Stripping (chemistry)

[2] Trayed towers consist of a vertical column with liquid flowing in the top and out the bottom.

The purpose of these trays is to increase the amount of contact area between the liquid and vapor phases.

[2] The degree of recovery is often determined by environmental regulations, such as for volatile organic compounds like chloroform.

As stripping agents are gases, operation at nearly the highest temperature and lowest pressure that will maintain the components and not vaporize the liquid feed stream is desired.

[2] The size of the equipment, and particularly the height and diameter, is important in determining the possibility of flow channeling that would reduce the contact area between the liquid and vapor streams.

Using structured packing is a common method to increase the capacity for separation or to replace damaged trays.

Older generation packing include ceramic Raschig rings and Berl saddles.

A changed pressure drop over a significant range of time can be an indication that the packing may need to be replaced or cleaned.

Stripping is commonly used in industrial applications to remove harmful contaminants from waste streams.

[4] The soils are dredged from the bottom of contaminated harbors, mixed with water to make a slurry and then stripped with steam.