Efficient batch drying of everything from loose powders to heavy pastes and viscous liquids
Multi-purpose and multi-processing Conical Paddle Dryer
Compact design and extremely fast drying
Full compliance with international standards such as FDA, cGMP, EHEDG
Automated cleaning with our patented CIP solutions possible
Sterile processing (SIP) possible
Available in batch volumes from 5 to 15,000 litres
Multi-Purpose Vacuum Dryer
The Conical Paddle Dryer (CPD) is a universal vacuum dryer, designed for mixing, drying and reaction processes. The unique paddle design of the vertical, centrally driven dryer combines extremely fast drying rates with a compact design.
The Conical Paddle Dryer is a multi-purpose batch dryer, designed to enable vacuum, atmospheric and pressurized processing of a wide range of materials such as powders, granules and filter cakes, especially when they are brittle and/or heat sensitive.
Principle of Operation
The Conical Paddle Dryer consists of a conical shaped process vessel, equipped with a central paddle rotor. When it rotates, the rotor creates a combination of vertical and axial motion in the vessel. The paddles guide the product gently to the surface of the batch, where it is dispersed and the gravitational pull at the centre of the dryer forces the product back down to create continuous motion throughout the drying cycle, even at low speed.
The thermal energy required for the drying process is transferred to the product via a heated jacket, which can be heated by various media such as steam, hot oil and water. The jacket ensures rapid distribution of heat into the product in combination with efficient mixing.
The vacuum inside the Conical Paddle Dryer allows vapour to be removed at low temperatures, which makes the Conical Paddle Dryer ideal for drying heat-sensitive products. The vapours are removed through a dust filter fitted on top of the vessel. This prevents the dust from entering the vacuum system.
The Conical Paddle Dryer is equipped with a condenser with a solvent recovery tank. This condenser can be installed before or after the vacuum pump, depending on the properties of the solvents.
The moisture content of the product can be controlled by monitoring the weight of the condensate or by using the Hosokawa Sampler to take samples from the product inside the dryer under vacuum.
Applications
The Conical Paddle Dryer is designed for vacuum drying solid based materials, but can be used in a wide range of other process applications requiring thermal processing or vacuum treatment of solids, including:
Mixing / Drying under vacuum
Alkalization, polymerization, solid-gas reactions
Cooling of solids and liquids
Crystallization
Sterilization and pasteurization
Thermal processing
Wet agglomeration and granulation of solids
This combination of several processes in one vessel offers tremendous savings on investment costs, labour, and space.
Models
The conical paddle dryer (CPD) is available in several sizes. A few sizes with their typical characteristics are described below. Please note that these values are indicative only. Detailed information is available on request.
Volume
[l]
5
50
500
1000
2000
3000 - 15,000
Vessel diameter
[mm]
300
650
1400
1840
2250
on request
Outlet diameter
[mm]
80
150
300
350
400
on request
Height incl. motor
[mm]
280
713
1178
2657
3125
on request
Typical motor power
[kW]
0.5 - 1
1 - 4
4 - 20
10 - 40
30 - 80
on request
Laboratory & Pilot vacuum dryers
Our laboratory & pilot vacuum dryers are small vacuum drying systems that have been specially developed for use in laboratories. They are multi-purpose systems for wide-ranging applications.
The complete systems, including all of the necessary ancillaries, are built on stainless steel skids with wheels. They are very suitable for process development activities, experimental purposes and for fine-tuning for optimal process parameters. The laboratory dryers are available from 5 litres to 20 litres and the pilot dryers from 40 to 120 litres.
Standard industrial dryers
Our industrial dryers are designed and built according to industry standards such as Stoomwezen, PED, TÜV, Lloyd’s, ASME, Afnor, ISPLE etc. and are available in all grades of stainless steel, Hastelloy, etc.
Bespoke systems
Our expert design and engineering team would happily work with you on a tailor-made design for any of our dryers or drying systems.
Options
Our expert design and engineering team would happily help you specify the right ancillary equipment to compliment the conical paddle dryer. These ancillaries may include:
Vacuum filter
Sampler
Heating / cooling skid
Ball segment outlet valve
Controls
CIP / SIP skid
Load cells
Temperature probe
Product level probe
Sight glass
Batch Drying Systems
As a global developer, manufacturer and 'one-stop shop' supplier of powder processing systems and plants, Hosokawa Micron provides a wide range of both batch and continuous drying technologies. We carefully select, configure and integrate all components and processes in order to ensure the optimal functionality, quality and efficiency of your drying system.
Thanks to our long-standing experience, we are the ideal partner to transform your drying operation into a bespoke powder processing system, from incoming base ingredients to final products.
Drying is responsible for more than 15% of energy consumption in modern industrial processes. This makes energy efficiency an important factor when designing a vacuum drying system. Hosokawa Micron is an expert in developing advanced solids processing systems, and we put a lot of our own energy into developing vacuum drying systems that will save you energy!
Testing & Process Development
Our Test and Process Development Centre in the Netherlands offers unique possibilities for testing your product to determine the most efficient process, system or plant prior to final design. We can provide laboratory-level as well as production-sized trials. Whether you wish to test a single machine or a complete powder processing system, the same skilled and experienced staff are here to help ensure that you are entirely satisfied with the results.
We offer process equipment and technologies from individual units to large scale bespoke system solutions. Our principle is to deliver high performance yet affordable solutions that meet our customers' demands and long term challenges. We also have rental equipment available for batch drying.
Talk to Our Experts
Let our process specialists help you develop the optimal solution for your powder and bulk solids processing – from the first trial in our test centre to a full-scale industrial production system.
Hosokawa Micron B.V. is committed to sustainable and responsible process technology. Our ISO 14001 certification covers key environmental aspects such as air, soil, energy, waste, water, noise and hazardous substances. With an EcoVadis Silver Medal, we rank among the top 15% of EcoVadis-rated companies in the special machinery industry.
