工业化微波提取工艺及设备的关键技术研究

Study of the key technologies for industrial microwave extraction process and equipment

调研国内外文献与专利表明：工业化微波提取技术尚处于摸索阶段；大型微波设备的设计与改进必须以提取工艺为基础．中试规模的实验表明：选择适当的微波有效照射时间、微波功率及固液比有利于节能降耗、提高效率；以黑胡椒一乙醇为体系，由实验数据获取相应的提取率指标及能耗指标．实验表明：当提取率均为大于或等于95％时，动态微波法比溶剂回流法节能20％-67％，故微波法为高效节能的新技术．文章还提出了大型微波提取设备的评价方法．

Industrial microwave extraction technology is still in the exploratory stage, and design and improve- ment of large-scale equipment must depend on microwave extraction technology; pilot-scale experiments showed that： selecting the appropriate microwave effective exposure time, the microwave power and the solid-liquid ratio is conducive to energy conservation and efficiency; The extraction index （A） and energy consumption index （B） were obtained from the corresponding experimental data, and the experimental results show： when the ex- traction rates were greater than or equal to 95% , the energy consumption of dynamic microwave extraction is less than one of the solvent extraction 20% - 67%. Thus, relative to the solvent reflux extraction, microwave extraction is a new energy efficient technology; A new evaluation for large-scale microwave extraction equipment was shown by two indexes A and B at the same time.