期刊论文

Study on Drying Characteristics of Fast-growing Poplar During Conventional Superheated Steam Drying

中文

林产工业

1001-5299

2017

44

10

27-30

10.19531/j.issn1001-5299.201710006

国家林业局948项目（2014-4-50）； 林业科学技术国家级推广项目（[2015]51号）；

本校为第一机构

以20 mm厚速生杨木锯材为研究对象,采用连续常压过热蒸汽干燥和常规-过热蒸汽联合干燥两种方法对其进行干燥处理,系统研究了干燥方法和条件对杨木锯材干燥特性的影响规律.结果表明,过热蒸汽干燥的温度及含水率变化可分为三个阶段,联合干燥时间较常规干燥缩短2.5～3倍,能显著提高干燥速率;联合干燥质量均可达到锯材干燥一级标准,采用常规-过热蒸汽联合干燥方法可以实现杨木锯材的快速高效干燥处理.

In this study, the 20 mm thick poplar timber were treated by superheated steam drying in atmospheric pressure and combined drying of conventional-superheated steam respectively. The effects of drying methods and conditions on drying characteristics of poplar timber were studied systematically. The results showed that the temperature and moisture content variation of poplar wood could be divided into three periods in the drying process. The combined drying time was 2.5 to 3 times shorter than that of conventional drying, and the drying rate could be remarkably improved. The drying qualities of ...