Pharmaceutical high efficiency fluidized bed dryer machine

1. General description of High Efficiency Fluid Bed Dryer

GFG series high efficiency Fluidized Bed Dryer is a batch type drying machine which has been widely used in foodstuff, chemical, feedstuff, health products industry and so on for drying powder and granule materials.

2. Work principle of High efficiency fluid bed dryer

The main body structure consists of bottom bowl, movable product bowl with trolley , fluidized chamber, expansion chamber (filter housing). The bottom bowl, product container and fluidized chamber are inflatable silicon gasket sealed with compress air to assure the reliable sealing. The air passes through the primary filter(G4), medium efficiency filter (F8), high efficiency filter (H13 -optional) and heater with accurate temperature control. The inlet air flow, speed and pressure is variable and controllable. And then the purified and heated air is sucked from the bottom of machine by the exhaust fan and passed through the screen plate of raw material tank into the work chamber, the state of fluidization is formed through stirring and negative pressure. The moisture of the materials will evaporate and removed rapidly out from the exhaust pipe and the raw material is dried quickly.

3. Features of High efficiency fluid bed dryer

1. The state of fluidization to achieve fast heat transmission .
2. Seal negative pressure operation, there is no dust.
3.Using the anti-static filter, it is safe in operation;
4.The equipment has no dead corner so it is easy to clean and there is no cross pollution;
5.It is in conformity with the requirements of GMP.
6. Machine materials : AISISUS304 , AISISUS316L, and other material .
7. For the electrical component  , we mainly use international brand such as ABB ,Siemens or Schneider.
8. Control system has more choices, such as push button , HMI+PLC and so on.                                      
9.  Exhaust Fan speed is controlled by VFD (Optional).

4. Structure of High efficiency Fluid bed dryer

High efficiency fluidized bed dryer consists of air filter, heating, inlet air pipe, air distribution chamber, fluid bed, dust remove chamber, exhaust air pipe, exhaust fan, silencer and control cabinet.

5.1. Air filter of high efficiency fluid bed dryer:

Filter includes primary, middle and high efficient filter (HEPA filter). It can make sure the purification achieves 100000 degrees. And there is a meter that can show the pressure differential before and after the high efficient filter, so we can know the resistance in time.

5.2. Heating system of high efficiency fluid bed dryer:

In general, the heating source is steam, thermal oil, electricity, hot water, oil, gas and so on. The heating system uses PID technology to ensure that the temperature fluctuation range is controlled within ±2℃. To ensure dried material is cooled timely, a cooling system is optional to achieve online cooling function.

5.3. Main machine of high efficiency fluid bed dryer:

5.3.1. The bag dust collector can remove dust continuously when the dryer is working. We can set dust remove time and interval time, so the dust removing efficiency and fluidized efficiency is good. The bag is static-free type, the static electricity appears during the drying process can be eliminated, so the material is not to stick on the bag. There is differential pressure display device for the bag, so we can clean or replace the bag in time.

5.3.2. The equipment is round sealed structure, there is no dead angle. So it is convenient to clean the machine and there is no cross contamination, and confirms GMP requirements.

5.3.2. The air distributing plate is special designed, air is well-distributed, material fluidized efficiency is good. Perforated plate is quick-install type, it is convenient to clean and maintain.

5.3.3. Adopts air cylinder type sealing and air bag sealing structure, seal is stable and operation is easy.

5.4. Exhaust air system of high efficiency fluid bed dryer:

It consists of exhaust air pipe, exhaust fan and silencer. Exhaust fan and main machine are installed separately, and the noise is ≤75dB. The rotary speed of exhaust fan is regulated by inverter, so it is convenient to adjust the air volume for different materials.

5.5. Control system of high efficiency fluid bed dryer:

Control system is PLC & Touch screen type, operation is convenient and stable. There is strict interlock function, so there will be no incorrect operation. There are temperature and pressure measure and display devices, inlet air temperature is controlled by PID control technology.

6. Parameters of High efficiency fluid bed dryer