• 关键词：SO₂₊  SO₃  露点  溶解度  计算方法

• 基金项目：

• 李彦
• 清华大学热能工程系, 煤的高效低污染技术国家重点实验室, 北京 100084

• 武彬
• 清华大学热能工程系, 煤的高效低污染技术国家重点实验室, 北京 100084

• 徐旭常
• 清华大学热能工程系, 煤的高效低污染技术国家重点实验室, 北京 100084

• 摘要：研究了不同浓度的SO₂₊对空气露点的影响，从而为烟气露点的准确确定提供了依据。研究结果表明，SO₂₊的分压对露点的影响常不超过1K, 而SO₃的分压是决定含氧化硫的烟气露点的主要因素。烟气脱硫的增湿活化技术的机理看来不是SO₂₊溶于烟气中的水滴，然后被CaO吸收，应作进一步研究探讨.

• Abstract：The effect of SO₂₊ concentration on the dew point temperature of air were studied. The results of this study provide the basis for the determination of dew point temperature of flue gas. The effects of SO₂₊ and SO₃ on dew point temperature were compared. The temperature of dew point of flue gas was measured at different partial pressures of SO₂₊( p-SO₂₊ ) and SO₃( p-SO₃ ). The test results indicated that the influence of p-SO₂₊ on dew point is not over 1K, and p-SO₃ is the main factor of controlling the dew point of flue gas. A new method of predicting the dew point temperature of flue gas was proposed.

• Key words：SO₂₊  SO₃  Dew point  solubility  flue gas.

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