Characteristics and Components of a Laboratory Spray Dryer

laboratory spray dryer

A laboratory spray dryer typically includes the following functional features and components:

Spray Nozzle: The spray nozzle is the core component that atomizes the feed liquid into a fine mist or spray. Common nozzle types used in mini lab spray dryers include two-fluid nozzles, pressure nozzles, and ultrasonic nozzles.
Drying Chamber: The drying chamber is where the atomized droplets come into contact with the hot drying air, facilitating the evaporation of moisture and the formation of dry particles.
Air Handling System: This includes the air compressor, heater, and blower that generate and regulate the flow of hot drying air into the drying chamber.

Feed Pump: A peristaltic or other type of precision pump is used to deliver the feed solution or suspension at a controlled flow rate to the spray nozzle.
Temperature and Airflow Control: Mini lab spray dryers typically have integrated control systems to monitor and adjust the inlet air temperature, airflow rate, and other process parameters to optimize the drying process.
Product Collection System: Dried particles are collected at the bottom of the drying chamber, often using a cyclone separator or other particle collection mechanism.
Cleaning and Maintenance Features: Mini lab spray dryers may include features like easy-to-remove components, inspection windows, and access panels to facilitate cleaning and maintenance.
Compact and Benchtop Design: The overall design of a mini lab spray dryer is typically compact, allowing it to be placed on a laboratory benchtop or in a fume hood for safe operation.
Versatility: Many mini lab spray dryers are designed to handle a variety of feed materials, including solutions, suspensions, and slurries, by allowing for adjustments to the nozzle, airflow, and other parameters.