Question

For drying of heat sensitive materials, this particular type of dryer is used

• A. Tray dryer
• B. Vacuum dryer
• C. Tunnel dryer
• D. Drum dryer

Hint:

When working with heat-sensitive materials, opt for vacuum drying as it minimizes thermal damage by reducing the drying temperature.

Answer 1

The Correct Option is B

Step 1: Understanding the need for a specific dryer.
Heat-sensitive materials require a drying process that minimizes exposure to high temperatures. Vacuum dryers are commonly used for this purpose because they operate under reduced pressure, lowering the boiling point of solvents and thus preventing thermal degradation.
Step 2: Analyzing the options.
(A) Tray dryer: While tray dryers are commonly used, they expose materials to higher temperatures, making them unsuitable for heat-sensitive materials.
(B) Vacuum dryer: Correct — Vacuum dryers reduce the temperature required for drying by creating a vacuum, making them ideal for heat-sensitive materials.
(C) Tunnel dryer: This dryer uses continuous flow of air and may not be appropriate for materials sensitive to heat.
(D) Drum dryer: Drum dryers involve direct heat transfer and are not ideal for heat-sensitive materials.
Step 3: Conclusion.
The correct answer is (B) Vacuum dryer as it is specifically designed for drying heat-sensitive materials.