关键词: 底开门, 火车卸煤, 受煤坑, 工艺布置

Abstract: This paper gives a basic introduction on the unloading process of bottom dump hopper wagon. Combined with the design of coal unloading system with bottom dump hopper in the coal indirect liquefaction project of Ningxia Coal Industry Group, it concludes the design ideas of large-scale bottom dump hopper wagon unloading system and provides solid theoretical basis and practical reference for the similar designs in China.