CN105921276A - Fine particle rotational flow type electric agglomeration dust removing and collecting device - Google Patents
Fine particle rotational flow type electric agglomeration dust removing and collecting device Download PDFInfo
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- 239000010419 fine particle Substances 0.000 title claims abstract description 31
- 239000000428 dust Substances 0.000 title claims abstract description 29
- 238000005054 agglomeration Methods 0.000 title abstract 2
- 230000002776 aggregation Effects 0.000 title abstract 2
- 239000002245 particle Substances 0.000 claims abstract description 50
- 230000005684 electric field Effects 0.000 claims abstract description 22
- 230000015271 coagulation Effects 0.000 claims abstract description 17
- 238000005345 coagulation Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009297 electrocoagulation Methods 0.000 claims description 27
- 239000012717 electrostatic precipitator Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000012716 precipitator Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- -1 bag filters Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
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Abstract
Description
技术领域 technical field
本发明涉及一种微细颗粒旋流式电凝并的除尘收集装置，涉及环境工程技术领域，特别是脱除火电厂燃煤粉尘中可吸入颗粒物，可以获得更好的捕集效果，还可以用于工业生产中的除尘收集，减少环境污染。 The invention relates to a fine particle swirling electrocoagulation dust removal device, which relates to the technical field of environmental engineering, especially for the removal of inhalable particulate matter in coal-fired dust in thermal power plants, which can obtain better trapping effects and can also be used Dust collection in industrial production to reduce environmental pollution.
背景技术 Background technique
微细颗粒的主要来源，是日常发电、工业生产、汽车尾气排放等过程中经过燃烧而排放的残留物，大多含有重金属等有毒物质，对人体健康带来危害以及污染大气。大量微细颗粒聚集成烟尘，现有的烟尘去除方法主要是利用电除尘器、布袋除尘器和水除尘器等除尘设备，尽管这些设备对于烟尘的收集效率高达99.9%，但是对于0.1-1微米的微细颗粒，除尘效率不足85%，而这些微细颗粒正是对于人体和环境带来巨大危害的原因。对微细颗粒进行凝并，形成粒度较大的聚集体可以提高除尘器的除尘效率，尤其可以提高对微细颗粒的收集效率。 The main source of fine particles is the residues discharged from combustion during daily power generation, industrial production, and vehicle exhaust emissions. Most of them contain toxic substances such as heavy metals, which are harmful to human health and pollute the atmosphere. A large number of fine particles gather into soot. The existing soot removal methods mainly use dust removal equipment such as electrostatic precipitators, bag filters, and water precipitators. Although these devices have a collection efficiency of For fine particles, the dust removal efficiency is less than 85%, and these fine particles are the cause of great harm to the human body and the environment. Coagulation of fine particles to form aggregates with larger particle size can improve the dust removal efficiency of the dust collector, especially the collection efficiency of fine particles.
凝并方法主要有热凝并、声凝并和电凝并，综合考虑技术复杂性和经济消耗程度，电凝是一种较可行的凝并方法。电凝并是通过对微细颗粒进行预荷电，增加颗粒之间的凝并程度，使其聚集成大粒度聚集体，提高微细颗粒除尘效率。现有的电凝并设备中，微细颗粒在荷电阶段不能达到荷电充分，并且在凝并过程中，微细颗粒不能充分碰撞，所以凝并的颗粒粒度达不到收尘要求，导致微细颗粒收尘效率较低。 The coagulation methods mainly include thermal coagulation, acoustic coagulation and electrocoagulation. Considering the technical complexity and economic consumption, electrocoagulation is a more feasible coagulation method. Electrocoagulation is to increase the degree of coagulation between particles by pre-charging the fine particles, so that they can be aggregated into large-size aggregates and improve the dust removal efficiency of fine particles. In the existing electrocoagulation equipment, the fine particles cannot be fully charged during the charging stage, and during the coagulation process, the fine particles cannot fully collide, so the particle size of the coagulated particles cannot meet the dust collection requirements, resulting in fine particles The dust collection efficiency is low.
发明内容 Contents of the invention
为了克服上述现有技术的不足，本发明的目的提供了一种微细颗粒旋流式电凝并的除尘收集装置。 In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a fine particle cyclone electrocoagulation and dust collection device.
本发明所采用的技术方案为：一种微细颗粒旋流式电凝并的除尘收集装置，电凝并装置安装于电除尘器的进料口，其特征在于，所述电凝并装置包括顺序连接的摩擦带电装置和凝并装置，凝并装置与电除尘器连接；所述摩擦带电装置包括壳体、气流颗粒入口、带正极电晕的芒刺电极和摩擦棒；壳体为圆柱形封闭式结构，其上部设有气流颗粒入口，入口方向为圆柱形壳体的切向方向；所述芒刺电极和摩擦棒设于壳体内，芒刺电极和摩擦棒分别沿壳体的轴向和周向交错设置，芒刺电极和摩擦棒的一端与壳体内壁固连，另一端平行指向壳体的中心；所述凝并装置由至少一组带有相反方向高压电场的文丘里管首尾相接组成；位于凝并装置顶端的文丘里管设有漏斗状连接头，连接头的开口端与壳体连接；位于凝并装置底端的文丘里管连接有弧形管道，弧形管道的端部设置为漏斗状，并与电除尘器的入料口连接；工作过程中，颗粒在气流带动下，沿切向方向进入壳体，在其内壁面形成环形流动，颗粒与安装在壳体内壁面的摩擦棒进行摩擦碰撞，并在芒刺电极电晕作用下强化荷电，荷电颗粒在高压电场中因受到方向相反的电场力作用，荷电颗粒产生碰撞而凝并，凝并后的大颗粒通过管道送入电除尘器中进行收集除尘。 The technical solution adopted in the present invention is: a fine particle swirl type electrocoagulation and dust collection device, the electrocoagulation device is installed at the feed port of the electrostatic precipitator, and it is characterized in that the electrocoagulation device includes a sequence Connected friction electrification device and coalescence device, the condensation device is connected with the electrostatic precipitator; the friction electrification device includes a shell, an airflow particle inlet, a barbed electrode with a positive corona and a friction rod; the shell is cylindrical and closed type structure, the upper part of which is provided with an airflow particle inlet, and the inlet direction is the tangential direction of the cylindrical shell; Circumferentially staggered, one end of the barbed electrode and the friction rod is fixedly connected to the inner wall of the shell, and the other end is parallel to the center of the shell; the coagulation device is composed of at least one set of Venturi tubes with high-voltage electric fields in opposite directions. The Venturi tube at the top of the coalescing device is provided with a funnel-shaped connector, and the open end of the connector is connected to the shell; the Venturi tube at the bottom of the coalescing device is connected with an arc-shaped pipe, and the end of the arc-shaped pipe It is set in the shape of a funnel and connected to the feed port of the electrostatic precipitator; during the working process, the particles are driven by the airflow and enter the shell along the tangential direction, forming a circular flow on the inner wall of the shell. The friction rod performs friction and collision, and the charging is strengthened under the corona action of the prickly electrode. The charged particles are subjected to the electric field force in the opposite direction in the high-voltage electric field, and the charged particles collide and coagulate, and the large particles after coagulation It is sent to the electrostatic precipitator through the pipeline for collection and dust removal.
位于同一层的芒刺电极和摩擦棒沿壳体周向依次以九十度交错排列。 The barbed electrodes and friction rods located on the same layer are arranged alternately at 90 degrees along the circumference of the casing.
所述芒刺电极的长度设置以其所产生的电晕能够充满壳体的空间为准。 The length of the barbed electrode is set so that the corona generated by it can fill the space of the shell.
每个文丘里管的两侧安装极性相反的电极板，且相邻两个文丘里管位于同一侧的电极板极性相反，形成电场方向相反的两段电场。 Electrode plates with opposite polarities are installed on both sides of each Venturi tube, and the polarity of the electrode plates on the same side of two adjacent Venturi tubes is opposite, forming two sections of electric fields with opposite electric field directions.
所述文丘里管通过法兰与壳体以及电除尘器连接，相邻文丘里管之间通过法兰连接。 The Venturi tubes are connected to the casing and the electrostatic precipitator through flanges, and adjacent Venturi tubes are connected through flanges.
与现有技术相比，本发明的有益效果是：微细颗粒在气流携带作用下，沿切向进入封闭圆柱壳体后做竖直向下的旋流运动，由于芒刺电极和摩擦棒以九十度角均匀交错且层叠分布在壳体内壁面，使颗粒运动过程中经过芒刺电极电晕区，同时与摩擦棒进行摩擦碰撞，颗粒可以充分的进行电晕荷电以及摩擦荷电，从而提高了颗粒荷电效果。带电颗粒在进入文丘里管后，随着管道截面积减小，增加了颗粒浓度及相互碰撞次数。在管道两侧安装了带电极性相反的电极板，形成了方向相反的两段电场。荷电颗粒在电场力作用下，产生碰撞而凝并，凝并后的大颗粒通过管道送入电除尘器中进行收集除尘，提高了除尘效率。 Compared with the prior art, the beneficial effect of the present invention is: under the action of the air flow, the fine particles enter the closed cylindrical shell tangentially and do a vertical downward swirling motion, because the prickly electrode and the friction rod are separated by nine The ten-degree angles are evenly staggered and stacked on the inner wall of the shell, so that the particles pass through the corona area of the prickly electrode during movement, and at the same time rub against the friction rod, and the particles can fully carry out corona charging and friction charging, thereby improving particle charging effect. After the charged particles enter the Venturi tube, as the cross-sectional area of the tube decreases, the particle concentration and the number of collisions increase. Electrode plates with opposite polarities are installed on both sides of the pipeline to form two sections of electric fields in opposite directions. Under the action of the electric field force, the charged particles collide and coagulate, and the coagulated large particles are sent to the electrostatic precipitator through the pipeline for collection and dust removal, which improves the dust removal efficiency.
附图说明 Description of drawings
图1为一种微细颗粒旋流式电凝并的除尘收集装置示意图。 Fig. 1 is a schematic diagram of a fine particle cyclone electrocoagulation and dust collection device.
图2为一种微细颗粒旋流式电凝并的除尘收集装置的电凝并装置结构示意图。 Fig. 2 is a schematic diagram of the electrocoagulation device structure of a fine particle cyclone electrocoagulation dust collection device.
图3为一种微细颗粒旋流式电凝并的除尘收集装置电凝并装置俯视图。 Fig. 3 is a top view of a fine particle cyclone electrocoagulation and dust collection device electrocoagulation.
附图中各零部件的标记如下：1、电凝并装置，2、电除尘器，3、壳体，4、气流颗粒入口，5、芒刺电极，6、摩擦棒，7、文丘里管，8、第一段正极板，9、第二段负极板，10、管道，11、第二段正极板，12、第一段负极板。 The marks of the parts in the drawings are as follows: 1. Electrocoagulation device, 2. Electrostatic precipitator, 3. Shell, 4. Airflow particle inlet, 5. Prickly electrode, 6. Friction rod, 7. Venturi tube , 8, the first section of the positive plate, 9, the second section of the negative plate, 10, the pipeline, 11, the second section of the positive plate, 12, the first section of the negative plate.
具体实施方式 detailed description
下面结合附图对本发明进行详细说明。 The present invention will be described in detail below in conjunction with the accompanying drawings.
图1为一种微细颗粒旋流式电凝并的除尘收集装置示意图，电凝并装置1位于电除尘器2前端，烟尘中的微细颗粒在电凝并装置1进行处理后，微细颗粒聚集成粒度较大颗粒，可以通过电除尘器2进行收集。 Figure 1 is a schematic diagram of a fine particle cyclone electrocoagulation and collection device. The electrocoagulation device 1 is located at the front end of the electrostatic precipitator 2. After the fine particles in the smoke are processed by the electrocoagulation device 1, the fine particles gather into Particles with larger particle size can be collected by electrostatic precipitator 2.
电凝并装置1安装于电除尘器2的进料口，所述电凝并装置1包括顺序连接的摩擦带电装置和凝并装置，凝并装置与电除尘器1连接；所述摩擦带电装置包括壳体3、气流颗粒入口4、带正极电晕的芒刺电极5和摩擦棒6；壳体3为圆柱形封闭式结构，其上部设有气流颗粒入口4，入口方向为圆柱形壳体3的切向方向；所述芒刺电极5和摩擦棒4设于壳体3内，芒刺电极5和摩擦棒6分别沿壳体3的轴向和周向交错设置，芒刺电极5和摩擦棒4的一端与壳体3内壁固连，另一端平行指向壳体3的中心；所述凝并装置由至少一组带有相反方向高压电场的文丘里管7首尾相接组成；位于凝并装置顶端的文丘里管7设有漏斗状连接头，连接头的开口端与壳体3通过法兰连接，相邻文丘里管7通过法兰连接；位于最下端的文丘里管7的底端设有弧形管道10，弧形管道10的端部设置为漏斗状，并与电除尘器1的入料口通过法兰连接；工作过程中，颗粒在气流带动下，沿切向方向进入壳体3，在其内壁面形成环形流动，颗粒与安装在壳体3内壁面的摩擦棒6进行摩擦碰撞，并在芒刺电极5电晕作用下强化荷电，荷电颗粒在高压电场中因受到方向相反的电场力作用，荷电颗粒产生碰撞而凝并，凝并后的大颗粒通过管道送入电除尘器2中进行收集除尘。 The electrocoagulation device 1 is installed at the feed port of the electrostatic precipitator 2, and the electrocoagulation device 1 includes a friction charging device and a coagulation device connected in sequence, and the coagulation device is connected with the electrostatic precipitator 1; the friction charging device It includes a shell 3, an airflow particle inlet 4, a prickly electrode 5 with a positive corona and a friction rod 6; the shell 3 is a cylindrical closed structure, and its upper part is provided with an airflow particle inlet 4, and the direction of the entrance is a cylindrical shell 3 in the tangential direction; the barbed electrodes 5 and friction rods 4 are arranged in the housing 3, and the barbed electrodes 5 and friction bars 6 are arranged alternately along the axial and circumferential directions of the housing 3 respectively, and the barbed electrodes 5 and One end of the friction rod 4 is fixedly connected to the inner wall of the shell 3, and the other end is parallel to the center of the shell 3; the coagulation device is composed of at least one group of Venturi tubes 7 connected end-to-end with high-voltage electric fields in opposite directions; And the Venturi tube 7 at the top of the device is provided with a funnel-shaped connector, the open end of the connector is connected to the housing 3 by a flange, and the adjacent Venturi tube 7 is connected by a flange; the bottom of the Venturi tube 7 at the lowermost end There is an arc-shaped pipe 10 at the end, and the end of the arc-shaped pipe 10 is set in a funnel shape, and is connected with the feed port of the electrostatic precipitator 1 through a flange; during the working process, the particles are driven by the airflow and enter in the tangential direction. The shell 3 forms an annular flow on its inner wall, and the particles rub against the friction rod 6 installed on the inner wall of the shell 3, and the charge is strengthened under the corona action of the prickly electrode 5, and the charged particles are in the high-voltage electric field Due to the electric field force in the opposite direction, the charged particles collide and coagulate, and the coagulated large particles are sent to the electrostatic precipitator 2 through the pipeline for collection and dust removal.
如图3所示，位于同一层的芒刺电极5和摩擦棒6沿壳体3周向依次以九十度交错排列。所述芒刺电极5的长度设置以其所产生的电晕能够充满壳体3的空间为准。 As shown in FIG. 3 , the barbed electrodes 5 and friction rods 6 located on the same layer are arranged alternately at ninety degrees along the circumferential direction of the casing 3 . The length of the barbed electrode 5 is set so that the corona generated by it can fill the space of the casing 3 .
每个文丘里管7的两侧安装极性相反的电极板，且相邻两个文丘里管7位于同一侧的电极板极性相反，形成电场方向相反的两段电场。如图2所示，首尾相连的两段文丘里管7，上一段段文丘里管7的一侧设置第一段正极板8，其相对侧对称设置第一段负极板12；下一段文丘里管7的一侧对应第一段正极板8的下方设置第二段负极板9，另一侧对应第一段负极板12的下方设置第二段正极板11。 Electrode plates with opposite polarities are installed on both sides of each Venturi tube 7 , and the polarity of the electrode plates on the same side of two adjacent Venturi tubes 7 is opposite, forming two sections of electric fields with opposite electric field directions. As shown in Figure 2, two sections of Venturi tubes 7 connected end to end, the first section of positive plate 8 is arranged on one side of the upper section of Venturi tube 7, and the first section of negative electrode plate 12 is symmetrically arranged on the opposite side; One side of the tube 7 corresponds to the first section of the positive plate 8 below the second section of the negative plate 9 , and the other side corresponds to the bottom of the first section of the negative plate 12 and the second section of the positive plate 11 .
颗粒在气流携带作用下，通过气流颗粒入口4沿切向方向进入圆柱形壳体3中，颗粒在壳体内壁面旋流运动过程中， 在芒刺电极5的电晕作用下颗粒荷电，同时还可以与摩擦棒6碰撞而带电。带电颗粒进入圆柱形壳体3底部相连接的文丘里管7后，由于管道截面减小，颗粒浓度增加使带电颗粒更加充分接触。因电极板安装方式不同导致第一段电场、第二段电场方向相反，当带电颗粒在通过两端电场时，受到方向相反的电场力作用，异性带电颗粒产生碰撞而凝并。形成的大颗粒通过管道10进入电除尘器2中进行脱除。 Particles are carried by the airflow and enter the cylindrical shell 3 through the airflow particle inlet 4 along the tangential direction. During the swirling movement of the particles on the inner wall of the shell, the particles are charged under the corona action of the prickly electrode 5, and at the same time It can also collide with the friction rod 6 to be charged. After the charged particles enter the Venturi tube 7 connected to the bottom of the cylindrical shell 3, due to the reduced cross section of the tube, the concentration of the particles increases so that the charged particles can fully contact. The direction of the first electric field and the second electric field are opposite due to the different installation methods of the electrode plates. When the charged particles pass through the electric fields at both ends, they are subjected to the electric field force in the opposite direction, and the opposite charged particles collide and coagulate. The formed large particles enter the electrostatic precipitator 2 through the pipeline 10 for removal.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106178799A (en) * | 2016-09-13 | 2016-12-07 | 成都创慧科达科技有限公司 | A kind of thermal power plant environment-protective circulating dust arrester |
| CN107138016A (en) * | 2017-05-08 | 2017-09-08 | 浙江大学 | Based on many particulate matter coalescence reunion intensifying devices promoted and method |
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| CN111604176A (en) * | 2020-04-23 | 2020-09-01 | 中国矿业大学 | A recyclable cyclone electrocoagulation and industrial dust removal and environmental protection device and method |
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| CN106178799A (en) * | 2016-09-13 | 2016-12-07 | 成都创慧科达科技有限公司 | A kind of thermal power plant environment-protective circulating dust arrester |
| CN107138016A (en) * | 2017-05-08 | 2017-09-08 | 浙江大学 | Based on many particulate matter coalescence reunion intensifying devices promoted and method |
| CN107349729A (en) * | 2017-06-29 | 2017-11-17 | 苏州艾特斯环保设备有限公司 | A kind of electrostatic charged spray method |
| CN109967239A (en) * | 2017-12-27 | 2019-07-05 | 宁波方太厨具有限公司 | A kind of microparticle purification device based on electric coagulating technique |
| CN109967239B (en) * | 2017-12-27 | 2023-11-17 | 宁波方太厨具有限公司 | Microparticle purifier based on electrocoagulation technology |
| CN108787169A (en) * | 2018-07-25 | 2018-11-13 | 安徽卓煌机械设备有限公司 | A kind of sieve-board type finished ground cement electric dust collecting means |
| CN109916789A (en) * | 2019-01-29 | 2019-06-21 | 黑龙江科技大学 | A low concentration and small particle size dust detection device based on electrostatic induction |
| CN109883910A (en) * | 2019-01-29 | 2019-06-14 | 黑龙江科技大学 | A pre-charged electrostatic induction dust concentration measuring device |
| CN111604176A (en) * | 2020-04-23 | 2020-09-01 | 中国矿业大学 | A recyclable cyclone electrocoagulation and industrial dust removal and environmental protection device and method |
| CN111604176B (en) * | 2020-04-23 | 2021-10-29 | 中国矿业大学 | A recyclable cyclone electrocoagulation and industrial dust removal and environmental protection device and method |
| CN112285004A (en) * | 2020-09-25 | 2021-01-29 | 台州市中心医院（台州学院附属医院） | Biosafety device for flow cytometer |
| CN112285004B (en) * | 2020-09-25 | 2023-10-10 | 台州市中心医院（台州学院附属医院） | Biosafety device for flow cytometry |
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