Introducing the next-generation Closed Loop Spray Dryer – the ultimate solution for drying organic solvents, flammable compounds, volatile APIs, and oxygen-sensitive materials.
Engineered for maximum safety, environmental compliance, and product integrity, our sealed nitrogen/inert gas circulation system eliminates explosion risks, minimizes solvent emissions, and ensures unparalleled product purity.
Ideal for pharmaceuticals, fine chemicals, battery materials, and high-value extracts.
Basic Technical Specifications
- Sample Material: aqueous and most of organic solutions
- Handling capacity : 50-2000ml/h
- Temperature setting range: inlet 60~250°C.
- Drying time: 1.0~1.5 second.
- Controller: Color LCD touch screen parameters display (display inlet and outlet temperature, peristaltic pump speed, oxygen concentration, deblocker frequency).
How Does Closed Loop Spray Dryer Work?
The peristaltic pump enters the sample liquid from the container through the nozzle into the drying chamber, and the compressed nitrogen will enter the drying chamber from the outer casing to make the liquid particulates.
The heated nitrogen enters the upper layer and meets the liquid particulates after spraying, and the particles begin to dry.
The dried powder particles are separated from the exhaust gas through the cyclone separator and enter the collection bottle.
The solvent is then recovered by condensation in the refrigeration unit, and clean nitrogen is transferred to the next cycle.
Why Choose Our Closed Loop Spray Dryer?
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Absolute Safety for Hazardous Solvents
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Explosion-Proof Design: Operate with ethanol, acetone, DCM, hexane, or ethers safely using inert gas (N₂/Ar) circulation. Oxygen levels maintained <5% throughout the drying cycle.
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Zero Operator Exposure: Fully sealed system prevents toxic vapor release, meeting ATEX, and GMP safety requirements.
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Solvent Recovery & Cost Savings
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>99% Solvent Reclamation: Integrated condenser system captures and recovers up to 99% of organic solvents – slashing raw material costs and waste disposal fees.
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Sustainable Operation: Dramatically reduce VOC emissions and environmental footprint vs. open systems.
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Protect Product Integrity
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Oxygen-Sensitive Processing: Perfect for drying pyrophoric materials (e.g., battery cathodes), sensitive APIs, or flavors vulnerable to oxidation.
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Low-Temperature Option: Combine closed-loop technology with 35–80°C inlet temps for ultra-gentle drying of biologics.
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Smart Automation & Compliance
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PLC Touchscreen Control: Monitor pressure, temperature, and solvent recovery in real time.
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Self-Sealing Quick-Change Parts: Minimize downtime during cleaning or product changeover.
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Application
- Biopesticide
- Easily oxidized materials
- Materials containing organic solvents
- Materials that produce toxic gases during drying