Drying Flashcards

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1
Q

Drying

A

Transfer of liquid from a wet solid into an unsaturated gas phase

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2
Q

Tray Dryers

A

*Batch dryer
*Smallest capacity for lab purposes

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3
Q

Freeze Dryers

A

*Lyophilization
*Heat sensitive
*Low P = Moisture is frozen then sublimates

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4
Q

Conveyor and Tunnel Dryers

A

Used to dry sheets

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5
Q

Particulate Dryers

A

Rotary Dryer
Plate Dryer
Flash Dryer

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6
Q

Spray Dryers

A

To produce fine powders for dilute solutions, slurries, gel, or emulsions

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7
Q

Used to dry pastes and slurries

A

Rotary Vacuum Dryer
Drum Dryer

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8
Q

Tower Dryer

A

*Palay, wheat, grains
*Wet feed in top falls while in contact with hot air

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9
Q

A slurry is to be dried to produce flaky solid. Which dryer would you recommend ?

A

Spray dryer

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10
Q

Centrifugal Dryer

A

*Water more dense than porous solids
*Salt, Sugar, Fertilizer

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11
Q

Large scale drying of wheat is done in a __________ dryer.

A

spouted bed

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12
Q

Large scale drying of sugar is done in a __________ dryer.

A

rotary

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