The drying process involves applying heat to a substance to drive out even trace quantities of water or other liquids. Compared to alternative liquid removal techniques, including filter press or centrifuge, drying is not a cost-effective or efficient industrial operation. Liquid removal costs are minimized when mechanical rather than heat techniques are used. Drying trays are stored in a standard insulated chamber made of perforated material and stacked on a trolley. Drying is a crucial step in many industrial processes. Businesses like the food and pharmaceutical sectors rely heavily on tray dryer to perform the job efficiently on a massive scale.
Principle of Industrial Tray Dryer
Hot air is constantly blown through the trays’ perforations to dry materials in a tray drier, either from electric heaters or steam in radiator coils. Drying out moisture from solids on trays requires forced convection heating. At the same time, a portion of the water in the air is eliminated. Blower fans or even suction devices are set up inside to ensure the air moves and the heat is transferred effectively.
The Construction of a Tray Dryer
An industrial tray dryer is a rectangular chamber made of a durable angle iron frame lined with double-walled panels insulating with high-quality compressed fiberglass and equipped with sturdy hinges and a reliable locking mechanism. The heating chamber is used to hold trays. The number of trays might change depending on the dryer’s capacity and the client’s needs. In general, dryers for use in laboratories should have no more than three trays, whereas those used in factories should have at least 25.
Each tray is either rectangular or square, and the standard depth for loading is between 10 and 100 mm. The distance between the bottom of the upper tray and the top of the material in the tray below must be at least 35 millimeters. The trays might also be on wheeled trucks and transported in and out of the chamber for convenience. The dryer space is large enough to provide parking spots for two such vehicles. The trays within the dryer can get airflow thanks to the appliance’s built-in fan.
Electrically heated components heat internal air. Some dryer types use steam as a heating source, with steam being accelerated within the dryer’s double-jacketed chamber. This is owing to steam’s low production cost, high efficiency, and ease of use. Direction vanes are positioned at the chamber’s corners to guide the airflow in the desired direction.
The Benefits of a Tray Dryer
Working with a tray dryer is easy since it can be cleaned quickly and easily.
Controlling operating parameters is simplified and improved.
Each batch is processed independently for easier management. Batch-wise drying is widely employed in the pharmaceutical business.
The drying capacities of similar-sized tray dryers may be easily modified to accommodate a broad range of materials.
Effective management of high-value items is possible.
Materials loaded into and removed from tray dryers may be handled precisely, preventing waste and spillage.
These dryers are employed when drying materials with a high moisture content because they can reliably maintain low temperatures for lengthy periods.
These are used in laboratories that do quality control to dry-washed glassware in regulated environments.
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