Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1988-10-11
1990-01-09
Bennet, Henry A.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34114, 34116, 34123, F26B 304
Patent
active
048918911
ABSTRACT:
A dryer section apparatus is disclosed for drying a web. The apparatus includes a first and second tier of dryers which include, respectively, a first, second dryer and a third dryer. The arrangement is such that the web moves from the first dryer towards and around the third dryer and subsequently to and around the second dryer. A transfer roll is disposed between the first, second and third dryers such that the distance between the transfer roll and the first dryer is less than the distance between the transfer roll and the second dryer. A dryer felt extends contiguously with the web around the first dryer with the felt then extending around the transfer roll and thereafter around the second dryer such that a pocket is defined between the web extending between the dryers, the third dryer and the felt. A blow box is disposed between the roll and the the first and second dryers with the box being disposed outside the pocket for blowing a first current of air into the pocket through the felt extending between the first dryer and the roll. The first current of air augments a first flow of air flowing into the pocket through the felt extending between the first dryer and the roll to balance a second flow of air flowing out of the pocket through the felt extending between the roll and the second dryer.
REFERENCES:
patent: 4539762 (1985-09-01), Esitelinen et al.
patent: 4669189 (1987-06-01), Wedel
Archer David J.
Beloit Corporation
Bennet Henry A.
Campbell Raymond W.
Solleato John
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