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Supercritical Fluid Extraction Systems
Discover environmentally friendly, high-efficiency extraction solutions with Polat Makina’s Supercritical Extraction Technologies, designed to preserve nature’s purest properties.
Application Areas
Food
Natural Flavors and Extracts
Essential Oils
Plant Oil Extraction
Natural Colorants
Antioxidants and Bioactive Compounds
Decaffeination (Tea and Coffee Extraction)
Spice and Botanical Extracts
Hops Extraction
Oil Fractionation and Purification
Removal of Pesticides and Undesirable Compounds
Chemicals
Purification and Fractionation
Organic Compound Extraction
Polymer Processing Applications
Textile Dyeing and Processing Applications
Micro- and Nanoparticle Production
Aerogels and Porous Materials
Supercritical Drying
Precision Cleaning of Electronic Components
Hydrocarbon Purification
Pharmaceuticals
Active Ingredient Extraction
Bioactive Compound Purification
Production of Plant-Derived Active Ingredients
Pharmaceutical Raw Material Purification
Micronization and Particle Production
Encapsulation
Sterilization
Cosmetics
Essential Oils
Botanical Extracts
Natural Active Ingredients
Fragrance and Aroma Compounds
Natural Pigments
Antioxidant Extracts
Cosmetic Oil Extraction
Supercritical Fluid Extraction Systems in Numbers
1000 L
We offer a wide range of systems, from 0.5-liter laboratory-scale research and development units to industrial-scale extractors with capacities of up to 1,000 liters.
5000 kg/h
Our diaphragm and mechanical piston CO₂ pumps are designed for precise high-pressure and flow-rate control, delivering flow capacities of up to 5,000 kg/h.
1000 Bar
We develop systems with operating pressures of up to 1,000 bar for the selective extraction and purification of heat-sensitive and high-value compounds.
Supercritical Fluid Extraction (SFE) Systems
Product Operating Principle
Supercritical Fluid Extraction (SFE) is a selective separation method in which a fluid is used as a solvent after being brought above its critical temperature and pressure. The most commonly used fluid, carbon dioxide (CO₂), combines the high density and solvent power characteristic of liquids with the high diffusivity and low viscosity characteristic of gases under supercritical conditions. These properties enable target compounds to be selectively extracted from raw materials.
- Extraction Stage: The raw material to be processed is loaded into the extractor. Supercritical CO₂, brought to the appropriate pressure and temperature, penetrates the raw material, dissolves the target compounds, and carries them out of the extractor with the flow.
- Flow and Pressure Control: CO₂ is brought to the required process conditions using a high-pressure pump system and fed into the extractor at a controlled flow rate. Pressure, temperature, and CO₂ flow rate are precisely controlled to establish the optimal extraction conditions for the target compounds.
- Separation Stage: The CO₂ carrying the target compounds is transferred from the extractor to the separators. By carefully adjusting pressure and temperature, the solvent power of CO₂ is reduced, allowing the dissolved compounds to separate from the CO₂ and be collected as extract. When multiple separators are used, different compounds can also be separated and fractionated in stages.
- CO₂ Recovery: The CO₂ separated from the extract can be returned to suitable process conditions, recovered within a closed-loop system, and reused. Because CO₂ separates readily from the product when pressure is reduced, the risk of residual solvent in the product is significantly lower than with conventional organic solvents.
Advantages of Supercritical Fluid Extraction (SFE) Systems
Why Choose Polat Supercritical CO₂ Extraction?
Easy Availability & Safety: CO₂ is a readily available, non-flammable, and non-explosive fluid. Compared with organic solvents, it offers significant advantages in terms of process safety.
Environmentally Friendly Process: The use of supercritical CO₂ can significantly reduce the need for conventional organic solvents. Low solvent consumption and the ability to recover and reuse CO₂ support the development of more sustainable processes.
High Selectivity: The solvent power of CO₂ can be controlled by adjusting pressure and temperature. This enables the selective extraction of target compounds and the fractionation of different components.
Solvent-Free Extraction: CO₂ can be easily separated from the product by reducing the pressure at the end of the process. This reduces the risk of residues associated with organic solvents and can minimize the need for subsequent purification steps.
Low-Temperature Processing: With a critical temperature of approximately 31°C, CO₂ enables extraction at relatively low temperatures. This helps preserve flavors, volatile compounds, and other heat-sensitive bioactive substances.
CO₂ Recovery & Reuse: In closed-loop systems, most of the CO₂ can be recovered at the end of the process and reused. This helps reduce CO₂ consumption and operating costs.
Preservation of Product Quality: Low-temperature processing and limited exposure to oxygen help preserve the properties of oxidation-sensitive and heat-sensitive compounds.
PLC- and SCADA-Controlled Automation: Pressure, temperature, CO₂ flow rate, and other process parameters can be precisely monitored, controlled, and recorded through Programmable Logic Controller (PLC) and Supervisory Control and Data Acquisition (SCADA) systems. This facilitates process repeatability and optimization.
Supercritical Fluid Systems
KEY FEATURES
Unique Product Details
316-Grade Stainless Steel Process Equipment
High-pressure equipment such as extractors, separators, and accumulators is manufactured from solid 316-grade stainless steel or cold-drawn, thick-walled tubes, depending on process and design requirements. Bayonet, Tri-Clamp, threaded, and other closure and locking mechanisms are engineered to ensure a high level of safety, taking operating pressure and service conditions into account.
Process-Specific High-Pressure Pumps
Hermetically sealed diaphragm or mechanical piston high-pressure pumps are selected according to system capacity, operating pressure, fluid properties, and process requirements. The pump and flow control system are selected and designed for each application to ensure precise flow-rate control and stable process conditions.
GAMP 5- and FDA 21 CFR Part 11-Compliant Automation
PLC-, HMI-, and SCADA-based automation infrastructures are available to meet the requirements of the pharmaceutical and food industries. Systems can be configured in line with the GAMP 5 approach and FDA 21 CFR Part 11 requirements, incorporating functions such as recipe management, user access control, audit trails, and the recording of alarms and process data.
PED- / ASME-Compliant Pressure Equipment
Pressure equipment can be designed in accordance with PED or ASME requirements, based on project specifications and the applicable regulations in the country where the machine will be installed. The necessary engineering calculations and documentation are prepared, and hydrostatic pressure tests are carried out under the supervision of an authorized inspector or notified body, as required by the applicable conformity assessment procedure, to complete the certification process.
VIDEOS
Product Details
SFE Technology and Operating Principle
Discover a green extraction process that uses supercritical carbon dioxide to isolate natural compounds, oils, and valuable extracts in their purest form, without leaving chemical solvent residues.
Engineering Insights
Referans Projeler
Customer Success Stories
During testing, we observed very high efficiency from the Polat Makina decanter centrifuge. It reduced the sludge density from 69 ft³/lb to 65 ft³/lb, which is a very significant result for us. We believe we made the right choice.
Mehmet Talip Bektaş
TPAO Head of Machinery Supply Department
Customer Success Stories
Polat Makina has become one of our preferred partners thanks to the efficiency we achieve in every process where we use its equipment and its unwavering commitment to product and service quality.
Mümin Hekimoğlu
Utilities Manager, Lezita Meat Processing Facility
I was truly proud and impressed by the technology I saw. My respect grew even further for the person who started out in traditional metalworking and went on to build such an impressive factory. As I toured the facility, I felt as though I were walking through my own factory. It made me want to work with the person who inspired that feeling in me.
Mustafa Özpek
Chairman of the Board, Özpekler Fisheries Industry and Trade Ltd. Co.
F.A.Q.
Frequently Asked Questions
What Are the Advantages of Supercritical CO₂ Extraction over Conventional Methods?
One of the key advantages of supercritical CO₂ extraction is the ability to adjust process conditions. By varying pressure and temperature, the solvent power and selectivity of CO₂ can be controlled to optimize the extraction of target compounds. With a critical temperature of approximately 31°C, CO₂ enables processing at relatively low temperatures, reducing the risk of thermal degradation in heat-sensitive compounds. At the end of the process, CO₂ can be easily separated from the product, reducing the need for conventional organic solvents and the associated risk of solvent residues. In closed-loop systems, CO₂ can also be recovered and reused, helping reduce solvent consumption, waste generation, and operating costs.
Which Raw Materials Can Be Processed Using Supercritical CO₂ Extraction?
Is My Product or Raw Material Suitable for Supercritical CO₂ Extraction?
Which Compounds Can Be Extracted Using Supercritical CO₂?
Are the Same Pressure and Temperature Settings Used for Every Product?
