环保除尘设备经理过从干式旋风除尘---多管旋风除尘---麻石水膜除尘---静电除尘的进程。现在，跟着国家对环保的注重程度和环境保护请求的日益进步，以及滤袋的国产化和使用寿命的延伸，火电厂锅炉尾部除尘又有回到布袋除尘的趋势。
Environmental protection equipment manager from the dry dust - multiclone dust - granite water film dust, electrostatic dust removal process. Now, following the state's attention to environmental protection and the increasing progress of environmental protection requests, as well as the localization of domestic bags and the extension of their service life, the dust collection of boilers in the thermal power plants has returned to the trend of bag dust removal.
在环保除尘设备的前期运用中，许多项目有失利的经验。其主要要素在于其时的技能及配套件，特别是滤袋这一要害配套件的质量不过关，国内外都短少价格合理、耐高温、耐腐蚀、能适用于燃煤锅炉烟气除尘的资料。
In the early application of environmental protection dust removal equipment, many projects have lost experience. The main factor is that the skills and accessories, especially the quality of the key parts of the bag does not pass, at home and abroad are lack of reasonable price, high temperature resistance, corrosion resistance, suitable for dust removal of coal fired boiler data.
前期在环保除尘设备失利后，燃煤锅炉烟气除尘根本使用环保除尘设备。但跟着国家环保请求的日益进步、电除尘器的广泛运用，其缺点也逐渐露出出来。
In the early stage, after the environmental protection dust removal equipment defeat, the coal boiler flue gas dust removal basically uses the environmental protection dust removal equipment. But following the progress of environmental protection request and the wide application of electrostatic precipitator, its shortcomings are gradually revealed.
首要，环保除尘设备的除尘功率不稳定。环保除尘设备运转前期，除尘效果根本能到达请求，但因为其构造及作业原理的限制，跟着运转时刻的连续，电除尘器内部组件变形、积灰、电场改变，除尘效果不断降低，烟尘排放超支。
First, the dust removal power of environmental protection dust removal equipment is unstable. Environmental protection equipment operation period, the dust removal effect can reach the basic request, but because of its structure and operation principle of the restrictions, along with thecontinuous running time of electric precipitator internal components deformation, ash deposition and electric field change, the dust removal effect decreases, soot emissions overruns.
其次，环保除尘设备的运转归纳费用高。电除尘器在运转一个周期后，内部构造变形、损坏对比严重，为保证其正常运转，火电厂不得不常常对电除尘器进行修理。修理投入的人力、物力及维修停产带来的丢失都很大。
Secondly, the operation of environmental protection dust removal equipment induces high cost. After a period of operation, the internal structure deformation and damage of the electrostatic precipitator are serious. In order to ensure its normal operation, the thermal power plant has to often repair the electrostatic precipitator. The manpower, material, and maintenance costs of the repair inputs are greatly lost.
现在，随着环保除尘设备核心部件――滤袋等配套件生产技能的日益进步，原来环保除尘设备在燃煤锅炉烟气除尘运用中失利的要素，都得到了对比妥善的解决，布袋除尘器推广使用的机遇日渐老练。
Now, with the increasing progress of environmental protection equipment core components - bag and other accessories production skills, elements of the original environmental protection equipment failure in coal-fired boiler flue gas dust removal application, have been solved properly compared, dust collector to promote the use of increasingly sophisticated opportunities.
环保除尘设备构造原理
Construction principle of environmental protection dust removal equipment
环保除尘设备也称为过滤式除尘器，是一种干式高效除尘器，它是使用纤维编制物制作的袋式过滤元件来捕集含尘气体中固体颗粒物的除尘设备。其效果原理是尘粒在绕过滤布纤维时因惯性力效果与纤维磕碰而被阻拦。纤细的尘粒(粒径为1微米或更小)则受气体分子冲击(布朗运动)不断改变着运动方向，因为纤维间的空地小于气体分子布朗运动的自在途径，尘粒便与纤维磕碰触摸而被别离出来。其作业进程与滤料的织造办法、纤维的密度及粉尘的分散、惯性、遮挡、重力和静电效果等要素及其清灰办法有关。滤布资料是布袋除尘器的要害，功能杰出的滤布，除特定的致密度和透气性外，还应有杰出的耐腐蚀性、耐热性及较高的机械强度。耐热功能杰出的纤维，其耐热度现在已可到达250—350℃。
Environmental protection dust removal equipment, also known as filter dust collector, is a dry high efficiency dust collector, it is a bag filter element made of fiber fabric to capture dust particles in the dust gas dust removal equipment. The principle is the dust in the filter cloth around the fiber by the inertia force and the effect of fiber knock and blocked. Fine dust particles (diameter of 1 microns or less) is affected by the impact of gas molecules (Brown) changing the direction of movement, because comfortable way to the space between gas molecules is less than the fiber Brown motion, particle and fiber bump touch is isolated. The operation process is related to the weaving method of the filter material, the density of the fiber and the dispersion of dust, inertia, shelter, gravity and electrostatic effect, and the method of cleaning the dust. Filter cloth data is the key of bag filter, the filter cloth with outstanding function, besides the particular density and air permeability, should also have outstanding corrosion resistance, heat resistance and higher mechanical strength. Fiber with excellent heat resistance, its heat resistance has now reached 250 - 350 degrees.
环保除尘设备按其清灰方法的不一样可分为：振荡式、气环反吹式、脉冲式、声波式及复合式等五种类型。其间脉冲反吹式根据反吹空气压力的不一样又可分为：高压脉冲反吹和低压脉冲反吹两种。脉冲清灰袋式除尘器因为其脉冲喷吹强度和频率可进行调理，清灰效果好，是现在世界上使用广泛的除尘设备。
Environmental protection dust removal equipment according to its ash cleaning method is not the same, can be divided into: oscillation type, gas ring back blowing type, pulse type, acoustic wave type and composite type, such as five types. In the meantime, the pulse counter blowing type can be divided into two types: high voltage pulse reverse blowing and low pressure pulse reverse blowing according to the different blowing air pressure. Because of its pulse injection intensity and frequency, pulse dust cleaning bag filter can be adjusted and has good cleaning effect. It is now widely used dust collector in the world.
环保除尘设备根本构造
Basic structure of environmental protection dust removal equipment
环保除尘设备由滤袋组件、导流设备、脉冲喷吹体系、出灰体系、操控体系、离线保护体系、箱体等构成。含尘气体由导流管进入各单元室，在导流设备的效果下，大颗粒粉尘别离后直接落入灰斗、其他粉尘随气流均匀进入各仓室过滤区，过滤后的洁净气体透过滤袋经上箱体、提高阀、排风管排出。跟着过滤工况的进行，当滤袋表面积尘到达必定厚度时，由清灰操控设备(差压或定时、手动操控)按设定程序封闭提高阀，操控当前单元离线，并翻开电磁脉冲阀喷吹，抖落滤袋上的粉尘。落入灰斗中的粉尘经由卸灰阀排出后，使用输灰体系送出。
Environmental protection dust removal equipment consists of filter bag assembly, diversion equipment, pulse blowing system, ash removal system, control system, off-line protection system, box and so on. Dust containing gas from the diversion pipe into the unit room, in the diversion device under the effect of large particles of dust separation directly into ash hopper and other dust with air evenly into each chamber filtration area, clean gas is filtered through the bag through the upper box body, improve the valve and exhaust tube. With the filtering condition, when the surface of filter bag dust reaches a certain thickness, the dust control equipment (pressure or timing, manual control) according to the program to improve the valve closed, the control unit is offline, and open the electromagnetic pulse valve blowing dust bag, shake off the. The dust falling into the ash bucket through the discharging valve after discharge, the use of ash conveying system to send.