Method for fractionating and crystallizing palm oil
A palm oil and crystallization technology, which is applied in the direction of fat oil/fat separation and fat generation, can solve the problems of low palm oil crystallization efficiency and shorten the time of grease crystallization, so as to shorten the overall time, reduce processing steps, and crystallization efficiency Improved effect
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Embodiment 1
[0032] (1) Oil feed: Add palm oil with a melting point of 26°C accounting for 10% of the total mass of the mixed oil to the palm oil to be fractionated, mix the two fully and evenly, and transport them to a crystallization tank for temporary storage .
[0033](2) Heating: Heat the mixed oil to 50°C in a water bath for crystal breaking treatment, raise the temperature to 60°C and keep it for 60 minutes to fully melt. The overall heating time is 4 hours.
[0034] (3) Crystallization: Use a stirrer to cool the oil with a temperature difference of 3-5°C per minute at a stirring speed of 40Hz. After the temperature drops to 18°C, reduce the frequency to 30Hz and cool down to the oil with a temperature difference of 0.5-1°C per minute. The crystallization temperature point; the overall crystallization time is about 15h.
[0035] (4) Crystal growth: The crystal nuclei combine to form larger particles, which become larger and larger as time goes on; the crystal growth time is 5h.
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Embodiment 2
[0039] (1) Oil feed: Add palm oil with a melting point of 28°C, which accounts for 11% of the total mass of the mixed oil, to the palm oil to be fractionated, so that the two are fully mixed evenly, and transported to a crystallization tank for temporary storage .
[0040] (2) Heating: Heat the mixed oils to 60°C in a water bath for crystal breaking treatment, raise the temperature to the highest temperature of 70°C and keep it for 55 minutes to fully melt; the overall heating time is 3 hours.
[0041] (3) Crystallization: Use a cooling stirrer to cool the oil with a temperature difference of 3-5 °C per minute at a stirring speed of 50 Hz. After the temperature drops to 19 °C, reduce the frequency to 30 Hz and cool down to 0.5-1 °C per minute. The crystallization temperature point of oil; the overall crystallization time is about 18h.
[0042] (4) Crystal growth: crystal nuclei combine to form larger particles, which become larger and larger as time goes on, and the crystal g...
Embodiment 3
[0046] (1) Oil feed: Add palm oil with a melting point of 30°C, which accounts for 15% of the total mass of the mixed oil, to the palm oil to be fractionated, to fully mix the two, and transport them to a crystallization tank for temporary storage.
[0047] (2) Heating: Heat the mixed oil to 70°C in a water bath for crystal breaking treatment, raise the temperature to the highest temperature point of 75°C and keep it for 40 minutes to fully melt; the overall heating time is 2 hours.
[0048] (3) Crystallization: Use a stirrer to cool the oil with a temperature difference of 3-5°C per minute at a stirring speed of 60Hz. After the temperature drops to 20°C, reduce the frequency to 30Hz and cool down to the oil with a temperature difference of 0.5-1°C per minute. The crystallization temperature point; the overall crystallization time is about 20h.
[0049] (4) Crystal growth: The crystal nuclei combine to form larger particles, which become larger and larger as time goes on. The ...
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