| 摘要 |
In a process for adsorbent bleaching of edible oils, adsorbent agent usage is reduced by deaerating and moisture adjusting an oil/adsorbent mixture, then adjusting the temperature of the mixture to range from 200 DEG to 400 DEG F and then directly passing the temperature-adjusted mixture through a bleaching zone at a pressure of atmospheric pressure or greater in the substantial absence of oxygen and under turbulent flow, and finally filtering the adsorbent from the oil. Adsorbent usage is also reduced by utilizing the above deaerating, moisture adjusting, and temperature conditions with or without the use of turbulent flow and utilizing 2 to 7 bleaching stages with more or less equal amounts of fresh adsorbent being used in each stage. Preferably, this multistage process is utilized in combination with the turbulent flow process.
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