超临界CO₂流体在木材干燥中的应用

编号 lyqk008076

中文标题 超临界CO₂流体在木材干燥中的应用

作者 张静雯  刘洪海  杨琳 

作者单位 南京林业大学家居与工业设计学院, 南京 210037

期刊名称 世界林业研究 

年份 2019 

卷号 32

期号 6

栏目编号 1

栏目名称 专题论述 

中文摘要 超临界流体是指高于其临界压力和临界温度的流体，CO₂是最常用的超临界流体。超临界CO₂流体干燥法可以有效减少气液界面张力，在有效脱除水分的同时最大限度地减少因毛细管表面张力导致材料微观结构的改变。文中综述了利用超临界CO₂流体干燥木材的工艺，以及超临界CO₂流体对木材渗透性和干燥特性的影响；重点综述了近几年来利用超临界CO₂干燥木材的机理，包括使用流体动力学模型预测干燥过程以及使用核磁共振观察水分和CO₂的传递规律，以期为超临界流体干燥木材提供理论参考。

关键词 超临界CO₂  木材干燥  干燥特性  干燥机理  木材渗透性 

基金项目 国家自然科学基金面上项目（31870545）；2019江苏省研究生科研与实践创新计划推荐项目。

英文标题 Application of Supercritical CO₂ Fluid to Wood Drying

作者英文名 Zhang Jingwen, Liu Honghai, Yang Lin

单位英文名 College of Furnishing and Industrial Design, Nanjing Forestry University, Nanjing 210037, China

英文摘要 Supercritical fluid is a special fluid which is above its critical pressure and critical temperatures, and CO₂ is the most commonly used supercritical fluid. The supercritical CO₂ fluid drying method can effectively reduce the gas-liquid interfacial tension, and effectively remove the moisture while minimizing the change of the microstructure of materials caused by the capillary surface tension. This paper reviews the process of drying wood using supercritical CO₂ fluids and the effects of supercritical CO₂ fluids on wood permeability and drying characteristics. The focus is put on the mechanism of drying wood using supercritical CO₂ in recent years, including the use of fluid dynamics models to predict the drying process and the observation of moisture and CO₂ transfer using nuclear magnetic resonance. This study is expected to provide theoretical support for the study of drying wood with supercritical fluid.

英文关键词 supercritical CO₂;wood drying;drying characteristics;drying mechanism;wood permeability

起始页码 37

截止页码 42

投稿时间 2019/2/20

最后修改时间 2019/4/4

作者简介 张静雯,女,硕士,研究方向为速生木材干燥,E-mail:blueblueblue_1996@163.com。

通讯作者介绍 杨琳,女,副教授,博士,研究方向为木材干燥及木材改性,E-mail:forest-yang@163.om。

E-mail 杨琳,女,副教授,博士,研究方向为木材干燥及木材改性,E-mail:forest-yang@163.om。

分类号 S781.71;TS652

DOI 10.13348/j.cnki.sjlyyj.2019.0052.y

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