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化学预浸渍工艺对杉木高浓盘磨解离性能的影响

LU Yubin HAN Shanming SHEN Kuizhong LIANG Long FANG Guigan WU Ting

林产化学与工业Issue(6)：63-69,7.

林产化学与工业Issue(6)：63-69,7.DOI:10.20195/j.issn.0253-2417.2024163

化学预浸渍工艺对杉木高浓盘磨解离性能的影响

Effect of Chemical Pretreatment on the High-consistency Refining and Dissociation Behavior of Cunninghamia lanceolata(Lamb.)Hook

LU Yubin ¹HAN Shanming ²SHEN Kuizhong ²LIANG Long ²FANG Guigan ²WU Ting²

作者信息

1. Institute of Chemical Industry of Forest Products,CAF||Key Lab.of Biomass Energy and Material,Jiangsu Province||Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration||National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass||Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing 210042,China||International office of Nanjing Tech University,Nanjing 211800,China
2. Institute of Chemical Industry of Forest Products,CAF||Key Lab.of Biomass Energy and Material,Jiangsu Province||Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration||National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass||Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing 210042,China
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摘要

Abstract

Three chemical pretreatment methods—alkaline sulfite(AS),sulfite(S),and alkaline peroxide(AP)—were applied to Cunninghamia lanceolata,and their effects on refining dissociation behavior were evaluated through refining energy consumption,pulp physical properties,fiber size,and morphology.Results showed that,in terms of tensile index,the AP process was the most energy-efficient,achieving energy savings of 38.4%,18.5%,and10.7%compared to refiner mechanical pulp(RMP),AS,and S processes,respectively,at a tensile index of 10 N·m/g.The S process resulted in pulp with higher bulk,while the AP process offered both energy efficiency and enhanced pulp strength:at 305 mL Canadian standard freeness(CSF),tensile,burst,and tear indices reached 12.56 N·m/g,0.61 kPa·m2/g,and 2.48 mN·m2/g,representing increases of 120%,110%,and 70%over the RMP process.Microstructural analysis of fiber cell walls during refining suggested two dissociation pathways:sulfite pretreatment caused separation mainly in the compound middle lamella(CML),requiring CML breakdown before fibrillation,whereas alkaline peroxide induced separation within the secondary wall(mainly the S2 layer),facilitating internal and external fibrillation and improving fiber bonding.This difference in separation location may explain the energy savings and strength improvements observed with alkaline peroxide pretreatment.

关键词

杉木/机械法制浆/化学预浸/碱性过氧化氢/纤维形貌

Key words

Cunninghamia lanceolata(Lamb.)Hook./mechanical pulping/chemical pretreatment/alkaline hydrogen peroxide/fiber morphology

分类

化学化工

引用本文复制引用

LU Yubin,HAN Shanming,SHEN Kuizhong,LIANG Long,FANG Guigan,WU Ting..化学预浸渍工艺对杉木高浓盘磨解离性能的影响[J].林产化学与工业,2025,(6):63-69,7.

基金项目

中央财政林业科技推广示范资金项目(苏[2023]TG07) （苏[2023]TG07）

林产化学与工业

OA北大核心

ISSN：0253-2417

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