JP2008238092A - Deodorization treatment method of tail gas - Google Patents
Deodorization treatment method of tail gas Download PDFInfo
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- JP2008238092A JP2008238092A JP2007084218A JP2007084218A JP2008238092A JP 2008238092 A JP2008238092 A JP 2008238092A JP 2007084218 A JP2007084218 A JP 2007084218A JP 2007084218 A JP2007084218 A JP 2007084218A JP 2008238092 A JP2008238092 A JP 2008238092A
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
本発明は排ガスの脱臭処理方法に関し、さらに詳しくは揮発性有機化合物を含有する排ガスの脱臭処理方法に関する。 The present invention relates to an exhaust gas deodorization treatment method, and more particularly to an exhaust gas deodorization treatment method containing a volatile organic compound.
塗装、印刷もしくは接着工程は種々の産業において欠かせないものである。たとえば、塗装工程から排気中には、塗料ミスト、有機溶剤等のトルエン、キシレン、イソブタノール等も含有されており、不快な臭気を伴う。この排ガスをそのまま放出すると大気汚染の原因にもなるため、燃焼処理したり、貴金属触媒により酸化処理した後排気することが行なわれている。しかし、直接燃焼処理するためには、多量の燃料を必要とし、さらにＳＯｘ、ＮＯｘ等の有害物質を副生するおそれがあり、また貴金属触媒は、総じて硫黄系化合物に被毒されやすく解決すべき幾つかの課題がある。 The painting, printing or bonding process is indispensable in various industries. For example, paint mist, toluene such as organic solvents, xylene, isobutanol, and the like are contained in the exhaust gas from the painting process, which causes an unpleasant odor. If this exhaust gas is released as it is, it may cause air pollution, so that it is burned or exhausted after being oxidized with a noble metal catalyst. However, in order to perform direct combustion treatment, a large amount of fuel is required, and there is a possibility that harmful substances such as SOx and NOx are produced as by-products, and precious metal catalysts are generally easily poisoned by sulfur compounds and should be solved. There are several challenges.
そこで、種々の方法が検討され、その一つとして分子間で臭気原因物質を取り込み無臭化する超高分子量ポリマー吸着剤を微細ゲルもしくはゾル（マイクロゲルもしくはミクロゲル、またはマイクロゾルもしくはミクロゾル）として排ガス中に噴霧する方法も利用されているが、その弱点は排ガスとの接触時間を一定時間以上取る必要があり、湿気箱を大きくするかダクト長を長くしなければならない。また、酸化チタン等の光触媒も利用されているが、サブミクロンオーダーの汚れが触媒表面に付着し、使用時間の経過とともに効果がなくなること、さらには付着した汚れを除去することが困難である点に難がある。そして、通常の洗浄・天日乾燥では十分な復帰は望み難く、焼成処理が必要となるため、使用されている担体の種類によっては、その寿命低下の大きな要因となる。 Therefore, various methods have been studied, and as one of them, an ultrahigh molecular weight polymer adsorbent that takes in odor-causing substances between molecules and does not bromide is used as a fine gel or sol (microgel or microgel, or microsol or microsol) in exhaust gas. However, the weak point is that the contact time with the exhaust gas needs to be longer than a certain time, and the humidity box must be enlarged or the duct length must be lengthened. In addition, photocatalysts such as titanium oxide are also used, but submicron order dirt adheres to the catalyst surface, the effect is lost with the passage of time of use, and it is difficult to remove the attached dirt. There are difficulties. In addition, it is difficult to expect a sufficient recovery by ordinary washing and sun drying, and a baking process is required. Therefore, depending on the type of the carrier used, it is a major factor in reducing the service life.
本発明は、上記の難点を克服し、特に塗装、印刷もしくは接着工程等からの揮発性有機化合物を含有する排ガスを効率的に脱臭処理しうる方法を提供する。 The present invention overcomes the above-mentioned difficulties and provides a method that can efficiently deodorize exhaust gas containing volatile organic compounds from, for example, painting, printing, or bonding processes.
本発明は、上記の課題を解決するために以下の発明を提供する。
（１）炭素原子に酸性基、中性基および塩基性基が結合してなる超高分子化合物の水溶液もしくは水分散体を微細ゲルもしくはゾルとして排ガスに噴霧し、ついで該排ガスを脱臭フィルター層を通過させることを特徴とする排ガスの脱臭処理方法；
（２）排ガスが揮発性有機化合物を含有する上記（１）記載の排ガスの脱臭処理方法；
（３）排ガスが塗装、印刷もしくは接着工程からの排ガスである上記（１）もしくは（２）記載の排ガスの脱臭処理方法；
（４）超高分子化合物の炭素原子が直鎖性である上記（１）〜（３）のいずれか記載の排ガスの脱臭処理方法；
（５）超高分子化合物の質量平均分子量が５００万〜５０００万である上記（１）〜（４）のいずれか記載の排ガスの脱臭処理方法；
（６）超高分子化合物がポリアクリルアミド系、ポリアクリル酸系もしくはポリメタクリル酸系化合物である上記（１）〜（５）のいずれか記載の排ガスの脱臭処理方法；
（７）噴霧された微細ゲルもしくはゾルの粒径が１０〜５００ｎｍである上記（１）〜（６）のいずれか記載の排ガスの脱臭処理方法；
（８）脱臭フィルター層が光触媒層、活性炭層および/または無機繊維層である上記（１）〜（６）のいずれか記載の排ガスの脱臭処理方法；
（９）光触媒層がチタニアである上記（８）記載の排ガスの脱臭処理方法；
（１０）光触媒層がセラミックフォームに担持されている上記（８）もしくは（９）記載の排ガスの脱臭処理方法；
（１１）セラミックフォームがアルミナ、コーディエライト、シリカ・アルミナ、ジルコニアもしくは炭化ケイ素から選ばれる上記（１０）記載の排ガスの脱臭処理方法；
（１２）光触媒層が紫外線照射される上記（８）〜（１１）のいずれか記載の排ガスの脱臭処理方法；
（１３）排ガスをスクラバーにより水洗浄し、ついで除湿した後に、超高分子化合物を微細ゲルもしくはゾルとして噴霧する上記（１）〜（１２）のいずれか記載の排ガスの脱臭処理方法；
（１４）除湿した後に、さらに除塵し、ついで超高分子化合物微細ゲルもしくはゾルとして噴霧する上記（１３）記載の排ガスの脱臭処理方法；
（１５）脱臭処理前および脱臭処理後の排ガスの臭気濃度がそれぞれ１００００以上および５００以下である上記（１）〜（１４）のいずれか記載の排ガスの脱臭処理方法；
（１６）脱臭処理後の排ガスの臭気濃度が３００以下である上記（１５）記載の排ガスの脱臭処理方法、
（１７）排ガスに微細ゲルもしくはゾルを噴霧するための微細ゲルもしくはゾル噴霧部および微細ゲルもしくはゾルを噴霧された排ガスを導入するための脱臭フィルター層を備えた排ガスの脱臭処理装置において、脱臭フィルター層は光触媒層がセラミックフォームに担持されてなる排ガスの脱臭処理装置；
（１８）微細ゲルもしくはゾル噴霧部の前段にガスを洗浄するためのスクラバー部をさらに備えた上記（１７）記載の排ガスの脱臭処理装置；
（１９）スクラバー部と微細ゲルもしくはゾル噴霧部の間に除湿部をさらに備えた上記（１８）記載の排ガスの脱臭処理装置；
（２０）除湿部と微細ゲルもしくはゾル噴霧部の間に除塵部をさらに備えた上記（１９）記載の排ガスの脱臭処理装置；ならびに
（２１）微細ゲルもしくはゾルが炭素原子に酸性基、中性基および塩基性基が結合してなる超高分子化合物の水溶液もしくは水分散体の噴霧により得られる上記（１７）〜（２０）のいずれか記載の排ガスの脱臭処理装置、
である。
The present invention provides the following inventions in order to solve the above problems.
(1) An aqueous solution or dispersion of an ultrahigh molecular compound in which an acidic group, a neutral group and a basic group are bonded to a carbon atom is sprayed on exhaust gas as a fine gel or sol, and then the exhaust gas is applied to a deodorizing filter layer. Exhaust gas deodorization treatment method characterized by passing through;
(2) The method for deodorizing exhaust gas according to (1) above, wherein the exhaust gas contains a volatile organic compound;
(3) The method for deodorizing exhaust gas according to (1) or (2) above, wherein the exhaust gas is exhaust gas from a painting, printing or bonding step;
(4) The method for deodorizing exhaust gas according to any one of the above (1) to (3), wherein the carbon atom of the ultrahigh molecular compound is linear;
(5) The method for deodorizing exhaust gas according to any one of (1) to (4) above, wherein the ultrahigh molecular weight compound has a mass average molecular weight of 5 to 50 million;
(6) The method for deodorizing exhaust gas according to any one of the above (1) to (5), wherein the ultrahigh molecular compound is a polyacrylamide, polyacrylic acid or polymethacrylic acid compound;
(7) The method for deodorizing exhaust gas according to any one of (1) to (6) above, wherein the particle size of the sprayed fine gel or sol is 10 to 500 nm;
(8) The method for deodorizing exhaust gas according to any one of (1) to (6) above, wherein the deodorizing filter layer is a photocatalyst layer, an activated carbon layer and / or an inorganic fiber layer;
(9) The method for deodorizing exhaust gas according to (8) above, wherein the photocatalyst layer is titania;
(10) The exhaust gas deodorizing method according to (8) or (9), wherein the photocatalyst layer is supported on a ceramic foam;
(11) The method for deodorizing exhaust gas according to (10) above, wherein the ceramic foam is selected from alumina, cordierite, silica / alumina, zirconia or silicon carbide;
(12) The method for deodorizing exhaust gas according to any one of (8) to (11) above, wherein the photocatalyst layer is irradiated with ultraviolet rays;
(13) The method for deodorizing exhaust gas according to any one of (1) to (12) above, wherein the exhaust gas is washed with a scrubber and then dehumidified, and then the ultrahigh molecular compound is sprayed as a fine gel or sol;
(14) The deodorizing treatment method for exhaust gas according to (13) above, wherein the dust is further dehumidified and then sprayed as an ultra-polymer compound fine gel or sol;
(15) The method for deodorizing exhaust gas according to any one of (1) to (14) above, wherein the odor concentration of the exhaust gas before and after the deodorization treatment is 10,000 or more and 500 or less, respectively.
(16) The method for deodorizing exhaust gas according to (15) above, wherein the odor concentration of the exhaust gas after deodorization is 300 or less,
(17) A deodorizing filter in an exhaust gas deodorizing apparatus comprising a fine gel or sol spraying part for spraying fine gel or sol on exhaust gas and a deodorizing filter layer for introducing exhaust gas sprayed with the fine gel or sol. The layer is a deodorizing apparatus for exhaust gas in which a photocatalyst layer is supported on ceramic foam;
(18) The exhaust gas deodorizing apparatus according to (17), further including a scrubber unit for cleaning gas before the fine gel or sol spraying unit;
(19) The exhaust gas deodorization apparatus according to (18), further including a dehumidifying unit between the scrubber unit and the fine gel or sol spraying unit;
(20) The exhaust gas deodorizing apparatus according to (19), further comprising a dust removing part between the dehumidifying part and the fine gel or sol spraying part; and (21) the fine gel or sol has an acidic group on the carbon atom, neutral The deodorizing apparatus for exhaust gas according to any one of the above (17) to (20), obtained by spraying an aqueous solution or an aqueous dispersion of an ultrahigh molecular compound formed by bonding a group and a basic group,
It is.
本発明によれば、特に塗装、印刷もしくは接着工程等からの揮発性有機化合物を含有する排ガスを効率的に脱臭処理しうる方法を提供し得る。 According to the present invention, it is possible to provide a method capable of efficiently deodorizing an exhaust gas containing a volatile organic compound particularly from a painting, printing or adhesion process.
本発明の排ガスの脱臭処理方法においては、炭素原子に酸性基、中性基および塩基性基が結合してなる超高分子化合物の水溶液もしくは水分散体を微細ゲルもしくはゾル吸着剤として排ガスに噴霧し、ついで該排ガスを脱臭フィルター層を通過させる。 In the exhaust gas deodorization treatment method of the present invention, an aqueous solution or aqueous dispersion of an ultrahigh molecular compound in which an acidic group, a neutral group and a basic group are bonded to carbon atoms is sprayed on the exhaust gas as a fine gel or sol adsorbent. Then, the exhaust gas is passed through a deodorizing filter layer.
排ガスは特に制限されないが、たとえば塗装、印刷もしくは接着工程からの排ガス等の揮発性有機化合物を含有する排ガス、が好適に脱臭処理されうる。 The exhaust gas is not particularly limited, but for example, exhaust gas containing a volatile organic compound such as exhaust gas from a painting, printing or adhesion process can be suitably deodorized.
本発明において使用される超高分子化合物は、含まれる炭素原子が酸性基、中性基および塩基性基とに結合してなり、その炭素原子は直鎖性の配列構造を有する。これらの酸性基としては、カルボキシル基、スルホン酸基、リン酸基等、中性基としてはメチル基、エチル等、そして塩基性基としては、−ＮＨ−基、−ＮＲ３ ＋Ｘ−等が一般的であるが、これらに制限されず、これらは通常ランダムに配列されている。このような超高分子化合物の質量平均分子量は５００万〜５０００万、好ましくは１０００万〜３０００万である。超高分子化合物は水溶性もしくは水不溶性のいずれであってもよいが、操作性等の点から水溶性のものが好適である。水溶性である場合には、水中ではゾル状であるが、噴霧により気中ではゾルのままであるか、もしくはゲルを形成する。本発明の超高分子化合物としては、たとえばポリアクリルアミド系、ポリアクリル酸系もしくはポリメタクリル酸系化合物が挙げられるが、アクリルアミド/アクリル酸アンモニウム系コポリマー、アクリルアミド/ジメチルアミノエチルメタクリレート系コポリマー等のアクリルアミド/(メタ)アクリル酸コポリマーが、達成しうる効果の点から好適である。 In the ultrahigh molecular compound used in the present invention, contained carbon atoms are bonded to an acidic group, a neutral group and a basic group, and the carbon atoms have a linear arrangement structure. These acidic groups, a carboxyl group, a sulfonic acid group, a phosphoric acid group such as methyl group as a neutral group, the ethyl and the like, and a basic group, -NH- group, -NR 3 + X - or the like Although it is general, it is not restricted to these, These are usually arranged at random. The mass average molecular weight of such an ultrahigh molecular compound is 5 million to 50 million, preferably 10 million to 30 million. The ultrahigh molecular compound may be either water-soluble or water-insoluble, but is preferably water-soluble from the viewpoint of operability. When it is water-soluble, it is in a sol form in water, but remains in the sol in the air by spraying or forms a gel. Examples of the ultrahigh molecular compound of the present invention include polyacrylamide, polyacrylic acid, and polymethacrylic acid compounds, and acrylamide / ammonium acrylate copolymers, acrylamide / dimethylaminoethyl methacrylate copolymers, etc. A (meth) acrylic acid copolymer is preferred from the viewpoint of the effect that can be achieved.
このような超高分子化合物はたとえば特許第２７７５１６２号公報記載の方法により製造され得る。 Such an ultra-high molecular compound can be produced, for example, by the method described in Japanese Patent No. 2775162.
本発明方法においては、上記のような超高分子化合物が水溶性の場合には水溶液を、そして水不溶性の場合には水分散体を、微細ゲルもしくはゾル吸着剤として排ガスに噴霧する。水溶液の場合には、噴霧によりゲル化し微細ゲルを形成することが多い。噴霧された微細ゲルもしくはゾルの粒径は好適には１０〜５００ｎｍである。噴霧は通常用いられるスプレーによることができる。この微細ゲルもしくはゾルは、糸まり状に絡まり合い、超微細孔を無数に形成しており、排ガス中の悪臭分子をカチオンとアニオンの両極性間から生じる分子間引力等により瞬時に絡め取ることができる。ついで、絡め取られた悪臭分子はその種類により、超高分子化合物中の酸性基、中性基および塩基性基のいずれかと化学的に結合しうるので、多種類の悪臭分子を含有する排ガスに対しても安定して脱臭効果を得ることができる。 In the method of the present invention, an aqueous solution is sprayed onto the exhaust gas as a fine gel or sol adsorbent when the above-described ultrahigh molecular compound is water-soluble and when it is water-insoluble. In the case of an aqueous solution, it is often gelled by spraying to form a fine gel. The particle size of the sprayed fine gel or sol is preferably 10 to 500 nm. The atomization can be performed by a commonly used spray. These fine gels or sols are entangled in a string form, forming innumerable ultrafine pores, and instantly entangle the malodorous molecules in the exhaust gas by the intermolecular attractive force generated between the polarities of the cation and anion. Can do. Then, the entangled malodorous molecules can be chemically bonded to any of acidic groups, neutral groups, and basic groups in the ultra-high molecular compound depending on the type of the odorous molecules. In contrast, a deodorizing effect can be obtained stably.
微細ゲルもしくはゾル吸着剤と接触した排ガスは、通常１秒以上、好ましくは２秒以上、さらに好ましくは３〜５秒程度の接触時間を保持しうる空間を移動後、脱臭フィルター層に導入される。この脱臭フィルター層は本発明における微細ゲルもしくはゾルによる脱臭効果をさらに高める機能を有し、好適には光触媒層、活性炭層および/または無機繊維層が用いられる。 The exhaust gas in contact with the fine gel or sol adsorbent is introduced into the deodorizing filter layer after moving through a space capable of maintaining a contact time of usually 1 second or more, preferably 2 seconds or more, more preferably 3 to 5 seconds. . This deodorizing filter layer has a function of further enhancing the deodorizing effect by the fine gel or sol in the present invention, and a photocatalyst layer, an activated carbon layer and / or an inorganic fiber layer is preferably used.
たとえば、光触媒層としてはチタニアが好適であり、ハニカム状、織布状、板状、円筒状あるいは粒状等の任意の形態を採用しうるが、好ましくは、光触媒層はセラミックフォームに担持される。担持方法は常法によることができ、セラミックフォーム表面に光触媒層をたとえば５００から１０００ｎｍ程度コーティングするのが通常である。セラミックフォームとしては特に制限されないが、通常アルミナ、コーディエライト、シリカ・アルミナ、ジルコニアもしくは炭化ケイ素等から選ばれる。セラミックフォームは微細な三次元網目構造を有し、気泡を発生させ多孔構造を形成するための常法により製造され得る。 For example, titania is suitable as the photocatalyst layer, and any form such as a honeycomb shape, a woven fabric shape, a plate shape, a cylindrical shape or a granular shape can be adopted. Preferably, the photocatalyst layer is supported on a ceramic foam. The supporting method can be a conventional method, and it is usual to coat the surface of the ceramic foam with a photocatalyst layer of, for example, about 500 to 1000 nm. The ceramic foam is not particularly limited, but is usually selected from alumina, cordierite, silica / alumina, zirconia, silicon carbide, and the like. The ceramic foam has a fine three-dimensional network structure and can be manufactured by a conventional method for generating bubbles and forming a porous structure.
光触媒層には常法により紫外線照射して脱臭効果を得るのが好適である。 It is preferable to obtain a deodorizing effect by irradiating the photocatalyst layer with ultraviolet rays by a conventional method.
活性炭層としては、ヤシガラ炭、石炭系、骨炭等のいずれであってもよいが、通常ヤシガラ炭が用いられる。 The activated carbon layer may be any of coconut husk charcoal, coal-based, bone charcoal, etc., but coconut husk charcoal is usually used.
無機繊維層としてはシリカ繊維、アルミナ繊維、アルミノシリケート繊維、ジルコニア繊維などの無機質繊維のシート状集合体で構成されるものが好適に使用される。 As the inorganic fiber layer, a layer composed of a sheet-like aggregate of inorganic fibers such as silica fiber, alumina fiber, aluminosilicate fiber, zirconia fiber and the like is preferably used.
本発明方法によれば、特に光触媒層をセラミックフォームに担持する場合、光触媒脱臭により付着するヤニ状汚れが、微細ゲルの衝突によりセルフクリーニングされ、除去されるため光触媒脱臭効果が低下しないという意外な効果を奏し得る。微細ゲルの微細孔はチタニア等の光触媒の微細孔よりも小さいので接触する面積が光触媒側より大きくなり、ヤニ状汚れは微細ゲル側に移動し、微細ゲルはセラミックフォームに留まることなく下流側に流れることになる。このようにして光触媒脱臭により付着するヤニ状汚れはセルフクリーニングされると考えられる。 According to the method of the present invention, particularly when the photocatalyst layer is supported on a ceramic foam, the dirt-like soil adhering to the photocatalyst deodorization is self-cleaned and removed by the collision of the fine gel, so that the photocatalyst deodorization effect is not reduced. Can have an effect. Since the fine pores of the fine gel are smaller than the fine pores of titania and other photocatalysts, the contact area is larger than the photocatalyst side, the dirt stain moves to the fine gel side, and the fine gel does not stay on the ceramic foam but on the downstream side. Will flow. In this way, it is considered that the soil-like dirt adhering to the photocatalyst deodorization is self-cleaned.
また、微細ゲルもしくはゾル側からみると、空間移動中の引力による吸着に加えて衝突時にも吸着することになり、セラミックフォーム、活性炭層、もしくは無機繊維層中を通過する間の無数の衝突で吸着剤の持つ微細孔の使用率が著しく向上していると考えられる。すなわち、衝突・反動の滞留時間が発生するために接触時間が長くなり、微細孔の使用率が相乗的に向上していると考えられる。 In addition, when viewed from the fine gel or sol side, in addition to adsorption due to attractive force during space movement, it will also adsorb at the time of collision, and innumerable collisions while passing through the ceramic foam, activated carbon layer, or inorganic fiber layer It is considered that the usage rate of the fine pores of the adsorbent is remarkably improved. That is, it is considered that the contact time becomes longer due to the occurrence of the collision / rebound residence time, and the utilization rate of the micropores is synergistically improved.
以上のように、本発明方法によればセルフクリーニング効果による光触媒の脱臭効果の持続・延長（寿命延長）、そしてそれによるメンテナンス回数・コストの低減；ならびに脱臭フィルターにおける微細ゲルの接触時間延長による脱臭効果向上、湿気箱・ミキシングダクトの縮小、高効率化に伴う装置全体の縮小化（イニシャルおよびランニングコストの削減）、等を奏し得る。 As described above, according to the method of the present invention, the deodorizing effect of the photocatalyst by the self-cleaning effect is maintained and extended (life extension), and the maintenance frequency and cost are thereby reduced; and the deodorization by extending the contact time of the fine gel in the deodorizing filter. The improvement of the effect, the reduction of the humidity box / mixing duct, the reduction of the entire apparatus (reduction of initial and running costs) accompanying the increase in efficiency can be achieved.
本発明方法においては、排ガスに超高分子化合物を微細ゲルもしくはゾルとして噴霧するに先立ち、必要に応じて予め排ガスをスクラバーにより水洗浄し、ついで除湿することができる。 In the method of the present invention, prior to spraying the ultra-high molecular compound as fine gel or sol on the exhaust gas, the exhaust gas can be previously washed with a scrubber and then dehumidified as necessary.
また、必要に応じて上記除湿後に排ガスをバグフィルター、電気集塵機等で除塵処理した後に超高分子化合物を微細ゲルもしくはゾルとして噴霧することができる。 If necessary, after the dehumidification, the exhaust gas is dedusted with a bag filter, an electrostatic precipitator or the like, and then the ultra high molecular compound can be sprayed as a fine gel or sol.
以下、図１により本発明の脱臭処理方法の一実施態様について説明する。図１は本発明の一実施態様を示す概略図であり、脱臭処理される排ガスはスクラバー部（１）に導入され、水洗浄されフィルター層を通過した後、冷却式除湿部（２）で除湿される。ついで排ガスはバグフィルターで形成される除塵部（５）を通過した後、微細ゲルもしくはゾル噴霧部（３）より超高分子化合物の微細ゲルを噴霧される。ついで排ガスは微細ゲルもしくはゾルとの接触時間３〜４秒程度で脱臭フィルター層（４）に導入され。脱臭フィルター層はアルミナフォーム表面にチタニア光触媒が８００ｎｍ程度コーティングされて構成されている。 Hereinafter, one embodiment of the deodorizing treatment method of the present invention will be described with reference to FIG. FIG. 1 is a schematic view showing an embodiment of the present invention, where exhaust gas to be deodorized is introduced into a scrubber section (1), washed with water, passed through a filter layer, and then dehumidified by a cooling dehumidification section (2). Is done. Next, after the exhaust gas passes through the dust removing portion (5) formed by the bag filter, the fine gel of the ultra high molecular compound is sprayed from the fine gel or the sol spraying portion (3). Next, the exhaust gas is introduced into the deodorizing filter layer (4) in a contact time of about 3 to 4 seconds with the fine gel or sol. The deodorizing filter layer is constituted by coating the surface of alumina foam with a titania photocatalyst of about 800 nm.
本発明に係る排ガスの脱臭処理装置は、排ガスに微細ゲルもしくはゾルを噴霧するための微細ゲルもしくはゾル噴霧部および微細ゲルもしくはゾルを噴霧された排ガスを導入するための脱臭フィルター層を備えた排ガスの脱臭処理装置において、脱臭フィルター層は光触媒層がセラミックフォームに担持されてなる。さらに、本発明に係る排ガスの脱臭処理装置は微細ゲルもしくはゾル噴霧部の前段にガスを洗浄、特に水洗浄するためのスクラバー部をさらに備え、スクラバー部と微細ゲル噴霧部の間に除湿部をさらに備えうる。さらには、除湿部と微細ゲルもしくはゾル噴霧部の間に除塵部をさらに備えることもできる。 An exhaust gas deodorizing apparatus according to the present invention includes an exhaust gas provided with a fine gel or sol spraying part for spraying fine gel or sol on exhaust gas and a deodorizing filter layer for introducing exhaust gas sprayed with the fine gel or sol. In the deodorizing apparatus, the deodorizing filter layer is formed by supporting a photocatalyst layer on a ceramic foam. Furthermore, the deodorizing apparatus for exhaust gas according to the present invention further includes a scrubber part for cleaning gas, particularly water, in front of the fine gel or sol spraying part, and a dehumidifying part is provided between the scrubber part and the fine gel spraying part. Further, it can be prepared. Furthermore, a dust removing part can be further provided between the dehumidifying part and the fine gel or sol spraying part.
そして上述のように、上記の微細ゲルもしくはゾルは、好適には炭素原子に酸性基、中性基および塩基性基が結合してなる超高分子化合物の水溶液もしくは水分散体の噴霧により得られる。微細ゲルもしくはゾル噴霧部は通常の形式のスプレーを有するものであれば特に制限されない。また、光触媒層がセラミックフォームに担持された脱臭フィルター層も通常上記のとおりの構成としうる。スクラバー部、除湿部および除塵部の態様も、洗浄、除湿および除塵の機能を有する限り特に制限されず、公知の型式を採用しうる。 As described above, the fine gel or sol is preferably obtained by spraying an aqueous solution or aqueous dispersion of an ultrahigh molecular compound in which an acidic group, a neutral group and a basic group are bonded to a carbon atom. . The fine gel or sol spraying part is not particularly limited as long as it has a normal type spray. In addition, the deodorizing filter layer in which the photocatalyst layer is supported on the ceramic foam can be usually configured as described above. The aspect of the scrubber part, the dehumidifying part and the dust removing part is not particularly limited as long as it has the functions of cleaning, dehumidifying and dust removing, and a known model can be adopted.
本発明の排ガスの脱臭処理方法もしくは脱臭処理装置によれば、効率的に脱臭処理前に臭気濃度１０,０００以上の排ガスを処理後の臭気濃度を５００以下、好ましく３００以下とすることができる。 According to the exhaust gas deodorization treatment method or the deodorization treatment apparatus of the present invention, the odor concentration after treating exhaust gas having an odor concentration of 10,000 or more before the deodorization treatment can be reduced to 500 or less, preferably 300 or less.
以下、実施例により本発明をさらに詳細に説明する。
実施例１
図１に示す脱臭処理装置においてスクラバー部、除湿部および除塵部を除いて、微細ゲルもしくはゾル噴霧部および脱臭フィルター層（アルミナフォーム表面にチタニア光触媒が８００ｎｍ程度コーティング）を有する脱臭処理装置を用いて、超高分子化合物として「マイクロゲルS-AL200」（カルモア社製）を用いて、連続して電着塗装排ガス（排ガス流量５ｍ３/分）の脱臭処理を行なった。
Hereinafter, the present invention will be described in more detail with reference to examples.
Example 1
In the deodorizing apparatus shown in FIG. 1, except for the scrubber part, the dehumidifying part and the dust removing part, a deodorizing apparatus having a fine gel or sol spraying part and a deodorizing filter layer (a titania photocatalyst is coated on the alumina foam surface at about 800 nm) is used. Then, “Microgel S-AL200” (Calmore Co., Ltd.) was used as the ultra high molecular compound, and the deodorization treatment of the electrodeposition coating exhaust gas (exhaust gas flow rate 5 m 3 / min) was continuously performed.
（１）微細ゲルもしくはゾル噴霧部入口の臭気濃度１９７０（温度２５．３℃、湿度５４．３０％）；
脱臭フィルター層入口の臭気濃度１０９０（温度２５．２℃、湿度７２．１０％）；
脱臭フィルター層出口の臭気濃度９８５（温度３０．７℃、湿度５３．８０％）
（２）1時間経過後
微細ゲルもしくはゾル噴霧部入口の臭気濃度２０００（温度２５．０℃、湿度５６．００％）；
脱臭フィルター層入口の臭気濃度９９０（温度２５．０℃、湿度６８．２０％）；
脱臭フィルター層出口の臭気濃度８６０（温度３１．０℃、湿度５６．６０％）
（３）２時間経過後
微細ゲルもしくはゾル噴霧部入口の臭気濃度２０００（温度２４．４℃、湿度６０．１０％）；
脱臭フィルター層入口の臭気濃度８３０（温度２４．５℃、湿度７２．４０％）；
脱臭フィルター層出口の臭気濃度８４０（温度３０．５℃、湿度６３．６０％）
（４）９時間経過後
微細ゲルもしくはゾル噴霧部入口の臭気濃度２０００（温度３４．０℃、湿度９６．６０％）；
脱臭フィルター層入口の臭気濃度９２０（温度２３．８℃、湿度７４．９０％）；
脱臭フィルター層出口の臭気濃度６３５（温度２９．８℃、湿度６７．２０％）
比較例１
実施例１において、脱臭フィルター層（アルミナフォーム表面にチタニア光触媒が８００ｎｍ程度コーティング）のみを用いて、電着塗装排ガスの脱臭処理を行なった。
(1) Odor concentration at the entrance of the fine gel or sol spraying part 1970 (temperature 25.3 ° C., humidity 54.30%);
Deodorization filter layer inlet odor concentration 1090 (temperature 25.2 ° C, humidity 72.10%);
Odor concentration 985 at the outlet of the deodorizing filter layer (temperature 30.7 ° C, humidity 53.80%)
(2) After 1 hour has passed, the odor concentration at the entrance of the fine gel or sol spraying part 2000 (temperature 25.0 ° C., humidity 56.00%);
Deodorization filter layer inlet odor concentration 990 (temperature 25.0 ° C., humidity 68.20%);
Odor concentration 860 at the outlet of the deodorizing filter layer (temperature 31.0 ° C, humidity 56.60%)
(3) After 2 hours, the odor concentration at the entrance of the fine gel or sol spraying part is 2000 (temperature 24.4 ° C., humidity 60.10%);
Odor concentration 830 at the inlet of the deodorizing filter layer (temperature 24.5 ° C., humidity 72.40%);
Odor concentration 840 at outlet of deodorizing filter layer (temperature 30.5 ° C, humidity 63.60%)
(4) After 9 hours, the odor concentration at the entrance of the fine gel or sol spraying part is 2000 (temperature 34.0 ° C., humidity 96.60%);
Odor concentration 920 at the inlet of the deodorizing filter layer (temperature 23.8 ° C., humidity 74.90%);
Odor concentration 635 (temperature 29.8 ° C, humidity 67.20%) at the deodorizing filter layer outlet
Comparative Example 1
In Example 1, the deodorizing treatment of the electrodeposition coating exhaust gas was performed using only the deodorizing filter layer (the alumina foam surface was coated with a titania photocatalyst of about 800 nm).
（１）脱臭フィルター層入口の臭気濃度２０００（温度２３．０℃、湿度１００％）；
脱臭フィルター層出口の臭気濃度１１７７（温度４２．０℃、湿度２０％）
（２）５０分経過後
脱臭フィルター層入口の臭気濃度２０００（温度１２．０℃、湿度１００％）；
脱臭フィルター層出口の臭気濃度１３１５（温度４０．０℃、湿度１３％）
（３）１時間１５分経過後
脱臭フィルター層入口の臭気濃度２０００（温度２７．０℃、湿度１００％）；
脱臭フィルター層出口の臭気濃度１７２０（温度４２．０℃、湿度２３％）
(1) Odor concentration at the entrance of the deodorizing filter layer 2000 (temperature 23.0 ° C., humidity 100%);
Odor concentration 1177 at the outlet of the deodorizing filter layer (temperature 42.0 ° C, humidity 20%)
(2) After 50 minutes, the odor concentration 2000 at the entrance of the deodorizing filter layer (temperature 12.0 ° C., humidity 100%);
Odor concentration 1315 at the deodorizing filter layer outlet (temperature 40.0 ° C, humidity 13%)
(3) After 1 hour and 15 minutes have passed, the odor concentration at the entrance of the deodorizing filter layer is 2000 (temperature: 27.0 ° C., humidity: 100%);
Odor concentration 1720 at the outlet of the deodorizing filter layer (temperature 42.0 ° C, humidity 23%)
本発明によれば、特に塗装、印刷もしくは接着工程等からの揮発性有機化合物を含有する排ガスを効率的に脱臭処理しうる方法を提供し得る。 According to the present invention, it is possible to provide a method capable of efficiently deodorizing an exhaust gas containing a volatile organic compound particularly from a painting, printing or adhesion process.
１ スクラバー部
２ 除湿部
３ 微細ゲルもしくはゾル噴霧部
４ 脱臭フィルター層
５ 除塵部
DESCRIPTION OF
Claims (21)
しくは炭化ケイ素から選ばれる請求項１０記載の排ガスの脱臭処理方法。 The method for deodorizing exhaust gas according to claim 10, wherein the ceramic foam is selected from alumina, cordierite, silica-alumina, zirconia or silicon carbide.
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| JP2007084218A JP2008238092A (en) | 2007-03-28 | 2007-03-28 | Deodorization treatment method of tail gas |
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| JP2007084218A JP2008238092A (en) | 2007-03-28 | 2007-03-28 | Deodorization treatment method of tail gas |
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| JP2008238092A true JP2008238092A (en) | 2008-10-09 |
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| JP2007084218A Pending JP2008238092A (en) | 2007-03-28 | 2007-03-28 | Deodorization treatment method of tail gas |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009011889A (en) * | 2007-07-02 | 2009-01-22 | Kanto Auto Works Ltd | Exhaust gas deodorization treatment system for coating drying furnace |
| JP2010075879A (en) * | 2008-09-26 | 2010-04-08 | Cs Engineering:Kk | Method of deodorizing exhaust |
| JP2012012375A (en) * | 2010-06-30 | 2012-01-19 | Sanei Kagaku Kk | Hair treating agent and hair deodorant formulated with polymer deodorizing component |
| CN103071374A (en) * | 2012-12-14 | 2013-05-01 | 杭州洁天环保科技有限公司 | Washing-sectional photochemical integrated odor purifying device and method thereof |
| CN105709577A (en) * | 2016-04-29 | 2016-06-29 | 深圳市百欧森环保科技股份有限公司 | Refuse leachate malodorous gas purification complete device and refuse leachate malodorous gas purification method |
| CN107631318A (en) * | 2017-10-26 | 2018-01-26 | 河南高盛企业管理咨询有限公司 | Removable rubbish emission-control equipment |
| CN109364716A (en) * | 2018-11-13 | 2019-02-22 | 肖江江 | A kind of day refuse processing peculiar smell absorption plant |
| CN110732229A (en) * | 2019-11-14 | 2020-01-31 | 盐城市迎凯涂装设备有限公司 | post-coating-production engineering air purification system |
| CN113599938A (en) * | 2021-09-01 | 2021-11-05 | 绍兴金楚印染有限公司 | Printing and dyeing forming machine exhaust treatment device |
| CN116713291A (en) * | 2023-08-03 | 2023-09-08 | 张家港市天天环保设备有限公司 | Harmless garbage treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103071374A (en) * | 2012-12-14 | 2013-05-01 | 杭州洁天环保科技有限公司 | Washing-sectional photochemical integrated odor purifying device and method thereof |
| CN105709577A (en) * | 2016-04-29 | 2016-06-29 | 深圳市百欧森环保科技股份有限公司 | Refuse leachate malodorous gas purification complete device and refuse leachate malodorous gas purification method |
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| CN107631318B (en) * | 2017-10-26 | 2019-08-06 | 上海启菲特环保生物技术有限公司 | Removable rubbish emission-control equipment |
| CN109364716A (en) * | 2018-11-13 | 2019-02-22 | 肖江江 | A kind of day refuse processing peculiar smell absorption plant |
| CN110732229A (en) * | 2019-11-14 | 2020-01-31 | 盐城市迎凯涂装设备有限公司 | post-coating-production engineering air purification system |
| CN113599938A (en) * | 2021-09-01 | 2021-11-05 | 绍兴金楚印染有限公司 | Printing and dyeing forming machine exhaust treatment device |
| CN116713291A (en) * | 2023-08-03 | 2023-09-08 | 张家港市天天环保设备有限公司 | Harmless garbage treatment device |
| CN116713291B (en) * | 2023-08-03 | 2023-10-31 | 张家港市天天环保设备有限公司 | Harmless garbage treatment device |
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