公开(公告)号：US3668063A

公开(公告)日：1972-06-06

申请号：US3668063D

申请日：1971-04-01

Applicant: SUNDS AB

Inventor： ENGSTROM HANS-ERIK

IPC: D21C9/147 ,  D21C9/10 ,  D21C3/26

CPC classification number: D21C9/1005 ,  D21C9/10

Abstract: Preliminary to being delivered by a ''''thick stock pump'''' means to a generally vertical bleaching vessel there is added to a cellulose pulp a fluid, such as steam, oxygen or a gaseous bleaching agent to flow countercurrent to the pulp in such manner that any air in the pulp is displaced and is replaced by bleaching agent before bleaching of the pulp in the bleaching vessel.

Abstract translation: 由“厚库存泵”提供的初步意思是指通常垂直的漂白容器，向纤维素纸浆中加入流体，例如蒸汽，氧气或气态漂白剂，以与纸浆逆流流动，使得任何空气 在纸浆漂白过程中，纸浆被漂白后被漂白剂置换。