Method for drying a fibrous web
AssigneeVoith Patent GmbH
InventorsLuiz C. Da Silva, Thomas Scherb, Ronaldo Parucker, Oswaldir Rizzatto
Life of this patent
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Abstract
A method for drying a fibrous web, especially a paper, cardboard or tissue web, the moving web is treated with hot air from a hot air hood in the area of a upstream pre-defined drying zone, and is subsequent carried to the drying zone in a downstream drying cylinder, especially a Yankee-Cylinder, to which an additional hood is allocated and in whose area the fibrous web is dried further. The hot air for the hot air hood allocated to the upstream drying zone is recovered, at least partially, from the exhaust air of the hood allocated to the downstream drying cylinder.
Claims28
A method for drying a fibrous web, the fibrous web being one of a paper, a cardboard and a tissue web, the method comprising the steps of:
- treating the moving fibrous web with hot air from a hot air hood in an area of a upstream predefined drying zone;
- and
- carrying the fibrous web subsequent to the drying zone to a downstream drying cylinder to which an additional hood is allocated and in whose area the fibrous web is dried further, the drying cylinder being downstream from the upstream drying zone;
- and
- recovering the hot air for said hot air hood which is allocated to the upstream drying zone at least partially from said additional hood, the hot air for the hot air hood which is allocated to the upstream drying zone is at least partially recovered from exhaust air of the additional hood which is allocated to the downstream drying cylinder.
Dependencies are inferred from the claim text.