| 摘要 |
A continuous two-stage peroxide bleaching process operated in a single bleach plant for producing a bleached pulp of high brightness, having a second stage bleaching step (16) using a high charge (15) of peroxide followed by a washing stage (21) to recover the residual liquor (24) containing a substantial amount of the applied peroxide. The residual liquor is recycled and used for bleaching in the first stage (10). Only a portion (13) of the pulp bleached in the first stage is treated in the second stage. Two or more bleached pulp products can be produced simultaneously. |
