JP2006150242A - Air purification apparatus and air purifying method using it - Google Patents

Air purification apparatus and air purifying method using it Download PDF

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JP2006150242A
JP2006150242A JP2004345176A JP2004345176A JP2006150242A JP 2006150242 A JP2006150242 A JP 2006150242A JP 2004345176 A JP2004345176 A JP 2004345176A JP 2004345176 A JP2004345176 A JP 2004345176A JP 2006150242 A JP2006150242 A JP 2006150242A
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atmosphere
air
nitrogen dioxide
air purification
ozone
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Hiroshi Suzumura
鈴村　　洋
Michio Haneda
道夫 羽田
Toshiaki Kanazawa
敏暁 金沢
Hitoshi Fujimoto
仁志 藤元
Masaharu Kono
正治 河野
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Mitsubishi Heavy Industries Ltd
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    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air purification apparatus capable of carrying out oxidation of nitrogen monoxide and removal of suspended particles in a saved space, even in an extremely limited space, and an air purifying method using it. <P>SOLUTION: This air purification apparatus is provided with a suction fan 110 running air 1, a collection port 111, ducts 112-115, an exhaust stack 116, an electrostatic dust precipitator 120 removing suspended particle matter (SPM) from the air 1 running by the suction fan 110 or the like, and a nitrogen dioxide absorber 130 absorbing and removing NO<SB>2</SB>in the air 1 passing through the electrostatic dust precipitator 120. The electrostatic dust precipitator 120 is provided with a charging part 121 located on the upstream side of the running direction of the air 1 and formed by alternately arranging multiple discharge electrodes 121a and collection electrodes 121b, and a dust collecting part 122 located on the downstream side of the running direction of the air 1 and formed by alternately arranging multiple discharge electrodes 122a and collection electrodes 122b. The discharge electrodes 121a of the charging part 121 have protruded acute tips 121aa with given spaces. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、トンネルや交差点等に配設されて自動車からの排ガス中の窒素酸化物等により汚染された大気を浄化処理する大気浄化装置及びこれを使用する大気浄化方法に関する。   The present invention relates to an air purification apparatus that purifies the atmosphere that is disposed in a tunnel, an intersection, or the like and is contaminated with nitrogen oxides or the like in exhaust gas from an automobile, and an air purification method that uses the same.

トンネル等に配設されて自動車からの排ガス中の窒素酸化物等により汚染された大気を浄化処理する装置としては、例えば、下記特許文献１に記載されているものが知られている。この装置は、被浄化ガスに対してオゾン発生装置からオゾン（Ｏ3）を供給して一酸化窒素（ＮＯ）を二酸化窒素（ＮＯ2）に酸化し、この二酸化窒素を被浄化ガス中に当初から存在している二酸化窒素と共に二酸化窒素吸収剤で吸収除去することにより、被浄化ガス中の窒素酸化物を浄化処理するようにしている。 As an apparatus for purifying the air that is disposed in a tunnel or the like and is contaminated with nitrogen oxides in exhaust gas from an automobile, for example, a device described in Patent Document 1 is known. This device supplies ozone (O 3 ) from the ozone generator to the gas to be purified to oxidize nitric oxide (NO) to nitrogen dioxide (NO 2 ), and this nitrogen dioxide is initially contained in the gas to be purified. The nitrogen oxide in the gas to be purified is purified by absorption and removal with a nitrogen dioxide absorbent together with nitrogen dioxide present in the gas.

特開平７−０８８３２６号公報JP-A-7-088326

このような従来の窒素酸化物浄化装置において、二酸化窒素吸収剤での処理前に煤塵等の浮遊粒子状物（ＳＰＭ）を被浄化ガス中から除去するように電気集塵器（ＥＰ）等を設ける場合、大掛かりなオゾン発生装置と電気集塵器との両者をトンネル内や交差点等の非常に限定された空間内に配設しなければならず、実用化が非常に困難となっていた。   In such a conventional nitrogen oxide purification device, an electric dust collector (EP) or the like is installed so as to remove suspended particulate matter (SPM) such as soot from the gas to be purified before treatment with the nitrogen dioxide absorbent. When it is provided, both the large-scale ozone generator and the electrostatic precipitator must be disposed in a very limited space such as a tunnel or an intersection, which makes it very difficult to put into practical use.

このようなことから、本発明は、非常に限定された空間内であっても、一酸化窒素の酸化と浮遊粒状物の除去とを省スペースで実施することができる大気浄化装置及びこれを使用する大気浄化方法を提供することを目的とする。   For this reason, the present invention provides an air purification device capable of performing nitric oxide oxidation and removal of suspended particulate matter in a space-saving manner even in a very limited space, and the use thereof An object of the present invention is to provide an air purification method.

前述した課題を解決するための、本発明に係る大気浄化装置は、大気を流通させる大気流通手段と、前記大気流通手段により流通する前記大気から浮遊粒子状物を除去する電気集塵器と、前記電気集塵器内を流通した前記大気中の二酸化窒素を吸収除去する二酸化窒素吸収器とを備え、前記電気集塵器が、前記大気の流通方向上流側に位置して放電極と集電極とを交互に複数配列した荷電部と、前記大気の流通方向下流側に位置して放電極と集塵極とを交互に複数配列した集塵部とを備えると共に、前記荷電部の前記放電極が、鋭角な先端を有する突起を所定の間隔で複数有していることを特徴とする。   An air purification apparatus according to the present invention for solving the above-mentioned problems is an air circulation means for circulating the atmosphere, an electric dust collector for removing suspended particulate matter from the atmosphere flowing by the atmosphere circulation means, A nitrogen dioxide absorber that absorbs and removes nitrogen dioxide in the atmosphere that has circulated through the electric dust collector, and the electric dust collector is located upstream in the circulation direction of the atmosphere, and a discharge electrode and a collector electrode A plurality of charged portions alternately arranged, and a dust collecting portion alternately arranged with a plurality of discharge electrodes and dust collection electrodes located on the downstream side in the circulation direction of the atmosphere, and the discharge electrode of the charge portion Has a plurality of protrusions having sharp tips at a predetermined interval.

また、本発明に係る大気浄化装置は、上述した大気浄化装置において、前記電気集塵器の前記荷電部の前記放電極が、前記突起を周縁端に沿って所定の間隔で複数有する平板状をなすものであることを特徴とする。   Moreover, the air purification apparatus according to the present invention is the air purification apparatus described above, wherein the discharge electrode of the charging unit of the electrostatic precipitator has a flat plate shape having a plurality of protrusions at predetermined intervals along a peripheral edge. It is an eggplant.

また、本発明に係る大気浄化装置は、上述した大気浄化装置において、前記二酸化窒素吸収器内を流通した前記大気中のオゾン濃度を計測するオゾン計測手段と、前記二酸化窒素吸収器内を流通した前記大気中のオゾン濃度が検出下限界以下となるように、前記オゾン計測手段からの信号に基づいて、前記電気集塵器の作動能力を制御する制御手段とを備えていることを特徴とする。   Further, the air purification apparatus according to the present invention is the above-described air purification apparatus, wherein ozone measuring means for measuring the ozone concentration in the atmosphere that circulates in the nitrogen dioxide absorber and the inside of the nitrogen dioxide absorber are circulated. Control means for controlling the operation capability of the electrostatic precipitator on the basis of a signal from the ozone measuring means so that the ozone concentration in the atmosphere is below a detection lower limit. .

他方、前述した課題を解決するための、本発明に係る大気浄化方法は、上述した大気浄化装置を使用する大気浄化方法であって、前記大気流通手段により前記大気を流通させ、前記電気集塵器により前記大気中の前記浮遊粒子状物を捕集除去すると同時に、当該大気中の酸素をオゾンに転化させて、当該オゾンにより当該大気中の一酸化窒素を二酸化窒素に転化させた後、前記二酸化窒素吸収器により前記大気中の二酸化窒素を吸収除去することを特徴とする。   On the other hand, an air purification method according to the present invention for solving the above-described problem is an air purification method using the air purification device described above, wherein the air is circulated by the air circulation means, and the electric dust collection is performed. At the same time as collecting and removing the suspended particulate matter in the atmosphere by a vessel, the oxygen in the atmosphere is converted to ozone, the nitrogen monoxide in the atmosphere is converted to nitrogen dioxide by the ozone, The nitrogen dioxide in the atmosphere is absorbed and removed by a nitrogen dioxide absorber.

本発明に係る大気浄化装置及びこれを使用する大気浄化方法によれば、トンネル内や交差点等の非常に限定された空間内であっても、一酸化窒素の酸化と浮遊粒状物の除去とを省スペースで実施することができる。   According to the air purification apparatus and the air purification method using the same according to the present invention, oxidation of nitric oxide and removal of suspended particulate matter are performed even in a very limited space such as in a tunnel or an intersection. It can be implemented in a space-saving manner.

本発明に係る大気浄化装置及びこれを使用する大気浄化方法の実施形態を図１〜３に基づいて説明する。図１は、大気浄化装置の概略構成図、図２は、図１の電気集塵器の要部の概略構成図、図３は、図２の電気集塵器の作用説明図である。   Embodiments of an air purification apparatus and an air purification method using the same according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of the air purification device, FIG. 2 is a schematic configuration diagram of a main part of the electrostatic precipitator of FIG. 1, and FIG. 3 is an operation explanatory diagram of the electrostatic precipitator of FIG.

図１に示すように、一酸化窒素（ＮＯ）や二酸化窒素（ＮＯ2）等の窒素酸化物や煤塵等の浮遊粒子状物（ＳＰＭ）で汚染された空気１を捕集する捕集口１１１は、ダクト１１２を介して電気集塵器１２０の受入口に連絡している。 As shown in FIG. 1, a collection port 111 that collects air 1 contaminated with nitrogen oxides such as nitrogen monoxide (NO) and nitrogen dioxide (NO 2 ) and suspended particulate matter (SPM) such as dust. Communicates with the receiving port of the electrostatic precipitator 120 via the duct 112.

この電気集塵器１２０は、図２に示すように、大気１の流通方向上流側に位置して平板状の放電極１２１ａと平板状の集電極１２１ｂとを大気１の流通方向と交差する方向にわたって交互に複数配列した荷電部１２１と、大気１の流通方向下流側に位置して平板状の放電極１２２ａと平板状の集塵極１２２ｂとを大気１の流通方向と交差する方向にわたって交互に複数配列した集塵部１２２とを備え、荷電部１２１の放電極１２１ａ及び集塵部１２２の放電極１２２ａが高圧直流電源１２３の負極に接続され、荷電部１２１の集電極１２１ｂ及び集塵部１２２の集塵極１２２ｂが高圧直流電源１２３の正極に接続されたものである。   As shown in FIG. 2, the electrostatic precipitator 120 is located upstream in the flow direction of the atmosphere 1 and crosses the flat discharge electrode 121 a and the flat collector electrode 121 b with the flow direction of the atmosphere 1. A plurality of charged portions 121 alternately arranged over the air flow direction of the atmosphere 1 and a flat discharge electrode 122a and a flat plate-shaped dust collecting electrode 122b alternately in a direction intersecting the flow direction of the air 1 The discharge electrode 121a of the charging unit 121 and the discharge electrode 122a of the dust collection unit 122 are connected to the negative electrode of the high-voltage DC power source 123, and the collection electrode 121b and the dust collection unit 122 of the charging unit 121 are provided. The dust collecting electrode 122 b is connected to the positive electrode of the high-voltage DC power supply 123.

そして、上記電気集塵器１２０は、荷電部１２１の放電極１２１ａが、鋭角な先端を有する突起１２１ａａを周縁端に沿って所定の間隔で複数有している。   In the electrostatic precipitator 120, the discharge electrode 121a of the charging unit 121 has a plurality of protrusions 121aa having an acute tip at predetermined intervals along the peripheral edge.

図１に示すように、上記電気集塵器１２０の送出口は、二酸化窒素（ＮＯ2）を吸収する二酸化窒素吸収剤を内装した二酸化窒素吸収器１３０の受入口にダクト１１３を介して連絡している。二酸化窒素吸収器１３０の送出口は、ダクト１１４を介して吸引ファン１１０の受入口に連絡している。吸引ファン１１０の送出口は、ダクト１１５を介して排気塔１１６に連絡している。 As shown in FIG. 1, the outlet of the electrostatic precipitator 120 communicates with the inlet of a nitrogen dioxide absorber 130 containing a nitrogen dioxide absorbent that absorbs nitrogen dioxide (NO 2 ) through a duct 113. ing. The outlet of the nitrogen dioxide absorber 130 communicates with the inlet of the suction fan 110 via the duct 114. The outlet of the suction fan 110 communicates with the exhaust tower 116 via a duct 115.

図１に示すように、前記二酸化窒素吸収器１３０の送出口と吸引ファン１１０の受入口との間のダクト１１４には、オゾン（Ｏ3）濃度を計測するオゾン計測手段であるオゾンセンサ１４１が配備されている。このオゾンセンサ１４１は、制御手段である制御装置１４０の入力部に電気的に接続されている。制御装置１４０の出力部は、前記電気集塵器１２０に電気的に接続されており、当該制御装置１４０は、上記オゾンセンサ１４１からの信号に基づいて、上記電気集塵器１２０の作動能力を制御することができるようになっている（詳細は後述する）。 As shown in FIG. 1, an ozone sensor 141 that is an ozone measuring unit that measures ozone (O 3 ) concentration is provided in a duct 114 between the outlet of the nitrogen dioxide absorber 130 and the inlet of the suction fan 110. Has been deployed. The ozone sensor 141 is electrically connected to an input unit of a control device 140 that is a control unit. The output unit of the control device 140 is electrically connected to the electrostatic precipitator 120, and the control device 140 determines the operation capability of the electrostatic precipitator 120 based on the signal from the ozone sensor 141. It can be controlled (details will be described later).

なお、本実施形態では、吸引ファン１１０、捕集口１１１、ダクト１１２〜１１５、排気塔１１６等により大気流通手段を構成している。   In the present embodiment, the air circulation means is constituted by the suction fan 110, the collection port 111, the ducts 112 to 115, the exhaust tower 116, and the like.

次に、このような大気浄化装置１００を使用する大気浄化方法を説明する。   Next, an air purification method using such an air purification device 100 will be described.

前記吸引ファン１１０を作動すると、前記捕集口１１１から大気１が吸引され、前記電気集塵器１２０内に送給される。前記制御装置１４０は、電気集塵器１２０の高圧直流電源１２３を作動させて、荷電部１２１の放電極１２１ａと集電極１２１ｂとの間及び集塵部１２２の放電極１２２ａと集塵極１２２ｂとの間に高圧直流電圧を印加する。   When the suction fan 110 is operated, the atmosphere 1 is sucked from the collection port 111 and is fed into the electric dust collector 120. The control device 140 operates the high-voltage DC power source 123 of the electrostatic precipitator 120, and between the discharge electrode 121a and the collection electrode 121b of the charging unit 121 and between the discharge electrode 122a and the collection electrode 122b of the dust collection unit 122. A high-voltage DC voltage is applied during

上記電気集塵器１２０は、図３に示すように、荷電部１２１の放電極１２１ａと集電極１２１ｂとの間でコロナ放電を生じ、大気１のガスの分子をイオン化させ、自由電子を含むマイナスイオンＩが放電極１２１ａから集電極１２１ｂに向かって流れて当該電極１２１ａ，１２１ｂ間にマイナスイオンＩのカーテンＣが形成される。このように生じたカーテンＣ（電界）に対してＳＰＭが通過すると、ＳＰＭは、マイナスイオンＩとの衝突等により荷電される。荷電されたＳＰＭは、荷電部１２１から集塵部１２２に流れ、クーロン力により集塵極１２２ｂに捕集されることにより、大気１中から除去される。   As shown in FIG. 3, the electrostatic precipitator 120 generates a corona discharge between the discharge electrode 121a and the collector electrode 121b of the charging unit 121, ionizes gas molecules in the atmosphere 1, and includes a negative electron. The ions I flow from the discharge electrode 121a toward the collecting electrode 121b, and a curtain C of negative ions I is formed between the electrodes 121a and 121b. When the SPM passes through the curtain C (electric field) generated in this way, the SPM is charged by collision with the negative ions I or the like. The charged SPM flows from the charging part 121 to the dust collecting part 122 and is collected from the atmosphere 1 by being collected by the dust collecting electrode 122b by Coulomb force.

ここで、上記電気集塵器１２０は、荷電部１２１の放電極１２１ａが所定の間隔で前記突起１２１ａａを複数有していることから、上記コロナ放電が当該突起１２１ａａを起点にして所定の間隔で一様に広範囲にわたって生じるようになるので、大気１中のＳＰＭを効率よく荷電できるのはもちろんのこと、大気１中の酸素（Ｏ2）からオゾン（Ｏ3）が効率よく生成するようになる。 Here, in the electrostatic precipitator 120, since the discharge electrode 121a of the charging unit 121 has a plurality of the protrusions 121aa at a predetermined interval, the corona discharge starts at the protrusion 121aa at a predetermined interval. Since it occurs uniformly over a wide range, ozone (O 3 ) can be efficiently generated from oxygen (O 2 ) in the atmosphere 1 as well as the SPM in the atmosphere 1 can be efficiently charged. .

具体的には、上記電気集塵器１２０は、例えば、荷電部の放電極に線状のワイヤを用いた汎用的な電気集塵器と比較した場合、図４に示すように、同じ消費電力量であっても、大気中からオゾンを非常に多く発生させることが可能なのである。   Specifically, the electric dust collector 120 has the same power consumption as shown in FIG. 4 when compared with, for example, a general-purpose electric dust collector using a linear wire for the discharge electrode of the charging unit. Even if it is a quantity, it is possible to generate a very large amount of ozone from the atmosphere.

つまり、前記大気１は、電気集塵器１２０内に送給されることにより、ＳＰＭが除去されるだけでなく、酸素の一部が酸化されてオゾンに転じ、当該オゾンの発生量に応じて、下記の式（１）に示すように、一酸化窒素（ＮＯ）が酸化されて二酸化窒素（ＮＯ2）に転じるようになるのである。 That is, when the atmosphere 1 is fed into the electrostatic precipitator 120, not only the SPM is removed, but also a part of oxygen is oxidized and turned into ozone, and according to the amount of generated ozone. As shown in the following formula (1), nitric oxide (NO) is oxidized and turned into nitrogen dioxide (NO 2 ).

ＮＯ＋Ｏ3→ＮＯ2＋Ｏ2 （１） NO + O 3 → NO 2 + O 2 (1)

続いて、電位集塵器１２０内を流通した大気１は、図１に示すように、ダクト１１３を介して二酸化窒素吸収器１３０に送給されて二酸化窒素が吸収除去された後、ダクト１１４、吸引ファン１１０、ダクト１１５を介して排気塔１１６から外部に排出される。   Subsequently, as shown in FIG. 1, the atmosphere 1 circulated in the potential dust collector 120 is sent to the nitrogen dioxide absorber 130 through the duct 113 and the nitrogen dioxide is absorbed and removed, and then the duct 114, The air is exhausted from the exhaust tower 116 through the suction fan 110 and the duct 115.

このとき、制御装置１４０は、前記オゾンセンサ１４１からの信号に基づいて、二酸化窒素吸収器１３０内を流通した大気１中のオゾン濃度を計測し、排気塔１１６から排出する大気１中のオゾン濃度が検出下限界以下となることを満足させ、捕集口１１１から捕集した大気１中の一酸化窒素の二酸化窒素への転化に必要十分な量のオゾンを発生させるように前記電気集塵器１２０の作動能力を制御する。   At this time, the control device 140 measures the ozone concentration in the atmosphere 1 flowing through the nitrogen dioxide absorber 130 based on the signal from the ozone sensor 141, and the ozone concentration in the atmosphere 1 discharged from the exhaust tower 116. The electrostatic precipitator so as to generate a sufficient amount of ozone necessary to convert nitrogen monoxide in the atmosphere 1 collected from the collection port 111 into nitrogen dioxide. Control 120 operating capabilities.

つまり、本実施形態は、上述した電気集塵器１２０により、大気１中のＳＰＭを除去すると同時に、大気１中の一酸化窒素の二酸化窒素への転化に必要十分な量のオゾンも発生させるようにしたのである。   That is, in the present embodiment, the above-described electrostatic precipitator 120 removes SPM in the atmosphere 1 and at the same time, generates a sufficient amount of ozone necessary for conversion of nitrogen monoxide in the atmosphere 1 to nitrogen dioxide. It was.

このため、本実施形態では、オゾン発生装置を用いなくても大気１中の一酸化窒素をオゾンの発生量に応じて二酸化窒素に転化することが容易にできる。   For this reason, in this embodiment, it is possible to easily convert nitrogen monoxide in the atmosphere 1 into nitrogen dioxide in accordance with the amount of ozone generated without using an ozone generator.

したがって、本実施形態によれば、トンネル内や交差点等の非常に限定された空間内であっても、一酸化窒素の酸化とＳＰＭの除去とを省スペースで実施することができる。   Therefore, according to the present embodiment, even in a very limited space such as a tunnel or an intersection, the oxidation of nitric oxide and the removal of SPM can be performed in a space-saving manner.

本発明に係る窒素酸化物浄化装置及びこれを使用する大気浄化方法は、トンネル内や交差点等の非常に限定された空間内であっても、一酸化窒素の酸化と浮遊粒状物の除去とを省スペースで実施することができるので、産業上、極めて有益に利用することができる。   The nitrogen oxide purification apparatus and the air purification method using the same according to the present invention perform oxidation of nitric oxide and removal of suspended particulate matter even in a very limited space such as in a tunnel or an intersection. Since it can be carried out in a space-saving manner, it can be used extremely beneficially industrially.

本発明に係る大気浄化装置の実施形態の概略構成図である。It is a schematic block diagram of embodiment of the air purification apparatus which concerns on this invention. 図１の電気集塵器の要部の概略構成図である。It is a schematic block diagram of the principal part of the electrostatic precipitator of FIG. 図２の電気集塵器の作用説明図である。It is operation | movement explanatory drawing of the electrostatic precipitator of FIG. 図１の電気集塵器によるオゾン発生能力を表すグラフである。It is a graph showing the ozone generation capability by the electric dust collector of FIG.

符号の説明Explanation of symbols

１ 大気
１００ 大気浄化装置
１１０ 吸引ファン
１１１ 捕集口
１１２〜１１５ ダクト
１１６ 排気塔
１２０ 電気集塵器
１２１ 荷電部
１２１ａ 放電極
１２１ａａ 突起
１２１ｂ 集電極
１２２ 集塵部
１２２ａ 放電極
１２２ｂ 集塵極
１２３ 高圧直流電源
１３０ 二酸化窒素吸収器
１４０ 制御装置
１４１ オゾンセンサ DESCRIPTION OF SYMBOLS 1 Air | atmosphere 100 Air purification apparatus 110 Suction fan 111 Collection port 112-115 Duct 116 Exhaust tower 120 Electric dust collector 121 Charging part 121a Discharge electrode 121aa Protrusion 121b Collection electrode 122 Dust collection part 122a Discharge electrode 122b Dust collection electrode 123 High voltage direct current Power supply 130 Nitrogen dioxide absorber 140 Control device 141 Ozone sensor

Claims (4)

大気を流通させる大気流通手段と、
前記大気流通手段により流通する前記大気から浮遊粒子状物を除去する電気集塵器と、
前記電気集塵器内を流通した前記大気中の二酸化窒素を吸収除去する二酸化窒素吸収器と
を備え、
前記電気集塵器が、
前記大気の流通方向上流側に位置して放電極と集電極とを交互に複数配列した荷電部と、
前記大気の流通方向下流側に位置して放電極と集塵極とを交互に複数配列した集塵部と
を備えると共に、
前記荷電部の前記放電極が、鋭角な先端を有する突起を所定の間隔で複数有している
ことを特徴とする大気浄化装置。 Air circulation means for circulating the atmosphere;
An electrostatic precipitator that removes suspended particulate matter from the atmosphere circulated by the atmosphere circulation means;
A nitrogen dioxide absorber that absorbs and removes nitrogen dioxide in the atmosphere that has circulated through the electric dust collector, and
The electrostatic precipitator is
A charged portion in which a plurality of discharge electrodes and collector electrodes are alternately arranged on the upstream side in the circulation direction of the atmosphere;
A dust collecting portion that is disposed downstream of the atmospheric flow direction and in which a plurality of discharge electrodes and dust collecting electrodes are alternately arranged;
The air purification apparatus, wherein the discharge electrode of the charging unit has a plurality of protrusions having sharp tips at a predetermined interval. 請求項１において、
前記電気集塵器の前記荷電部の前記放電極が、前記突起を周縁端に沿って所定の間隔で複数有する平板状をなすものである
ことを特徴とする大気浄化装置。 In claim 1,
The air purification apparatus, wherein the discharge electrode of the charging unit of the electrostatic precipitator has a flat plate shape having a plurality of protrusions at a predetermined interval along a peripheral edge. 請求項１又は請求項２において、
前記二酸化窒素吸収器内を流通した前記大気中のオゾン濃度を計測するオゾン計測手段と、
前記二酸化窒素吸収器内を流通した前記大気中のオゾン濃度が検出下限界以下となるように、前記オゾン計測手段からの信号に基づいて、前記電気集塵器の作動能力を制御する制御手段と
を備えていることを特徴とする大気浄化装置。 In claim 1 or claim 2,
Ozone measuring means for measuring the ozone concentration in the atmosphere circulated in the nitrogen dioxide absorber;
Control means for controlling the operating capacity of the electrostatic precipitator based on a signal from the ozone measuring means so that the concentration of ozone in the atmosphere flowing through the nitrogen dioxide absorber is below the lower detection limit; An air purification apparatus comprising: 請求項１から請求項３のいずれかの大気浄化装置を使用する大気浄化方法であって、
前記大気流通手段により前記大気を流通させ、
前記電気集塵器により前記大気中の前記浮遊粒子状物を捕集除去すると同時に、当該大気中の酸素をオゾンに転化させて、当該オゾンにより当該大気中の一酸化窒素を二酸化窒素に転化させた後、
前記二酸化窒素吸収器により前記大気中の二酸化窒素を吸収除去する
ことを特徴とする大気浄化方法。 An air purification method using the air purification device according to any one of claims 1 to 3,
Distribute the atmosphere by the atmosphere distribution means;
At the same time as collecting and removing the suspended particulate matter in the atmosphere by the electric dust collector, oxygen in the atmosphere is converted into ozone, and nitrogen monoxide in the atmosphere is converted into nitrogen dioxide by the ozone. After
An air purification method comprising absorbing and removing nitrogen dioxide in the atmosphere by the nitrogen dioxide absorber.
JP2004345176A 2004-11-30 2004-11-30 Air purification apparatus and air purifying method using it Pending JP2006150242A (en)

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KR101827600B1 (en) 2015-06-16 2018-03-23 한국기계연구원 Apparatus for treating exhaust gas
WO2018179988A1 (en) * 2017-03-29 2018-10-04 パナソニックＩｐマネジメント株式会社 Electric dust collector

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JPH07127400A (en) * 1993-10-29 1995-05-16 Matsushita Seiko Co Ltd Denitration device
JPH1028897A (en) * 1996-07-19 1998-02-03 Mitsubishi Heavy Ind Ltd Electric precipitator
JP2003286800A (en) * 2002-03-28 2003-10-10 Matsushita Ecology Systems Co Ltd No2 denitrification system
JP2004275834A (en) * 2003-03-13 2004-10-07 Metropolitan Expressway Public Corp Method and device for controlling electric precipitator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0639519U (en) * 1992-11-06 1994-05-27 株式会社ゼクセル Air purifier
JPH07127400A (en) * 1993-10-29 1995-05-16 Matsushita Seiko Co Ltd Denitration device
JPH1028897A (en) * 1996-07-19 1998-02-03 Mitsubishi Heavy Ind Ltd Electric precipitator
JP2003286800A (en) * 2002-03-28 2003-10-10 Matsushita Ecology Systems Co Ltd No2 denitrification system
JP2004275834A (en) * 2003-03-13 2004-10-07 Metropolitan Expressway Public Corp Method and device for controlling electric precipitator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101827600B1 (en) 2015-06-16 2018-03-23 한국기계연구원 Apparatus for treating exhaust gas
WO2018179988A1 (en) * 2017-03-29 2018-10-04 パナソニックＩｐマネジメント株式会社 Electric dust collector
KR20190126298A (en) * 2017-03-29 2019-11-11 파나소닉 아이피 매니지먼트 가부시키가이샤 Electric dust collector
KR102399657B1 (en) 2017-03-29 2022-05-18 파나소닉 아이피 매니지먼트 가부시키가이샤 electrostatic precipitator

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