Abnormal noise from the check valve on the outlet of the new hydrogen engine
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We have a 700,000-ton catalytic pyrolysis unit; the system pressure is 120 kilograms. The recycle hydrogen compressor is of the centrifugal type, while the new hydrogen compressor is a three-stage, three-row reciprocating compressor. Recently, the valve plate of the check valve on the outlet bus of the new hydrogen compressor has been vibrating severely and making a lot of noise. Has anyone encountered this issue? How can it be adjusted?
New hydrogen is reciprocating; it should make a regular sound as the piston moves. Unless your buffer tank is large enough.
It should be related to the airflow exiting the reciprocating machine
It is likely that the amount of new hydrogen is low, preventing the valve disc of the one-way plate valve from remaining open continuously
The output at level 3 is low; adjusting the load per unit is necessary. There is a problem with the operating condition of the check valve, which causes abnormal noises.
How is the system hydrogen consumption calculated? Can it be approximated as the amount of hydrogen replenished? If that’s the case, this situation has occurred both at a hydrogen consumption of 27,000 and at 36,000
Which check valve is of the air valve type or the swing-type?
Ours here is of the rotating type and makes noise frequently; it seems that it has little to do with traffic volume. Is it related to the fact that the liquid carrying and separation tanks are too small?
The check valve resonates at a certain flow rate; adjusting the hydrogen replenishment amount resolves the issue
It is likely that the total amount of hydrogen exported is too low, causing the check valve to sometimes open and sometimes close automatically. By adjusting the return flow in each circuit to ensure a sufficient discharge volume, the abnormal noise can be eliminated.