... equipment1Boiler properSteam drum, air heater, soot blower, refractory material, cyclone separator, air preheater2Coal feeding systemCoal silo, ... , bellows, limestone pipeline4Startup bed material systemBed material silo, bucket elevator, bed material pipeline5Air/gas systemPrimary air fan ... continuous heat exchange.3. Favorable for keeping furnace temperature and pressure constant .4. Low temperature ...