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13918491912
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Shanghai Yuming Instrument Co., Ltd
Extensive Application of Explosion proof Closed spray Dryer
Date: 2025-07-11Read: 6
The explosion-proof closed spray dryer, with its unique inert gas circulation system and multiple safety protection design, has been widely used in many high-risk material processing fields. The specific scenarios include:
1、 In the field of pharmaceuticals and biological products
1. Containing organic solvent drug intermediates
Suitable for drying antibiotics, enzyme preparations, and thermosensitive drugs dissolved in solvents such as ethanol and acetone. Low temperature mode (minimum 40 ℃) combined with PID constant temperature control effectively preserves the active ingredients of drugs, with a yield 20% higher than traditional vacuum drying, while meeting GMP clean production requirements.
2. Chinese herbal extracts and natural products
Drying natural flavors and plant extracts containing ethanol, using a closed system to prevent aromatic components from evaporating, with a solvent recovery rate of over 95%, significantly reducing production costs.
2、 In the field of new energy and advanced materials
1. Preparation of lithium battery materials
Used for drying precursors of positive electrode materials such as lithium iron phosphate (LFP) and ternary materials (NCM/NCA), the explosion-proof control system monitors oxygen concentration (<1%) and pressure in real time, and integrates pressure relief to ensure safety. The powder recovery rate is increased by more than 15%.
2. Solid state battery electrolyte
Sulfide/oxide electrolytes are dried under full nitrogen protection to avoid moisture absorption or reaction failure with CO ₂, and support segmented drying processes (such as low-temperature pre drying+high-temperature curing).
3. Precision ceramics and superhard alloys
When processing non oxidized ceramic powders such as alumina and aluminum nitride, a nitrogen environment is used to isolate oxygen and prevent high-temperature oxidation, resulting in uniformity of powder particle size (D50 deviation<5%); The recovery rate of solvents (such as ethanol) in the drying of tungsten carbide cobalt alloy precursor exceeds 95%.
3、 Chemical and hazardous chemicals field
1. Flammable and explosive chemical slurry
Suitable for drying materials containing acetone and toluene, such as pesticide intermediates and lithium battery electrolytes, with ATEX explosion-proof certification and solvent recovery systems to reduce hazardous waste emissions.
2. Toxic Material Handling
A closed system can dry highly toxic materials such as cyanide and heavy metal compounds, avoiding the leakage of toxic gases and ensuring operational safety.
4、 In the field of food and bioactive substances
1. Thermosensitive food additive
Probiotic powder, vitamins and other materials can be dried in a low-temperature inert gas environment with a high activity retention rate of 88%.
2. Natural product fragrance preservation and drying
The volatile flavor substances (such as essence) are dried in closed mode at low temperature, and the aromatic components can be retained by more than 90%.
Core technical support
Four fold explosion-proof system: nitrogen inerting (oxygen content<3%), pressure relief valve, spark detection, automatic fire extinguishing device linkage, response time<500ms.
Efficient solvent recovery: Plate condenser (refrigerant -30 ℃) combined with distillation unit, solvent recovery purity reaches 99%, and recycling rate is ≥ 95%.
This device has solved the drying bottleneck of high-risk materials through intrinsic safety design and resource recycling, and has become a core equipment for high value-added industries such as pharmaceuticals and new energy.
