Evaluating process of auto-hydrolysis prior to kraft pulping on production of chemical pulp for end used paper-grade products

IF 20.2 Q1 MATERIALS SCIENCE, PAPER & WOOD Journal of Bioresources and Bioproducts Pub Date : 2022-08-01 DOI:10.1016/j.jobab.2022.05.002
Wenchao Jia , Miaofang Zhou , Chenfeng Yang , He Zhang , Meihong Niu , Haiqiang Shi
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引用次数: 4

Abstract

The objective of this work is to systematically evaluate the performance of the hydrolysis-based kraft pulping process and associated pulp and black liquor characteristics. Acacia wood chips were auto-hydrolyzed under various severities, then the hydrolyzed wood chips were kraft pulping. The results indicated that the yield of pulp significantly dropped with intensifying the auto-hydrolysis severity. Meanwhile, the removal rate of pentosan reached 98.6% in the screened pulp at the P-factor of 1 000. The fiber length, fines and fiber crimp of the screened pulp were not affected by the auto-hydrolysis treatment. Auto-hydrolyzed pulps deteriorated fibrillation and beating response of the pulp in a refining process. However, fiber length and fines changed obviously after beating treatment. After auto-hydrolysis, the tensile index of the paper matrices decreased, some particle substances were found on the surface of the pulp fiber, and the solid and organic content of the black liquor were improved.

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评价硫酸盐制浆前自动水解工艺对最终用纸级产品化学浆生产的影响
本文的目的是系统地评价以水解为基础的硫酸盐制浆工艺的性能以及相关的纸浆和黑液特性。对不同程度的金合欢木片进行自水解,然后对水解后的金合欢木片进行硫酸盐制浆。结果表明,随着自水解程度的增加,纸浆得率显著下降。在p因子为1 000的条件下,对戊聚糖的去除率达到98.6%。经自水解处理后,筛浆的纤维长度、细度和卷曲度均不受影响。自水解纸浆使纸浆在精炼过程中纤维性和跳动反应恶化。但经过热处理后,纤维长度和细度发生了明显变化。自水解后,纸基体的拉伸指数下降,纸浆纤维表面出现颗粒状物质,黑液的固含量和有机物含量有所提高。
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来源期刊
Journal of Bioresources and Bioproducts
Journal of Bioresources and Bioproducts Agricultural and Biological Sciences-Forestry
CiteScore
39.30
自引率
0.00%
发文量
38
审稿时长
12 weeks
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