When using liquid ammonia to produce 32% ammonia solution, how can one determine the cause of no flow?
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After the valves for preparing liquid ammonia are opened, the temperature of the heat exchanger does not drop, and there is no flow of ammonia solution in the preparation pipeline. Various methods have been tried, but successful preparation is not possible; it is suspected that the bottom flow control valve is damaged. How can this issue be diagnosed, and are there any solutions? Ammonia tank CW is pressurized, then flows through a flow valve, a mixing valve, a heat exchanger, and finally reaches the mixer.
It’s difficult to determine the specific structure of the equipment pipelines.
We encountered the same problem – there was no opportunity to open the tank for inspection; we could only use N2 gas for backflushing. Has the original poster been able to identify the issue?
Only by providing detailed information on the processes, equipment, and issues can the problems be analyzed effectively