The ammonia content in the cleaned acidic gas is 5.7% – does this have an impact on sulfur production?
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The ammonia content in the cleaned acidic gas is 5.7% – does this have an impact on sulfur production? 20,000 tons/year sulfur recovery unit, SSR sulfur recovery process.
This post was last edited by QiguDaiYu on 2015-6-11 at 15:17. Does cleaning remove ammonia from acidic gases? What does it mean to remove 5.7% ammonia from acidic gases? Is it confirmed that the analysis is okay? The impact on sulfur production depends on whether your sulfur production furnace uses ammonia-fired burners, as well as on the ammonia concentration in the gas containing amino compounds; only by considering these factors can we better assess the impact on sulfur production. At the very least, solvent regeneration will become unstable, the sulfur recovery rate in sulfur production will decrease, and the SO2 emissions from the flue gases are likely to be high.
Clean acidic gas should not contain such high levels of ammonia; what is the level of hydrogen sulfide? How much hydrocarbons are present? What is acidic gas in wastewater?
As the ammonia content in the acidic gas increases, the sulfur recovery rate decreases. The ammonia in the acidic gas must be completely burned in the sulfur production furnace to be decomposed into N2 and H2O; otherwise, ammonium salt crystals will form and clog downstream equipment, which can lead to shutdowns in severe cases. Depending on the ammonia content in the acidic gas, two process options are available: either not burning the ammonia or burning it. The operating temperature for ammonia combustion in the sulfur production furnace is around 1250 degrees Celsius. To determine whether it affects the sulfur production efficiency, it depends on your process flow
There is a problem if your acidic cleaning gas contains ammonia; if the ammonia concentration exceeds 5%, and if the ammonia is not treated using an ammonia-burning burner process, the furnace temperature will not reach the 1250°C required for ammonia decomposition, which can lead to blockages in the pipelines and equipment due to hydrogen sulfide and ammonia crystals； Even with the use of ammonia-burning burners, the percentage should not exceed 8%. If it exceeds this level, ammonia cannot be decomposed into nitrogen in a timely manner, which leads to the formation of hydrogen sulfide and ammonia crystals that can clog the pipeline equipment. Instead, nitrogen oxides are produced, and these nitrogen oxides act as catalysts in the Claus reaction for the formation of aluminosilicates, thereby causing the catalyst to become inactive.
This is clearly not a cleaning acidic gas, but rather an aminoacid-containing acidic gas; the conditions associated with ammonia combustion need to be taken into account. Otherwise, blockages and corrosion in downstream equipment will be severe, and it will also affect the sulfur recovery rate
It cannot be burned (to reach a temperature of 1250 degrees and use ammonia-burning nozzles); this will cause blockages in the pipes, especially at the outlet of the waste heat boiler and in the sulfur condenser.
The ammonia in acidic gas must be completely burned and decomposed into N2 and H2O in the sulfur production furnace; otherwise, ammonium salt crystals will form and block downstream equipment, which in severe cases can lead to shutdowns. Depending on the ammonia content in the acidic gas, two process options are available: either not burning the ammonia or burning it. The operating temperature for ammonia combustion in the sulfur production furnace is around 1250 degrees Celsius. Acidic gas contains ammonia; it is best to adjust the acidic gas stripping unit so that it can achieve complete separation
There should be no ammonia extraction process via side lines.