Effect of syngas components on synthesis
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Changes in the composition of the conversion gas can affect the synthesis reaction process. Our company uses a two-stage conversion method with natural gas and pure oxygen to produce synthesis gas. The composition of this conversion gas is as follows: 70% hydrogen, 0.38% methane, 20% carbon monoxide, and 9.5% carbon dioxide. The synthesis reaction is quite intense, and it is difficult to control the peak temperatures. Is it possible to achieve better control over the synthesis temperature by adjusting the ratio of carbon monoxide to carbon dioxide in the conversion gas? I am not sure what this ratio or range should be; I hope colleagues can provide some information on this.
This component is quite suitable; the hydrogen-to-carbon ratio is 2.051, which is good. If adjustments need to be made, it’s not the ratio of CO to CO2 that should be adjusted, but rather the hydrogen-to-carbon ratio. The gas produced through the conversion process should have more hydrogen, less CO, and more CO2 – this helps in controlling the temperature. However, CO2 consumes more hydrogen, as can be seen from the synthesis reaction equation
What is the composition of the feed gas? Catalytic or non-catalytic? Process conditions? It’s hard to judge just based on a single product’s odor, and there’s no information about the situation over time either.
Your CO2 level is quite high. The difficulty in controlling the bed temperature is mainly due to the poor controllability of your synthesis tower. I think the impact of increasing CO2 levels isn’t significant either
For this component, the temperature of the synthesis reaction should be easy to control. I wonder what type of synthesis tower you are using? It should be related to the type of synthesis tower and the control methods.