WO2007016872A1 - Dispositif de precipitation electrostatique presentant une efficacite elevee - Google Patents

Dispositif de precipitation electrostatique presentant une efficacite elevee Download PDF

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Publication number
WO2007016872A1
WO2007016872A1 PCT/CN2006/002010 CN2006002010W WO2007016872A1 WO 2007016872 A1 WO2007016872 A1 WO 2007016872A1 CN 2006002010 W CN2006002010 W CN 2006002010W WO 2007016872 A1 WO2007016872 A1 WO 2007016872A1
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WO
WIPO (PCT)
Prior art keywords
dust collecting
air
electrostatic precipitator
corona discharge
discharge electrode
Prior art date
Application number
PCT/CN2006/002010
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English (en)
French (fr)
Inventor
Lieshui Jin
Ye Yuan
Original Assignee
Lieshui Jin
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 Lieshui Jin, Ye Yuan filed Critical Lieshui Jin
Priority to US11/990,180 priority Critical patent/US7901489B2/en
Priority to EP06775328A priority patent/EP1946845A4/en
Publication of WO2007016872A1 publication Critical patent/WO2007016872A1/zh

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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
    • B03C3/09—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces at right angles 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
    • B03C3/02—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
    • B03C3/366—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located in the filter, e.g. special shape of the electrodes
    • 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
    • B03C3/74—Cleaning the electrodes
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact

Definitions

  • the present invention relates to an electrostatic precipitator for removing soot particles from the industry, and more particularly to a high efficiency electrostatic precipitator capable of removing submicron soot particles. Background technique
  • a known electrostatic precipitator is provided with a plurality of settling channels formed by a corona discharge electrode line and a dust collecting plate in a dust box, and a DC negative high voltage electric power is applied to the corona discharge electrode line.
  • Release negative ions for dust particles in the charged dust-containing gas stream apply DC positive high-voltage electricity on the dust collecting plate, collect the charged negative soot particles, and then use the vibrating device to vibrate
  • the method of shooting removes the soot collected on the dust collecting plate into the ash hopper at the lower part of the dust removing device, thereby achieving the purpose of removing the dust particles in the airflow.
  • this type of dust removal device has a very poor effect on the removal of submicron soot particles in the dusty air stream.
  • the coring is cleaned, there will always be a part of the soot, and the secondary fly ash caused by the rapping is discharged with the air flow.
  • the efficiency of the precipitator is unstable, and the concentration of soot in the exhaust gas remains high.
  • the technical problem to be solved by the present invention is to provide a high-efficiency electrostatic precipitator capable of effectively removing submicron-sized soot particles in view of the above-mentioned deficiencies in the prior art.
  • the technical solution adopted for solving the technical problem of the present invention is that the high-efficiency electrostatic precipitator comprises a box body, and the air inlet box and the air exhaust box are respectively arranged at two ends of the box body, and the ash bucket is arranged at the lower part of the box body, and the box body is alternately arranged in parallel.
  • a plurality of settling channels formed by a combination of a corona discharge electrode wire and a dust collecting plate are arranged, and a corona discharge device, a corona discharge electrode line and a high voltage DC voltage are respectively arranged on the corona discharge electrode line and the dust collecting plate.
  • the negative end of the output is electrically connected, and the dust collecting plate is electrically connected to the positive end of the high voltage direct current output and grounded, wherein a wind deflector is alternately arranged at each end of each adjacent two settling channels to form a plurality of alternating air inlets arranged alternately.
  • the passage and the air discharge settlement channel, the wind deflector is arranged at the air outlet end for the air inlet and the sinking passage, and the wind shield is disposed at the air inlet end for the air discharge settlement channel, and the dust collecting plate is provided with a plurality of ventilation holes.
  • the venting holes may be holes uniformly distributed on the dust collecting plate.
  • the venting hole on the dust collecting plate may be an elongated hole having a width of 20-50 mm and a length of 100-800 mm; the vent hole may also be a small elliptical hole, and the long axis diameter is 20-50, and the short axis diameter It is 20-30mm.
  • the wind deflecting plates are arranged alternately in each settling channel to form an air inlet settling channel and an exhaust air settling channel arranged between the phases, forcing the small soot particles moving in the air settling channel to pass through the dust collecting plate.
  • the electrostatic dust removing device of the prior art often needs to provide a plurality of dust collecting electric fields in order to improve the dust removing effect, and in the present invention, since the dust removing efficiency is high, It is only necessary to set a vacuum electric field to achieve the effect of multiple vacuuming electric fields in the prior art.
  • the amount of air sent in the air inlet box is usually 0. 7-1. 2m / s
  • the dust removal efficiency of the dust removal device is not improved, but the air intake is too large, but will affect Dust removal efficiency; and the device of the invention increases the air intake amount, due to the distribution principle, The speed of the soot particles entering the respective vent holes is not particularly increased, so that the wind speed can be effectively increased, thereby also improving the working efficiency of the dust removing device.
  • a valve for closing the outlet end is installed at an air outlet of each of the exhaust air deposition passages.
  • the automatic control system to control the switch of the valve, since the corona discharge electrode line and the dust collecting plate are provided with a clearing rapping device, and the opening and closing of each valve and the cleaning vibration on each exhaust air discharging passage.
  • the valve can be closed, and then the dusting device in the settling channel is activated under the windless condition, and the attached dust is attached.
  • a plurality of settling channels arranged in parallel in the longitudinal direction of the casing constitute a vacuuming electric field, and two or more vacuuming electric fields can be disposed in the lateral direction of the dust removing box.
  • a valve that can close the tuyere end is provided at the air outlet of the exhaust air deposition passage of the last vacuum electric field.
  • a control device for synchronizing the closing action of the valve with the rapping action of the cleaning device in the settling channel is provided at the air outlet of the exhaust air deposition passage of the last vacuum electric field.
  • the volume of the invention can be reduced by more than 1/3, thereby greatly reducing the cost of the electrostatic precipitator.
  • DRAWINGS 1 is a circuit schematic diagram of an electrostatic precipitator of the present invention
  • Figure 2 is a transverse cross-sectional view of Embodiment 1 of the high efficiency electrostatic precipitator of the present invention.
  • Figure 3 is a cross-sectional view of A-A of Figure 2.
  • Figure 4 is a transverse sectional view of Embodiment 2 of the present invention.
  • Figure 5 is a transverse sectional view of Embodiment 3 of the present invention.
  • Figure 6 is a schematic view showing the structure of the vent hole 13 in the dust collecting plate 2 of the present invention.
  • Figure 7 is a transverse sectional view of the embodiment 4 of the present invention.
  • FIG. 8 is a schematic structural view of the vent hole 13 on the dust collecting plate 2 in the fourth embodiment of the present invention.
  • FIG. 9 is a schematic structural view of the corona discharge electrode plate 15 in the fourth embodiment of the present invention.
  • FIG. 10 is a cross-sectional view of the B-B in FIG.
  • the negative terminal of the output voltage of the DC voltage source is electrically connected to the corona discharge electrode line 1
  • the positive terminal of the output voltage is electrically connected to the dust collecting plate 2 and grounded.
  • the electrostatic precipitator of the present invention includes a dust removing box body 6, and the air inlet box 7 and the air exhaust box 8 are respectively installed at both ends of the dust box body 6.
  • An air flow distribution plate 9 is provided in the air inlet box 7 for guiding the airflow into the interior of the cabinet.
  • a plurality of settling channels formed by combining the corona discharge electrode line 1 and the dust collecting plate 2 are mounted in parallel. At each of the two adjacent settling channels, the settling channels are alternately combined by the wind deflector 3 into a plurality of inlet settling channels 4 and an exhaust settling channel 5.
  • the outlet end of each exhaust venting passage 4 corresponds to the valve 10 installed in the ventilating tank 8, and the valve 10 will be described below.
  • the corona discharge electrode line 1 and the dust collecting plate 2 are respectively provided with a cleaning vibration
  • the device 12 is further provided with a ash hopper 11 for receiving dust in the lower portion of the dust box 6.
  • a plurality of vent holes 13 are provided in the dust collecting plate 2. As shown in FIG. 6, the air venting holes 13 are arranged at equal intervals on the metal plate. In the embodiment, the venting holes 13 are small oval holes uniformly distributed on the dust collecting plate 2, and the length of the holes is 50 ⁇ . The short shaft diameter is 30 legs.
  • the present dust collecting plate 2 is used in both the second embodiment and the third embodiment.
  • each exhaust air deposition passage 4 is connected with a valve 10 for closing the air outlet end, and the valve 10 is installed in the air exhaust box 8.
  • An automatic control system is also installed in the dust box 6 for controlling the opening and closing of the valve 10.
  • the automatic control system simultaneously controls the opening and closing of the cleaning device 12 so that the action process is synchronized with the opening and closing of the valve 10.
  • the rapping process in each settling channel is set to be performed in turn.
  • the working process of the present invention is as follows: After the high-efficiency electrostatic precipitator of the present invention is ventilated and energized, the dust-containing airflow enters each of the air inlet and settling channels 4 through the air inlet box 7, and the corona discharge electrode line 1 releases a large amount of negative ions to make the airflow
  • the soot particles are charged, and the charged soot particles are adsorbed by the dust collecting plate 2 as the airflow passes through the vent holes 13 on the collector plate 2, and settle on the collector plate 2; after removing some of the soot particles
  • the airflow then enters the exhaust deposition channel 5, and the remaining part of the soot particles in the airflow are again adsorbed by the corona discharge electrode line 1 and the dust collecting plate 2 in the exhaust air deposition channel 5, and the cleaned air flow is finally opened.
  • the valve 10 is discharged from the exhaust box 8.
  • this embodiment differs from Embodiment 1 in that it is parallel in the longitudinal direction.
  • two such suction electric fields that is, a first electric field and a second electric field are disposed in the dust removing box 6 in the lateral direction.
  • Each of the vacuuming electric fields is provided with a plurality of inlet air deposition channels 4 and an exhaust air deposition channel 5 which are combined by the corona discharge electrode line 1 and the dust collecting plate 2 and the wind shield 3.
  • the valve 10 is disposed only in the air discharge box 8 at the air outlet end of the second electric field.
  • the cleaning and slamming device 12 in the first electric field is controlled by the automatic control system to perform the cleaning and swaying at any time, and the cleaning device in the second electric field is required to automatically control the system to turn off the end of each of the exhausting and condensing channels 5 After the valve 10, the cleaning operation in the channel is performed.
  • Example 3 is the same as those in Embodiment 1, and will not be described again.
  • this embodiment differs from the second embodiment in that no valve is installed at the outlet end of the second electric field, and the cleaning process of the ashing is performed in an ordinary manner.
  • This device is mainly used in applications where dust removal requirements are not high.
  • This embodiment can be applied to the electrostatic precipitator modification in the prior art.
  • Embodiment 4 As shown in Fig. 7, in this embodiment, a plurality of settling channels formed by the corona discharge plate 15 and the dust collecting plate 2 are arranged in the casing 6.
  • the wind deflector 3 alternately combines the respective settling channels into a plurality of inlet air settling channels 4 and an exhaust air settling channel 5, and each of the air outlets of the exhaust air settling channels 4 corresponds to the air exhaust box 8 Valve 10 installed in
  • FIG. 8 is the embodiment of the dust collecting plate of FIG. 6, the equidistant, equal-half venting holes are arranged on the metal plate, the aperture is 40, and the center of each venting hole is
  • the discharge electrode tip 14 mounted on the corona discharge electrode plate 15 shown in Fig. 9 corresponds to each other.
  • FIG. 9 Shown in FIG. 9 is a novel corona discharge electrode plate 15 of the present embodiment, which is mounted equidistantly on a metal plate with small holes and is provided with an equal length of the electrode tip 14, gold The plate is equivalent to the corona discharge electrode line, and the corona discharge electrode plate 15 is formed. The small hole on the corona discharge electrode plate 15 is disposed between the discharge electrode tip 14 on the corona discharge electrode line.
  • Fig. 10 Shown in Fig. 10 is a cross-sectional view taken along line B-B of Fig. 9, which is an equidistant array of discharge electrode tips 14 mounted on a metal plate with vent holes.

Description

一种高效率静电除尘器 技术领域
本发明涉及一种用于清除工业中烟尘粒子的静电除尘装置， 尤 其涉及一种能清除亚微米级烟尘微粒的高效率静电除尘器。 背景技术
目前公知的静电除尘装置， 是在除尘箱体中安装有电暈放电极 线与集尘极板配合组成的多条沉降通道，在电晕放电极线上施加直流 负极性高压电，使其释放负电离子，用于荷电含尘气流中的烟尘粒子， 在集尘极板上施加直流正极性高压电，用于收集荷电后的负极性烟尘 粒子，然后， 由振打装置采用振打方式将集尘极板上收集的烟尘震落 于除尘装置下部的灰斗中， 从而达到清除气流中烟尘粒子的目的。
但是， 这类除尘装置对含尘气流中亚微米级烟尘微粒的清除效 果极差， 此外就是在振打清灰时， 总会有一部分烟尘， 由于振打引起 的二次飞灰， 随气流排出， 致使除尘器的效率不稳定，排出气体的烟 尘浓度含量居高不下。
国家标准规定， 根据当前最先进的除尘技术， 将工业粉尘排放 浓度控制在 50mg/m3， 可是， 此标准对真正危害人类健康的微米级粉 尘的排放控制却没有任何限制作用。 目前，中国每年大约有 800多万 吨微米级气容胶粉尘排放于大气中， 由于微米级气容胶微粒很难沉 降， 累积后使大气污染形势越发严重。 根据我国目前大气环保现状, 要想有效清除现有大气中的有害物质，基本还原蓝天，各工矿企业排 出气体中微米级气容胶的浓度要控制在 lmg/m3以下， 而目前市面上 的除尘装置对工业粉尘排出的微米级气容胶微粒根本无法清除。 发明内容
本发明所要解决的技术问题是针对现有技术中所存在的上述不 足，提供一种能够对亚微米级的烟尘微粒予以有效清除的高效率静电 除尘器。 解决本发明技术问题所采用的技术方案是该高效率静电除尘器 包括箱体，箱体两端分别设有进风箱和排风箱，在箱体下部设有灰斗， 箱体中平行交替排列安装有电晕放电极线和集尘极板组合而成的多 条沉降通道， 电晕放电极线和集尘极板上分别设有清灰振打装置， 电 暈放电极线与高压直流电压输出的负极端电连接，集尘极板与高压直 流电输出的正极端电连接并接地，其中，每相邻两沉降通道的两端交 错设置有挡风板， 形成交替排列的多条进风沉降通道和排风沉降通 道，挡风板设于出风口端的为进风沉降通道，挡风板设于进风口端的 为排风沉降通道， 集尘极板上布有多个通风孔。
优选的是， 所述通风孔可为均布于集尘极板上的孔洞。
所述集尘板上的通风孔可为长条形孔， 其孔径宽 20- 50mm， 长 100-800mm; 通风孔也可为小椭圆孔， 其长轴径为 20- 50讓， 短轴径 为 20-30mm。
现有技术中的静电除尘装置， 由于亚微米级小烟尘微粒的尺寸 越小吸附力越小，不容易为集尘极板所吸附，往往随着气流进入除尘 装置后又原样流出，而本发明静电除尘器中通过在各沉降通道交错设 置挡风板， 形成相间排列的进风沉降通道和排风沉降通道，迫使进风 沉降通道中随气流运动的小烟尘微粒穿过集尘极板上的通风孔进入 相邻的排风沉降通道中，亚微米级小烟尘微粒近距离穿过集尘极板上 的通风孔时， 其运动方向发生了变化， 由横向运动变成纵向运动， 即 向靠近集尘极板的方向运动，根据库仑定理可知，微粒与集尘极板之 间的距离越近，集尘极板对微粒的吸附力越大，微米级小烟尘微粒能 够很容易地在集尘极板的通风孔处近距离被捕获。
如果将沿纵向平行排列的多个沉降通道称为一个吸尘电场的 话，现有技术中的静电除尘装置为了提高除尘效果，往往需要设置多 个吸尘电场，而本发明中由于除尘效率高，只需要设置一个吸尘电场 就能达到现有技术中多个吸尘电场的效果。
另外， 现有技术中进风箱中送入的进风量通常为 0. 7-1. 2m/s, 加大进风量后， 除尘装置的除尘效率不但得不到提高，进风量过大反 而会影响除尘效率； 而本发明装置在加大进风量后， 由于分配原理， 进入各个通风孔中的烟尘微粒的速度并不会提高得特别多，因此能有 效地提高风速， 从而也提高了除尘装置的工作效率。
优选的是， 所述各排风沉降通道的出风口处安装有可封闭出风 口端的阀门。通过设置自动控制系统对阀门的开关进行操控， 由于电 暈放电极线和集尘极板上都设有清灰振打装置，且各阀门的开闭与各 排风沉降通道上的清灰振打装置同步动作，当各电晕放电极线和集尘 极板上吸附的灰尘达到一定数量，可关闭阀门，然后在无风条件下启 动该沉降通道内的清灰振打装置，附着的灰尘在振动下落入箱体下部 的灰斗中， 由于沉降通道是封闭的， 因此振打引起的二次飞灰不会随 气流排出，待沉降通道内的灰尘全部落入灰斗后，再依次关闭下一个 排风沉降通道内的阀门， 如此反复进行。
为了进一步提高除尘效率， 本发明中， 箱体内沿纵向平行排列 的多个沉降通道构成一个吸尘电场，除尘箱体内可沿横向剖面方向设 置有两个或两个以上的吸尘电场。
当箱体内设置有两个或两个以上的吸尘电场时， 在最后一个吸 尘电场的排风沉降通道的出风口处设置有可封闭出风口端的阀门。并 有对阀门的闭合动作与各该沉降通道内的清灰振打装置的振打动作 同步进行的控制装置。
本发明的有益效果是：
1、 可以高效率收集亚微米级的烟尘微粒， 并且可提高对高比电 阻的烟尘粒子的捕集能力；
2、杜绝二次扬尘随气流排出，大幅度降低排出气流的含尘浓度， 从而使静电除尘器具有稳定的高效率；
3、 可以提高进风的风速， 从而提高除尘的工作效率；
4、 比照现有市场上同规格的静电除尘器， 本发明体积可以縮小 1/3以上， 从而大幅度降低了静电除尘器造价。
本发明适用于各种类型的静电除尘器以及袋式除尘器， 广泛应 用于冶金、 水泥、 电厂以及化工等行业。 附图说明 图 1 是本发明静电除尘器的电路原理图
图 2 是本发明高效率静电除尘器实施例 1的横向剖面图 图 3 是图 2中 A- A的剖视图
图 4 是本发明实施例 2的横向剖面图
图 5 是本发明实施例 3的横向剖面图
图 6 是本发明中集尘极板 2上通风孔 13的结构示意图 图 7 是本发明实施例 4的横向剖面图
8 是本发明实施例 4中集尘极板 2上通风孔 13的结构示意 m 图 9 是本发明实施例 4中电晕放电极板 15的结构示意图 图 10 是图 9中 B- B的剖视图
图中： 1一电晕放电极线 2—集尘极板 3—挡风板 4—进风 沉降通道 5—排风沉降通道 6—箱体 7—进风箱 8—排风箱 9一气流分布板 10—阀门 11一灰斗 12—清灰振打装置 13— 通风孔 14一放电极尖 15—电晕放电极板 具体实施方式
在图 1 中， 直流髙压电源输出电压的负极端与电暈放电极线 1 电连接， 输出电压的正极端与集尘极板 2电连接并接地。
以下结合实施例及附图， 对本发明做进一步详细叙述。 以下实 施例为本发明的非限定性实施例。
实施例 1 :
本实施例中， 如图 2所示， 本发明静电除尘器包括除尘箱体 6， 除尘箱体 6的两端分别安装有进风箱 7和排风箱 8。在进风箱 7中设 有气流分布板 9， 用于引导气流进入箱体内部。 在除尘箱体 6中， 平 行安装有多条由电晕放电极线 1和集尘极板 2组合而成的沉降通道。 在每相邻的两沉降通道两端，分别用挡风板 3交替将沉降通道组合成 多条进风沉降通道 4和排风沉降通道 5。每条排风沉降通道 4的出风 口端都对应排风箱 8中安装的阀门 10，阀门 10将在下文中进行介绍。
如图 3所示， 电晕放电极线 1和集尘极板 2上分别设有清灰振 打装置 12， 在除尘箱体 6下部还设有接收灰尘的灰斗 11。
在集尘极板 2上布有许多个通风孔 13。 如图 6所示， 它是在金 属板上等间距排列着通风孔 13， 本实施例中通风孔 13为均布于集尘 极板 2上的小椭圆孔， 其孔长轴径为 50匪、 短轴径为 30腿。 以下的 实施例 2和实施例 3中都使用本新型集尘极板 2。
如图 2所示， 每条排风沉降通道 4的出风口端都对应连接有一 个可封闭出风口端的阀门 10， 阀门 10安装于排风箱 8中。 除尘箱体 6内还安装有自动控制系统用于控制阀门 10的开与关， 自动控制系 统同时对清灰振打装置 12的启闭进行控制，使其动作过程与阀门 10 的开闭同步。 各沉降通道内的振打过程设置为依次轮流进行。
本发明的工作过程如下： 将本发明高效率静电除尘器通风通电 后， 含尘气流经进风箱 7分别进入各条进风沉降通道 4， 电晕放电极 线 1释放出大量负电离子，使气流中的烟尘粒子荷电，荷电后的烟尘 粒子随气流通过集电极板 2上的通风孔 13时，被集尘极板 2所吸附， 沉降在集电极板 2上；清除了部分烟尘粒子后的气流随即进入排风沉 降通道 5中，气流中剩余的部分烟尘粒子再次为排风沉降通道 5内的 电暈放电极线 1和集尘极板 2所吸附，清洁后的气流最后再经打开的 阀门 10从排风箱 8中排出。
当某一条排风沉降通道 5内的集尘极板 2上吸附的烟尘达到一 定厚度时， 该条沉降通道的阀门 10会被自动控制系统所关闭， 此时 该条沉降通道中无气流通过。同时， 自动控制系统分别起动该条排风 沉降通道及其相邻的进风沉降通道中的电晕放电极线 1和集尘极板 2 上的清灰振打装置 12进行清灰操作， 当清灰振打结束后， 自动控制 系统会打开该阀门 10， 使该条沉降通道恢复正常除尘工作。 然后自 动控制系统轮流依次关闭下一条排风沉降通道阀门，进行下一条沉降 通道振打清灰工作。如此轮流将每条沉降通道依次进行清灰，循环往 复。 实施例 2 :
如图 4所示， 本实施例与实施例 1不同的是， 如果沿纵向平行 排列的多个沉降通道称为一个吸尘电场的话，本实施例中除尘箱体 6 内沿横向设置有两个这样的吸尘电场， 即第一电场和第二电场。每个 吸尘电场都安装有由电晕放电极线 1和集尘极板 2以及挡风板 3共同 组合的多条进风沉降通道 4和排风沉降通道 5
本实施例中， 阀门 10仅设置于第二电场的出风口端的排风箱 8 内。 第一电场中的清灰振打装置 12由自动控制系统进行操控随时进 行清灰振打，而第二电场中的清灰振打装置需自动控制系统轮流关闭 每条排风沉降通道 5末端的阀门 10后， 再进行该通道内的清灰振打 工作。 '
本实施例中其他的结构与实施例 1相同， 不再进行赘述。 实施例 3:
如图 5所示， 本实施例与实施例 2不同的是在第二电场的出风 口端没有安装阀门，清灰振打过程采用普通方式完成。该装置主要应 用于除尘要求不高的场合。本实施例子可以应用于现有技术中的静电 除尘器改造。 实施例 4: 如图 7所示， 本实施例中， 是在箱体 6内排列安装着电晕放电 极板 15和集尘极板 2共同组成的多条沉降通道。在沉降通道的两端， 挡风板 3分别将各沉降通道交替组合成多条进风沉降通道 4和排风沉 降通道 5，每条排风沉降通道 4的出风口端都对应排风箱 8中安装的 阀门 10
图 8中所示的是本实施例在图 6中的集尘极板基础上， 在金属 板上排列着等距离、 等半经的通风孔， 孔径为 40 并且每个通风 孔的中心都与图 9 中所示的电晕放电极板 15上安装的放电极尖 14 相对应。
在图 9中所示的是本实施例中的新型电暈放电极板 15， 它是在 带有小孔的金属板上等距离的排列安装有等长度的放电极尖 14， 金 属板相当于电晕放电极线， 形成电晕放电极板 15， 电晕放电极板 15 上的小孔与电晕放电极线上的放电极尖 14相间设置。
在图 10中所示的是图 9的 B-B剖视图， 它是在带有通风孔的金 属板上等距离的排列安装有等长度的放电极尖 14。

Claims

杈利要求书
1. 一种高效率静电除尘器， 包括箱体 （6) ， 在箱体两端分别 设有进风箱 （7) 和排风箱 （8) ， 在箱体下部设有灰斗 （11) ， 箱体 中平行交替排列安装有电暈放电极线（1)和集尘极板（2)组合而成 的多条沉降通道，电晕放电极线和集尘极板上分别设有清灰振打装置
(12)， 电暈放电极线与高压直流电压输出的负极端电连接， 集尘极 板与高压直流电输出的正极端电连接并接地， 其特征在于箱体中平 行交替排列的多条沉降通道由电晕放电极线 （1) 和布有多个通风 孔的集尘极板（2)组合而成， 每相邻两 降通道的两端交错设置有 挡风板 （3) ， 形成交替排列的多条进风沉降通道和排风沉降通道， 挡风板设于出风口端的为进风沉降通道 （4) ， 挡风板设于进风口端 的为排风沉降通道 （5) 。
2. 根据权利要求 1所述的高效率静电除尘器， 其特征在于所述 通风孔 （13) 为均布于集尘极板上的孔洞。
3. 根据权利要求 2所述的高效率静电除尘器， 其特征在于所述 通风孔为长条形孔， 其孔径宽 20_50mm， 长 100- 800mm; 或通风孔为 小椭圆孔， 其长轴径为 20- 50匪， 短轴径为 20- 30腿。
4. 根据权利要求 1一 3之一所述的高效率静电除尘器， 其特征 在于所述各排风沉降通道的出风口处安装有可封闭出风口端的阀门
(10) ， 有对阀门的闭合动作与该沉降通道内的清灰振打装置 （12) 的振打动作同步进行的自动控制装置。
5. 根据权利要求 1一 3之一所述的高效率静电除尘器， 其特征 在于箱体内沿纵向平行排列的多个沉降通道构成一个吸尘电场，箱体 沿横向剖面方向设置有两个或两个以上的吸尘电场。
6. 根据权利要求 5所述的高效率静电除尘器， 其特征在于当箱 体内设置有两个或两个以上的吸尘电场时，最后一个吸尘电场的排风 沉降通道的出风口处设置有可封闭出风口端的阀门 （10 )， 有对阀门 的闭合动作与各该沉降通道内的清灰振打装置（12)的振打动作同步 进行的自动控制装置。
PCT/CN2006/002010 2005-08-10 2006-08-09 Dispositif de precipitation electrostatique presentant une efficacite elevee WO2007016872A1 (fr)

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CN107597434B (zh) * 2017-09-26 2024-03-08 江苏菲特滤料有限公司 一种工业除尘设备
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CN117399174A (zh) * 2023-12-13 2024-01-16 星远智维邯郸环境科技有限公司 一种高炉煤气燃烧废烟气协同净化装置及处理方法
CN117399174B (zh) * 2023-12-13 2024-02-27 星远智维邯郸环境科技有限公司 一种高炉煤气燃烧废烟气协同净化装置及处理方法

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US7901489B2 (en) 2011-03-08
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EP1946845A4 (en) 2011-06-01
US20100166905A1 (en) 2010-07-01
US8057213B2 (en) 2011-11-15
CN1911526A (zh) 2007-02-14
US20100154642A1 (en) 2010-06-24

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