| Abstract: | The purpose of this paper on industrial plan evaluation is twofold: to present tools which can be used to evaluate quantitatively certain aspects of air pollution control devices, and to point up specifically two areas in which research is urgently needed. These research areas are in removing solid particles after wetting in scrubbers and use of surface active agents in scrubbing gaseous pollutants. Therefore, the body of information presented is directed to engineers in the field of evaluating the air pollution potential of new industrial plants, to scientists involved in determining the parameters and effectiveness of control devices, and to research and development scientists in the field of surfactants. One tool presented is a chart for measuring the effectiveness of incinerator afterburners and vapor incinerators. The required inputs to the chart are the rate of flue gas flow in standard cubic feet per minute and the auxiliary fuel burner capacity in Btu per hour. The chart yields the flue gas temperature increase which will result, given in degrees F. The second tool presented is a new psychrometric graph for the humidifying and cooling of gases from processes as hot as 3000°F. Inputs into the graph are the temperature of the gases entering the sprays from the hot process and the temperature desired before they enter a control device such as a fabric filter or a scrubber. The chart yield is the amount of water needed in gallons per thousand cubic feet of gas. The only calculation needed is a correction of the hot gas volume to 70°F. Water needed to saturate the gases can be read directly also. |
