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However, PHK also poses some limitations, such as increase in the total dissolving pulp production time because of the additional prehydrolysis steps (the total reaction time of 160–200 min and 240–270 min for conventional kraft pulping and PHK pulping, respectively) and reduction in the dissolving pulp yield (on average 38%) as compared with 48% for the conventional kraft pulping.
According to Terezo and Szücs (2008), an average increase of 35 m3 per hectare per year has been observed for S. amazonicum. Vidaurre et al. (2012) reinforced that the paricá growth rate is, on average, 30 to 35 m3 per hectare per year, even without the adoption of breeding programs commonly used for large-scale crops in Brazil.
28 de jun. de 2019 · The bleached softwood k raft p ulps had higher fibre. strength and fibre len gth than the hardwood kraft pulps, whose fibres h ad a h igher fibre bonding a bility. The water. absorption and bu lk ...
1 de oct. de 2011 · Semantic Scholar extracted view of "Production of high yield bleached hardwood kraft pulp: Breaking the kraft pulp yield barrier" by P. Hart. Skip to search form Skip to main content Skip to account menu ... Production of high yield bleached hardwood kraft pulp: Breaking the kraft pulp yield barrier @inproceedings ...
6 de ene. de 2021 · In this laboratory study, a hardwood bleached kraft pulp (HBKP) was converted to dissolving pulp by removing hemicellulose using organic electrolyte solutions (OES), consisting of ionic liquid (1-ethyl-3-methylimidazolium acetate (EminAc)) and a polar organic solvent γ-valerolactone (GVL). The molar ratio of GVL/EmimAc, and temperature have significant effect on the swelling of HBKP fibers ...
1 de jun. de 2005 · The use of 12-year-old Pinus tecunumanii (Eguiluz e Perry) grown in Colombia was evaluated for bleached kraft pulp production. Kraft pulps of kappa number 30 ± 1 were produced, and oxygen ...
20 de feb. de 2024 · Size and Thickness: Common wood chips used in pulp production range from 12 to 25 mm in length and 2 to 10 mm in thickness. Pre-steaming: ... Applications: Polyurethane industry and foam production. B. BLEACHED KRAFT PAPERS Paper Grades for Bleached Kraft Paper: Machine Glazed (MG) Smooth Finished (SF) Machine Finished (MF)
