Two Essays per Week: How to Handle Synthesis Reduction 2012-10-9
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This post was last edited by TH373637 on 2012-10-9 21:06. The ammonia synthesis unit received a notification from the previous unit stating that the operation time needed to be reduced by 10 minutes, which would result in a reduction of about 1/20 of the gas flow rate. What changes will occur in the synthesis process if no adjustments are made?
Upon receiving a notification of reduced flow rate, the amount of gas fed into the tower (the circulation volume) should be reduced accordingly; otherwise, the catalyst temperature will drop. If the reduction in flow rate is significant and not adjusted in a timely manner, it may even lead to serious accidents related to temperature fluctuations.
Appropriate adjustments must be made by adjusting the circulation volume to maintain stability in the temperature of the synthesis furnace.
A gas flow rate of 1/20 is not very high, and the duration is also not long; it’s sufficient to slightly reduce the flow in the cold bypass line or decrease the circulation volume to prevent a drop in furnace temperature. Once the gas flow rate returns to normal, adjust the valves to their normal settings