Laboratory Small-Scale Low-Temperature Spray Dryer QFN-DW-1

       Qiaofeng's low-temperature spray dryer (QFN-PWDW series spray dryer can operate within the range of 35°C to 100°C) enables continuous low-temperature spray drying at 35°C, achieving high recovery rates while preserving material activity. It can be customized into a combined high-and-low-temperature spray dryer (QFN-PWGD series, capable of operating within the range of 35°C to 220°C), both of which support spray drying. Typical materials:Semaglutide, amino acids,Peptides,Proteases,、Camel milk,、Enzyme preparations,、Plant extracts,etc. This low-temperature equipment has been professionally developed by our company for heat-sensitive materials, preserving the original activity of materials such as polymers, microorganisms, and sugar-containing materials. It can be customized as a combined high-and-low-temperature unit per user requirements, suitable for both low-temperature and high-temperature experimental use, serving as a multi-purpose integrated device.

Laboratory-scale low-temperature spray dryer; 
       1. Resolves the issue of material moisture reabsorption; 
       2.    SampleProcessing capacity: 50 ml/hour; 
       3. Inlet air temperature: 35–140°C (if the QFN-GD series is selected, inlet air temperature: 35–220°C for a wide-range drying capability); 
       4. Upgradable to a combined high-and-low-temperature spray dryer;

       The low-temperature spray dryer is primarily suitable for universities, research institutes, and food, pharmaceutical, chemical, and industrial enterprises, as well as laboratory production of micro-granular powders. It exhibits broad-spectrum applicability to solutions such as emulsions and suspensions, and is suitable for drying heat-sensitive materials such as biological products, biological pesticides, and enzyme preparations. Since the sprayed material is only exposed to the drying air system when atomized into fine droplets, it undergoes rapid heating only, preserving the active components of these materials from degradation after drying. This model of spray dryer can achieve both low-temperature atomization drying at ambient temperature and dual-mode high-and-low-temperature atomization drying.

       ● Adopts a P.I.D. temperature control system. 
       ● Motor phase-reversal and overload protection functions. 
       ● Simple and compact structure, easy maintenance, and extremely low failure rate. 
       ● The entire unit is constructed of stainless steel, offering an elegant and attractive appearance. 
       ● Color LCD touchscreen parameter display: inlet air temperature / outlet air temperature / peristaltic pump speed / airflow rate / needle cleaning frequency. 
       ● Qiaofeng's innovative drying air system enables low-temperature drying. 
       ● Fully automatic control: one-touch startup; after setting spray process parameters, the peristaltic pump automatically activates once the temperature reaches the preset value, with the touchscreen displaying an operational animation and a clearly presented running process; for shutdown, simply press the stop button, and the machine performs a safe automatic shutdown. 
       ● Manual control: for adjustments to process parameters during experiments, the system can be conveniently switched to manual mode for parameter setting. 
       ● Equipped with a nozzle cleaner (needle) that automatically clears blockages when the nozzle is clogged, with an adjustable cleaning frequency. 
       ● Shutdown protection function: When shutting down, simply press the stop button, and the machine will immediately stop all operations except for the fan, ensuring that the heating components are not damaged due to incorrect operation (e.g., forcibly stopping the fan). 
       ● The spray, drying, and collection systems are manufactured from stainless steel, ensuring the drying process is conducted in a contamination-free environment. 
       ● Built-in imported oil-free air compressor; the particle size distribution of the sprayed powder follows a normal distribution, with excellent flowability and very low noise, below 60 dB. 
       ● Two-fluid spray atomization structure; the entire unit is manufactured from stainless steel, featuring a compact design that requires no auxiliary equipment. 
       ● The drying temperature control design employs real-time PID constant-temperature control technology, ensuring accurate temperature regulation across the full temperature range, with heating control precision of ±1°C. 
       ● The feed rate can be adjusted via the feed peristaltic pump, with a sample capacity of up to 50 ml. 
       ● The dried powder product has uniform particle size, with over 95% of the powder falling within the same particle size range. 
       ● For viscous materials, a nozzle cleaner (needle) is provided, which automatically clears blockages when the nozzle is clogged, with an adjustable cleaning frequency.

Cooling system technical parameters: 
       Designed with a microcomputer-based precision constant-temperature control system. 
       A meticulously designed refrigeration system delivers high cooling efficiency, rapid temperature reduction, low noise, and minimal vibration; the cascade compressor refrigeration system and heat exchange system ensure reliable instrument operation and rapid cooling. 
       Ergonomic design: foldable handles on both sides facilitate instrument transport; heavy-duty locking casters are employed for ease of movement. 
       The low-temperature tank body adopts an integral foaming process, providing excellent thermal insulation performance and effectively reducing cooling loss. 
       The professional circulation design ensures good horizontal and vertical uniformity of the liquid within the tank, with temperature fluctuation of ±0.05°C and display resolution of 0.1°C. 
       The inner tank and housing are both manufactured from high-quality stainless steel and integrated with the dry air system, effectively reducing the dry air temperature.

Advantages of the low-temperature spray dryer equipment: 
Comparison with other types of drying equipment:

Technical Parameters:

Note 1: Moisture evaporation rate is based on an inlet air temperature of 80℃. Note 2: For equipment requiring a larger evaporation capacity, please inquire online or contact our company.