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Principle and application prospect on wood drying of displacement drying
Author(s): 
Pages: 14-16
Year: Issue:  6
Journal: ENERGY CONSERVATION

Keyword:  置换干燥原理木材干燥;
Abstract: 置换干燥是利用某种置换剂来置换湿物料中水分的一种非热力干燥方法.其干燥机理有两种形式:"卷起-浮升"机制和"颈缩"机制,主要特点为能量消耗低、干燥效率高、干燥时间短,且在被干燥物料表面不留水分斑迹.置换干燥在电子、航天、机械等方面已得到广泛应用.利用置换干燥方法干燥木材具有很强的吸引力和广阔的应用前景.为了降低木材干燥过程的能量消耗,提高出材率和产品质量,对不同的需干燥的木材应确定合理的干燥时间,选择合适的置换剂,并采取多级萃取的逆流结构.
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