The ammonia level in the boiler water is above the limit, while all other parameters are normal. What could be the reason? How to adjust?
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The ammonia level in the boiler water is above the limit, while all other parameters are normal. What could be the reason? How to adjust?
It is possible that there is a leak in the feedwater heat exchanger for the ammonia synthesis outlet boiler; it is recommended to take samples from the exit of this heat exchanger to analyze the ammonia content, as well as to assess the quality of the steam desalination water. In such cases, there are usually suspect sections, which are checked one by one until the evidence of fault is found. I think 90% of the time it’s likely a problem with the heat exchanger.
If it is confirmed that there is a leak in the boiler feedwater heat exchanger at the exit of the synthesis tower, the following adjustments should be made: 1. Try to maintain the pressure in the high-pressure steam pipeline network. 2. Minimize the pressure in the synthesis loop. 3. The goal is to minimize the pressure difference between the high-pressure steam and the synthesis circuit as much as possible. This can reduce the leakage rate of the heat exchanger. 4. Regularly analyze the ammonia content at the outlet of the boiler feedwater heat exchanger at the exit of the synthesis tower on a daily basis, keep proper records of monitoring; if the leakage worsens, it is recommended to stop the operation immediately to seal the leak.
First: The issues should be addressed one by one from a technical perspective, as mentioned above. Secondly: Keep a close eye on the situation; if problems are detected, corresponding levels of shutdown measures must be taken. Failure to do so can lead to severe corrosion of the equipment, causing damage to it and potentially resulting in major safety accidents.
I wonder what kind of furnace water you are? If it is boiler water filling and urea is also used, the condensate of the urea system should be checked for leaks, as well as any leaks in the equipment that uses steam for heating or in those components that recover water as seal water back into the condensate tank. The source of the boiler water, as well as the heat exchangers related to ammonia and deionized water, should be investigated. Our company uses primary water to cool gaseous ammonia; if the heat exchanger leaks, ammonia will be present in the primary water first.
It is actually quite difficult to achieve a high ammonia level while keeping other parameters such as pH and conductivity within acceptable ranges. If this does occur, check for any leakage of organic substances. If other parameters are also abnormal, examine the addition of ammonia, look for leaks, and inspect the purifier
““The ammonia level in the boiler water is above the limit, while all other parameters are normal.” What kind of furnace is it? Is it a boiler? What is used to adjust the pH of your deionized water – ammonia?