Where is it suitable to operate gaseous ammonia in the refining system?
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To further reduce energy consumption, we are also implementing the use of gaseous ammonia in the refining system. There are issues with gas flow obstruction; could you tell me where it is best to implement this solution and how to make the necessary adjustments? I’d like to learn more about it*
The amount of ammonia added to the copper washing system is about 1% of the ammonia synthesis output. Adding gaseous ammonia can eliminate the compression energy required for that gaseous ammonia, but the amount is so small that it holds little practical significance. Low temperatures are favorable for the absorption of gaseous ammonia; it should theoretically be placed after the water cooler, but due to the lack of specialized absorption equipment, ammonia absorption remains a problem. Both water coolers and ammonia coolers are prone to gas accumulation, especially vertical ammonia coolers; it is difficult to remove the accumulated gas in such cases. If it is added to the pipes after water cooling, a buffer tank exhaust system must be installed; the location of the pipes also needs to be taken into account to prevent air blockages within the pipes, as well as to stop ammonia gas from flowing back into the water cooling system. Talk about those that were successfully modified.
Could the poster provide a detailed explanation of your ammonia addition process? I’d like to know.
This post was last edited by ZZJJAA70 on 2009-11-9 at 19:00. We used to use gaseous ammonia as well, but eventually switched back to liquid ammonia. Using gaseous ammonia can save some compression energy, but the amount of ammonia in the chiller’s storage tank decreases over time, so it is necessary to top up the tank frequently, which is not very convenient. Operating in ammonia production mode also yields excellent results; it can be added directly to the middle part of the water-cooled exhaust.
We tried using gaseous ammonia before, but we gave up on it due to flow restrictions; anyway, it doesn’t seem to provide any significant energy-saving benefit, and the refrigeration units are still not sufficient in summer. It’s probably something like what was said on the second floor! However, there might still be some shortcomings or aspects we haven’t paid attention to. You can ask about “Tibet”; it seems that they used this thing in past conversations with him and it worked well. . . . . .