Control of imported CO content after methanol production restrictions
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After the methanol production limit is imposed, what is the most economical carbon content for imported CO?
Is the poster referring to the ligand alcohol process? If so, ensuring the safety and stability of the system should be the top priority. Maintaining the bed temperature of the alcohol column and reducing the loss of CO after alcohol production are the best considerations. On the other hand, it is also necessary to consider the potential of the purification unit for the synthetic feed gas, in order to ensure the proper operation of the ammonia synthesis tower.
Regardless of whether production is restricted or not, for methanol, (H2-CO2)/(CO+CO2) = 2.05–2.1; generally, a higher proportion of H2 is beneficial for synthesis. There seems to be no limit on the CO content.