Spray Dryer
A Food-Grade
Centrifugal Spray Dryer is the gold standard for converting liquid food
products (like fruit pulps, milk, herbal extracts, or vegetable juices) into
fine, free-flowing powders.
Because it uses a
high-speed rotating disc (atomizer) instead of nozzles, it can handle thicker
liquids and produces very uniform particles.
1. Technical
Specifications (Industrial Scale)
|
Feature |
Details |
|
Material |
Full SS 304 or SS
316L (Mirror Polished $< 0.8\mu m Ra$) |
|
Water Evaporation |
5 kg/hr (Lab) to
5,000 kg/hr (Industrial) |
|
Atomizer Speed |
15,000 to 25,000
RPM (Inverter Controlled) |
|
Inlet Temperature |
160°C to 250°C
(Adjustable) |
|
Outlet
Temperature |
80°C to 100°C |
|
Drying Time |
1 to 5 Seconds
(Instantaneous) |
|
Collection System |
High-efficiency
Cyclone Separator + Bag Filter |
2. Core Components
for Food Applications
- Centrifugal Atomizer: The heart of the
machine. A spinning disc flings the liquid into a fine mist. It is less prone to clogging than nozzles, making it ideal for pulpy food
liquids.
- Drying Chamber: A large vertical tank
where hot air meets the mist. For food grade, it must have no
dead corners to prevent bacterial growth.
- Air Filtration (HEPA): Mandatory for food
grade. It ensures that the air used for drying is 99.9% free of dust and
contaminants.
- CIP (Clean-In-Place) System: Internal
spray balls that automatically wash the entire chamber with cleaning
agents and hot water between batches.
- Cyclone Separator: Uses centrifugal force
to separate the dried powder from the exhaust air.
3. Food Industry
Applications
- Fruit & Vegetable Powders: Mango,
tomato, beetroot, and garlic powder.
- Dairy: Milk powder, whey protein, and
creamer.
- Beverages: Instant tea, coffee, and fruit
juice concentrates.
- Nutraceuticals: Herbal extracts, vitamins,
and protein supplements.
