Main fuel types for burners:
Fuel oil: light oil (only diesel and kerosene), heavy oil, residue oil, etc.
Gas: natural gas, artificial gas, liquefied petroleum gas, gas (coalbed methane), biogas and other five categories. Among them, artificial gas, that is, urban gas, gas gas, biogas, etc., have great differences in composition and calorific value due to raw materials and generation methods.
