Paper Info
Title
New and Improved Models for All Stages in Full ECF Bleaching Sequences of Softwoods and Hardwoods
Abstract
This study presents new and improved semi-empirical mathematical models for all the chlorine dioxide stages and extraction stages (including oxygen and/or peroxide reinforced) incorporated in a full Elemental Chlorine Free (ECF) bleaching sequence simulator developed in EFPG. The simulator predicts variations of Kappa number, pH, brightness, bleaching chemical consumption and COD at each step of multistage ECF bleaching sequences. The first purpose of this work was to improve kinetic and stoichiometric equations, involved in the chlorine dioxide stages (Do, D1, D2), for their predictability for different kinds of softwood and hardwood pulps. The second purpose was to model the extraction stages with or without oxygen and/or hydrogen peroxide reinforcement (E, EO, EOP, EP). The results predicted fit very closely to a wide range of laboratory and mill bleaching data and the predictability was extended to a greater variety of pulps (softwoods and hardwood pulps, kraft or other alkaline pulps).
Year
DOI
Venue
2008
10.1109/UKSIM.2008.7
UKSim
Keywords
Field
DocType
differential equations,brightness,data mining,kinetic theory,hydrogen peroxide,mathematical model,softwood,extraction,oxygen,chemical elements,kinetics,predictive models
Softwood,Elemental chlorine free,Pulp and paper industry,Computer science,Kappa number,Chlorine dioxide,Kraft paper,Hydrogen peroxide,Hardwood,Structural engineering,Peroxide
Conference
ISSN
Citations 
PageRank 
2381-4772
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Sandeep Jain16211.62
Gérard Mortha200.68
Christophe Calais300.68