WO2008151507A1 - Moyens de distribution de gaz utilisés dans un séparateur de poussière électrostatique - Google Patents

Moyens de distribution de gaz utilisés dans un séparateur de poussière électrostatique Download PDF

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Publication number
WO2008151507A1
WO2008151507A1 PCT/CN2008/001060 CN2008001060W WO2008151507A1 WO 2008151507 A1 WO2008151507 A1 WO 2008151507A1 CN 2008001060 W CN2008001060 W CN 2008001060W WO 2008151507 A1 WO2008151507 A1 WO 2008151507A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric field
electrostatic precipitator
gas
wind
air
Prior art date
Application number
PCT/CN2008/001060
Other languages
English (en)
Chinese (zh)
Inventor
Ye Yuan
Original Assignee
Ye Yuan
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 Ye Yuan filed Critical Ye Yuan
Publication of WO2008151507A1 publication Critical patent/WO2008151507A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
    • B03C3/363—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located before the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
    • B03C3/365—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located after the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode has multiple serrated ends or parts

Definitions

  • the invention relates to a wind eliminator which is suitable for an electrostatic precipitator, which can quickly convert kinetic energy in a gas stream entering an electric eliminator into static pressure energy, in particular, can greatly reduce the dust concentration of the electric precipitator : The air blower.
  • the airflow velocity in the electrostatic precipitator is one of the key factors affecting the dust removal efficiency of the electrostatic precipitator. If the airflow velocity in the electric field is reduced from 1.4 m/s to 0.7 m/s, the efficiency of the electrostatic precipitator can be made. From 80% to over 98%, since the airflow speed is doubled, the size of the electrostatic precipitator is doubled, so that the equipment cost is doubled, and the airflow speed is sought to be reduced without increasing the size of the electrostatic precipitator.
  • the technological innovation program is of great significance, especially in China, which currently operates an electric precipitator with a cost of several hundred billion yuan; its dust concentration is above 100mg/m 3 , and its performance index is much higher than the national environmental protection requirements. 50 mg/m 3 , therefore, in order to accelerate the retrofitting of old electric dust removal, it is extremely necessary to seek to reduce the air flow speed without increasing the technical innovation of the electrostatic precipitator volume. Summary of the invention
  • the present invention provides a wind-eliminating device which can be added only one without changing the original basic structure of the electrostatic precipitator.
  • a simple air-dissipating device can quickly convert the gas flow energy into the electrostatic precipitator into a static pressure energy. Since the airflow in the electric field of the electrostatic precipitator is operated in a negative pressure, the airflow velocity [u 2 ] in the electric field is spaced from the exhaust vent [ r 2 ] square is inversely proportional. Therefore, the present invention provides an electric field of the air eliminator that can make the air flow speed much lower than the original designed air flow speed, and the air flow speed can be reduced to less than 20%.
  • the technical solution adopted by the present invention to solve the technical problem is: adding one or more installations in the gap between the air inlet and the electric field in the electrostatic precipitator case without changing the original basic structure of the electric precipitator
  • the air-dissipating device is composed of a horizontally arranged suspension of the airflow distribution plate, and the air-discharging device converts the gas flow energy entering the tank into static pressure energy, so that the airflow is stably and evenly entered into the dust-removing electric field, and the slow-flowing is the charged dust particles. Settling on the dust collecting anode plate creates extremely favorable conditions.
  • a wind-eliminating device is respectively installed between the third electric field and the fourth electric field to ensure the stability of the slow-flow through each electric field.
  • a windshield is arranged above the air-dissipating device to block the upper airflow of the two electric fields to ensure that the airflow passes through the dust-removing electric field.
  • the electrostatic precipitator with additional air-dissipating device can greatly reduce the number of electric field settings. With only one or two electric fields, the dust concentration can reach the national environmental protection requirement of 50 mg/m 3 or less, thus greatly reducing the manufacturing cost.
  • Figure 1 is a cross-sectional view showing the mounting structure of the embodiment of the electrostatic precipitator of the present invention
  • Figure 2 is a cross-sectional view of the longitudinal mounting structure of Figure 1.
  • FIG. 3 is a schematic structural view of an embodiment of a gas flow distribution plate made of a metal slat of the present invention.
  • Figure 4 is a cross-sectional view of the I-I of Figure 3 using V-shaped metal strips.
  • Figure 5 is a cross-sectional view of the I-I of the U-shaped metal strip of Figure 3.
  • Figure 6 is a schematic view showing the structure of an embodiment of a gas flow distribution plate made of a metal plate.
  • Figure 7 is a cross-sectional view taken along line I-I of Figure 6.
  • 1 is a wind-dissipating device composed of a gas-dissipating panel; 2. a gas distribution plate; 3. a gas distribution plate; 4. a dust collecting anode plate; 5. a corona cathode wire; 6. a wind inlet box; , ventilating box; 8, ash hopper; 9, fixed pin; 10, metal slats; 1.1., ventilation holes; 12, windshield;
  • the dust-containing airflow enters the air inlet box (6) is adjusted by the air distribution plate (3) in the air inlet box, and the dust-containing air stream is blown to the air distribution plate (2)
  • a dust collecting electric field composed of a combination of a corona cathode wire (5) and a dust collecting anode plate (4).
  • a wind-dissipating device (1) that is assembled by a suspension of airflow distribution plates is again attenuated to enter the second electric field.
  • the slow-flow gas in the middle is more stable.
  • a windshield (12) is arranged above the air-dissipating device to block the upper airflow of the two electric fields to ensure that the airflow passes through the dust-removing electric field.
  • the residual soot particles in the gas are removed in the second electric field of the electrostatic precipitator.
  • the dust-removed gas is cleaned and discharged from the exhaust box (7) via the air distribution plate (3).
  • Fig. 2 is a longitudinal cross-sectional view of Fig. 1, the dust-containing airflow enters the air inlet box (6) the dust-containing airflow is blown to the three air-dissipating devices (1) suspended by the airflow distribution plate, and the airflow speed is three.
  • the air eliminator (1) attenuates and absorbs, and its kinetic energy is converted into static pressure energy, so that the gas entering the electric field becomes a slow flow, and the alternating intervals of the electric field are arranged, by the corona cathode line (5) and the dust collecting anode plate ( 4) A combined dust collecting electric field.
  • the slow-flowing dust particles settled on the dust-collecting anode plate (4), creating a very favorable condition.
  • the two electric fields are A wind-dissipating device consisting of a combination of airflow and air-damping plates ; (1) attenuating again, making the slow-flowing gas entering the second electric field more stable, and at the same time, above the air-dissipating device: setting a windshield ( 12), the upper airflow of the two electric fields is blocked to ensure that the airflow passes through all the dust removal electric fields. The residual soot particles in the gas are removed in the second electric field of the electrostatic precipitator. Finally, the dust-removed gas is cleaned and discharged from the exhaust box (7) via the air distribution plate (3).
  • an air flow distribution plate (2) is prepared by fixing the metal strips (10) of the same shape by fixing pins (9) at equal intervals.
  • FIG. 4 is a cross-sectional view of Fig. 3 using a V-shaped metal strip, the same V-shaped metal strip (10) is fixed by a fixing pin (9) at an equal angle, and the air flow is eliminated.
  • Fig. 5 is a cross-sectional view of Fig. 3 using a U-shaped gold strip 1-1, the same U-shaped metal strip (10) is fixed by a fixing pin (9), and the equal spacing is fixed at a certain angle.
  • Fig. 6 a gas flow distribution plate (2) made of a metal plate is used. The vent hole (11) is distributed on the plate.
  • Fig. 7 is a cross-sectional view of II of Fig. 6, the air flow distribution by the metal plate.
  • the ventilating hole (11) is connected with a guide vane with a certain angle, and the guide vane attenuates and absorbs the flow energy of the dusty gas, so that the gas entering the electric field becomes a slow flow.

Landscapes

  • Electrostatic Separation (AREA)

Abstract

L'invention porte sur des moyens de distribution de gaz (1) utilisés dans un séparateur de poussière électrostatique. Le séparateur de poussière électrostatique comporte une boîte d'entrée de gaz (6) et une boîte de sortie de gaz (7) sur les deux extrémités respectives d'une chambre ; et une trémie (8) sous la chambre. Un champ électrique de collecte de poussière comprend des lignes cathodiques d'électricité (5) et des plaques anodiques de collecte de poussière (4) suspendues de façon alternée dans la chambre. Les moyens de distribution de gaz (1) comprennent une ou plusieurs plaques de distribution de gaz (2) suspendues de façon transversale et disposés entre l'entrée de gaz de la chambre et un champ électrique.
PCT/CN2008/001060 2007-06-08 2008-05-30 Moyens de distribution de gaz utilisés dans un séparateur de poussière électrostatique WO2008151507A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007100116192A CN101318160A (zh) 2007-06-08 2007-06-08 一种应用于电除尘器中的消风装置
CN200710011619.2 2007-06-08

Publications (1)

Publication Number Publication Date
WO2008151507A1 true WO2008151507A1 (fr) 2008-12-18

Family

ID=40129222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001060 WO2008151507A1 (fr) 2007-06-08 2008-05-30 Moyens de distribution de gaz utilisés dans un séparateur de poussière électrostatique

Country Status (2)

Country Link
CN (1) CN101318160A (fr)
WO (1) WO2008151507A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101670311B (zh) * 2009-09-29 2012-05-23 东北大学 一种逆气流粉尘荷电的双区多段静电除尘器
AU2010323407B2 (en) * 2009-11-26 2015-10-08 General Electric Technology Gmbh System and method for gas distribution measurement for electrostatic precipitator
CN101837322B (zh) * 2010-02-11 2013-07-10 金华大维电子科技有限公司 静电除尘器
CN102343308B (zh) * 2010-08-04 2013-10-16 袁野 组合式电除尘器
EP2433712A1 (fr) * 2010-09-27 2012-03-28 Alstom Technology Ltd Agencement de transition de conduite
CN102538402A (zh) * 2011-12-29 2012-07-04 宝鸡阜丰生物科技有限公司 一种谷氨酸钠烘干流化床
CN104069945B (zh) * 2014-06-05 2016-03-23 王建排 车载高效pm2.5颗粒截灭装置
CN105855047A (zh) * 2015-01-20 2016-08-17 袁野 电火花型除尘器
CN104841559B (zh) * 2015-05-12 2017-05-03 河北大学 箱式错位多孔除尘极板及使用箱式错位多孔除尘极板的静电除尘器
CN106111341A (zh) * 2016-08-31 2016-11-16 贵阳铝镁设计研究院有限公司 卧式无旁路电除尘器及其方法
CN109731685A (zh) * 2018-12-25 2019-05-10 袁野 一种应用于电除尘器末端的结露式净化系统
CN109746121A (zh) * 2018-12-25 2019-05-14 袁野 一种应用于电除尘器末端的收尘净化装置系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85101306A (zh) * 1985-04-01 1987-01-10 三菱重工业株式会社 二级静电除尘器
US5156658A (en) * 1991-05-01 1992-10-20 Research-Cottrell, Inc. Electrostatic precipitator gas inlet plenum having a corrugated perforated plate
JP2001232239A (ja) * 2000-02-25 2001-08-28 Mitsubishi Heavy Ind Ltd 電気集塵装置
JP2001232235A (ja) * 2000-02-25 2001-08-28 Mitsubishi Heavy Ind Ltd 電気集塵装置
CN1444510A (zh) * 2000-06-06 2003-09-24 沃斯特-阿尔派因工业设备制造股份有限公司 静电除尘器
CN1812841A (zh) * 2003-06-24 2006-08-02 阿尔斯托姆科技有限公司 清洁电过滤器的方法和电过滤器
CN2813105Y (zh) * 2005-09-09 2006-09-06 王澍 一种电除尘器的阻流加导流型气流分布装置
CN2827538Y (zh) * 2005-09-29 2006-10-18 宝山钢铁股份有限公司 气流调节装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85101306A (zh) * 1985-04-01 1987-01-10 三菱重工业株式会社 二级静电除尘器
US5156658A (en) * 1991-05-01 1992-10-20 Research-Cottrell, Inc. Electrostatic precipitator gas inlet plenum having a corrugated perforated plate
JP2001232239A (ja) * 2000-02-25 2001-08-28 Mitsubishi Heavy Ind Ltd 電気集塵装置
JP2001232235A (ja) * 2000-02-25 2001-08-28 Mitsubishi Heavy Ind Ltd 電気集塵装置
CN1444510A (zh) * 2000-06-06 2003-09-24 沃斯特-阿尔派因工业设备制造股份有限公司 静电除尘器
CN1812841A (zh) * 2003-06-24 2006-08-02 阿尔斯托姆科技有限公司 清洁电过滤器的方法和电过滤器
CN2813105Y (zh) * 2005-09-09 2006-09-06 王澍 一种电除尘器的阻流加导流型气流分布装置
CN2827538Y (zh) * 2005-09-29 2006-10-18 宝山钢铁股份有限公司 气流调节装置

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