oil seed solvent extraction plant equipment/cotton seeds oil extraction machine
Process flow:
Extracted Light Petrol Solvent Recovery
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Puffing/Extruded Material→Oil Extraction→Mixed Oil Processing→Extracted Crude Oil
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Solvent Recovery←Wet Meal De-solventizing→Product Meal
1.1 Extraction Process Procedure
The puffed/extruded rice bran will be sent to the extractor by the scraper conveyor, the puffed/extruded rice bran will run a circle from the material inlet port to the discharging outlet, and the puffed/extracted will be sprayed by the feed by decreasing concentraction mixed oil at the the material inlet and discharging port, The sprayed puffing/extruding rice bran will be sprayed again by the fresh solvent before it was drained, the drained off wet meal will be discharged by the discharging cell kick-out device of the extractor and sent to the wet meal scraper. The strong mixed oil will go to the two-stage cyclone separator to remove the the powder impurity and then go into the mixed oil tank by the strong mixed oil pump.
1.2 De-solventizing Process Procedure
The solvent wet meal will be sent to the DTC de-solventizer pre-desloventing layer by the air lock, the bottom part will be heated by the indirect steam to removing part of the solvent; the pre-deslovented wet meal will go into the de-solventizing layer, the de-solventizing layer set self-control thus to keep a certain material layer, the bottom of the material will be passed through the direct steam to remove all the solvent. At the same time, part of the steam will condensate in the meal, the moisture of the meal will increase partially. The de-solventing meal will fall into the drying layer by the rotary valve de-watering after the wet meal into the evaporation layer, evaporation layer set automatic control to maintain a certain material layer, the bottom into the direct steam remove all at the same time, solvent, part of the steam condensation in the meal, meal moisture will increase. Agglomeration by rotary valve quantitative fall into the drying layer, the drying layer hold a certain material level, thus to continue the water removing process, and then the material will be cooled at the cooling layer. Finally the material discharging will be controlled by the automatic self-control door, and the discharging material will be sent to the meal library by meal scraper.
1.3 Evaporation Section:
The mixed oil will go into the first long tube evaporation tube from the mixed oil tank. The evaporation solvent will go into the evaporative condenser by the separation chamber. The separation chamber outlet pipeline has the liquid level control device thus can keep the liquid seal. Meanwhile, the secondary steam evaporating heating has equipped with the control valve unit so that can control the mixed oil temperature.
The mixed oil will go into the first long tube evaporation tube from the mixed oil tank. The evaporation solvent will go into the evaporative condenser by the separation chamber. The separation chamber outlet pipeline has the liquid level control device thus can keep the liquid seal. Meanwhile, the secondary steam evaporating heating has equipped with the control valve unit so that can control the mixed oil temperature.
1.4 Solvent Condensation&Water Distribution Section
The condensate will be collected and pumped into the water distribution tank by the condensate recovery pump. The non condensate gas from the final condenser will be sucked into the paraffin recovery device by the tail gas blower .
The solvent phase will flow into the solvent library for partially recycle. The water phase will pump into the steam cook. The residual solvent will be evaporated by the direct steam from the bottom of the steam tank and then pumped into the water seal pool.
1.5Tail Gas Absorption Section
The un-condensate gas from the condenser, DT condenser, cooking pot, water distribution tank, underground solvent tank all will go into the air balance tank, and then go into the final condenser to recover the solvent. Finally the un-condensate gas solvent will go into the water bath energy saving tail gas recovery device to recover the residual solvent, the free gas will go into the extraction scraper from pipelines, and the incoming raw material will absorb residual solvents.
1.6Extraction Process Technology Advantages:
1.6.1 The mixed oil adopts two-stage impurity removal treatment. The strong mixed oil will firstly go into the first cyclone separator to remove the bigger meal powder, and then go into the second cyclone separator to continue the secondary impurity removal. The mixed oil Basic does not contain solid impurities separated by the cyclone separator, the relative clean mixed oil which has been separated by the cyclone separator will be pumped into the mixed oil temporary storage tank for further sediment, the sediment in the bottom of the mixed oil tank will be pumped into the extractor by the slag pump.
1.6.2 The secondary steam of the condensate water tank will be used for the waste water pre-heating thus to reduce steam consumption;
1.6.3 Collecting all steam of the extraction plant and pumping into the boiler room for secondary use, the spent water exhaust heat can be used effectively thus to save plant production water .
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