海参过热蒸汽真空干燥装置的设计与试验

摘要

结合过热蒸汽干燥和真空干燥方式的特点,完成海参过热蒸汽真空干燥箱的设计.以海参为被干燥物料,进行不同工况下海参过热蒸汽真空干燥特性的试验研究,主要分析物料质量和脱水率的变化规律以及不同蒸汽温度下干燥速率的变化规律.结果表明:在相同真空度下,过热蒸汽温度越高,干燥速率越快,而且过热蒸汽干燥初期的速率最快.%The superheated steam vacuum drying chest has been designed by combining the good qualities of the superheated steam drying and the vacuum drying. Some kind of sea cucumber has been dried by superheated steam under different kinds of drying conditions. The regularity of quality, dehydration rate and drying velocity changes has been mainly analyzed. The results indicate that the temperature of superheated steam is the primary influencing factor of the drying velocity under the same vacuum pressure, and the higher temperature is, the faster drying velocity can reach. The drying velocity is the fastest at the initial stage along the drying process.