In the wheat cleaning workshop of a certain flour mill, the dust is flour particles (non corrosive), the flue gas temperature is 25-40 ℃, and the humidity is less than 60%. Using polyester needle punched felt filter bags (weighing 450g/m ²), combined with a cyclone and bag dust removal system, the dust emission concentration is less than 30mg/m ³, and the filter bag has a service life of 3 years. The annual replacement cost is reduced by 60% compared to acrylic filter bags.
