Questions about the quench tower
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This post was last edited by liaifeng on 2018-8-9 09:42. The ammonia nitrogen level in the quench water of the emergency cooling tower is 6000 mg/l – where does this ammonia nitrogen come from?
Analyze the acidic gas entering the processing unit to determine whether ammonia may be present in the acidic gas from upstream.
Analyze the acidic gas. Generally, acidic gases contain nitrogen; the ammonia content can be determined by comparing variations in furnace temperature and air supply, as well as by analyzing the ammonia content in the acidic gases
What kind of device is the quench tower?
It should be due to the fact that the ammonia nitrogen component present in the exhaust has not been completely burned
Personally, I think trying to conduct a full-component analysis of the sulfur-producing exhaust gases and making comparisons should yield some findings. I’d like to ask the original poster why you rushed to conduct ammonia nitrogen analysis in cold water? Has it affected absorption? Are there any other phenomena?
The high amount of ammonia nitrogen in the quench water is mainly caused by incomplete combustion of ammonia in the sulfur production furnace. Or the ammonia burning process is not implemented, resulting in ammonia levels of over 1% in the acidic gases
It is estimated that the high ammonia content in the acidic gas is caused by insufficient and incomplete combustion of ammonia; it is necessary to examine the composition of the acidic gas in the raw materials as well as the temperature of the acidic gas combustion furnace, in order to determine whether the conditions for proper ammonia combustion are met. For feedstock acidic gases with a high ammonia concentration, attention should be paid to the issue of ammonia combustion; newly designed systems may consider using separate ammonia combustion nozzles.
Generally, in upstream stripping units without ammonia extraction via side streams, the ammonia content in the acidic gas is high; in such cases, if the temperature of the sulfur production furnace is too low, below 1250 degrees, the ammonia content in the subsequent streams will be extremely high……