| 摘要 |
A rotary drying apparatus for drying a fibrous granular material is described. The apparatus provides a first substantially cylindrical drum having a first drum inlet for introducing fibrous or granular material into the drum and a first drum outlet, a second substantially cylindrical drum having a second drum inlet and a second drum outlet through which process gas and dried fibrous or granular material is discharged after passing through the first drum and then the second drum, the first drum and the second drum each having an axis of rotation at an angle to the horizontal and each being arranged to rotate about their respective axes. There is provided a plenum located between the first and second cylindrical drums and arranged in fluid communication with the first drum outlet and the second drum inlet, the plenum having an air inlet fan located at a plenum inlet and arranged to urge process gas from the plenum into the first and second cylindrical drums. The process gas is urged through the first cylindrical drum in a direction counter to the direction of the process product flow and process gas is urged through the second cylindrical drum in a direction co current with the direction of the process product flow. An efficient drying apparatus and operation is achieved. |
