PSA liquid separation for hydrogen production
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During winter, liquid tends to accumulate in the hydrogen production PSA units. Due to the frequent need to drain this liquid, some of the drain valves on site have developed internal leaks. I would like to ask fellow professionals: do your hydrogen production PSA units require frequent liquid drainage? Petrochemical Zone—The “Creative Ideas” event for energy-saving innovations: http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are waiting for you to claim them
Cut once a week, with very little liquid!
What device? The gas-liquid separator ahead isn’t good, is it?
The PSA adsorption towers are switched off once a week; basically, it’s very rare for a set of equipment to start operating in May and then only be switched off once during winter, out of concern that the valves might get damaged due to the cold, even though there is plenty of water available.
It depends on the source of the raw material; efforts should be made to eliminate it at the source. To be honest, cutting off the liquid during PSA is quite dangerous.
Yes, that’s true; when the air velocity is high, it’s inevitable that the separation of vapor and liquid won’t be optimal.
This task must be done by an experienced person; it’s very dangerous for a novice who isn’t afraid of anything.
That’s probably a design issue. It’s also difficult to resolve operationally. It is advisable to install a simple water seal at the drain outlet for safety.
Before entering the PSA unit here, there are four intermediate pressure gas water separation tanks. Theoretically, intermediate pressure gas should not enter the PSA unit at night, but over time, liquid can accumulate in the PSA unit; this is especially true when the temperature of the intermediate pressure gas is too high, as it makes it more likely for such gas to enter the PSA unit at night. So PSA drains the liquid irregularly, but more frequently in winter.