Hydrogenation reactor bed pressure drop
Thread Content
Does the amount of cold hydrogen have an impact on the measurement of the pressure drop across the reactor bed? The overall pressure drop across the entire bed is positive, while the pressure drop across individual layers is negative; there are no issues with the process flow. It is initially suspected that this is related to the amount of cold hydrogen present!
Yes, check the hydrogen flushing pipeline, especially the one connected to the bed that is at negative pressure
The amount of cold hydrogen certainly has an impact on the pressure drop across the reactor bed. Take a look at the pressure gauge on site; the differential pressure reading may not be accurate
What is flushing hydrogen? Please give an answer, experts
The flushing hydrogen is measured using circulating hydrogen and a orifice plate, primarily to prevent inaccurate pressure readings caused by coking or changes in the medium. It means that the pressure measurement point is continuously blown with a small amount of hydrogen.
I would like to ask where the hydrogen supplied to the pressure testing shop ends up Has it entered the reactor? Does the flushing hydrogen also have a significant impact on the measurement of reactor pressure drop?
If a single bed layer shows a negative value, there is definitely a problem with the instrument. Check the purge hydrogen; if it is normal, then it’s likely an issue with the instrument, and you can compare it with the pressure gauge on site.
I’m in the system now. The second question is mainly to check whether there are any errors in the process settings
It’s probably due to poor flushing of the hydrogen line; give it a try by checking that