JPS61136425A - Compact catalytic wet deodorizing apparatus - Google Patents

Compact catalytic wet deodorizing apparatus

Info

Publication number
JPS61136425A
JPS61136425A JP59258899A JP25889984A JPS61136425A JP S61136425 A JPS61136425 A JP S61136425A JP 59258899 A JP59258899 A JP 59258899A JP 25889984 A JP25889984 A JP 25889984A JP S61136425 A JPS61136425 A JP S61136425A
Authority
JP
Japan
Prior art keywords
catalyst
exhaust gas
deodorizing apparatus
absorbing solution
catalyst holding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59258899A
Other languages
Japanese (ja)
Inventor
Takashige Matsuyama
松山 孝重
Eiji Toyoda
豊田 英次
Toshiaki Yonemitsu
米満 利明
Kazuo Mizutani
水谷 和夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurabo Industries Ltd
Kurashiki Spinning Co Ltd
Toyota Motor Corp
Original Assignee
Kurabo Industries Ltd
Kurashiki Spinning Co Ltd
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kurabo Industries Ltd, Kurashiki Spinning Co Ltd, Toyota Motor Corp filed Critical Kurabo Industries Ltd
Priority to JP59258899A priority Critical patent/JPS61136425A/en
Publication of JPS61136425A publication Critical patent/JPS61136425A/en
Pending legal-status Critical Current

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  • Treating Waste Gases (AREA)

Abstract

PURPOSE:To eliminate the generation of sludge and to make a deodorizing apparatus free from maintenance, in a Fenton deodorizing apparatus, by providing a catalyst holding pipe below the exhaust gas inlet port of a perforated plate absorbing tower. CONSTITUTION:A catalyst holding pipe 9 having a tapered upper part is provided below the exhaust gas inlet duct 5 of an absorbing tower 1 having perforated plates 6 therein and packed with a ferrous solid oxidizing catalyst 10. An absorbing solution 11 using a Fenton reagent is sprayed to the perforated plates 6 from spray nozzles 7 and brought into gas-liquid contact with exhaust gas containing a malodorous component generated in a casting factory and introduced from a fan 4. The absorbing solution 11 after the contact with exhaust gas is guided by the catalyst holding pipe 9 to be returned to an absorbing solution tank 2 through the catalyst 10. Because the absorbing solution 11 is contacted with the catalyst 10, the malodorous component therein is removed therein and the generation of sludge is suppressed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明岐、フェントン脱臭装置を曖良した、固形触媒湿
式脱臭装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a solid catalyst wet deodorizing device which is an improved version of the Fenton deodorizing device.

(従来の技術) 鋳物工程から排出されるフェノールを主体とする排ガス
の脱臭装置は、通常、7エントン試薬(過酸化水素に硫
酸第一鉄をM!!#性溶液中で加えたもの)による酸化
脱臭享で5i=している0しかしながらこの7工ントン
脱臭装置社、反応過程でスラッジ(金属塩−酸化鉄)が
発生するので、このスラッジが吸収塔の気・液接触部(
MA臭成分Wk収部分)において目詰りが生じな−よう
にするなめ、気・液接触部を多孔板で形成されることに
なる。
(Prior art) Deodorizing equipment for exhaust gas mainly composed of phenol discharged from the foundry process usually uses a 7-entone reagent (hydrogen peroxide with ferrous sulfate added in an M!!# solution). However, in this 7-ton deodorizing equipment company, sludge (metal salt-iron oxide) is generated during the reaction process, so this sludge is transferred to the gas-liquid contact area of the absorption tower (
In order to prevent clogging in the MA odor component Wk storage area), the gas/liquid contact area is formed of a perforated plate.

(発明が解決しようとする問題点) しかしながらこのように気・液接触部を多孔板で形成し
ても目詰り社主ずるものであることから、一定の性能を
維持するために、多孔板、搭底、循環系の清掃を大小す
ことかできず、し念がって多大の保全工数を必要とし七
〇また従来の7エントン脱臭装置1[H7エントン試薬
として過酸化水素、硫酸、硫化1111鉄、および力性
ソーダの4系統が必要であり、し念がってこれら各系統
ごとにm*糸系統必要となるので、回路が複雑となる上
に、装置がコスト高となる問題があっな。
(Problems to be Solved by the Invention) However, even if the gas/liquid contact area is formed using a perforated plate, clogging may occur, so in order to maintain a certain level of performance, perforated plates, The cleaning of the bottom of the ship and the circulation system can only be done to a greater or lesser extent, and a large amount of maintenance work is required. Four systems, one for iron and one for hydric soda, are required, and each of these systems requires an m*thread system, which leads to the problem that the circuit is complicated and the equipment is expensive. Na.

本発明はこれらの問題点を解決するために成され念もの
であり、7エントン試薬使用の湿式脱臭装置の欠点であ
るスラッジの発生な皆無にして、フェントンの薬液系統
の変更なしにフェントン湿式脱臭装置の改造もしくは転
用を前提としなメンテナンスフリーの脱臭装置を提供す
ることを目的とする。
The present invention has been devised to solve these problems, and it is possible to use the Fenton wet deodorization method without changing the Fenton chemical system without generating sludge, which is a disadvantage of wet deodorization equipment using 7-entone reagents. The purpose of the present invention is to provide a maintenance-free deodorizing device that does not require modification or diversion of the device.

(問題点を解決するなめの手段) 本発明は上記問題点を解決するための手段として、内部
に多孔板を設は慶吸収塔の排ガス導入口の下部に触媒保
持管を設け、該触媒保持管の内部に触媒を保持したもの
である。
(Means for Solving the Problems) The present invention provides a method for solving the above problems by providing a perforated plate inside and a catalyst holding pipe at the bottom of the exhaust gas inlet of the Kei-absorption tower. The catalyst is held inside the tube.

(作用) このような構成とすれば、排ガスに接触したあと吸収液
槽に戻る吸収液が触媒保持管を通るとき、この触媒保持
管内に保持されな触媒と接するので、ここで悪臭成分が
wk宍され、スラッジの発生が抑制されることになる。
(Function) With such a configuration, when the absorption liquid returns to the absorption liquid tank after contacting the exhaust gas and passes through the catalyst holding tube, it comes into contact with the catalyst that is not held in the catalyst holding tube, so that the malodorous components are This means that the generation of sludge is suppressed.

(実鴫例) 次に、本発明の一実施例を第1図について説明する。1
け吸収塔であって、下端は吸収液槽2に一体化してあり
、上端には排気口3が設けられなものである。吸収塔1
の側部にゆ途中に7アン4を設けた排ガス導入口として
のダクト5が取付けられており、被処理気体である排ガ
スを吸収塔1内に導入するようになっているO吸収塔1
の内部のダクト5の開口部より上方の部分には、下から
順次、3枚の多孔板6.6.6と、吸収液の噴射ノズル
7、脱湿棚8が設けられ、ダクト5から吸収塔1内に入
った排ガス蝶これらを通過して排気口3に向かうように
なっている。
(Example) Next, an embodiment of the present invention will be described with reference to FIG. 1
The absorption tower has a lower end integrated with an absorption liquid tank 2 and an exhaust port 3 at the upper end. Absorption tower 1
A duct 5 as an exhaust gas inlet is installed on the side of the O absorption tower 1 with a 7-inch hole 4 in the middle, and the exhaust gas, which is the gas to be treated, is introduced into the absorption tower 1.
Above the opening of the duct 5 inside the duct 5, three perforated plates 6, 6, 6, an absorption liquid injection nozzle 7, and a dehumidifying shelf 8 are installed in order from the bottom. The exhaust gas that has entered the tower 1 passes through these and heads toward the exhaust port 3.

吸収塔1の内部でダクト5の下方部位には、一部(上部
)をテーパにした触媒保持管9が設けられている。そし
てこの触媒保持t9の直管部の内部には触媒10M保持
されて−る。触媒保持管9は上部がテーパになっている
ので、噴霧ノズル7から噴霧され多孔板6.6.6を通
過した吸収液は全部このテーパ部に案内され、触媒10
な通って吸収液槽2に入ることになる。吸収液槽2内に
は吸収液11が、触媒保持管9の下部を浸す程度の充分
の量で満しである0 吸収液槽2の一部には、途中にポンプ12を接続したパ
イプ13のF端が連設させである。このパイプ13の上
端は、前述の噴霧ノズル7に接続している。吸収液槽2
の上部には過酸化水素14を充填したタンク15S設け
られ、このタンク15の底部と吸収液槽2の上部との間
には、途中にポンプ16を接触しなパイプ17が設けら
れている0ポモ 吸収液槽2内の吸収液11の過酸化水素の濃度を検出す
るセンナ18の指令に従って、作動することになる。1
9憧ドレン槽で、吸収液槽2との間に、途中にパルプ加
を設けたパイプ21で連通させである。
Inside the absorption tower 1, below the duct 5, there is provided a catalyst holding pipe 9 whose part (upper part) is tapered. A catalyst 10M is held inside the straight pipe portion of this catalyst holding t9. Since the catalyst holding tube 9 has a tapered upper part, all the absorption liquid that has been sprayed from the spray nozzle 7 and passed through the perforated plate 6.6.6 is guided to this tapered part, and the catalyst 10
The absorbent liquid enters the absorption liquid tank 2 through the The absorption liquid tank 2 is filled with the absorption liquid 11 in an amount sufficient to submerge the lower part of the catalyst holding tube 9. A part of the absorption liquid tank 2 is filled with a pipe 13 with a pump 12 connected in the middle. The F end of is connected. The upper end of this pipe 13 is connected to the aforementioned spray nozzle 7. Absorption liquid tank 2
A tank 15S filled with hydrogen peroxide 14 is provided at the top of the tank 15, and a pipe 17 is provided between the bottom of the tank 15 and the top of the absorption liquid tank 2, without contacting the pump 16. It operates according to the command from the sensor 18 that detects the concentration of hydrogen peroxide in the absorption liquid 11 in the POMO absorption liquid tank 2. 1
The drain tank 9 is connected to the absorbing liquid tank 2 through a pipe 21 with a pulp pipe installed in the middle.

このように構成されたこの装置は、次のように使用され
る。すなわちポンプ稔を作動させ、吸収液11をgi取
液槽2から噴霧ノズル7に供給し、ここで多孔板6.6
.6に向けて噴霧させ、触媒保持119で回収して吸収
液槽2に循環させ、一方、ファン4を作動させて悪臭成
分を含有する排ガスをその循環中に供給する0排ガスと
してけ、シェル砂を使用する鋳造工場の注湯、冷却1枠
ばらしなどの工程より発生するものの処理をする。
This device configured in this way is used as follows. That is, the pump terminal is operated to supply the absorption liquid 11 from the GI liquid collection tank 2 to the spray nozzle 7, where the perforated plate 6.6
.. 6, collected by the catalyst holder 119, and circulated to the absorption liquid tank 2. On the other hand, the fan 4 is operated to turn the exhaust gas containing malodorous components into 0 exhaust gas to be supplied during the circulation, and the shell sand is Processes waste generated from processes such as pouring, cooling, and disassembling one frame in foundries that use molten metal.

排ガスに接触したのち触媒保持管9により案内され、触
媒10を通る吸収液は、テーパの角度(テーパ比)によ
って処理状況が変化する0テp<比として望ましくけj
ないし1/3、さらに好ましくは2/3程度にするのが
よいOfな触媒としては、鉄系固形酸化触媒を、充填量
をSv値T 50.000〜200.000 hr−’
 K、サラニ好マシ〈は120.000 hr  に設
定するのがよい。
After contacting the exhaust gas, the absorption liquid is guided by the catalyst holding tube 9 and passes through the catalyst 10, so that the treatment condition changes depending on the taper angle (taper ratio).
As an off-catalyst that is preferably about 1/3 to 1/3, more preferably about 2/3, an iron-based solid oxidation catalyst is used, and the filling amount is Sv value T 50.000 to 200.000 hr-'
K. It is better to set it to 120,000 hr.

第2図は排気口3における出口臭気濃度と触媒保持管9
0テーパ比との関係を示すグラフであり、ta3図は過
酸化水素の消゛a景とテーパ比との関係を示すグラフで
ある◎これらのグラフを見れば、上述しな数値の適当値
を理解することができる。
Figure 2 shows the outlet odor concentration at the exhaust port 3 and the catalyst holding pipe 9.
This is a graph showing the relationship between the taper ratio and the 0 taper ratio, and the TA3 diagram is a graph showing the relationship between the disappearance of hydrogen peroxide and the taper ratio.If you look at these graphs, you can find appropriate values for the numerical values mentioned above. I can understand.

次の表は本発明に係る脱臭isと従来の7工ントン式脱
実装曾との比較を行なったものである◎比較条件として
は、排ガスを鋳造枠ばらしの際に発生するも′のを使用
し、排ガスの貴社2000 m’/min %触媒保持
管9のテーパ比1/1、触媒ox tooolSsv 
値h 120.000hr”C、$) ル。
The following table compares the deodorizing IS according to the present invention with the conventional 7-ton de-mounting system. ◎As a comparison condition, the exhaust gas generated when dismantling the casting frame was used. 2000 m'/min% of exhaust gas, taper ratio of catalyst holding tube 9 1/1, catalyst ox tooolSsv
Value h 120.000hr”C, $) le.

(発明の効果) 本発明は以上説明しなような構成と作用を有するもので
あるから、従来の7エントjン脱実装置に比してW造が
著しく簡単になり、しかもメンテナンス7リーの脱臭装
置を得ることができる0
(Effects of the Invention) Since the present invention has the structure and operation as described above, W construction is significantly simpler than the conventional 7-ent unpacking device, and maintenance is also reduced. You can get a deodorizing device0

【図面の簡単な説明】[Brief explanation of drawings]

III図は本発明の一実権例の系統図、第2図および第
3図は本発明に係る脱臭装置の性能を示すグラフである
。 1・−吸収塔      2−吸収液槽   ′5・−
ダクト       6・・・多孔板7・・・噴射ノズ
ル    9・・・触媒保持管10・−触媒 特許出願人  ト胃夕自動車株式会社 同    倉敷紡績株式会社 牙1図 1ソ 1、、、oν収r答7  ・・・噴 奥寸ノス°ル2・
・・吸収液槽  9・・・触媒イ呆特管589.−タ”
 り  ト        10 ・・・ 貧食 媒6
 ・・・乏夕・子L 版 牙2図 牙3図
Figure III is a system diagram of one practical example of the present invention, and Figures 2 and 3 are graphs showing the performance of the deodorizing device according to the present invention. 1.- Absorption tower 2- Absorption liquid tank '5.-
Duct 6... Perforated plate 7... Injection nozzle 9... Catalyst holding tube 10 - Catalyst patent applicant Toshi Yu Jidosha Co., Ltd. Kurashiki Boseki Co., Ltd. Answer 7...Okusun Nosuru 2.
... Absorption liquid tank 9 ... Catalyst Ie special pipe 589. -ta”
Rito 10 ... poor food medium 6
・・・Hoyu・子L Banga 2 illustration Toga 3 illustration

Claims (2)

【特許請求の範囲】[Claims] (1)内部に多孔板を設けた吸収塔の排ガス導入口の下
部に触媒保持管を設け、該触媒保持管の内部に触媒を保
持したことを特徴とする固形触媒湿式脱臭装置。
(1) A solid catalyst wet deodorizing device characterized in that a catalyst holding tube is provided below the exhaust gas inlet of an absorption tower provided with a perforated plate inside, and a catalyst is held inside the catalyst holding tube.
(2)触媒保持管の一部がテーパ状となっている特許請
求の範囲第1項記載の固形触媒湿式脱臭装置。
(2) The solid catalyst wet deodorizing device according to claim 1, wherein a portion of the catalyst holding tube is tapered.
JP59258899A 1984-12-07 1984-12-07 Compact catalytic wet deodorizing apparatus Pending JPS61136425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59258899A JPS61136425A (en) 1984-12-07 1984-12-07 Compact catalytic wet deodorizing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59258899A JPS61136425A (en) 1984-12-07 1984-12-07 Compact catalytic wet deodorizing apparatus

Publications (1)

Publication Number Publication Date
JPS61136425A true JPS61136425A (en) 1986-06-24

Family

ID=17326576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59258899A Pending JPS61136425A (en) 1984-12-07 1984-12-07 Compact catalytic wet deodorizing apparatus

Country Status (1)

Country Link
JP (1) JPS61136425A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101785966A (en) * 2010-03-02 2010-07-28 浙江菲达环保科技股份有限公司 Method of advanced oxidation for NO in flue gas and device thereof
CN105498495A (en) * 2015-12-31 2016-04-20 中山大学 Device for treating waste gas by Fenton oxidation
CN114887473A (en) * 2022-04-18 2022-08-12 江苏省环境工程技术有限公司 Sand casting odor purification system and treatment process thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101785966A (en) * 2010-03-02 2010-07-28 浙江菲达环保科技股份有限公司 Method of advanced oxidation for NO in flue gas and device thereof
CN105498495A (en) * 2015-12-31 2016-04-20 中山大学 Device for treating waste gas by Fenton oxidation
CN114887473A (en) * 2022-04-18 2022-08-12 江苏省环境工程技术有限公司 Sand casting odor purification system and treatment process thereof

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