According to the relevant policies issued by Anhui Province, in rural areas of China, coal-fired heating is still the mainstream in the north. Stopping and extinguishing loose coal is a universal regional behavior, which is not consistent throughout the country. The country has not stopped burning coal, and it is not a crime for farmers to burn coal for heating, but the demand focuses on not burning inferior coal.
Combustion boiler refers to a coal-fired boiler that uses the air in the air chamber to blow the hot material layer (mainly ash particles) on the fixed grate or chain grate into a boiling state, so that it can roll up and down with coal particles to burn.