毕业设计 年产20万吨合成氨造气工段工艺设计

....................265.6消耗定额........................................................275.7吹净时间核算....................................................275.8废热锅炉的热量衡算..............................................285.8.1设己知条件.................................................285.8.2热量衡算...................................................295.8.3热量平衡和总固体平衡.......................................325.9夹套锅炉的物料及热量衡算........................................335.9.1?己知条件...................................................335.9.2产气量及消耗两计算.........................................33设备计算..................................................-34-6.1?煤气炉指标计算..............................................-34-6.2煤气台数的确定..............................................-35-6.3空气鼓风机的选型及台数确定...................................-35-