改性粉煤灰处理铅酸蓄电池厂硫酸雾实验研究

Study on modified fly-ash for removal of sulfuric acid mist from lead-acid battery industry

采用CaO改性后的粉煤灰来处理铅酸蓄电池厂的硫酸雾,研究了改性前后、改性时粉煤灰与CaO的质量比、改性温度、固液比(CaO、粉煤灰的混合物与水的比例)、改性时间、孔隙率对去除效果的影响。结果表明,采用CaO改性粉煤灰,当粉煤灰与CaO质量比为15∶1,改性温度为120℃,固液比为1∶10,改性时间为5 h,孔隙率为14%时,硫酸酸雾去除率最高,可达97%。改性后的粉煤灰对酸雾的去除率比改性前整体提高了40%。

To remove the sulfuric acid mist from lead-acid battery production,CaO was used as modifier for fly-ash.The influence of the mass ratio of the fly ash and CaO,modifying time and temperature,the mass ratio of water and solid and material porosity on the removal efficiency of sulfuric acid mist was experimentally studied.The results show that,when modified with CaO,with the fly ash/CaO mass ratio of 15,modified temperature of 120 ℃,water/solid mass ratio of 10,modified time of 5 h and the adsorbent porosity of 14%,the removal efficiency is the highest to even be over 97%.The removal rate of sulfuric acid mist by the modified fly ash increased 40% than that before.