Issues with the quality of refined alcohols
Thread Content
Reasons for high levels of alkoxy ketones and solutions to address them
Problems in the methanol synthesis reaction: Ensure proper control of reflux and temperature levels in distillation
Is there an increase in the negative reactions in methanol synthesis? Is it possible to adjust the hydrogen-to-carbon ratio?
Many factors come into play, and the hydrogen-to-carbon ratio is just one of them
It is likely caused by an excess of synthetic by-products. Increasing the reflux ratio and appropriately raising the yield of fusel oils are among the adjustment methods used in distillation. When there are more synthetic by-products, adjusting the hydrogen-to-carbon ratio alone doesn’t seem very effective in my opinion. Bed temperature, pressure, catalyst activity, and so on, are all closely related to the formation of by-products. How long has the catalyst been in use? ? ?
The carbonyl compound you are referring to is probably iron carbonyl; one reason for this is the high iron content in the catalyst itself. Second, the synthesis system was not thoroughly purged. In the distillation section, increasing the reflux ratio can be employed to prevent heavier components from rising and ending up in the pure alcohol.