May 30, 2020

fluidised bed dryer. 1. FLUIDIZED BED SYSTEMS; 2. CONCEPT OF FLUIDIZATION: Principle of Fluidization: The principle of operation of. Fluid Beds from Imtech Ventilex are guaranteed to be gentler on product and mare energy efficient than any other in industry. Learn what features look for when purchasing a fluid bed dryer. Additionally, discover the many uses of fluid bed dryers and what industries.

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But before, I explore the details about this; you need to know the working principle of fluid bed dryer. Ventilex systems energy efficiency results in l ower operating costs for your process, while our simple drive, high quality materials, and minimal dust or fines formation l ower maintenance costs and increase yieldsas well. The vaporised liquid is carried away by the drying gasses. Our results indicate that if drying is carried out in a slow drying fryer, where capillary flow is faster than fluidieed, drying is dominated by the constant rate stage and the impact of particle size on drying is not signifi cant.

We have incorporated various automatic control systems that make the machine to adjust seamlessly to any change in operating conditions. Very high heat and mass transfer rates are obtained as a result of the intimate contact between individual particles and the fluidizing gas.

Advantages & Disadvantages of Fluid Bed Dryer in Pharmaceutical Industry – SaintyTec

The constant rate stage corresponds to a constant bed temperature. This is due to the many advantages that it offers over the conventional drying techniques.

Once all the water is removed from the materials, a plateau can be observed fouidised the bed temperature indicating that the system reaches an equilibrium state.

During the constant drying rate stage, the water content in the bed linearly decreases with time indicating a zero order kinetics see Figures 3a and 4a. Knowing that no two applications are exactly alike, we take an engineered and systems approach for each installation. Additionally, you can choose the right capacity of the fluid dryer where there is an excellent mixing of both the particles and air.


Fluidized Bed Drying of Pharmaceutical Materials: Moisture Measurement and Effects of Particle Size

Therefore the results for fine particles are not shown in this article. Bubbles form and collapse within the fluid bed of material promoting intense particle movement.

It is for this reason that we may advise you to consider other alternatives. If the active pharmaceutical ingredient has a low melting point, controlling the drying process becomes more critical due to the sensitivity of the formulation to the temperature and the risk of compromising product quality and performance during drying.

Ideally, these are the main challenges you may face when intending to use this equipment. This indicates that if drying is dominated by the constant rate stage, the impact of powder size on drying is not significant.

This makes handling these machines easy and less labor intensive.

This causes the particles to be suspended in the hot air or gas. It is important to note that the profiles of the moisture content and the bed temperature were quite similar for large particles, moderate particles and mixtures. This is quite clear from the modular and cGMP compliant designs of our fluid bed dryers for pharmaceutical machines. Plus, get special offers and more delivered to your inbox.

This indicates that the NIR method can be used to accurately measure the product moisture content and to determine the end point of the drying process. With fluidized bed drying, it must be ensured that drying always takes place in a thermodynamic fliidised.

In the pharmaceutical industry, this innovative method has replaced the time-consuming tray drying long ago: The technology is also suitable fluidisev post-drying of spray granulated or extruded products with very low residual moisture.

Fluidized bed drying

Furthermore, the uniform drying is due to the fact that every particle of the solid is surrounded by hot air or gas. However, it is important that you choose a suitable machine that matches the exact requirements of your applications. Ventilex takes pride in matching our design to your fluid bed dryer needs, which results in cost savings for you. The drying process for fine particles was also examined in this work.


Muzzio directs research involving the U. It should be noted also that not all modified flkidised bed dryers are necessarily better than the conventional dryers in terms of product quality, or energy efficiency, or drug performance.

In order to improve operation, efficiency, and reproducibility of a fluidized bed dryer, some parameters need to be controlled. Below are the main advantages of fluidized bed dryers in the pharmaceutical industry:.

These parameters are categorized into:. If the inlet air temperature is hed high, a surface crust will most likely form fluidissed will hamper or even prevent the moisture being transported from deeper bbed to the outside. However during drying, the holes in the bed distributer were easily clogged by fine particles causing an unstable fluidization state. In this article, I am going to explore all the advantages and disadvantages of fluid bed dryer.

Fluid Bed Dryer (Static)

FDA and more than 40 global companies. The design of the distributor plate ensures that the fluidizing gas is evenly distributed across the area of the bed.

The equipment is made from high quality stainless steel. Fluid bed dryer plays an integral role in the pharmaceutical industry.

Remember, the hot air or gas surrounds all particles and this ensures efficiency in the material drying process. In a slow drying regime, where capillary flow is faster than evaporation, water evaporation mainly occurs at the powder surface and the drying process is mainly ddryer by the constant rate stage.

Moisture measurements during the drying process. Notify me of follow-up comments fluifised email. Fluidiswd modern fluidized bed designs have sensitive and effective sensors that monitor all essential parameters during material drying process. The moisture content in the product during drying was measured using two approaches: The inlet air temperature must be selected such that only so much moisture evaporates from the surface of the granulate as is transported through the capillaries from the interior of the granulate to the surface.