Because when the gasifier http://www.cngrjx.com converts coal into gas, a mixture of air and water vapor is needed as a gasification agent. In order for the gasification agent to flow smoothly in the coal seam, we must use lump-shaped coal and ensure the appropriate particle size. The less coal dust, the better. Generally speaking, the larger the gas generator model, the larger the coal particle size required, which is approximately within the range of 20-80mm. The uneven particle size of gasification coal and the high proportion of coal dust in it are the main reasons for the chaotic gasification level of the gasifier and the poor economic efficiency of the gas station. The particle size of the gasified fuel entering the furnace is uneven, resulting in uneven gasification agent flow rates, resulting in inconsistent coal gasification rates, resulting in confusion between the oxidation layer and the reduction layer, ultimately affecting gas production and gas quality. The increase in coal particle size will reduce the resistance of the material layer and increase the flow rate of the gasification agent, causing the fire layer to move upward. In severe cases, the central tube will be burned out. On the contrary, if the particle size of the coal is very small or coal dust is entrained, the resistance of the material layer will increase and the gasification intensity will decrease, causing the gasification conditions to be destroyed and the temperature of the oxide layer to drop. The coal will be brought out during the ash removal before it is fully gasified, resulting in unburned carbon blocks in the slag, the carbon content of the ash and slag will increase, and the gas production and gas quality will decrease.