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› Forums › Process & Operational › Ammonia › CO concentration at outlet of 2nd Reformer
Hi,
Can someone explain why CO concentration increases at the outlet of 2nd reformer while CO2 concentration decreases when compared to Primary reformer outlet. Ours is 2200MTPD Topsoe Plant.
PRO SRO
CO-8.88 13.56
CO2-9.63 6.42
CH4-15.33 0.21
Composition in vol%
Hi,
Reason is the much higher temperature (1000 deg vs 800 deg). The water gas shift reaction favours CO at higher temperature. That fact explains the two stage shift section where the final step is at low (200 deg C) temperature.
Thank you very much for the answer.
Because the fire reaction is incomplete and produces an amount of carbon monoxide more than pr.reformer
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