||Treatment of Gaseous Emissions from Steelplants Containing Small Concentrations of Hydrocarbon Vapors.
Lambert, H. X. ;
Szekely, Julian ;
||Massachusetts Inst. of Tech., Cambridge. Dept. of Materials Science and Engineering.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Iron and steel industry ;
Air pollution control equipment ;
Fluidized bed processors ;
Mathematical models ;
Combustion products ;
Industrial wastes ;
Activated charcoal ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The report gives results of an investigation of the feasibility of using a shallow fluidized bed of activated charcoal to remove small concentrations of hydrocarbon vapors in the presence of water vapor. This system can be applied to cleaning off-gases from sinterplants, coke ovens, and/or foundries. The investigated range of hydrocarbon vapors is 100-500 ng/cu cm air. It was found that a shallow fluidized bed of activated charcoal can efficiently remove hydrocarbons in preference to moisture at 80 C. The overall mass transfer coefficient can be calculated from data obtained in a laboratory apparatus, and the influence of various parameters on the overall reaction rate is discussed. A mathematical model based on adsorption theory is presented, which provides a means for testing the validity of the assumptions and also for preliminary scale-up calculations.