Coal is not easy to fully contact with oxygen, resulting in incomplete combustion, low combustion efficiency, and relatively increased pollution emissions. When untreated solid coal is burned directly, a large amount of dust will be emitted along with the flue gas, causing a large amount of dust pollution.

 

   gas generatorAs the main equipment for converting coal from solid energy into gaseous and clean energy, the selection of gasification coal type is crucial and is directly related to its overall gasification effect.Single stage gas generatorThe requirements for coal particle size are constantly escalating, which also puts forward new requirements for engineers.

 

 

 

Any type of fixed-bed gasification device requires uniform particle size of coal entering the furnace to meet the needs of fluid mechanics and heat and mass transfer in the furnace. The reason why the two-stage furnace has strict requirements on coal particle size is because the total height of the material layer in the retort section and gasification section of the furnace is about 6-8 meters. If the coal particle size is very different, on the one hand, it will reduce the gap in the bed and increase the resistance in the furnace, resulting in a decrease in gasification intensity, a decrease in gas production, and an increase in the carbon content of the ash.