WO2014085949A1 - 一种刚性阳极板表面水膜布置工艺及装置 - Google Patents

一种刚性阳极板表面水膜布置工艺及装置 Download PDF

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Publication number
WO2014085949A1
WO2014085949A1 PCT/CN2012/001710 CN2012001710W WO2014085949A1 WO 2014085949 A1 WO2014085949 A1 WO 2014085949A1 CN 2012001710 W CN2012001710 W CN 2012001710W WO 2014085949 A1 WO2014085949 A1 WO 2014085949A1
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Prior art keywords
anode plate
plate
water
anode
water film
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PCT/CN2012/001710
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English (en)
French (fr)
Inventor
马春元
常景彩
Original Assignee
山东大学
曲阜山大能源环境有限公司
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Application filed by 山东大学, 曲阜山大能源环境有限公司 filed Critical 山东大学
Priority to US13/981,134 priority Critical patent/US8876950B2/en
Publication of WO2014085949A1 publication Critical patent/WO2014085949A1/zh

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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
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/53—Liquid, or liquid-film, 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
    • B03C3/78—Cleaning the electrodes by washing

Definitions

  • the invention belongs to the field of air pollutants treatment, and particularly relates to a surface water film forming process and device based on a rigid anode plate of an electrostatic precipitator.
  • electrostatic precipitators mainly including dry electrostatic precipitators and wet electrostatic precipitators.
  • Electrostatic worms 3 still have fine particles. Fly ash enters the ring, causing pollution and affecting human health.
  • the operation efficiency of the dust collector such as the nature of the flue gas, the operating conditions, and the condition of the equipment.
  • the “secondary carrying" caused by the traditional mechanical vibrating cleaning method is super fine. It is one of the original H which is less efficient in removing J particles.
  • the wet electrostatic precipitator adopts the water film cleaning method, which can effectively avoid the secondary dust rise and has high corona current and obvious particle coagulation effect. It has obvious technical advantages in controlling the emission of ultrafine particles, and is gradually in the fire. Applied in power plants.
  • the current wet electrostatic precipitator generally adopts a solid anode plate. Under the same flushing water quantity, the water film is easy to form a channel on the surface of the anode plate due to the flatness deviation and surface tension of the rigid material itself, so that the dust is collected.
  • the invention adopts a special surface coating pretreatment process based on a solid anode plate generally used in an electrostatic precipitator, and designs a water film arrangement structure corresponding thereto, and proposes a water film layout process and device for a rigid anode plate surface. .
  • the device is composed of a clamping plate fastening bolt, a suspension splint, a water distribution pipe, a guide vane, a male shuttle plate fastening bolt, an anode plate, a lower plate positioning steel plate, and a lower plate plate Fixed shaft and positioning steel plate fastening bolts.
  • the utility model is characterized in that: the surface of the anode plate is pretreated by a hydrophilizing agent: a 45° guide vane is twisted on the anode plate, and a corrugated flow guiding groove with a degree of 5 ⁇ 8 mm is rolled at the front end of the anode plate, and the stainless steel tube is cross welded.
  • the lower part of the stainless steel pipe is densely packed with water holes; the upper part of the anode is connected with the water pipe through the hanging clamp, the lower part of the anode plate is fixed on the lower fixed beam of the anode; the anode plate of the same width is used to form the electrostatic field channel .
  • a water film arrangement process for a surface of a solid anode plate characterized in that: the surface of the anode plate is pretreated by a hydrophilizing agent to increase the surface energy, and the liquid can be rapidly spread from different parts on the surface of the anode plate to form a thin uniform water film; The water flows out of the water distribution pipe through the 45° twisted guide vane into the anode plate, and completes the uniform flushing water volume; after a uniform distribution, the body enters the position from the front and back sides of the anode plate.
  • the water is evenly arranged on the upper part of the anode plate, and is washed into water 3 ⁇ 2; the anode plate 3 ⁇ 4 is coated on the surface to prescribe the self-cleaning property, and the dust layer is attached on the anode surface. It is not strong enough to be completely washed away by the surface water and pancreas, and the flue gas flow and the water film are in contact with each other to generate friction, and the water film rushing and ashing force is enhanced.
  • the anode plate of the invention adopts a solid anode plate pretreated by surface coating, and the anode plate is twisted with a guide vane of 45°, and the front end of the anode plate adopts a rolled width of 5 ⁇ 8 mm corrugated guide groove, and the upper part of the anode. It is connected to the cloth pipe by a six-piece suspension clamp.
  • the lower part of the anode plate is fixed on the lower fixed beam of the anode, and the stainless steel pipe is cross-welded to form a mesh water pipe network, and the water pipe is densely distributed at the lower part of the water pipe and connected with the external process water tank, and the flow rate is controlled by the PLC.
  • the anode plate of the same width is used to form an electrostatic field channel, and the upper and lower sides of the discharge electrode are suspended by the upper and lower insulation boxes and insulated from the casing, and a ash bucket is arranged at the lower part of the anode plate.
  • a water film layout process for a rigid anode plate surface mainly comprising:
  • the water-stained water sluice flows out through the 45° twisted guide 3 ⁇ 4 blade into the upper part of the plucking cymbal, and completes the uniform distribution of the punching weight; after a uniform distribution of liquid from the front and back of the anode upper part into the anode plate Inside the corrugated guide trough at the front end. Evenly arrange the water on the upper part of the anode plate to complete the second uniform distribution of the flushing water ft.
  • the two equalizing process can achieve uniform water surface and pancreas on the surface of the anode plate under the condition of small water supply rate. Rapid formation
  • the anode plate is self-cleaning by surface pretreatment, and the dust layer adheres 'on the surface of the anode', which is easy to be completely ash by surface water, and the flue gas passes through the sheet anode at a speed of 1 ⁇ 5m s. Pulling, the airflow and the water film are in contact with each other to generate friction, enhance the water film to wash the ash, and eliminate the "one-flying" existing in the traditional mechanical ash.
  • the specific operation process is as follows: the flue gas is homogenized through the inlet guide vanes of the casing and then enters the wet electrostatic precipitator; the water film arrangement on the surface of the rigid anode plate, the support beam on the anode plate, and the trapezoidal plate on the support beam are positioned on the upper plate of the anode
  • the water volume of each anode plate module is adjusted by the PLC; the film liquid uses the hydrophilic layer on the surface of the plate to accelerate the spreading speed of the liquid on the surface of the plate, and promote the rapid formation of a uniform thin film on the surface of the plate;
  • the center is placed on the discharge electrode, and the anode plate and the discharge electrode constitute a high-voltage non-uniform electric field, and the discharge electrode ionizes the gas in the vicinity thereof to form charged ions and electrons, colliding with the charge of the fine particles, and the fine particles reach the surface of the anode plate under the action of the electrostatic field.
  • the water is attached to the anode plate.
  • the fine particles absorb moisture and agglomerate to form irregular particles with larger particle size, and form adsorption effect adsorption.
  • the final settling dust forms a dense accumulation mode, effectively preventing the air flow two Flushing and carrying;
  • the flue gas passes through the electrostatic field channel composed of the anode plate at a speed of l ⁇ 5m s, and the gas flow and the water film are in downstream contact to provide a frictional force along the water film.
  • the hydrophilization of the surface of the anode plate gives the surface self-cleaning property. Reduce the adhesion of the dust layer on the surface of the anode, the adhesion of the dust layer is not easy to be washed away by the surface water film to achieve complete cleaning, avoiding Free "two flying".
  • the water film layout process and device for the surface of the rigid anode plate proposed by the invention can realize the uniform distribution of water film, low water consumption, continuous electrification flushing and fly ash on the surface of the traditional anode plate by surface pretreatment of the solid anode plate. Flush completely without secondary flying, long-term continuous and reliable operation.
  • the invention Compared with the traditional anode plate water film arranging process, the invention has the advantages of excellent corrosion resistance, small flushing water volume, uniform surface water film, stable electric field, continuous electrification washing, safe and reliable operation, and at the same time realizes fly ash particles. Effectively removed and thoroughly ashed. It meets the requirements of air pollutant emission standards for thermal power plants and has broad market application prospects.
  • FIG. 1 is a schematic view of a wet electrostatic precipitator structure
  • FIG. 2 is a schematic cross-sectional view of a wet electrostatic precipitator AA
  • FIG. 3 is a front view of a rigid anode plate surface water film arranging device
  • FIG. 4 is a rigid anode plate surface water pancreas arrangement device.
  • 1 is a ash bucket
  • 2 is a casing
  • 3 is an anode water film arrangement device
  • 4 is an upper insulation box
  • 5 is a cathode line
  • 6 is a spray pipe
  • 7 is an upper head
  • 8 is a sewage connection pipe
  • 9 For the lower insulation box, 10 for the manhole door, 11 for the flue gas outlet, 12 for the splint fastening bolt, 13 for the suspension splint, "for the cloth hose, 15 for the guide vane, 16 for the anode plate fastening bolt, 17 is the anode plate, 18 is the lower plate positioning steel plate, 19 is the lower plate fixed shaft, 20 is the positioning steel plate fastening bolt, and 21 is the corrugated guide groove.
  • the flue gas is homogenized by the upper head 7 and then enters the filling body 2.
  • the smoke first flows through the 6 spray pipe layer, passes through the cathode wire 5 suspended by the upper insulating box 4, and enters the pinned plate 12 by the splint.
  • I-beam form the entire housing frame; I-beam constitutes the support beam on the anode plate, the fixed anode plate frame:
  • the anode plate uses the traditional anode plate material, and the surface passes through the addition of hydrophilic
  • the agent makes the surface hydrophilic; the deflector blade is twisted at 45° on the upper part of the anode, and the water volume is uniformly distributed once, and the well prevents the electric field from being unstable due to the liquid spray: the upper part of the anode pole is rolled with wide skin:) ⁇ Smm corrugated guide groove, the liquid is filled in a uniform arrangement in the corrugated groove; ⁇ somm stainless steel tube is horizontally and vertically The interval
  • the cloth water is cut into the water hole of the ⁇ 1 ⁇ 2 ⁇ cloth and connected with the external process water tank.
  • the flow rate is controlled by PLC;
  • the six suspension clamps are connected with the ⁇ 50 round pipe; the lower part of the suspension clamp and the anode plate are connected by three M16 bolts; the lower part of each anode plate is fixed on the lower anode fixed beam by four M20 bolts;
  • the housing is welded to form a supporting device to support the insulating box; the anode plates of the same width form an electrostatic field channel: the upper and lower sides of the discharge electrode are suspended by the upper and lower insulating boxes and insulated from the casing: 1200X 800mm is opened on the casing
  • the manhole door is used to facilitate the access of the maintenance personnel; the ash bucket is arranged in the lower part of the anode plate, and the gray water mixture is discharged by the sewage pipe, enters the gray water treatment system, and the water is recycled.
  • Yang 3 ⁇ 4 plate ⁇ 7 and cathode line 5 maintain a fixed pole spacing and form a stable non-uniform high-voltage electric field, the cathode wire 5 is suspended from the upper insulating box 4 and the lower insulating box 9 and insulated from the casing to prevent leakage, short circuit, etc. : When there is an operation failure of the device, the maintenance personnel's manhole door 10 is inspected and repaired.
  • the cathode line 5 ionizes the surrounding gas, generating negative ions and electrons, and After the particles are charged, after the particles are charged, they move to the surface of the anode plate under the action of the electric field force, and finally reach the surface of the anode plate to complete the electrostatic adsorption process.
  • the clean flue gas is discharged into the chimney from the outlet 11: according to the gray surface area of the anode plate Imported fly ash content and flushing condition, the regulating valve of the anode water film arranging device 3 controlled by PLC adjusts the water quantity, and the ash layer attached to the surface of the anode plate is flushed to the ash hopper 1 by adjusting the water film thickness on line, gray water
  • the mixture flows out through the sewage pipe 8 into the gray water treatment system, and the sputum is recycled after the gray water is separated.

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  • Electrostatic Separation (AREA)

Abstract

公开了一种用于静电除尘器上的固体阳极板表面水膜布置工艺及装置。该装置由夹板紧固螺栓（12）、悬吊夹板（13）、布水管（14）、导流叶片（15）、阳极板紧固螺栓（16）、阳极板（17）、极板下部定位钢板（18）、极板下部固定轴（19）、定位钢板紧固螺栓（20）组成。阳极板（17）表面经亲水化剂涂装预处理，阳极板（17）上部通过悬吊夹板（13）与布水管（14）联接，阳极板（17）上部扭出呈45°导流叶片（15）；阳极板（17）前端采用宽度为5~8mm的波纹导流槽（21）；不锈钢管交叉焊接成网格型布水管网，布水管（14）下端开有布水孔并与外部工艺水箱连接，其进水量由PLC控制；阳极板（17）竖直放置，宽度相同的阳极板（17）组成静电场通道；放电极上、下大梁分别由上、下绝缘箱（4，9）悬吊并与壳体（2）绝缘；在阳极板（17）下部设置灰斗（1）。该装置通过水膜清灰方式能彻底清除沉降在阳极板（17）表面的颗粒物，可实现烟气达标排放。

Description

一种刚性阳极板表面水膜布置工艺及装置
一、技术领域
本发明属于大气污染物治理领域，特别是涉及一种基于静电除尘器刚性阳极板的表面水 膜形成工艺及装置。
二、 背景
目前燃煤电厂 95%采用电除尘器,主要包括干式静电除尘器和湿式静电除尘器两大类,。 众所周知' fJ¾静电陈主器 ^！于超细颍粒物去陈能力非 有限，静电陈虫 3仍有人重细颗敉 飞灰进入环举，造成污染并影响人类健康。影晌除尘器运行效率主要有烟气性质、操作条件、 设备状况的多方面原因， 其中对于传统刚性阳极板材料， 传统的机械振打清灰方式引起的 "二次携^"是导 超细果 J粒物脫除效率较低的直要原 H之一。
湿式静电除尘器采用水膜清灰方式，可有效避免粉尘二次扬 并具有高的电晕电流和 明显的颗粒凝并效果，对超细颗粒物控制排放方面具有明显的技术优势，正逐渐在火电厂中 得到应用。然而目前的湿式电除尘器一般采用固体阳极板， 在同样的冲洗水量条件下， 因刚 性材料本身机加工平面度偏差和表面张力作用，水膜在阳极板表面易形成沟流，这样在收尘 清灰过程中仍然存在：为冲洗彻底表面冲洗水量大导致的水资源浪费、阳极板表面水膜不均 残余粉尘形成 "干斑点"导致 "火花放电"故降、大部分设备采用的停机冲洗操作缺陷等问 题。
三、 发明内容
本发明以电除尘器普遍采用的固体阳极板为基础， 采用特定的表面涂装预处理工艺， 并设计与之相应的水膜布置结构 , 提出了一种刚性阳极板表面水膜布置工艺及装置。
本发明是通过如下方式实现：
—种刚性阳极板表面水胰布置装置， 该装置由夹板紧固嫘栓、 悬吊夹板、 布水管、 导 流叶片、 阳梭板紧固螺栓、 阳极扳、 极板下部定位钢板、 极板下部固定轴、定位钢板紧固螺 栓组成。 其特征在于， 阳极扳表面经亲水化剂涂装预处理： 阳极板上部扭出呈 45° 导流叶 片，阳极板前端轧制成 度为 5~8mm的波纹导流槽，不锈钢管交叉焊接组成网格布水管网， 不锈钢管下部按序列密布布水孔；阳极板上部通过悬吊夹与布水管联接，阳极板下部固定在 阳极下固定梁上；采用宽度相同的阳极板组成静电场通道。一种固体阳极板表面水膜布置工 艺，其特征在于： 阳极板表面经亲水化剂涂装预处理后表面能增加， 液体可从不同部位在阳 极板表面铺展快速形成薄的均匀水膜； 水自布水管流出经 45° 扭曲导流叶片进入阳极板上 部，完成冲洗水量的一次均布；经过一次均布的 体分别从阳极板上部的正面和背面进入位 于阳极板前端的波纹形导流槽内,均匀将水布置在阳极板的上部,芫成 洗水 ¾ 二 ； 阳极板 ¾过表面涂装预处理赋予表面自洁性，粉尘层在阳极表面附着不牢，容易被表面水胰 冲掉实现彻底清灰， 且烟气流与水膜顺流接触产生摩擦力， 增强水膜冲洗积灰作用力。本发 明的阳极板采用经表面涂装预处理的固体阳极板， 阳极板上部扭出呈 45° 的导流叶片， 阳 极板前端采用轧制的宽度 5~8mm波纹形导流槽,阳极板上部通过六片悬吊夹与布水管联接。 阳极板的下部固定在阳极下固定梁上， 由不锈钢管交叉焊接组成网格布水管网，布水管下部 密布布水孔并与外部工艺水箱连接， 其流量由 PLC控制。 采用宽度相同的阳极板组成静电 场通道， 放电极上、 下大粱由上、 下绝缘箱悬吊并与壳体绝缘， 在阳极板下部设置灰斗。
一种刚性阳极板表面水膜布置工艺， 主要包括：
m ' W极板经过表而狳¾预々 b理表面能燔加 .液休 IT从不固邬位; j*BH极板表面铺展 直 形成薄的均匀水膜；
(2) 水目布水営流出经 45° 扭曲导 ¾叶片进入阳拔衩上部，完成沖沆 重的一次均布； 经过一次均布的液体分别从阳极板上部的正面和背面进入位于阳极板前端的波紋形导流槽 内. 均匀将水布置在阳极板的上部， 完成沖洗水 ft的二次均布， 两次均流工艺可在较小给水 率条件下， 实现阳极板表面均匀水胰的快速形成;
(3) 阳极板通过表面涂装预处理赋予表面自洁性，粉尘层在阳极表面附着'不牢，容易被 表面水 抻实现彻底淸灰， 且烟气以 l~5m s速度通过片状阳极扳， 气流与水膜顺流接触 产生摩擦力，增强水膜沖洗枳灰作用力，消除传统机械淸灰过桎中存在的"一次飞扬"现家。
具体实现操作过程为： 烟气经过壳体进口导流片均匀化处理后进入湿式静电除尘装置； 刚性阳极板表面水膜布置、阳极板上支撑梁、支撑梁限位梯形板对阳极板上部定位； 由 PLC 对每个阳极板模块进行布水量调节；布膜液体利用极板表面亲水层，加快液体在极板表面的 铺展速度，促使极板表面均匀薄水膜快速形成; 阳极扳通道内在中心放置放电极， 阳极板与 放电极构成高压非均匀电场，放电极将其附近气体电离， 形成带电荷的离子和电子，碰撞微 细颗粒物 之荷电， 微细颗粒物在静电场作用下到达阳极板表面后， 在静电力、机械力、分 子力、液体表面张力的综佥作用下附着在阳极板水臟卜..微细颗粒物吸湿膨胀团聚形成粒径 较大的不规则颗粒物，并形成吸附效应吸附后续接近极板的微细颗粒物，最终沉降粉尘形成 密实堆积模式，有效防止气流的二次冲刷携带；烟气以 l〜5m s速度通过阳极板组成的静电 场通道，气流与水膜顺流接触提供沿水膜向下的摩擦力'阳极板表面的亲水化赋予表面自洁 性， 降低粉尘层在阳极表面的黏附力，粉尘层附着不牢易被表面水膜冲掉实现彻底清灰，避 免 "二次飞扬"。
本发明提出的刚性阳极板表面水膜布置工艺及装置，通过对固体阳极板进行表面涂装预 处理， 可在传统阳极板表面实现水膜均布、水量消耗低、可连续带电冲洗、 飞灰冲洗彻底无 二次飞扬、长期连续可靠运行。本发明与传统阳极板水膜布置工艺相比， 具有耐腐蚀性能优 良、 冲洗水量小、 表面水膜均匀、 电场稳定、 可连续带电冲洗、 运行安全可靠稳定等优点， 并同时实现飞灰颗粒物的髙效脱除和彻底淸灰。满足火电厂大气污染物排放标准要求，具有 广阔的市场应用前景。
四、 附图说明 图 1为湿式静电除尘结构示意图， 图 2为湿式静电除尘器 A-A剖面示意图， 图 3为刚 性阳极板表面水膜布置装置主视图， 图 4为刚性阳极板表面水胰布置装置侧视图，
图中 1为灰斗、 2为壳体、 3为阳极水膜布置装置、 4为上绝缘箱、 5为阴极线、 6为喷 淋管、 7为上封头、 8为排污连通管道、 9为下绝缘箱、 10为人孔门、 11 为烟气出口、 12 为夹板紧固嫘栓、 13为悬吊夹板、 "为布水管、 15为导流叶片、 16为阳极板紧固螵栓、 17 为阳极板、 18 为极板下部定位钢板、 19为极板下部固定轴、 20为定位钢板紧固螺栓、 21 为波紋形导流槽。
五、具体实 3fe¾f¾
下面结合图 1、 图 2、 图 3和图 4出本发明的一个最佳具体实施方式。
刚' likre taw表面水 JW i ^簠工≥;ja*fes 3a¾Lffl i . s 图 J和图 i
Figure imgf000005_0001
烟气通过上封头 7流态均化后进入充体 2, 烟 先流经 6喷淋管层， 通过由上部绝缘箱 4 悬吊的阴极线 5, 进入由夹板紧固嫘栓 12、 悬吊夹板 13、 布水管 14、 阳极板紧固嫘栓 16 抝成的 极永臛布壹钹 « 1 4.日成的 极诵道. W极板 17底邬由极板下 钢板 1 R、 ίϋΜ 下《β固定轴 19 , 定位钢板紧固嫘抢 20固定， 阳极板 ^直放置， 布膜液体经过布水管 14底
- 铺展形成均匀水胰 { 1±1¾极杈农面水肤布直装直 -,—出？皮 6mm的 9扳、 ■、 不^钢 管、工字钢构成整个壳体框架； 工字钢构成阳极板上支撑梁， 固定阳极板框架： 阳极板采用 传统阳极板材料， 表面经过通过添加亲水化剂使表面产生亲水性； 阳极板上部扭出呈 45° 的导流叶片, 完成水量一次均布， 井防止液体喷 造成电场失稳： 阳极极上部米用轧制的宽 皮：) ~smm波纹形导流槽， 液体在波纹槽 Λ充成一次均布； ώΦ somm不锈钢管横纵向分别 间隔 30G~500imn构成阳极板框架， 不锈钢管交叉焊接组成网格布水管网， 布水晋下邵 ¾布 Φ1〜Φ2ιηιη布水孔并与外部工艺水箱连接， 其流量 ώ PLC控制； 阳极板上部通过六片悬吊 夹与 Φ50圆管联接； 悬吊夹下部和阳极板之间由三个 M16的螺栓联接； 每块阳极板下部用 四个 M20嫘栓固定在阳极下固定梁上； 工字钢与壳体焊接构成支撑装置， 支撑绝缘箱； 宽 度相同的阳极板组成静电场通道： 放电极上、 下大粱由上、 下绝缘箱悬吊并与壳体绝缘： 壳 体上开有 1200X 800mm人孔门用来方便检修人员进入； 阳极板下部设置灰斗， 灰水混合物 由排污管道排出， 进入灰水处理系统， 清水循环利用。
阳¾板〖7与阴极线 5保持固定极间距并形成稳定的非均匀高压电场， 由上绝缘箱 4、 下绝缘箱 9悬吊阴极线 5并与壳体绝缘，防止漏电、短路等现象发生：装置出现运行故障时， 检修人员 人孔门 10 入检修, 烟气日上 IfD 卜迎过每个 | 极 ¾ 成的通退时， 阴极线 5 将周围气体电离，产生负离子和电子，并与微细颗粒碰撞，颗粒荷电后，在电场力的作用下， 向阳极板表面运动， 最终到达阳极板表面， 完成静电吸附过程， 清洁烟气自出口 11排入烟 囱： 根据阳极板表面积灰程度与进口飞灰含量及冲洗情况， 由 PLC控制的阳极水膜布置装 置 3的调节阀门调节布水量，通过在线调整水膜厚度，将附着在阳极板表面的灰层冲洗至灰 斗 1中， 灰水混合物经排污管道 8流出进入灰水处理系统， 灰水分离后淸液循环利用。

Claims

权利 要 求 书
1、一种刚性阳极板表面水膜布置装置， 该装置由夹板紧固螺栓、悬吊夹板、 布水管、 导流叶片、 阳极板紧固螺栓、 阳极板、极板下部定位钢板、 极板下部固 定轴、定位钢板紧固螓栓组成。其特征在于，阳极板表面经亲水化剂涂装预处理; 阳极板上部扭出呈 45° 导流叶片，阳极板前端轧制成宽度为 5~8mm的波纹导流 槽，不锈钢管交叉焊接组成网格布水管网， 不锈钢管下部按序列密布布水孔； 阳 极板上部通过悬吊夹与布水管联接，阳极扳下部固定在阳极下固定梁上；采用宽 度相同的阳极板组成静电场通道。
2、 一种刚性阳极板表面水膜布置工艺， 其特征在于： 阳极板表面经亲水化 剂涂装预处理后表面能增加，液体可从不同部位在阳极板表面铺展快速形成薄的 均匀水膜； 水自布水管流出经 45° 扭曲导流叶片进入阳极板上部， 完成冲洗水 量的一次均布；经过一次均布的液体分别从阳极板上部的正面和背面进入位于阳 极板前端的波纹形导流槽内，均匀将水布置在阳极板的上部，完成冲洗水量的二 次均布； 阳极板通过表面涂装预处理赋予表面自洁性，粉尘层在阳极表面附着不 牢， 容易被表面水膜冲掉实现彻底清灰， 且烟气流与水膜顺流接触产生摩擦力， 增强水膜沖洗积灰作用力。
3、 根据权利要求 1所述的一种刚性阳极板表面水膜布置装置， 其装置特征 在于： 阳极板釆用经表面涂装预处理的固体阳极板； 阳极板上部扭出呈 45° 的 导流叶片； 阳极板前端采用轧制的宽度 5~8mm波纹形导流槽； 阳极板上部通过 六片悬吊夹与布水管联接； 阳极板下部固定在阳极下固定粱上；不锈钢管交叉焊 接组成网格布水管网，布水管下部密布布水孔并与外部工艺水箱连接，其流量由 PLC控制； 釆用宽度相同的阳极板组成静电场通道； 放电极上、下大梁由上、下 绝缘賴悬吊并与壳体绝缘； 阳极枚卜部设置灰斗。
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