Investigation of Co-Sorption of Gases and Vapors as a Means to Enhance Indoor AirQuality. Phase 2. Air Dehumidification and Removal of Indoor Pollutants by Liquid Desiccants. Topical Report, April 1990-July 1992

摘要

Several solid and liquid desiccants were studied to determine their ability forremoving pollutants from indoor air in the presence of water vapor. This volume presents the study on dehumidification of air in a packed bed absorber by aqueous solutions of lithium chloride and triethylene glycol and their pollutant removal capabilities. A packed bed absorber-stripper system has been designed and tested successfully for dehumidification of air and pollutant removal. Measured flooding conditions corresponded closely with existing empirical correlations. For a given height of packing, the column efficiency increased as either the air flow rate decreased or the liquid flow rate increased. The mass transfer coefficients increased with increasing air and liquid flow rates. Lowering the liquid temperature improved the column performance significantly.