Volume 7 Issue 3
Jul.  2022
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Wenchao Jia, Miaofang Zhou, Chenfeng Yang, He Zhang, Meihong Niu, Haiqiang Shi. Evaluating process of auto-hydrolysis prior to kraft pulping on production of chemical pulp for end used paper-grade products[J]. Journal of Bioresources and Bioproducts, 2022, 7(3): 180-189. doi: 10.1016/j.jobab.2022.05.002
Citation: Wenchao Jia, Miaofang Zhou, Chenfeng Yang, He Zhang, Meihong Niu, Haiqiang Shi. Evaluating process of auto-hydrolysis prior to kraft pulping on production of chemical pulp for end used paper-grade products[J]. Journal of Bioresources and Bioproducts, 2022, 7(3): 180-189. doi: 10.1016/j.jobab.2022.05.002

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

doi: 10.1016/j.jobab.2022.05.002
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  • Corresponding author: E-mail address: shihq@dlpu.edu.cn (H. Shi)
  • Received Date: 2022-02-05
  • Accepted Date: 2022-03-19
  • Rev Recd Date: 2022-03-06
  • Available Online: 2022-05-16
  • Publish Date: 2022-07-31
  • 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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