【作者】 郭启超；

【导师】 张承中；

【作者基本信息】 西安建筑科技大学 ， 环境工程， 2004， 硕士

【摘要】 本文研究了以钢铁企业常用物料活性石灰和自备电厂粉煤灰制备的脱硫剂，在鞍钢循环流化床脱硫试验装置上进行了烧结烟气脱硫性能试验。首次将活性石灰和粉煤灰组成的脱硫剂引入钢铁企业烧结烟气循环流化床烟气脱硫系统，并取得成功。本研究的目的是，充分利用钢铁企业现有碱性原料和碱性废物，研究开发适合烧结机烟气循环流化床脱硫的新型脱硫剂，达到以废治废和降低运行成本，提高脱硫剂利用率的目的，为我国烧结烟气脱硫的发展提供支持。 本研究烧结烟气SO₂浓度范围在200～500mg／m³，烟气量4150～5000m³／h，烟气温度在80～135℃的条件下，对活性石灰和粉煤灰组成的脱硫剂进行了脱硫剂配比试验，脱硫前后脱硫剂粒径分析试验，脱硫剂加水活化、烟气蒸汽增湿脱硫对比试验及钙硫比对脱硫效率影响试验研究。试验结果表明，活性石灰与粉煤灰的质量比按1：2配置时，脱硫剂钙的利用率较高，并具有相对较好的经济性；通过对脱硫前后脱硫剂粒径变化对比分析，循环流化床脱硫过程可导致大颗粒减小，小颗粒增加。在脱硫剂粒径分布分析的基础上，选择出5-350μm为本试验装置较合适的脱硫剂粒径范围。脱硫剂加6％的水活化比不加水活化具有更好的脱硫效果；烟气蒸汽增湿有利于脱硫剂钙的利用率和SO₂累积去除量的提高；优选出的脱硫剂连续性试验表明本试验装置在钙硫比1.5时可以取得70％的脱硫效率。试验及分析结果表明活性石灰与粉煤灰组成的脱硫剂充分利用了钢铁企业现有碱性原料和碱性废物，以废治废，是适合烧结机烟气脱硫的新型脱硫剂。更多还原

【Abstract】 A research was carried out on the desulfurization reagent made by lime that is common used in steel corporation and pulverized coal ash produced by steel corporation’s fossil power plant, and a trial about the capability of the desulfurization reagent on the Ore sintering flue gas was done in the Angang’s Circulating fluidized bed absorber tester. In this trial, the desulfurization reagent made by lime and pulverized coal ash was first used in the ore sintering flue gas desulfurization in circulating fluidized bed absorber and made a success. The aim of this study is to make the best used of the alkalescent raw material and alkalescent waste material of the steel corporation. So it help to find a new kind of the desulfurization reagent which can be used in the ore sintering flue gas desulfurization in circulating fluidized bed absorber and reduce the run cost, increase the desulfurization reagent using ratio. The result of the study may give the support to the ore sintering flue gas desulfurization.The research was done under the condition of 200~500 mg/m3 SO2 inlet concentration, 4150~5000m3/h and 80-135℃ ore sintering flue gas. The desulfurization reagent optimum burden test, the desulfurization reagent particle diameter distributing analysis , activation test by water, and increasing flue gas humidity test by steam were done. The results of test indicated that, when the desulfurization reagent made by lime and pulverized coal ash under the mass proportion of 1:2, the desulfurization reagent Ca using ratio and economy of material were better; The desulfurization reagent particle diameter comparison analysis shows that the process of desulfurization in circulating fluidized bed absorber may cause big particle decrease, and little particle increase. On the basic of the desulfurization reagent particle diameter distributing analysis, it gives the range from 5 to 350 u m of the desulfurization reagent particle diameter which adapt to the tester; and The desulfurization reagent has more desulfurated effect by 6% wateractivation; and the desulfurization reagent Ca using ratio and SO2 accumulative remove total have been increased by increasing flue gas humidity by steam. The selected desulfurization reagent continuous loop test indicated that in this tester the SO2 removal eflficiency was 70% at 1.5 of Ca/s mole ratio. The test and the results of test indicated that the desulfurization reagent made by lime and pulverized coal ash make the best use of the steel corporation alkalescence raw material and alkalescence waster. So it may be a new kind of the desulfurization reagent which adapt to the ore sintering flue gas desulfurization.更多还原