Method for extracting artemisinin and purifying artemisinin by subcritical fluid technology
A subcritical fluid and purification method technology, applied in the field of artemisinin extraction and artemisinin purification by subcritical fluid technology, can solve the problems of large demand, high energy consumption, long time, etc., and achieves a high degree of industrialization and energy consumption. The effect of low and low production cost
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Embodiment 1
[0023] A subcritical fluid technique for extracting artemisinin and a method for purifying artemisinin, comprising the following steps:
[0024] Step 1, pretreatment: crush the dried leaves of Artemisia annua to 80 mesh to obtain Artemisia annua powder, put 5Kg of Artemisia annua powder into 5 silk bags and put them into the extraction tank, preheat the experimental equipment to 60°C, start the vacuum pump to The pressure in the extraction tank and separation tank is pumped to 0-0.10MPa;
[0025] Step 2, extraction: open the solvent injection valve of the extraction tank, inject butane solvent until the solvent is submerged 5cm above all the silk bags, turn on the pump of the hot water circulation system, and maintain the extraction temperature at 45°C and the extraction pressure at 0.4MPa for extraction. Time is 60 minutes, obtains oil-soluble mixture;
[0026] Step 3, presolvent separation: open the extraction tank sampling valve and the separation tank sampling valve, pres...
Embodiment 2
[0032] A subcritical fluid technique for extracting artemisinin and a method for purifying artemisinin, comprising the following steps:
[0033] Step 1, pretreatment: crush the dried leaves of Artemisia annua to 20 meshes to obtain Artemisia annua powder, put 5Kg Artemisia annua powder into 5 silk bags and put them into the extraction tank, preheat the experimental equipment to 60°C, start the vacuum pump to The pressure in the extraction tank and separation tank is pumped to 0-0.10MPa;
[0034] Step 2, extraction: open the solvent injection valve of the extraction tank, inject butane solvent until the solvent is submerged 5cm above all the silk bags, turn on the pump of the hot water circulation system, and maintain the extraction temperature at 45°C and the extraction pressure at 0.4MPa for extraction. Time is 60 minutes, obtains oil-soluble mixture;
[0035] Step 3, presolvent separation: open the extraction tank sampling valve and the separation tank sampling valve, press...
Embodiment 3
[0041] A subcritical fluid technique for extracting artemisinin and a method for purifying artemisinin, comprising the following steps:
[0042] Step 1, pretreatment: crush the dried leaves of Artemisia annua to 80 mesh to obtain Artemisia annua powder, put 5Kg of Artemisia annua powder into 5 silk bags and put them into the extraction tank, preheat the experimental equipment to 60°C, start the vacuum pump to The pressure in the extraction tank and separation tank is pumped to 0-0.10MPa;
[0043] Step 2, extraction: open the solvent injection valve of the extraction tank, inject butane solvent until the solvent is submerged 5cm above all the silk bags, turn on the pump of the hot water circulation system, and maintain the extraction temperature at 65°C and the extraction pressure at 0.4MPa for extraction. Time is 60 minutes, obtains oil-soluble mixture;
[0044] Step 3, presolvent separation: open the extraction tank sampling valve and the separation tank sampling valve, pres...
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