How to calculate the filtration resistance of needle punched non-woven fabric filter bag?
Generally, the filter speed is 0.5 - 2m/min, and the particle efficiency is more than 99% for the particles larger than 0.1 microns, and the equipment resistance loss is about 980 - I470Pa;
In the operation of bag filter, it is important to control the speed of flue gas passing through the filter material (called filter speed).
The dust size mainly has two effects on the dust filter bag:1. filter structure and thickness of dust layer. The filter bag filter can be used fabric, can also be rolled or acupuncture blanket. Different filter media have different dust filtration process and different influence on dust filtration efficiency. The pores in the fabric lie between the warp, woof and fiber, which accounts for 30% to 50% of the total pore size.
2. filtration rate. The filter speed V (or than the load QF) is an important technical and economic index representing the capacity of the bag filter to treat gas. The selection of filtration rate should take account of economy and the requirement of filter efficiency.
