... water film desulfurization deduster Dust PrinciplesBoiler flue gas in the role of induced draft fan, ... 3-5mm wall perfectly uniform water film; smoke gas rises with the water film reverse contacts, ... , import tobacco-speed :18-22m / s 4, up smoke-speed :4-5m / s 5, emission concentration <200mg ... m3 6, device resistance: ≤ 800Pa 7, Ringelmann smoke blackness 0-1 gradeFeatures1, the equipment used in all ...