Regarding the concentration of sulfur dioxide in exhaust gases
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Assuming that the concentration of hydrogen sulfide in the recycle gas remains constant, if I reduce the flow rate of gas in the main recycle gas pipeline, then will the concentration of sulfur dioxide in the exhaust gases emitted from the coke oven chimney decrease accordingly?
The amount of exhaust gas is proportional to the amount of gas and air, right? If the amount of gas decreases, then the amount of air also decreases, and as a result the amount of exhaust gas decreases as well. Correspondingly, the amount of sulfur dioxide also decreases, but the temperature will drop too! !
It will decrease, but the effect isn’t very significant. I’ve tried it before.
The total amount of sulfur dioxide has decreased, but the decrease is slight; this is mainly because the volume of air is relatively high, that is, the air excess factor is large. As a result, the volume of waste gas at this level of gas consumption also increases, leading to a minor decrease in its concentration.
What’s the reason? The flow rate has decreased, but my air volume remains the same as before
The actual measured level of sulfur dioxide in the exhaust gases will decrease, as the relative excess of air increases and the oxygen content in the exhaust gases rises; however, when converted to a specific oxygen content level (7% or 9%), the calculated value of sulfur dioxide remains largely unchanged.
It needs to be reduced, but there is no linear relationship