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Experimental design techniques applied to the domtar dryformer
Author(s) -
Grandmaison E. W.,
Kerr R. B.,
Robillard M.
Publication year - 1984
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450620208
Subject(s) - fractional factorial design , factorial experiment , softwood , statistics , mathematics , design of experiments , variables , main effect , aliasing , kraft process , pulp and paper industry , computer science , kraft paper , engineering , filter (signal processing) , computer vision
Abstract The variables affecting the peformance of the Domtar pilot plant dryformer have been examined using experimental design techniques. A total of fifteen variables were incorporated in a 2 15−11 fractional factorial design with a reverse sign design to obtain the main effects of variables free of aliasing with other main effects and two‐factor interactions. An estimate of experimental error was obtained from repeated runs of the primary 2 15−11 design conditions. The experiments were performed with bleached softwood kraft pulp and the dependent variables included the production rate at good formation, the production rate with adequate nit removal, the machine direction basis weight variation and the average formation characteristics of the dryformed web product. Of the fifteen variables examined, all but three have some effect on at least one of the dependent variables and there were strong indications that two‐factor interactions played an important role in describing the operation of this dryformer.