化工学报 ›› 2010, Vol. 61 ›› Issue (9): 2463-2467.

• 能源和环境工程 • 上一篇    下一篇

喷淋塔氨法烟气脱硫模型与实验研究

刘国荣,王政威,魏玉垒,吉庆林   

  1. 中国石油大学(华东)机电工程学院
  • 出版日期:2010-09-05 发布日期:2010-09-05

Experimental study and modeling for ammonia desulphurization in spray tower

LIU Guorong,WANG Zhengwei,WEI Yulei,JI Qinglin   

  • Online:2010-09-05 Published:2010-09-05

摘要:

在氨法烟气脱硫喷淋塔的实验系统上对影响氨法脱硫效率的几个主要因素进行了实验研究。实验结果表明:提高液气比和浆液pH值、降低烟气温度和烟气空塔气速均可以提高脱硫效率。在双膜理论的基础上,通过对氨法脱硫过程中SO2传质速率方程和螺旋型喷嘴液滴直径大小关联式的分析,建立了喷淋塔氨法脱硫的数学模型。利用该模型对影响氨法脱硫效率的几个主要因素进行计算,并与实验结果进行比较,实验数据和模型计算值基本吻合。

关键词:

氨法脱硫, 喷淋塔, 脱硫效率, 模型, 传质速率

Abstract:

An experiment is performed to investigate the effects of several key factors on the efficiency of ammonia desulphurization.The experimental results show that it is possible to improve the desulphurization efficiency by some ways,such as increasing the liquid-gas ratio and slurry pH value,lowering the flue gas temperature or its flow speed.Based on the two-film theory,a mathematical model for ammonia desulphurization in spray towers is established.With the analysis on the correlation between the mass transfer rate equation of SO2 and the spiral-type nozzle droplet diameter,this model is used to calculate the main factors affecting the desulphurization efficiency.The calculation results are consistent with experimental data.

Key words:

氨法脱硫, 喷淋塔, 脱硫效率, 模型, 传质速率