Patent attributes
A process of continuous, on-line active filtration of cooking oil during food processing in a vat to remove free-fatty-acids and other undesirable impurities includes moving oil from the vat to a treatment tank; adding an amount of adsorbent to the oil in the treatment tank; mixing the oil and the adsorbent in the treatment tank for a time to allow substantially all of the free-fatty-acid adsorption of the process to occur in the tank; drawing treated oil from the treatment tank and moving it to a flatbed pressure filter; filtering the treated oil through the filter to remove the impurity-laden adsorbent therefrom; returning the filtered oil to the vat; and conducting the foregoing steps at a rate such that a volume of oil substantially equal to the volume of the vat is filtered each hour.
