| 壳牌炉粉煤灰合成沸石及其脱氮应用研究 |
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| 引用本文： | 王宝庆,张端峰,王 丹,廖耀华,刘振锋,任保增. 壳牌炉粉煤灰合成沸石及其脱氮应用研究[J]. 无机盐工业, 2016, 48(5): 51 |
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| 作者姓名： | 王宝庆 张端峰 王 丹 廖耀华 刘振锋 任保增 |
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| 作者单位： | 郑州大学化工与能源学院，河南郑州 450001 |
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| 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NaA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（mL/g）为5∶1的条件下合成的NaA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NaA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NaA型沸石可用于处理氨氮废水。
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| 关 键 词： | 壳牌炉粉煤灰 水热合成 沸石 氨氮废水 |
Study on zeolite synthesized from shell furnace coal fly ash and its ammonia removal application |
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| WANG Bao-Qing,ZHANG Duan-Feng,WANG Dan,LIAO Yao-Hua,LIU Zhen-Feng,REN Bao-Zeng. Study on zeolite synthesized from shell furnace coal fly ash and its ammonia removal application[J]. Inorganic Chemicals Industry, 2016, 48(5): 51 |
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| Authors: | WANG Bao-Qing ZHANG Duan-Feng WANG Dan LIAO Yao-Hua LIU Zhen-Feng REN Bao-Zeng |
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| Affiliation: | School of Chemical Engineering and Energy，Zhengzhou University，Zhengzhou 450001，China |
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| Abstract: | The zeolite was synthesized by the hydrothermal method and with shell furnace coal fly ash.NaA zeolite was pre-pared with 1.7 of Si/Al（amount-of-substance ratio） and synthetic conditions were optimized by single factor experiment andorthogonal experiments.The optimum conditions were determined to be 1 mol/L of NaOH，100 ℃ of crystallization tempera-ture，7 h of crystallization time，and 5∶1（mL/g） of liquid-to-solid ratio.The denitrification ability of the synthesized NaA zeo-lite under these conditions was the best and the removal rate of ammonia nitrogen reached 74.62%.The orthogonal experiment results showed that the influence of different factors on denitrification performance of NaA zeolite was alkali concentration> crystallization temperature>liquid-to-solid ratio>crystallization time.Results showed that the product′s crystallinity was large and its purity was high.Crystal morphology was complete and inerratic.The pore arrangement of zeolite was in order and closely.It can be used in the treatment of ammonia nitrogen wastewater. |
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| Keywords: | shell furnace coal fly ash hydrothermal synthesis zeolite ammonia nitrogen wastewater |
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