A fluid bed dryer uses gas or heated air to dry products, with different zones for heating and cooling. The equipment includes a large processing chamber with a perforated plate and a recycling system for greater efficiency. It can be used for granulating or pelletizing materials, and lease or rental options may be available.
A fluid bed dryer uses gas or heated air to dry certain products. The equipment effectively forces products to behave as a fluid as they move through the machine from the feed inlet to an outlet that discharges the dried and finished products. Different zones can allow for heating and cooling as needed, with each zone being controlled by the operator. Manufacturers may use a fluid bed dryer for a task like powder preparation, where the device dries and separates the energy before finally cooling it so it can be packaged.
The equipment includes a large processing chamber with a perforated plate through which heated air or gases can pass. When the products are placed in, they float on the gas, receiving maximum surface contact with the heat so they dry quickly and evenly. Some machines also have heating rods to raise the temperature and speed up the process even more. The materials in the fluidized bed dryer behave almost like a boiling liquid, bubbling along the length of the chamber until they reach the opposite side, where they can be discharged.
For greater efficiency, many devices use a recycling system. This brings the heated gas or air back around, where it can be filtered and reused to reduce operating costs. Heated bed dryers can also be controlled with a variety of temperature and pressure settings to handle different products. The heated gas can be more or less dense, for example, to compensate for particles of different weights, allowing them to float rather than sink to the bottom. Vibration can be added for stubborn materials.
These devices allow companies to granulate or pelletize materials, such as powdered milk and other processed foods, along with pharmaceuticals and coatings for industrial products. The equipment is usually designed for a specific family of applications, and in the case of a fluid bed dryer for food processing, the device may have a self-cleaning function. Food products, especially animal products such as milk, can tend to stick to process equipment, creating a risk of contamination and clogging. Self-cleaning breaks down sticky proteins to keep your equipment tidy.
Lease or rental options may be available to allow a business to use a fluidized bed dryer on a short-term basis. This can be useful for limited production runs or for businesses that want the ability to try products before committing to a purchase. Used equipment can reduce costs for companies looking to purchase a fluid bed dryer, while manufacturers can produce custom machines for specific applications that may not be met by existing product lines.
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