罗非鱼片的超临界CO2干燥动力学及模型

Dynamics and model for supercritical carbon dioxide drying of tilapia fillet

摘要: 超临界CO2干燥是一种新型的干燥技术。为掌握罗非鱼片的超临界CO2干燥特性，该文研究了温度、压力和CO2流量对罗非鱼片的超临界CO2干燥动力学的影响规律，拟合了干燥曲线方程。结果表明：温度（35～55℃）对超临界CO2干燥过程有显著影响，而压力（15～35 MPa）和CO2流量（15～35 L/h）对干燥过程的影响相对较小；干燥方程符合Page 模型。研究结果可为罗非鱼片的超临界CO2干制工业化生产和控制提供参考。

Abstract: The supercritical CO2 drying is a new drying technique. In order to master the supercritical CO2 drying characteristics of tilapia fillet, the influences of the temperature, pressure and CO2 flow on supercritical CO2 drying process of tilapia fillet under certain condition were studied and the equations of drying curve were fitted. The results showed that drying temperature (35-55℃) had a significant effect on supercritical CO2 drying, while pressure (15-35?MPa) and flow of CO2 (15-35?L/h) had a less effect on supercritical CO2 drying. The drying process could accurately be described by the Page model. The results can provide some helpful information for industrialization production and control of supercritical CO2 drying for tilapia fillet.