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燃料燃烧和硫化物热加工的烟气中,SOx以SO_2和SO_3形态存在。SO_2氧化和SO_3分解是一对可逆反应。SO_2+1/2O_2SO_3根据古尔维奇的物质自由焓函数°_T,SO_3生成反应的反应自由焓△G°_T可用下式精确计算:△G°_T=-95.9+0.089T(kJ) (1)式中T为绝对温度。由△G°_T可计算平衡常数Kp。lgKp=-△G°_T×1000/19.1428T (2)
SOx exists in the forms of SO 2 and SO 3 in the flue gases from fuel combustion and sulfide thermal processing. SO_2 oxidation and SO_3 decomposition is a pair of reversible reaction. SO_2 + 1 / 2O_2SO_3 The free enthalpy of reaction, ΔG ° _T, according to Gurwitz’s free enthalpy function ° _T and SO_3 can be calculated precisely by the following formula: ΔG ° _T = -95.9 + 0.089T (kJ) (1 ) Where T is the absolute temperature. The equilibrium constant Kp can be calculated from ΔG ° _T. lgKp = - ΔG ° _T × 1000 / 19.1428T (2)