Yellow solids appear in the reflux tank and reflux pump
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Yellow solids have appeared in the top reflux tank and reflux pump of the Linde cryogenic methanol recovery unit – could it be sulfur? Is it caused by ammonium carbonate crystals? Will it have an adverse effect on the system over time? How to solve it?
Burn it and see if there’s a pungent odor of sulfur dioxide
The yellow substance coming from this place is likely elemental sulfur, which has a pungent odor. It generally doesn’t appear on its own; is there also a green color present, like slag? First of all, it can be said that your pump is leaking, but I don’t know where the leakage is occurring, as you described. Leakage repair is required; check whether the pump body is in good condition. If the leaks cannot be fixed and there are no plans to shut down the operation in the short term, then increased inspections of this area are necessary, along with the use of warning barriers and regular measurements of hydrogen sulfide levels.
Yes, it’s yellow-green; the pressure measurement tubes and differential pressure gauges located at the top of the thermal regeneration tower can easily get clogged by this substance. I earnestly ask the experts: what are the solutions?
Ammonium hydrosulfide – ammonia levels in the gas are too high; let’s find a solution for this