Model-based optimizationof Kamyr digester operation, 2002 Kraft Pulp Yield Symposium

Please Note: This document will be available in PDF format in the "My Electronic Documents" link on the home page once your order has been completed. Please make sure you have the latest version of Acrobat Reader. Click on the Acrobat Reader icon to check for the latest version, it’s FREE. To print a hardcopy of a PDF file correctly you must have a postscript printer. If you are not sure if your printer is a postscript printer please refer to your owner’s manual.

In the Kamyr digester used for kraft pulping processes, there are strong interactions between the many process variables, long time delays, and frequent disturbances in the operation. Steady-state operation is, therefore, difficult to obtain. A complex kinetics-diffusion, simulation model developed for the Kamyr digester operation was coupled with a continuous dynamic programming algorithm to find the optimum of a continuous, multivariable, nonlinear yield function subject to constraints.