JP6573298B1 - Ozone plasma treatment apparatus and oxidative decomposition treatment method using the same - Google Patents
Ozone plasma treatment apparatus and oxidative decomposition treatment method using the same Download PDFInfo
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000006864 oxidative decomposition reaction Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009832 plasma treatment Methods 0.000 title description 3
- 239000007789 gas Substances 0.000 claims abstract description 109
- 239000000126 substance Substances 0.000 claims abstract description 73
- 239000007787 solid Substances 0.000 claims abstract description 32
- 150000002013 dioxins Chemical class 0.000 claims abstract description 29
- 150000002831 nitrogen free-radicals Chemical class 0.000 claims abstract description 13
- 239000011949 solid catalyst Substances 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011343 solid material Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 150000002697 manganese compounds Chemical class 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Physical Or Chemical Processes And Apparatus (AREA)
- Plasma Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
【課題】本発明は、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質を固形物の状態又は固形物に吸着させた状態で酸化分解処理することができ、さらには、密閉系において、系内に電気エネルギーの注入のみにより、前記処理すべき物質を酸化分解処理することができるオゾン・プラズマ装置及びこれを使用した酸化分解処理方法を提供する。【解決手段】処理すべき物質を放電により発生するオゾン及び窒素ラジカルなどの活性種を含む活性ガスにより酸化分解処理するオゾン・プラズマ装置１であって、放電によりオゾン及び窒素ラジカルなどの活性種を含む活性ガスを発生させる放電部５と、前記処理すべき物質を含む固形物を収容する通気性を有する収容部６と、前記放電部５での放電により発生した活性ガスが、前記収容部６を通過して循環する密閉経路を形成する循環ダクト２と、前記循環ダクト２内で気体を循環させるファン３と、を備える。【選択図】図１[PROBLEMS] To oxidatively decompose a substance to be treated such as dioxins in incineration ash, odor components of dried sludge, etc. in a solid state or in a state where the solid substance is adsorbed. In a closed system, an ozone plasma apparatus capable of oxidatively decomposing the substance to be processed by only injecting electric energy into the system, and an oxidative decomposition method using the same are provided. An ozone plasma apparatus 1 that oxidatively decomposes a substance to be treated with an active gas containing active species such as ozone and nitrogen radicals generated by discharge, wherein the active species such as ozone and nitrogen radicals are discharged by discharge. The discharge part 5 that generates the active gas to be contained, the air-permeable storage part 6 that stores the solid substance containing the substance to be processed, and the active gas generated by the discharge in the discharge part 5 are the storage part 6. A circulation duct 2 that forms a sealed path that circulates through the circulation duct 2 and a fan 3 that circulates gas in the circulation duct 2. [Selection] Figure 1
Description
本発明は、焼却灰中のダイオキシン類等の有害物質や乾燥汚泥の臭気成分等の処理すべき物質を外部へ漏洩させることなく密閉系内で酸化分解処理することができるオゾン・プラズマ処理装置及びこれを使用した酸化分解処理方法に関する。 The present invention relates to an ozone plasma processing apparatus capable of performing oxidative decomposition treatment in a closed system without causing leakage of harmful substances such as dioxins in incinerated ash and odor components of dried sludge to the outside, and The present invention relates to an oxidative decomposition method using the same.
従来、空気の脱臭のために図２に示されるような、臭気成分を含む気体に放電し、放電により発生するオゾンおよび窒素ラジカルによりその臭気成分を酸化分解するオゾン・プラズマ処理装置であって、臭気成分を含む気体が流れるメインダクト５１と、このメインダクト５１中を流れる臭気成分を含む気体に放電するための放電極５２と、この放電極５２により放電された気体が流れ込み再びメインダクト５１に戻るようにメインダクト５１と連通しているリターンダクト５３と、これらメインダクト５１およびリターンダクト５３中に気体を流すためのファン５４と、放電により発生するオゾンおよび窒素ラジカルによる臭気成分の酸化分解を促進するために設けられる触媒５５と、気体の流れを制御するためのダンパ５６を備えており、脱臭効率が良く、放電極５２への汚れの付着を防止できるオゾン・プラズマ処理装置が開示されている。 Conventionally, as shown in FIG. 2 for deodorizing air, an ozone plasma processing apparatus that discharges to a gas containing an odor component and oxidatively decomposes the odor component by ozone and nitrogen radicals generated by the discharge, A main duct 51 in which a gas containing an odor component flows, a discharge electrode 52 for discharging the gas containing the odor component flowing in the main duct 51, and a gas discharged by the discharge electrode 52 flow into the main duct 51 again. A return duct 53 communicating with the main duct 51 so as to return, a fan 54 for flowing gas into the main duct 51 and the return duct 53, and oxidative decomposition of odor components by ozone and nitrogen radicals generated by discharge. It has a catalyst 55 provided for promotion and a damper 56 for controlling the flow of gas. Deodorizing efficiency is good, ozone plasma treatment apparatus capable of preventing the adhesion of dirt to the discharge electrode 52 is disclosed.
また、図３に示されるような、臭気成分のような処理すべき成分を含む気体を低湿度にし、維持するためのヒータ（除湿手段）５７、その湿度変化を検出し除湿手段を制御する湿度センサー（湿度検出手段）５８および湿度制御装置（湿度制御手段）５９を備えており、除湿された気体を循環することにより熱エネルギー損失を防止するためのリターンダクト６０と、放電極６１に付着した塩類を飛散除去するために、放電極部６２を通過する気体の線速度を調節する被処理気体量調整ダンパ６３、リターン量調整ダンパ６４または排気量調整ダンパ６５を備える構成であって、放電極表面の絶縁低下による放電停止や放電異常等を抑え放電を維持することにより、オゾン及びラジカルを高効率に発生させることができるオゾン・プラズマ処理装置が開示されている。 Further, as shown in FIG. 3, a heater (dehumidifying means) 57 for lowering and maintaining a gas containing a component to be processed such as an odor component, and humidity for detecting the humidity change and controlling the dehumidifying means. A sensor (humidity detection means) 58 and a humidity control device (humidity control means) 59 are provided, and are attached to a discharge duct 61 and a return duct 60 for preventing thermal energy loss by circulating dehumidified gas. In order to scatter and remove salts, the gas flow rate adjusting damper 63, the return amount adjusting damper 64, or the exhaust amount adjusting damper 65 for adjusting the linear velocity of the gas passing through the discharge electrode part 62 are provided, and the discharge electrode Ozone plasma treatment that can generate ozone and radicals with high efficiency by maintaining discharge by suppressing discharge stop and discharge abnormality due to surface insulation degradation. Apparatus is disclosed.
さらに、図４に示されるような、処理すべき成分を含む気体に対して放電部６６と、放電部６６で生じた活性ガスを反応させる触媒部６７とを有する装置であって、処理すべき成分を含む気体を導入する被処理気体導入路６８と、放電部６６、触媒部６７を通過した処理後の気体を放電部６６、触媒部６７に循環させるリターン気体導入路６９と、被処理気体導入路６８の開閉を行う被処理入口ダンパ７１と、リターン気体導入路６９の開閉を行うリターン口ダンパ７０と、処理後気体の排気路の開閉を行う排気口ダンパ７２と、被処理気体の濃度を検出するにおいセンサー７３と、このセンサーの値が濃度レベル以下に達した場合、被処理入口ダンパ７１と排気口ダンパ７２を閉じ、リターン口ダンパ７０を開放し、放電部６６、触媒部６７に被処理気体を循環させる制御部７４を備えており、ガス処理に伴う触媒劣化を抑制すると共に、安定したガス処理を継続させ、劣化した触媒性能を回復させて触媒の寿命を延ばすことができる放電式ガス処理装置が開示されている。 Furthermore, as shown in FIG. 4, the apparatus includes a discharge unit 66 and a catalyst unit 67 that reacts an active gas generated in the discharge unit 66 with a gas containing a component to be processed. A gas to be treated introduction path 68 for introducing a gas containing components, a return gas introduction path 69 for circulating the treated gas that has passed through the discharge portion 66 and the catalyst portion 67 to the discharge portion 66 and the catalyst portion 67, and a gas to be treated. A treated inlet damper 71 that opens and closes the introduction path 68, a return opening damper 70 that opens and closes the return gas introduction path 69, an exhaust opening damper 72 that opens and closes the exhaust path of the treated gas, and the concentration of the treated gas The odor sensor 73 that detects the odor and when the value of the sensor reaches the concentration level or less, the treated inlet damper 71 and the exhaust outlet damper 72 are closed, the return opening damper 70 is opened, the discharge section 66, the catalyst section 6 Is provided with a control unit 74 for circulating the gas to be treated, and it is possible to suppress the catalyst deterioration accompanying the gas processing and to continue the stable gas processing to recover the deteriorated catalyst performance and extend the life of the catalyst. A discharge-type gas processing apparatus is disclosed.
しかしながら、図２乃至図４に示される処理装置では、処理すべき物質は気体であり、固形物あるいは固形物に含まれた処理すべき物質を酸化分解処理することはできないという問題があった。 However, the processing apparatus shown in FIGS. 2 to 4 has a problem that the substance to be processed is a gas, and the solid substance or the substance to be processed contained in the solid substance cannot be subjected to oxidative decomposition.
そのため、基準値を超える含有量のダイオキシン類が検出された焼却灰は適切な処理方法はなく通常、廃棄物処理法における特別管理廃棄物として処理しているが、処理コストが大きくなっていた。また、排水処理場から発生する汚泥を燃料として使用する場合には、脱水後乾燥処理した固形状乾燥汚泥では臭気が発生するため保管が難しく、一般的には、炭化処理まで行う必要があった。その場合、炭化処理された汚泥は乾燥処理のみの汚泥に比べて燃料としての発熱量が低いだけでなく、汚泥の炭化処理に必要な熱エネルギーは乾燥処理の場合に比べて大きく、処理コストも大きくなっていた。 For this reason, incineration ash in which dioxins with a content exceeding the standard value are detected does not have an appropriate treatment method, and is usually treated as specially managed waste in the waste treatment method, but the treatment cost is high. In addition, when sludge generated from a wastewater treatment plant is used as a fuel, it is difficult to store solid dried sludge that has been dehydrated and dried, and it is therefore difficult to store it. . In that case, carbonized sludge not only has a low calorific value as fuel compared to sludge that is only dried, but also the heat energy required for carbonizing sludge is larger than that for drying, and the processing cost is also high. It was getting bigger.
本発明は、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質を固形物の状態又は固形物に吸着させた状態で酸化分解処理することができ、さらには、密閉系において、系内に電気エネルギーの注入のみにより、前記処理すべき物質を酸化分解処理することができるオゾン・プラズマ装置及びこれを使用した酸化分解処理方法を提供することを目的とするものである。 The present invention can oxidatively decompose a substance to be treated such as dioxins in incinerated ash and odor components of dried sludge in a solid state or a state in which the substance is adsorbed to the solid matter. An object of the present invention is to provide an ozone plasma apparatus that can oxidatively decompose the substance to be processed by only injecting electric energy into the system, and an oxidative decomposition method using the same.
請求項１に記載のオゾン・プラズマ装置は、処理すべき物質を放電により発生するオゾン及び窒素ラジカルなどの活性種を含む活性ガスにより酸化分解処理するオゾン・プラズマ装置であって、放電によりオゾン及び窒素ラジカルなどの活性種を含む活性ガスを発生させる放電部と、前記放電部の下流側に配置され、前記処理すべき物質を含む固形物を収容する通気性を有する収容部と、前記収容部の下流側に配置され、前記収容部から揮散あるいは飛散する前記処理すべき物質を捕捉し酸化分解処理を促進するための触媒部と、前記放電部での放電により発生した活性ガスが、前記収容部を通過して循環する密閉経路を形成する循環ダクトと、前記密閉経路内を流れる活性ガスを含む気体の温度を低下させるための冷却機構と、前記循環ダクト内で気体を循環させるファンと、を備え、放電により発生した活性ガスが、前記収容部、前記触媒部、前記冷却機構、前記放電部を順に通過することにより、前記密閉経路内を繰り返し循環するような構成とされていることを特徴とするものである。 The ozone plasma apparatus according to claim 1 is an ozone plasma apparatus that oxidatively decomposes a substance to be processed by an active gas containing active species such as ozone and nitrogen radicals generated by discharge, A discharge part for generating an active gas containing active species such as nitrogen radicals, a storage part that is disposed downstream of the discharge part and has a breathability for storing a solid substance containing the substance to be treated; and the storage part And a catalyst part for capturing the substance to be treated that volatilizes or scatters from the accommodation part and promotes oxidative decomposition treatment, and an active gas generated by discharge in the discharge part is contained in the accommodation part. a circulation duct that forms a closed path for circulating through the parts, a cooling mechanism for lowering the temperature of the gas containing active gas flowing through the closed path, the circulation da Comprising a fan for circulating the gas in the preparative, the active gas generated by discharge, the receiving portion, the catalytic portion, the cooling mechanism, by passing through the discharge portion in this order, repeating the closed path circulating It is characterized by being configured as described above .
請求項２に記載のオゾン・プラズマ装置は、請求項１に記載のオゾン・プラズマ装置において、前記循環ダクトに開口部が形成され、前記収容部は、前記開口部を密閉可能な蓋体と、前記開口部から出し入れ可能な通気性容器とを備え、前記通気性容器の直近下流側に前記密閉経路内を流れる活性ガスを含む気体の流れを均一にするような整流板を配置したことを特徴とするものである。 The ozone plasma device according to claim 2 is the ozone plasma device according to claim 1, wherein an opening is formed in the circulation duct, and the housing portion includes a lid that can seal the opening, An air permeable container that can be taken in and out from the opening, and a rectifying plate is disposed on the immediate downstream side of the air permeable container so as to make the gas flow including the active gas flowing in the sealed path uniform. It is what.
請求項３に記載のオゾン・プラズマ装置は、請求項１又は請求項２に記載のオゾン・プラズマ装置において、前記整流板をパンチングメタルで構成したことを特徴とするものである。 The ozone plasma apparatus according to claim 3 is the ozone plasma apparatus according to claim 1 or 2, wherein the rectifying plate is made of a punching metal .
請求項４に記載のオゾン・プラズマ装置は、請求項１〜３の何れかにに記載のオゾン・プラズマ装置において、前記処理すべき物質を含む固形物が、ダイオキシン類が含まれる液体を吸着させた固形触媒であることを特徴とするものである。 The ozone plasma apparatus according to claim 4 is the ozone plasma apparatus according to any one of claims 1 to 3, wherein the solid matter containing the substance to be treated adsorbs a liquid containing dioxins. It is characterized by being a solid catalyst .
請求項５に記載の前記処理すべき物質の酸化分解処理方法は、請求項１〜４の何れかに記載のオゾン・プラズマ装置を使用して液状の前記処理すべき物質を酸化分解処理する方法であって、液状の前記処理すべき物質、或いは前記処理すべき物質を含む液体を固形触媒に吸着させた後、前記固形触媒を前記収容部に収容することを特徴とするものである。 The method for oxidizing and decomposing the substance to be treated according to claim 5 is a method for oxidizing and decomposing the substance to be treated in a liquid state using the ozone plasma apparatus according to any one of claims 1 to 4. Then, after the liquid substance to be treated or the liquid containing the substance to be treated is adsorbed on the solid catalyst, the solid catalyst is accommodated in the accommodating portion .
本発明に基づくオゾン・プラズマ装置は、放電によりオゾン及び窒素ラジカルなどの活性種を含む活性ガスを発生させる放電部と、処理すべき物質を含む固形物を収容する通気性を有する収容部と、前記放電部から放電された活性ガスが、前記収容部を通過して循環する密閉経路を形成する循環ダクトと、を備え前記密閉経路内で活性ガス及び該活性ガスを含む気体を循環させることにより、前記収容部に収容された固形物に含まれる処理すべき物質、即ち焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質を酸化分解処理することができる。 An ozone plasma apparatus according to the present invention includes a discharge unit that generates an active gas containing active species such as ozone and nitrogen radicals by discharge, a gas-permeable storage unit that stores a solid material containing a substance to be processed, and A circulation duct that forms a sealed path through which the active gas discharged from the discharge section passes and circulates through the housing section, and circulates the active gas and a gas containing the active gas in the sealed path The substance to be treated contained in the solid matter accommodated in the accommodating part, that is, the substance to be treated such as dioxins in the incinerated ash, the odor component of the dried sludge can be subjected to the oxidative decomposition treatment.
これにより、基準値以上のダイオキシン類を含有する焼却灰のダイオキシン類の含有量を基準値以下にすることができる。また、乾燥汚泥の臭気を軽減し、これを固形燃料として容易に保管使用することができる。 Thereby, content of the dioxins of the incinerated ash containing dioxins more than a reference value can be made below a reference value. Moreover, the odor of dry sludge can be reduced and this can be easily stored and used as a solid fuel.
さらに、密閉系において、系内に電気エネルギーを注入するのみで前記処理すべき物質を酸化分解処理することができるため、これらの処理すべき物質の系外への漏出はなく、ダイオキシンのような毒性物質も安全に処理することができる。 Furthermore, in a closed system, since the substance to be treated can be oxidatively decomposed by simply injecting electric energy into the system, there is no leakage of these substances to be treated out of the system, such as dioxin. Toxic substances can also be handled safely.
また、前記処理すべき物質を含む固形物が収容された収容部を前記密閉経路内に配置し、この密閉経路内で活性ガス及び該活性ガスを含む気体を循環させているため、酸化分解処理に使用されていない未反応の活性ガスは、次回循環の際に使用できるため、効率よく酸化分解処理を行うことができる。さらに、活性ガス及び該活性ガスを含む気体の循環処理時間を調整すれば、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質の濃度、臭気成分の量の多少にかかわらず酸化分解処理を行うことができる。 In addition, since an accommodating portion in which a solid substance containing the substance to be treated is accommodated is disposed in the sealed path, and an active gas and a gas containing the active gas are circulated in the sealed path, an oxidative decomposition treatment is performed. Since the unreacted active gas that is not used in the process can be used in the next circulation, the oxidative decomposition treatment can be performed efficiently. Furthermore, if the circulation time of the active gas and the gas containing the active gas is adjusted, the concentration of substances to be treated such as dioxins in the incineration ash and the odor components of the dried sludge, regardless of the amount of odor components Oxidative decomposition treatment can be performed.
また、前記処理すべき物質を含む固形物が、ダイオキシン類を含有する液体を吸着させた固形触媒である場合にも、上述と同様に、処理すべき物質を含む固形物を収容する通気性を有する収容部に収容して、液状のダイオキシン類を酸化分解処理することができるため、分析試験により発生するダイオキシン類分析廃液にような液状の場合であっても、系外への漏出はなく、安全に処理することができる。 In addition, when the solid matter containing the substance to be treated is a solid catalyst adsorbing a liquid containing dioxins, the air permeability for accommodating the solid matter containing the substance to be treated is the same as described above. Since the liquid dioxins can be oxidatively decomposed by being housed in the containing portion, there is no leakage to the outside of the system even in the case of liquids such as dioxin analysis waste liquid generated by analytical tests, It can be processed safely.
そして、前記循環ダクトに開口部が形成され、前記収容部は、前記開口部を密閉可能な蓋体と、前記開口部から出し入れ可能な通気性容器とを備えている。すなわち、前記収容部を通過して循環する密閉経路を形成する循環ダクトに形成された開口部と密閉可能な蓋体を開口部から外して、開口部から前記通気性容器を出し入れすると共に、蓋体を取り付けた状態では密閉状態を保持することができる。したがって、蓋体を着脱することにより、酸化分解処理が終了した固形物と未処理の固形物とを容易に交換することができ、密閉系は保持できる。 An opening is formed in the circulation duct, and the housing includes a lid that can seal the opening and a breathable container that can be taken in and out of the opening. That is, the opening formed in the circulation duct that forms a sealed path that circulates through the housing portion and the lid that can be sealed are removed from the opening, the breathable container is taken in and out of the opening, and the lid When the body is attached, the sealed state can be maintained. Therefore, by attaching and detaching the lid, the solid matter after the oxidative decomposition treatment can be easily exchanged with the untreated solid matter, and the sealed system can be maintained.
また、前記密閉経路内を流れる活性ガスを含む気体の酸化分解処理を促進するための触媒部をさらに備えることにより、前記収容部から飛散又は揮散する前記処理すべき物質を酸化分解処理することができる。 Further, by further comprising a catalyst part for promoting the oxidative decomposition process of the gas containing the active gas flowing in the sealed path, the substance to be processed that scatters or volatilizes from the accommodating part may be subjected to the oxidative decomposition process. it can.
さらに、前記密閉経路内を流れる活性ガスを含む気体の温度を低下させるための冷却機構をさらに備えることにより、前記経路内を循環する活性ガス及び該活性ガスを含む気体の膨張に伴う経路内圧力の上昇を防止することができる。これにより、前記密閉経路内から系外へ気体が漏れることを防止することができる。 Furthermore, by further providing a cooling mechanism for reducing the temperature of the gas containing the active gas flowing in the sealed path, the pressure in the path accompanying the expansion of the active gas circulating in the path and the gas containing the active gas Can be prevented from rising. Thereby, it is possible to prevent gas from leaking from the inside of the sealed path to the outside of the system.
また、前記密閉経路内における前記通気性容器の直近下流側に整流板を配置することにより前記収容部での活性ガスを含む気体の流れが均一になり、処理すべき物質の酸化分解処理を効率よく行うことができる。また、前記触媒部においても活性ガスを含む気体の流れが均一になり、前記収容部から飛散又は揮散する前記処理すべき物質の酸化分解処理を前記触媒部において効率よく行うことができる。 Further, by arranging a rectifying plate immediately downstream of the air permeable container in the sealed path, the flow of the gas containing the active gas in the accommodating portion becomes uniform, and the oxidative decomposition treatment of the substance to be processed is efficient. Can be done well. Moreover, the flow of the gas containing the active gas becomes uniform also in the catalyst part, and the oxidative decomposition treatment of the substance to be processed that is scattered or volatilized from the accommodating part can be efficiently performed in the catalyst part.
さらに、液状の前記処理すべき物質、或いは前記処理すべき物質を含む液体を固形触媒に吸着させた後、前記固形触媒を前記収容部に収容することができる。この場合、液状のダイオキシン類などの処理すべき物質を前記固形触媒に吸着させた状態で前記活性ガスにより酸化分解処理するため、酸化分解処理が促進され、より効率的に酸化分解処理することができる。 Furthermore, after the liquid substance to be treated or the liquid containing the substance to be treated is adsorbed on the solid catalyst, the solid catalyst can be accommodated in the accommodating portion. In this case, since the substance to be treated such as liquid dioxins is oxidatively decomposed with the active gas in a state where the substance is adsorbed to the solid catalyst, the oxidative decomposition process is promoted and the oxidative decomposition process can be performed more efficiently. it can.
以下、図面に基づいて本発明の実施形態を説明する。
図１は、本発明に係るオゾン・プラズマ装置の実施形態を説明する模式図である。
本実施形態は、液状のダイオキシン類などの処理すべき物質、或いは前記処理すべき物質を含む液体を固形物、この実施形態では、多数の粒状の固形触媒（図示せず）に吸着させた後、該固形触媒を図１に示されるオゾン・プラズマ装置１の密閉経路における収容部６に収容して、放電により発生するオゾン及び窒素ラジカルなどの活性種を含む活性ガスにより、酸化分解処理するものであるが、ダイオキシン類を含む焼却灰、臭気成分を含む乾燥汚泥等の固形物を収容部６に収容して酸化分解処理することもできる。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram illustrating an embodiment of an ozone plasma apparatus according to the present invention.
In this embodiment, a substance to be treated such as liquid dioxins or a liquid containing the substance to be treated is adsorbed to a solid substance, in this embodiment, a large number of granular solid catalysts (not shown). The solid catalyst is accommodated in the accommodating portion 6 in the sealed path of the ozone plasma apparatus 1 shown in FIG. 1, and is subjected to oxidative decomposition treatment with an active gas containing active species such as ozone and nitrogen radicals generated by discharge. However, solid substances such as incinerated ash containing dioxins and dried sludge containing odorous components can be accommodated in the accommodating portion 6 and subjected to oxidative decomposition treatment.
オゾン・プラズマ装置１は、放電によりオゾン及び窒素ラジカルなどの活性種を含む活性ガスを発生させる放電極４を備えた放電部５と、処理すべき物質を含む固形触媒を収容する通気性を有する収容部６と、放電部５から放電された活性ガスが、収容部６を通過して循環する密閉経路を形成する循環ダクト２と、循環ダクト２内で気体を循環させるファン３とを備えている。また、前記活性ガスを含む気体が収容部６で均一に流れるようにさせるための整流板７を収容部６の下流側に配置し、さらにその下流側に触媒部１１を配置し、さらにその下流側に冷却機構１２を配置している。 The ozone plasma apparatus 1 has a breathability for accommodating a discharge part 5 having a discharge electrode 4 for generating an active gas containing active species such as ozone and nitrogen radicals by discharge, and a solid catalyst containing a substance to be treated. A housing part 6, a circulation duct 2 that forms a sealed path through which the active gas discharged from the discharge part 5 circulates through the housing part 6, and a fan 3 that circulates gas in the circulation duct 2 are provided. Yes. Further, a rectifying plate 7 for allowing the gas containing the active gas to flow uniformly in the accommodating portion 6 is disposed on the downstream side of the accommodating portion 6, the catalyst portion 11 is further disposed on the downstream side thereof, and further downstream thereof The cooling mechanism 12 is arranged on the side.
ここで、処理すべき物質とは、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分の他、土壌中の第一種特定有害物質（有機物）、細菌など酸化分解により処理できる微小成分、有機溶剤や合成樹脂の原料として使用されているスチレン、トルエンやキシレン等の芳香族炭化水素等があるが、これに限定されるものではない。 Here, substances to be treated include dioxins in incinerated ash, odor components of dry sludge, first-class specific harmful substances (organic substances) in soil, micro-components that can be treated by oxidative decomposition such as bacteria, organic solvents And aromatic hydrocarbons such as styrene, toluene and xylene used as raw materials for synthetic resins, but are not limited thereto.
また、これらは、固体に限られず液体であってもよく、分析試験により発生するダイオキシン類分析廃液のような液状の場合であっても、これを固形触媒に吸着させた状態で、収容部６に収容することもできる。固形触媒は、この実施形態では、主としてシリカ、活性炭（カーボン）で構成されるが、これに限定されるものではなくマンガンを含有させたものでもよいし、マンガン化合物、あるいはマンガンなどの金属であってもよい。また、固形触媒は、この実施形態では、多数の粒状から構成されるものであるが、これに限定されるものではなく、単一の固形物であってもよい。 Further, these are not limited to solids but may be liquids, and even in the case of liquids such as dioxin analysis waste liquids generated by analytical tests, the container 6 Can also be accommodated. In this embodiment, the solid catalyst is mainly composed of silica and activated carbon (carbon). However, the solid catalyst is not limited to this and may contain manganese, or may be a manganese compound or a metal such as manganese. May be. In this embodiment, the solid catalyst is composed of a large number of particles, but is not limited to this, and may be a single solid.
さらに、循環ダクト２に開口部８が設けられ、収容部６は、開口部８を密閉可能な蓋体９と開口部８から出し入れ可能な通気性容器１０とを備えることができ、開口部８を通じて通気性容器１０を出し入れすることができる構造になっている。また、通気性容器１０は流入してくる活性ガス及び該活性ガスを含む気体に抵抗を与えることなくスムーズに流れるよう網かごを使用することができ、不織布、ウールマット等の通気性のシートを介してその中に粒状の多数の固形触媒、又は乾燥汚泥等の固形物等を収容することができる。 Furthermore, an opening 8 is provided in the circulation duct 2, and the housing 6 can include a lid 9 that can seal the opening 8 and a breathable container 10 that can be taken in and out of the opening 8. It has a structure in which the breathable container 10 can be taken in and out. Further, the breathable container 10 can use a mesh basket so as to flow smoothly without giving resistance to the inflowing active gas and the gas containing the active gas, and a breathable sheet such as a nonwoven fabric or a wool mat can be used. It is possible to accommodate a large number of granular solid catalysts or solid matters such as dried sludge.
整流板７は例えばパンチングメタルを使用することができる。これにより、収容部６内における活性ガスの流れが均一になり、未処理の前記焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質の酸化分解処理を効率よく行うことができる。 For example, a punching metal can be used for the current plate 7. Thereby, the flow of the active gas in the accommodating part 6 becomes uniform, and the oxidative decomposition treatment of the substances to be treated such as dioxins in the untreated incineration ash and the odor component of the dried sludge can be efficiently performed. .
触媒部１１には、前記固形触媒と同一材質の触媒が配置されているがこれに限られるものではない。そして、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質の中で、収容部６から飛散又は揮散する前記処理すべき物質を酸化分解処理することとしている。 A catalyst of the same material as the solid catalyst is disposed in the catalyst unit 11, but the present invention is not limited to this. Then, among the substances to be processed such as dioxins in the incinerated ash and the odor component of the dried sludge, the substances to be processed that are scattered or volatilized from the storage unit 6 are subjected to oxidative decomposition treatment.
冷却機構１２は、前記密閉経路内を流れる活性ガスを含む気体の温度を低下させ、前記経路内を循環する活性ガス及び該活性ガスを含む気体の膨張に伴う経路内圧力の上昇を防止し、前記密閉経路内から系外へ気体が漏れることを防止するものである。 The cooling mechanism 12 reduces the temperature of the gas containing the active gas flowing in the sealed path, prevents an increase in the pressure in the path due to the expansion of the active gas circulating in the path and the gas containing the active gas, This prevents gas from leaking from the inside of the sealed path to the outside of the system.
オゾン・プラズマ装置１を使用する場合、まず、ダイオキシン類を含む焼却灰、ダイオキシン類などを含む液状の処理すべき物質を吸着させた多数の粒状の固形触媒からなる固形物、又は、臭気成分を含む乾燥汚泥等の固形物を通気性容器１０に収容する。次に、蓋体９を開口部８から外して、未処理の固形物が収容された通気性容器１０を循環ダクト２内の収容部６に収容する。次に、開口部８に蓋体９を取り付けて密閉系を保持する。 When the ozone / plasma apparatus 1 is used, first, incinerated ash containing dioxins, solid matter composed of a large number of granular solid catalysts adsorbing liquid substances to be treated containing dioxins, etc., or odor components A solid material such as dried sludge is contained in the breathable container 10. Next, the lid body 9 is removed from the opening 8, and the breathable container 10 in which the untreated solid matter is accommodated is accommodated in the accommodating portion 6 in the circulation duct 2. Next, the lid body 9 is attached to the opening 8 to hold the sealed system.
次に、放電部５に備えられた放電極４の放電により、オゾン及び窒素ラジカルなどの活性種を含む活性ガスが発生する。該活性ガスが通気性を有する収容部６を通過する際に、そこに収容された粒状の固形触媒からなる固形物、ダイオキシン類を含む焼却灰、又は、臭気成分を含む乾燥汚泥等の固形物と接触し、その後整流板７を通過する。その後、前記活性ガス及び該活性ガスを含む気体は、前記密閉経路を形成する循環ダクト２に沿って、触媒部１１を通過し、冷却機構１２を通過し、放電部５に到達し、これを繰り返す。 Next, an active gas containing active species such as ozone and nitrogen radicals is generated by the discharge of the discharge electrode 4 provided in the discharge unit 5. When the active gas passes through the gas-containing container 6, the solid substance made of a granular solid catalyst accommodated therein, the incinerated ash containing dioxins, or the solid substance such as dried sludge containing odor components And then passes through the current plate 7. Thereafter, the active gas and the gas containing the active gas pass through the catalyst unit 11 along the circulation duct 2 forming the sealed path, pass through the cooling mechanism 12, reach the discharge unit 5, and repeat.
このように、前記密閉経路内でオゾン及び窒素ラジカルなどの活性種を含む活性ガスを循環させることにより、活性ガスが通気性を有する収容部６に収容された粒状の固形触媒からなる固形物、ダイオキシン類を含む焼却灰、又は乾燥汚泥等の固形物を通過する際に、固形物に含まれる前記処理すべき物質が上記活性ガスにより酸化分解処理される。 In this way, by circulating an active gas containing active species such as ozone and nitrogen radicals in the sealed path, a solid material comprising a granular solid catalyst accommodated in the accommodating portion 6 in which the active gas has air permeability, When passing through solid matter such as incinerated ash containing dioxins or dried sludge, the substance to be treated contained in the solid matter is oxidatively decomposed by the active gas.
そして、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質の中で、収容部６から飛散又は揮散する前記処理すべき物質は、触媒部１１にて捕捉され最終的に酸化分解処理される。尚、触媒部１１は、活性ガス及び該活性ガスを含む気体の中に含まれる前記処理すべき物質の酸化分解処理を促進する。 Among the substances to be treated such as dioxins in the incinerated ash and odor components of the dried sludge, the substance to be treated which is scattered or volatilized from the storage unit 6 is captured by the catalyst unit 11 and finally oxidized. Decomposed. In addition, the catalyst part 11 accelerates | stimulates the oxidative decomposition process of the said substance to be processed contained in the active gas and the gas containing this active gas.
次に、前記収容部６において酸化分解処理が終了した場合には、蓋体９を開口部８から外して、通気性容器１０を取り出し、酸化分解処理が終了した固形物と未処理の固形物を交換する。次に、開口部８に蓋体９を取り付けて密閉系を保持する。 Next, when the oxidative decomposition process is completed in the storage unit 6, the lid 9 is removed from the opening 8, the air-permeable container 10 is taken out, and the solids that have been subjected to the oxidative decomposition process and unprocessed solids Replace. Next, the lid body 9 is attached to the opening 8 to hold the sealed system.
以上により、固形物に含まれる処理すべき物質、即ち、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質を上記活性ガスにより酸化分解処理することができる。これにより、基準値以上のダイオキシン類を含有する焼却灰のダイオキシン類の含有量を基準値以下にすることができる。また、乾燥汚泥の臭気を軽減するので保管が容易となり固形燃料として使用可能とすることができる。 As described above, the substance to be treated contained in the solid substance, that is, the substance to be treated such as dioxins in the incineration ash and the odor component of the dried sludge can be oxidatively decomposed with the active gas. Thereby, content of the dioxins of the incinerated ash containing dioxins more than a reference value can be made below a reference value. Moreover, since the odor of dry sludge is reduced, storage becomes easy and it can be used as a solid fuel.
さらに、密閉系において、系内に電気エネルギーを注入することにより、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質を酸化分解処理することができるため、これらの処理すべき物質の系外への漏出はなく、ダイオキシンのような毒性物質も安全に処理することができる。 Furthermore, in a closed system, by injecting electric energy into the system, dioxins in incineration ash, odorous components of dry sludge, etc. can be oxidatively decomposed, so these should be treated. There is no leakage of substances outside the system, and toxic substances such as dioxins can be safely treated.
また、前記処理すべき物質を含む固形物が収容された収容部を前記密閉経路内に配置し、この密閉経路内で活性ガス及び該活性ガスを含む気体を循環させているため、未反応の活性ガスは、次回循環の際に使用でき、さらに効率よく酸化分解処理を行うことができる。 In addition, since the container containing the solid matter containing the substance to be treated is disposed in the sealed path, and the active gas and the gas containing the active gas are circulated in the sealed path, unreacted The active gas can be used in the next circulation and can be further efficiently oxidized and decomposed.
さらに、活性ガス及び該活性ガスを含む気体の循環処理時間を調整すれば、焼却灰中のダイオキシン類、乾燥汚泥の臭気成分などの処理すべき物質の濃度、臭気成分の量の多少にかかわらず酸化分解処理を行うことができる。 Furthermore, if the circulation time of the active gas and the gas containing the active gas is adjusted, the concentration of substances to be treated such as dioxins in the incineration ash and the odor components of the dried sludge, regardless of the amount of odor components Oxidative decomposition treatment can be performed.
１ オゾン・プラズマ装置
２ 循環ダクト
３ ファン
４ 放電極
５ 放電部
６ 収容部
７ 整流板
８ 開口部
９ 蓋体
１０ 通気性容器
１１ 触媒部
１２ 冷却機構
DESCRIPTION OF SYMBOLS 1 Ozone plasma apparatus 2 Circulation duct 3 Fan 4 Discharge electrode 5 Discharge part 6 Accommodating part 7 Current plate 8 Opening part 9 Cover body 10 Breathable container 11 Catalyst part 12 Cooling mechanism
Claims (5)
放電によりオゾン及び窒素ラジカルなどの活性種を含む活性ガスを発生させる放電部と、
前記放電部の下流側に配置され、前記処理すべき物質を含む固形物を収容する通気性を有する収容部と、
前記収容部の下流側に配置され、前記収容部から揮散あるいは飛散する前記処理すべき物質を捕捉し酸化分解処理を促進するための触媒部と、
前記放電部での放電により発生した活性ガスが、前記収容部を通過して循環する密閉経路を形成する循環ダクトと、
前記密閉経路内を流れる活性ガスを含む気体の温度を低下させるための冷却機構と、
前記循環ダクト内で気体を循環させるファンと、を備え、
放電により発生した活性ガスが、前記収容部、前記触媒部、前記冷却機構、前記放電部を順に通過することにより、前記密閉経路内を繰り返し循環するような構成とされていることを特徴とするオゾン・プラズマ装置。 An ozone plasma apparatus that oxidatively decomposes a substance to be treated with an active gas containing active species such as ozone and nitrogen radicals generated by discharge,
A discharge part for generating an active gas containing active species such as ozone and nitrogen radicals by discharge;
An air receiving part that is disposed downstream of the discharge part and contains a solid material containing the substance to be treated;
A catalyst unit that is disposed on the downstream side of the housing unit, captures the substance to be treated that volatilizes or scatters from the housing unit, and promotes oxidative decomposition treatment ;
A circulation duct that forms a sealed path through which the active gas generated by the discharge in the discharge part circulates through the housing part;
A cooling mechanism for lowering the temperature of the gas containing the active gas flowing in the sealed path ;
A fan for circulating gas in the circulation duct,
The active gas generated by the discharge is configured to repeatedly circulate in the sealed path by sequentially passing through the storage unit, the catalyst unit, the cooling mechanism, and the discharge unit. Ozone plasma device.
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| JPH1015380A (en) * | 1996-07-03 | 1998-01-20 | Fuji Electric Co Ltd | Plasma type fluidized bed furnace |
| JP3395148B2 (en) * | 1998-03-31 | 2003-04-07 | 株式会社豊栄商会 | Soil production method, soil treatment device, treatment method and treatment device |
| JPH11290820A (en) * | 1998-04-15 | 1999-10-26 | Ishikawajima Harima Heavy Ind Co Ltd | Method for decomposing dioxin and its decomposition plant |
| JP3359016B2 (en) * | 2000-02-18 | 2002-12-24 | 三菱重工業株式会社 | Ash and soil detoxification method and detoxification equipment |
| JP2002153834A (en) * | 2000-11-16 | 2002-05-28 | Mitsubishi Heavy Ind Ltd | Treatment method and treatment equipment for making ash and soil pollution-free |
| US7042159B2 (en) * | 2004-02-10 | 2006-05-09 | Daikin Industries, Ltd. | Plasma reactor and purification equipment |
| JP2005055448A (en) * | 2004-10-21 | 2005-03-03 | Hitachi Ltd | Analyzer |
| JP3840579B2 (en) * | 2005-02-25 | 2006-11-01 | ダイキン工業株式会社 | Air conditioner |
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| JP2008049298A (en) * | 2006-08-25 | 2008-03-06 | Asuka Medical:Kk | Cartridge for purification of gas containing volatile organic matter and indoor type waste gas purifier, waste gas purifying system and waste gas purifying method using it |
| JP2011222404A (en) * | 2010-04-13 | 2011-11-04 | Akitoshi Okino | Plasma processing method, plasma processing apparatus and processing object processed by plasma |
| JP2012245448A (en) * | 2011-05-26 | 2012-12-13 | Masayuki Kurihara | Waste treatment apparatus and waste treatment method |
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