Technology-2 Quiz 2

Which of the following devices is suitable with liquids that are too viscous to be processed in units in which the film is formed naturally?

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• Climbing film evaporator

• Lillie film evaporator

• Wiped film evaporator

• Horizontal film evaporator

Which of the following evaporators is (are) suitable for the evaporation of viscous liquids?

• Climbing film evaporator

• Falling film evaporator

• Flash evaporator

• Horizontal tube evaporator

1. One of the drawbacks of the Climbing film evaporator is the difficulty of cleaning and maintaining, since replacement of the tubes requires a headroom clearance of further 7 meters.​

• True

• False

1. The Horizontal-tube Evaporator operates on a similar principle as the climbing film evaporator, but overcomes the difficulty of replacement of the 7-meter long tubes and the necessity of a high head-space.​

• True

• False

In the case of the climbing film evaporator, the feed liquor enters at the top of the tubes and the liquor in it concentrates and vapors leave from the bottom. ​

• True

• False

The feed is distributed on steam tubes through a sprayer in the form of a spray. The sprayed droplets spread as a film allowing for an efficient evaporation. This is the case for which device?

• Lillie film evaporator

• Climbing film evaporator

• Falling film evaporator

• Wiped film evaporator

The flash evaporator is unsuitable for thermolabile drugs

• True

• False

In case of .............................................. evaporator, the movement of the liquid is assisted by gravity and therefore, highly viscous liquids can be handled.​