Granulate drying with the continuous Fluidised Bed Dryer BCD

In order to seamlessly connect to Continuous Wet Granulation, constant and continuous drying must be guaranteed. With the continuous Fluidised Bed Dryer BCD, L.B. Bohle now enables continuous drying of granulates for the first time. Until now, there have only been dryers on the market that did not fulfil the requirement of continuous drying; they only formed sub-batches. In the BCD, however, L.B. Bohle realises a truly continuous process without interruptions. The results from the laboratory scale are also easily scalable to production scale.

Continuously produced moist granules fall gravimetrically into the dryer without any further necessary transport steps and are then dried in a continuous process. The constant conveying of the moist granules from the inlet to the outlet of the dryer is achieved by a controllable movement. This ensures gentle and very uniform drying. The movement is so gentle that it results in almost no back-mixing and all granulates (even of different sizes) are dried for the same length of time. Innovative product filters guarantee a service life of days without having to interrupt the continuous granulation process. As a result, there is no loss of quality, even with the finest micronised drugs.

The Fluidised Bed Dryer BCD is the ideal tool for the continuous production of high-quality products on a laboratory and production scale. The implementation of Process Analytical Technology (PAT) - for example for constant in-line determination of the granulate moisture and for feedback control of the process - also ensures process and product quality.

The BCD can be used within the ^QbCon® 1 laboratory machine for throughputs of 0.25-2.5 kg/h or for production sizes of 25 kg/h. It is available in different sizes to make production more efficient and of higher quality.

Advantages of the continuous Fluidised Bed Dryer BCD:

1. Fully continuous drying for the first time, without the formation of sub-batches
2. Simple design and convenient operation
3. Very long service life of the product filters without the need to interrupt the process
4. PAT probes only in contact with dry product - no unwanted product build-up
5. Very short average residence times and narrow residence time distributions
6. Small in-process volume
7. Selective discharge of "bad product" possible
8. Four degrees of freedom to control the drying process
9. Uniform drying across all Particle Sizes
10. Gentle drying process: No formation of fines in the process, even for highly porous granulates
11. Extremely fast execution of test plans with minimal product expenditure for rapid product development

To the product page