Application of low temperature spray drying technology

Description

Descriptions

Low-Temperature Spray Drying is an advanced drying technology that involves atomizing the material into fine particles and drying them at low temperatures. Our Low Temperature Spray Drying technology preserves the material’s activity, nutritional content, and natural flavor, making it ideal for temperature-sensitive materials like proteins, enzymes, and vitamins. It offers high product quality, fast drying speed, low energy consumption, and is suitable for large-scale industrial production.

Technical Parameters

model	SD-3000F
force	12KW
Voltage	380V
volume	1000/lot
Spray freezing temperature	＜-30℃
cold trap temperature	≤-60℃
Vacuum pump power	2KW
Maximum Vacuum Pressure	＜20Pa
spray pressure	2-5 Bar（adjustable）
compressed air	4.2 Cubic meters per hour
Nozzle Type	Two-fluid nozzles
nozzle spray	0.7mmstandard/（0.5/0.75/1.0/1.5/2.0mm selectable）
Fuselage Material	SUS-304 stainless steels
operating mode	Auto/Manual
Vacuum Pump Plug	Yes
vacuum connection	Standard Fixture
Cyclone separator/cylinder seal	silicone
Vacuum level display	numerical
perspective	1600*1080*1750mm
weights	300 kg
showcase	7-inch LCD
Sample Safety	cryogenic vacuum
grain size	1-100 micron

Working principle of Low Temperature Spray Drying

The working principle of a freeze spray dryer mainly includes three key steps: pre-freezing, spray atomization, and low-temperature drying.
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Pre-freezing stage: The raw material liquid is first sent to the pre-cooling system. And quickly cooled to below freezing at an extremely low temperature to form tiny ice crystals or ice particles. This process preserves active ingredients and nutrients, while also reducing volume change and improving drying efficiency.

‌Spray atomization stage: High-pressure nozzles spray pre-frozen ice crystals or particles into the drying chamber. Instantly breaking them down into tiny ice mist particles. These particles are uniform in size and have a greatly increased surface area. Providing good conditions for the subsequent drying process. In the atomization process, precisely controlled nozzle design and airflow speed are key, ensuring uniform dispersion of droplets and efficient heat transfer.

‌Low-temperature drying stage: In the drying chamber, these tiny ice mist particles come into contact with hot air or inert gas, and quickly sublimate into water vapor through heat exchange, thereby achieving drying. To preserve the heat-sensitive components in the material, we maintain a low-temperature environment throughout the process. Meanwhile, our precise exhaust system continuously discharges exhaust gas containing water vapor, steadily reducing the humidity in the drying room until it reaches the desired level of dryness.

The application fields of the freeze spray dryer include food, medicine, biological products and other fields. Due to its high efficiency, gentleness and retention of nutrients, the freeze spray dryer has demonstrated its irreplaceable technical advantages in these fields.

Operation steps of Low Temperature Spray Drying

1. Careful preparation is required before starting to check whether all parts of the equipment are intact.
2. Turn on the refrigeration system to make the drying room reach the preset low-temperature environment.
3. Start the feed pump and pump the pre-treated liquid material to the nozzle. The material is atomized into tiny droplets by high-pressure gas at the nozzle and enters the low-temperature drying chamber.
4. In the drying chamber, tiny droplets rapidly freeze into ice crystals, then sublimate into water vapor under hot air, and are collected as solid particles on the collector.
5. After drying, shut off the feed pump and refrigeration system, and allow the equipment to naturally warm up to room temperature. Finally, open the collector and take out the dried product for subsequent processing.

About us

TOPTION is a leading manufacturer of cryogenic spray drying equipment, serving the food, pharmaceutical, and biological products industries with innovative solutions. We leverage expertise and cutting-edge technology to deliver high-performance equipment that sets new standards for efficiency and sustainability. We prioritize our customers’ needs and provide expert technical support and services to help them achieve their production objectives. If you want to know more about low-temperature spray drying equipment, please feel free to contact [email protected].