Issues regarding gas resistance in the absorption tower
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It’s at the upper part of the absorption tower: methanol is drawn out there and then passes through an ammonia cooler (in our plant it’s an ammonia cooler; the principle is similar in other cases), before returning to the absorption tower. During this process, liquid accumulation can occur – even when the control valve is fully open, the methanol doesn’t flow down smoothly. This problem becomes more apparent as the load increases. After consulting the manufacturer, they said it was due to gas obstruction, but there’s no effective solution since there’s nowhere for the gas to escape. I’m using Lurgi’s process design, with a total of 13 towers. Please help me
For the two streams of methanol coming from Tower 1 in our Dalian University of Technology’s process unit, there is high-point exhaust; otherwise, the phenomenon you mentioned would also occur. Things that should be considered before driving originally – things that the leaders and technical staff in your workshop should think about.
May I ask whether the high-point exhaust at your location is before or after the heat exchanger?
There should be an exhaust valve on the pipe connected to the upper part of the coiled tube heat exchanger, right?
The one I have here isn’t a coil-type tube; it’s a U-shaped tube, and there’s no area for exhaust