烟气中气体组分对活性半焦脱硫性能的影响

Effects of the Gas Ingredients in the Process of Desulphurization by Activated Semi-char

用自制的活性半焦颗粒在SO2-O2-N2-H2O(g)体系下,在动力学控制条件范围内,考察了SO2浓度为0.08%～0.2%,O2浓度为4%～10%,H2O(g)浓度为6%～14%,反应温度为368～398 K范围内SO2、O2、H2O(g)及温度等对活性半焦脱硫性能的影响。结果表明:脱硫速率对O2浓度变化最不敏感,SO2次之;对H2O(g)的浓度变化最为敏感,且存在一个最佳的浓度值(8%)。

With the range of SO2 0.08%-0.2%, O2 4%-10%, H2O （g） 6%-14% and temperature 368-398 K, in the system of SO2-O2-N2-H2O（g）, the effects of H2O（g）, SO2, O2 and temperature on the desulphurization characteristic of the manual activated semi-char were investigated under the kinetic controlling condition. The results showed that the sensitivity of the desulphurization rate was under the following order： H2O （g）〉SO2〉O2 can be drawn. In addition, when the maximum desulphurization rate was achieved, an optimum H2O（g） concentration was observed at 8%.