A process of treating a cellulose-lignin pulp. In an ozone stage, the pulp is contacted with ozone to bleach and delignify the pulp. The ozone stage is conducted without the addition of a peroxide bleaching agent. A chelant is introduced into the ozone stage to improve selectivity of the delignification.
申请公布号
WO2007070527(A3)
申请公布日期
2008.11.13
申请号
WO2006US47416
申请日期
2006.12.12
申请人
UNIVERSTIY OF MAINE SYSTEM BOARD OF TRUSTEES;HUTTO, DWANE, SCOTT;ZOU, HAIXUAN
