Upward and downward blowing issues in gas generators
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In one cycle of gas production, there are top-blown and bottom-blown gas generation processes; in which stage does semi-water gas have a high carbon monoxide content? Why?
Carbon monoxide is high during the top-blowing stage because the temperature is high at that stage.
It should be during the upper blowing stage, because the furnace temperature is highest after blowing. Hot carbon reacts with water vapor to produce large amounts of carbon monoxide and hydrogen
But the result of our analysis showed a high level of carbon monoxide in the downward flow
That’s because the upper blowing stage contains other impure gas (flue gas from the heating process)
Nitrogen is blown in from above, with no nitrogen at the bottom； Judging solely from the reactions, C+H2O=H2+CO and C+2H2=CO2+2H2; with a higher temperature for upward gas flow, there should be more hydrogen, and also more CO2 compared to downward gas flow ；
Based on actual analysis, generally, the quality of the gas blown downward is better than that of the gas blown upward, and the amount of gas blown upward is greater