Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

20-40
43835
100-150
1000-1500

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Process Equipment and Plant Design
The LMTD correction factor (FT) is defined as the

Ratio of LMTD to the true temperature difference
Geometric mean of the true temperature difference and the LMTD
Ratio of true temperature difference to the LMTD
Differenced of true temperature difference and the LMTD

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