| 摘要 |
The invention relates to a spray-drying device ( 1 ) having a vertical drying chamber ( 2 ), material-atomization means ( 4 ) and drying-gas feed ( 6 ) means. Filter elements ( 11 ) are present in order to filter the fine particles out of the flow of drying gas ( 7 ). The fine particles are periodically removed from the filter elements ( 11 ) and collected in fine-particle collection means ( 10 ) in such a manner that they remain separate from the main flow of spray-dried material. In this way, it is possible to successfully control the properties of the spray-dried (main) material without it being undesirably influenced by the fine particles. |
