The utilization efficiency of coal is generally 25%-35%, and the utilization rate is only about 45%.

From the point of view of the paper, how to improve its utilization rate, make it burn fully and make use of its combustion heat.

1, crushing it to make it fully contact with air or oxygen;

2. Use waste heat to heat the air entering the combustion chamber;

3, heat preservation;

4. Supplement oxygen.

Wait a minute.

The paper also considers the increase of equipment energy consumption to improve its utilization efficiency. It is also necessary to eliminate the harm to the environment when burning coal.