... stoker, big furnace design activities, manual, gleaming adaptability, coal, fuel wood, wood scraps, etc. Can be used as fuel.2, few movement ... intelligence unit heat exchanger, SFP efficient floating disc heat exchangers, steam regenerator, frequency conversion water supply equipment and desulfurization filter.4 ... Boiler pictures :Chain grate ,bars ,links ,drive bars : 2t Coal-fired steam boilers