One-pass conversion rate of syngas in the large methanol process
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Our plant uses a two-stage synthesis process: first synthesis in a water-cooled tower and then in an air-cooled tower. The one-pass conversion rate of CO is only 15.5% – what level is that? What are the common methods to improve conversion rates? I have just started working with methanol; I hope those who are more experienced can offer me some advice!
The conversion rate is very low. I’m not aware of the detailed control parameters related to your catalyst, as well as temperature and pressure, but under these process conditions it is possible to reduce the CO content in the gas leaving the tower, or to decrease the amount of inert gases in the gas entering the tower. Additionally, it is possible to increase the H2 content in the gas entering the tower, thereby enhancing the driving force for synthesis (although the system pressure will increase accordingly). Additionally, measures such as raising the temperature, increasing the circulation volume, and replacing the catalyst need to be selected appropriately based on the actual conditions.
There are three factories across the country that use both water cooling and air cooling in their production processes. Which factory do you work for? Is it in Henan, Shandong, or Inner Mongolia? Please provide more details so I can help you resolve this issue.
You must have gotten it wrong; it’s the outlet concentration of 15%, right! Can it still be operated if the CO conversion rate is only 15%? At the very least, it should be 40%, and the catalyst should achieve a conversion rate of over 50% at the initial stage.