The desulfurization liquid contains ammonia
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Dear fellow sailors, the ammonia content in the desulfurization liquid at our factory has suddenly decreased, and it still hasn’t returned to normal. What factors could be affecting this phenomenon? The ammonia vaporization process is operating normally.
1. Rising temperatures lead to significant volatilization losses of ammonia； 2. The levels of acidic components in gas, such as hydrogen sulfide and hydrogen cyanide, increased abnormally, which led to the large-scale neutralization of ammonia in the desulfurization solution, preventing its timely regeneration ； 3. Poor regeneration ； 4. Abnormal operations of the coke oven caused a sharp drop in the ammonia content in the gas.
I wonder what the ammonia content in your desulfurization solution is, and what the pH value is? Have you tried to see if sulfur foam can be produced properly at a pH level of over 10?
There are the same problems as well; it’s a good opportunity to learn together*:victory:
For ammonia-based desulfurization, one can check the following possible reasons: whether the CO2 level in the gas has increased abnormally, and whether there has been a change in the type of coal used； Has the catalyst content in the desulfurization solution decreased abnormally? ； Has the inhalation condition during regeneration worsened, and is there any blockage or backflow in the ejector? ； Is the solution temperature too high or too low? I guess your conditions aren’t very good, so there’s no need to check things like potential.