JP3495482B2 - Duct type wet electric precipitator - Google Patents
Duct type wet electric precipitatorInfo
- Publication number
- JP3495482B2 JP3495482B2 JP30107395A JP30107395A JP3495482B2 JP 3495482 B2 JP3495482 B2 JP 3495482B2 JP 30107395 A JP30107395 A JP 30107395A JP 30107395 A JP30107395 A JP 30107395A JP 3495482 B2 JP3495482 B2 JP 3495482B2
- Authority
- JP
- Japan
- Prior art keywords
- support
- insulator
- box
- support insulator
- duct
- 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
Links
Landscapes
- Electrostatic Separation (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は腐食の防止を図った
ダクト型湿式電気集塵装置に関する。TECHNICAL FIELD The present invention aims to prevent corrosion.
About the da ECTS type wet electrostatic precipitator.
【０００２】[0002]
【従来の技術】ボイラプラントにおいては、紫煙防止の
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を設置している。装置の
コンパクト化の要求に対し、排煙脱硫装置下流の煙道と
同じ断面積で集塵できるよう考案されたのがダクト型湿
式電気集塵装置である。図７と図８に従来のダクト型湿
式電気集塵装置の全体構成を示す。2. Description of the Related Art In a boiler plant, in order to prevent purple smoke, a wet electrostatic precipitator is installed downstream of a flue gas desulfurizer for collecting sulfuric acid mist which causes the smoke. The duct type wet electrostatic precipitator was devised to collect dust with the same cross-sectional area as the flue downstream of the flue gas desulfurizer in response to the demand for compact equipment. 7 and 8 show the overall structure of a conventional duct type wet electrostatic precipitator.
【０００３】 煙道ダクト０１は、縦横に配設された複
数枚の集塵電極２により仕切られ、複数の小ダクトが形
成されている。各集塵電極２により仕切られた小ダクト
の中心に棒状の放電極３が配置されている。各放電極３
の上方および下方端は上部支持枠４および下部支持枠６
に結合されている。The flue duct 01 is partitioned by a plurality of dust collecting electrodes 2 arranged vertically and horizontally to form a plurality of small ducts. A rod-shaped discharge electrode 3 is arranged at the center of a small duct partitioned by each dust collection electrode 2. Each discharge electrode 3
Upper and lower ends of the upper support frame 4 and the lower support frame 6
Is bound to.
【０００４】 集塵電極２の上方および下方でかつ煙道
ダクトの外面隅部には、サポート碍子支持箱７が取付け
られている。この支持箱７にサポート碍子５を介して上
部支持枠４および下部支持枠６の左右端が取付けられて
いる。すなわち上下それぞれ４カ所で固定されている。A support insulator support box 7 is attached above and below the dust collection electrode 2 and at the outer corner of the flue duct. On top of this support box 7 via the support insulator 5.
Part support frame 4 and the lower portion right and left ends of the support frame 6 is mounted. In other words, it is fixed at four places on the top and bottom respectively.
【０００５】このサポート碍子５は、放電電極３と本体
１とを電気的に絶縁する役割をももっている。サポート
碍子５表面にガス中の水分が結露すると高電圧側（放電
々極側）から接地側（本体側）に急激な電気の流れが生
じ、サポート碍子５の割れを生じさせる為、サポート碍
子５表面にガス中の水分が結露しない様に、サポート碍
子支持箱７の上部には電気ヒーター１３が設置されてい
る。The support insulator 5 also serves to electrically insulate the discharge electrode 3 and the body 1 from each other. When the moisture in the gas is condensed on the surface of the support insulator 5, a sudden flow of electricity is generated from the high voltage side (discharge pole side) to the ground side (main body side), and the support insulator 5 is cracked. An electric heater 13 is installed above the support insulator support box 7 so that water in the gas does not condense on the surface.
【０００６】[0006]
【発明が解決しようとする課題】サポート碍子支持箱
（以下支持箱）は、ダクト型湿式電気集塵装置の外側に
設置されている。ダクト型湿式電気集塵装置内を流れる
ガスは、支持箱の開口部において支持箱内部へ入ろうと
する流れを生じ、一部は支持箱内部に滞留する。滞留し
たガスは外気によって温度が低下する。このガスは硫酸
ミスト（以下ＳＯ3ミスト）を含んでいるので、ガス温
度が酸露点以下になるとＳＯ3 ミストが析出する。さら
に一定期間経過後、支持箱内部にＳＯ3 ミストが濃縮さ
れる為、その部分には激しい腐食が生じる。一方、電気
ヒータ付近は逆に温度が高い為、支持箱表面は乾いてお
り、濃縮したＳＯ3 ミストの存在するカ所との境界線で
は、乾湿の差により、更に激しい腐食が生じるといった
問題点があった。The support insulator support box (hereinafter referred to as the support box) is installed outside the duct type wet electrostatic precipitator. The gas flowing in the duct type wet electrostatic precipitator causes a flow to enter the inside of the support box at the opening of the support box, and a part of the gas stays inside the support box. The temperature of the accumulated gas is lowered by the outside air. Since this gas contains sulfuric acid mist (hereinafter referred to as SO 3 mist), SO 3 mist is deposited when the gas temperature becomes equal to or lower than the acid dew point. Further, after a certain period of time, SO 3 mist is concentrated inside the support box, so that severe corrosion occurs in that portion. On the other hand, since the temperature is high near the electric heater, the surface of the support box is dry, and at the boundary line with the concentrated SO 3 mist, there is a problem that more severe corrosion occurs due to the difference in dryness and humidity. there were.
【０００７】[0007]
【課題を解決するための手段】本発明は上記課題を解決
するため次の手段を講ずる。
（１）煙道ダクトの横断面を仕切って複数の小ダクトを
形成する集塵電極と、同各小ダクトの中心に配設された
棒状の放電電極と、上記集塵電極の上方および下方でか
つ上記煙道ダクトの外面隅部において対向して取付けら
れたサポート碍子支持箱と、上記各サポート碍子支持箱
の上面に配設されたサポート碍子と、上記各放電電極の
上方端が結合されかつ左右端が上記サポート碍子を介し
て上方の上記サポート碍子支持箱に取付けられる上部支
持枠と、上記各放電電極の下方端が結合されかつ左右端
が上記サポート碍子を介して下方の上記サポート碍子支
持箱に取付けられる下部支持枠とを有するダクト型湿式
電気集塵装置において、上記サポート碍子支持箱の先端
面ａ近くの側面に結合された空気配管と、同サポート碍
子支持箱の上記サポート支持碍子近くの内面でかつ上記
サポート支持碍子と空気配管との間に設けられた整流手
段とを設ける。The present invention takes the following means in order to solve the above problems. (1) A dust collecting electrode that divides the cross section of the flue duct to form a plurality of small ducts, a rod-shaped discharge electrode arranged at the center of each small duct , and above and below the dust collecting electrodes. and a support insulator supporting box mounted in Oite opposed to the outer surface corner portion of the flue duct, and support insulators which are disposed on the upper surface of each support insulator supporting box, the upper end of each discharge electrode coupling And the left and right ends are connected to the upper support frame, which is attached to the upper support insulator support box via the support insulator, and the lower ends of the respective discharge electrodes are coupled, and the left and right ends are the lower support via the support insulator. in ducted wet electrostatic precipitator and a lower support frame attached to the insulator support box, the air line coupled to the front end surface a near side of the support insulator support box, the support of the support insulator supporting box Over preparative supporting insulators near the inner surface and providing a rectifying means provided between the support supporting insulator and the air pipe.
【０００８】以上において、空気配管より空気が供給さ
れると、サポート支持碍子支持箱の先端面近くから流れ
込み、整流手段で整流されて、ほぼ均一な流れとなって
煙道ダクト内へと流れる。従って、硫酸ミストを含んだ
ガスは、この部分に滞留することがなくなり、腐食の発
生が生じない。In the above, when air is supplied from the air pipe, it flows in from the vicinity of the front end surface of the support supporting insulator support box, is rectified by the rectifying means, and becomes a substantially uniform flow into the flue duct. Therefore, the gas containing sulfuric acid mist does not stay in this portion, and corrosion does not occur.
【０００９】 このようにして腐食の発生、およびその
進行が防止される。
（２）煙道ダクトの横断面を仕切って複数の小ダクトを
形成する集塵電極と、同各小ダクトの中心に配設された
棒状の放電電極と、上記集塵電極の上方および下方でか
つ上記煙道ダクトの外面隅部において対向して取付けら
れたサポート碍子支持箱と、上記各サポート碍子支持箱
の上面に配設されたサポート碍子と、上記各放電電極の
上方端が結合されかつ左右端が上記サポート碍子を介し
て上方の上記サポート碍子支持箱に取付けられる上部支
持枠と、上記各放電電極の下方端が結合されかつ左右端
が上記サポート碍子を介して下方の上記サポート碍子支
持箱に取付けられる下部支持枠とを有するダクト型湿式
電気集塵装置において、上記サポート碍子支持箱内に設
けられ上記サポート碍子には向かず上記サポート碍子支
持箱の内面下方に向けた噴口を持つノズルと、同ノズル
に結合された配管とを設ける。In this way, the occurrence of corrosion and its progress are prevented. (2) A dust collecting electrode that divides the cross section of the flue duct to form a plurality of small ducts, a rod-shaped discharge electrode disposed at the center of each small duct , and above and below the dust collecting electrodes. and a support insulator supporting box mounted in Oite opposed to the outer surface corner portion of the flue duct, and support insulators which are disposed on the upper surface of each support insulator supporting box, the upper ends of the respective discharge electrodes coupled And the left and right ends are connected to the upper support frame, which is attached to the upper support insulator support box via the support insulator, and the lower ends of the respective discharge electrodes are coupled, and the left and right ends are the lower support via the support insulator. in ducted wet electrostatic precipitator and a lower support frame attached to the insulator support box, the inner surface below the support insulator support box is not suitable to the support insulators provided in the support insulator support box in Only a nozzle having a nozzle hole was provided with a pipe coupled to the nozzle.
【００１０】 以上において、配管からは水またはアル
カリ溶液が常時または定期的に供給され、ノズルから支
持箱の内面下方に向け噴霧される。このようにして、常
時または定期的に内面が洗浄されることにより、硫酸ミ
ストの濃縮が防止される。In the above, water or an alkaline solution is constantly or periodically supplied from the pipe and sprayed from the nozzle toward the lower inner surface of the support box. In this way, the inner surface is constantly or regularly washed to prevent the concentration of sulfuric acid mist.
【００１１】従って、腐食の発生およびその進行が防止
される。Therefore, the occurrence and progress of corrosion can be prevented.
【００１２】[0012]
（１）本発明１の実施の一形態を図１〜図３により説明
する。図２は図１のＡ部詳細図、図３は図２のＢ−Ｂ視
図である。なお、従来例で説明した部分は、同一の番号
をつけ説明を省略し、この発明に関する部分を主体に説
明する。(1) An embodiment of the present invention 1 will be described with reference to FIGS. 2 is a detailed view of a portion A of FIG. 1, and FIG. 3 is a view taken along line BB of FIG. It should be noted that the parts described in the conventional example are denoted by the same reference numerals and the description thereof is omitted, and the parts relating to the present invention will be mainly described.
【００１３】図１〜図３にて、サポート碍子支持箱７の
先端面ａの近くの側面に、先端面に平行な長穴８があけ
られる。この長穴８に結合する空気配管９が設けられ、
空気源につながれる。さらにサポート碍子５の近くの内
面に整流用の金網１０が張られる。1 to 3, an elongated hole 8 parallel to the tip surface is formed on the side surface of the support insulator support box 7 near the tip surface a. An air pipe 9 connected to this elongated hole 8 is provided,
Connected to an air source. Further, a wire mesh 10 for straightening is stretched on the inner surface near the support insulator 5.
【００１４】以上において、空気配管９より空気が供給
されると、サポート支持碍子支持箱７の先端面ａ近くか
ら流れ込み、金網１０で整流されて、ほぼ均一な流れと
なって煙道ダクト内へと流れる。従って、硫酸ミストを
含んだガスは、この部分に滞留することがなくなり、腐
食の発生が生じない。In the above, when air is supplied from the air pipe 9, it flows from near the tip surface a of the support support insulator support box 7, is rectified by the wire mesh 10, and becomes a substantially uniform flow into the flue duct. Flows. Therefore, the gas containing sulfuric acid mist does not stay in this portion, and corrosion does not occur.
【００１５】このようにして腐食の発生、およびその進
行が防止される。
（２）本発明２の実施の一形態を図４〜図６により説明
する。図５は図４のＣ部詳細図、図６は図５のＤ−Ｄ視
図である。なお、従来例で説明した部分は、同一の番号
をつけ説明を省略し、この発明に関する部分を主体に説
明する。In this way, the occurrence of corrosion and its progress are prevented. (2) An embodiment of the present invention 2 will be described with reference to FIGS. 5 is a detailed view of the C portion of FIG. 4, and FIG. 6 is a view taken along the line D-D of FIG. It should be noted that the parts described in the conventional example are denoted by the same reference numerals and the description thereof is omitted, and the parts relating to the present invention will be mainly described.
【００１６】 図４〜図６にて、サポート碍子支持箱７
の先端部の内部に、内面下方に噴口を向けてノズル１２
が配置される。ノズル１２は配管１１につながれ、水ま
たはＮａＯＨ等のアルカリ溶液供給源につながれる。In FIGS. 4 to 6, the support insulator support box 7 is shown.
Inside the tip of the nozzle, the nozzle 12 faces the inner surface downward.
Are placed. The nozzle 12 is connected to a pipe 11 and is connected to a supply source of water or an alkaline solution such as NaOH.
【００１７】以上において、配管１１からは水またはア
ルカリ溶液が常時または定期的に供給され、ノズル１２
から支持箱７の内面に向け噴霧される。このようにし
て、常時または定期的に内面が洗浄されることにより、
硫酸ミストの濃縮が防止される。In the above, water or an alkaline solution is constantly or periodically supplied from the pipe 11, and the nozzle 12
Is sprayed toward the inner surface of the support box 7. In this way, by constantly or regularly cleaning the inner surface,
Concentration of sulfuric acid mist is prevented.
【００１８】従って、腐食の発生およびその進行が防止
される。Therefore, the occurrence and progress of corrosion can be prevented.
【００１９】[0019]
【発明の効果】以上に説明したように本発明によれば、
サポート碍子支持箱内部に硫酸ミストが濃縮されること
を防止できる為、支持箱内面の腐食の発生を防止でき、
かつ発生後の進行を大幅に遅らせることができる。した
がって、装置の寿命を長くすることができる。また支持
箱の材料が安価なものでよくなり、装置全体のコストダ
ウンになる。As described above, according to the present invention,
Since it is possible to prevent sulfuric acid mist from concentrating inside the support insulator support box, it is possible to prevent corrosion on the inner surface of the support box.
In addition, the progress after the occurrence can be significantly delayed. Therefore, the life of the device can be extended. Moreover, the cost of the entire apparatus can be reduced because the material of the support box can be inexpensive.
【図１】本発明１の一形態の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention 1.
【図２】同一形態の図１のＡ部詳細図である。FIG. 2 is a detailed view of a portion A of FIG. 1 having the same configuration.
【図３】同一形態の図２のＢ−Ｂ視図である。3 is a BB view of FIG. 2 of the same form.
【図４】本発明２の一形態の断面図である。FIG. 4 is a sectional view of an embodiment of the present invention 2.
【図５】同一形態の図４のＣ部詳細図である。5 is a detailed view of a portion C of FIG. 4 having the same configuration.
【図６】同一形態の図５のＤ−Ｄ視図である。FIG. 6 is a DD view of the same configuration as FIG.
【図７】従来例の断面図である。FIG. 7 is a sectional view of a conventional example.
【図８】同従来例の横断面図である。FIG. 8 is a transverse sectional view of the conventional example.
０１ 煙道 １ ダクト型湿式電気集塵装置 ２ 集塵電極 ３ 放電電極 ４ 放電電極上部支持枠 ５ サポート碍子 ６ 放電電極下部支持枠 ７ サポート碍子支持箱 ９ 空気配管 １０ 金網 １１ 洗浄配管 １２ ノズル １３ 電気ヒーター 01 flue 1 Duct type wet electrostatic precipitator 2 Dust collecting electrode 3 discharge electrodes 4 Discharge electrode upper support frame 5 Support insulator 6 Discharge electrode lower support frame 7 Support insulator support box 9 Air piping 10 wire mesh 11 Cleaning pipe 12 nozzles 13 Electric heater
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ０３Ｃ 3/70 Ｂ０３Ｃ 3/70 Ｚ (56)参考文献 特開 平６−31203（ＪＰ，Ａ) 実開 昭62−126263（ＪＰ，Ｕ) 実開 昭61−44251（ＪＰ，Ｕ) 実開 昭64−21924（ＪＰ，Ｕ) 実公 昭45−9270（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B03C 3/00 - 3/88 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI B03C 3/70 B03C 3/70 Z (56) References JP-A-6-31203 (JP, A) JP, U) Actual development 61-44251 (JP, U) Actual development 64-21924 (JP, U) Actual public 45-9270 (JP, Y1) (58) Fields investigated (Int.Cl. 7 , DB name) B03C 3/00-3/88
Claims (2)
ダクトを形成する集塵電極と、同各小ダクトの中心に配
設された棒状の放電電極と、上記集塵電極の上方および
下方でかつ上記煙道ダクトの外面隅部において対向して
取付けられたサポート碍子支持箱と、上記各サポート碍
子支持箱の上面に配設されたサポート碍子と、上記各放
電電極の上方端が結合されかつ左右端が上記サポート碍
子を介して上方の上記サポート碍子支持箱に取付けられ
る上部支持枠と、上記各放電電極の下方端が結合されか
つ左右端が上記サポート碍子を介して下方の上記サポー
ト碍子支持箱に取付けられる下部支持枠とを有するダク
ト型湿式電気集塵装置において、上記サポート碍子支持
箱の先端面ａ近くの側面に結合された空気配管と、同サ
ポート碍子支持箱の上記サポート支持碍子近くの内面で
かつ上記サポート支持碍子と空気配管との間に設けられ
た整流手段とを備えてなることを特徴とするダクト型湿
式電気集塵装置。1. A dust collecting electrode for partitioning a cross section of a flue duct to form a plurality of small ducts, a rod-shaped discharge electrode arranged at the center of each small duct , and above and above the dust collecting electrode. a support insulator supporting box mounted beneath a and then Oite opposed to the outer surface corner portion of the flue duct, and support insulators which are disposed on the upper surface of each support insulator supporting box, the upper ends of the respective discharge electrodes Is connected and the left and right ends are connected to the upper support insulator support box above via the support insulator, the lower ends of the discharge electrodes are connected, and the left and right ends are below the support insulator. In a duct type wet electrostatic precipitator having a lower support frame attached to the support insulator support box, an air pipe connected to a side surface near a front end surface a of the support insulator support box and the support insulator support box of the support insulator support box. A duct type wet electrostatic precipitator, comprising: a rectifying means provided on an inner surface near the support supporting insulator and between the support supporting insulator and an air pipe.
ダクトを形成する集塵電極と、同各小ダクトの中心に配
設された棒状の放電電極と、上記集塵電極の上方および
下方でかつ上記煙道ダクトの外面隅部において対向して
取付けられたサポート碍子支持箱と、上記各サポート碍
子支持箱の上面に配設されたサポート碍子と、上記各放
電電極の上方端が結合されかつ左右端が上記サポート碍
子を介して上方の上記サポート碍子支持箱に取付けられ
る上部支持枠と、上記各放電電極の下方端が結合されか
つ左右端が上記サポート碍子を介して下方の上記サポー
ト碍子支持箱に取付けられる下部支持枠とを有するダク
ト型湿式電気集塵装置において、上記サポート碍子支持
箱内に設けられ上記サポート碍子には向かず上記サポー
ト碍子支持箱の内面下方に向けた噴口を持つノズルと、
同ノズルに結合された配管とを備えてなることを特徴と
するダクト型湿式電気集塵装置。2. A dust collecting electrode for partitioning a cross section of the flue duct to form a plurality of small ducts, a rod-shaped discharge electrode arranged at the center of each small duct , and above and above the dust collecting electrode. a support insulator supporting box mounted beneath a and then Oite opposed to the outer surface corner portion of the flue duct, and support insulators which are disposed on the upper surface of each support insulator supporting box, the upper ends of the respective discharge electrodes Is connected and the left and right ends are connected to the upper support insulator support box above via the support insulator, the lower ends of the discharge electrodes are connected, and the left and right ends are below the support insulator. A duct type wet electrostatic precipitator having a lower support frame attached to the support insulator support box, wherein the support insulator support box is provided inside the support insulator support box and does not face the support insulator. A nozzle with a downward facing jet,
A duct type wet electrostatic precipitator comprising a pipe connected to the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30107395A JP3495482B2 (en) | 1995-11-20 | 1995-11-20 | Duct type wet electric precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30107395A JP3495482B2 (en) | 1995-11-20 | 1995-11-20 | Duct type wet electric precipitator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09141126A JPH09141126A (en) | 1997-06-03 |
| JP3495482B2 true JP3495482B2 (en) | 2004-02-09 |
Family
ID=17892550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30107395A Expired - Fee Related JP3495482B2 (en) | 1995-11-20 | 1995-11-20 | Duct type wet electric precipitator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3495482B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4578301B2 (en) * | 2005-03-30 | 2010-11-10 | 中国電力株式会社 | Thermal power plant operation method |
| JP5384799B2 (en) * | 2007-03-30 | 2014-01-08 | 三菱重工メカトロシステムズ株式会社 | Exhaust gas treatment apparatus and exhaust gas treatment method |
| EP2954955B1 (en) * | 2013-02-07 | 2022-07-13 | Mitsubishi Heavy Industries Power Environmental Solutions, Ltd. | Dust collection apparatus, dust collection system, and dust collection method |
| CN104226478A (en) * | 2014-05-09 | 2014-12-24 | 中电投远达环保工程有限公司 | High-pressure insulation sealing device of wet type electrostatic dust remover |
| CN105817328A (en) * | 2016-04-28 | 2016-08-03 | 浙江天地环保工程有限公司 | Preposed electric discharge device of horizontal wet electrical dust precipitator |
| CN107149984B (en) * | 2017-06-15 | 2019-07-09 | 镇江市鑫泰绝缘材料有限公司 | A kind of electric precipitator insulated case |
| CN109647626A (en) * | 2019-01-04 | 2019-04-19 | 大唐环境产业集团股份有限公司 | A kind of novel insulator incubator |
| KR102277425B1 (en) * | 2020-11-05 | 2021-07-13 | 허만곤 | Insulator protection device for electric dust collector |
-
1995
- 1995-11-20 JP JP30107395A patent/JP3495482B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09141126A (en) | 1997-06-03 |
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