PROCESS FOR BLEACHING LIGNOCELLULOSE-CONTAINING NON-WOOD PULP

摘要

The present invention refers to a process for bleaching lignocellulose-containing pulp comprising pulp obtainable from lignocellulose-containing materials selected from the group consisting of non-wood with a peroxide-containing compound, where the pulp prior to the bleaching is treated with chlorine dioxide, characterised in that the pulp after the treatment with chlorine dioxide is treated in a separate stage with a chelating agent at a pH up to about 2.9 and washed between the chlorine dioxide treatment and chelating agent treatment.