| 摘要 |
PROBLEM TO BE SOLVED: To provide a drying system effectively utilizing a leak gas without increasing a size of a processing device of the leak gas discharged from a rotary valve. SOLUTION: A rotary steam drier 1 comprises a rotary cylinder rotatable around a shaft center, and a heating pipe positioned in the rotary cylinder for communicating the steam. A gas injection pipe of a circular section, capable of injecting a stirring gas into the rotary cylinder while guiding the stirring gas, is disposed on a position along an inner peripheral face of the rotary cylinder. A rotary valve 85 for delivering a dried object to a pneumatic conveying device 81 side is disposed between the rotary steam drier 1 and the pneumatic conveying device 81, and one end of an air pipe 86 connected with a filter 88 at the other end, is connected with the rotary valve 85. The leak gas is supplied to the rotary steam drier 1 as the stirring gas K through the filter 88, the air pipe 86, and an air pipe 74. COPYRIGHT: (C)2010,JPO&INPIT
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