What is the function of fluid bed dryer?
Fluid bed dryers, as their name suggests, are used for drying materials such as granules, tablets, powders, fertilizers, and plastics. They are particularly popular in production industries like: Chemical.
What is fluidized air?
Fluidization is defined as a method to keep solid particles floating in an upward direction (Figure 5) in a flow of gas or liquid. By utilizing low-temperature air to achieve fluidization, the product is simultaneously frozen and conveyed by the same air without the aid of a mechanical belt.
What is bed dryers?
Fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. Heat transfer is accomplished by direct contact between the wet solid and hot gases.
What is a fluidized bed heat exchanger?
A fluidized bed heat exchanger is provided in which air is passed through a bed of particulate material containing fuel. A steam-water natural circulation system is provided for heat exchange and the housing of the heat exchanger has a water-wall type construction.
What do you mean by fluidized bed?
Definition of fluidized bed : a bed of small solid particles (as in a coal burning furnace) suspended and kept in motion by an upward flow of a fluid (such as a gas) — called also fluid bed.
What is fluid bed equipment?
Fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. The equipment works on a principle of fluidization of the feed materials.
What is the principle of a fluidized bed dryer?
Principle of the Fluidized Bed Dryer A vibratory conveyor is leading the tobacco in an even layer through two drying zones. The process air coming from the perforated bottom of the trough creates a homogeneous fluidized carpet. In HEINEN KÖHL standard process air will be conditioned in energy units following the closed loop principle.
What is the ahu in a fluid bed dryer?
Fluid Bed Dryer: Inlet Air Handling Unit (AHU) Function: “Supplying fresh, filtered, and heated air required for fluidizing & drying solid particles.” The AHU resembles a rectangular container. One end serves as the fresh air inlet.
What are the parameters of a bed dryer?
In order to improve operation, efficiency, and reproducibility of a fluidized bed dryer, some parameters need to be controlled. These parameters are categorized into: Apparatus parameters: Those controlled by the equipment. Process parameters: Those controlled by the process.
What causes a fluid bed dryer to discharge?
By doing so, the system will discharge powder or granules. This FBD has a discharge gate on one side of the dryer system. Of course, it is due to the whirling of gas via the perforated plate (it acts as a gas dispersion plate). It is this gas that pushes dried material from the discharge gate.