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| Rice bran oil refining workshop |
Type:Rice bran oil refining machine ,rice bran oil refinery
plant for sale
Capacity: 10-600T/D
Material: soybean oil, rapeseed oil, peanut oil,
cottonseed oil, sunflower oil, palm oil
Major equipment: degumming tank, centrifuge, heat
conducting oil boiler, decolorization tower, deodorization tower
Application: intermittent, continuous edible oil
refining process for multiple oil seed refining
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| Rice bran oil refining process |
Degumming
section of rice bran oil refining machine :
This is the first step in refining and is also known as the Pretreatment
Process. In the degumming process of 30-500tpd cooking oil refinery equipment,
the gums are precipitated and separated by the centrifugal separation
technique. If the gum content in the oil is low, only gum-conditioning is
required to be done and there is no need to go for separate degumming process.
The degumming can be carried out in the same neutralization vessel.
Crude cooking oil contains much free fatty acid, which is
harmful for health. Free fatty acid can have reaction with caustic soda. During
the reaction, it can be saponified and becomes soap stock, then small
soap stock pellets will sink and become sediment and be pumped out. After
neutralizing, most of the free fatty acid will be removed out.
Decoloring
section of rice bran oil refining machine :
The main function of decoloring process is to remove oil
pigment, residual soap grain and metal ions. Under negative pressure, the
mechanical mixing method combined with steam mixing will improve the decoloring
effect. The degummed oil firstly enters into the heater to be heated to the
appropriate temperature (110°C), and then goes to the bleaching earth
mixing tank. The bleaching earth is delivered from the low bleaching box to the
temporary tank by wind. The bleaching earth is added by automatic
metering and is interlockingly controlled with the oil.
The oil mixed with the bleaching earth overflows into the
continuous decolorizer, which is stirred by non-powered steam. The decolored
oil enters into the two alternate leaf filters to be filtered. Then the
filtered oil enters the decolored oil storage tank through the security filter.
The decolored oil storage tank is designed as the vacuum tank with the nozzle
inside, so as to prevent the decolored oil contacting with the air and
influencing its peroxide value and color reversion.
Deodorizing
section of rice bran oil refining machine :
The qualified decolored oil enters into the spiral plate heat
exchanger to recover most of the heat, and next goes to high pressure steam
heat exchanger to be heated to the process temperature (240-260°C) and then
enters the deodorization tower. The upper layer of combined deodorization tower
is the packing structure which is mainly used to remove the odor producing
components such as free fatty acid (FFA); the bottom layer is the plate tower
which is mainly for achieving the hot decoloring effect and reducing the peroxide
value of the oil to zero. Oil from the deodorization tower enters into the heat
exchanger to recover most of the heat and makes further heat exchange with
crude oil, and then is cooled to 80-85°C through the cooler. Add the required
antioxidant and flavor agent, and then cool the oil below 50°C and store it.
Such volatiles as FFA from the deodorizing system are separated by the packing
catcher, and the separated liquid is FFA at low temperature (60-75°C). When the
liquid level in the temporary tank is too high, the oil will be sent to the FFA
storage tank.
Contact information:
Skype: sophia.zang1
Phone: +86-371-5677 1823
Mobile: +86-135 2662 7860
