Ah, the molecular sieve is contaminated with water..................
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It’s been repeatedly emphasized that the method of adding chemicals to the circulating water is important, but new workers just don’t pay enough attention to it; as a result, there are too many bubbles, the molecular sieves used in air separation end up with water in them, and the carbon dioxide level exceeds the specified limit by 5 PPM. Even after shutting down the heat exchanger promptly, it still gets slightly clogged, forcing us to restart the heating process........... Is there any interlock mechanism in place for monitoring these minor issues? ? ? I’d like to change our low-range measurement to 10PPM; is it feasible to stop the system immediately for regeneration as soon as that level is exceeded? ? ?
If you feel that the heat exchanger is clogged, it means water entered it several cycles ago; foam entrainment should not be that severe. Check if the air-cooled tower has low pressure It’s best not to use a chain lock for carbon dioxide; can you ensure that the gauge remains functional at all times? You can’t decide on such major control projects, can you? The person in charge is really annoyed; how can they still have the energy to talk about this? If this is true, make sure your boss doesn’t see this post – I’m already having trouble finding someone to take my anger out on. .
We don’t bring it; usually, an alarm is installed. The original poster is probably a leader, or at least an experienced person. Tianxia Ge says it’s not good if a leader sees it, but it’s also not good if a \"novice\" sees it
Hehe, it’s not that serious, right? Everyone is just exchanging technical information on how to avoid it. I heard from a friend that there are some with chain settings in small quantities. Generally, when the level exceeds 1 PPM as an alarm, it’s necessary to carefully investigate the cause and resolve the issue as soon as possible...........
What I mean is that even the technical department might not be able to decide on changing such settings; it’s not something that one person can handle. Such things can be considered as experience for later; it’s not good to say so when the issue hasn’t been resolved yet. Also, avoid repeating things over and over; that only shows that you are emphasizing the wrong things or that your team lacks the necessary execution ability. In the event of an accident, don’t push downward; on normal days when there’s no work to be done, giving the cylinder a push at critical moments can still increase its efficiency.
We have also experienced severe water carryover issues due to too rapid and excessive dosing of chemicals in the circulating water; during molecular sieve regeneration, a large amount of water is ejected from the vent silencer
As long as the standards are exceeded, the cause must be identified; by the time resistance in the plate exchange occurs, it will already be too late! Experience is very important! Furthermore, when adding chemicals to the circulating water, it is essential to closely monitor the operating parameters of the air-cooled tower; the most obvious one of these is the resistance of the air-cooled tower!
The occurrence of such things is mainly a management issue, so there’s no need to rack one’s brains looking for other reasons. It’s estimated that the poster is a technical manager with no subordinates, so their words lack impact. So I would recommend that your supervisor increase the level of assessment – if someone can’t handle such a simple task, let alone more complex processes involving operating equipment. With proper management, such incidents can definitely be prevented. (For reference)
We don’t use interlocks here; generally, alarms are installed instead. Because our CO2 gauge isn’t accurate enough; the value is usually above 1.5PPM, and moreover, it’s not our operators who add the chemical
Is the OP from XH? It has happened many times before; a quick response is needed to deal with it.
The carbon dioxide level exceeds 5PPM; how long did this process take? What is the value set for the alarm? Has there been no change in the resistance of the air-cooling tower?