METHOD AND APPARATUS FOR ESTIMATING AN OPTIMAL DOSAGE OF BLEACHING AGENT TO BE USED IN A PROCESS FOR PRODUCING PULP

摘要

A method and an apparatus for estimating an optimal dosage of bleaching agentto be used in a process for producing pulp of a required brightness valueinvolve a set of wood chip properties characterizing the wood chips asestimated by a measurement system. Corresponding wood chip properties data arefed at the inputs of a predictive model (10) including a neural network (12),as well as an initial dosage value of the bleaching agent. The predictivemodel (10) generates a predicted brightness value of pulp to produce from theinspected wood chips, to estimate the optimal bleaching agent dosage for whichthe predicted brightness value substantially reaches the required brightnessvalue. A method and system for controlling the bleaching of pulp arerespectively based on the same estimation method and apparatus.