this purpose by lines 140 142 and 150 the d 1 seal tank liquor is partially passed by line 152 to the d 1 bleaching tower 16 a portion of the liquor passes by lines 154 156 and 158 to the showers 106 on the e 1 washer 24 while another portion of the liquor passes by lines 154 156 and 160 to the first showers 106 on the d c washer 22 part of the d 1 seal tank liquor passes by lines 154 and 162 to the pulp in line 84 passing from the d 1 bleaching tower to the d 1 washer 26 from the e 1 seal tank 34 part of the liquor passes by lines 163 164 and 166 to the last showers 106 on the d c washer 22 while another part passes by lines 163 164 and 168 to the pulp passing in line 76 from the e 1 extraction tower 14 to the e 1 washer 24 another part passes by line 170 to the e 1 extraction tower 14 while the remainder is discharged from the bleach plant by lines 163 and 172 for passage to the pulp mill recovery system liquor from the d c seal tank 32 partly passes by lines 174 and 176 to dilute the pulp passing.