Safe, efficient and energy-saving technological process for extracting artemisinin or artemisia annua extract
A high-efficiency, energy-saving, technological process technology, applied in the direction of organic chemistry, can solve the problem of low safety factor, achieve the effect of reducing steam and power consumption, saving solvent, and ensuring safety
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[0028] A safe, high-efficiency and energy-saving technological process for extracting artemisinin paste or artemisinin, comprising the following steps:
[0029] A. Add Artemisia annua leaves from the feed valve 13 of the percolation tank to the percolation tank 1, then add dichloromethane to completely submerge the leaves of Artemisia annua in the percolation tank, and then open the heating valve 8 of the percolation tank to heat the temperature. When the temperature reaches 35-40°C, turn on the ultrasound source 5 for ultrasound;
[0030] B. After half an hour of ultrasonication, open the discharge valve 14 of the percolation tank and the feed valve 16 of the concentration tank, so that the percolation liquid in the percolation tank 1 enters the concentration tank 3. When the percolation liquid in the concentration tank 3 reaches When 80% of its volume, open the enrichment tank heating valve 10 and start to concentrate;
[0031] C, open the cooling circulating water while op...
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