- Mass Transfer - Section 1
- Mass Transfer - Section 2
- Mass Transfer - Section 3
- Mass Transfer - Section 4
- Mass Transfer - Section 5
- Mass Transfer - Section 6
- Mass Transfer - Section 7
- Mass Transfer - Section 8
- Mass Transfer - Section 9
- Mass Transfer - Section 10
- Mass Transfer - Section 11
- Mass Transfer - Section 12
- Mass Transfer - Section 13
- Mass Transfer - Section 14


Mass Transfer - Engineering
Q1: Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty ?A Grid tray tower
B Perforated tray tower
C Wetted wall tower
D Bubble cap tower
ANS:C - Wetted wall tower A wetted wall tower, also known as a packed column with a wetted wall, is a type of gas-liquid contacting device used in chemical engineering and process industries for various separation and absorption processes. In a wetted wall tower, the column wall is kept wetted with the liquid phase, while the gas phase flows upward through the column. The liquid phase is continuously distributed over the column wall, forming a thin film. As the gas phase flows upward, it comes into contact with this thin film of liquid on the column wall. Mass transfer occurs between the gas and liquid phases through the interface of the liquid film. The wetted wall tower is often packed with inert packing material to increase the surface area available for gas-liquid contact and enhance mass transfer efficiency. The packing material helps to maintain the thin film of liquid on the column wall by promoting even distribution of the liquid and preventing it from draining down the column too quickly. This type of column design offers several advantages:
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