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循环式沸腾干燥装置利用热风循环使其整机热效率由～40％提高至76％，并由负压操作改为正压操作，改善了物料的沸腾状态，增强了设备的适应性。其工作原理和结构型式已获国家实用新型专利。
The circulation type boiling drying device utilizes hot air circulation to increase the thermal efficiency of the whole machine from ~ 40% to 76%, and changes from negative pressure operation to positive pressure operation, which improves the boiling state of the material and enhances the adaptability of the equipment. Its working principle and structure have been national utility model patents.