Catalytic press outlet reverse flow control valve!
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Hello everyone, I would like to ask why the counter-rotation control valve of our catalytic compressor is placed at a high position on the air-cooling platform, rather than near the outlet valve of the unit? They say it has been thought through.
If it is located on the unit’s outlet platform, that point represents a low point. Since the counterflow pipeline is connected to the distillation overhead gas line, a large amount of oil will condense and accumulate in this pipeline. If there is a problem with the unit, even if the counterflow valve is opened, the pressure at the unit’s outlet cannot be reduced, nor can the flow rate at the inlet be increased; as a result, the unit will still experience surge. I’m not sure if what I said is correct; please give me your advice
That’s absolutely correct; it should also be added that water at the bottom can easily cause frost cracking/
Are there any other considerations! Everyone, think about it. One of my friends suggested installing it near the oil and gas manifold, as pressure transmission would be faster in that case. Is that reasonable?
I’ve never heard of that reason; pressure balance can’t be caused by just a few pipes. Our factory is located fairly far to the south, so we didn’t consider anti-freezing measures
If the anti-surge valve is not placed at the highest point but rather near the compressor outlet, under normal conditions the valve remains closed, and the anti-surge line will gradually be filled with condensate from the rich gas at the air-cooler inlet. When it needs to be opened, a liquid seal will occur. Moreover, the standards require insulation. Of course, if the backflow of some compressors is at a low level on a continuous basis, it has little impact.
A large amount of oil will condense and accumulate in the reverse flow pipeline; should there be a problem with the unit, even if the reverse flow valve is opened, the outlet pressure of the unit cannot be reduced and the inlet flow rate cannot be increased either, resulting in surge in the unit. The location should be as close as possible to the oil-gas line at the top of the tower, in order to reduce the pressure drop