Range of Applications:
Drying—The fluid bed is an extremely efficient method for drying solids. The fluid bed gently and evenly
THE 300N FLUID-BED
dries each particle by pulling moisture from the surface. This is due to the excellent heat transfer which results
in reduced drying times.
Granulation/Agglomeration—Granulation or Agglomeration is the adhesion of small particles, such
as powders, into granules using a liquid binder. The binder is sprayed onto the fluidizing particulates thus
causing the small particles to adhere to one another and eventually forming larger granules. Often granulation
is followed by drying and possibly cooling. All these processes can be carried out in the fluid bed by simply
adjusting parameters.
Particle Coating—A coating is used to selectively influence the product characteristics and usually requires a very uniform application that results in an absolute seal without mechanical damage or tear. The fluid
bed’s gentle handling of the material and ability to apply a very even coating makes it ideal for coating processes.
Air Classification/Size Separation—The fluid bed can be used to separate particles of various sizes.
The ability to precisely control the amount of air flowing through the fluid bed allows the operator to efficiently separate the smaller particles from the larger particles.
Top Spray Application Uses:
Granulation/Agglomeration
Coating
1. Reduction in the amount of fines
1. Lipid coating
2. Improvement in the flow ability
2. Taste masking
3. Elimination of segregation
3. Moisture and oxidation-protection coatings
4. Homogenous distribution of all components
4. Enteric coatings
5. Improved compressibility for tableting
5. Visual appearance
COAT
DRY
AGGLOMERATE
AIR CLASSIFICATION
The 300N is a multi-purpose fluid bed designed specifically for small to intermediate scale
spray coating, granulation and drying of particulates and powders. The 300N batch sizes range
from 5L to 20L. The 300N provides maximum efficiency for drying and granulating.
The drying/granulating/coating process is easily monitored through the transparent upper plenum. The system is ideal for process development, collecting scale-up data for commercial
processes and for small quantity production.
The 300N is equipped with a pivoting product bowl for easy discharge of the processed product. The design of the pivoting product bowl makes emptying the bowl quick and easy and
eliminates strain on the operator.
6. Controllable bulk density
7. Optimized solubility
Bottom Spray Application Uses:
Coating
1. Aqueous or organic based coatings (organic requires explosion
proof design)
300N Fluid Bed
2. Polymer solutions or dispersions
3. Controlled release
4. Enteric coating
The 300N is not rated for use with organics. ACT offers batch and continuous fluid bed systems rated for
use with organics.
5. Coating of very fine particles
6. Active ingredient layering
300N Fluid Bed
Bowl Extended
Key Components
Product Bowl: Constructed of 304 stainless steel with a fluidization plate, 9” ID, bolted at
the base. Depending on the product, the fluidization plate can be perforated, sintered, or
grid to provide sufficient fluidization
Exhauster: The fluidization velocity or airflow is controlled with a variable speed 240 V
exhauster motor. The exhauster is capable of providing 40 to 500 ft/min to the fluidizing
chamber while providing 40 inches WC of pressure drop across the system.
Air heater: An 18 kW electric duct heater adjusts the temperature of the inlet air stream
from ambient to a maximum of 250o F.
Dust Collection: The internal bag house, four standard polyester cartridge filters in the
upper section, removes the dust from the exhaust air. The filters are cleaned with an air
pulse system (manual or automatic).
Elevation Plan
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
Prefilter
Heater
Lower Plenum
Product Bowl
Upper Acrylic Plenum
Pleated Cartridge Filters
Upper Plenum
Air Control Panel
Blower Assembly
Control Panel
Carts
Bowl Pivot/Discharge Arm
H
G
A
F
B
Differential pressure across air distribution plate and bed, inches WC
Differential pressure across filter cartridges, inches WC
L
E
D
C
Instrumentation and Controls:
Air heater control: Controls temperature of fluidizing air from ambient to 250˚F
Temperature Indicators:
• Inlet Air
• Product
• Outlet Air
Air velocity: Digital fluidization velocity indicator displayed in standard ft/min
On/off switches for the heater
Main power on/off switches
Open/close switch to operate the product chamber release (air seal)
Automatic pulse filter cleaning and timer
Momentary push-button switch for manual pneumatic pulse for filter cleaning
(exhaust cartridge filters)
Inverter keypad for blower speed control
Emergency stop switch to cut off all control power, including the heater and
blower
Transformer to provide 120V power to all control panel instruments
Two (2) differential pressure gauges to measure:
J
I
K
Operating Parameters
System Requirements
 Fluidization velocity:
40 to 500 ft/min
 Inlet air temperature:
Ambient to 250 F
 Fluid-bed area:
0.44 ft2 (0.041 m2)
 Product bowl volume:
20 L





Dimensions: 6’ -6” H x 7’ -2” L x 2’ -4” W
Overall weight:
1000 lb
Electrical:
240V; 3 phase; 60 Hz; 60 amp
Compressed air:
3.5 cfm @ 90 psi
Venting:
3” diameter exhaust
 Slight Negative Pressure
Optional Equipment
Stainless steel upper section with two glass view ports
Air-atomized bottom or top spray nozzles with manual tip cleanout/shutoff
Automatic tip cleanout/shutoff spray nozzle
Compressed air heater for preheating atomization air
Sample thief for product bowl
Explosion proof design with solvent recovery
Wurster tube for bottom spray nozzle
Product temperature probe
A fluid bed is the industry technology of choice for drying, granulating and coating.
A fluid bed is an all-in-one system for drying, granulating, coating and cooling.
Key Components
Product Bowl: Constructed of 304 stainless steel with a fluidization plate, 9” ID, bolted at
the base. Depending on the product, the fluidization plate can be perforated, sintered, or
grid to provide sufficient fluidization
Exhauster: The fluidization velocity or airflow is controlled with a variable speed 240 V
exhauster motor. The exhauster is capable of providing 40 to 500 ft/min to the fluidizing
chamber while providing 40 inches WC of pressure drop across the system.
Air heater: An 18 kW electric duct heater adjusts the temperature of the inlet air stream
from ambient to a maximum of 250o F.
Dust Collection: The internal bag house, four standard polyester cartridge filters in the
upper section, removes the dust from the exhaust air. The filters are cleaned with an air
pulse system (manual or automatic).
Elevation Plan
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
Prefilter
Heater
Lower Plenum
Product Bowl
Upper Acrylic Plenum
Pleated Cartridge Filters
Upper Plenum
Air Control Panel
Blower Assembly
Control Panel
Carts
Bowl Pivot/Discharge Arm
H
G
A
F
B
Differential pressure across air distribution plate and bed, inches WC
Differential pressure across filter cartridges, inches WC
L
E
D
C
Instrumentation and Controls:
Air heater control: Controls temperature of fluidizing air from ambient to 250˚F
Temperature Indicators:
• Inlet Air
• Product
• Outlet Air
Air velocity: Digital fluidization velocity indicator displayed in standard ft/min
On/off switches for the heater
Main power on/off switches
Open/close switch to operate the product chamber release (air seal)
Automatic pulse filter cleaning and timer
Momentary push-button switch for manual pneumatic pulse for filter cleaning
(exhaust cartridge filters)
Inverter keypad for blower speed control
Emergency stop switch to cut off all control power, including the heater and
blower
Transformer to provide 120V power to all control panel instruments
Two (2) differential pressure gauges to measure:
J
I
K
Operating Parameters
System Requirements
 Fluidization velocity:
40 to 500 ft/min
 Inlet air temperature:
Ambient to 250 F
 Fluid-bed area:
0.44 ft2 (0.041 m2)
 Product bowl volume:
20 L





Dimensions: 6’ -6” H x 7’ -2” L x 2’ -4” W
Overall weight:
1000 lb
Electrical:
240V; 3 phase; 60 Hz; 60 amp
Compressed air:
3.5 cfm @ 90 psi
Venting:
3” diameter exhaust
 Slight Negative Pressure
Optional Equipment
Stainless steel upper section with two glass view ports
Air-atomized bottom or top spray nozzles with manual tip cleanout/shutoff
Automatic tip cleanout/shutoff spray nozzle
Compressed air heater for preheating atomization air
Sample thief for product bowl
Explosion proof design with solvent recovery
Wurster tube for bottom spray nozzle
Product temperature probe
A fluid bed is the industry technology of choice for drying, granulating and coating.
A fluid bed is an all-in-one system for drying, granulating, coating and cooling.
Range of Applications:
Drying—The fluid bed is an extremely efficient method for drying solids. The fluid bed gently and evenly
THE 300N FLUID-BED
dries each particle by pulling moisture from the surface. This is due to the excellent heat transfer which results
in reduced drying times.
Granulation/Agglomeration—Granulation or Agglomeration is the adhesion of small particles, such
as powders, into granules using a liquid binder. The binder is sprayed onto the fluidizing particulates thus
causing the small particles to adhere to one another and eventually forming larger granules. Often granulation
is followed by drying and possibly cooling. All these processes can be carried out in the fluid bed by simply
adjusting parameters.
Particle Coating—A coating is used to selectively influence the product characteristics and usually requires a very uniform application that results in an absolute seal without mechanical damage or tear. The fluid
bed’s gentle handling of the material and ability to apply a very even coating makes it ideal for coating processes.
Air Classification/Size Separation—The fluid bed can be used to separate particles of various sizes.
The ability to precisely control the amount of air flowing through the fluid bed allows the operator to efficiently separate the smaller particles from the larger particles.
Top Spray Application Uses:
Granulation/Agglomeration
Coating
1. Reduction in the amount of fines
1. Lipid coating
2. Improvement in the flow ability
2. Taste masking
3. Elimination of segregation
3. Moisture and oxidation-protection coatings
4. Homogenous distribution of all components
4. Enteric coatings
5. Improved compressibility for tableting
5. Visual appearance
COAT
DRY
AGGLOMERATE
AIR CLASSIFICATION
The 300N is a multi-purpose fluid bed designed specifically for small to intermediate scale
spray coating, granulation and drying of particulates and powders. The 300N batch sizes range
from 5L to 20L. The 300N provides maximum efficiency for drying and granulating.
The drying/granulating/coating process is easily monitored through the transparent upper plenum. The system is ideal for process development, collecting scale-up data for commercial
processes and for small quantity production.
The 300N is equipped with a pivoting product bowl for easy discharge of the processed product. The design of the pivoting product bowl makes emptying the bowl quick and easy and
eliminates strain on the operator.
6. Controllable bulk density
7. Optimized solubility
Bottom Spray Application Uses:
Coating
1. Aqueous or organic based coatings (organic requires explosion
proof design)
300N Fluid Bed
2. Polymer solutions or dispersions
3. Controlled release
4. Enteric coating
The 300N is not rated for use with organics. ACT offers batch and continuous fluid bed systems rated for
use with organics.
5. Coating of very fine particles
6. Active ingredient layering
300N Fluid Bed
Bowl Extended