Exported ammonia
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Can the level of ammonia at the outlet of the synthesis tower indicate the quality of the catalyst?
If the ammonia content at the inlet of the synthesis tower is constant, then the level of ammonia at the outlet of the synthesis tower indicates the quality of the catalyst.
It is necessary to consider imported ammonia, circulation volume, and hotspot temperature comprehensively; a one-size-fits-all approach is not feasible
Under normal load conditions and operating modes, the net ammonia value can be used to determine the stage of catalyst activity.
It cannot alone indicate the quality of a catalyst, but it is also one of the main methods for evaluating separation systems.
A comprehensive judgment must be made by taking into account factors such as the components of the fresh gas and recycled gas, tower pressure, tower temperature, and system load. It is best to make comparisons based on the process reports from the past few months, identify the changes therein, and then analyze and draw conclusions.
When all other operating conditions are at their rated levels, the ammonia at the outlet can be used as a measure of catalyst activity