CO concentration at outlet of 2nd Reformer

Forums Process & Operational Ammonia CO concentration at outlet of 2nd Reformer

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  • #45448
    Participant

    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%

    #45458
    Participant

    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.

    #45570
    Participant

    Thank you very much for the answer.

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