What to do if ammonia gets into the nitrogen line
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Feed the reaction mixture to start up the process, in preparation for passivating the catalyst with ammonia. Shortly after the ammonia injection pump was started, a strong ammonia smell came from the circulating hydrogen compressor; it was found that ammonia had entered the nitrogen line. What should be done?
Is there a problem with the process? Check it
Check the process to see if any nitrogen valve is not closed or is leaking. Generally, there are two valves at the nitrogen injection point, and there is also an exhaust valve between them; by using the exhaust valve, it’s possible to determine which valve is leaking. Once identified, a blind flange can be used to isolate that valve, after which the nitrogen line can be purged by using the exhaust valve.