公开(公告)号：EP0494519A1

公开(公告)日：1992-07-15

申请号：EP91311614.1

申请日：1991-12-13

Applicant: SCOTT PAPER COMPANY

Inventor： Tschirner, Ulrike ,  Wilder, Harry

IPC: D21B1/16 ,  D21C9/10 ,  D21C9/16

CPC classification number: D21C9/1042 ,  D21B1/16 ,  D21C9/163

Abstract: There is disclosed a high yield pulping process comprising impregnating chips with an alkaline peroxide solution containing stabilizers for peroxide followed by mechanical defibration, in which the wood chips are pretreated prior to peroxide impregnation, said pretreatment comprising;

(a) impregnating the chips with an impregnation solution consisting essentially of a chelating agent for metallic ions; and,
(b) expressing from the chips chelating agents and metallic ions.

Abstract translation: 公开了一种高产率制浆方法，包括用含有过氧化物稳定剂的碱性过氧化物溶液浸渍碎片，然后进行机械分离，其中在过氧化物浸渍之前对木屑进行预处理，所述预处理包括： （a）用基本上由金属离子的螯合剂组成的浸渍溶液浸渍碎片; 和（b）从芯片上螯合螯合剂和金属离子。 一个