稳定性二氧化氯脱氮除硫实验研究

An Experimental Study of Removing Sulfur Dioxide and Nitrogen Oxides by Stabilized Chlorine Dioxide

实验以稳定性二氧化氯溶液作为吸收液,采用气液逆流操作,研究了填料高度、二氧化氯溶液的质量浓度及溶液的pH值等因素对稳定性二氧化氯脱氮除硫效果的影响。实验结果表明:二氧化氯的质量浓度对去除率的影响最大,溶液的pH值对去除率的影响较小,不论在酸性或碱性的条件下都能达到较高的去除率。当填料高度大于20 cm,二氧化氯的质量浓度为0.6 g/L,溶液的pH值为3.47时,NOx和SO2的去除率分别达到90%和99.95%以上。

In the experiment, stabilized chlorine dioxide solution was used as absorbent and gas-liquid countercurrent was adopted in operation. The effects of packing height, mass concentration of chlorine dioxide solution and solution pH value, etc. on the efficiency of removal rate of sulfur dioxide and nitrogen oxides by stabilized chlorine dioxide were investigated. The results show that the mass concentration of chlorine dioxide has the greatest impact on the removal rate and the pH value is of less influence on the removal rate. The removal rate can reach a higher level under both acidic and alkaline conditions. When the packing height is greater than 20 cm, chlorine dioxide concentration is 0.6 g/L, pH is 3.47, the removal rates of NOx and SO2 can reach 90 % and 99.95% respectively.