Distillation: processes – separatory – With disparate physical separation
Patent
1983-10-07
1986-09-23
Bascomb, Wilbur
Distillation: processes, separatory
With disparate physical separation
203 72, 203 79, 203 80, 203 89, 203 90, 203 91, 203100, 202236, 260428, 426476, 426478, 426488, 426492, 159 3, B01D 116, B01D 310, C09F 512
Patent
active
046134107
ABSTRACT:
A method and apparatus for distilling, especially vacuum refining and deodorizing edible oils and fats utilizing sheets of oil driven downwardly in a distiller with a vacuum source at its top. A nozzle includes pressure equalization chambers, cantilever adjustment screws, and a central drag sheet to produce longer lasting and more uniform thin oil sheets to be driven in the distiller. A continuous process deaerates, dehydrates, degums, bleaches, refines, removes tocopherol, deodorizes, and strips peroxides and hydroperoxides from raw oil in a series of isothermal stages utilizing driven sheet distillers. No stripping steam is used except in the stage which strips peroxides and hydroperoxides. The method produces valuable, pure products such as tocopherol and fractionated fatty acids. It is especially efficient in heat exchange and low in waste and pollution producing products. A steam sparging nozzle for distributing steam in the stripping of peroxides and hydroperoxides includes a plurality of small tubes with openings which restrict steam flow so as to produce a uniform distribution of optimum size steam bubbles in the steam stripping column of oil. A microwave excitation device radiates the oil immediately prior to forming the driven sheets to excite the more volatile components of the oil for distilling.
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