SULFUR DIOXIDE ABATEMENT SYSTEM

摘要

The liquid cooling spray in a gas cooling tower (10) is modified to scrub sulfur dioxide and other acid forming gases. A slurry of fine particles of hydrated lime having a mean diameter less than 25 microns is supplied from a slurry source (61) and injected by a slurry injector (62) into the liquid coolant before it is sprayed into the gas cooling tower (10). A plurality of spray nozzles (55) and control means (60) are provided for introducing an atomized spray in a controllable manner and a slurry injector (62) and control means (60) are provided for introducing a controlled amount of the hydrated lime slurry to maximize the sulfur dioxide collection efficiency at a low molar ratio of calcium to sulfur.