Regarding the issue of clogged on-site level gauges in the refining regenerator
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In units equipped with less advanced instrumentation, clogging of the glass level gauge in the regenerator of the synthesis refining process is a troublesome issue. Even if a glass level gauge is not used and only the pressure difference principle is applied, the gas phase is prone to clogging. This is because both carbon dioxide and ammonia are present in the regenerator’s glass level gauge; when the temperature drops below a certain level, ammonium carbonate crystals form. Especially in winter, I believe many colleagues have tried various solutions. I too have considered many approaches, and now I can say that I have found a solution. My method involves introducing a very small amount of air into the gas phase pipeline – my factory happens to have a pressure air pipe passing near the refining regenerator equipment. Once the gas phase space is filled with air, no more crystallization occurs. As long as the amount of air introduced isn’t too large, it has no impact on the copper content either! Here, I would like to recommend this to my colleagues, and I am also interested in knowing how they deal with the problem of clogged level gauges in the refining regenerator.
The original poster is really talented! In this way, it’s also possible to adjust the copper ratio depending on the amount of air introduced. I think that air tube isn’t just passing through there by chance; it’s meant for adjusting the copper ratio! Our regeneration level gauge isn’t a glass tube type, but rather one that uses electrical signals, so it won’t get clogged.
Our level gauge usually has the gas phase open while the liquid phase is closed; it is opened during hourly inspections, and there has been no blockage.
The gas phase of the level gauge in our factory is continuously purged with steam~~~
In our plant, the recycled liquid level is preheated using hot water through a rubber hose applied to the liquid level gauge tube.
We use plug-in (capacitive) level gauges, which are accurate and do not get clogged.
Glass tube level gauge, vapor purging for long-term use in the gas phase
We use capacitive level gauges, and they have worked well all along.