Phenomena that may occur during the operation of pulse bag dust collectors: The purification efficiency and service life of the filter bags of pulse bag dust collectors with the same specifications, parameters, and materials may vary in different working conditions. The timely removal of dust on the surface of the filter bag is an important factor affecting the purification efficiency and service life of the pulse bag filter bag. 1、 If the blowback gas contains moisture, oil stains, impurities, etc., it can cause the filter bag to become clogged or even stuck. 2、 Compared to commonly used circular bags, conical filter bags with different upper and lower diameters are prone to shaking off the plastic powder during pulse jet vibration. Bottom leakage filter bags can directly discharge the shaken dust into the bottom of the equipment. Small diameter front folded filter bags can instantly expand outward and clean the dust by spraying gas during pulse jet vibration. 3、 If the dust on the filter bag is not easy to peel off or cannot be cleaned thoroughly, it is necessary to first identify the cause and then find the corresponding solution. Do not directly use hard objects to hit the filter bag, as this will directly cause damage to the surface of the filter bag or deformation of the support mesh. 4、 Filter bags made of materials, usually with surface treated filter materials, have significant dust removal effects. For example, several surfaces are treated with fluororesin, which has an anti fouling effect on the filter material. 5、 In the case of low air pressure, within the range that the filter bag can withstand, the higher the vibration pressure, the better. Generally, the equipment is set to a pressure of about 5kg for the use of the filter bag. How to extend the service life of pulse bag filter? Regarding the daily maintenance of pulse bag dust collectors, there are usually many details to consider when using them. If we want to extend their service life, we should pay attention to the following methods. 1、 Adjust the temperature: When applying heating measures, the efficiency of temperature detection should be improved, because for the design of its dust removal system, the purpose of using pulse bag filters is to avoid condensation. 2、 Avoiding air leakage: In fact, for the dust collector itself, if there are gaps in its personal parts, it usually directly leads to air leakage. Therefore, when controlling, it can exceed 3.5%. 3、 Adding a raw material storage shed: Regarding this method, the moisture content of some cement raw materials is different, so when designing the storage shed, it can avoid the occurrence of rain and facilitate equipment maintenance. After the above introduction, everyone should be able to master the maintenance methods of pulse bag dust collectors. In fact, during the operation process, we should develop good application habits, which can extend the service life over time. Of course, for specific operation details, we should also follow the operation manual step by step, so as to improve work efficiency. The filtration principle and design characteristics of pulse bag filter: The flue gas cooling and disposal system of pulse bag filter equipment consists of waste heat boiler, hydrated lime equipment, activated carbon powder injection equipment, and bag filter. Activated carbon adsorption is currently recognized as a useful method for removing dioxins. The bag filter can trap the activated carbon powder and residual smoke particles adsorbed with dioxins on the surface of the filter bag. The application of this series of methods. Ensure qualified emissions. In order to avoid the re generation of dioxins during the cooling process, the flue gas needs to be treated through a cooling and purification system composed of waste heat boilers, hydrated lime equipment, activated carbon powder injection equipment, Shanghai dust collectors, and wet acid removal equipment, effectively removing substances from the flue gas and ensuring qualified exhaust emissions. Pulse bag dust collectors commonly use circular bags, which are divided into two types based on the direction of dust airflow: glare and downward intake. It is generally composed of a clean air chamber, a middle box, an ash hopper, a structure, and pulse blowing equipment. The filtering principle of pulse bag filter: During the task, the dusty airflow enters the dust hopper of the dust collector from the lower part of the box. The flow rate decreases, and a portion of large particles, high-density dust, and aggregated dust particles in the airflow spin down the ash hopper along the cylinder wall under centrifugal and gravity effects; Fine dust particles with fine particle size and low density are suspended in the gas and evenly dispersed in the gaps of the filter bag through the airflow dispersing device. They are then deposited on the surface of the filter bag through inertial collision, screening, and other effects. The purified gas is discharged by the main fan. Pulse bag dust collectors generally use circular bags, which are divided into two forms: side inlet and bottom inlet according to the direction of dusty airflow movement. This type of dust collector usually consists of an upper box (clean air chamber), a middle box, an ash hopper, a frame, and a pulse blowing device. When the dusty gas enters the ash hopper from the lower part of the box during work, due to the sudden expansion of the airflow cross-sectional area and the decrease in flow velocity, some of the coarse and high-density dust particles in the airflow settle down inside the ash hopper under the action of gravity; After entering the bag filter chamber, dust particles with low particle size and density deposit on the surface of the filter bag through a combination of inertial collision and sieving effects. The purified gas enters the clean air chamber and is discharged through the exhaust pipe and fan.
