CN1911526B - 一种高效率静电除尘器 - Google Patents

一种高效率静电除尘器 Download PDF

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CN1911526B
CN1911526B CN2005100178749A CN200510017874A CN1911526B CN 1911526 B CN1911526 B CN 1911526B CN 2005100178749 A CN2005100178749 A CN 2005100178749A CN 200510017874 A CN200510017874 A CN 200510017874A CN 1911526 B CN1911526 B CN 1911526B
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金烈水
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Beijing State Environmental Protection Technology Co., Ltd.
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02Plant or installations having external electricity supply
    • B03C3/04Plant or installations having external electricity supply dry type
    • B03C3/09Plant 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02Plant or installations having external electricity supply
    • B03C3/04Plant or installations having external electricity supply dry type
    • B03C3/08Plant 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34Constructional details or accessories or operation thereof
    • B03C3/36Controlling flow of gases or vapour
    • B03C3/361Controlling flow of gases or vapour by static mechanical means, e.g. deflector
    • B03C3/366Controlling flow of gases or vapour by static mechanical means, e.g. deflector located in the filter, e.g. special shape of the electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34Constructional details or accessories or operation thereof
    • B03C3/74Cleaning the electrodes
    • B03C3/76Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact

Abstract

一种高效率静电除尘器,它是采用了新型的集尘极板和电晕放电极线与堵风板配合组合成进风沉降通道和排风沉降通道,迫使荷电后的烟尘粒子随气流通过集电极板上的空隙,使带有正极性的集电极板近距离将其吸附,因此,对亚微米级烟尘微粒,有较强的捕集能力,并对高比电阻烟尘粒子也有较好清除作用。又由于振打清灰,是采用离线式循环方式轮流进行每一条沉降通道的清灰操作,因此,杜绝了二次扬尘进入气流中排出的可能,确保了静电除尘器的稳定高效率,并且静电除尘器的风速可以倍增,因此,使处理烟气流量的能力大幅度提高,从而可以缩小静电除尘器的体积,并缩减除尘器造价成本。

Description

一种高效率静电除尘器
[0001] 所属领域
[0002] 本发明所涉及一种用于清除工业烟尘粒子的静电除尘装置,尤其是能高效率清除 亚微米级烟尘微粒的静电除尘器。
背景技术
[0003] 目前,公知的静电除尘装置,是在除尘箱体中安装有电晕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,用振打方式将集尘极板上收集的烟尘震落于下部的灰斗中,从而达 到清除气流中的烟尘粒子的目的。
[0004] 但是,这类除尘装置对含尘气流中的亚微米级的烟尘微粒的清除效果极差,尤其 是振打清灰时,总会有一部分,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,使排出气体的浓度含量居高不下。
发明内容
[0005] 为了克服现有的静电除尘装置的除尘效率低,排出气体的浓度含量高等不足,本 发明提供一种高效率静电除尘器,该静电除尘器,不仅能对亚微米级的烟尘微粒予以有效 清除,尤其能杜绝由于振打消灰时所引起的二次扬尘随气流排出等缺点,从而确保静电除 尘器稳定的高效率。
[0006] 技术方案
[0007] 1、制作一种布满通风孔的新型集尘极板。
[0008] 2、采用档风板将沉降通道组合成多条进风沉降通道和排风沉降通道。
[0009] 3、在排风箱中对应每条排风沉降通道都安装有阀门,该阀门的开与关,由自动控 制装置使与其对应的沉降通道振打装置同步操作,自动控制装置使各条沉降通道分别轮流 的在无风条件下进行清灰振打操作。
[0010] 具体方案:在除尘箱体两端分别设有进风箱和排风箱,在除尘箱体下部设有灰斗, 在除尘箱里,平行于气流方向,将电晕放电极线与布满通风孔的新型集尘极板平行交替等 距离的组合成多条沉降通道,在沉降通道的两端,用档风板将沉降通道分别组合成交替排 列的进风沉降通道和扫讽沉降通道,将每条沉降通道上的电晕放电极线和集尘极板都分别 安装振打装置,将直流高压电负板端与电晕放电极线电连接,将直流高压电的正极端与新 型集尘极板电连接并接地。
[0011 ] 在排风箱内,对应着每条排风沉降通道口,都连接安装有阀门,每个阀门的开与 关,都由自动控制系统将其与所对应的沉降通道振打清灰装置同步操作,各条沉降通道清 灰振打,由自动控制系统分别轮流进行操作。
[0012] 通风通电后,含尘气流经进风箱分别进入各条进风沉降通道,电晕放电极释放出 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的通风孔时,被集尘极板所吸附,沉降在集电极板上,清洁后的气流进入排风沉降通道,再经打开 的阀门从排风箱排出。当某一条沉降通道的集尘极板吸附的烟尘达到一定厚度时,该条沉 降通道的阀门会被自动控制系统所关闭,使该条沉降通道中无气流通过,同时,自动控制系 统分别起动电晕放电极和集尘极板的清灰振打装置,进行清灰操作,当清灰振打束后,自动 控制系统会打开该阀门,使该条沉降通道恢复正常除尘工作。自动控制系统会轮流依次关 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。
[0013] 本发明的有益效果是:
[0014] 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捕集 能力。
[0015] 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。
[0016] 3、可以成倍提高风速,比照同规格静电除尘器,体积可以缩小1/3以上,从而大幅 度降低了静电除尘器造价。
附图说明
[0017] 下面结合附图和实施例对本发明进一步说明。
[0018] 图1、本发明的电路原理图。
[0019] 图2、是高效率静电除尘器实施例的纵向剖面构造图。
[0020] 图3、是图2的1-1的剖视图。
[0021] 图4 :是高效率静电除尘器第二个实施例的纵向剖面构造图。
[0022] 图5、是高效率静电除尘器第三个实施例的纵向剖面构造图。
[0023] 图6、新型集尘极板实施例的构造图
[0024] 图7 :是高效率静电除尘器第四个实施例的纵向剖面构造图。
[0025] 图8、第四个实施例的新型集尘极板实施例的构造图
[0026] 图9 :是高效率静电除尘器第四个实施例的电晕放电极板构造图。
[0027] 图10、是图9的2-2的剖视图。
[0028] 图中“电晕放电极线、2、新型集尘极板、3、档风板、4、进风沉降通道、5、排风沉降通 道、6、除尘箱体、7、进风箱、8、排风箱、9、气流分体板、10、阀门、11、灰斗、12、振打装置、12、 通风孔、13、电晕放电极板、14、放电极尖
具体实施方式
[0029] 在图1中,直流高压电源输出电压的负极端与电晕放电极[1]电连接。输出的电 压的正极端与集尘极板[2]电连接并接地。
[0030] 在图2中,所示的实施例中,在除尘箱体[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]。在除尘箱体中,安装有多条由电晕放电线 [1]和新型集尘极板[2]组合的沉降通道。在沉降通道的两端,用档风板[3]分别将沉降通 道组合成多条进风沉降通道[41和排风沉降通道[5],每条排风沉降通道[4] 口都对应连接 在排风箱[8]中安装的一个阀门[10]。[0031] 在图4所示的第二个实施例中,是在除尘的箱体中设置二个电场,每个电场都安 装着由电晕放电极线[1]和新型集尘极板[2]与档风板[3]共同组合的多条进风沉降通道 [4]和排风沉降通道[5]。第一电场中的清灰振打,可以随时由自动控制系统进行操作,第 二电场中的清灰振打需自动控制系统轮流关闭每条沉降通道口上的阀门[10]后,进行该 通道清灰振打工作。
[0032] 在图5所示的第三个实施例中,是在静电除尘器中,在除尘箱体[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]。在除尘箱体中,安装 有多条由电晕放
[0033] 电线[1]和新型集尘极板[2]组合的沉降通道。在沉降通道的两端,用档风板[3] 分别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],清灰振打采用一般方 式即可完成,是应用于除尘要求不高场合。该方案也可以应用于现有的静电除尘器改造。
[0034] 在图6中所示的是:实施例和第二与第三个实施例中的新型集尘极板,它是在金 属板上等间距排列着通风孔[12]。
[0035] 在图7中,所示的第四个实施例中,是在箱体内排列安装着新型电晕放电极板 [13]和新型集尘板[2]共同组成的多条组合的沉降通道。在沉降通道的两端,用档风板[3] 分别将沉降通道组合成多条进风沉降通道[41和排风沉降通道[5],每条排风沉降通道[4] 口都对应连接在排风箱[8]中安装的一个阀门[10]。
[0036] 在图8中,所示的是图6中第四个实施例中新型集尘极板,它是在金属板上,排列 着等距离,等半经的通风孔。并且每个通风孔的中心都与新型放电极板上安装的放电极尖 都相对应着。
[0037] 在图9中,所示的是图6中第四个实施例中的新型电晕放电极板,它是在带有通风 孔的金属板上等距离的排例安装有等长度的放电极尘[14]。
[0038] 在图10中,所示的是图6中是图9的2-2的剖视图,它是在金属板上,它是在带有 通风孔的金属板上等距离的排例安装有等长度的放电极尘[14]。

Claims (6)

  1. 一种静电除尘器,在箱体两端分别设有进风箱和排风箱,在箱体下部设有灰斗,在箱体中,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,电晕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压输出的正极端电连接并接地,其特征是:在沉降通道的两端分别由挡风板将沉降通道交替组合成多条进风沉降通道和排风沉降通道,每条排风沉降通道口都在排风箱内对应连接安装有一个阀门。
  2. 2.根据权利要求1所述的一种静电除尘器,其特征是:集尘极板上布满通风孔。
  3. 3.根据权利要求1所述的一种静电除尘器,其特征是:挡风板分别交错设置在相邻的 沉降通道两端,组合成进风沉降通道和排风沉降通道,迫使气流从进风沉降通道经过集尘 极板上的孔洞流向相邻的排风沉降通道。
  4. 4.根据权利要求1所述的一种静电除尘器,其特征是:每个阀门的开与关,都由自动控 制系统操作,并且同时与该排风沉降通道上所具有的振打装置同步操作,各条通道清灰振 打的操作是轮流分别有序进行操作的。
  5. 5.一种静电除尘器,在箱体两端分别设有进风箱和排风箱,在箱体下部设有灰斗,在箱 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,电晕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压输出的正极端电连接并接地,其特征是:在沉降通道的两端 分别由挡风板将沉降通道交替组合成多条进风沉降通道和排风沉降通道,每条排风沉降排 风口都与排风箱相连接。
  6. 6.一种静电除尘器,在箱体两端分别设有进风箱和排风箱,在箱体下部设有灰斗,在箱 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,电晕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压输出的正极端电连接并接地,其特征是:是在除尘的箱体中 设置二个电场,每个电场都安装着由电晕放电极线和集尘极板与挡风板共同组合的多条进 风沉降通道和排风沉降通道,在第二电场中每条排风沉降通道口都安装有阀门,每个阀门 的开与关,都由自动控制系统操作,并且同时与该排风沉降通道上所具有的振打装置同步 操作,各条通道清灰振打的操作是轮流分别有序进行操作的。
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US12/063,378 US8057213B2 (en) 2005-08-10 2006-05-24 Moulding apparatus
EP06775328A EP1946845A4 (en) 2005-08-10 2006-08-09 ELECTROSTATIC PRECIPITATION DEVICE HAVING HIGH EFFICIENCY
PCT/CN2006/002010 WO2007016872A1 (fr) 2005-08-10 2006-08-09 Dispositif de precipitation electrostatique presentant une efficacite elevee
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US7901489B2 (en) 2011-03-08
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US20100166905A1 (en) 2010-07-01
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