Process for finely purifying high-purity solanesol form coarse cream of solanesol
A solanesol and high-purity technology, which is applied in the field of refining high-purity solanesol by using crude solanesol paste, can solve the problems of low comprehensive utilization, unfavorable solvent reuse, difficulty in industrialized production, etc., and achieves convenient recovery and The effect of reuse, improving the degree of comprehensive utilization, and easy industrial production
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Embodiment 1
[0028] Take 100 grams of solanesol crude paste (10.15%) obtained by extracting 6# solvent oil, put it in a 2000ML round-bottomed flask, heat and vacuum concentrate to remove 6# solvent oil, add 500 milliliters of ethanol, and then add 1 gram of hydroxide Potassium, stirred and reacted at 50°C for 2 hours, cooled the reacted liquid to 20°C, controlled the temperature to freeze at -5°C for 2 hours, filtered with suction, and the filtrate 1 was used to prepare tobacco absolute. After recovering ethanol from the filter cake, 42.07 g of solanesol crude paste was obtained. Add 6 times the volume of acetone to dissolve, cool to 20°C, filter to remove impurities, recover the filtrate, and cool to 3-5°C, filter to remove impurities, and collect the filtrate at - Stir in an ice-water bath at 2°C to -5°C for 2 hours, and filter to obtain 9.58 g of light yellow solanesol powder crystals with a content of 91.2% and a yield of more than 86%. The remaining mother liquor after crystallization...
Embodiment 2
[0030] Take 100 grams of solanesol crude paste (8.25%) obtained by extracting 6# solvent oil, put it in a 2000ML round bottom flask, heat and vacuum concentrate to remove 6# solvent oil, add 1000 milliliters of ethanol, and then add 5 grams of hydroxide Potassium, stir and react at 70°C for 3 hours, cool the reacted liquid to 15°C, control the temperature and freeze at -13°C for 5 hours, filter with suction, and filtrate 1 is used to prepare tobacco absolute; filter cake to recover ethanol After that, 41.2 grams of solanesol crude paste was obtained. Add 10 times the volume of acetone to dissolve, cool to 15°C, filter to remove impurities, recover the filtrate, and cool to 3-5°C, filter to remove impurities, collect the filtrate at -2°C to - After stirring in an ice-water bath at 5°C for 5 hours, light yellow crystals were precipitated, and 7.95 g of light yellow solanesol powdery crystals were obtained by filtration, with a content of 90.3%. The yield is greater than 87%. Th...
Embodiment 3
[0032] Get 150 grams of solanesol thick paste (9.01%) obtained by petroleum ether extraction, place in a 2000ML round-bottomed flask, heat and vacuum concentrate to remove petroleum ether, add 1200 milliliters of ethanol, then add 4.5 grams of potassium hydroxide, at 60 Stir and react at ℃ for 3 hours, cool the reacted liquid to 10℃, control the temperature and freeze at -20℃ for 16 hours, filter with suction, and filtrate 1 is used to prepare tobacco absolute; after recovering ethanol from the filter cake, 61.5 Add 8 times the volume of acetone to dissolve the crude cosolaneol paste, cool to 10°C, filter to remove impurities, recover the filtrate, and cool to 3-5°C, filter to remove impurities, collect the filtrate and store it on ice at -2°C to -5°C After stirring in a water bath for 8 hours, light yellow crystals were precipitated, and 12.98 g of light yellow solanesol powdery crystals were obtained by filtration, with a content of 90.6%. The yield is greater than 87%. The...
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