CAJ | 학술논문

分析了石灰石-石膏湿法脱硫过程，提出了合理假设，建立了喷淋塔内液滴的运动微分方程、液相离子的平衡关系以及气液传质过程的数学模型，考察了不同操作参数对脱硫率的影响。结果表明，脱硫率随吸收液pH值及喷淋密度的增大而增大，随液滴直径、烟气流速、入口SO 2浓度及温度的增大而减小，其中液滴直径、吸收液pH值及喷淋密度对脱硫率的影响较显著，温度对脱硫率影响不大；脱硫率的模型计算值与实际值吻合较好，该模型可为石灰石-石膏湿法喷淋脱硫系统优化提供参考。
분석료석회석-석고습법탈류과정，제출료합리가설，건립료분림탑내액적적운동미분방정、액상리자적평형관계이급기액전질과정적수학모형，고찰료불동조작삼수대탈류솔적영향。결과표명，탈류솔수흡수액pH치급분림밀도적증대이증대，수액적직경、연기류속、입구SO 2농도급온도적증대이감소，기중액적직경、흡수액pH치급분림밀도대탈류솔적영향교현저，온도대탈류솔영향불대；탈류솔적모형계산치여실제치문합교호，해모형가위석회석-석고습법분림탈류계통우화제공삼고。
Reasonable assumptions were proposed based on desulfurization process analysis. The differential equations of droplet motion, the equilibrium of ions in liquid phase and the mathematical model of mass transfer were presented for investigating influences of operating parameters on desulfurization efficiency. The results show that desulfurization efficiency increases with increasing pH value of absorbent and spray density, and decreases with increasing droplet diameter, superficial gas velocity, inlet SO2 concentration and gas temperature, respectively. Furthermore, influences of droplet diameter, pH value of absorbent and spray density on desulphurization efficiency are obvious, while gas temperature has little effect on it. Model predictions of desulfurization efficiency are in agreement with plant data, and this model may provide guidance on optimization of wet limestone-gypsum flue gas desulfurization system.