Drying Doctor, a multiple technique simulator of the paper drying process, has been developed at the Pulp and Paper Research Centre, McGill University. This thesis examines the different approaches to the modeling of this process, provides a rigorous validation of the simulation program and demonstrates its utility with four containerboard machines of Norampac Inc. / Several features differentiate this simulator from others. When heavy grades of paper are produced or when high intensity drying processes are used even with thin sheets, substantial thickness direction gradients of moisture content and temperature develop across the sheet, demonstrating the necessity of a fully microscale model such as employed by Drying Doctor. / Using industrial and laboratory data for a variety of paper grades and drying processes, 31 uncalibrated simulations for machine speed showed a standard deviation of only 3.4% from known speeds. Through simulation of modified operating conditions such as steam pressure, spoiler bars, pocket air conditions and addition of the high intensity drying process, Yankee air impingement dryers, substantial production rate increases for the industrial partner's papermachines through use of the Drying Doctor simulator were shown possible.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.21325 |
| Date | January 1999 |
| Creators | Sidwall, Shaun. |
| Contributors | Douglas, W. J. M. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Engineering (Department of Chemical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001654577, proquestno: MQ50661, Theses scanned by UMI/ProQuest. |
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