DRYER SECTION AND METHOD FOR DRYING A WEB OF FIBROUS MATERIAL, AND MACHINE HAVING SUCH A DRYER SECTION

摘要

A dryer section for drying a web of fibrous material is provided, which has at least one drying unit for reducing the moisture content of the web by means of convection drying. The drying unit has at least one nozzle for applying a drying fluid to the web, at least one discharge device for the moist air produced during convection drying, and transport means for moving the web relative to the drying unit. The drying unit has at least one ultrasonic generator, which is arranged, for excitating vibrations in the drying fluid, in the region of the nozzle in such a manner that the reduction of the moisture content by ultrasound can be supported over the entire width of the web.

主权项

1. A dryer section for drying a web of fibrous material, especially of paper, cardboard, tissue/sanitary paper comprising
at least one drying unit for reducing the moisture content of the web by means of convection drying, wherein the drying unit has at least one nozzle for applying a drying fluid to the web, at least one discharge device for the moist air being produced during the convection drying and transport means to move the web relative to the drying unit,characterised in that the drying unit has at least one ultrasound generator, which is arranged, to excite vibrations of the drying fluid, in the region of the nozzle in such a way that the reduction in the moisture content over the entire web thickness can be assisted by ultrasound.