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Enhancement of Drying Rate in Paper Machines with Multi-Functional Radial Jet Reattachment Blow Boxes — Theoretical Analysis
Authors:J. Seyed-Yagoubi   R. H. Page  M. C. Asensio  E. W. Thiele
Affiliation: a Drying Research Center Department of Mechanical Engineering Collage Station, Texas, U.S.A.b ABB Industrial Drying Appleton, Wisconsin, U.S.A.
Abstract:Multi-functional radial jet reattachment blow boxes deliver a dry air into the pockets of the dryer section of a paper machine by impinging directly onto the unsuppned sheet in the open diaw. The air flow also maintains or improves the sheet swbility.

The iadial jet reattachment blow box technology pmvides a significant enhancement in drying rates. The theoretical drying results are presented in terms of average drying rates, moisture and temperature pmfiles along the drying section with and without the presence of the multi-functional radial jet reaaachment blow boxes. The thcorclical results indicate that enhancements of drying rates within the range of 8% to 25% are feasible depending on ihe operating conditions and machine configuration.
Keywords:Air Impingement  Paper Drying  Pocka Ventilation  Sheet Fluttering
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