JP3617305B2 - Wet electrostatic precipitator - Google Patents

Wet electrostatic precipitator Download PDF

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Publication number
JP3617305B2
JP3617305B2 JP10389798A JP10389798A JP3617305B2 JP 3617305 B2 JP3617305 B2 JP 3617305B2 JP 10389798 A JP10389798 A JP 10389798A JP 10389798 A JP10389798 A JP 10389798A JP 3617305 B2 JP3617305 B2 JP 3617305B2
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Prior art keywords
dust collecting
collecting electrode
electrostatic precipitator
electrode
water
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JP10389798A
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JPH11276927A (en
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久男 羽田
美彦 望月
貞夫 榊原
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日立プラント建設株式会社
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【0001】
【発明の属する技術分野】
本発明はノズルより洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器に関し、特に、洗浄スプレーの水滴が集塵電極固定金具より落下することによる火花の頻発を抑えるとともに、処理ガスの高流速時に於けるミスト飛散を低減する構造を有する湿式電気集塵器に関する。
【0002】
【従来の技術】
従来の湿式電気集塵器は、図12に示すように集塵電極1を集塵電極固定金具2により垂直に固定され、その集塵電極1間に放電電極3を碍子室4内の支持碍子5より垂直に下ろして配置され、集塵空間を形成している。集塵電極1は薄板1〜2mm程度の厚さで垂直方向の剛性を持たせる為、集塵電極端部5は図13の丸形(a)、四角形(b)、三角形(c)などに加工されている。集塵電極1は集塵電極固定金具2を両側に付けボルト6、ナット6Aで締め付け垂直に固定される。
集塵空間の上方にはスプレーノズル室7が設けられ、その室内にノズル8を取り付けたヘッダ部が配置されている。ノズル8から洗浄スプレー8Aされた水は集塵電極1面に水膜8Bを形成しながら下方に流れホッパー9に落下し排出装置10により排出される。
放電電極3に負の直流高電圧を印加すると集塵空間を通って放電電極3から集塵電極1(正の接地極)に向かって負イオン電流が流れ(コロナ放電)始める。処理ガスに含んだダスト及びミスト(粒子)を導入すると負イオンにより荷電され、電界により集塵電極1面に吸引された粒子は水膜と共に下方に洗い流される。水膜が形成されない場合、集塵電極に捕集したダストが堆積するため、高電圧極と接地極の間隔が狭くなりスパークを頻発しダスト捕集性能の低下を引き起こす。
【0003】
【発明が解決しようとする課題】
しかし、従来の湿式電気集塵器は洗浄スプレーによる集塵電極及び集塵電極固定金具の面に水膜を形成する場合、図14に示すように集塵電極固定金具2の下部より洗浄スプレーの水滴8Cの落下による火花の発生が頻発するため、十分な直流高電圧が印加できない。
また処理ガスを高流速にすると、図15に示すようにノズルから洗浄スプレーした水がスプレーノズル室7への処理ガスの流れ(バイパスフロー)によって上方に飛散(ミスト飛散)し、集塵電極1の面に到着せず、集塵電極に水膜を形成できなくなり、更には集塵電極の下方の排水空間へ流れ込んで集塵空間をバイパスしてダスト捕集性能を低下させてしまうなどの問題があった。
本発明の目的は、前記従来技術の問題を解消し、ダスト捕集性能を向上させた湿式電気集塵装置を提供することにある。
また本発明の他の目的は、電極への高電圧の印加を可能にした湿式電気集塵器に於ける集塵電極面の水膜形成装置を提供することにある。
更に本発明の他の目的は、ガス流速の高流速時にスプレーノズル室や排水空間に処理ガスがバイパスするのを抑えかつ集塵電極面に十分な水膜形成を可能にした湿式電気集塵器を提供することにある。
【0004】
【課題を解決するための手段】
上記の目的を達成するため、請求項1の発明は洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器において、前記集塵電極の上端を支持する集塵電極固定金具の前記水が吹き付けられる側面に、スプレー水滴を集塵電極面に流す手段を設け、当該手段は集塵電極固定金具から集塵電極面に至る傾斜面を有して水滴を表面に沿って流すようにした構成にある。また請求項2の発明は、請求項1の発明において、前記スプレー水滴を集塵電極面に流す手段は集塵電極面の幅を有する金属板とした構成にある。また請求項3の発明は、洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器において、スプレーノズル室のノズル間に区画板を設置し、集塵電極固定金具から集塵電極面に至る傾斜面を有しスプレー水滴を集塵電極面に流す手段を設けた構成にある。また請求項4の発明は洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器において、前記集塵電極の上端の集塵電極固定金具に吹き付けられたスプレー水滴を集塵電極面に水膜を作って流す傾斜面を有する金属板を設けるとともに、スプレーノズル室のノズル間に区画板を設置した構成にある。更に請求項5の発明は、請求項3又は4の発明において、区画板が電極下端近傍に設置した構成にある。
【0005】
【発明の作用・効果】
ノズルから洗浄スプレーされた水が集塵電極固定金具の側面に当たって形成されるスプレー水滴を集塵電極面に流す手段によって集塵電極固定金具から落下するのを防ぐことによりスプレー水滴による火花の頻発が抑えられ、高電圧の印加が可能となる為、ダスト捕集性能を向上させることができる。
集塵電極固定金具の上端および/または集塵電極下端近傍に区画板を設置することにより、処理ガスの高流速時にスプレーノズル室や電極下方を通るバイパスフローが抑えられ、スプレーノズル室や電極下方に向かった処理ガスによるミスト飛散を防ぎ、集塵電極面の水膜が確実に形成され、ダスト捕集性能が向上される。
【0006】
【発明の実施の形態】
本発明の実施形態を図面を参照しながら説明する。図1は本発明の実施例に係る湿式電気集塵器を示す。
放電電極3は碍子室4内の支持碍子5より垂直に吊り下げて配置されている。集塵電極1は放電電極3の両側に一定間隔に配置され、集塵空間を形成している。この集塵空間には処理ガスに含んだダスト及びミスト(粒子)が図中矢印方向から導入される。そして、図示を省略した直流高電圧電源から出力される直流高電圧は支持碍子5を介して放電電極3に印加される。
【0007】
集塵電極固定金具2の側面には、例えばステンレスで作製された金属板11が固定されている。ノズル8よりスプレーされた水は集塵電極1及び金属板11に注がれ、集塵電極面や金属板面に水滴を形成する。金属板11の水滴は表面に沿って流れ、集塵電極1面に導かれ、集塵電極1面に流れて水膜を形成しながら下方に流れホッパー9に落下した後、排水装置10より排水される。
【0008】
図2は金属板の取付け状態を示す。金属板11は集塵電極1の集塵電極端部5をはさみ集塵電極固定金具2を両側に配置し、金属板11を内側にしてボルト6、ナット6Aで固定される。金属板11は集塵電極1の幅にほぼ同じ幅を有し、集塵電極固定金具2から下方に伸びており、その下縁が集塵電極面に近接して位置されるように折り曲げられている。金属板の折り曲げ角度は、図3に示すように中央部で集塵電極1側へ140゜〜150゜折り曲げて傾斜面11Aを形成し、その下部は集塵電極1にほぼ平行になるよう30゜〜40゜にそれぞれ曲げられている。このような構造により、ノズル8から洗浄スプレーされた水滴は金属板の傾斜面11Aに沿って集塵電極1の面に流れ水膜を形成する。
このように集塵電極の上端を支持する集塵電極固定金具において、洗浄スプレーされた水が吹き付けられる側面に、スプレー水滴を集塵電極面に流す手段として金属板を設けることにより、集塵電極固定金具からの水滴落下が抑制される為、放電電極に直流高電圧の印加が可能になる。
【0009】
図4は集塵電極の取付け上面図、図5は集塵電極の取付け正面図、図6は集塵電極部の組立図である。集塵電極1は両側にボルト6を通す管15を配置し、その両側に集塵電極固定金具2を設け、ボルト6で固定する。このボルト6を利用して、金属板11を放電電極3側に位置する集塵電極固定金具2に配置する。ボルト6は点線で示すように金属板11、集塵電極固定金具2のボルト貫通穴2A、管15及び集塵電極1,管15、集塵電極固定金具2のボルト貫通穴2Aを通しナット6Aで締め付け組み立てる。
【0010】
図7,図8に本発明の変形例を示す。本例は集塵電極1の両側にブロック16を配置し、その両側に集塵電極固定金具2を設け、ボルト6、ナット6Aで締め付け組み立てたことを特徴とするもので、その他の構成については前述の実施例と同様である。ブロック16は集塵電極1の両側に位置させたとき集塵電極1と平行になる集塵電極固定金具2の取付部を有し、この取付部から下方が集塵電極に当接する面に向かって傾斜した面16Aで形成されている。取付部と傾斜面の境には集塵電極固定金具2の板厚にほぼ等しい幅の段部分16Aを設け、取付部に集塵電極固定金具2を添えて固定したとき集塵電極固定金具の外側面と傾斜面との間に段差が生じないようになっている。
この変形例によれば、ブロック16は前述の実施例に於ける集塵電極の押さえ部品としての管15と水滴を集塵電極に流す部品としての金属板11を兼ねているので、部品数を減らし、組み立て時間の短縮を図ることができるとともに、前記実施例と同等の効果が得られる。
【0011】
図9は本発明に係る他の実施形態の湿式電気集塵器の概念図である。本例に示す湿式電気集塵器はスプレーノズル室7のノズル8間に区画板20を取り付けた構造に特徴を有する。区画板20は集塵電極固定金具2の上端に配置されており、処理ガスの高流速時にスプレーノズル室7を通るバイパスフローを抑える機能を有する。この区画板20を設置することによりスプレーノズル室7に向かった処理ガスによるミスト飛散が低減されダスト捕集性能が向上される。
【0012】
また区画板20には集塵電極1と放電電極3の間に形成される集塵空間内にわずかに入り込むんだ突出部分20Aが設けられている。図10において、突出部分20Aは集塵電極固定金具2の側方に位置し、そこを通る処理ガスを集塵空間に向けることによりミスト飛散を抑えるのに更に有効である。
洗浄スプレー8Aの下部の処理ガス流速を測定した結果を図11に示す。ノズル8間に区画板20を取り付けた場合と区画板無し及びノズルNo.3とNo.4の間に区画板1枚を取り付けた場合である。またスプレー水飛散限界の測定結果から区画板の設置で処理ガス流速を飛散限界流速以下にすることができる。
【0013】
区画板の実施形態としてはスプレーノズル室7に設置した構成を説明したが、処理ガスが電極下方の排水空間にバイパスするのを抑える為、電極下端近傍に1又は複数の区画板を設置することで、上記バイパスフローを抑えることによりダスト捕集性能を更に向上させることができる。
【図面の簡単な説明】
【図1】本発明に係る湿式電気集塵器の概念図である。
【図2】図1のI矢視図である。
【図3】スプレー水滴を集塵電極面に流す手段としての金属板の側面図である。
【図4】集塵電極の取付け上面図である。
【図5】集塵電極の取付け正面図である。
【図6】集塵電極部の組立図である。
【図7】スプレー水滴を集塵電極面に流す手段の他の実施例の側面図である。
【図8】図7の他の実施例の斜視図である。
【図9】本発明に係る湿式電気集塵器の他の実施形態の概念図である。
【図10】図9のII矢視図である。
【図11】スプレーノズル室下部のガス流速と区画板の関係を示す図である。
【図12】従来の湿式電気集塵器の概念図である。
【図13】集塵電極端部の構成図である。
【図14】集塵電極固定金具からスプレー水滴が落下したときの火花発生の説明図である。
【図15】ガス流速の高流速時に於けるミスト飛散の説明図である。
【符号の説明】
1…集塵電極、2…集塵電極固定金具、3…放電電極、4…碍子室、7…スプレーノズル室、8…ノズル、9…ホッパー、10…排水装置、11…金属板、16…ブロック
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wet type electrostatic precipitator that cleans the surface of the dust collection electrode with water sprayed from a nozzle, and in particular, suppresses frequent occurrence of sparks due to water droplets of the cleaning spray falling from the dust collection electrode fixing bracket, The present invention relates to a wet electrostatic precipitator having a structure for reducing mist scattering at a high flow rate of a processing gas.
[0002]
[Prior art]
As shown in FIG. 12, a conventional wet electrostatic precipitator has a dust collecting electrode 1 fixed vertically by a dust collecting electrode fixing bracket 2, and a discharge electrode 3 is supported between the dust collecting electrodes 1 and a supporting insulator in an insulator chamber 4. 5 is arranged vertically downward to form a dust collection space. Since the dust collecting electrode 1 has a thickness of about 1 to 2 mm from a thin plate and has vertical rigidity, the dust collecting electrode end portion 5 has a round shape (a), a square shape (b), a triangular shape (c) in FIG. Has been processed. The dust collecting electrode 1 is fixed vertically by tightening a dust collecting electrode fixing bracket 2 on both sides with bolts 6 and nuts 6A.
A spray nozzle chamber 7 is provided above the dust collection space, and a header portion to which the nozzle 8 is attached is disposed in the chamber. The water sprayed by the cleaning spray 8A from the nozzle 8 flows downward while forming a water film 8B on the surface of the dust collecting electrode 1 and falls to the hopper 9 and is discharged by the discharge device 10.
When a negative DC high voltage is applied to the discharge electrode 3, negative ion current begins to flow (corona discharge) from the discharge electrode 3 toward the dust collection electrode 1 (positive ground electrode) through the dust collection space. When dust and mist (particles) contained in the processing gas are introduced, the particles charged by negative ions and attracted to the surface of the dust collecting electrode 1 by the electric field are washed down together with the water film. When the water film is not formed, the dust collected on the dust collecting electrode accumulates, so that the interval between the high voltage electrode and the ground electrode is narrowed, and sparks occur frequently, resulting in a decrease in dust collecting performance.
[0003]
[Problems to be solved by the invention]
However, in the conventional wet electrostatic precipitator, when a water film is formed on the surface of the dust collecting electrode and the dust collecting electrode fixing bracket by the cleaning spray, as shown in FIG. Since sparks frequently occur due to the drop of the water droplet 8C, a sufficient DC high voltage cannot be applied.
Further, when the processing gas is set to a high flow rate, as shown in FIG. 15, the water sprayed and sprayed from the nozzles is scattered upward (mist scattering) by the processing gas flow (bypass flow) to the spray nozzle chamber 7, and the dust collecting electrode 1 The water collecting film cannot be formed on the dust collecting electrode, and it flows into the drainage space below the dust collecting electrode, bypassing the dust collecting space and reducing the dust collecting performance. was there.
An object of the present invention is to provide a wet type electrostatic precipitator that solves the problems of the prior art and has improved dust collection performance.
Another object of the present invention is to provide an apparatus for forming a water film on the surface of a dust collecting electrode in a wet type electrostatic precipitator capable of applying a high voltage to the electrode.
Still another object of the present invention is to provide a wet type electrostatic precipitator that suppresses the bypass of the processing gas to the spray nozzle chamber and the drainage space when the gas flow rate is high, and allows a sufficient water film to be formed on the dust collecting electrode surface. Is to provide.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is a wet type electrostatic precipitator that cleans the surface of the dust collecting electrode with water that has been sprayed and sprayed. A means for flowing spray water droplets onto the surface of the dust collecting electrode is provided on the side surface to which the water is sprayed, and the means has an inclined surface from the dust collecting electrode fixing bracket to the dust collecting electrode surface so that the water droplets flow along the surface. In the configuration. According to a second aspect of the present invention, in the first aspect of the invention, the means for flowing the spray water droplets onto the dust collecting electrode surface is a metal plate having a width of the dust collecting electrode surface . According to a third aspect of the present invention, there is provided a wet electric dust collector for cleaning a dust collecting electrode surface with cleaning sprayed water, wherein a partition plate is installed between the nozzles of the spray nozzle chamber, and the dust collecting electrode fixing bracket is used for collecting dust. It has the structure which has the inclined surface which reaches an electrode surface, and provided the means to flow a spray water droplet to a dust collection electrode surface . According to a fourth aspect of the present invention, there is provided a wet-type electrostatic precipitator that cleans the surface of the dust collecting electrode with water that has been sprayed and sprayed. A metal plate having an inclined surface that flows by forming a water film on the surface is provided, and a partition plate is installed between the nozzles of the spray nozzle chamber. Furthermore, the invention of claim 5 is the invention of claim 3 or 4 , wherein the partition plate is installed in the vicinity of the lower end of the electrode.
[0005]
[Operation and effect of the invention]
Preventing the sprayed water droplets from falling from the dust collecting electrode fixing bracket by preventing the sprayed water droplets that are sprayed from the nozzle from hitting the side surface of the dust collecting electrode fixing bracket from flowing onto the dust collecting electrode surface. Since it is suppressed and a high voltage can be applied, dust collection performance can be improved.
By installing a partition plate near the upper end of the dust collection electrode fixture and / or near the lower end of the dust collection electrode, bypass flow that passes through the spray nozzle chamber and the lower part of the electrode at the high flow rate of the processing gas can be suppressed. This prevents mist scattering by the processing gas toward the surface, reliably forms a water film on the surface of the dust collection electrode, and improves dust collection performance.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a wet electrostatic precipitator according to an embodiment of the present invention.
The discharge electrode 3 is arranged vertically suspended from the support insulator 5 in the insulator chamber 4. The dust collection electrodes 1 are arranged at regular intervals on both sides of the discharge electrode 3 to form a dust collection space. Dust and mist (particles) contained in the processing gas are introduced into the dust collection space from the direction of the arrow in the figure. A DC high voltage output from a DC high voltage power supply (not shown) is applied to the discharge electrode 3 via the support insulator 5.
[0007]
A metal plate 11 made of, for example, stainless steel is fixed to the side surface of the dust collecting electrode fixing bracket 2. The water sprayed from the nozzle 8 is poured into the dust collecting electrode 1 and the metal plate 11 to form water droplets on the dust collecting electrode surface and the metal plate surface. The water droplets on the metal plate 11 flow along the surface, are guided to the surface of the dust collecting electrode 1, flow downward on the surface of the dust collecting electrode 1 to form a water film, fall down to the hopper 9, and then drain from the drainage device 10. Is done.
[0008]
FIG. 2 shows an attached state of the metal plate. The metal plate 11 is fixed with bolts 6 and nuts 6A with the dust collection electrode end portions 5 of the dust collection electrode 1 sandwiched between them and the dust collection electrode fixing metal fittings 2 disposed on both sides, with the metal plate 11 facing inside. The metal plate 11 has substantially the same width as that of the dust collection electrode 1, extends downward from the dust collection electrode fixture 2, and is bent so that its lower edge is positioned close to the dust collection electrode surface. ing. As shown in FIG. 3, the metal plate is bent at an angle of 140 ° to 150 ° toward the dust collecting electrode 1 to form the inclined surface 11A, and its lower portion is substantially parallel to the dust collecting electrode 1. Each of them is bent to -40 °. With such a structure, water droplets cleaned and sprayed from the nozzle 8 flow on the surface of the dust collecting electrode 1 along the inclined surface 11A of the metal plate to form a water film.
In the dust collecting electrode fixing bracket that supports the upper end of the dust collecting electrode in this way, a dust collecting electrode is provided by providing a metal plate as a means for flowing spray water droplets on the dust collecting electrode surface on the side surface to which the spray water is sprayed. Since the drop of water droplets from the fixture is suppressed, a DC high voltage can be applied to the discharge electrode.
[0009]
4 is a top view of mounting of the dust collecting electrode, FIG. 5 is a front view of mounting of the dust collecting electrode, and FIG. 6 is an assembly drawing of the dust collecting electrode portion. The dust collecting electrode 1 is provided with pipes 15 through which the bolts 6 pass on both sides, and dust collecting electrode fixing fittings 2 are provided on both sides of the dust collecting electrodes 1 and fixed with the bolts 6. Using this bolt 6, the metal plate 11 is placed on the dust collecting electrode fixture 2 located on the discharge electrode 3 side. The bolt 6 passes through the metal plate 11, the bolt through hole 2A of the dust collecting electrode fixing bracket 2, the pipe 15 and the dust collecting electrode 1, the pipe 15, and the bolt through hole 2A of the dust collecting electrode fixing bracket 2 as shown by the dotted line. Assemble and tighten.
[0010]
7 and 8 show modifications of the present invention. This example is characterized in that blocks 16 are arranged on both sides of the dust collecting electrode 1, dust collecting electrode fixing metal fittings 2 are provided on both sides thereof, and tightened and assembled with bolts 6 and nuts 6A. This is the same as the previous embodiment. The block 16 has a mounting portion for the dust collecting electrode fixing bracket 2 that is parallel to the dust collecting electrode 1 when positioned on both sides of the dust collecting electrode 1, and the lower side from this mounting portion faces the surface that contacts the dust collecting electrode. It is formed by the inclined surface 16A. A step portion 16A having a width substantially equal to the plate thickness of the dust collecting electrode fixing bracket 2 is provided at the boundary between the mounting portion and the inclined surface, and the dust collecting electrode fixing bracket is fixed when the dust collecting electrode fixing bracket 2 is fixed to the mounting portion. There is no step between the outer surface and the inclined surface.
According to this modification, the block 16 serves as both the tube 15 as the dust collecting electrode holding part and the metal plate 11 as the part for flowing water droplets to the dust collecting electrode in the above-described embodiment. As a result, the assembly time can be shortened, and the same effect as in the above embodiment can be obtained.
[0011]
FIG. 9 is a conceptual diagram of a wet electrostatic precipitator according to another embodiment of the present invention. The wet electrostatic precipitator shown in this example is characterized by a structure in which a partition plate 20 is attached between the nozzles 8 of the spray nozzle chamber 7. The partition plate 20 is disposed at the upper end of the dust collecting electrode fixing bracket 2 and has a function of suppressing a bypass flow that passes through the spray nozzle chamber 7 at a high flow rate of the processing gas. By installing the partition plate 20, mist scattering due to the processing gas toward the spray nozzle chamber 7 is reduced, and dust collection performance is improved.
[0012]
Further, the partition plate 20 is provided with a protruding portion 20 </ b> A that slightly enters a dust collection space formed between the dust collection electrode 1 and the discharge electrode 3. In FIG. 10, the protruding portion 20A is located on the side of the dust collecting electrode fixture 2, and is more effective in suppressing mist scattering by directing the processing gas passing therethrough to the dust collecting space.
FIG. 11 shows the result of measuring the processing gas flow rate in the lower part of the cleaning spray 8A. When the partition plate 20 is attached between the nozzles 8 and when there is no partition plate and the nozzle no. 3 and no. This is a case where one partition plate is attached between the four. In addition, from the measurement result of the spray water scattering limit, the processing gas flow rate can be reduced below the scattering limit flow rate by installing a partition plate.
[0013]
As an embodiment of the partition plate, the configuration installed in the spray nozzle chamber 7 has been described. However, in order to prevent the processing gas from bypassing the drainage space below the electrode, one or more partition plates should be installed near the lower end of the electrode. Thus, dust collection performance can be further improved by suppressing the bypass flow.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a wet electrostatic precipitator according to the present invention.
FIG. 2 is a view taken in the direction of arrow I in FIG.
FIG. 3 is a side view of a metal plate as a means for flowing spray water droplets onto a dust collecting electrode surface.
FIG. 4 is a top view of attachment of a dust collecting electrode.
FIG. 5 is a mounting front view of a dust collecting electrode.
FIG. 6 is an assembly drawing of a dust collecting electrode part.
FIG. 7 is a side view of another embodiment of the means for flowing spray water droplets onto the dust collecting electrode surface.
FIG. 8 is a perspective view of another embodiment of FIG. 7;
FIG. 9 is a conceptual diagram of another embodiment of a wet electrostatic precipitator according to the present invention.
10 is a view taken in the direction of arrow II in FIG.
FIG. 11 is a diagram showing the relationship between the gas flow rate in the lower part of the spray nozzle chamber and the partition plate.
FIG. 12 is a conceptual diagram of a conventional wet electrostatic precipitator.
FIG. 13 is a configuration diagram of an end portion of a dust collecting electrode.
FIG. 14 is an explanatory view of the generation of a spark when a spray water droplet falls from the dust collecting electrode fixing bracket.
FIG. 15 is an explanatory diagram of mist scattering at a high gas flow rate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Dust collection electrode, 2 ... Dust collection electrode fixture, 3 ... Discharge electrode, 4 ... Insulator chamber, 7 ... Spray nozzle chamber, 8 ... Nozzle, 9 ... Hopper, 10 ... Drainage device, 11 ... Metal plate, 16 ... block

Claims (5)

洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器において、前記集塵電極の上端を支持する集塵電極固定金具の前記水が吹き付けられる側面に、スプレー水滴を集塵電極面に流す手段を設け、当該手段は集塵電極固定金具から集塵電極面に至る傾斜面を有して水滴を表面に沿って流すようにしたことを特徴とする湿式電気集塵器。In a wet type electrostatic precipitator that cleans the surface of the dust collecting electrode with water that has been cleaned and sprayed, spray water droplets are applied to the side of the dust collecting electrode fixing bracket that supports the upper end of the dust collecting electrode to which the water is sprayed. A wet type electrostatic precipitator characterized in that means for flowing on the surface is provided, and the means has an inclined surface extending from the dust collecting electrode fixing bracket to the dust collecting electrode surface so that water droplets flow along the surface . 前記スプレー水滴を集塵電極面に流す手段は集塵電極面の幅を有する金属板からなることを特徴とする請求項1記載の湿式電気集塵器。2. The wet electrostatic precipitator according to claim 1, wherein the means for causing the spray water droplets to flow on the surface of the dust collecting electrode comprises a metal plate having a width of the dust collecting electrode surface . 洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器において、スプレーノズル室のノズル間に区画板を設置し、集塵電極固定金具から集塵電極面に至る傾斜面を有しスプレー水滴を集塵電極面に流す手段を設けたことを特徴とする湿式電気集塵器。In a wet type electrostatic precipitator that cleans the dust collecting electrode surface with water that has been cleaned and sprayed, a partition plate is installed between the nozzles in the spray nozzle chamber, and there is an inclined surface from the dust collecting electrode fixing bracket to the dust collecting electrode surface. A wet type electrostatic precipitator provided with means for flowing spray water droplets onto the surface of the dust collecting electrode . 洗浄スプレーされた水で集塵電極面の洗浄を行う湿式電気集塵器において、前記集塵電極の上端の集塵電極固定金具に吹き付けられたスプレー水滴を集塵電極面に水膜を作って流す傾斜面を有する金属板を設けるとともに、スプレーノズル室のノズル間に区画板を設置したことを特徴とする湿式電気集塵器。In a wet electrostatic precipitator that cleans the dust collecting electrode surface with water that has been washed and sprayed, a water film is formed on the dust collecting electrode surface by spraying water droplets sprayed on the dust collecting electrode fixing bracket at the upper end of the dust collecting electrode. A wet type electrostatic precipitator characterized in that a metal plate having an inclined surface to flow is provided and a partition plate is installed between nozzles of a spray nozzle chamber. 前記区画板が電極下端近傍に設置されていることを特徴とする請求項3〜4のいずれかに記載された湿式電気集塵器。The wet electrostatic precipitator according to any one of claims 3 to 4 , wherein the partition plate is installed in the vicinity of the lower end of the electrode.
JP10389798A 1998-03-31 1998-03-31 Wet electrostatic precipitator Expired - Lifetime JP3617305B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5879470B2 (en) * 2010-01-18 2016-03-08 パナソニックIpマネジメント株式会社 Dust collector
JP6898040B2 (en) * 2017-03-31 2021-07-07 住友金属鉱山エンジニアリング株式会社 Wet electrostatic precipitator, control device for wet electrostatic precipitator
CN111947239B (en) * 2019-05-14 2022-06-21 斗山重工业建设有限公司 Dust collecting device for air conditioning system and air conditioning device comprising same

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