Filter for submicron particles in flue gas - has light structure, low pressure drop and traps light particles

摘要

A filter material for removing extremely fine (sub-micron) particles from inward-flowing flue gas in bag-type filters comprises a coarse mech basic fabric with a small quantity of fibrous material stitched to it, giving a weight density of 200-350 (220) g/m2 and gas permeability at 600-1500 (1000-1500) litre/dcm2/minute at 20mm. water-gauge pressure drop. The material is so light that it is translucent. Prefd. materials for the coarse fabric are polyacryl, polyamide, polyester.