摘要
以改进后的双循环多级水幕塔对烟气进行除尘脱硫性能的研究,利用双循环不同pH值控制的优点和多级水幕的效果,增加气液接触面积和传质动力,提高SO2吸收效果。在正交实验的最佳运行工况基础上,实验从烟气流量、上下两段pH、L/G和SO2进气浓度等方面进行单因素研究。结果表明,除尘效率维持在98%以上,进气SO2浓度在5000 mg/m3以下时,脱硫率在93%以上。上段pH值为6、下段pH值为5、L/G在15左右的脱硫效率和运行工况最佳,无结垢现象发生。改进后的吸收塔具有良好的应用前景,实验结果对于现场脱硫设备的调试和运行有很好的参考价值。
The characteristics of flue gas dust removal and desulfurization using modified double-recycling and multi-stage water film tower were studied. In order to increase the SO2 removal efficiency, the experiment increased the contact probability of liquid and flue gas through using different pH control and multi-stage water film. Single factor＇ s research on the flue gas velocity, pH of up and down tower, ratio of liquid and flue gas and inlet SO2 concentration was carried out. The result shows that the dust removal efficiency is higher than 98% and SO2 removal efficiency keeps more than 93% if the inlet SO2 concentration keep less than 5 000 mg/m^3. There is neither CaSO3 ＇ s aggradation nor CaSO4＇ s aggradation under the best pH condition of 6 and 5 differently, and 15 of L/G. It has favorable future of application, and also has considerable reference worthiness to debugging and running of spot equipment for desulfurization.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第1期151-155,共5页
Chinese Journal of Environmental Engineering
基金
中国矿业大学青年科研基金资助项目(0P061020)
关键词
双循环
多级水幕
吸收塔
除尘脱硫
double-recycling
muhi-stage water film
absorption tower
dust removal and desulfurization
