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Technology of Oil Extraction Process
www.palmoilindustry.com/oil-extraction-process.html
Our company's oil extraction solution is designed to efficiently recover oil remaining in the pomace/fiber after palm fruit and palm kernel pressing. The solution design strictly adheres to the three principles of safety, environmental protection, and energy conservation, reducing residual oil content to below 0.8% and improving the overall oil yield and economic efficiency of palm oil mills. This solution is highly adaptable and can meet the technical renovation needs of both new and existing factories of various scales.
Process Flow
The entire extraction process is an efficient closed-loop system, primarily comprising five key stages: pretreatment, solvent extraction, wet meal desolventization, mixed oil processing, and solvent recovery.
Pre-treatment stage (expansion process): This solution adopts advanced expansion pre-treatment technology to replace traditional crushing and steaming processes. After expansion, the oilseeds form uniform, porous, and structurally dense expanded particles, enhancing solvent penetration and achieving efficient oil extraction.
Solvent extraction stage: The expanded oilseed particles are thoroughly counter-currently contacted with food-grade hexane solvent in the extraction equipment, forming concentrated mixed oil and wet meal.
Wet meal desolventization stage: The wet meal containing extraction solvent is dried, cooled, and treated to inactivate anti-nutritional factors in the desolventizer, ensuring the final meal meets safe feed ingredient standards.
Mixed Oil Processing: After filtering impurities from the mixed oil, a multi-effect evaporation system is used to concentrate the mixed oil to an oil content of 80-90%. Residual solvent is then removed from the mixed oil in a stripping tower, yielding crude palm oil that meets refining requirements.
Solvent Recovery: Solvent-containing vapors generated in the desolventizer, evaporation system, and stripping tower are cooled and recovered via a condenser, enabling solvent recycling and reducing solvent loss rates.
Oil Extraction Process
Key Technologies
High-Efficiency Counter-Current Extraction Technology: By optimizing solvent ratio, extraction time, temperature, and oilseed expansion degree, extraction efficiency is maximized.
Energy-saving evaporation technology: Multi-effect evaporation, heat pump technology, and waste heat utilization significantly reduce steam consumption.
Low-loss solvent recovery technology: Efficient condensation, precise water separation, and advanced exhaust gas recovery ensure solvent loss is far below industry standards.
Safety and explosion-proof technology: Full system explosion-proof design (motors, instruments, electrical components), nitrogen protection, online monitoring of solvent concentration (LEL), CO2 fire suppression system, and comprehensive interlocked alarm system.
Automated control technology: DCS/PLC centralized control system enables precise monitoring, automatic adjustment, data recording, and alarms for process parameters (temperature, pressure, flow rate, liquid level, solvent concentration), ensuring safe and stable operation while reducing reliance on manual intervention.
Oil Extraction Process
Equipment
Expander: Utilizes screw extrusion expansion technology to form porous sponge-like expanded particles under high temperature and pressure, increasing oil porosity by 300% and reducing powder content by 90%. This effectively shortens extraction time, reduces solvent loss, and lowers residual oil content to below 0.5%.
Extractor (Ring-shaped): Expanded particles come into counter-current contact with the solvent. The ring-shaped design ensures uniform penetration without breaking the particles, with wet meal residual oil content of 0.3-0.5%.
DTDC Desolventizer: Desolventization, baking, and cooling are integrated into three layers. Wet meal flows from top to bottom. The first layer introduces direct steam for efficient solvent removal, the middle layer uses indirect steam for baking, sterilization, and enzyme inactivation, and the bottom layer cools and conditions the meal, producing qualified meal.
Evaporator: Uses a two-stage evaporation process to concentrate mixed oil. The mixed oil forms a film on the inner wall of the long tubes and rapidly evaporates upward. The design prevents coking and is highly efficient and energy-saving.
Stripping Tower: Concentrated mixed oil comes into countercurrent contact with superheated steam through the packing layer inside the tower, completely removing residual solvents to ≤0.05%. Nitrogen sealing is used to prevent oxidation and control the increase in crude oil acid value.
Oil Extraction Process
We provide professional services and support throughout the entire project lifecycle.
Pre-sales consultation and design: Our engineers assess customer needs through analysis and develop a comprehensive process solution based on this assessment.
Project implementation: Services cover the entire “turnkey” project process, from detailed design, equipment manufacturing and procurement, installation and construction, system commissioning, to final delivery.
Installation, Commissioning, and Start-up: We dispatch experienced engineers to provide on-site installation guidance, conduct comprehensive system commissioning until standards are met, and provide systematic training for the client's operators combining theory with practical operations.
Spare Parts Supply and After-Sales Service, including guaranteed supply of original spare parts, 24/7 technical hotline support, regular equipment inspections and maintenance recommendations, remote diagnostic services, and rapid on-site response to emergency faults.
Process Optimization and Upgrade Services: Through analysis and diagnosis of operational data, we tailor optimization solutions for customers to achieve energy savings, efficiency improvements, and enhanced product quality, and provide technical renovation and upgrade services for existing plants.
Technology of Oil Extraction Process
www.palmoilindustry.com/oil-extraction-process.html
Our company's oil extraction solution is designed to efficiently recover oil remaining in the pomace/fiber after palm fruit and palm kernel pressing. The solution design strictly adheres to the three principles of safety, environmental protection, and energy conservation, reducing residual oil content to below 0.8% and improving the overall oil yield and economic efficiency of palm oil mills. This solution is highly adaptable and can meet the technical renovation needs of both new and existing factories of various scales.
Process Flow
The entire extraction process is an efficient closed-loop system, primarily comprising five key stages: pretreatment, solvent extraction, wet meal desolventization, mixed oil processing, and solvent recovery.
Pre-treatment stage (expansion process): This solution adopts advanced expansion pre-treatment technology to replace traditional crushing and steaming processes. After expansion, the oilseeds form uniform, porous, and structurally dense expanded particles, enhancing solvent penetration and achieving efficient oil extraction.
Solvent extraction stage: The expanded oilseed particles are thoroughly counter-currently contacted with food-grade hexane solvent in the extraction equipment, forming concentrated mixed oil and wet meal.
Wet meal desolventization stage: The wet meal containing extraction solvent is dried, cooled, and treated to inactivate anti-nutritional factors in the desolventizer, ensuring the final meal meets safe feed ingredient standards.
Mixed Oil Processing: After filtering impurities from the mixed oil, a multi-effect evaporation system is used to concentrate the mixed oil to an oil content of 80-90%. Residual solvent is then removed from the mixed oil in a stripping tower, yielding crude palm oil that meets refining requirements.
Solvent Recovery: Solvent-containing vapors generated in the desolventizer, evaporation system, and stripping tower are cooled and recovered via a condenser, enabling solvent recycling and reducing solvent loss rates.
Oil Extraction Process
Key Technologies
High-Efficiency Counter-Current Extraction Technology: By optimizing solvent ratio, extraction time, temperature, and oilseed expansion degree, extraction efficiency is maximized.
Energy-saving evaporation technology: Multi-effect evaporation, heat pump technology, and waste heat utilization significantly reduce steam consumption.
Low-loss solvent recovery technology: Efficient condensation, precise water separation, and advanced exhaust gas recovery ensure solvent loss is far below industry standards.
Safety and explosion-proof technology: Full system explosion-proof design (motors, instruments, electrical components), nitrogen protection, online monitoring of solvent concentration (LEL), CO2 fire suppression system, and comprehensive interlocked alarm system.
Automated control technology: DCS/PLC centralized control system enables precise monitoring, automatic adjustment, data recording, and alarms for process parameters (temperature, pressure, flow rate, liquid level, solvent concentration), ensuring safe and stable operation while reducing reliance on manual intervention.
Oil Extraction Process
Equipment
Expander: Utilizes screw extrusion expansion technology to form porous sponge-like expanded particles under high temperature and pressure, increasing oil porosity by 300% and reducing powder content by 90%. This effectively shortens extraction time, reduces solvent loss, and lowers residual oil content to below 0.5%.
Extractor (Ring-shaped): Expanded particles come into counter-current contact with the solvent. The ring-shaped design ensures uniform penetration without breaking the particles, with wet meal residual oil content of 0.3-0.5%.
DTDC Desolventizer: Desolventization, baking, and cooling are integrated into three layers. Wet meal flows from top to bottom. The first layer introduces direct steam for efficient solvent removal, the middle layer uses indirect steam for baking, sterilization, and enzyme inactivation, and the bottom layer cools and conditions the meal, producing qualified meal.
Evaporator: Uses a two-stage evaporation process to concentrate mixed oil. The mixed oil forms a film on the inner wall of the long tubes and rapidly evaporates upward. The design prevents coking and is highly efficient and energy-saving.
Stripping Tower: Concentrated mixed oil comes into countercurrent contact with superheated steam through the packing layer inside the tower, completely removing residual solvents to ≤0.05%. Nitrogen sealing is used to prevent oxidation and control the increase in crude oil acid value.
Oil Extraction Process
We provide professional services and support throughout the entire project lifecycle.
Pre-sales consultation and design: Our engineers assess customer needs through analysis and develop a comprehensive process solution based on this assessment.
Project implementation: Services cover the entire “turnkey” project process, from detailed design, equipment manufacturing and procurement, installation and construction, system commissioning, to final delivery.
Installation, Commissioning, and Start-up: We dispatch experienced engineers to provide on-site installation guidance, conduct comprehensive system commissioning until standards are met, and provide systematic training for the client's operators combining theory with practical operations.
Spare Parts Supply and After-Sales Service, including guaranteed supply of original spare parts, 24/7 technical hotline support, regular equipment inspections and maintenance recommendations, remote diagnostic services, and rapid on-site response to emergency faults.
Process Optimization and Upgrade Services: Through analysis and diagnosis of operational data, we tailor optimization solutions for customers to achieve energy savings, efficiency improvements, and enhanced product quality, and provide technical renovation and upgrade services for existing plants.