Study On The Influence Mechanism Of Flue Gas Composition On The Foaming Of Desulphurizing Slurry

On the basis of the previous field experiments,the laboratory simulation of the desulfurization slurry in coal-fired power plants was carried out in this paper.By building a simulated absorption tower,the single factor experiment and orthogonal experiment were carried out to simulate the composition of the flue gas from the coal-fired power plant.The concentration of SO₂,the gas supply,the concentration of Ca²⁺,the concentration of Mg²⁺,the concentration of Cl^-,and the concentration of the gas in the coal-fired power plant were studied.SO₄^2-concentration,oil,fly ash and pulverized coal were used to characterize the effects of these flue gases on the foaming of desulphurized slurry:?1?SO₂ concentration?gas supply?Ca²⁺?Mg²⁺?Cl^-?SO₄^2-?COD?oil?fly ash?coal slurry on the foamability and stability of foam has certain contribution,but after reaching a certain concentration,and the slurry foam height and foam stability of time does not change much,eventually will fluctuate in a range in.?2?When there is a serious slurry bubble phenomenon in the desulfurization absorption tower,it will not be a factor in the action,it must be an abnormal index content of one or some factors,and the joint action with other factors will lead to a serious slurry bubble phenomenon.?3?The main effect of the five groups on the height of the blister is very significant.The order of the influence is:gas supply>coal>SO₂ concentration>fly ash>oil.The factors of the highest foaming height were:SO₂ concentration 1-gas supply 5-oil 4-coal 5-fly ash 5,and the lowest foaming height factors were SO₂concentration 2-gas supply 1-oil 1-coal 1-fly ash 1.?4?For the time of foam stability,the P value of SO₂ concentration and gas supply is greater than 0.05,and there is no statistical significance,but the main effect of oil,coal and fly ash is significant.The order of influence is:oil>coal>fly ash>SO₂concentration>gas supply.The factor combination of the longest foam stability time is SO₂ concentration 4-gas supply 2-oil 5-coal 5-fly ash 5;the factor combination of the shortest foam stability time is SO₂ concentration 5-gas supply 3-oil 1-coal 1-fly ash 1.