Why Is Liquid Chlorine Only Filled to 80% in Containers? Understanding the Safety Reason

Why is Liquid Chlorine Filled Up to 80% of the Total Volume in a Chlorine Container?

The reason liquid chlorine is filled up to 80% of the total volume in a chlorine container is primarily for safety. This allows for expansion of the liquid due to temperature changes, preventing pressure build-up that could lead to container rupture. Ensuring there is enough space for the liquid to expand helps maintain the integrity of the container and ensures safe storage and handling.

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Dear All,
Why is liquid chlorine filled up to 80% of the total volume in a chlorine container?

Volume and Temperature Relationship:
The volume of liquid chlorine increases rapidly as its temperature rises. Chlorine confined in pipelines or containers that are subjected to a rising temperature increases in volume and pressure. Please refer to the temperature-density relation for liquid chlorine in the attached file.

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S.C. Yadav
Chlor-Alkali Plant

Why is Liquid Chlorine Filled Up to 80% of the Total Volume in a Chlorine Container?

Liquid chlorine has a high thermal expansion rate. As the temperature rises, the volume of the tonner increases. The 80% volume level corresponds to 15 degrees Celsius. As the temperature continues to rise, the tonner approaches full capacity at 67 degrees Celsius. Beyond this point, with further increases in temperature, the tonner bulges. It is crucial to monitor the temperature and release some quantity of liquid chlorine into the system promptly. Failure to release excess pressure can lead to a dangerous explosion, posing risks to individuals and the environment. Chlorine is a respiratory hazard that can affect humans, animals, and vegetation alike.

Please refer to my presentation for more detailed information.

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H S SEHGAL