Problems with the outlet vent of the propylene compressor
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In our facility’s propylene compressor, when it is shut down, the compressor speed drops to 2650 rpm (with 2613 being the lowest controllable speed). The outlet pressure is around 1.2 MPa in summer and 0.9 MPa in winter. The anti-surge valve is fully open, and all the shutdown valves designed for transitioning from the third stage to the first stage are also open; yet this does not prevent reverse rotation (up to 1000 rpm). I am seeking advice – are there any better solutions?
York M machine? Install check valves and balance pipes at the outlet
When installing a check valve at the outlet, make sure to place it close to the compressor outlet; a too large distance will result in poor performance. In addition, check valves are also installed at the inlet of each section to effectively prevent reversal. For inlets, axial-flow low-pressure drop check valves are recommended.