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Distillation & Fractional Distillation Plant
Fatty acids from splitting towers contain several impurities, such as, Odour bodies, Unsaponifiable matter, Aldehydes, Water, High boiling components- un-splitted glycerides, Phosphatides, etc. These impurities are removed by adequate distillation in order to obtain a pure product with light colour and good stability.
There are 2 type of Distillation:
- Straight Ditillation
- Fractional Disillation
Straight Distilltion
Make use of the differences in boiling points between the desired fatty acids and the impurities, to effect a separation of these components
Fatty acids are vaporized and then condensed, leaving the high-boiling impurities.
Flow Chart
TF Out
TF In
Light End
Light End
Distilled Fatty Acid
Residue
Fractional Distillation
Fractional distillation is a type of distillation that separates miscible liquids. This Plant process involves repeated distillation and condensation, and the mixture is usually separated into components. Separation occurs when the mixture is heated to a certain temperature at which some of the mixture begins to vaporize.
Flow Chart
TF Out
TF In
C8 - C12 Fatty Acid
C14 - C16 Fatty Acid
C16 - C18 Fatty Acid
Benefits of Distillation Section:
- Vacuum balanced packed column/Bubble cap design ensures zero vapor logging i.e. effective distillation.
- Online fatty spraying also helps for zero vapor logging which ensures maximum vapor to carry to the scrubber without distilling in trays.
- Special de-aeration increases the heat exchanging efficiency, because of zero dissolved air.
- Efficient re-generative heat exchanging ensures maximum heat recovery.
- Counter current flow (CFA/steam/fatty acid vapours) design increase the efficiency for better distillation.
- Vacuum sealing arrangement for power failure.
- Auto cut off for steam and barometric water supply in case of power failure.
- Simple & low maintenance automations.
Applications:
Fatty Acid Distillation is used for formulation of gel, soap & other cleaning products.
