How to detect internal leakage in control valves in the pressure swing adsorption decarburization process.
Thread Content
How to check for internal leakage in control valves in the pressure swing adsorption carbon removal process? What experiences does everyone have?
It can be determined from changes in pressure, flow rate, and purity
Our company identifies issues based on the pressure and the sound produced when the valves are closed
I would like to ask, Haiyou – how accurate is this kind of judgment? Is it possible to determine with certainty which valve is leaking?
Checking the low-pressure valve under high pressure and the high-pressure valve under vacuum generally yields satisfactory results.
Judge whether the O-ring of the programmable valve needs to be replaced by observing the changes in the pressure curve
The actual pressure variation curve of the adsorption tower should be similar to the ideal curve, but not exactly the same. If the actual pressure curve of a certain adsorption tower differs significantly from the ideal curve shape, or if it differs greatly from the pressure curve shapes of other adsorption towers, it indicates that there is a problem with the operation of the system. Possible issues include faulty operation of the programmable valves in that adsorption tower, severe leakage in those programmable valves, an adsorption time that is not within the normal range, or malfunctions in the control valves PV301/HV101 and PV302/HV201.