Conical Vacuum Dryer

The Conical Vacuum Dryer is ideal for batch drying of solids (in the pharmaceutical and chemical industries) with near 100% discharge.

The process the Conical Vacuum Dryer uses is an improvement from tray or pan dryers. No horizontal surfaces means easier cleaning, easier discharge, and no cross-contamination. It is a vertical conical machine with a helical agitator. This geometry is highly effective for drying and discharging processes.

Typical Applications

API production
Fine chemicals
Dietary supplements/fragrances

Highlights

Suitable for multi-product or mono-product applications in batch processes
Gently dries products while obtaining a very low final moisture content
Dead areas minimized
cGMP, cGMP sterile, and EHEDG designs
The machine moves the cake at variable speeds during the drying phase, which improves drying time
Minimizes lump generation
Option for sterile area
The dryer vessel has a conical shape and a torispherical head (flanged and dished head)
The helical agitator
- can rotate in a clockwise or counterclockwise motion
- gently moves the product up the vessel’s sidewall from the bottom and then back down the center shaft area
- ensures even product distribution and mixing during the drying cycle
- mixes the product, providing heat and avoiding lump generation
The heating system, installed on all machine surfaces including the agitator, provides high heat transfer coefficients
The product discharge is located at the bottom of the vertex
During discharge, the agitator pushes the crystals to the discharge nozzle

Discharge

The product discharge is located at the bottom of the vertex
During discharge, the agitator pushes the crystals to the discharge nozzle
Automatic discharge of the product through the bottom valve, minimizing the product that remains inside the body
The discharge valve, depending on the product, can use different technologies:
- Butterfly valves for applications requiring robustness and effectiveness
- Segmented ball for high vacuum cleanability levels

Control Options

Hydraulic power pack
Electrical panel
Sample port Instrumentation
Control system with PLC
Local operator interface

Machine Characteristics

The conical body is certified as a pressure vessel
Totally customized design available
The unit is equipped with an integral cartridge filter on the vacuum line
The cartridge filter is a special sintered metal design
The filter has been engineered to be efficient, to provide easy access for inspection, and for optimal powder recovery
The cartridge filter assembly is also heated to avoid condensation build-up
Contact material: AISI316L, AISI904L, C-22, C-276, coated with elastomers
Surface finishing: From pickled and passivated to mirror polished
Sealing system: From stuffing box to lift-off mechanical seal
Certification: PED, ASME, HP0, Selo, ATEX
Construction Materials: Austenitic stainless steel, nickel-based alloys, 904L, duplex stainless steel, and other materials upon request

Custom Options

CIP system: For washing between batches, which uses rotating spray balls and sprayers on critical areas of the discharge valve
SIP system: Blows steam inside the machine body and checks cold area temperatures for sterilizing grade control
Sanitary insulation: Which is mandatory for applications where cleanliness is important, like in white chambers (clean rooms)
Sampling device: For retrieving a product sample and checking the production status
Additional delumper: For products that tend to form lumps
Dust filter on the top head: For product containment while avoiding vacuum pump contamination
Bayonet closure system between body and top head: For easy maintenance management
External vacuum system coupled with an integrated heating system: For global production line management
Options for high-containment devices: For high-potency products, with a glove box at the discharge nozzle or at the sampling port

Standard Sizes and Technical Data

Keep in mind that we can customize our machines for all of your drying needs

Model	Internal Diameter (mm)	Nominal Capacity (l)
DCHD 15	950	150
DCHD 30	1,200	300
DCHD 60	1,400	600
DCHD 150	1,900	1,500
DCHD 200	2,100	2,000
DCHD 300	2,400	3,000

Other dimensions available upon request