Cooking
Oil Refinery Plant for processing of edible oil. There are primarily
involved two types of processing- batch type and continuous. Through
these processes, the oil is separated from impurities and other
materials that can make it unfit for edible purpose. The refinery plants
process the oil in a series of procedures like neutralizing, bleaching
and deodorizing.
Batch Type Vegetable Oil Refinery Plant
Batch Type Vegetable Oil Refinery Plant, procedures are carried out in
series of neutralizing, bleaching & deodorizing for a measured
quantity of oils. Batch process is recommended for plants capacity as it
is low cost and easy to operate.
There are present different foreign impurities and unfiltered matter
from the seed such as gums, mucilage, coloured & in crude oil
extracted from expellers or solvent extraction plant. The free fatty
a-cids (FFA) present in oil deteriorate the quality, thus, making its
unfit for edible purpose.
The batch refining process consists of following section :
Neutralizing / Degumming
Bleaching Section
Deodorizing Section.
First
stage is neutralizing process in caustic soda treatment is performed to
remove free fatty a cids (FFA). For removing color from the oil, further
processing is down in bleaching section under vacuum conditions using
bleaching earth and activated carbon. High vacuum and temperature is
also maintained for deodorizing and removing odor from oil. The quality
of edible oil extracted from the batch refinery is good, in accordance
with the international standard. Dewaxing is an added process carried
out after bleaching, especially in case of sunflower and rice bran oil.
Neutralisation
Neutralizer to remove the Free Fatty A cids (FFA) by adding caustic soda.
Oil is heated up to about 60°C by heating coils and oil is stirred by
stirrer. Then soap stock formed due to chemical reaction between free
fatty a cid and caustic soda which are allowed to settle at the bottom of
the neutralizer from where it is taken out into soap stock tank.This
oil is washed with hot water to reduce extra caustic and soap ppm in the
neutral oil.Some oil like Soya bean oil requires to Degumming, the
process in batch system calculate amount of phosphoric a cid add before
adding caustic in neutralizer.
Bleaching
Neutralise oil is heated in bleacher at 100'C to 110'C under
vaccume.After reaching the temperature by adding Bleaching earth the
color remove by the process called adsorption process. Where all
coloring pigments are adsop on the surface of the bleaching earth, this
is catalytic reaction. Color pigments and bleaching earth remove by
filtering system.
De odorize
The bleached oil is heated in the de odorize to remove odoriferous
materials like phenols tocopherols aldehydes, ketones which are basic
responsible for color of oil. This all odoriferous material evaporates
by high temperature at 180'C to 240'C under high vacuum systems.Thermic
Fluid Boiler, Vacuum Pump, Barometric Condenser, Catchol, Steam
Generator etc. play their role in the refining process. So these
equipments are part of the refinery and connected with the vessels
through pipelines.
Cooler
De odorized oil is requires cooling at atmospheric temperaturtre to
avoid oxidation.De odorized oil cool in the cooler with cooling media
upto 45'c.Before sending this oil for final packaging oil is pass
through the bag filter
Dewaxing
Like sunflower oil which contain some wax is requires to remove before
packing. This process oil is pass through chill media reduce the
temperature at the 5'C to 10'C then pass through the filter to remove
wax.
The equipment involved are Neutralizer, Bleacher, Deodorizer, Heat
Exchanger, High & low vacuum equipment & Filters. we with batch
process have been operating at number of places, processing variety of
vegetable oils.
Vegetable Oil Refinery Plant,Oil Refinery Plant,Coconut oil refinery
machine, Copra oil refinery machine, Mustard oil refinery machine,
Sunflower oil refinery machine, Rapeseed oil refinery machine, Castor
oil refinery machine.
