METHOD OF PRODUCING LIGNOCELLULOSIC PULP FROM NON-WOODY SPECIES
High-yield chemimechanical lignocellulosic pulp is produced from non-woody species by cutting and screening the non-woody species, soaking them in an acidic aqueous solution preferably containing a chelating agent, treating the washed non-woody species with an alkaline peroxide solution containing a...
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Main Author | |
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Format | Patent |
Language | English French German |
Published |
15.10.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | High-yield chemimechanical lignocellulosic pulp is produced from non-woody species by cutting and screening the non-woody species, soaking them in an acidic aqueous solution preferably containing a chelating agent, treating the washed non-woody species with an alkaline peroxide solution containing a second chelating agent, and mechanical refining. To further increase the bleaching efficiency the non-woody species are impregnated with ozone or peracetic acid. The resulting pulp has a relatively high brightness while the consumption of peroxide is reduced compared to prior art processes. |
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Bibliography: | Application Number: EP19990915424 |