Surge in the coking rich gas compressor
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During the operation of the coking rich gas compressor, a large amount of hydrogen is present in the inlet stream; why does this cause surging in the compressor? What are the theoretical reasons for surging?
Mainly, the inlet flow rate is low, and the inlet pressure is low! This causes the airflow to move back and forth within the engine, resulting in pulsed airflow! It causes the machine to vibrate, damaging its operational performance!
This issue depends on whether it is congenital or acquired; if it is congenital, the quality of installation can be checked. If it is acquired, it may be due to excessively high outlet pressure control set at the process specification value. Surge usually results from excessive outlet pressure, but too low inlet pressure can also cause surge, although the sound is different.
Hydrogen has a low molecular weight, so why is its reaction rate low?
Hydrogen has a low molecular weight, so why is its reaction rate low?
All centrifugal compressors are designed with a minimum flow rate! It is also related to the operating conditions of your system and the medium in use; is there any fluctuation in the inlet flow rate or pressure? Or might changes in the composition of the medium cause the surge point to shift towards the surge line, leading ultimately to surge!
Knowing that there is a minimum surge flow rate, I just want to ask what the reason (principle) behind limiting the molecular weight of the rich gas compressor is
Could you explain in more detail why a compressor experiences surge due to changes in molecular weight?
Changes in molecular weight lead to changes in the outlet pressure, or more precisely, to a decrease in the pressure rise across the inlet and outlet. This results in high-pressure hydrogen-rich gas flowing back into the compressor within the outlet pipeline, causing surging................