Chlorine system purging
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Is it necessary to purge the chlorine system of moisture before starting up the system after maintenance? What’s the indicator value?
Before performing the displacement of the chlorine system, it is necessary to remove the water-containing chlorine to ensure the cleanliness and safety of the system. The specific indicators depend on the actual situation. Generally, the moisture content of the chlorine gas after displacement should be below 10 ppm (i.e., 10 mg/m³). However, it is recommended to conduct tests before performing system replacement to determine the current chlorine water content, so that appropriate measures can be taken. .
What gas is used for purging the chlorine system? Air, nitrogen? Currently, for chlorine compressors, the required water content is less than 50 ppm. Before starting the compressor, nitrogen is used to initiate its operation through self-circulation, and online analyzers are generally used to monitor the water content in the chlorine in real time. It is unlikely that water content is measured only before starting the compressor, as at that time air is usually drawn in by the exhaust fans