Wuxi Guorong Machinery Manufacturing Co., Ltd. is located in Luoshe Town, Huishan District, Wuxi, on the shore of the beautiful Taihu Lake. It specializes in the production of single-stage gas generators, two-stage gas generators, LZD type electrostatic purification and recovery devices, flue gas dust removal devices, The flue gas desulfurization device integrates professional scientific research, design and production. It uses professional equipment and technology to build a high-quality gasifier. It uses a double-stage gasifier with a preheater. The products in the kiln are heated evenly, and the temperature of the kiln can reach 1500 degrees, and the temperature difference in the kiln is small.

       As the main equipment for converting coal from solid energy into gaseous and clean energy, the gasifier's choice of gasification coal type is crucial and is directly related to its overall gasification effect. The two-stage gasifier is suitable for gasifying bituminous coals such as non-caking coal, weakly caking coal, long bituminous coal, and can also gasify lignite with good quality. Compared with the one-stage furnace, the two-stage furnace can choose a wider range of coal types, but the specific index requirements for gasification coal are stricter. 

       1. Coal particle size 

       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 coal particle size requirements 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. On the other hand, it is impossible to ensure that the coal is retorted evenly and fully, which affects the gasification effect of the two-stage gasifier. 

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