Let’s talk about refining and adding ammonia
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Now that the temperature is gradually rising, what is the most economical way to add ammonia to the refining system? / Our copper liquid total ammonia is controlled at around 9.5, what is your index?
Our total ammonia is also controlled at about 10. However, the ammonia used in the refining system is mainly lost with the regeneration gas, so it is most economical to control the regeneration temperature (we control it at about 75 degrees).
We control it at about 10, and generally implement long-term addition and small addition. The volatilized ammonia in the regeneration gas is recovered for desulfurization. The current temperature should not be enough for desulfurization.
I very much agree with the approach on the third floor. When adding ammonia to the cupro ammonia liquid system, add ammonia frequently and sparingly. This can not only stabilize the ammonia content, but is also very important for the stability of the entire system.
The system adds 9-12% ammonia, which can be flexibly controlled according to the load. Add less ammonia and add more often. Control the reflux tower and regeneration temperature well, improve the reflux tower, improve absorption efficiency, and prevent ammonia loss. This post was last posted by * Edited by aoye613 on 2009-3-11 11:15 ]
I always control the ammonia added to the system to be around 11mol/l. The ammonia level in the ammonia cooler should not be too high, 70%.
Just add aerated ammonia, which can reduce the load of the ice machine. The total ammonia content should be determined according to the system load, the carbon dioxide content in the gas, and the regeneration gas temperature. Generally, it should be controlled at 9-10M.
We control it at 9.0-9.5, add gas ammonia at the ammonia cooling outlet, and add it continuously, so that the total ammonia will not fluctuate. Regeneration 75-78℃.
We control it around 8.5. Generally, we add twice per shift (8 hours), about 100 kilograms each time. Pay attention to the outlet temperature of the reflux tower and the regenerator. Our regenerator temperature is controlled at around 80°C. This post was last posted by * Edited by aoye613 on 2009-3-11 11:17 ]
We control it at 9.5-10.5, add it continuously, and add it from the middle of the cold row.
We control it between 9 and 12. The ammonia content in the regeneration gas is high. After recycling, the ammonia nitrogen value in the desulfurization cooling water will also increase quickly, which puts great pressure on environmental protection. So we are now sending the regeneration gas to the blown air combustion furnace for use as gas-supporting gas.