Chemithermomechanical pulping process employing separate alkali and sulfite treatments
作者： Zenon C. Prusas
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摘要: A high yield chemithermomechanical (CTMP) process for obtaining strength hardwood pulps is disclosed wherein chips are subjected to a two-stage chemical treatment prior defibration, the first consisting of chip impregnation and reaction with an alkaline liquor followed by second stage sulfite and/or bisulfite; in one embodiment peroxide added enhance brightness.
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