Micro Mist Spray Dryer
Four-fluid nozzle Micro Mist Spray Dryer (MMSD)
Micro Mist Spray Dryer
Massive spraying of a single micron droplet become possible.
Particle size distribution is sharp.
Making a droplet of few microns in a large amount at production level is possible in atomization
device (Four-fluid nozzle) that our company has developed.
It is called "micro mist dryer", spraying with the atomization device (Four-fluid nozzle).
It is called "micro mist dryer", spraying with the atomization device (Four-fluid nozzle).

Four-fluid nozzle types and spraying state
Straight edge nozzle
Circle edge nozzle



Characteristics of Four-fluid nozzle
- 1.Spraying the finest and uniformest mist(1 to 10 micron) from small to large capacity.
- 2.Spray high viscous liquid(up to 5000cp).
- 3.Mixing two different liquid makes new kinds of product.
- •atomize two kinds of liquid mixing at nozzle tip.
Principles of spraying the finest mist
- •The nozzle has each two passages for gas and liquid, and the nozzle edge profile generates one collision focal spot for fluid exit.
- •The nozzle edge profile generates.
Features of Four-fluid nozzle
- •Large atomizing capacity of particles in single micron size.
- •Controllable liquid particle size.
- •Sharp and narrow particle size distribution is available.
- •Continuous atomizing operation is possible for hours without the trouble of clogging, as the nozzle has a self-cleaning function and the nozzle is outside mixing type.
- •Control spraying capacity by adjusting the edge length.
Micro Mist Spray Dryer | Spray dryer | |||
Four-fluid nozzle | Two-fluid nozzle | Pressure nozzle | Rotary atomizer | |
Droplet Particle Diameter |
Fine particle | Fine particle | Coarse particle | Coarse particle |
5 - 15µm | 5 - 30µm | 0 - 150µm | 10 - 100µm | |
Atomization Uniformity |
Even | Uneven | Slightly uneven | Even |
Method of Atomization |
Compressed Gas | Compressed Gas | Pressurizing Pump | Motor |
Atomization Energy |
Big | Big | Small | Small |
Process Liquid Capacity/1 Nozzle |
High | Low | Medium | High |
Droplet Diameter Control |
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Countermeasure Against Viscosity Change |
Air pressure | Air pressure | Fluid-pressure | Revolution |
Liquid High Viscosity |
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Maintainability |
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Spray Angle |
180° | Under 30° | Under 60° | 180° |
Spray Shape |
Hollow cone | Hollow cone fine | Full cone fine | Hollow cone |
|
Few microns | Few dozen microns |
Surface Area |
If 5µm is 1 | 50µm is 100 |
Volume |
If 5µm is 1 | 50µm is 1000 |
Surface Area in Same Volume |
If 5µm is 1 | 50µm is 1/10 |
Number of Pieces in 1ml |
Approx. 15 billion 280 million in 5µm | Approx. 10 million and 528 thousand in 50µm |
Drying Time |
Instant | Few seconds |
Drying Temperature |
Can be lower. Drying temperature below the boiling point is possible. | Difficult at temperature below the boiling point. |
Undried |
None | Exhaust gas temperature and powder residence time should be considered. |
Slurry Primary Particle |
1 to 2µm is requireds | About below 10µm |
Handling |
Bad | Good |
Collecting Method |
Cyclone + bag filter or bag filter only |
Cyclone Bag filter as a dust collector |
Liquidity |
Bad | Good |
Solubility |
Good | Bad |
Tap Density |
Good | Bad |
Reactivity |
Good | Bad |
Product Novelty |
Present | None |