08-17: The Conversion From Gas to Tablet Chlorination: A Case Study

Chlorine gas is used extensively in large cooling tower applications, but the environmental and safety risks have left operators searching for alternatives. This paper will review a conversion from chlorine gas to calcium hypochlorite tablet feed technology on a gulf coast chlor-alkali plant cooling tower. The paper will exhibit, in detail, the impact on cost, corrosion, tower performance, calcium buildup, and safety and handling.