- Chlorine leaves the sulfuric acid dryer. Extremely hygroscopic, sulfuric acid is sprayed into the chlorine gas stream to remove moisture. To assure the process is working properly, analysis at this stage verifies dryer efficiency.
- Moisture slips through the system. Since most gashandling systems in chlorine plants operate at vacuum, the chances for moisture infiltration into the system increase. Valves and moving parts are likely targets for leaks that react with chlorine to form ferric chloride build-up in carbon steel pipes and components. Monitoring the moisture level alerts you to potential problems early on, before serious damage occurs.
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