2. 300TPD Extraction Plant Introduction
A. Technical Process Introduction
B.
Solvent extraction process:
1> Features of Rotocel Extraction:
1.Adopt stainless steel fixed grid plate and increase the horizontal grid plates, which can prevent the strong miscella from flowing back to the blanking case, so as to ensure good extraction effect;
2.The rotocel extractor is driven by rack, with unique rotor of balanced design, low rotating speed, low power, smooth operation, no noise and quite low maintenance cost;
3.The feeding system can adjust the rotating speed of airlock and main engine according to the feeding quantity and maintain a certain material level, which is beneficial to the micro negative pressure inside the extractor and reduce the solvent leakage.
4.The advanced miscella circulation process is designed to reduce the fresh solvent inputs, reduce the residual oil in meal, improve the miscella concentration and save energy by reducing the evaporation capacity.
5.The high material layer of the extractor helps form immersion extraction, reduce the meal quality in miscella, improve the quality of crude oil and reduce the evaporation system scaling.
6.Especially suitable for the extraction of various pre-pressed meals.
2> Wet Meal Desolventizing Process
Passivate and damage the anti-nutritional components such as the urea enzyme and trypsin in the meal, and improve meal value in use.
Control the protein denaturation degree in the meal, and improve the NSI index effectively.
It can better regulate the color, flavor and taste of the meal.
It can better reduce residual solvent in the meal and regulate the meal moisture, so as to guarantee the minimum solvent consumption and safe use of the meal.
3> Negative pressure evaporation process
The liquid from the extractor is the miscella containing grease and oil, which can be separated out according their different vaporization temperatures. Our company mainly uses vacuum evaporation technology, and it can reduce solvent leakage and consumption. The separated solvent vapour is cooled and recycled back to the extractor for reuse, which can improve the solvent efficiency.
Negative Pressure Evaporation Advantages:
Vacuum evaporation features high efficiency, thorough de-solvation and low solvent consumption in crude oil.
Use the second steam of desolventizer toaster and remaining steam from steam jet pump as the heat source of the first steam, which can save energy, reduce the condenser configuration area and save investment.
Due to the low temperature of the steam, the crude oil features light color, good quality and low residual solvent.
4> Solvent condensation & recovery process:
Solvent condensation system combines with evaporation system closely, and evaporative condenser and steam stripping condenser all work under negative pressure. Non-condensable gas enters the energy saver from the shell of the first evaporator. In energy saver, non-condensable gas exchanges heat with condensate from the evaporative condenser. Finally, the condensate temperature discharged from energy saver is increased, and the solvent separated from water goes to solvent holding tank. The high temperature makes it unnecessary to be reheated for the recycling, so as to save energy.
Non-condensable gas from energy saver enters desolventizing condenser, in which a great deal of gas is condensed, and the tail gas is dischargd into the final condenser. The solvent gas from the extractor enters extraction condenser, and the non-condensable tail gas enters the final condenser. For the free gas in final condenser, diversion box, holding tank, underground solvent library and miscella tank, cool them with low-temperature cold water to recycle most of solvent gas. The tail gas with little solvent goes to paraffin recovery process.
5> Paraffin oil recovery process:
Tail gas first enters paraffin absorption tower, and then comes the counter-current absorption of paraffin and tail gas, which can reach the ideal state when the stainless steel packing has large surface area. The solvent content in discharged liquid paraffin (called rich oil) is not more than 5%, so as to ensure the maximum absorption rate The paraffin rich oil is pumped into the heat exchanger to exchange heat with paraffin lean oil, and then goes to paraffin heater, and finally enters paraffin analysis tower. In the analysis tower, the steam-liquid heat exchange is conducted on the surface of stainless steel packing surface with direct steam and rich-oil paraffin, which can remove the solvent in the paraffin. This kind of paraffin which is also called lean oil, exchanges heat with rich oil, then is cooled to the ideal absorption temperature through the cooler. After that it enters absorption tower for recycling. The gas mixture from the analysis tower enters energy saver, and the tail gas from the absorption tower is discharged from workshop with the fan. In solvent recovery system, the solvent enters the holding tank through water tank, and the condensed iste water is discharged from water tank. If the tail gas contains certain solvent, cook it with the cooker to make it meet the emission requirements.
3. 300TPD Soybean Oil Refining Production Line Introduction
Based on the traditional oil refining technology, has developed the latest combined packing layer plate deodorization soft tower and the physical and chemical mixed refining technology for crude oil of any quality. Moreover, a series of advanced technology and equipment are used, such as super wet degumming, bleaching earth automatic metering, negative pressure decoloring, high vacuum steam jet deodorization, deacidification, winterization dewaxing etc. With advanced technology, superior equipment, full-automatic control and excellent economic and technical parameters, our equipment can meet customers' different refining requirements at home and abroad.
Soybean oil refining production line process:
1. Hydration Degumming & Alkali Refining Deacidification Process
2. Continuous Refining Decoloring Process
3. Continuous Refining Deodorizing Process
4. Automatic Control System
