Document 3] Japanese Patent Application No. 2007-342006
SUMMARY OF THE INVENTION
[Problems to be solved by the invention]
      [0004]
However, as described in Patent Documents 1 to 3, an apparatus that collects dust by introducing exhaust gas into a bag-shaped filter has a large burden of cleaning and recycling the collected bag-shaped filter, and frequently uses a clogged filter. It is not economical and efficient.
In addition, in order to purify the bad environment contaminated with various dusts, etc., a technology for filtering pollutant gas containing various pollutants with various filters is known. It is easily clogged, needs to be replaced frequently, and is uneconomical.
The technical problem of the present invention is to pay attention to such a problem and to easily solve the demerits such as filter replacement and cleaning regeneration by a water washing method.
[Means for Solving the Problems]
      [0005]
The technical problem of the present invention is solved by the following means. Claim 1 includes one or more watering means and / orSplash generation meansGenerate water and / or splashesLetExhaust gas insideIs a dust removal duct device that flows horizontally.
  Then, as shown in FIG. 4, one or more perforated plates or nets are set apart from the left and right side wall surfaces of the dust removal duct, and the water splashed from the side walls collides with the nearest perforated plate or net body. The water spray that has splashed and passed without colliding with it collides with the next perforated plate or netting to generate splash. Based on the same principle, a perforated plate or a net is also provided above and below in the horizontal direction, and splashes are generated by watering in the up and down direction.
  Further, the perforated plates or nets 22 and 23 provided upright or obliquely as shown in FIG. 3 are provided so as to block the dust removal ducts, and the upper exhaust gas inflow side and exhaust gas outflow side so that the whole is always wet. Wash water on both sides before and after cleaning to keep pores and meshes from cloggingDust removal and purification of pollutant gas characterized byapparatusIt is.
      Claim 2 provides one or more watering means and / orSplash generation meansGenerate water and / or splashesLetExhaust gas insideIs a dust removal duct device that flows horizontally.
  Then, a water wheel-like rotary impeller 29 is provided as shown in FIG. 5 to radially spray water supplied to the center of the dust removal duct, and the centrifugal force at the time of rotation causes the water to radially sprinkle on the inner wall of the dust removal duct. A structure that generates splashes.
  Further, the perforated plates or nets 22 and 23 provided upright or obliquely as shown in FIG. 3 are provided so as to block the dust removal ducts, and the upper exhaust gas inflow side and exhaust gas outflow side so that the whole is always wet. Wash water on both sides before and after cleaning to keep pores and meshes from cloggingDust removal and purification of pollutant gas characterized byapparatusIt is.
      Claim 3 provides:A water tank is provided at the lower part of the dust removal duct, and the water surface in the water tank is maintained at a certain level by overflowing from an overflow weir provided at the water surface position of the water tank.The dust-removing and purifying apparatus for polluted gas according to claim 1 or claim 2, wherein
      Claim 4 provides:A structure that vibrates a perforated plate and / or a net provided so as to close a dust removal duct in the surface direction and / or in the direction perpendicular to the surface.Dust removal purification of exhaust gas according to claim 1, 2 or 3apparatusIt is.
      Claim 5 provides:Sprinkling pipes for supplying cleaning water to both the front and rear surfaces of the perforated plate or net are arranged in a direction perpendicular to the dust removal duct, and can be sprinkled in a water curtain form from one row of shower holes.The exhaust gas dust removal purification according to claim 1, 2, 3, or 4.apparatusIt is.
      [0010] Claim 6The bottom of the water tank is gradually narrowed in a V shape or a slope, and a slit is opened in the valley, and the slide plate is slid up and down to open and close the slit and adjust the opening. The structure according to any one of claims 3 to 5, which is configured to be able to be performed.Dust removal purification of exhaust gasapparatusIt is.
      Claim 7The deodorizing means is provided on the outflow side of the exhaust gas after being dedusted and purified by the action of water as described above, or a detoxification processing means is provided. InDedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 8 provides:The oily pollutant is easily adsorbed and captured by water by providing means for adding detergent or surfactant to purified water supplied to the water tank or tank water in the water tank. Any of up to claim 7Dedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 9The structure according to any one of claims 1 to 8, wherein two or more dust removing ducts are arranged in parallel.Dedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 10 provides:The tank water contaminated with the exhaust gas is purified through a filter, returned to the water supply pipe, circulated, and used again for dust removal purification of the exhaust gas.Dedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 11 provides:The water supply pipe to the sprinkling means and / or the spray generating means is piped in the direction of the dust removal duct or in the direction perpendicular to the direction of the dust removal duct.The dust removal purification of the pollutant gas according to any one of claims 1 to 10, whereinapparatusIt is.
      Claim 12 is one or more watering means and / or splashing occurrence.Using meansGenerate water and / or splashesLetExhaust gas insideWhen the flows horizontally,
  As shown in FIG. 5, a water wheel-like rotary impeller for radially spraying water supplied to the center of the dust removal duct is provided as shown in FIG. generate.
  Alternatively, as shown in FIG. 4, a perforated plate or a net is set up away from the left and right side wall surfaces of the dust removal duct, and the water splashed from the side wall is collided to generate splashes. Also, a perforated plate or a net is provided to generate splashes by a method of colliding water sprays in the vertical direction.
  Further, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct, and cleaning water is supplied to both the upper exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. And always wash to prevent clogging of pores and meshesIt is a dust removal purification method of polluting gas.
      Claim 13When dust removal purification of exhaust gas is performed by the above method,
Water flows after being used for dust removal purification of exhaust gasWater surface and / or water tank overflowing from the water tankSludge supplied with sediment from the tankCollect the sediment deposited at the bottom of the tankContactIt is characterized by mixing and solidifying with the wearing meansThe dust removal purification method of the pollutant gas according to claim 12.It is.
【Effect of the invention】
      As in claim 1One or more perforated plates or nets are set apart from the left and right wall surfaces of the dust removal duct, and the water splashed from the side walls collides with the nearest perforated plates or nets to generate splashes and pass without colliding. The sprinkled water collides with the next perforated plate or net and generates splashes, and on the same principle, the perforated plates or nets are also arranged on the top and bottom in the horizontal direction. This is as specified in paragraph “0046”.
  In addition, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct through which the exhaust gas flows in the horizontal direction, and both the upper exhaust gas inflow side and the exhaust gas outflow side are always wet. The structure in which the washing water is supplied to the tank so that the pores and meshes are not clogged at all times is as specified in the paragraph “0047”.
      As in claim 2,A turbine-type rotary impeller that radiates the water supplied to the center of the dust removal duct where the exhaust gas flows horizontally is provided, and the dust is removed by the centrifugal force at the time of rotation.TheIt is specified in paragraph “0052” that the pollutant in the exhaust gas can also be adsorbed by water by using a structure that sprays water radially on the inner wall of the tank and generates splashes at the time of collision.
  In addition, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct, and cleaning water is supplied to both the upper exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. Thus, the structure in which the pores and the mesh are always washed so as not to be clogged is as specified in the paragraph “0047”.
      As in claim 3,As shown in FIG. 4, the water level in the water tank is maintained at a certain level by providing a water tank below the dust removal duct and causing the water tank to overflow from an overflow weir provided at the water surface position of the water tank.
      As in claim 4,Due to the structure in which the perforated plate and / or the net body provided so as to close the dust removal duct is vibrated in the surface direction and / or in the direction perpendicular to the surface, clogging can be automatically prevented at all times and exhaust gas can be more effectively exhausted. The ability to trap contaminants therein is as described in paragraph “0048”.
      As in claim 5,Sprinkling pipes 24 for supplying cleaning water to both sides are arranged in a direction perpendicular to the dust removal duct and can be sprayed in the form of a water curtain from one row of shower holes, so that pores and meshes are not clogged. The constant cleaning is as described in paragraph “0047”.
      As in claim 6,The bottom of the water tank is inclined in a V shape or a slope shape and gradually narrowed, and a slit is opened in the valley portion so that the precipitate 10 is pushed out. In addition, since the slit is opened and closed by adjusting the slide plate up and down and the opening degree can be adjusted, the drain pipe for leading out the filth flowing out from the slit 26 as specified in the paragraph “0051” The discharge of filth can be controlled by operating 11 faucets.
      As in claim 7,As described above, deodorizing means is provided on the exhaust gas outflow side after being dedusted and purified by the action of water, or deodorizing means is provided, but as specified in paragraph "0053" It is effective to provide deodorizing means 28 for deodorization.
      As in claim 8,As described in paragraph “0053”, it is easy to adsorb and capture oily contaminants in water by providing means for adding detergent or surfactant to purified water supplied to the tank or tank water in the tank. In addition, contaminants can be reliably captured by water.       [0026]As specified in the paragraph “0054”, when a large amount of exhaust gas or smoke is discharged, it is impossible to process only with the single duct of FIG. 3, so that two or more dust removing ducts are arranged in parallel as in claim 9. By arranging two or more duct processing chambers R in FIG. 3 in parallel and adopting a structure as shown in FIG.
      As in claim 10,The configuration in which the tank water contaminated with the exhaust gas is purified through a filter, returned to the water supply pipe, circulated, and used again for dust removal purification of the exhaust gas is as specified in paragraph “0053”.
      As in claim 11,It is as specified in paragraph “0052” that the water supply pipes to the watering means and / or the spray generating means are piped in the direction of the dust removal duct or in the direction perpendicular to the direction of the dust removal duct.
      As in claim 12,A turbine wheel-like rotary impeller that radiates water supplied to the center of the dust removal duct where the exhaust gas flows horizontally is provided, and the centrifugal force generated during the rotation causes water to be sprayed radially on the inner wall of the dust removal duct and sprayed during a collision. It is as specified in paragraph “0052” that the pollutant in the exhaust gas is adsorbed by water.
  Or, set up a perforated plate or mesh body away from the left and right wall surfaces of the dust removal duct, and splash water by colliding with water splashed from the side wall, or arrange a perforated plate or net body in the horizontal direction. As described in the paragraph “0046”, the splashing is generated by the method of causing the vertical watering to collide.
  Further, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct, and cleaning water is supplied to both the upper exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. Thus, the constant cleaning so as not to clog the pores and the mesh is as shown in FIG.
      As in claim 13,When exhaust gas dust removal purification is performed by the above method, water after being used for exhaust gas dust removal purification flowsWater surface and / or water tank overflowing from the water tankSludge supplied with sediment from the tankCollect the sediment deposited at the bottom of the tankContactSince it is mixed and solidified with the landing means, the collected pollutants can be reused as concrete blocks and the resources can be used effectively.
[Brief description of the drawings]
      [0031]
FIG. 1 is an embodiment of a purification method in which exhaust gas becomes an infinite number of bubbles and floats in water.
FIG. 2 is an embodiment of a purification method for capturing filth in exhaust gas with water droplets.
Fig. 3 Purification to trap pollutants in the lower tank while exhaust gas moves horizontally in the duct
1 is an embodiment of a method.
4 is a cross-sectional view taken along the line AA in FIG. 3;
FIG. 5 is a cross-sectional view taken along the line AA of FIG. 3 in another embodiment.
6 is a cross-sectional view taken along the line AA of FIG. 3 showing a large duct.
BEST MODE FOR CARRYING OUT THE INVENTION
      [0032]
Next, an embodiment of how the water washing type dust removal purification method of smoke according to the present invention is practically described will be described. FIG. 1 shows a first embodiment of the present invention, which is a purification method in which exhaust gas becomes countless bubbles and floats and passes through water, and has a dispersing means for dispersing bubbles.
One or more sprinkling pipes 2 are provided in the space above the water surface S of the water tank 1 having a spherical shape or an upside-down shape of the water tank, and water is sprayed and supplied from the many water spray holes toward the water surface S in a shower shape. A perforated plate such as punching metal or the net 3 can be horizontally disposed between the water surface S and the water spray pipe 2. It should be noted that depending on the scale and type of the plant apparatus that discharges exhaust gas, water spraying means such as water spraying equipment is not limited to the water spray pipe.
      [0033]
The water tank 1 has an upper dispersion means 4, a lower dispersion means 5, and an intermediate dispersion means 6 made of a perforated plate or a net as dispersion means for dispersing bubbles. An exhaust gas discharger 7 is provided between the lower dispersion means 5 and the bottom of the water tank, and is connected to a chimney or other exhaust gas discharge part by a duct 8. The upper surface of the exhaust gas discharger 7 is closed with a circular plate 9 made of a porous plate, and exhaust gas is discharged from a large number of holes so that it can float and pass through the tank water W in the water tank 1. A drain hole may be formed in the bottom plate. The exhaust gas discharger 7 is preferably, for example, a dish shape or a flat shape so that the exhaust gas can be widely dispersed in the water tank, but other shapes are also possible. It should be noted that the duct 8 can be introduced as it is, or the tip can be cut obliquely in an arbitrary direction using a cylindrical body, or the dish-like discharger 7 can be substituted.
Since the water tank 1 has an overflow weir L in order to maintain the water surface S at a certain level, when water is supplied and accumulated in the water tank 1 with the water spray pipe 2, excess water on the water surface S passes over the weir L. Since the water is drained, the water level S at a certain level is always maintained.
      [0034]
Now, with the tank water W accumulated, the exhaust gas descending in the smoke exhaust duct 8 and discharged from the perforated plate 9 of the exhaust gas discharger 7 on the bottom side of the water tank 1 as a large number of bubbles, It floats and passes through the tank water W, floats on the water surface S, and is discharged into the atmosphere from the exhaust duct d and the chimney.
Since there are a plurality of dispersing means 4, 5, 6 in the tank water W, a large number of bubbles floating from the perforated plate 9 pass through the lower dispersing means 5, are dispersed into countless bubbles, and rise and rise, After the bubbles are further dispersed by the middle dispersion means 6, the bubbles rise and rise in the tank water W, and finally pass through the upper dispersion means 4, so that the bubbles rise and rise while being gradually subdivided. To surface. Accordingly, since the exhaust gas floats and passes through the tank water W in this way, the dust in the exhaust gas is trapped in the tank water W during this time, and hydrophilic pollutants are removed from the tank water. Is easily and reliably captured.
      [0035]
Contaminants such as dust trapped in the tank water settle and deposit on the bottom of the water tank at the portion where the specific gravity is large. Foam that floats on the surface of the water together with components that have a small specific gravity and floats on the surface of the water, and exhaust gas bubbles, and adhering contaminants thereof overflow the weir L and are discharged.
Therefore, the minimum amount of water is always sprayed from the water spray pipe 2 so that the suspended matter and floating bubbles on the water surface S always overflow. Further, when foreign matter or the like remains in the exhaust gas floating from the water surface S, it is knocked down into the tank water W at the time of watering. When the water spray collides with the perforated plate or the net body 3 and the water spray is generated, the water spray and the foreign matter in the floating exhaust gas are combined and flow into the water surface S. Therefore, the purification action is performed even after rising from the water surface S.
      [0036]
For example, if each of the bubble dispersing means 4, 5, 6 is finely vibrated in the horizontal direction by a vibration device, each of the exhaust gas bubbles rising and rising by itself can be further subdivided. By dispersing or subdividing the floating bubbles as described above, a larger part of the exhaust gas comes into contact with the tank water W, water spray or spray, and the contaminants are captured and adsorbed more effectively and purified. The
The vibration means can be easily realized. For example, an eccentric cam c fixed to the rotating shaft 12 is inserted into a non-round hole formed in a rib provided in the diameter direction of each of the bubble dispersion means 4, 5, 6. In this state, when the rotating shaft 12 is continuously rotated by the motor M, each of the bubble dispersing means 4, 5, 6 reciprocates slightly in the direction of the rib against the tension coil spring s on the opposite side. Water leakage can be prevented by interposing an O-ring made of an elastic material such as rubber between the rotating shaft 12 and the water tank container.
Further, by attaching and supporting a ring-shaped frame attached to the outer periphery of each of the bubble dispersing means 4, 5, 6 on the inner surface of the water tank container with an elastic packing or spacer, it is possible to easily vibrate. Needless to say, the vibration means can be used other than the configuration shown in the figure. In addition, since a large load does not act on the bubble dispersion means 4, 5, 6, the elastic packing and the spacer for the attachment are not provided on the entire circumference of the bubble dispersion means 4, 5, 6. ~ 4 or more are enough.
      [0037]
As described above, the exhaust gas is introduced into the lower part of the tank water and floats, which is a suitable method for collecting and removing sedimentary foreign matters having a large specific gravity at the bottom of the water tank. On the other hand, since FIG. 2 is a method of introducing exhaust gas to the upper side of the water surface S of the tank water W and knocking the contaminants into the tank water W, the light dirt that tends to float on the water surface S is removed. It is an effective method.
In the water tank 1 of FIG. 2, a watering pipe 2 for spraying and a spraying pipe 14 for spraying are provided in a space above the water surface S, and a perforated plate or a net 15 is provided between them. A fine mesh body 16 serving as a final filter is disposed on the upper side.
In order to maintain the water surface S of the water tank 1 at a constant level, an overflow weir L is provided in the same manner as in FIG.
      [0038]
The exhaust gas introduced into the space above the water surface S by the exhaust duct 8 flows out from many holes of the porous plate 9 of the discharger 7 in the state where water is supplied through the water spray pipe 2 and the tank water W is accumulated. The infinite number of mist-like fine water droplets ejected from the spray tube 14 are repeatedly combined and gradually enlarged. As a result, it is struck down by the shower-like washing water that has descended and mixed into the water surface S. The bottom plate of the discharger 7 may have a drain hole or a perforated plate.
In this way, the filth 10 captured and precipitated by the wash water flows out of the drain pipe 11 and is discharged from the water tank 1 and processed. Valve means for opening and closing the upper end of the drain pipe 11 in the water tank 1 can be provided, and the opening and closing control can be automatically performed by a timer or the like, or the opening and closing signal of the valve means can be manually transmitted from the outside to be opened and closed.
Alternatively, the drain pipe 11 can be provided with an opening / closing means such as a faucet so that the filth 10 does not accumulate at the bottom of the water tank. At this time, since the fluidity is better when the filth 10 and water are appropriately mixed, the faucet operation may be performed while monitoring the spilled filth from time to time so that the sewage 10 and the water are always mixed.
      [0039]
There is no opportunity to combine with spraying, and the exhaust gas that has risen gets trapped by contaminants and particles when it rises through the perforated plate and the fine holes and meshes of the mesh body 15 that are always wet by water sprayed by the water spray pipe 2 Then, it is washed off with watering by the watering pipe 2.
In addition, if the water spray collides with the perforated plate or the nets 3 and 15, it will spray and float in the form of a mist, so that it encounters remaining contaminants and particles, etc., and becomes heavier and descends gradually. In addition, it is struck down with watering and purified more reliably.
Since the net 16 disposed on the water spray pipe 2 is the finest in the net and is damp due to spraying or the like, the final removal of foreign matters and fine particles is performed. Although this net 16 is clogged, it can be easily recycled if it is washed by shower when each part in the water tank 1 is inspected and maintained. Alternatively, the water sprinkling pipe 2 may be arranged on the final stage net body 16 to always or occasionally spray water. It should be noted that optimum conditions such as increasing / decreasing or changing the shape of each of the bubble dispersing means 4, 5, 6 and the nets 3, 15, 16, and the perforated plate can be adopted.
      [0040]
Foreign matter and fine particles are struck down into the lower tank water W by the spraying and spraying of the washing water, passing through the perforated plate, or the net body to be deposited, and the accumulated filth 10 is obtained. Further, the light portion floating on the water surface S overflows the weir L, overflows together with the drainage, is removed from the water tank 1 and processed.
When the rotating shaft 12 of FIG. 1 is provided in parallel with the diametrical ribs provided on the perforated plates and the mesh bodies 4 to 6, 15, and 16 of FIGS. 1 and 2 and rotated by a motor outside the water tank, the eccentric cam c Since the perforated plate and the nets 4 to 6, 15 and 16 are vibrated in the direction perpendicular to the surface, clogged moisture, foreign matter, fine particles and the like can be knocked down, so that clogging can be prevented automatically at all times.
In addition, an area can be expanded if a perforated plate and the net | network bodies 4-6, 15, 16 are formed in a waveform or a pleat shape. The net body is not necessarily limited to a net body knitted in the vertical and horizontal directions, and may be an integrally molded net shape of synthetic resin or a non-woven fabric shape.
      [0041]
Although the aquarium 1 has an oval shape, a spherical shape, a cylindrical shape, a box shape, or the like is also possible, and the shape is not particularly limited. A stirring blade is inserted under the inner water surface S to generate a water flow of the tank water W, to circulate it in a convection manner, or to perform stirring.
It goes without saying that the dispersing means 4 to 6 and the perforated plates or the nets 15 and 16 can be washed and used repeatedly or exchanged. When the dispersion means 4 to 6 are sprinkled with the water spray pipe 2 in the state where the tank water W is removed during maintenance, the clogging of the dispersion means 4 to 6 can be easily cleaned and regenerated.
As shown in FIG. 2, if the connecting portion 13 is provided by dividing the water tank 1 into the maximum diameter portion and the optimal position in terms of structure and providing the connecting means 13, the inside can be opened for easy maintenance and cleaning. Is possible. However, a window hole that is opened and closed by a door, a cover plate, or the like may be provided in the water tank 1 so that a maintenance inspection can be performed by looking into or entering the interior.
      [0042]
In FIG. 1 and FIG. 2, the tank water W is filtered by the filter f, pressurized by the pressurizing pumps C, C1, and C2, and sprayed from the sprinkling pipe 2 or sprayed by the spray pipe 14, which is consumed due to an overflow operation or the like. Therefore, new cleaning water is replenished from the water pipes P, P1, and P2 constantly or sometimes. Not limited to the overflow operation, it evaporates or splashes into the atmosphere from the exhaust duct d or the chimney and is consumed.
Moreover, when water resources are abundant and it is not always necessary to circulate and effectively use the tank water W after washing, it is always possible to introduce clean fresh water from the water pipes P, P1, and P2 to sprinkle water. preferable.
      [0043]
When the cleaning water is effectively used, sewage overflowing the overflow weir L can also be used. In this case, as shown in FIG. 2, overflow water is accumulated in a separate sedimentation tank 31, the floating substance overflows from the overflow weir L, and the filth having a large specific gravity is settled on the tank bottom and is discharged from the drain pipe 11. . Accordingly, the supernatant W in the settling tank 31 is supplied to the water spray pipe 2 via the filter f. When the net N is arranged on the settling tank 31 and the overflow water of the water tank 1 is dropped from the net N, the suspended matter can be separated and removed by the net N.
The overflow water in the settling tank 31 can also be supplied to the water spray pipe 2 via the filter f after being filtered through the net n.
      [0044]
The water tank 1 in FIG. 2 can be replaced with a separate sedimentation tank 31 instead of storing the tank water W at the bottom. In this case, the drain pipe 11 of the water tank 1 is made thick so that the washing water can flow immediately and smoothly to the settling tank 31 side without the tank water W accumulating in the water tank 1. As a result, all the clean water in the water tank 1 is accumulated in the settling tank 31, the floating material overflows from the overflow weir L, and the filth 10 having a large specific gravity is precipitated and discharged from the drain pipe 11.
The tank water W in the settling tank 31 is supplied to the water spray pipe 2 and the spray pipe 14 via the filter f. Thus, when substituting the sedimentation tank 31, the overflow L is also unnecessary for the water tank 1.
In addition, when substituting the separate sedimentation tank 31, the water tank 1 is exclusively used for cleaning, and the tank water W does not accumulate, but is defined as being included in the “water tank” for convenience.
      [0045]
FIGS. 1 and 2 show that the smoke and exhaust gas are cleaned and cleaned in a water-washing manner while rising and rising in the sprinkling, spraying, spraying, dispersing means 4 to 6 and perforated plates or nets 15 and 16. On the other hand, FIG. 3 shows a method in which contaminants such as foreign matter, fine particles, and fats and oils are taken into the lower aquarium while exhaust gas is exhausted horizontally in the tunnel-shaped duct D. .
The dust removal duct D in FIG. 3 has a square tunnel shape as shown in FIG. 4, and smoke and exhaust gas are introduced into the left end of the figure and discharged into the atmosphere from the right end.
A water supply pipe 17 is provided outside the dust removal duct D, water is supplied to the water spray pipe in the dust removal duct D, and water is sprayed from the water spray hole H. As shown in FIG. 4, each water spray hole (nozzle) H can spray water from each direction such as downward from the ceiling, from the left and right side walls to the center, and from the bottom to the ceiling. Water can be sprayed from the diagonal to the center as shown by the arrow.
Note that the cross-sectional shape of the dust removal duct D is not limited to a quadrangle as shown in FIG. 4, and may be a circle, an ellipse, or other polygonal shapes.
      [0046]
In FIG. 3, the arrows a <b> 1 are the watering direction, the mark “◯” is the watering direction from the paper surface to the front, and the mark “X” is the watering direction from the front to the paper surface. As is clear from these watering directions, the water sprays from the respective wall portions are shifted in the exhaust gas passage direction so that they do not collide with each other. Collide with and generate splashes.
As shown in FIG. 4, when one or a plurality of perforated plates or nets 18, 19 stand up away from the wall surface, the water splashed from the side walls collides with the nearest perforated plate or nets 18, 19. The water spray that has splashed and passed without colliding collides with the next perforated plate or the nets 19 and 18 to generate the water splash.
If the perforated plates or the nets 20 and 21 are arranged in the horizontal direction on the same principle, the water spray can be generated by watering in the vertical direction.
      [0047]
A water tank is formed at the bottom of the dust removal duct D to keep the tank water W constantly, and a weir L is provided to constantly overflow the water surface. The water spray nozzle H on the bottom side is installed so as to be ejected upward from the water supply pipe 17 piped in the tank water W.
The perforated plates or nets 22 and 23 provided upright or obliquely in FIG. 3 are provided so as to block the flue of the dust removal duct D, and the washing water is supplied to the upper sprinkling pipe 24 so that the whole is always wet. Water is supplied and washed constantly so as not to clog pores and meshes. Accordingly, the water spray pipe 24 is piped in a direction perpendicular to the paper surface, and can be sprinkled in a water curtain form from a large number of rows of shower holes.
      [0048]
When the rotating shaft 12 of FIG. 1 is provided in parallel with the ribs passing through the centers of the perforated plates or nets 22 and 23 and rotated by the motor outside the dust removal duct D, the perforated plates and nets 22 and 23 are moved by the eccentric cam c. Since the clogged water and contaminants can be struck down by vibrating in the direction perpendicular to the surface, clogging can be prevented automatically automatically at all times.
In the same manner as in FIG. 1, the gas passing through the pores and meshes is refined by finely vibrating the perforated plates or the ribs passing through the centers of the mesh bodies 22 and 23 in the surface direction, and then the water spray in the processing chamber R is sprinkled. When they are encountered and splashed with water and mixed with each other, pollutants in the exhaust gas can be captured more effectively.
      [0049]
Now, in FIG. 3, when exhaust gas such as flue gas flows from the left side of the figure, the pollutants in the exhaust gas are knocked down by the water spraying from the top, bottom, left and right or oblique directions in the dust removal duct D, It is trapped in the tank water W. In addition, when there are 18, 19, 20, 21 perforated plates or nets, they encounter a splash of water generated by the sprinkling of these, and become bloated and heavy, so that they are easily knocked down into the tank water W. . Further, since the perforated plates or the nets 22 and 23 standing upright or vertically so as to block the dust removal duct D are wet, foreign substances, fine particles, and fats and oils are not generated when the exhaust gas passes through the perforations and meshes. It is adsorbed by moisture and washed away with the upper shower water, and merges into the lower tank water W.
      [0050]
In the illustrated example, the exhaust gas passes through the two-stage processing chamber R before and after the slanted net member 23, but the processing chamber can be one stage or three or more stages.
Further, as described above, the final mesh body 22 is slightly vibrated in the direction perpendicular to the surface to knock down the moisture to make it free from clogging. Immediately thereafter, the water curtain WC is formed into a thin film with a gap g. Once formed, the final water wash is performed when the beam-like airflow that has passed through the mesh passes through the water curtain WC.
A water curtain WC is formed by disposing a pipe 30 in a direction perpendicular to the paper surface directly above the water curtain WC and lowering a water flow from a slit in a direction perpendicular to the paper surface.
As described above, when the final mesh body 22 is also slightly vibrated in the surface direction, mixing of the contaminants after passing through the mesh body 22 and the water of the water curtain WC becomes more effective.
      [0051]
By repeating such an operation, pollutants in the exhaust gas are captured in the tank water W of the aquarium, and components and bubbles floating on the water surface S overflow the weir L and are discharged out of the dust removal duct D for treatment. Is done.
The components precipitated at the bottom of the water tank are collected in the sludge tank 25 as shown in FIG. As shown in the figure, when the bottom of the water tank is formed in a V shape with the left and right inclined plates, the sediment 10 accumulates in the valley, so if the slit 26 is opened in the valley bottom, the sediment 10 is slit 26. Extruded from. The opening degree can be adjusted by adjusting the slide plate 27 to open and close the slit 26. In addition, it is also possible to employ only one inclined plate without using a V shape. The slit 26 is in the same direction as the duct.
The drain pipe 11 for leading the spilled material flowing out from the slit 26 is provided as shown in FIGS. 1 and 2, and the discharge of the sewage is controlled by operating the faucet while checking the mixed state of the spilled material with water. it can.
      [0052]
Although the water supply pipe 17 in FIG. 3 is piped in the duct direction, it can be piped in a direction orthogonal to the duct direction as shown in FIG.
In addition, by rotating a water turbine-shaped rotary impeller 29 that sprinkles water supplied centrally by a water pipe or the like radially at a high speed with a motor at the center of the purification treatment chamber R in the duct, It is also possible to spray water in a radial manner and to generate a splash at the time of a collision so that the pollutant in the pollutant gas passing through the processing chamber R can be adsorbed to water.
      [0053]
The tank water W in the water tanks of FIGS. 3 and 4 is also purified through the filter f, returned to the water supply pipe 17 and circulated, and used repeatedly over and over.
By adding detergents and surfactants to the purified water supplied to the aquarium or cleaning water supplied to the water tank or by adding detergents and surfactants, it becomes possible to reliably trap the pollutants with water. .
In the above embodiment, when a large amount of water remains in the suspended matter overflowing from the weir L or the sediment recovered from the lower part of the water tank, it can be circulated after being purified by a filter or the like, and can be reused for watering or water tank.
The smoke exhaust and exhaust gas introduction portion according to the present invention is provided with a pressurizing fan F1 and pushed into the dust removal purification portion, and the suction side thereof is provided with a suction fan F2 made of a sirocco fan or the like for suction. Is effective.
It is effective to provide deodorizing means 28 such as charcoal or chemical deodorant on the discharge side for deodorization.
      [0054]
When a large amount of exhaust gas or smoke is discharged, the single duct shown in FIG. 3 cannot be used for processing. Therefore, as shown in FIG. 6, a structure in which two or more duct processing chambers R shown in FIG. By doing so, it can cope with a large amount of processing.
Each arrow is a direction of the water stream sprayed or fountained from a water spray pipe.
      [0055]
Contaminants such as water floating material overflowing from the tank weir L and sediment deposited at the bottom of the water tank are often troubled by their disposal, but in the case of the present invention, chemical agents are included if harmful substances are contained. Since it is detoxified and then mixed with cement to solidify the concrete, it can be recycled into concrete blocks and reused as building materials, landfills, retaining walls, etc.
If the collected pollutant is excessive in water, adding incineration ash or incineration residue generated from an incinerator or the like makes it easy to adjust the water content when blended with cement.
In the above embodiment, the means for causing the water spray to collide with the perforated plate or the net has been disclosed, but a commercially available spray nozzle can be used instead. However, since a high pressure is required, a pressurizing pump is required.
[Industrial applicability]
      [0056]
As described above, according to the present invention, the exhaust gas floats and passes through the tank water in the form of bubbles and / or the exhaust gas passes through the water spray and / or the exhaust gas passes through the perforated plate and / or network body wetted with water. As a result, contaminants are removed and purified, so the disadvantages of filter replacement and cleaning / regeneration can be solved easily, and pollutants in various exhaust gases can be effectively captured by water, and recovered and rendered harmless. Processing is easy and there is no risk of deteriorating the work environment.
[Explanation of symbols]
      [0057]
1 tank
W tank water
S water surface
L weir
2 watering pipes
3 perforated plate or mesh
4 Upper dispersion means
5 Lower dispersion means
6 Intermediate dispersion means
7 exhaust gas exhaust
8 Exhaust gas inflow duct
9 perforated plates
f filter
C ・ C1 ・ C2 pressurizing pump
d exhaust duct
c Eccentric cam
10 sediment waste
11 drain tube
12 rotation axes
13 connecting means
14 spray tubes
15 perforated plate or mesh
16 fine mesh
D dust removal duct
R water washing treatment room
17 water supply pipe
H sprinkling hole
18.19.20.21 perforated plate or mesh
22, 23 Vertical or oblique perforated plate or net
24 watering pipes
WC water curtain
25 sludge tank
26 slits
28 Deodorizing means
29 rotating impeller
30 piping
31 sedimentation tank

Claims (13)

  1. 1以上の散水手段および/又は水しぶき発生手段を用いて、散水および/又は水しぶきを発生させ、その中を排ガスが水平方向に流れる除塵ダクト装置であって、
    1又は複数の多孔板又は網体を、前記除塵ダクトの左右の側壁面から離して立てて、側壁から飛散した散水は、最寄りの多孔板や網体に衝突して水しぶきを発生し、衝突しないで通過した散水は、次の多孔板や網体に衝突して水しぶきを発生し、
    同様な原理で、水平方向の上下にも多孔板又は網体を配設して、上下方向の散水によって水しぶきを発生させると共に、
    立てて又は斜めに設けた多孔板又は網体を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の前後両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する構成としたことを特徴とする汚染ガスの除塵浄化装置。
    Using one or more water spray means and / or spray generating means to generate a watering and / or spray, a dust removal duct system which the exhaust gas flows horizontally through the its,
    One or a plurality of perforated plates or nets are set apart from the left and right side wall surfaces of the dust removal duct, and the water splashed from the side walls collides with the nearest perforated plates or nets to generate splashes and do not collide. The water sprinkled by the water collides with the next perforated plate or net and generates splashes.
    With the same principle, a perforated plate or a net is also arranged in the upper and lower sides in the horizontal direction, and splashes are generated by watering in the upper and lower directions,
    Perforated plates or nets installed upright or obliquely are provided so as to block the dust removal duct, and cleaning water is supplied to both the front and back of the exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. A dust removing and purifying apparatus for polluting gas, characterized in that it is configured to always wash so as not to clog pores and meshes .
  2. 1以上の散水手段および/又は水しぶき発生手段を用いて、散水および/又は水しぶきを発生させ、その中を排ガスが水平方向に流れる除塵ダクト装置であって、
    前記除塵ダクトの中央に供給された水を放射状に散水する水車状の回転羽根車を設け、その回転時の遠心力で除塵ダクトの内壁に放射状に散水すると共に衝突時に水しぶきを発生させる構造とし、
    立てて又は斜めに設けた多孔板又は網体を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の前後両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄する構成としたことを特徴とする汚染ガスの除塵浄化装置。
    Using one or more water spray means and / or spray generating means to generate a watering and / or spray, a dust removal duct system which the exhaust gas flows horizontally through the its,
    Provided with a water wheel-like rotary impeller that scatters the water supplied to the center of the dust removal duct in a radial manner, and a structure that sprays water radially on the inner wall of the dust removal duct by centrifugal force at the time of rotation and generates splashes at the time of collision,
    Perforated plates or nets installed upright or obliquely are provided so as to block the dust removal duct, and cleaning water is supplied to both the front and back of the exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. A dust removing and purifying apparatus for polluting gas, characterized in that it is configured to always wash so as not to clog pores and meshes .
  3. 前記除塵ダクトの下部に水槽を設けて、水槽の水面位置に設けたオーバーフロー堰からオーバーフローさせることによって、前記水槽中の水面を一定レベルに維持することを特徴とする請求項1又は請求項2に記載の汚染ガスの除塵浄化装置。 The water surface in the water tank is maintained at a constant level by providing a water tank at a lower part of the dust removal duct and causing the water tank to overflow from an overflow weir provided at a water surface position of the water tank. Dedusting and purifying device for the pollutant gas described.
  4. 除塵ダクトを塞ぐように設けた多孔板および/又は網体をその面方向におよび/又はその面と垂直方向に振動させる構造を特徴とする請求項1、請求項2又は請求項3に記載の排気ガスの除塵浄化装置。 The structure according to claim 1, 2 or 3, wherein the perforated plate and / or the net provided to close the dust removal duct are vibrated in the surface direction and / or in the direction perpendicular to the surface . Dust removal purification device for exhaust gas.
  5. 前記多孔板又は網体の前後両面に洗浄水を給水する散水管は、除塵ダクトと直角方向に配管されていて、1列のシャワー孔から水カーテン状に散水可能となっていることを特徴とする請求項1、請求項2、請求項3又は請求項4に記載の排気ガスの除塵浄化装置。 The water spray pipe for supplying cleaning water to both the front and rear surfaces of the perforated plate or the net is provided in a direction perpendicular to the dust removal duct, and is capable of water spraying in a water curtain form from one row of shower holes. The exhaust gas dust removing and purifying apparatus according to claim 1, claim 2, claim 3 or claim 4.
  6. 前記水槽の底部をV状又は坂状に傾斜させて次第に狭くすると共に、その谷部にスリットを開けて、スライド板を上下にスライド調節することで、前記スリットを開け閉めし、開度を調節できるように構成してなる請求項3から請求項5までのいずれかに記載の排気ガスの除塵浄化装置。 The bottom of the water tank is gradually narrowed in a V shape or a slope, and a slit is opened in the valley, and the slide plate is slid up and down to open and close the slit and adjust the opening. The exhaust gas dust removing and purifying apparatus according to any one of claims 3 to 5, wherein the exhaust gas dust purifying apparatus is configured so as to be able to do so .
  7. 前記のように水の作用によって除塵浄化された後の排ガスの流出側に脱臭手段を設けて脱臭し、又は無害化処理手段を設けることを特徴とする請求項1から請求項6までのいずれかに記載の汚染ガスの除塵浄化装置。 The deodorizing means is provided on the outflow side of the exhaust gas after being dedusted and purified by the action of water as described above, or a detoxification processing means is provided. dust purification system of pollutant gases according to.
  8. 水槽に供給する浄化水又は水槽中の槽水に洗剤又は界面活性剤を添加する手段を設けることによって、油脂性の汚染物質を水に吸着し捕捉し易くすることを特徴とする請求項3から請求項7までのいずれかに記載の汚染ガスの除塵浄化装置。 The oily pollutant is easily adsorbed and captured by water by providing means for adding detergent or surfactant to purified water supplied to the water tank or tank water in the water tank. 8. A dust removal purification apparatus for pollutant gas according to claim 7 .
  9. 前記の除塵ダクトを並列に2以上併設した構造とすることを特徴とする請求項1から請求項8までのいずれかに記載の汚染ガスの除塵浄化装置。 The dust removal purification apparatus for polluted gas according to any one of claims 1 to 8, wherein two or more dust removal ducts are arranged in parallel .
  10. 排ガスで汚れた水槽中の水を、フィルターを通して浄化した後に、給水管に戻して循環させ、再度排ガスの除塵浄化に使用する構成であることを特徴とする請求項3から請求項9までのいずれかに記載の汚染ガスの除塵浄化装置。 The water in the water tank contaminated with exhaust gas is purified through a filter, returned to the water supply pipe, circulated, and used for dust removal purification of the exhaust gas again. A dust removal and purification device for polluted gases.
  11. 散水手段および/又は水しぶき発生手段への給水管は、除塵ダクトの方向又は除塵ダクトの方向に対し直交する方向に配管してあることを特徴とする請求項1から請求項10までのいずれかに記載の汚染ガスの除塵浄化装置。 Water supply pipe to the water spray means and / or spray generating means, one of the pipes to tare Rukoto in a direction perpendicular to the direction of direction or dust duct dust duct claim 1, wherein up to claim 10 Dedusting and purifying device for pollutant gas as described in 1.
  12. 1以上の散水手段および/又は水しぶき発生手段を用いて、除塵ダクト内で散水および/又は水しぶきを発生させ、その中を排ガスが水平方向に流れる際に、
    前記除塵ダクトの中央に供給された水を放射状に散水する水車状の回転羽根車を設け、その回転時の遠心力で除塵ダクトの内壁に放射状に散水すると共に衝突時に水しぶきを発生させるか、又は前記除塵ダクトの左右の側壁面から離して多孔板又は網体を立てて、側壁から飛散した散水を衝突させて水しぶきを発生させ、同様な原理で、水平方向の上下にも多孔板又は網体を配設して、上下方向の散水を衝突させる方法で水しぶきを発生させると共に、
    立てて又は斜めに設けた多孔板又は網体を、除塵ダクトを塞ぐように設けてあり、しかも全体が常に濡れるように上部の排ガス流入側と排ガス流出側の両面に洗浄水を給水して、多孔や網目が目詰まりしないように常時洗浄することを特徴とする汚染ガスの除塵浄化方法。
    Using one or more water spray means and / or spray generating means, dust is generated watering and / or spray in the duct, in the inside of that exhaust gas flows in the horizontal direction,
    A turbine wheel-like rotary impeller for radially spraying the water supplied to the center of the dust removal duct is provided, and the centrifugal force at the time of rotation causes the water to be sprayed radially on the inner wall of the dust removal duct and to generate splash at the time of collision, or A perforated plate or mesh body is set up apart from the left and right side wall surfaces of the dust removal duct, and splashes are generated by colliding with water splashed from the side wall. And spraying with a method of colliding the water spray in the vertical direction,
    Perforated plates or nets installed upright or obliquely are provided so as to block the dust removal duct, and the cleaning water is supplied to both the exhaust gas inflow side and the exhaust gas outflow side of the upper part so that the whole is always wet, A method for removing and purifying pollutant gas, characterized by constantly washing so as not to clog pores and meshes .
  13. 前記の方法で排ガスの除塵浄化が行われる際に、
    排ガスの除塵浄化に使用した後の水が流入する水槽からオーバーフローした水面浮遊物および/又は水槽若しくは該水槽から沈殿物が供給される汚泥槽の下部に堆積した沈殿物を回収して、接着手段と混合して固めることを特徴とする請求項12に記載の汚染ガスの除塵浄化方法。
    When dust removal purification of exhaust gas is performed by the above method,
    The precipitate deposited on the bottom of the sludge tank where water suspended matter is water after being used for the dust removal purification of exhaust gas overflowing from the water tank to flow and / or water bath or precipitates from the aqueous bath is supplied with recovered, contact adhesive The method for removing and purifying pollutant gas according to claim 12, wherein the method is mixed and hardened .
JP2010544857A 2008-12-30 2009-12-30 Flushing dust removal and purification equipment for polluted gases Active JP5514742B2 (en)

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