离子交换纤维树脂法净化二氧化硫尾气

Purification of SO_2 Acidic Tail Gas with Fiber Ion Exchanger

建立了一套净化空气中SO2 的实验室装置和流程。采用渗透稳定性好、吸附速率高的新型离子交换纤维树脂FibanAK -2 2G ,研究了动态条件下空气流速、吸附质 (SO2 )质量浓度以及空气湿度对该树脂吸附大气中的SO2 尾气的影响 ,确立了树脂的优化吸附条件。研究表明 ,树脂吸附量随SO2 尾气质量浓度增大而增大 ,当质量浓度达到 3 0 0mg/m3后 ,吸附量趋向树脂的交换容量。吻合等温吸附规则 ;SO2 尾气的相对湿度较小时 ,树脂对SO2 几乎不吸附 ,相对湿度≥ 5 0 %后 ,SO2 的吸附量平缓增加 ;SO2 吸附量与混合气的流速无关 ,在高线性气流速度下 ,使用的离子交换纤维树脂具有很好的吸附性能 。

A laboratory platform for simulating process of sorption of industrial acidic tail gas, such as SO\-2,from the atmosphere round factories was created. The novel fibrous ion exchanger (Fiban AK-22G) was used as a sorbent. The material is elastic to some degree and has great osmotic stability and high sorption rate. The influence of the airflow rate, sorbate (SO 2) concentration and airflow humidity on the sorption was studied.The optimal conditions of sorption were established, that is, the critical humidity valve corresponds to P/Po =50%;the amount of sorption of SO 2 is increased with the SO 2 concentration in the gas phase and reached saturation capacity of the ion exchanger, no super-equivalent sorption is found; the sorption amount of SO 2 is not affected by airflow rate in the linear rate range of (3 1～9 7)m/min.