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The Meaning of Droplet‐Droplet Interaction for the Wet Flue‐Gas Cleaning Process
Author(s) -
Kaesemann R.,
Fahlenkamp H.
Publication year - 2002
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/1521-4125(20020709)25:7<739::aid-ceat739>3.0.co;2-7
Subject(s) - flue gas , collision , mechanics , suspension (topology) , mass transfer , surface tension , process (computing) , flow (mathematics) , chemistry , coagulation , materials science , thermodynamics , physics , computer science , psychology , computer security , mathematics , homotopy , psychiatry , pure mathematics , operating system , organic chemistry
In most large coal‐fired power plants an absorption process with a limestone suspension is applied today. The flue gas proceeds upwards through a series of spray headers that introduce a uniform liquid flux of droplets of the limestone suspension. These droplets resist the gas flow and provide a large mass transfer surface area required for the SO 2 removal process. During the spray overlapping the collision of the droplets may lead to a coagulation or a separation process depending on certain collision parameters, such as surface tension, impact velocity and collision geometry. A model for droplet collisions was developed and implemented in a two‐phase flow simulation by Euler‐Lagrange. The model is based on experimental investigations with overlapping sprays.