High outlet pressure of the process gas compressor (turbine centrifugal type)
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Our compressor unit is now experiencing high outlet pressure, especially when exhaust gas returns to the front; the increased load leads to high discharge pressure in the fourth stage. (The reason for this is that we have two lines; when the load is the same, the discharge pressures of the units on these two lines are different, with one being higher and the other lower.) I would like to ask how the discharge pressure can be adjusted through process adjustments. Note: Behind the compressor is the high-pressure separation tower; the compressor is equipped with three reflux and one non-reflux anti-surge control valves, as well as four reflux and four non-reflux anti-surge control valves.
As the gas composition becomes heavier, and the inlet temperature is low while the inlet pressure is high, the outlet pressure will increase.