联系人 aisy
Zhengzhou, Henan
Neutralization: the crude oil is output by the oil feed pump from
the oil tank, and next enters the crude oil heat exchanger to
recover part of heat after metering and then is heated to the
required temperature by the heater. After that, the oil is mixed
with the metered phosphoric acid or citric acid from phosphate tank
in the gas mixture (M**1), and then enters the conditioning tank
(R**1) to make the non-hydratable phospholipids in oil change into
the hydratable phospholipids. Add the alkali for neutralization,
and the alkali quantity and alkali solution concentration depend on
the quality of the crude oil. Through the heater, the neutralized
oil is heated to the temperature (*0℃) suitable for centrifugal
separation to remove the phospholipids, FFA and other impurities in
the crude oil.
Washing: there is still about **0ppm soap in the neutralized oil
from the separator. To remove the remaining soap, add into the oil
about 5~8% hot water, with water temperature 3~5 ℃ higher than the
oil generally. To achieve more stable washing effect, add
phosphoric acid or citric acid when washing. The re-mixed oil and
water in the mixer is heated to ****5℃ by the heater, and then
enters the wash separator to separate the remaining soap and most
water. The water with soap and oil enters into oil separator to
separate out oil in the water. Further catch the oil outside, and
the waste water is discharged to the sewage treatment station.
Vacuum drying stage: there is still moisture in the oil from the
wash separator, and the moisture will affect the stability of the
oil. So the oil at *0℃ should be sent to vacuum drier to remove the
moisture, and then the dehydrated oil goes to the decoloring
process. Finally, pump out the dry oil by canned pump.
国家: | China |
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