摘要
向石灰石脱硫浆液中添加硫酸钠可提高脱硫率 .以旋流板塔为吸收器 ,测定了钠强化石灰石湿式烟气脱硫过程的脱硫率、pH值等随脱硫反应时间的变化情况 ,对不同 pH值范围内的石灰石溶解速率等进行了分析 .在与工业操作温度相近的条件下 ,测定了不同塔板数时的脱硫率和塔压降 ,计算了平均单板效率 .结果表明 ,增加塔板数 ,脱硫率提高 ,而平均单板效率减小 ,实验条件下 ,塔板数由 1增加到 4,液气比为 4L/m3时脱硫率由 2 5 5 %提高到 48 6% ,而平均单板效率则由 2 5 5 %下降到 1 5 3 % .
Adding sodium sulfate to limestone slurry can increase SO\-2 removal efficiency. In this paper, sodium\|enhanced limestone flue gas desulfurization(FGD) tests were conducted in rotating\|stream tray scrubber. Changes of SO\-2 removal efficiency and pH value with time were experimentally studied and, at different pH range, the dissolution rates of limestone etc. were analyzed. The effects of plate number on SO\-2 removal efficiency and pressure drop were investigated at temperature approximated to industrial operating value. The average plate efficiencies were calculated. According to the experimental results, increasing plate number could increase SO\-2 removal efficiency, but the average plate efficiency decreased. Under the experimental conditions, when the plate number was increased from 1 to 4, the removal efficiency was increased from 25\^5% to 48\^6% at the liquid\|to\|gas ratio of 4L/m\+3, but the average plate efficiency was decreased from 25\^5% to 15\^3%. The equation of the relation between the average plate efficiency and plate number was obtained.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2002年第5期105-108,共4页
Environmental Science
基金
国家"九五"重点科技攻关课题 (96 910 0 1 0 2S 0 4 )
关键词
烟气脱硫
旋流板塔
硫酸钠
石灰石
二氧化硫
烟气脱硫
flue gas desulfurization
rotating\|stream tray scrubber
sodium sulfate
limestone
sulfur dioxide
