公开(公告)号：EP0627029A4

公开(公告)日：1995-12-06

申请号：EP92914663

申请日：1992-04-24

申请人： UNION CAMP PATENT HOLDING

发明人： WHITE DAVID C ,  PIKULIN MICHAEL ,  GANDEK THOMAS P ,  FRIEND WILLIAM H

IPC分类号： D21C3/26 ,  B01F7/00 ,  B01F15/00 ,  D21C20060101 ,  D21C7/00 ,  D21C9/10 ,  D21C9/153

CPC分类号： B01F7/00141 ,  B01F7/001 ,  B01F7/00433 ,  D21C9/10 ,  D21C9/153

摘要： An apparatus and method for bleaching high consistency lignocellulosic pulp using ozone supplied in an ozone containing gas. The bleaching reactor apparatus according to the invention is a generally cylindrical vessel (42A, 42B) with a rotatable shaft (48B) having radially extending paddles (52B) or other conveying elements arranged in a configuration to minimize axial dispersion of the pulp and maximize radial dispersion of the pulp to provide a radially dispersed plug flow of pulp through the reactor in the presence of the ozone to provide substantially uniformly bleached pulp.