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A contribution to the modeling of kraft pulping
Author(s) -
Agarwal Niraj,
Gustafson Rick
Publication year - 1997
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.5450750104
Subject(s) - kappa number , kraft process , alkalinity , pulp (tooth) , kraft paper , pulp and paper industry , soda pulping , residual , viscosity , process engineering , environmental science , computer science , materials science , chemistry , engineering , composite material , algorithm , organic chemistry , medicine , pathology
This paper presents a mathematical model for pulping that considers the effect of alkali diffusion and chemical reaction. An approximation for 3‐dimensional diffusion in wood chips is tested against pulping data. A method for predicting pulp viscosity is also presented. The model simulates the effect of key pulping variables on pulp kappa number, viscosity, yield, residual alkalinity and pulping uniformity. Experimental data from a number of sources are successfully predicted by the model.