|Industrial dust treatment equipment series|
|Welding fume exhaust gas treatment series|
|Grinding polishing dust removal equipment|
|Stand-alone dust collector|
|Spiral duct and accessories series|
那么就用到湿式除尘器,那么使用湿式除尘器应该注意事项是什么：一般湿式除尘器绝大部分是用内循环喷淋水箱,分体式水箱它的优点是极易清理，若尘源设备规模较小，需要同时除去有害气体，或者需要把极其微细的炭黑、铅尘等粉尘完全捕集起来，往往采用湿式除尘器，选用湿式除尘器时应考虑污水处理以防止二次污染。 At present, some industrial dust produced in production is wet , so wet dust collectors are used , then what should be paid attention to when using wet dust collectors : most of the general wet dust collectors use the internal circulation spray water tank , and the split water tank The advantage is that it is easy to clean. If the size of the dust source equipment is small, it is necessary to remove harmful gases at the same time, or it is necessary to completely capture extremely fine carbon black, lead dust and other dust. Wet dust collectors are often used. When using wet dust collectors Sewage treatment should be considered to prevent secondary pollution.
In addition, in order to effectively use the dust collector, it should be treated according to the situation. Measures should be taken to prevent explosion when handling carbon monoxide-containing flue gas, such as introducing air into the high-temperature part of the flue at the furnace outlet to convert carbon monoxide into carbon dioxide.
Selection of industrial dust collector
那么就有一些用户会咨询工业除尘器的选型一般从那方面考虑,现在就由小编和大家一起来了解工业除尘器的选型有那些： Industrial dust collectors are now widely used in industrialized production , so some users will consult the selection of industrial dust collectors in general from that point of view . Now Xiaobian and everyone will understand the selection of industrial dust collectors:
1.Select according to the amount of processing gas
The amount of processing gas is the determining factor that determines the size and type of the dust collector. For atmospheric volume, it is necessary to choose a dust collector that can handle large gas volumes. If multiple dust collectors that handle small gas volumes are used in parallel, it is often uneconomical. For smaller gas volumes, it is most economical to compare which type of dust collector. It is the easiest to meet the environmental requirements of dust source control and dust emission.
After the dust collector enters actual operation, it is sometimes difficult to predict the impact of the operating environmental conditions. Therefore, when determining the capacity of the equipment, you must ensure a certain margin or reserve some space that may increase the equipment.
2.Select by dust dispersion and density
The degree of dust dispersion has a great impact on the performance of the dust collector, and the degree of dust dispersion is the same, due to different operating conditions. 以上时可以选择旋风除尘器，在粒径多为数微米以下时，则应选用静电除尘器、布袋除尘器。 Therefore, when choosing the type of dust collector, the first thing is to accurately grasp the dispersion degree of the dust. For example, if the particle size is more than 10um , a cyclone dust collector can be selected. When the particle size is more than several microns, an electrostatic dust collector, Bag filter. The specific selection can be based on the degree of dispersion and other requirements. Then determine the type and performance of the dust collector according to other conditions and introduction.
Dust density also has a great impact on the performance of dust collectors. The most obvious manifestations of this impact are gravity, inertial and centrifugal dust collectors. A common feature of all dust collectors is that the smaller the bulk density, the more difficult the separation and capture of dust particles, and the more serious the secondary fly of dust. So special measures should be taken in operation and equipment structure.
3.Select by gas dust concentration
For gravity, inertia and cyclone dust collectors, generally speaking, the greater the dust concentration in the inlet, the higher the dust removal efficiency. 为宜；对布袋除尘器，含尘浓度越低，除尘性能越好；在较高初始浓度时，进行连续清灰，压力损失和排放浓度也能满足环保要求。 However, this will also increase the dust concentration at the outlet, so it cannot be generally considered that the dust removal efficiency is good only from the high dust removal efficiency. For wet dust collectors such as Venturi dust collectors and jet scrubbers, the initial dust concentration is 10g / m3. For a bag filter, the lower the dust concentration, the better the dust removal performance. At higher initial concentrations, continuous ash cleaning, pressure loss and discharge concentration can also meet environmental protection requirements. 下，不加预除尘器可以使用。 The initial concentration of electrostatic precipitator is 30g / m3 , and it can be used without pre-precipitator.
4.Effect of dust adhesion on dust
The adhesion mechanism of dust and wall has a great relationship with the specific surface area and moisture content of dust. 越小，比表面积越大含水量越多，其粘附性也越大。 The smaller the dust particle size d , the larger the specific surface area, the greater the water content, and the greater its adhesion.
In a cyclone dust collector, dust adheres to the wall surface due to centrifugal force, and there is a danger of clogging. And the dust adhered to the bag type dust collector is easy to block the holes of the filter bag, and the electrostatic precipitator is likely to cause the discharge electrode and the dust collector to accumulate dust.
5, the impact of dust specific resistance on selection
～ 10n&.cm范围之内。 The dust resistance of the electrostatic precipitator should be in the range of 104 to 10n & .cm . The specific resistance of dust varies greatly with the temperature and humidity of the dust-containing gas. ～ 200度之间比电阻值最大，如果含尘气体加硫调质则比电阻降低。 For the same kind of dust, the specific resistance value is the largest between 100 and 200 degrees. If the dust-containing gas is sulfurized and tempered, the specific resistance will be reduced. Therefore, when selecting an electrostatic precipitator, it is necessary to first grasp the specific resistance of the dust, and fully consider the choice of the temperature of the dust-containing gas and the adjustment of the properties of the dust-containing gas.
6.Effect of dust-containing gas temperature on selection
Dry dust collectors must, in principle, be operated at temperatures above the dew point of the dust-containing gas. In wet dust collectors, due to water evaporation and condensation after being discharged to the atmosphere, the treatment should be performed at a low temperature as much as possible. In the filter cartridge dust collector, the temperature for directly or indirectly processing dust-containing gas should be reduced to the filter cloth. Below heat-resistant temperature. 度以下，其它滤布则在80 ～ 200度之间；在电除尘器中，使用温度可达400度，要考虑粉尘的比电阻和除尘器的结构热膨胀来选择处理含尘气体的温度 The use temperature of glass fiber filter cloth is generally below 260 degrees, and other filter cloths are between 80 and 200 degrees. In electric precipitators, the use temperature can reach 400 degrees. The specific resistance of dust and the thermal expansion of the structure of the dust collector must be considered To select the temperature at which the dusty gas is processed
如需要了解更多详情请咨询400-622-6298 The above is the selection of industrial dust collectors shared by Yuchen Technology . For more details, please consult 400-622-6298.