Using Toulene monitoring as a safety measurement in the ammonia refrigeration cycle

Compression refrigerator machines with ammonia as cooling agents are used for heat removal in a rubber production plant. To prevent ignition inside the compressors, you need to ensure no combustibles from the process are present in the cooling agent. One critical component is toluene, which is used as solvent in the polymerization process. For safe operation of the production plant, the customer requires a low concentration toluene measurement

Emerson's Proven Solution?

Toluene can be measured with a NDUV photo-meter utilizing a mercury lamp at 254 nm. A 0-300 to 3000 ppm toluene bench with a 200 mm analysis cell can be integrated into a Rosemount X-STREAM XEFD continuous gas analyzer.

If you are using Ammonia as a refrigerant check this out. This might not be the most advanced system, and has some considerations if you ask me, however it is a relatively quick and dirty solution in Ammonia refrigerant cooling systems.

“To know and not to do is really not to know.”  Stephen Covey
In other words now you know how is  two different cooling systems detection of leakage of refrigerant can be detected. I am not asking you to challenge the safety system in place, but I am asking to be mindful that it greatly improves process stafety when on top of the regular control system a detection system of leakage of regfrigerant is in place. More often than once you will find no leak detection in place what can cause unplanned shutdowns, deterioration of cooling capacity, and toxination of your to be cooled medium.

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Mark McGregor