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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).
 

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
circles at fine particle range triangle triangle circles
Countermeasure Against Viscosity Change
Air pressure Air pressure Fluid-pressure Revolution
Liquid High Viscosity
circles circle cross circles
Maintainability
circles circles circle triangle
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
Contact Us
Comparison with Other Spray Dryer
Usage Example
Each Model
Test, demonstration, custom processing