Drying and gas or vapor contact with solids – Process – Gas or vapor contact with treated material
Patent
1999-04-28
2000-12-05
Gravini, Stephen
Drying and gas or vapor contact with solids
Process
Gas or vapor contact with treated material
34455, 34114, 34119, 34122, D06F 5800
Patent
active
061549819
ABSTRACT:
A method and an apparatus for improving the drying capacity of a hood covering a Yankee cylinder (10), when drying a web with a Yankee cylinder while conveying the web over the cylinder by blowing hot air jets against the web at the region of a first hood (12), said hot air jets having a temperature mainly <550.degree. C. The drying capacity of the drying hood is increased by blowing hot air jets against the web conveyed over the cylinder at the region of a second hood, a so called hot air hood (14, 14', 14"), said hot air jets having a a temperature which is higher than the temperature of the hot air jets blown against the web at the first hood, or mainly >550.degree. C.
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Heikkila Pertti
Milosavljevic Nenad
Gravini Stephen
Valmet Corporation
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