摘要
基于氧化镁湿法烟气脱硫工艺应用中存在的问题,对影响氧化镁湿法脱硫率及可用率的关键参数如SO2浓度、烟气量、循环吸收液PH值、液气比、曝气量等进行了一系列单因素调整试验研究,得出各参数对脱硫效率的影响趋势;对不同含硫量的燃煤,应采用不同的液气比和吸收剂浆液的PH值,吸收剂浆液PH值控制在5.8比较合理;增强循环槽浆液的曝气氧化是防止吸收塔结垢的有效措施。这些措施为氧化镁脱硫工艺的实际运行提供最佳控制点和最优的运行方式,使脱硫效率和可用率达到先进水平。
In order to solve the problems in the operation of magnesia FGD, experimental investigations were carried out with various operating parameters such as the concentration of sulfur dioxide, the flue gas flow rate, the absorption liquid PH value, the liquid-gas ratio, and the aeration flow etc. The influence of the operating parameters on the desulphurization efficiency was analyzed. Different liquid-gas ratios and different PH values of the absorption liquid ought to be used for coal with different sulfur contents. It is more reasonable to control the PH value of the absorption liquid at 5.8. Enhancing the aeration of absorption liquid is an effective measure to prevent the absorption tower from fouling. The results of the research provided the optimum control parameters and operation mode to improve the efficiency and the availability of FGD.
出处
《能源研究与信息》
2011年第3期145-150,共6页
Energy Research and Information
关键词
烟气脱硫
二氧化硫
氧化镁
脱硫效率
FGD
sulfur dioxide
magnesia
desulfurization efficiency
