JP3212474B2 - Wet electric dust collector - Google Patents

Wet electric dust collector

Info

Publication number
JP3212474B2
JP3212474B2 JP5390495A JP5390495A JP3212474B2 JP 3212474 B2 JP3212474 B2 JP 3212474B2 JP 5390495 A JP5390495 A JP 5390495A JP 5390495 A JP5390495 A JP 5390495A JP 3212474 B2 JP3212474 B2 JP 3212474B2
Authority
JP
Japan
Prior art keywords
dust collecting
collecting electrode
wet
plate
electrode plate
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.)
Expired - Fee Related
Application number
JP5390495A
Other languages
Japanese (ja)
Other versions
JPH08243433A (en
Inventor
裕幸 長澤
召一 大西
富隆 松村
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP5390495A priority Critical patent/JP3212474B2/en
Publication of JPH08243433A publication Critical patent/JPH08243433A/en
Application granted granted Critical
Publication of JP3212474B2 publication Critical patent/JP3212474B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、集塵電極の固定装置を
有する大容量高速流の平行平板湿式電気集塵装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-capacity, high-speed parallel-plate wet-type electrostatic precipitator having a fixing device for a precipitating electrode.

【0002】[0002]

【従来の技術】ボイラプラントにおいては、紫煙発生防
止の為に、その原因となる硫酸ミスト捕集用として排煙
脱硫装置の下流に湿式電気集塵装置(以下湿式EPとい
う)を設置している。
2. Description of the Related Art In a boiler plant, a wet electric dust collector (hereinafter referred to as wet EP) is installed downstream of a flue gas desulfurization unit for collecting sulfuric acid mist, which is a cause for preventing generation of purple smoke. .

【0003】従来の湿式EPは、装置自体がかなり大型
であった為、既設プラントへの追設や、比較的狭い場所
への新設には適さなかった。
[0003] The conventional wet EP is not suitable for additional installation in an existing plant or new installation in a relatively small place because the apparatus itself is quite large.

【0004】そこで煙道に組み込めるコンパクトサイズ
の湿式EPが必要となってきた。
Therefore, a compact wet EP that can be incorporated in a flue has become necessary.

【0005】湿式EP装置をコンパクト化する為には、
従来の装置に比べて主ガス通過断面積を小さくする必要
がある。
In order to make a wet type EP device compact,
It is necessary to reduce the main gas passage cross-sectional area as compared with the conventional apparatus.

【0006】その為には、流速の増大したガスに対応で
きるように高性能化しなければならない。この要求に対
し、すでに垂直流型の高性能湿式EP(図5、図6)が
開発されている。
For this purpose, it is necessary to improve the performance so as to cope with the gas whose flow velocity has increased. In response to this demand, a vertical flow type high performance wet EP (FIGS. 5 and 6) has already been developed.

【0007】しかしながら、垂直流型を設置する為に
は、煙道に垂直部分を設ける必要がある。又、その構造
上、大容量化することは困難である。その為に大容量高
速流の平行平板湿式EPの開発が望まれている。
However, in order to install the vertical flow type, it is necessary to provide a vertical portion in the flue. In addition, it is difficult to increase the capacity due to its structure. Therefore, development of a large capacity, high-speed, parallel-plate wet EP is desired.

【0008】[0008]

【発明が解決しようとする課題】煙道に組み込めるよう
なコンパクトサイズの湿式EPを実現させる為には、煙
道内の流速を考慮すると4m/s以上の高流速に対応で
きることが必要となる。この為にはダスト(ミスト)捕
集性能の高性能化が不可欠である。
In order to realize a compact wet EP that can be incorporated in a flue, it is necessary to be able to cope with a high flow velocity of 4 m / s or more in consideration of the flow velocity in the flue. For this purpose, it is indispensable to improve the performance of dust (mist) collection.

【0009】その為には電流密度を増加させなければな
らない。電流密度を増加するには、電極ピッチを狭める
こと(ナロウスペイシング)が必要である。
For this purpose, the current density must be increased. To increase the current density, it is necessary to narrow the electrode pitch (narrow spacing).

【0010】しかしながら、従来の湿式EPにおける集
塵電極板は、各々上下で、ある程度固定されているが、
隣接する集塵電極同士は連結されていない上、集塵電極
板は薄板で長尺である為、4m/sを超える高流速にな
った場合には各々の集塵電極板が振動し、しかもその振
幅が大きいので、放電極と集塵極との電極にピッチを一
定に保つことが困難になる。
However, the dust collecting electrode plates in the conventional wet EP are fixed to the upper and lower sides to some extent,
Adjacent dust collecting electrodes are not connected to each other, and the dust collecting electrode plates are thin and long, so that when the flow velocity exceeds 4 m / s, each dust collecting electrode plate vibrates, and Because of its large amplitude, it is difficult to keep the pitch between the discharge electrode and the dust collection electrode constant.

【0011】また、ナロウスペイシングにした場合、電
極ピッチの変動が性能を大きく左右する要因となる為、
これを一定に保つことが重要になる。
In the case of narrow spacing, fluctuations in the electrode pitch greatly affect the performance.
It is important to keep this constant.

【0012】本発明はこれらの問題を解決することがで
きる装置を提供することを目的とする。
An object of the present invention is to provide an apparatus capable of solving these problems.

【0013】[0013]

【課題を解決するための手段】本発明に係る湿式電気集
塵装置は、その平面がガス流と平行になるように配置さ
れた集塵電極板の複数をガス流に沿って左右に並べた湿
式電気集塵装置であって前記集塵電極板の左右両端部
に厚みが厚くなった部分を有し、隣接する集塵電極板の
側端の厚みが厚くなった部分相互を両側から挟む一対の
連結板で固定することを特徴とする。
The wet electric precipitator according to the present invention is arranged so that its plane is parallel to the gas flow.
A plurality of collection electrode plates a wet <br/> electric precipitator was side-by-side along the gas stream, the left and right end portions of the dust collecting electrode plate
Has a thicker part, and the adjacent dust collecting electrode plate
A pair of parts sandwiching the part where the thickness of the side end is thicker from both sides
It is characterized by being fixed with a connecting plate .

【0014】すなわち、大容量高速流の平行平板式湿式
EPの集塵電極において、高速流下での振動を抑制する
為に、隣り合う集塵極板同士を数箇所において連結さ
せ、さらに、最上流部での集塵電極と最下流部の集塵電
極については、中間スペーサを用いて結合させることに
より、集塵電極と放電電極の電極ピッチを一定に保つ
ことを特徴とする。
That is, in a large-capacity, high-speed, parallel-plate, wet-type EP dust collecting electrode, adjacent dust collecting electrode plates are connected at several places in order to suppress vibration under a high-speed flow. for dust collecting electrode and the dust collecting electrode at the most downstream portion of the parts, by engaged binding with intermediate spacers, characterized in that to keep the electrode pitch of the collection electrode and the discharge electrode constant.

【0015】[0015]

【作用】従来の電気集塵装置のように、集塵電極が一枚
一枚がバラバラに固定されている時は、かなりの振動が
見られたが、本発明の電気集塵装置のように隣接する集
塵電極同士を連結することにより、振動が軽減され、放
電電極との電極ピッチを一定に保つことが可能になる。
When the dust collecting electrodes are fixed one by one as in a conventional electric dust collector, considerable vibration is observed, but as in the electric dust collector of the present invention. By connecting the adjacent dust collecting electrodes, vibration can be reduced, and the electrode pitch with the discharge electrode can be kept constant.

【0016】その為、安定した平均電流密度を保持する
ことができ、高速流下においても、高効率で、ダスト
(ミスト)の捕集ができる。
Therefore, a stable average current density can be maintained, and dust (mist) can be collected with high efficiency even under a high-speed flow.

【0017】[0017]

【実施例】【Example】

(第1実施例)本発明の第1実施例を図1〜図3に示
す。
(First Embodiment) A first embodiment of the present invention is shown in FIGS.

【0018】図1〜図3に示すように、集塵電極板の固
定装置1を構成する集塵電極板の連結板3と連結板の間
隔片スペーサ4で、集塵電極板2を挟み、隣接する集塵
電極板同士を連結させる。
As shown in FIGS. 1 to 3, the dust collecting electrode plate 2 is sandwiched between the connecting plates 3 of the dust collecting electrode plates and the spacers 4 of the connecting plates constituting the fixing device 1 for the dust collecting electrode plates. Adjacent dust collecting electrode plates are connected to each other.

【0019】また図3に示すように、中間スペーサ爪6
で、最上流部の集塵電極板と最下流部の集塵電極板を挟
み、取り付け板7を中間スペーサ板5に取り付けること
により、集塵電極板の振動を抑制する。
Further, as shown in FIG.
Then, the vibration of the dust collecting electrode plate is suppressed by attaching the mounting plate 7 to the intermediate spacer plate 5 with the dust collecting electrode plate at the most upstream portion and the dust collecting electrode plate at the most downstream portion sandwiched therebetween.

【0020】(第2実施例)図4に示すような集塵電極
板の連結フラットバー8等を用いることにより、隣接す
る集塵電極板同士を連結させて振動を抑制する。
(Second Embodiment) By using a flat bar 8 or the like for connecting a dust collecting electrode plate as shown in FIG. 4, vibrations are suppressed by connecting adjacent dust collecting electrode plates to each other.

【0021】[0021]

【発明の効果】本発明は前述のように構成されているの
で、以下に記載するような効果を奏する。
Since the present invention is configured as described above, it has the following effects.

【0022】(1)集塵電極板の固定装置を有する本発
明の電気集塵装置により、従来の湿式EPでは対応不可
能な4m/sを超える高速流下においても、集塵電極板
の振動を抑制することができる。
(1) The electric dust collecting apparatus of the present invention having a fixing device of the dust collecting electrode plate reduces vibration of the dust collecting electrode plate even under a high-speed flow exceeding 4 m / s, which cannot be handled by the conventional wet EP. Can be suppressed.

【0023】(2)その為、ナロウスペイシングにおい
て、高速流にしても、電極ピッチが一定に保たれている
ので、火花電圧以下で安定した平均電流密度が得られる
様になる。
(2) Therefore, in narrow spacing, even at a high speed, the electrode pitch is kept constant, so that a stable average current density can be obtained below the spark voltage.

【0024】(3)その結果、従来の湿式EPよりも高
性能化することができ、高速流に対応することが可能に
なる。
(3) As a result, the performance can be improved as compared with the conventional wet EP, and it is possible to cope with a high-speed flow.

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

【図1】本発明の第1実施例に係る湿式電気集塵装置の
組立断面図。
FIG. 1 is an assembled sectional view of a wet type electrostatic precipitator according to a first embodiment of the present invention.

【図2】第1実施例の集塵電極板の固定装置を示す図。FIG. 2 is a view showing a fixing device of the dust collecting electrode plate of the first embodiment.

【図3】第1実施例の中間スペーサの爪を示す図。FIG. 3 is a diagram showing claws of an intermediate spacer according to the first embodiment.

【図4】本発明の第2実施例の集塵電極板の連結フラッ
トバーを示す図。
FIG. 4 is a view showing a connection flat bar of a dust collecting electrode plate according to a second embodiment of the present invention.

【図5】従来の垂直流型の高速流湿式電気集塵装置を示
す図。
FIG. 5 is a diagram showing a conventional vertical flow type high-speed wet-type electric precipitator.

【図6】図5の電極の詳細を示す図。FIG. 6 is a diagram showing details of the electrode in FIG. 5;

【符号の説明】[Explanation of symbols]

1…集塵電極板の固定装置、 2…集塵電極板、 3…集塵電極板の連結板、 4…連結板のスペーサ、 5…中間スペーサ、 6…中間スペーサの爪、 7…取り付け板、 8…集塵電極板の連結フラットバー、 9…スペーサ、 10…ボルトナット。 DESCRIPTION OF SYMBOLS 1 ... Dust collecting electrode plate fixing device, 2 ... Dust collecting electrode plate, 3 ... Connecting plate of a dust collecting electrode plate, 4 ... Spacer of a connecting plate, 5 ... Intermediate spacer, 6 ... Intermediate spacer claw, 7 ... Mounting plate , 8: Connection flat bar of the collecting electrode plate, 9: Spacer, 10: Bolt and nut.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−5244(JP,A) 特開 昭59−225759(JP,A) 特開 昭51−33362(JP,A) 実開 昭58−107153(JP,U) 実公 昭10−10381(JP,Y1) (58)調査した分野(Int.Cl.7,DB名) B03C 3/00 - 3/88 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-5244 (JP, A) JP-A-59-225759 (JP, A) JP-A-51-33362 (JP, A) 107153 (JP, U) Jiko 10-10381 (JP, Y1) (58) Field surveyed (Int. Cl. 7 , DB name) B03C 3/00-3/88

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 その平面がガス流と平行になるように配
置された集塵電極板の複数をガス流に沿って左右に並べ
湿式電気集塵装置であって前記集塵電極板の左右両端部に厚みが厚くなった部分を
有し、 隣接する集塵電極板の側端の厚みが厚くなった部分相互
を両側から挟む一対の連結板で固定する ことを特徴とす
る湿式電気集塵装置。
(1) Arranging such that its plane is parallel to the gas flow.
A plurality of placed dust collecting electrode plates are arranged side by side along the gas flow.
And a wet electrostatic precipitator, the thickness was thickened portion on the left and right end portions of the dust collecting electrode plate
And the thicker side edges of adjacent dust collection electrode plates
, Which is fixed by a pair of connecting plates sandwiching the sheet from both sides .
JP5390495A 1995-03-14 1995-03-14 Wet electric dust collector Expired - Fee Related JP3212474B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5390495A JP3212474B2 (en) 1995-03-14 1995-03-14 Wet electric dust collector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5390495A JP3212474B2 (en) 1995-03-14 1995-03-14 Wet electric dust collector

Publications (2)

Publication Number Publication Date
JPH08243433A JPH08243433A (en) 1996-09-24
JP3212474B2 true JP3212474B2 (en) 2001-09-25

Family

ID=12955712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5390495A Expired - Fee Related JP3212474B2 (en) 1995-03-14 1995-03-14 Wet electric dust collector

Country Status (1)

Country Link
JP (1) JP3212474B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4753158B2 (en) * 2005-12-02 2011-08-24 株式会社日立プラントテクノロジー Dust collector plate of electric dust collector
JP2009106899A (en) * 2007-10-31 2009-05-21 Hitachi Plant Technologies Ltd Wet electrostatic precipitator
CN102580431B (en) * 2011-04-20 2015-07-22 庄建中 Dedusting and dusulfuration integration process for smoke
CN104549741A (en) * 2013-10-29 2015-04-29 杭州天明环保工程有限公司 Wet electrostatic dust collector
CN105149097A (en) * 2015-10-14 2015-12-16 成都市智联环境保护设备有限公司 Electric precipitator for removing asphalt in flue gas
CN106076631A (en) * 2016-08-18 2016-11-09 北京国能中电节能环保技术股份有限公司 A kind of cathode line for wet cottrell

Also Published As

Publication number Publication date
JPH08243433A (en) 1996-09-24

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