| 摘要 |
<p>Apparatus for the drying of particulate materials in superheated steam in a closed container (1). The container comprises a series of upwardly-open, elongated and substantially vertical processing cells (2) which are disposed around a central part with a heat exchanger (3). The last of these processing cells (2) has a closed bottom and is the discharge cell (4), while the remainder have a bottom (5) through which steam can permeate. Superheated steam from the heat exchanger (3) is blown up through the steam-permeable bottoms (5), whereby the particle-formed material is dried during passage through the processing cells. The upper part of the container contains a dust separation system in the form of a cyclone (8) for the cleaning of the steam which flows up from the processing cells, before the steam is returned through the heat exchanger. The supply of steam to the cyclone (8) takes place in an upper part of the cyclone (8), so that larger, moist particles will be separated and led back to the processing cells before the steam is supplied to the cyclone.</p> |
