Why is it necessary to keep the carbon dioxide concentration in lime kilns within a certain range? What are the effects of too high or too low concentrations?
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This post was last edited by chen-jun-1024 on 2010-12-7 at 17:48. Why is it necessary to keep the carbon dioxide concentration in the lime kiln within a certain range? What are the effects of too high or too low concentrations?
It should be the higher, the better, but the theoretical maximum CO2 concentration in the flue gas produced by existing lime kilns is 44%; it cannot go any higher than that. A low CO2 concentration in the kiln gas primarily leads to a decrease in the carbonization conversion rate, damage to the sulfur film in the carbonization tower, and deterioration of the carbonization crystals, among other issues. At the same time, when the CO2 concentration decreases, the CO concentration naturally rises, which can lead to risks such as poisoning.