Four Steps to Select Dust Filter Bag and Dust Collector
The selection of dust filter bag and dust collector
generally goes through the following four steps:
1. Firstly, understand the temperature of the flue gas to be processed: As the core component of the bag filter
, the filter bag is very important to adapt to the temperature of the flue gas. If the normal working temperature of the filter material exceeds the temperature of the flue gas too much, the high cost of high-temperature filter material will cause an increase in equipment investment. If the normal working temperature of the filter material is lower than the temperature of the flue gas, the filter bag may be burned, causing great economic losses. So how to choose filter material according to the temperature of flue gas? Filter material is divided into: normal temperature filter materials below 130 ℃, medium temperature filter materials 130 ~ 180 ℃, high temperature filter materials 180 ~ 280 ℃. Knowing the temperature of the flue gas and the working temperature of the filter material, the filter material can be properly selected.
2. The second step is to understand the composition of the flue gas: this includes parameters such as dust content, proportion, particle size, viscosity, and moisture content of the flue gas. By understanding these, determine the dust removal method of the dust collector, the post-treatment method of the filter material, and the filtering wind speed. Generally speaking, the pulse bag dust collector is used in the working conditions where the amount of dust is large and the dust is sticky and light. The filtering wind speed is mostly controlled above 1.2m/min, and below 1m/min in a few conditions. Depending on the situation, high-pressure backflushing dust collectors and cyclone dust collectors can be used. The post-treatment methods of filter materials generally include microporous film, water-repellent and oil-repellent, anti-static easy-cleaning treatment, etc., which are all determined according to the situations.
3. The third step is to understand the amount of flue gas to be processed: The processing air volume of the dust collector is usually the working air volume plus the system air leakage coefficient (10% ~ 15%). Knowing the processing air volume and filtering wind speed of the dust collector, the total filtering area can be obtained by the formula: S=Q/60V. Among them, S: total filtering area Q: system processing air volume V: filtering wind speed.
4. Knowing the above points, we believe that you have known about the dust collector you want to order. As for the structure and layout of the dust collector, the specifications and quantity of the filter bag, the form and number of pulse valves are all matters for the engineer of the dust collector manufacturer, you only need to check and accept according to the parameters you have obtained above and the required dust removal effect.