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New pressure drop correlation for sieve tray distillation columns
Author(s) -
Bennett D. L.,
Agrawal Rakesh,
Cook P. J.
Publication year - 1983
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690290313
Subject(s) - tray , pressure drop , distillation , sieve (category theory) , surface tension , mechanics , drop (telecommunication) , chemistry , thermodynamics , materials science , composite material , chromatography , mathematics , mechanical engineering , engineering , physics , combinatorics
Pressure drop data for distillation sieve trays have been obtained with experimental trays with small outlet weir heights, including zero, and for trays with small perforations which exhibit large pressure drops due to surface tension. These data have been added to literature data to form a large composite data base with extensive variations in fluid and gas properties, flow rates, and tray designs. A new pressure drop correlation has been developed which retains the use of the dry tray pressure drop, but provides new procedures for estimating liquid inventory and the resistance to vapor flow due to surface tension forces. This correlation gives a mean absolute error of 6.0% and an average error of −0.6%. These errors are significantly less than the errors between measurements and predictions from two other correlations using the same composite data base.