Mathematical model and comparative analysis of critical flue gas emission temperature of wet plume removal technologies

Aiming at the commonly used wet plume uplift model and temperature-humidity graph tangent model, derives the calculation formulas of critical flue gas emission temperature under two models, and compares and analyses the deviation of critical flue gas emission temperature under three wet plume removal technologies of flue gas heating, condensation and condensation and reheating. The results show that the environment of low temperature and high humidity and the high initial reheating temperature of flue gas condensation and reheating technology are not conducive to the elimination of wet plume. The change rules of the results obtained by two models are completely consistent. However, compared with the wet plume uplift model, the critical flue gas emission temperature of the temperature-humidity graph tangent model is 3.5 to 4.5 ℃ higher under heating technology, 0.5 to 1.5 ℃ lower under condensation technology, and 1 to 7 ℃ higher under condensation and reheating technology. The critical flue gas emission temperature calculated by the temperature-humidity graph tangent model can meet the requirements of the wet plume uplift model for wet plume removal.