Food · Dairy and plant protein
Protein Powder Spray Dryer
Pressure and centrifugal spray dryers for whey, casein, plant protein and collagen peptides. Short drying times protect solubility and bioactivity.
Why pressure drying
Bigger particles dissolve faster.
Pressure nozzles make particles of about 100–300 µm. Their lower surface area lets water penetrate quickly, so the powder floats and clumps less. Centrifugal drying gives finer 50–150 µm particles that trap air and need harder stirring.
Short drying times reduce the risk of protein denaturation and lower energy use. The pressure system is simple to maintain, and anti-caking agents such as silica or maltodextrin can be mixed into the feed.
- Faster wetting, less clumping
- Shorter drying protects solubility and bioactivity
- Lower equipment and maintenance cost
- Pressure (10–50 MPa) tunes droplet size
- Dual CIP tanks for hygienic cleaning
Reference case
QZR-50 protein powder dryer
Guangzhou Hairui Pharmaceutical. Pressure type with dual cleaning tanks.
| Feed solids | 35% |
|---|---|
| Water evaporation | 200 kg/h |
| Liquid spray rate | 308 kg/h |
| Powder output | 108 kg/h |
| Inlet / outlet air | 180–190 °C / 90 °C |
| Final moisture | ≤ 5% |
| Particle size | Mostly 180–250 µm |
| Drying air | 6,864 kg/h |
| Heat source | Steam heat exchanger + electric |
| Steam | 500 kg/h at 0.6 MPa |
| Electrical | About 110 kW incl. 30 kW cleaning system |
| Exhaust | Two-stage cyclone + water film scrubber |
Figures from a delivered plant. Our pressure dryers reach 20 t/h.
Products
Protein powders we dry
Dairy protein
Plant protein
Collagen
Specialty
FAQ
Questions about this application
Pressure or centrifugal for protein powder?
Pressure nozzles give coarser 100–300 µm particles that dissolve faster, so they suit most protein powders. Centrifugal drying gives finer 50–150 µm powder. We test your protein on both if needed.
How do you avoid denaturation?
By keeping drying times short and setting inlet and outlet temperatures to the protein. In the reference plant the outlet air runs at 90 °C.
Can the dryer be cleaned in place?
Yes. CIP systems with tanks and telescopic cleaning heads clean the tower and ducts without dismantling.
Next step
Send us your material. We will size the dryer.
Tell us the material, solids content and the capacity you need. An engineer replies within one working day, and we can run a trial on your sample in our test center.