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我院自一九七七年起,采用喷雾干燥法制备中药复方制剂。该法的主要工艺设备有立式内挂搪瓷夹套加热浸出罐、不锈钢真空浓缩罐、喷雾干燥塔等。操作时,将调配好的中药饮片置夹层浸出罐内,加入10～13倍水,蒸汽加热浸出2～3次,浸出同时用直接加热管代替搅拌和加热,每次浸出1小时左右。浸出液通过真空抽滤管抽入不锈钢真空浓缩罐内,浓缩至适当浓度,取浓缩液,弃去药渣。浸出液一般在真空600mm Hg、温度
In our hospital since 1977, spray drying was used to prepare Chinese herbal compound preparations. The main process equipment of this law includes vertical hanging enamel jacket heating leaching tank, stainless steel vacuum concentrating tank, spray drying tower and so on. During the operation, the Chinese medicine decoction pieces will be prepared and immersed in the cans, and 10 to 13 times of water is added, and the steam is heated and leached for 2 to 3 times. The leaching uses direct heating tubes instead of stirring and heating, and each leaching is performed for about 1 hour. The leachate was pumped into a stainless steel vacuum concentration tank through a vacuum suction filter and concentrated to a suitable concentration. The concentrate was taken and the dregs were discarded. Leachate is generally in vacuum 600mm Hg, temperature