| 摘要 |
PROBLEM TO BE SOLVED: To provide a wet fuel fluid bed drying device for drying wet fuel raw material such as raw coal of brown coal to such a degree of moisture content that it can be crushed with a breaking device by the effective utilization of characteristics of a fluid bed without rough breaking of the wet fuel raw material.SOLUTION: A brown coal (wet fuel) fluid bed drying device 10 for feeding brown coal raw material into a fluid bed in a furnace 12, flowing heat source into a heat transfer pipe 31 arranged in the furnace 12, heating and drying it is constituted such that an eye-board 13 for injecting fluid gas to form the fluid bed is formed as a slant surface, the heat transfer pipe 31 comprises a group 30 L of furnace inner bottom side pipes arranged in spaced-apart clearance to allow the maximum particle diameter of the brown coal raw material to be passed through them and a group 30 U of furnace inner upper bed pipes while being more closely arranged in their spaced-apart relation than that of the furnace inner bottom side pipes 30 L. |
