Suddenly no flow at the outlet of the ammonium methoxide pump during normal operation
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The methylammonium pump was operating normally, but the outlet flow suddenly disappeared; the pump’s backflow also decreased, as did the current readings. I would like to ask what causes this phenomenon?
It probably wasn’t because the traffic increased again later on
What happens to the high-pressure and low-pressure pressures when the flow rate decreases? Is your ammonia pump driven by a turbine or by an electric motor?
Were you operating at low capacity at that time? Check the temperature of the cooling water; take a look at its trend to see if it has remained low for an extended period
When the flow rate is low, the high-pressure side experiences overpressure and the low-pressure side also rises; the pump is a high-speed centrifugal pump
It’s still caused by high pressure or overpressure; such conditions increase the resistance at the pump outlet, and it’s normal for the pump’s flow rate to decrease. Is the rise in low-pressure due to a full liquid level?
After analysis, it was found that the temperature of the low-pressure cooling water was too low~
A methylammonium pump is generally a piston pump, so it won’t fail to deliver fluid due to blockage.
It’s not a piston pump; it’s a high-speed centrifugal pump.
1. Methylamine exhibits crystallization (check what measures you took when the flow rate decreased). 2. The pump is evacuated. Considering these two aspects, if the high-pressure level rises, the pump should be able to deliver fluid. If it rose to a point where delivery becomes impossible, the machine would have stopped operating already. Check the pump’s head pressure and compare it with the high-pressure level to see whether delivery is possible.