WO2016029333A1 - Embedded-type electrified bag composite dust collector - Google Patents

Embedded-type electrified bag composite dust collector Download PDF

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WO2016029333A1
WO2016029333A1 PCT/CN2014/076862 CN2014076862W WO2016029333A1 WO 2016029333 A1 WO2016029333 A1 WO 2016029333A1 CN 2014076862 W CN2014076862 W CN 2014076862W WO 2016029333 A1 WO2016029333 A1 WO 2016029333A1
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dust
dust collecting
stage
electric
filter bag
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PCT/CN2014/076862
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French (fr)
Chinese (zh)
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章荣发
卢乾东
李良芳
丘佳锐
王艳媛
苏可美
章潮鸿
邱小龙
李瑰萍
林志祥
陈良锦
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福建东源环保有限公司
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Priority to CN201310164178.5A priority Critical patent/CN103203156B/en
Priority to CN201310164178.5 priority
Application filed by 福建东源环保有限公司 filed Critical 福建东源环保有限公司
Publication of WO2016029333A1 publication Critical patent/WO2016029333A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of devices for separating particles from gases or vapours
    • 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
    • B03C3/017Combinations of electrostatic separation with other processes, not otherwise provided for

Abstract

An embedded-type electrified bag composite dust collector, including, arranged sequentially from front to back in a housing (2), a front-stage electric field dust-collection area and an embedded-type electrified bag composite dust-collection area; within the embedded-type electrified bag composite dust-collection area, two sides of each rear-stage discharge electrode frame (5) are provided with a dust-receiving aperture plate (4) or with a row of dust-receiving aperture plates (4), the space between said two dust-receiving aperture plates (4) or two rows of dust-receiving aperture plates (4) being a rear-stage electric field channel; a filter bag group, comprising at least one filter bag (6), is provided between any two neighboring rear-stage electric field channels; the ventilation apertures of the dust-receiving aperture plates (4) act, within the rear-stage electric field channels, as airflow pathways leading flue gas into the filter bag groups. Because the height of the dust-receiving aperture plates (4) and the height of the rear-stage electric field channels (51) normally exceed the length of the filter bags (6) in the filter bag groups by approximately four meters, a large amount of dust can be collected in the lower side of the filter bag groups, further increasing the dust collection efficacy of the dust collector and extending the service life of the filter bag.

Description

一种嵌入式电袋复合除尘器Embedded electric bag composite dust collector 技术领域Technical field
本发明涉及工业除尘领域,特别是涉及嵌入式电袋复合除尘器。The invention relates to the field of industrial dust removal, in particular to an embedded electric bag composite dust collector.
背景技术Background technique
在火力发电、建材生产和冶金等行业中,人们广泛地应用工业除尘器捕集烟气中的粉尘,以降低大气中的PM2.5浓度,从而提高大气环境质量和保护人体健康。目前,电袋复合除尘器是一种常用的工业除尘器。在1990年代,美国北达科他州大学能源与环境研究中心(EERC)开发了嵌入式电袋复合除尘技术,以免任意一排滤袋清灰时所产生的大部分二次扬尘被相邻排滤袋或自身再次吸附。美国专利申请号为09/813,497、名称为“Advanced hybrid particulate collector and method of operation”的专利发明人提供了一种嵌入式电袋复合除尘器。这种除尘器的主要特征是:在任意相邻的两排滤袋6a之间嵌入两排具有通气孔的收尘孔板4a,并且在这两排收尘孔板4a之间设有一排电晕线51a,从而形成一个嵌入式电袋复合除尘区,请参见图1。所述嵌入式电袋复合除尘区包括电场除尘区和滤袋除尘区。含尘烟气先在所述电场除尘区内被除掉大部分粉尘,然后再通过收尘孔板4a上的通气孔进入所述滤袋除尘区,而后被滤袋6a过滤。在嵌入式电袋复合除尘区,因所述每排滤袋6a清灰时所产生的一部分二次扬尘,都能够被所述收尘孔板4a捕集,故大大地降低了这类二次扬尘再次附着到刚被清灰过的那一排滤袋6a的可能性,而所述每排收尘孔板4a清灰时所产生的一部分二次扬尘,能够被与所述收尘孔板4a相邻的那一排滤袋6a吸附;加之进入所述滤袋除尘区的烟气所携带的荷电粉尘,被所述滤袋6a吸附时尚带有较多电荷量(因其迁移到滤袋6a所经过的路程较短,故在迁移过程中损失的电荷量较少),使沉积在滤袋6a表面的粉尘层较为蓬松,因而滤袋过滤风速允许高达3.0m/min,故这种嵌入式电袋复合除尘器具有除尘效率高、滤袋过滤风速高、设备体积小、滤袋清灰周期长和滤袋使用寿命长的优点,请参阅《电除尘器的选型安装与运行管理》一书(黎 在时编著,中国电力出版社,2005年6月出版,第135至136页)。In the fields of thermal power generation, building materials production and metallurgy, industrial dust collectors are widely used to capture dust in flue gas to reduce the concentration of PM2.5 in the atmosphere, thereby improving the quality of the atmospheric environment and protecting human health. At present, the electric bag composite dust collector is a commonly used industrial dust collector. In the 1990s, the Center for Energy and Environmental Research (EERC) of the University of North Dakota developed an integrated electric bag composite dust removal technology to prevent most of the secondary dust generated by any row of filter bags from being dusted by adjacent filter bags. Or adsorb it again. The inventor of the U.S. Patent Application Serial No. 09/813,497 entitled "Advanced hybrid particulate collector and method of operation" provides an embedded electric bag composite dust remover. The main feature of the dust collector is that two rows of dust collecting holes 4a having vent holes are embedded between any two adjacent rows of filter bags 6a, and a row of electricity is arranged between the two rows of dust collecting plates 4a. The halo line 51a forms an embedded electric bag composite dust removal area, see Figure 1. The embedded electric bag composite dust removing area includes an electric field dust removing area and a filter bag dust removing area. The dusty flue gas is first removed from most of the dust in the electric field dedusting zone, and then enters the filter bag dust removal zone through the vent hole on the dust collecting orifice 4a, and then filtered by the filter bag 6a. In the embedded electric bag composite dust removing area, a part of the secondary dust generated by the cleaning of each of the filter bags 6a can be trapped by the dust collecting plate 4a, thereby greatly reducing the secondary a possibility that the dust is again attached to the row of filter bags 6a that has just been cleaned, and a part of the secondary dust generated when the dust collecting plate 4a of each row is cleaned can be combined with the dust collecting plate. The adjacent filter bag 6a of 4a is adsorbed; and the charged dust carried by the flue gas entering the dust removing area of the filter bag is adsorbed by the filter bag 6a with a large amount of charge (because it migrates to the filter) The distance traveled by the bag 6a is short, so that the amount of charge lost during the migration process is small, so that the dust layer deposited on the surface of the filter bag 6a is relatively bulky, so that the filter bag filter wind speed is allowed to be as high as 3.0 m/min. The embedded electric bag composite dust collector has the advantages of high dust removal efficiency, high filter bag wind speed, small equipment volume, long filter bag cleaning cycle and long service life of the filter bag. Please refer to the selection and installation management of the electrostatic precipitator. One book (Li Edited at the time, China Electric Power Press, published in June 2005, pp. 135-136).
如图2和图3所示,在除尘器入口烟气参数不变的情况下,通过增设前级收尘板7b(注:极板上没有通气孔)、并在增设的各对前级收尘板7b之间设置若干根电晕线51b,可以增大嵌入式电袋复合除尘器的比集尘面积,从而提高其电场除尘区的除尘效率、并降低其滤袋除尘区的入口烟气含尘浓度;然后,我们则可延长滤袋清灰周期。这样,一方面可以减少因滤袋清灰而穿过滤料的粉尘量,从而提高嵌入式电袋复合除尘器的除尘效率,另一方面还可以延长滤袋使用寿命,请参阅徐庆撰写的硕士学位论文《静电布袋紧密混合除尘技术开发与工程化设计》中的第71~76页。需要说明的是,在每排收尘孔板4b上,任意相邻的两件收尘孔板4b之间的间隙亦为经预除尘后的烟气进入所述滤袋除尘区的气流通路。As shown in Fig. 2 and Fig. 3, in the case where the flue gas parameters of the precipitator inlet are unchanged, the pre-stage dust collecting plate 7b is added (note: there is no vent hole on the electrode plate), and the pair of pre-stages are added. A plurality of corona wires 51b are arranged between the dust plates 7b, which can increase the specific dust collecting area of the embedded electric bag composite dust collector, thereby improving the dust removing efficiency of the electric field dust removing area and reducing the inlet flue gas of the filter bag dust removing area. Dust concentration; then, we can extend the filter bag cleaning cycle. In this way, on the one hand, the amount of dust that passes through the filter material due to the cleaning of the filter bag can be reduced, thereby improving the dust removal efficiency of the embedded electric bag composite dust collector, and on the other hand, the service life of the filter bag can be prolonged, please refer to the master degree written by Xu Qing. The 71st to 76th pages of the dissertation "Development and Engineering Design of Electrostatic Bags Closely Mixed Dedusting Technology". It should be noted that, on each row of the dust collecting plate 4b, the gap between any two adjacent pieces of the dust collecting plate 4b is also an air flow path of the pre-dusting flue gas entering the dust removing area of the filter bag.
如图2所示,因在增设的十二排前级收尘板7b(注:两排各有四块极板7b,十排各有三块极板7b)之间仅设置有六排电晕线51b(注:每排有七根电晕线51b),故增设的十二排前级收尘板7b都只能单面收尘。换言之,增设的十二排前级收尘板7和六排电晕线51b形成了六个前级电场通道。由此可见,在所述相距最远的两排前级收尘板7b之间的空间内,大约只有55%的空间体积被用于静电除尘。As shown in Fig. 2, only six rows of corona are provided between the twelve rows of pre-stage dust collecting plates 7b (note: four plates each having four plates 7b and ten rows each having three plates 7b). Line 51b (Note: there are seven corona lines 51b in each row), so the twelve rows of pre-stage dust collecting plates 7b added can only collect dust on one side. In other words, the twelve rows of the front stage dust collecting plates 7 and the six rows of corona wires 51b form six front stage electric field channels. It can be seen that in the space between the two rows of the front-stage dust collecting plates 7b which are furthest apart, only about 55% of the space volume is used for electrostatic dust removal.
另外,随着这种嵌入式电袋复合除尘器规格的增大,所述前级收尘板7b高度可达15米,而所述滤袋组中的滤袋6b长度一般为6米至9米,最大长度为10米,加之所述收尘孔板4b高度与所述滤袋6b长度大致相等,故其嵌入式电袋复合除尘区和其灰斗之间的空间是相当大的。在这个大空间内,既不设置电晕极也不设置收尘极,致使所述滤袋除尘区的入口烟气含尘浓度显著高于设置有电晕极和收尘极时,故须设定比较短的滤袋清灰周期,继而导致其除尘效率下降和滤袋使用寿命缩短。In addition, as the specification of the embedded electric bag composite dust collector increases, the height of the front stage dust collecting plate 7b can reach 15 meters, and the length of the filter bag 6b in the filter bag group is generally 6 meters to 9 meters. The maximum length of the meter is 10 meters, and the height of the dust collecting plate 4b is substantially equal to the length of the filter bag 6b, so the space between the embedded electric bag composite dust removing area and the ash hopper is quite large. In this large space, neither the corona pole nor the dust collecting pole is provided, so that the dust concentration of the inlet flue gas in the dust removing area of the filter bag is significantly higher than when the corona pole and the dust collecting pole are provided, so it is necessary to set A relatively short filter bag cleaning cycle, which in turn leads to a decrease in dust removal efficiency and a shortened filter bag life.
通过上述分析可知,现有大型嵌入式电袋复合除尘器存在着空间利用率比较低的缺点。 According to the above analysis, the existing large-scale embedded electric bag composite dust collector has the disadvantage of relatively low space utilization.
发明内容Summary of the invention
本发明之目的是提供一种空间利用率比较高的嵌入式电袋复合除尘器。这种嵌入式电袋复合除尘器能够大幅度降低其滤袋除尘区的入口烟气含尘浓度,故可适当延长滤袋清灰周期,以提高该除尘器的除尘效率、延长滤袋使用寿命、节约清灰能耗和降低该除尘器的运行费用。
The object of the present invention is to provide an embedded electric bag composite dust remover with relatively high space utilization rate. The embedded electric bag composite dust collector can greatly reduce the dust concentration of the inlet flue gas in the filter bag dust removal area, so the filter bag cleaning cycle can be appropriately extended to improve the dust removal efficiency of the dust collector and prolong the service life of the filter bag. , saving energy consumption of cleaning and reducing the operating cost of the dust collector.
为了达到上述目的,本发明采用如下技术方案:In order to achieve the above object, the present invention adopts the following technical solutions:
一种嵌入式电袋复合除尘器,包括壳体(2)和自前而后依次设置在壳体(2)内的前级电场除尘区及嵌入式电袋复合除尘区;所述前级电场除尘区包括复数件前级电晕极框架(8)和复数件前级收尘板(7)或者复数排前级收尘板(7);所述嵌入式电袋复合除尘区包括后级电场除尘区和滤袋除尘区;所述后级电场除尘区包括复数件后级电晕极框架(5)和复数件收尘孔板(4)或者复数排收尘孔板(4),所述每件后级电晕极框架(5)上设有若干根后级电晕线(51);所述滤袋除尘区包括复数个滤袋组;所述每件后级电晕极框架(5)两侧皆设置有一件收尘孔板(4)或者一排收尘孔板(4),两件收尘孔板(4)或者两排收尘孔板(4)之间的空间为一个后级电场通道;在所述任意相邻的两个后级电场通道之间均设置有一个滤袋组,所述每个滤袋组至少包括一排滤袋(6);所述每排滤袋(6)平行于或者基本上平行于所述后级电场通道;设置在所述收尘孔板(4)上的通气孔为所述后级电场通道内的烟气进入所述滤袋除尘区的气流通路;所述收尘孔板(4)高度和所述后级电暈线(51)高度皆至少比所述滤袋组内的滤袋(6)长度大两米,以利用所述滤袋组下方的空间进行静电除尘。
An embedded electric bag composite dust remover comprises a casing (2) and a front-stage electric field dust-removing zone and an embedded electric bag composite dust-removing zone disposed in the casing (2) from the front to the rear; the front-stage electric field dust-removing zone The utility model comprises a plurality of pre-stage corona pole frames (8) and a plurality of pre-stage dust collecting plates (7) or a plurality of pre-stage dust collecting plates (7); the embedded electric bag composite dedusting zone comprises a rear-stage electric field dedusting zone And the filter bag dust removal zone; the rear stage electric field dust removal zone comprises a plurality of post-stage corona pole frames (5) and a plurality of dust collecting orifice plates (4) or a plurality of rows of dust collecting holes plates (4), each of which The rear corona pole frame (5) is provided with a plurality of rear corona wires (51); the filter bag dust removing region comprises a plurality of filter bag groups; each of the rear corona pole frames (5) The side is provided with a dust collecting plate (4) or a row of dust collecting plate (4), and the space between the two dust collecting plates (4) or the two rows of dust collecting plates (4) is a rear stage. An electric field channel; a filter bag group is disposed between the two adjacent second-stage electric field channels, and each filter bag group includes at least one row of filter bags (6); each of the filter bags 6) parallel or substantially parallel to the subsequent electric field channel; the vent hole disposed on the dust collecting plate (4) is the flue gas in the rear electric field channel entering the filter bag dust removing area Air flow path; the height of the dust collecting plate (4) and the height of the rear corona wire (51) are at least two meters larger than the length of the filter bag (6) in the filter bag group to utilize the filter The space under the bag group is electrostatically dusted.
优选地,所述收尘孔板(4)的上部和中部皆设有若干个通气孔,所述收尘孔板(4)下部则不设通气孔,以增大所述收尘孔板(4)的收尘面积。
Preferably, the upper and middle portions of the dust collecting plate (4) are provided with a plurality of vent holes, and the lower portion of the dust collecting plate (4) is provided with no vent holes to increase the dust collecting plate ( 4) The dust collection area.
优选地,所述通气孔形状呈圆形或者矩形或者三角形。
Preferably, the vent hole has a circular shape or a rectangular shape or a triangular shape.
优选地,所述每排收尘孔板(4)至少包括两件收尘孔板(4);所述收尘孔板(4)的防风沟侧皆面向与所述收尘孔板(4)相邻的那一件后级电晕极框架(5),以利于所述各件收尘孔板(4)捕集进入所述后级电场通道中的粉尘和减少二次扬尘。
Preferably, each row of the dust collecting plate (4) comprises at least two pieces of dust collecting holes (4); the windproof groove side of the dust collecting plate (4) faces the dust collecting plate (4) An adjacent one-stage corona pole frame (5) is provided to facilitate the dust collecting plate (4) of the pieces to capture dust entering the electric field passage in the rear stage and reduce secondary dust.
优选地,所述任意相邻两件收尘孔板(4)之间的间隙大于或等于30mm;所述后级电场通道上部和中部的部分烟气可以通过所述相邻收尘孔板(4)之间的间隙进入所述滤袋除尘区。
Preferably, a gap between the adjacent two pieces of dust collecting holes (4) is greater than or equal to 30 mm; part of the flue gas of the upper and middle portions of the rear electric field channel may pass through the adjacent dust collecting plate ( 4) The gap between the filters enters the filter bag dust removal zone.
优选地,所述收尘孔板(4)中间的平直部分至少设有一个凹凸槽,以加强所述收尘孔板(4)刚度。
Preferably, the flat portion in the middle of the dust collecting plate (4) is provided with at least one concave and convex groove to strengthen the rigidity of the dust collecting plate (4).
优选地,所述收尘孔板(4)高度等于或者接近于所述前级收尘板(7)高度,所述后级电晕线(51)高度等于或者接近于安装在所述前级电暈极框架(8)上的前级电暈线(81)高度,以便充分利用所述滤袋组下方的空间进行静电除尘。
Preferably, the height of the dust collecting plate (4) is equal to or close to the height of the front stage dust collecting plate (7), and the height of the rear stage corona wire (51) is equal to or close to that of the front stage. The height of the front corona wire (81) on the corona pole frame (8) is such that the space under the filter bag group is utilized to perform electrostatic dust removal.
优选地,在与所述收尘孔板相邻的每排滤袋(6)正下方均设置有一件辅助电暈极框架(26);所述每件辅助电晕极框架(26)上设有若干根辅助电暈线(261);所述辅助电暈极框架(26)与所述后级电暈极框架(5)及所述收尘孔板(4)相互平行,以便利用所述收尘孔板(4)下部进行双面收尘。
Preferably, an auxiliary corona pole frame (26) is disposed directly below each row of filter bags (6) adjacent to the dust collecting plate; each of the auxiliary corona pole frames (26) is provided a plurality of auxiliary corona wires (261); the auxiliary corona pole frame (26) is parallel to the rear corona pole frame (5) and the dust collecting orifice plate (4) so as to utilize the The lower part of the dust collecting plate (4) is double-sided dust collecting.
优选地,所述每个滤袋组下方皆设有挡风板(25),以减小所述滤袋除尘区底部的气流上升速度;所述挡风板(25)的横截面呈一字形或者L字形或者V字形。
Preferably, each of the filter bag sets is provided with a wind deflector (25) to reduce the airflow rising speed at the bottom of the filter bag dust removal zone; the wind deflector (25) has a cross section in a cross shape Or L-shaped or V-shaped.
优选地,所述前级电场除尘区和所述后级电场除尘区均采用高频高压电源。
Preferably, the front stage electric field dedusting area and the rear stage electric field dedusting area are both high frequency and high voltage power sources.
在本发明人所提供的一种嵌入式电袋复合除尘器内,所述收尘孔板高度和所述后级电暈线高度皆至少比所述滤袋组内的滤袋长度大两米,以利用所述滤袋组下方的空间进行静电除尘(包括捕集滤袋清灰时落下的部分粉尘),从而降低所述滤袋除尘区的入口烟气含尘浓度。因所述滤袋除尘区的入口烟气含尘浓度已被大幅度降低,故可适当延长滤袋清灰周期,以提高该除尘器的除尘效率、延长滤袋使用寿命、节约清灰能耗和降低该除尘器的运行费用。
In an embedded electric bag composite dust collector provided by the present inventors, the height of the dust collecting plate and the height of the rear corona wire are at least two meters larger than the length of the filter bag in the filter bag group. The electrostatic dust is removed by using the space below the filter bag group (including collecting part of the dust falling when the filter bag is cleaned), thereby reducing the dust concentration of the inlet flue gas in the filter bag dust removal zone. Since the dust concentration of the inlet flue gas in the dust removal area of the filter bag has been greatly reduced, the filter bag cleaning cycle can be appropriately extended to improve the dust removal efficiency of the dust collector, prolong the service life of the filter bag, and save energy consumption for cleaning. And reduce the operating cost of the dust collector.
另外,由于大部分的荷电粉尘会随气流从所述后级电场通道出来,迁移到所述滤袋表面所经过的路程比较短,故这些粉尘具有较多的电荷,并且在滤袋表面形成比较蓬松的粉尘层,大大降低了烟气通过滤袋的阻力系数,因而能够降低滤料的磨损率和除尘系统阻力,并且允许采用较高的滤袋过滤风速。
In addition, since most of the charged dust will flow out from the rear-stage electric field passage with the airflow, the distance traveled to the surface of the filter bag is relatively short, so the dust has more electric charge and is formed on the surface of the filter bag. Comparing the fluffy dust layer greatly reduces the drag coefficient of the flue gas passing through the filter bag, thereby reducing the wear rate of the filter material and the resistance of the dust removal system, and allowing a higher filter bag to filter the wind speed.
在进一步的实施方式中,在本发明人所提供的一种嵌入式电袋复合除尘器内,所述每排收尘孔板至少包括两件收尘孔板;所述收尘孔板的防风沟侧皆面向与所述收尘孔板相邻的那一件后级电暈极框架,以利于所述各件收尘孔板捕集进入所述后级电场通道中的粉尘和减少二次扬尘。因此,我们可以再延长一点滤袋清灰周期,从而更进一步地提高该除尘器的除尘效率、延长滤袋使用寿命、节约清灰能耗和降低该除尘器的运行费用。
In a further embodiment, in an embedded electric bag composite dust collector provided by the present inventors, each of the rows of dust collecting holes comprises at least two pieces of dust collecting holes; and the dust collecting plate is windproof The groove side faces the one-stage corona pole frame adjacent to the dust collecting hole plate, so as to facilitate the dust collecting holes of the pieces to enter the electric field channel of the rear stage and reduce the secondary Dust. Therefore, we can extend the filter bag cleaning cycle a little longer, thereby further improving the dust removal efficiency of the dust collector, prolonging the life of the filter bag, saving the dust consumption and reducing the operating cost of the dust collector.
附图说明DRAWINGS
图1为现有一种典型嵌入式电袋复合除尘器的俯视示意图;1 is a top plan view of a typical embedded electric bag composite dust remover;
图2为具有前级收尘板的嵌入式电袋复合除尘器的俯视示意图;2 is a top plan view of an embedded electric bag composite dust remover with a front stage dust collecting plate;
图3为图2所示嵌入式电袋复合除尘器的结构示意图;3 is a schematic structural view of the embedded electric bag composite dust remover shown in FIG. 2;
图4为本发明第一实施例的结构示意图;Figure 4 is a schematic structural view of a first embodiment of the present invention;
图5为图4所示嵌入式电袋复合除尘器的俯视示意图;Figure 5 is a top plan view of the embedded electric bag composite dust remover shown in Figure 4;
图6为图4中的A向视图(拆去后级电暈极和后级收尘极两种电极的振打装置);Figure 6 is a view in the direction of arrow A in Figure 4 (removing the rapping device of the post-stage corona pole and the rear-stage dust collecting electrode);
图7为本发明第一实施例中后级电晕极框架的结构示意图;7 is a schematic structural view of a rear-stage corona pole frame in a first embodiment of the present invention;
图8为本发明第二实施例的结构示意图;Figure 8 is a schematic structural view of a second embodiment of the present invention;
图9为图8中的B向视图(拆去后级电暈极和后级收尘极两种电极的振打装置);Figure 9 is a B-direction view of Figure 8 (a rapping device for removing the two electrodes of the rear stage corona pole and the rear stage dust collecting pole);
图10为本发明第一实施例中收尘孔板下部的横断面示意图;Figure 10 is a cross-sectional view showing the lower portion of the dust collecting plate in the first embodiment of the present invention;
图11为本发明第一实施例中收尘孔板上的圆形通气孔布置方式示意图;Figure 11 is a schematic view showing the arrangement of circular vent holes on the dust collecting plate in the first embodiment of the present invention;
图12为本发明中收尘孔板上的一种通气孔形状示意图;Figure 12 is a schematic view showing the shape of a vent hole on the dust collecting plate of the present invention;
图13为本发明中收尘孔板上的一种通气孔形状示意图;Figure 13 is a schematic view showing the shape of a vent hole on the dust collecting plate of the present invention;
图14为本发明中收尘孔板上的一种通气孔形状示意图;Figure 14 is a schematic view showing the shape of a vent hole on the dust collecting plate of the present invention;
图15为本发明中收尘孔板上的一种通气孔形状示意图。Figure 15 is a schematic view showing the shape of a vent hole on the dust collecting plate of the present invention.
图中各标记表示:The symbols in the figure indicate:
进气烟箱1、1a、1b;壳体2、2a、2b;V字形导流板3、3a、3b、3c;收尘孔板4、4a、4b;后级电晕极框架5;后级电晕线51;电晕极框架5a、5b;电晕线51a、51b;滤袋6、6a、6b;前级收尘板7、7b;前级电晕极框架8;前级电晕线81;前级电晕极防摆框架9;灰斗10;阻流板11;净气室12;出口烟道13;滤袋清灰装置14;提升阀装置15;绝缘套管16;绝缘子室17;壳体顶梁18;后级电晕极悬吊杆19;后级电晕极吊梁20;后级电晕极防摆框架21;后级电晕极上部振打砧22;后级电晕极下部振打砧23;后级收尘极振打砧24;挡风板25;辅助电晕极框架26;辅助电晕线261;辅助电晕极悬吊杆27;辅助电晕极吊梁28;辅助电晕极振打砧29。Intake air box 1, 1a, 1b; housings 2, 2a, 2b; V-shaped baffles 3, 3a, 3b, 3c; dust collecting plates 4, 4a, 4b; rear corona pole frame 5; Corona wire 51; corona pole frame 5a, 5b; corona wire 51a, 51b; filter bag 6, 6a, 6b; front stage dust collecting plate 7, 7b; front stage corona pole frame 8; Line 81; front stage corona pole-proof frame 9; ash hopper 10; spoiler 11; clean air chamber 12; outlet flue 13; filter bag cleaning device 14; poppet valve device 15; insulating sleeve 16; Room 17; housing top beam 18; rear stage corona pole suspension rod 19; rear stage corona pole suspension beam 20; rear stage corona pole anti-swing frame 21; rear stage corona pole upper anvil 22; Stage corona pole bottom vibrating anvil 23; rear stage dust collecting pole vibrating anvil 24; wind deflector 25; auxiliary corona pole frame 26; auxiliary corona wire 261; auxiliary corona pole suspension rod 27; auxiliary corona The pole lifting beam 28; the auxiliary corona poleing anvil 29.
具体实施方式detailed description
为了使本技术领域内的技术人员更好地理解本技术方案,下面结合附图和实施例对本发明作进一步说明。In order to make the technical solutions better understood by those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
第一实施例First embodiment
如图4至图7所示,本发明所提供的一种嵌入式电袋复合除尘器,包括壳体2和自前而后依次设置在壳体2内的前级电场除尘区、嵌入式电袋复合除尘区;所述前级电场除尘区配用一台高频高压电源(未图示)、一套前级收尘极振打装置和一套前级收尘极振打装置;所述前级电场除尘区包括十六排前级收尘板7和十五件设有前级电晕线81的前级电晕极框架8,以便使前级收尘板7能够双面收尘,从而显著降低所述嵌入式电袋复合除尘区的入口烟气含尘浓度。As shown in FIG. 4 to FIG. 7 , an embedded electric bag composite dust remover provided by the present invention comprises a casing 2 and a front-stage electric field dust-removing zone and an embedded electric bag composite which are arranged in the casing 2 from the front to the rear. a dust removal zone; the front stage electric field dedusting zone is equipped with a high frequency high voltage power supply (not shown), a set of pre-stage dust collecting rapping device and a set of pre-stage dust collecting rapping device; The electric field dedusting zone comprises sixteen rows of pre-stage dust collecting plates 7 and fifteen pieces of front-stage corona pole frames 8 provided with front-stage corona wires 81, so that the front-stage dust collecting plates 7 can be double-sidedly dust-removed, thereby being remarkable The dust concentration of the inlet flue gas in the composite dust removal zone of the embedded electric bag is reduced.
所述相邻的两排前级收尘板7之间的距离为400mm。所述每排前级收尘板7包括八件高度为14.5米的前级收尘板7,八件前级收尘板7平分为两组,每组安装在一件极板排上。所述每件前级电晕极框架8包括两件结构完全相同的前级电晕极小框架;所述每件前级电晕极小框架上设有八根前级电晕线81;因前级电晕线81的高度H1已达14.1米(H1=14.1米),使得前级电晕线81易晃 动、易弯曲,故将每根前级电晕线81分成六段、并安装在所述前级电晕极小框架上;所述六段前级电晕线大体在同一条铅垂线上。The distance between the adjacent two rows of front stage dust collecting plates 7 is 400 mm. Each of the pre-stage dust collecting plates 7 comprises eight pre-stage dust collecting plates 7 having a height of 14.5 meters, and eight pre-stage dust collecting plates 7 are equally divided into two groups, each set being mounted on one plate row. Each of the front-stage corona pole frames 8 includes two pre-corona minimal frames having identical structures; each of the front-stage corona mini-frames is provided with eight front-level corona wires 81; The height H 1 of the front corona wire 81 has reached 14.1 meters (H 1 = 14.1 meters), so that the front corona wire 81 is easy to shake and bend, so each front corona wire 81 is divided into six segments, and Installed on the front stage corona minimal frame; the six-stage front stage corona line is substantially on the same vertical line.
所述嵌入式电袋复合除尘区包括后级电场除尘区和滤袋除尘区。所述后级电场除尘区配用一台高频高压电源(未图示)、一套后级收尘极振打装置和两套后级电晕极振打装置;所述后级电场除尘区包括十六排收尘孔板4和八件设有后级电晕线51的后级电晕极框架5;每件后级电晕极框架5两侧皆设置有一排收尘孔板4,所述两排收尘孔板4之间的空间为一个后级电场通道(注:通道宽度为400mm);在所述任意相邻的两个后级电场通道之间均设置有一个滤袋组;位于所述每个滤袋组两侧的两排收尘孔板4之间的距离为400mm;所述每个滤袋组包括一排具有十六条长为10米、直径为160mm的滤袋6;所述每排滤袋6平行于或者基本上平行于所述后级电场通道;所述收尘孔板4上的通气孔为所述后级电场通道内的烟气进入所述滤袋除尘区的气流通路。The embedded electric bag composite dust removing area comprises a rear stage electric field dust removing area and a filter bag dust removing area. The post-stage electric field dedusting zone is equipped with a high-frequency high-voltage power source (not shown), a set of rear-stage dust collecting pole rapping device and two sets of post-stage corona pole rapping devices; the latter electric field dedusting zone The utility model comprises a 16-row dust collecting plate 4 and eight rear corona pole frames 5 provided with a rear corona wire 51; each of the rear corona pole frames 5 is provided with a row of dust collecting holes 4 on both sides thereof, The space between the two rows of dust collecting plates 4 is a rear electric field channel (note: the channel width is 400 mm); a filter bag group is disposed between the adjacent two adjacent rear electric field channels. The distance between the two rows of dust collecting plates 4 on each side of each filter bag group is 400 mm; each filter bag group includes a row of sixteen filters having a length of 10 meters and a diameter of 160 mm. a bag 6; each of the filter bags 6 is parallel or substantially parallel to the rear electric field channel; the vent hole on the dust collecting plate 4 is the flue gas in the electric field channel of the rear stage entering the filter Airflow path in the dust removal area of the bag.
所述每排收尘孔板4包括八件高度为15.0米的收尘孔板4,八件收尘孔板4安装在同一件收尘孔板排上。所述每件收尘孔板排下部设有一件后级收尘极振打砧24,以便通过一套后级收尘极振打装置对收尘孔板4进行振打清灰。另外,由图10和图11可见,所述收尘孔板4中间的平直部分还设有一个凹凸槽,以加强所述收尘孔板4刚度。Each row of the dust collecting plate 4 comprises eight pieces of the dust collecting plate 4 having a height of 15.0 meters, and the eight pieces of the dust collecting plate 4 are mounted on the same row of the collecting holes. The lower part of each of the dust collecting plate rows is provided with a rear stage dust collecting pole vibrating anvil 24 for vibrating and cleaning the dust collecting hole plate 4 through a set of rear stage dust collecting pole rapping device. In addition, as can be seen from FIG. 10 and FIG. 11, the flat portion in the middle of the dust collecting plate 4 is further provided with a concave-convex groove to reinforce the rigidity of the dust collecting plate 4.
所述各件后级电晕极框架5吊挂在后级电晕极吊梁20上,并且其下部与后级电晕极防摆框架21连接。后级电晕极吊梁20通过后级电晕极悬梁杆19、支承螺母、支承盖与绝缘套管16连接。The respective rear stage corona pole frames 5 are hung on the rear stage corona pole beam 20, and the lower portion thereof is connected to the rear stage corona pole anti-swing frame 21. The rear stage corona pole beam 20 is connected to the insulating sleeve 16 through the rear stage corona pole beam 19, the back nut and the support cover.
实际上,所述每件后级电晕极框架5包括两件结构大致相同的后级电晕极小框架和六件联接块;所述两件后级电晕极小框架各设有六根后级电晕线51;因后级电晕线51的高度H2已达14.4米(H2=14.4米),使得后级电晕线51易晃动、易弯曲,故将每根后级电晕线51分成六段、并安装在所述后级电晕极小框架上;所述六段后级电晕线大体在同一条铅垂线上。所述两件后级电晕极小框架和六件联接块通过焊接联成一体,其中一件后级电晕极小框架的一侧设 有一件后级电晕极上部振打砧22和一件后级电晕极下部振打砧23,以便通过两套后级电晕极振打装置对后级电晕极框架5进行振打清灰。In fact, each of the rear stage corona pole frames 5 comprises two rear-stage corona mini-frames and six-piece coupling blocks having substantially the same structure; the two-piece rear-stage corona mini-frames are each provided with six The corona wire 51; because the height H 2 of the rear corona wire 51 has reached 14.4 meters (H 2 = 14.4 meters), so that the rear corona wire 51 is easy to sway and bend, so each post-level corona The line 51 is divided into six sections and mounted on the rear stage corona minimal frame; the six-stage rear stage corona line is substantially on the same vertical line. The two-stage rear-stage corona mini-frame and the six-piece coupling block are integrally joined by welding, wherein one side of the rear-stage corona minimal frame is provided with a rear-stage corona pole upper vibrating anvil 22 and a The post-stage corona pole lowers the anvil 23 to vibrate the rear corona pole frame 5 through two sets of post-stage corona pole rapping devices.
烟气自进气烟箱1进入壳体2内的前级电场除尘区。因所述前级收尘板7能够双面收尘,故烟气在所述前级电场除尘区可被除去大部分粉尘。然后,在V字形导流板3的引导下,绝大部分位于所述前级电场除尘区上部和中部的烟气,直接冲进所述后级电场通道上部和中部,而后这些烟气中的大部分粉尘在所述后级电场除尘区内再次荷电,并且有一部分荷电粉尘沉积在收尘孔板4或者后级电晕极框架5上,其余荷电粉尘和不带电粉尘则随气流通过收尘孔板4上的通气孔,进入设有所述七个滤袋组的滤袋除尘区;或者先随气流冲出所述嵌入式电袋除尘区,然后再随气流折向上流动,最后进入所述滤袋除尘区的顶部。少部分位于所述前级电场除尘区上部和中部的烟气,则直接通过所述V字形导流板3与所述收尘孔板4之间的空隙进入所述滤袋除尘区。经所述滤袋6过滤后的烟气进入净气室12,再经提升阀装置15从出口烟道13排出,而原来在烟气中的粉尘则被阻留在滤袋6表面上。The flue gas enters the pre-stage electric field dedusting zone in the casing 2 from the intake case 1. Since the front stage dust collecting plate 7 can collect dust on both sides, the flue gas can be removed from most of the dust in the front stage electric field dust removing area. Then, under the guidance of the V-shaped baffle 3, most of the flue gas located in the upper and middle portions of the pre-stage electric field dedusting zone directly rushes into the upper and middle portions of the rear-stage electric field channel, and then in the flue gas Most of the dust is charged again in the electric field dedusting zone of the latter stage, and a part of the charged dust is deposited on the dust collecting plate 4 or the rear corona pole frame 5, and the remaining charged dust and the uncharged dust accompany the air flow. Passing through the vent hole on the dust collecting plate 4, entering the dust removing area of the filter bag provided with the seven filter bag groups; or first rushing out the dust-removing area of the embedded electric bag with the air flow, and then flowing upward with the air flow, Finally enter the top of the filter bag dust removal zone. A small portion of the flue gas located in the upper portion and the middle portion of the pre-stage electric field dust removing region directly enters the filter bag dust removing region through a gap between the V-shaped baffle plate 3 and the dust collecting orifice plate 4. The flue gas filtered through the filter bag 6 enters the clean room 12, and is discharged from the outlet flue 13 via the poppet valve device 15, and the dust originally in the flue gas is retained on the surface of the filter bag 6.
经所述前级电场除尘区除去大部分粉尘之后,在V字形导流板3的引导下,绝大部分位于前级电场除尘区下部的烟气直接冲入所述后级电场通道下部,其中的大多数粉尘在所述后级电场除尘区内再次荷电,并且有一部分荷电粉尘沉积到收尘孔板4或者后级电晕极框架5上,其余荷电粉尘和不带电粉尘随气流上升至所述后级电场通道中部和上部,然后随气流通过收尘孔板4上的通气孔,进入所述滤袋除尘区;或者先随气流冲出所述嵌入式电袋除尘区,然后再随气流折向上流动,最后直接进入或随气流通过收尘孔板4上的通气孔进入所述滤袋除尘区。少部分位于前级电场除尘区下部的烟气,则通过所述V字形导流板3下部与所述收尘孔板4下部之间的空隙,进入所述滤袋组下方的进气通道(注:进气通道两侧设有收尘孔板4,但是进气通道内不设置电晕线),然后再折向上流动,并通过挡风板25与收尘孔板4之间的空隙进入所述滤袋除尘区。上述各部分烟气经所述滤袋6过滤后也进入净气室12,再经提升阀装置15从出口烟道13排出,而其中的粉尘则被阻留在滤袋6表面上。
After removing most of the dust through the pre-stage electric field dedusting zone, under the guidance of the V-shaped baffle 3, most of the flue gas located in the lower part of the pre-stage electric field dedusting zone directly rushes into the lower part of the rear-stage electric field channel, wherein Most of the dust is charged again in the electric field dedusting zone of the latter stage, and a part of the charged dust is deposited on the dust collecting plate 4 or the rear corona pole frame 5, and the remaining charged dust and the uncharged dust accompany the air flow. Raising to the middle and upper portions of the electric field channel of the rear stage, and then entering the filter bag dust removal area along with the airflow through the vent hole on the dust collecting plate 4; or first flushing out the embedded electric bag dust removal area with the air flow, and then Then, it flows upwards with the airflow, and finally enters or passes through the vent hole on the dust collecting plate 4 to enter the dust removing area of the filter bag. a portion of the flue gas located in the lower portion of the pre-stage electric field dedusting zone passes through the gap between the lower portion of the V-shaped baffle 3 and the lower portion of the dust collecting plate 4 to enter the intake passage below the filter bag group ( Note: There are dust collecting holes 4 on both sides of the air inlet passage, but no corona wire is installed in the air intake passage, and then flow upwards and upwards, and enter through the gap between the wind shield 25 and the dust collecting plate 4. The filter bag dust removal zone. Each of the above-mentioned portions of the flue gas is filtered through the filter bag 6 and also enters the clean room 12, and is discharged from the outlet flue 13 via the poppet valve device 15, and the dust therein is retained on the surface of the filter bag 6.
该除尘器运行一段时间后,因所述滤袋6吸附了比较多的粉尘而导致其运行阻力上升到一定程度时,则须启动滤袋清灰装置14,使这些粉尘脱离所述滤袋6表面。
After the dust collector is operated for a period of time, when the filter bag 6 adsorbs a relatively large amount of dust and the running resistance thereof rises to a certain extent, the filter bag cleaning device 14 must be activated to disengage the dust from the filter bag 6 surface.
因所述收尘孔板4高度和所述后级电暈线51高度皆至少比所述滤袋组内的滤袋6长度大四米,故收尘孔板4下部和后级电暈极框架5下部能够从流经所述滤袋组下方的烟气中捕集到大量粉尘,包括滤袋清灰时落下的部分粉尘,从而大幅度降低进入所述滤袋除尘区的入口烟气含尘浓度;然后再适当延长滤袋清灰周期,则可提高该除尘器的除尘效率、延长滤袋使用寿命、节约清灰能耗和降低该除尘器的运行费用。
Since the height of the dust collecting plate 4 and the height of the rear corona wire 51 are at least four meters longer than the length of the filter bag 6 in the filter bag group, the lower and rear corona poles of the dust collecting plate 4 The lower part of the frame 5 can capture a large amount of dust from the flue gas flowing under the filter bag group, including a part of the dust falling when the filter bag is cleaned, thereby greatly reducing the inlet smoke entering the filter bag dust removal zone. Dust concentration; then properly extend the filter bag cleaning cycle, which can improve the dust removal efficiency of the dust collector, extend the life of the filter bag, save energy consumption of cleaning and reduce the operating cost of the dust collector.
另外,由于大部分的荷电粉尘会随气流从所述后级电场通道出来,迁移到所述滤袋6表面所经过的路程比较短,故这些粉尘具有较多的电荷,并且在滤袋6表面形成比较蓬松的粉尘层,大大降低了烟气通过滤袋6的阻力系数,因而能够降低滤料的磨损率和除尘系统阻力,并且允许采用较高的滤袋过滤风速。
In addition, since most of the charged dust will flow out from the rear electric field passage with the air current, the distance traveled to the surface of the filter bag 6 is relatively short, so the dust has more electric charge, and in the filter bag 6 The surface forms a relatively fluffy dust layer, which greatly reduces the drag coefficient of the flue gas passing through the filter bag 6, thereby reducing the wear rate of the filter material and the resistance of the dust removal system, and allowing a higher filter bag to filter the wind speed.
值得一提的有三点,一是所述收尘孔板4的上部和中部皆设有若干个通气孔,所述收尘孔板4下部则不设通气孔,以增大所述收尘孔板4的收尘面积,请参见图4。图4中的尺寸符号h为所述收尘孔板4的开孔区域高度;所述开孔区域高度h—般为所述收尘孔板4高度的0.6倍至0.8倍。二是所述每件收尘孔板排上的八件收尘孔板4防风沟侧皆面向与所述八件收尘孔板4相邻的那一件后级电晕极框架5,以利于所述八件收尘孔板4捕集进入所述后级电场通道中的粉尘和减少二次扬尘。三是所述每个滤袋组下方皆设有挡风板25,以减小所述滤袋除尘区底部的气流上升速度;所述挡风板25的横截面呈一字形;当然,所述挡风板25的横截面也可以改为呈L字形或者V字形。
It is worth mentioning that there are three points, one of which is provided with a plurality of vent holes in the upper and middle portions of the dust collecting plate 4, and no vent holes are provided in the lower portion of the dust collecting plate 4 to increase the dust collecting holes. See Figure 4 for the dust collection area of the board 4. The size symbol h in Fig. 4 is the height of the opening area of the dust collecting plate 4; the height h of the opening area is generally 0.6 to 0.8 times the height of the dust collecting plate 4. Second, the eight sets of dust collecting holes on each of the dust collecting plate rows are facing the rear corona pole frame 5 adjacent to the eight pieces of dust collecting holes 4, It is advantageous for the eight pieces of the dust collecting plate 4 to collect the dust entering the electric field channel of the latter stage and reduce the secondary dust. Third, each of the filter bag sets is provided with a wind deflector 25 to reduce the airflow rising speed at the bottom of the filter bag dust removal zone; the wind deflector 25 has a cross section in a straight shape; The cross section of the wind deflector 25 may also be changed to an L shape or a V shape.
通过上述分析可知,本发明所提供的这种嵌入式电袋复合除尘器,不仅具有滤袋过滤风速高、收尘孔板4下部和后级电暈极框架5下部皆可在所述滤袋组下方收尘的特点,而且还具有二次扬尘少、滤袋清灰周期长、除尘效率高、滤袋使用寿命长和运行费用低的优点。
It can be seen from the above analysis that the embedded electric bag composite dust remover provided by the present invention has not only the filter bag filter wind speed, the lower portion of the dust collecting plate 4 and the lower portion of the rear corona pole frame 5 can be in the filter bag. The characteristics of dust collection under the group, but also have the advantages of less secondary dust, long filter bag cleaning cycle, high dust removal efficiency, long filter bag service life and low operating cost.
此外,需要说明三点,一是处于所述后级电场除尘区最外侧的那两排收尘孔板4可以被替换为两排不设通气孔的收尘板,以增大所述后级电场除尘区的收尘面积。二是在所述每排收尘孔板4上,任意相邻两件收尘孔板4之间的间隙等于30mm;流进所述后级电场通道上部和中部的部分烟气可以通过这些间隙进入所述滤袋除尘区;并且,为了适当增大所述收尘孔板4的收尘面积,所述相邻的两件收尘孔板4之间的间隙可以被扩大到60〜80mm甚至达到100mm以上,同时所述收尘孔板4的开孔率也被相应地减小,甚至被减小为零,即所述收尘孔板4实际上已经变成—不设通气孔的收尘板。当所述收尘孔板4已经被不设通气孔的收尘板替代时,流进所述后级电场通道上部和中部的烟气,主要是通过所述相邻的两件收尘板之间的间隙进入所述滤袋除尘区。
In addition, three points need to be explained. First, the two rows of dust collecting plates 4 at the outermost side of the electric field dust removing area of the latter stage can be replaced with two rows of dust collecting plates without vent holes to increase the rear stage. The dust collection area of the electric field dust removal area. Second, on each of the rows of dust collecting plates 4, the gap between any two adjacent dust collecting plates 4 is equal to 30 mm; part of the flue gas flowing into the upper and middle portions of the electric field channel of the latter stage can pass through the gaps. Entering the dust collection area of the filter bag; and, in order to appropriately increase the dust collection area of the dust collecting plate 4, the gap between the adjacent two pieces of the dust collecting plate 4 can be expanded to 60 to 80 mm or even When it reaches 100 mm or more, the opening ratio of the dust collecting plate 4 is also correspondingly reduced, or even reduced to zero, that is, the dust collecting plate 4 has actually become - no vent hole Dust board. When the dust collecting plate 4 has been replaced by a dust collecting plate without a vent hole, the flue gas flowing into the upper and middle portions of the electric field passage of the rear stage is mainly passed through the two adjacent pieces of the dust collecting plate. The gap between them enters the filter bag dust removal zone.
第二实施例
进一步地,在第一实施例中的每排滤袋6正下方,皆再设置一件设有十四根辅助电晕线261的辅助电暈极框架26,使每排收尘孔板4下部之两侧分别设置有互相平行的一件后级电暈极框架5和一件辅助电暈极框架26,以便利用这些收尘孔板4下部进行双面收尘,从而更进一步地降低所述滤袋除尘区的入口烟气含尘浓度,请参见图8和图9;然后再延长一点滤袋清灰周期,则可以更进一步地提高该除尘器的除尘效率、延长滤袋使用寿命、节约清灰能耗和降低该除尘器的运行费用。
Second Embodiment Further, in front of each row of the filter bags 6 in the first embodiment, an auxiliary corona pole frame 26 provided with fourteen auxiliary corona wires 261 is disposed, so that each row is dust-collected. A pair of rear-stage corona pole frames 5 and a piece of auxiliary corona pole frame 26 which are parallel to each other are respectively disposed on both sides of the lower portion of the orifice plate 4, so as to utilize the lower portions of the dust collecting orifice plates 4 for double-sided dust collection, thereby further To reduce the dust concentration of the inlet flue gas in the dust removal area of the filter bag, please refer to FIG. 8 and FIG. 9; and then extend the filter bag cleaning cycle to further improve the dust removal efficiency of the dust collector and extend the filter bag. Service life, saving energy consumption of cleaning and reducing the operating cost of the dust collector.
如图8和图9所示,所述每件辅助电晕极框架26的一侧设有一件辅助电暈极振打砧29,以便通过一套后级电晕极振打装置对辅助电暈极框架26进行振打清灰。各件辅助电晕极框架26吊挂在辅助电暈极吊梁28上,辅助电暈极吊梁28再通过辅助电暈极悬吊杆27悬吊在后级电暈极吊梁20上,并且各件辅助电暈极框架26下部皆与后级电暈极防摆框架21连接。
As shown in FIG. 8 and FIG. 9, one side of each of the auxiliary corona pole frames 26 is provided with an auxiliary corona pole anvil 29 for assisting corona through a set of rear corona pole rapping devices. The pole frame 26 is subjected to coring cleaning. Each of the auxiliary corona pole frames 26 is hung on the auxiliary corona pole beam 28, and the auxiliary corona pole beam 28 is suspended by the auxiliary corona pole suspension rod 27 on the rear corona pole beam 20. And the lower part of each auxiliary corona pole frame 26 is connected with the rear corona pole anti-swing frame 21.
值得注意的是,第二实施例中的V字形导流板3c之下端仅比所述滤袋组内的滤袋6底部低一点,以便位于前级电场除尘区下部的烟气直接冲入所述后级电场通道下部。
It should be noted that the lower end of the V-shaped baffle 3c in the second embodiment is only a little lower than the bottom of the filter bag 6 in the filter bag group, so that the flue gas located in the lower part of the pre-stage electric field dedusting zone directly enters the place. The lower part of the electric field channel of the latter stage.
此外,需要说明两点,一是为了提高本发明所提供的嵌入式电袋复合除尘器之处理烟气能力,可以在本发明中的嵌入式电袋复合除尘区后方,增设一个嵌入式电袋复合除尘区,并在两个嵌入式电袋复合除尘区之间设置一件内部检修走道;两个后级电场除尘区各配用一台高频高压电源,或者通过导线将两个后级电场除尘区内的后级电晕极连接在一起之后,两个后级电场除尘区共用一台高频高压电源。当然,同时应该增大壳体2的长度并增加一些零部件。二是本发明中的收尘孔板是通过轧机轧制成一定形状之后,譬如轧成C形极板,或者BE型极板或者ZT形极板,再在极板上部和中部开设通气孔而制成的。
In addition, two points need to be explained. First, in order to improve the smoke processing capability of the embedded electric bag composite dust remover provided by the present invention, an embedded electric bag may be added behind the embedded electric bag composite dust removal area in the present invention. a composite dust removal zone and an internal maintenance walkway between the two embedded electric bag composite dust removal zones; two post-stage electric field dust removal zones each equipped with a high-frequency high-voltage power supply, or two post-stage electric fields through the wires After the rear-stage corona poles in the dust-removing zone are connected together, the two rear-stage electric field dust-removing zones share a high-frequency high-voltage power source. Of course, at the same time, the length of the casing 2 should be increased and some parts added. Second, the dust collecting plate in the present invention is rolled into a certain shape by a rolling mill, for example, rolled into a C-shaped plate, or a BE-shaped plate or a Z-shaped plate, and a vent hole is formed in the upper and middle portions of the plate. Made of.
本发明中涉及的其它未说明部分与现有技术相同。
Other unexplained portions referred to in the present invention are the same as in the prior art.

Claims (10)

  1. 一种嵌入式电袋复合除尘器,包括壳体(2)和自前而后依次设置在壳体(2)内的前级电场除尘区及嵌入式电袋复合除尘区;所述前级电场除尘区包括复数件前级电晕极框架(8)和复数件前级收尘板(7)或者复数排前级收尘板(7);所述嵌入式电袋复合除尘区包括后级电场除尘区和滤袋除尘区;所述后级电场除尘区包括复数件后级电晕极框架(5)和复数件收尘孔板(4)或者复数排收尘孔板(4),所述每件后级电晕极框架(5)上设有若干根后级电晕线(51);所述滤袋除尘区包括复数个滤袋组;所述每件后级电晕极框架(5)两侧皆设置有一件收尘孔板(4)或者一排收尘孔板(4),两件收尘孔板(4)或者两排收尘孔板(4)之间的空间为一个后级电场通道;在所述任意相邻的两个后级电场通道之间均设置有一个滤袋组,所述每个滤袋组至少包括一排滤袋(6);所述每排滤袋(6)平行于或者基本上平行于所述后级电场通道;设置在所述收尘孔板(4)上的通气孔为所述后级电场通道内的烟气进入所述滤袋除尘区的气流通路,其特征在于:所述收尘孔板(4)高度和所述后级电晕线(51)高度皆至少比所述滤袋组内的滤袋(6)长度大两米,以利用所述滤袋组下方的空间进行静电除尘。An embedded electric bag composite dust remover comprises a casing (2) and a front-stage electric field dust-removing zone and an embedded electric bag composite dust-removing zone disposed in the casing (2) from the front to the rear; the front-stage electric field dust-removing zone The utility model comprises a plurality of pre-stage corona pole frames (8) and a plurality of pre-stage dust collecting plates (7) or a plurality of pre-stage dust collecting plates (7); the embedded electric bag composite dedusting zone comprises a rear-stage electric field dedusting zone And the filter bag dust removal zone; the rear stage electric field dust removal zone comprises a plurality of post-stage corona pole frames (5) and a plurality of dust collecting orifice plates (4) or a plurality of rows of dust collecting holes plates (4), each of which The rear corona pole frame (5) is provided with a plurality of rear corona wires (51); the filter bag dust removing region comprises a plurality of filter bag groups; each of the rear corona pole frames (5) The side is provided with a dust collecting plate (4) or a row of dust collecting plate (4), and the space between the two dust collecting plates (4) or the two rows of dust collecting plates (4) is a rear stage. An electric field channel; a filter bag group is disposed between the two adjacent second-stage electric field channels, and each filter bag group includes at least one row of filter bags (6); each of the filter bags ( 6) Parallel or substantially Parallel to the electric field channel of the rear stage; the vent hole disposed on the dust collecting plate (4) is an air flow path of the flue gas in the electric field channel of the rear stage entering the dust removing area of the filter bag, wherein: The height of the dust collecting plate (4) and the height of the rear corona wire (51) are at least two meters larger than the length of the filter bag (6) in the filter bag group to utilize the filter bag group below The space is electrostatically dusted.
  2. 根据权利要求1所述的嵌入式电袋复合除尘器,其特征在于:所述收尘孔板(4)的上部和中部皆设有若干个通气孔,所述收尘孔板(4)下部则不设通气孔,以增大所述收尘孔板(4)的收尘面积。The embedded electric bag composite dust remover according to claim 1, wherein the upper and middle portions of the dust collecting plate (4) are provided with a plurality of vent holes, and the lower portion of the dust collecting plate (4) There is no vent hole to increase the dust collecting area of the dust collecting plate (4).
  3. 根据权利要求2所述的嵌入式电袋复合除尘器,其特征在于:所述通气孔形状呈圆形或者矩形或者三角形。The embedded electric bag composite dust remover according to claim 2, wherein the vent hole has a circular shape or a rectangular shape or a triangular shape.
  4. 根据权利要求1所述的嵌入式电袋复合除尘器,其特征在于:所述每排收尘孔板(4)至少包括两件收尘孔板(4);所述收尘孔板(4)的防风沟侧皆面向与所述收尘孔板(4)相邻的那一件后级电晕极框架(5),以利于所述各件收尘孔板(4)捕集进入所述后级电场通道中的粉尘和减少二次扬尘。The embedded electric bag composite dust collector according to claim 1, wherein each of the rows of dust collecting holes (4) comprises at least two pieces of dust collecting holes (4); and the collecting holes (4) The windshield side faces the rear corona pole frame (5) adjacent to the dust collecting plate (4) to facilitate the collection of the dust collecting plate (4) The dust in the electric field channel of the latter stage is described and the secondary dust is reduced.
  5. 根据权利要求4所述的嵌入式电袋复合除尘器,其特征在于:所述任意相邻两件收尘孔板(4)之间的间隙大于或等于30mm;所述后级电场通道上部和中部的部分烟气可以通过所述相邻两件收尘孔板(4)之间的间隙进入所述滤袋除尘区。
    The embedded electric bag composite dust collector according to claim 4, wherein a gap between the adjacent two pieces of dust collecting holes (4) is greater than or equal to 30 mm; Part of the flue gas in the middle portion can enter the filter bag dust removal zone through the gap between the adjacent two pieces of dust collecting holes (4).
  6. 根据权利要求4所述的嵌入式电袋复合除尘器,其特征在于:所述收尘孔板(4)中间的平直部分至少设有一个凹凸槽,以加强所述收尘孔板(4)刚度。
    The embedded electric bag composite dust remover according to claim 4, wherein the flat portion in the middle of the dust collecting plate (4) is provided with at least one concave-convex groove to reinforce the dust collecting plate (4). ) Stiffness.
  7. 根据权利要求4所述的嵌入式电袋复合除尘器,其特征在于:所述收尘孔板(4)高度等于或者接近于所述前级收尘板(7)高度,所述后级电暈线(51)高度等于或者接近于安装在所述前级电晕极框架(8)上的前级电晕线(81)高度,以便充分利用所述滤袋组下方的空间进行静电除尘。
    The embedded electric bag composite dust remover according to claim 4, wherein the height of the dust collecting plate (4) is equal to or close to the height of the front stage dust collecting plate (7), and the rear stage electric The halo line (51) has a height equal to or close to the height of the front corona wire (81) mounted on the front stage corona pole frame (8) in order to fully utilize the space below the filter bag set for electrostatic precipitator.
  8. 根据权利要求1中所述的嵌入式电袋复合除尘器,其特征在于:在与所述收尘孔板(4)相邻的每排滤袋(6)正下方均设置有一件辅助电晕极框架(26);所述每件辅助电暈极框架(26)上设有若干根辅助电暈线(261);所述辅助电晕极框架(26)与所述后级电暈极框架(5)及所述收尘孔板(4)相互平行,以便利用所述收尘孔板(4)下部进行双面收尘。
    The embedded electric bag composite dust collector according to claim 1, characterized in that: an auxiliary corona is disposed directly under each of the filter bags (6) adjacent to the dust collecting plate (4) a pole frame (26); each of the auxiliary corona pole frames (26) is provided with a plurality of auxiliary corona wires (261); the auxiliary corona pole frame (26) and the rear corona pole frame (5) and the dust collecting plate (4) are parallel to each other so as to perform double-side dust collection by using the lower portion of the dust collecting plate (4).
  9. 根据权利要求1所述的嵌入式电袋复合除尘器,其特征在于:所述每个滤袋组下方皆设有挡风板(25),以减小所述滤袋除尘区底部的气流上升速度;所述挡风板(25)的横截面呈一字形或者L字形或者V字形。
    The embedded electric bag composite dust remover according to claim 1, wherein each of the filter bag sets is provided with a wind deflector (25) to reduce the airflow rise at the bottom of the filter bag dust removal zone. Speed; the cross section of the wind deflector (25) is in a shape of a letter or an L shape or a V shape.
  10. 根据权利要求1所述的嵌入式电袋复合除尘器,其特征在于:所述前级电场除尘区和所述后级电场除尘区均采用高频高压电源。
    The embedded electric bag composite dust remover according to claim 1, wherein the front stage electric field dedusting area and the rear stage electric field dedusting area are both high frequency and high voltage power sources.
PCT/CN2014/076862 2013-05-07 2014-05-06 Embedded-type electrified bag composite dust collector WO2016029333A1 (en)

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