Selection and evaluation of fuel for rolling equipment

There are many types of fuel, and different fuels have great differences in performance, that is, the same fuel, due to different origin, its heat is also very different. How to evaluate the fuel? It is mainly evaluated from the following two aspects:
1, the level of heat. Generally speaking, the fuel with high calorific value is good, and the fuel with low calorific value is poor, because if the same amount of heat is needed in production, the fuel with high calorific value is less, and the fuel with low calorific value is more.
2. Chemical composition of fuel. For example, the main components of solid and liquid fuel are carbon, hydrogen, sulfur, oxygen, nitrogen, water and ash, among which carbon is the main combustible element in solid and liquid fuel, which can release a lot of heat when burning, and is the basic source of heat. Hydrogen is also a combustible element of fuel, 1kg of hydrogen combustion generated heat, but it is a harmful component, because it burns SO and other products, heating workpieces and equipment have a corrosive effect, and pollution of the environment, air pollution, human health nitrogen, water and ash are non-combustible parts of the fuel.