Oil solvent extraction technology is very safe and scientific. For
high oil yield oilseeds, we use pre-press and solvent extraction
technology, like sunflower seed; For low oil yield oilseeds, we use
direct solvent extraction technology, like rice bran. There are
three kinds of extractors: rotocel extractor, loop extractor and
2. Oil Solvent Extraction Process:
Oil solvent extraction mainly includes extractor, desolventizer,
evaporator, stripping tower, condenser,exhaust gas recovery
Oilseed flakes or cake are conveyed into extractor, for solvent
spraying, steeping and extracting. Then miscella will be pumped to
evaporation system and stripping tower to get crude oil from
miscella and wet meal will be desolventized at DTDC.
Miscella will be pumped to evaporation system after removing
impurities twice. The evaporation system consists of first
evaporator, second evaporator and stripping tower. The solvent
evaporated from miscella will be recycled.
Wet meal from extractor contains a certain amount of solvent will
be conveyed to D.T.D.C for desolventizing, toasting, drying and
The solvent vapor evaporated from each section is recycled to
solvent tank through the condenser. The uncondensed solvent vapor
enters into the tail gas condenser and most of uncondensed solvent
vapor will be condensed. A small amount of solvent vapor enters
into the paraffin oil recycling system in which solvent vapor is
recollected by paraffin oil. Other incondensable gas is exhausted
through the exhaust fan.
3. Advantages of solvent extraction:
Negative extraction, high oil yield, low residual oil rate in meal,
good quality meal
Big volume extractor design, high process capacity, high benefit
and low cost.
The solvent extracting system can be designed according to
different oilseeds and capacity, which is easy and reliable.
Special solvent vapor recycling system, keep clean production
environment and high efficiency.
Sufficient energy saving design, energy reusing and low energy
Processing capacity: 20-5000T/D
Solvent extraction technology is applied in all kinds of oilseeds,
such as soybean, peanut, sunflower, cottonseed, rapeseed, canola,
linseed, castor, copra, rice bran, corn germm, mustard seed and so