分析氨合成塔上层触媒失活的原因，采取措施将氨合成塔上层部分触媒不钝化卸出，并装填新触媒。
Author has analyzed the poisoning reason of catalyst in Kellog ammonia converter, presented the technical measures preventing catalyst from poison.
分析氨合成塔上层触媒失活的原因 ，采取措施将氨合成塔上层部分触媒不钝化卸出 ，并装填新触媒。
The cause of low catalyst utilization rate in the lower part adiabatic layer of converter is analyzed.
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