Design of steam-stripping columns for removal of volatile organic compounds from water using random and structured packings

Citation
Jr. Ortiz-del Castillo et al., Design of steam-stripping columns for removal of volatile organic compounds from water using random and structured packings, IND ENG RES, 39(3), 2000, pp. 731-739
Citations number
17
Categorie Soggetti
Chemical Engineering
Journal title
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN journal
08885885 → ACNP
Volume
39
Issue
3
Year of publication
2000
Pages
731 - 739
Database
ISI
SICI code
0888-5885(200003)39:3<731:DOSCFR>2.0.ZU;2-X
Abstract
Mass-transfer data at different feed and steam rates, using structured and random packings, have been collected to develop a model for the design or a nalysis of packed columns for stripping of volatile organic compounds (VOCs ) from water. The steam-stripping experiments were conducted in a stainless steel column of 0.245-m internal diameter, with 2.8 m of packed section. T he packings used were Sulzer EX gauze structured packing, Mellapak 250Y str uctured packing, 1-in. Flexirings, and 1-in. Flerrimax random packing. The VOCs were chloroform (CH3Cl) and toluene (C7H8). The model considers the si multaneous occurrence of mass transfer and hydraulic phenomena with the sam e expressions for liquid and vapor mass-transfer coefficients and the same expression for effective interfacial area with one constant for each packin g. The average deviation for the measured and calculated volumetric mass-tr ansfer coefficient and effective height of packing is 0.29 and 0.23, respec tively.