Drying Test Quiz and Flashcards

Questions and Answers

Filtration

Crystallization

Evaporation

Drying (correct)

The process of converting liquids into dry powders

The reduction in moisture content from an initial value to some acceptable final value (correct)

The addition of moisture to a material

The stabilization of moisture-sensitive materials

To stabilize moisture-sensitive materials

To remove water from the material completely

To convert liquids into dry powders

To improve handling characteristics (correct)

Batch dryers, continuous dryers, and both batch and continuous dryers Signup and view all the answers

To convert liquids and pastes into dry powders, flakes, or sheets Signup and view all the answers

To remove water or other liquid from a substance Signup and view all the answers

Drum dryers Signup and view all the answers

Drying Signup and view all the answers

To improve handling characteristics and convert viscous liquids and pastes into dry powders, flakes, or sheets Signup and view all the answers

Both batch and continuous dryers and drum dryers Signup and view all the answers

Study Notes

Drying refers to the final removal of water or other liquid
Drying means the reduction in moisture content from an initial value to some acceptable final value

Drying is carried out in some operations to achieve two main objectives:
- To preserve the material by preventing spoilage or decay
- To make the material more convenient for storage, transportation, or further processing

Drying equipment can be classified into three categories based on their method of use:
- Direct heat transfer equipment
- Indirect heat transfer equipment
- Specialized drying equipment

A drum dryer is a type of drying equipment that consists of a single heated drum supported on rollers
The purpose of a drum dryer is to dry materials such as liquids, slurries, or solids by spreading them onto the heated drum surface

Drying equipment can be used in two main ways:
- Continuously, where the material is fed continuously into the drying equipment
- Batch-wise, where a fixed amount of material is loaded into the drying equipment and dried in a single cycle