Pulp bleaching chemical wood using chlorine / chlorine dioxide and then ozone.

摘要

The present invention provides improvements in the preparation wood pulp cellulose CHEMISTRY FOR USE IN THE MANUFACTURE OF PAPER AND SPECIFICALLY TO IMPROVE QUALITY OF A PULP KRAFT PAPER THAT HAS BEEN SUBJECT TO A STAGE OF LAUNDERING CHLORINE DIOXIDE / CHLORINE AND then subjected to ozonation before a stage extraction bleaching sequence. IMPROVED PULP The present invention shows chlorine residues any organic FULLY REDUCED WOOD PULP AND ORGANIC HALIDES Adsorbed (AOX) in the effluent and has good gloss and viscosity. THE ADVANTAGES of the present invention can be carried out by a bleaching sequence employing a MINIMUM OF STAGES, call (D - C) ZED O DCZED WITH CAPITAL INVESTMENT relatively lower than you used to.