What is the level of development of the all-low transformation process?
Thread Content
I have reviewed many studies, most of which date back to around 2005; at that time, low-low and full-low conversion processes were still under discussion. After more than a decade of development, the current full-low conversion process suffers from a short service life for the catalyst used in one of its stages as well as high resistance. How have these two shortcomings been addressed so far? What is the current mainstream process for transformation? Could I ask everyone?
I’m not very familiar with the field of synthetic ammonia; I just learned about it passively. I look forward to authoritative answers from experts.
It mainly depends on what the downstream products of production are Methanol synthesis requires carbon monoxide; therefore, deep conversion is not necessary, and a full low-temperature conversion process combined with an isothermal conversion furnace can be used ； For synthetic ammonia, the syngas needs to undergo deep conversion, and the medium-high-low process is generally used.
Full low-temperature transformation + alkoxylation to meet the requirements of ammonia synthesis production
Alkyl hydrocarboxylation is still the practice adopted by some small and medium-sized nitrogen fertilizer plants today; the mainstream process for large-scale nitrogen fertilizer production is low-temperature methanol washing plus liquid nitrogen washing
Full low-temperature shift or isothermal conversion, combined with low-temperature methanol washing and liquid nitrogen washing, results in the production of synthetic ammonia. This process is closely related to the gasification step; the gasification technique determines the choice of conversion process. Overall, however, these technological processes are quite mature.
The current mainstream process for large-scale nitrogen fertilizers is low-temperature methanol washing + liquid nitrogen washing
Thank you for sharing, coming in to learn!* ! ! ! !