The pharmaceutical industry makes considerable use of fluid bed dryer to lower the moisture content of raw materials like powder and granules. The fluidization of the materials being fed into the apparatus is part of its operation. Through a perforated bed of moist solid particles, hot air at a high temperature and pressure is injected into the system in this procedure. The solids are raised from the bottom and suspended in a stream of air while they are slightly damp (fluidized state). Once the moist solid and hot gases come into close contact, heat transmission starts to happen. The liquid is removed by the dry gas. Sometimes, the gas that is leaving gets recycled in part.

Working Principle of Fluid Bed Dryer:

A bowl-shaped stainless steel chamber with a removable, frequently perforated bottom makes up a fluid bed dryer. The air is introduced through this perforated bottom, and with the aid of heaters, the temperature of the air inside is raised. After filtering, the hot air is allowed to travel through the material bed. The system has a slot for the connection of a fan. The fan starts the air flow and keeps an eye on it. The machine’s operating temperature and air flow can both be adjusted.

With the expansion of the Fluid Bed Dryer bag due to airflow, powder particles begin to move turbulently. Due to constant exposure to dry air, the material becomes dry within. The material that now leaves the system is filtered once more.

  • Fluid Bed Dryer (FBD) - Introdusction & Comprehensive Guide

Materials are processed using a wet-bulb temperature after they have dried at a consistent rate. This technique makes sure that the materials are dried under relatively low temperatures to low moisture content. Installing heat-exchanging panels or tubes, which account for 80% of the heat exchange process, will result in high drying results. The Fluidised Bed Dryer only needs a little amount of gas because it has a sizable heat exchange area. The sizes of each piece of system equipment employed in the system are minimised to investigate this problem.

Where is Fluidised Bed Dryer Used ?

Pharmaceutical production processes that involve granulation frequently employ fluidized bed dryers. Granulation is a method of drying the material to achieve the necessary moisture content for the production of properly compacted medication pellets.

The material dries quickly since the Fluid Bed Dryer has a high drying rate. Due to this characteristic, the machine excels in producing a high output.

The usage of a fluid bed dryer has been made to produce artificial resins. Agrochemicals, ceramics, food, fertilisers, and other products can all use this machine. A machine type known as B-FBD is appropriate for the material that needs to be dried in the decreasing-rate drying zone.

The Concluding Line:

With a ten-year history and its headquarters in Ahmedabad, Adinath International has been providing automated and semi-automated machines that assist pharmaceutical companies in achieving their targeted output. The business provides a full selection of packaging equipment from domestic and international pharmaceutical businesses.