Methanol synthesis
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Dear experts, I have the following question: At present, the purity of methanol in my plant is low, and the carbon dioxide level in the fresh gas is high. Since we are operating at 110% capacity, reducing carbon dioxide levels in order to increase the temperature of the carbon monoxide bed would cause the temperature to rise excessively. How can I improve the purity of methanol by adjusting the levels of carbon monoxide, carbon dioxide, and inert gases, without causing the bed temperature to rise too much, while still maintaining my methanol production volume (pure methanol)?
Increase the CO ratio appropriately, but keep CO2 above 3%
Could you provide a specific adjustment figure? It is best to attach the basis (heat balance or otherwise)
One enterprise in Shanxi is Lindata; after catalyst reduction, the temperature is 280°C, while the current peak temperature reaches 307°C. If it is necessary to send materials to QQ1784948610
Process and balance data are needed; I can help you analyze it.
David’s methanol synthesis technique: inlet CO: 25%, hydrogen: 68%, CO2: 5%
It’s simple: first increase the space velocity (recycle ratio), and then gradually raise the CO proportion. The higher the space velocity, the lower the one-pass conversion rate of the catalyst, and the temperature of the catalytic bed decreases accordingly, but the overall conversion rate increases