Page 5 - TECHNICAL SPECIFICATION FOR PALM OIL REFINING_rev.1 - Copy_Float

OFFER NO. KMIPL/P16E0097R7
100 TPD PHYSICAL REFINERY AND FRACTIONATION
Page No. 5/69

dislodged and discharged via a hopper. The filter is then closed and readied for
the next batch. Before going on line again it can be pre-coated with bleaching

earth in order to seal the filter leaves and minimize clogging. The adsorbents are

mixed with bleached oil in the mixer and applied to the leaves by circulation
with the bleached oil pump. The filtrate from the clean filter is recycled back to

the Bleacher until the filter is pre-coated with bleaching earth and the oil is

clear. After this the full flow is switched to the new filter.

De-acidification Deodorizing:

The bleached oil is pre-heated in the De-aerating Economizer by outgoing

deodorized oil followed by the De-aerating Heater (if necessary) before entering
the Deaerator. The vessel is under full vacuum, so that residual air is reduced

to an absolute minimum. The Deaerator Discharge Pump sends the oil through

a Heat Economizer located at the bottom compartment of the deodoriser where
the temperature is increased by hot deodorized oil. The oil is heated to full

processing temperature in the High temperature Heater by thermic fluid. The

high temperature oil is sent to flasher where portion of the free fatty acids in the
oil will be flashed off.

Stripping: The hot oil enters the Packed Column, which is filled with special

structured packing so that the oil is distributed into a thin film and is evenly

agitated by stripping steam flowing counter currently from the bottom of the
column. As a result, free fatty acids and other remaining volatile impurities in

the oil are evaporated and removed with the steam. The residence time in the

column is only a few minutes. The bulk of the free fatty acids along with
aldehydes, ketones etc. in the oil are quickly stripped off before any heat

induced permanent damage has been done.

Deodorizing: The stripped oil from the column flows into the Deodorizer where

it flows through the channels of a series of vertically stacked compartments
(trays) while agitated by stripping steam. The prolonged thermal action breaks

down carotene and other color bodies, resulting in a lighter oil color. Also, the