Positive and negative aspects of soda/anthraquinone pulping of hardwoods

被引：36

作者：

Francis, R. C. ^{[1
]}

Bolton, T. S. ^{[1
]}

Abdoulmoumine, N. . ^{[1
]}

Lavrykova, N. ^{[1
]}

Bose, S. K. ^{[1
]}

机构：

[1] SUNY Coll Environm Sci & Forestry, Empire State Paper Res Inst, Fac Paper & Bioproc Engn, Syracuse, NY 13210 USA

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 17期

关键词：

kraft pulping; non-sulfur pulping; prehydrolysis; oxygen delignification; ClO2; bleaching;

D O I：

10.1016/j.biortech.2008.02.055

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The positive aspects of the non-sulfur soda/anthraquinone (SAQ) process are mostly tied to improved energy efficiency while lower pulp brightness after bleaching is its most significant drawback. A credible method that quantifies bleachability as well as an approach that solves the problem for SAQ pulps from hardwoods will be described. A straight line correlation (R-2 = 0.904) was obtained between O-2 kappa number and final light absorption coefficient (LAC) value after standardized OD0EpD1 bleaching of nine hardwood kraft pulps from three laboratories and one pulp mill. The bleachability of pulps from four different soda processes catalyzed by anthraquinone (AQ) and 2-methylanthraquinone (MAC) was compared to that of conventional kraft pulps by comparing O-2 kappa number decrease and final LAC values. It was observed that a mild hot water pre-hydrolysis improved the bleachability of SAQ pulps to a level equal to that of kraft. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：8453 / 8457

页数：5

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