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Continuous fluidized bed drying of
granules for the pharmaceutical industry

Continuous Fluidized Bed Dryer – BCD

Constant and continuous drying must be ensured in order to seamlessly connect to continuous wet granulation. To date, there have been dryers available on the market which did not meet the demands to continuous drying, and that only formed sub-batches.

With the continuous BCD fluidized bed dryer, L.B. Bohle enables continuous drying of granules for the first time. The results from the lab scale can be easily scaled to production scale for the pharmaceutical industry.

Continuous Fluidized Bed Dryer BCD


Granule drying with the L.B. Bohle
continuous fluidized bed dryer

Continuously produced wet granules drop into the dryer gravimetrically and without further transport steps, to be dried in a continuous process. The constant conveying of the wet granules from the inlet towards the outlet of the dryer is achieved by a controllable movement. This ensures gentle and very uniform drying. The movement introduced is so gentle that almost no re-blending results and all granules (even those of different sizes) are dried for the same length of time.

Innovative product filters ensure service lives of days without the need to interrupt continuous granulation. As a result, there is no loss of quality, even with finely micronized drugs.

Process Analytical Technology
The possibility of using PAT makes this innovative fluidized bed dryer perfect for continuous manufacturing of high-quality products in lab and production scales. For example, PAT can be used for continuous in-line determination of the granule moisture and for feedback control of the process.

Within the QbCon® 1 laboratory machine for throughputs of 0.25-2.5 kg/h or for production sizes of 25 kg/h and higher, the BCD is available in different sizes to make your production more efficient and of higher quality.


Benefits of the continuous fluidized bed dryers

First presentation of fully continuous drying, without formation of sub-batches
Easy setup and comfortable operation
Very long service life of the product filters – no process interruption
PAT-probes only in contact with dry product – no undesired product adhesion
Very short residence times and narrow residence time distributions
Low process volume
Rapid product development: Extremely fast execution of experimental designs with minimum product effort
Selective ejection of poor product possible
Four degrees of freedom to control the drying process
Uniform drying across all particle sizes
Smooth drying process: No fines formation in the process, even for highly porous granules




Your contact for Bohle
Continuous Fluidized Bed Dryers

Burkhard Schmidt

Sales Director
+49 2524 – 93 23 0

Burkhard Schmidt, L.B. Bohle


Potential subjects of interest

Maschines and Processes by L.B. Bohle

Machines & Processes

Product efficiency increase is the central benefit of L.B. Bohle. To this end, we offer both complete production plants and solutions for individual production steps.

Our product portfolio

L.B. Bohle: Free Whitepaper and Product brochures

Free Whitepaper & Product brochures

Learn more about our innovative machine technologies and processes and convince yourself of the advantages for pharmaceutical production with the help of our white papers and product brochures.

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Learn more about Continuous Manufacturing at www.continuous-manufacturing.com


We look forward to hearing from you!

+49 (0) 25 24 93 23-0

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