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Shanghai Yacheng Instrument Equipment Co., Ltd
Working Principle and Characteristics of Laboratory Low Temperature spray Dryer
Date: 2025-06-13Read: 8
The laboratory low-temperature spray dryer is specially designed for heat sensitive materials. It protects the activity of materials through low-temperature rapid drying technology. Its core working principles and characteristics are as follows:
1、 Working principle
1. Material atomization: The material liquid (solution, suspension, etc.) is dispersed into micrometer sized droplets through a centrifugal atomizer or pressure nozzle, greatly increasing the surface area to accelerate water evaporation.
2. Low temperature drying: Mist droplets come into contact with low-temperature hot air (or inert gas) at 35-80 ℃, and complete water evaporation within seconds to form a dry powder.
3. Vacuum assisted (some models): By reducing the boiling point of water in a vacuum environment (such as boiling point of about 40 ℃ at a vacuum degree of 0.09 MPa), ultra-low temperature drying can be achieved at 30-80 ℃, further reducing thermal damage.
2、 Core Features
（1） Material protection advantages
1. Retain the activity of thermosensitive components: Avoid oxidation or decomposition of thermosensitive components such as proteins, enzymes, vitamins, etc. in low temperature environments (35-80 ℃) to maintain biological activity and nutrition.
2. Maintaining physical state and color: Low temperature drying reduces material denaturation, maintains original flavor, solubility, and particle shape, suitable for high sugar or viscous materials.
（2） Technical characteristics of equipment
1. Precise temperature control system:
The inlet air temperature can be as low as 35 ° C (such as DACTS dry air system), with a small temperature fluctuation range, suitable for different material requirements.
2. Efficient drying speed:
Droplets come into instant contact with hot air, and the drying time is only 1-30 seconds, greatly reducing the processing cycle.
3. Widely applicable scope:
Applicable materials include biological agents, drugs, probiotics, nano materials, high sugar vegetable juice and polymer lotion, etc.
4. Flexible operation and security:
Small scale design is suitable for laboratory research and development; Some models support inert gas circulation or vacuum operation to avoid the risk of material oxidation or solvent explosion.
The laboratory low-temperature spray dryer solves the problem of activity retention of thermosensitive materials through a mild drying environment (35 – 80 ℃) and instant drying technology, and is especially suitable for fine drying requirements in the fields of food, biomedicine and nanomaterials.
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