壳牌炉粉煤灰合成沸石及其脱氮应用研究

发布时间：2019-03-21 11:03

【摘要】：利用壳牌炉粉煤灰水热合成沸石,调节硅铝物质的量比为1.7合成Na A型沸石。通过单因素实验和正交实验优化合成工艺条件,在碱液浓度为1 mol/L、晶化温度为100℃、晶化时间为7 h、液固比(m L/g)为5∶1的条件下合成的Na A型粉煤灰沸石的脱氮能力较强,氨氮去除率达74.62%。分析正交实验结果可知,各因素对Na A型沸石脱氮性能的影响程度:碱液浓度晶化温度液固比晶化时间。对较优产品进行分析,可知其结晶度较大、纯度较高;晶体形貌完整、规则;沸石的孔道排列紧密有序。该Na A型沸石可用于处理氨氮废水。
[Abstract]:Zeolite A was synthesized by hydrothermal synthesis of shell furnace coal ash and Na A zeolite was synthesized by adjusting the ratio of silicon to aluminum to 1.7. Single factor experiment and orthogonal experiment were used to optimize the synthesis conditions. When the concentration of alkali solution was 1 mol/L, the crystallization temperature was 100 鈩，

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