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Deodorization

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Deodorizing is the Distillation process in which fatty acid is distilled from oil Refinery. Under high temperature condition and in presence of high vacuum, with the help of sparging & agitation steam. Further this fatty acid in vapours form is condensed & recovered in liquid form by the vapours scrubbing system.

De-waxed oil from intermediate storage tank is pumped to primary heating plate heat exchanger. Which is used only in start-up conditions. To heat the incoming cold de-waxed oil. Further it will travel from oil to oil heat exchanger. Where De-waxed oil is getting heated by the outgoing hot refined oil. Then this oil will pass through the PRE-HEAER via. Peripheral coils of the regenerative heat exchanger (bottom compartment of deodorizer).

In Regenerative heat exchanger de-waxed oil flows through the coils & refined oil flows through the open space of the exchanger. In counter current manner, continuous steam agitation assures continuous and maximum heat exchange.

After recovering maximum heat from the refined oil. Oil is further heated up to the required temperature, suitable for the deodorizing in final Deareater heater. This is equipped with agitation and sparging steam,
continuous flow of superheated steam through this assures effective aeration along with primary vaporization of fatty acid and helps to de-coloured the refined oil.

Further this overflows to the multi-compartment Latest Designed Structure Packing Column. This reactor is equipped with free flow (gravitational) of incoming oil, from Deareater heater and well equipped with High quality and special designed Impod Structures, sparging steam, continuous flow of superheated steam through this assures effective secondary vaporization of fatty acid and helps to de-coloured the refined oil upto extent level with Low temperatures.

Deodorization Process

In Deodorization, the Oil overflows to the multi-compartment Deodorizer. Deodorizer is multi-compartment vertical vessel, where each and every trays are specially designed which Ensures uniform distillation of odoriferous substances. Oil overflows from tray to tray. Specially designed trays provide sufficient mass transfer surface for effective removal of volatile matters.
Flow control system at the outlet of the deodorizer, ensures the maintenance of required level at the bottom tray. The steam used for stripping off volatile matters in the oil is distributed evenly and intensively. The steam meets the deodorized oil Refinery. Stripped off the volatile matter and rises through the vacuum. Stripping the volatile matter from the oil. The deodorized oil leaving regenerative heat exchanger and finally cooled by water in heat exchanger
Finally this oil is passed through the alternatively operating set of polishing filters.
The volatile matters consisting of free fatty acid and other odoriferous substances stripped from the deodorizer are led to the vapor scrubber located at outside the deodorizing column. In the scrubber volatile material rises through the bed of structures and meets liquid fatty acid sprayed. Vapours are condensed, cooled, and then recalculated. Excess distillate collected is led to the storage tank, whenever high level reached in storage space at scrubber. Fatty scrubber is specially designed for minimum carryover of fatty materials, to the vacuum system.

Advantages of Deodorization Process:

  • Vacuum balance tray design ensures zero vapors 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 tray increases the heat exchanging efficiency, because of Zero dissolved air.
  • Efficient re-generative heat exchanging trays ensures maximum heat recovery & extra deodorizing time.
  • Counter current flow design increases the tray efficiency for better Deodorization & distillation.
  • Vacuum sealing arrangement for power failure. Simple & low maintenance automations.
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