Alcohol precipitation device with combination of high pressure atomization and countercurrent and method
A high-pressure atomization, countercurrent technology, applied in chemical instruments and methods, feeding/discharging devices of sedimentation tanks, separation methods, etc., can solve the problems of discontinuity in the whole process, low product recovery rate, unstable quality, etc. Achieve the effect of sufficient alcohol precipitation, high product recovery rate, uniform and stable quality
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Embodiment 1
[0021] The present embodiment is illustrated by taking the salvia miltiorrhiza extract as an example, including the following steps:
[0022] Step 1, adding ethanol in advance: add 3 / 4 tank volume of ethanol in alcohol precipitation tank 3;
[0023] Step 2. Stirring: Add 600L of salvia miltiorrhiza water extract with a specific gravity of 1.18 into the mixing tank 1, turn on the stirring device 7 on the mixing tank 1, stir for 30 minutes, and the stirring rate is 80r / min; open the valve 11 and feed the liquid The pump 8 sends the feed liquid into the transfer tank 2;
[0024] Step 3. High-pressure atomization combined with countercurrent alcohol precipitation: Turn on the plunger pump 9, adjust the plunger pump pressure to 2.5Mpa, and the flow rate to 300L / h, and spray the salvia miltiorrhiza extract into a mist through the high-pressure pipeline and the first nozzle 18 in sequence Drop into the alcohol precipitation tank 3, the first nozzle 18 is embedded in the ethanol liqu...
Embodiment 2
[0028] It is basically the same as Example 1, except that the specific gravity of salvia miltiorrhiza extract in step 2 is 1.20, and the stirring time is 25min; Add 85% ethanol countercurrently at the flow rate.
[0029] After the clear liquid was concentrated under reduced pressure, 415L of alcohol-immersed paste was obtained, 152kg of precipitate was obtained, and the recovery rate of total phenolic acids of Salvia miltiorrhiza was 91%.
Embodiment 3
[0031] It is basically the same as Example 1, except that the specific gravity of the salvia miltiorrhiza extract in step 2 is 1.15, and it is stirred for 20 minutes; 85% ethanol.
[0032] After the clear liquid was concentrated under reduced pressure, 430L of alcohol-immersed cream was obtained, 142kg of precipitate was obtained, and the recovery rate of total phenolic acids of Salvia miltiorrhiza was 92.5%.
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