VENTURI SCRUBBER AND METHOD WITH OPTIMIZED REMOTE SPRAY

摘要

An air pollution control system incorporating a venturi scrubber (40) and a method of cleansing a particulate-laden, contaminated gas flow are disclosed. Spray nozzles (35) are used to introduce optimized droplets of a scrubbing liquid into the venturi to maximize the collection efficiency for optically active particles. The spray nozzles introduce the optimized droplets substantially upstream of the throat (50) of the venturi such that the spray mixes with the effluent gas flow and cools the gas flow to substantially its saturation temperature prior to entering the venturi throat. This promotes collection of condensibles and inhibits the revolatilization of contaminants that are collected by the scrubbing droplets which might otherwise evaporate in the hot gas flow. The optimized droplets are highly effective in rapidly cooling the effluent gas flow.