摘要
以鼓泡式脱硫塔为例,采用双膜模型对烟气脱硫过程进行了数值模拟,并与试验结果进行了比较。结果表明:影响鼓泡式脱硫反应过程的主要因素有烟气中SO2含量、吸收液浓度、气体温度、pH值及喷管浸入深度等;在运行中应保持pH值>8和浸管深度>200mm,且吸收液浓度4.5%左右较为合适.同时,脱硫效率对入口烟气温度变化敏感,入口烟气温度越低,脱硫效率越高.通过对这些因素的分析,有助于脱硫装置的运行优化.
Taking the bubbling desulferization absorber as an example, numerical simulation on flue gas desulfurization （FGD） process was carried out with a double films model, and the results of which were compared with actual experimental data. Results show that, major factors influencing the bubbling desulfurization process include the SO2 concentration in flue gas, the absorbent concentration, the gas temperature, the pH value and the immersion depth of nozzle etc. It＇s found to be appropriate in operation that the pH value and immersion depth of nozzle are separately kept to be above 8 and 200mm, and the concentration of adsorbent about 4. 5%. Inlet gas temperature has a significant influence on the desulfurization efficiency, which increases with decreasing inlet gas temperature. Operation optimization of desulfurization equipments is being promoted through above analysis.
出处
《动力工程》
EI
CSCD
北大核心
2008年第3期433-437,446,共6页
Power Engineering
关键词
环境科学
数值模拟
烟气脱硫
吸收塔
脱硫效率
environmental science
numerical simulation
FGD
absorber
desulfurization efficiency
