Coffee Spray Dryer

Coffee Spray Dryer

The 3L Coffee Spray Dryer is a compact centrifugal spray drying machine designed for liquid feed processing, coffee extract trials, beverage formulation work, and small-batch powder development. It combines controlled feeding, high-speed centrifugal atomization, hot-air drying, powder collection, and exhaust air movement in one floor-standing system. The machine is suitable for users who need to evaluate how a compatible liquid formulation behaves during spray drying before selecting a larger production solution. 

Coffee Spray Dryer Details

Peristaltic pump
The feed volume can be adjusted through the feed peristaltic pump, and the minimum processing volume is 50ml.

Atomizer speed 36000r/min

The particle size of the sample can be adjusted according to the atomizer speed

Floodlight
Illuminate the drying chamber to observe the spray drying process

• Ultra-Fast Thermal Evaporation: By maximizing surface area contact, the system evaporates 95% to 98% of moisture almost instantaneously, reducing thermal exposure and protecting material integrity.
• Co-Current Air Flow Protection: The co-current design ensures that hot air and atomized droplets travel in the same direction. As incoming air immediately contacts the cool liquid spray, ambient chamber temperatures drop quickly, preserving heat-sensitive compounds without thermal degradation.
• Superior Powder Quality: Rapid drying locks in particle geometry, producing spherical particles with excellent dispersibility, free-flowing characteristics, and superior solubility.
• Process Streamlining: Materials with initial moisture levels between 40% and 60% (and up to 90% for specialized feeds) can be converted directly into dry powder in a single step, eliminating post-drying crushing or screening processes.

Coffee Spray Dryer Structure

During operation, filtered air passes through the heating section and enters the top of the drying chamber through the hot-air distributor. The air is distributed through the chamber while the liquid feed is delivered by an adjustable peristaltic pump to the centrifugal spray head. At an adjustable speed of up to 36,000 r/min, the spray head converts the liquid into fine droplets. The enlarged contact area between the droplets and hot air allows moisture to evaporate rapidly. The average drying time stated for the machine is 1.0 to 1.5 seconds. Coarser finished powder is recovered from the collection section at the bottom, while exhaust air is discharged by the centrifugal fan.

Coffee Spray Dryer Application