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| A New Kinetics Model of Oxygen Delignification of Fast-growing Eucalyptus Kraft Pulp |
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| DOI：10.11980/j.issn.0254-508X.2012.06.001 |
| Key Words:oxygen delignification residual alkali kappa number kinetics model |
| Fund Project:本课题为国家自然科学基金（21076091）资助项目。 |
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| Abstract:The effects of temperature, oxygen pressure, sodium hydroxide charge and reaction time on oxygen delignification of the fast-growing eucalyptus kraft pulp were investigated. It was found that the concentration of sodium hydroxide during oxygen delignification had a linear relationship with the natural logarithm of kappa number that standing for the residual lignin content in the pulp. Based on the information from the above investigation and observation, a new kinetics model of oxygen delignification was developed. The results showed that the present model could provide a good description for the oxygen delignification of the eucalyptus kraft pulps at different process conditions (R2=0.980). Compared to the traditional kinetics models of oxygen delignification, the present model minimized the number of kinetics parameters in the mathematical equation, which made the model much simpler and reliable. |
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