Due to the influence of environmental protection policies, many manufacturers have equipped dust removal equipment, but there are more or less problems in the actual use process, but most of these phenomena are not It is not caused by the quality of the dust removal equipment. In the final analysis, it is a matter of selection of dust removal filter materials. Therefore, enterprises must choose excellent dust removal filter materials. Here, the editor recommends polytetrafluoroethylene filter bag membrane .
In industrial flue gas dust removal, due to the different characteristics of steel, cement, power generation, waste incineration and other industries and the company’s own working conditions The difference in conditions makes it difficult to grasp the working conditions of the manufacturer. Therefore, in addition to the quality of the filter material itself, there are many factors that affect the service life of dust removal filter bags in terms of the external environment. Therefore, it is necessary to choose a good quality PTFE filter bag membrane. But the main factors include the following nine aspects: smoke volume; smoke content; smoke particles; smoke material types; temperature indicators; acidic gases, etc.
When the dust enters the dust collector, due to the different diameters and weights of the dust, the dust with larger diameters falls down with gravity or falls off under the interception of the filter bag. Dust with small particle size generates kinetic energy under the action of wind speed. When the dust is intercepted by the filter bag and gathered on the bag, the kinetic energy is converted to zero at this time, which will inevitably produce an impact force on the filter bag; under the force of kinetic energy, the dust will continue to wash away the filter bag. If the dust content in the flue gas is large, When the filtration wind speed is high, the filter bag will withstand tens of thousands of frictions and washes, and the fibers on the surface of the filter bag will not be able to withstand the wash and fall off, damaging the filtration efficiency of the filter bag.
According to particle size classification, it can be divided into: coarse dust (particle size greater than 40um), fine dust (particle size between 10un-40nm), microscopic dust (lOun the following). Because of their different particle sizes, the impact force on the dust filter bag is different, and the dust also contains a large amount of acidic substances and alkaline substances. Their diameters are very small. When intercepted by the bag, the impact of the filtering wind speed will be affected. It still cannot fall off and remains on the surface of the filter material or enters the interior of the filter material. When combined with water vapor, it will stick to the filter bag, causing chemical changes in the filter material to cause corrosion. Therefore, when selecting filter materials, the size of dust particles is also very important. PTFE filter bag membrane is a good choice.
Polytetrafluoroethylene filter bag membraneThe porosity can reach more than 88%, or even higher, and this membrane has a There are 1.4 billion micropores with a pore diameter ranging from 0.1um to 0.5um. It has high and low temperature resistance (-200℃-260℃). It will not age, split, or discolor after long-term use, and has strong weather resistance. It can ensure that all impurities such as bacteria are trapped, while having a large flux. If you are interested, please enter the store for consultation.