... biogas and coal, biogas and electricity, biogas and oil gas dual use boiler. Biogas boiler mainly used in the wastewater ... , biogas and coal, biogas and oil, biogas and natural gas, etc. Performance and characteristics 1. Boiler uses renewable energy ... 2. Use automatic combustor, automatic windsweeper and ignition, can prevent gas leakage. 3. Has automatic control devices, can control feed pump and ...