... boiler is appliable to large-scale heating.The hearth used coal gas combustion, environment Friendly and smokeless. Meanwhile, used ... continuous burning 6-12 hours.3),Forced burningThe coal combustion system is composed of flue draught fan, combust completely, ... biogas can combust automatically.Applicable fuel:1,Soft coal, anthracite, lump coal, scattered coal are all available.2,Biogas UnitsCWNS0.7- ...