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“String‐of‐beads” flow of liquids on vertical wires for gas absorption
Author(s) -
Chinju Hirofumi,
Uchiyama Kazunori,
Mori Yasuhiko H.
Publication year - 2000
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.690460508
Subject(s) - mixing (physics) , aqueous solution , flow (mathematics) , string (physics) , mass transfer , materials science , coating , absorption (acoustics) , flue gas , composite material , mechanics , chemistry , analytical chemistry (journal) , chromatography , physics , organic chemistry , quantum mechanics
A liquid steadily fed onto a thin wire vertically held in a gas stream may flow down the wire, taking the form of a “string of beads,” which is a composite of teardrop‐shaped beads regularly aligned on the wire and thin cylindrical films each coating the portion of the wire between two neighboring beads. The beads slide down at a constant speed, interacting with the films flowing down much more slowly, thereby inducing some mixing motion in the liquid phase. The string‐of‐beads flow exhibited by water or an aqueous monoethanolamine solution was observed, and the mass transfer of CO 2 from the surrounding CO 2 /N 2 mixture into water flowing down single wires was studied both experimentally and analytically. The results indicate the potential of on‐wire string‐of‐beads flow devices for innovating gas–liquid contact operations to be used in, for example, removing CO 2 from flue gases exhausted at fossil‐fuel‐fired power plants.