Does the CO2 content in synthetic ammonia affect the CO conversion rate?
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Is a high level of carbon dioxide in the previous section likely to affect the CO conversion rate? Can the steam consumption be reduced while maintaining the water-to-vapor ratio? Will it cause a decrease in the CO conversion rate?
CO + H2O ——> CO2 + H2. An increase in the carbon dioxide concentration alone reduces the conversion rate; if CO levels also decrease, it is possible to reduce the amount of water vapor used. The specific impact depends on the extent of changes in both substances
This post was last edited by pick deng Watching the Sword on 2022-8-2 at 14:31. In the previous process stage, the concentration of CO2 in the syngas produced by the methane steam reforming reaction was relatively high. Does CO2 affect the CO conversion rate? If the previous section reduces the steam load while maintaining the water-to-gas ratio, will the CO conversion rate in the shift section be affected?
CO + H2O ——> CO2 + H2; this is an equilibrium reaction
It will definitely have an impact; it depends on the specific data
A high water-to-carbon ratio in the conversion process is beneficial for methane conversion as well as for the shift reaction; however, the use of more steam increases energy consumption； Generally, for the outlet of a two-stage furnace, it is required that the ratio of CO to CO2 be roughly equal, or that CO2 be slightly higher than CO ； If the CO ratio at the outlet of the two-stage furnace is higher than that of CO2, carbon deposition is likely to occur.
Reducing the water vapor ratio leads to a decrease in the carbon monoxide conversion rate
Increase the gasification water-to-gas ratio and reduce steam consumption; determine the changes in various quantities based on the carbon monoxide level at the three-variable outlet! Increasing the water-to-vapor ratio by one or two degrees reduces steam consumption and saves costs