共沉淀法制备铁锌基中高温煤气脱硫剂
Preparation of zinc ferrite-based sorbent using coprecipitation method for medium-high temperature coal gas desulfurization
查看参考文献11篇
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文摘
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采用共沉淀法制备Cu-Zn-Fe脱硫剂,优化共沉淀制备工艺。固定床实验结果表明,共沉淀溶液中金属离子总浓度为0.6 mol/L,焙烧温度600oC,添加10%活性助剂Cu时所得Cu-Zn-Fe脱硫剂循环脱硫性能最佳,此时ZFDCu10脱硫剂的硫容可达到41.2 g S / 100 g脱硫剂。XRD和SEM对铁锌基脱硫剂的表征结果表明,加入Cu助剂后少量的ZnO、CuO 可阻碍ZnFe_2O_4晶粒聚集,增强铁锌基脱硫剂活性组分的分散性,避免大晶粒的ZnFe_2O_4硫化时形成较多的产物层而降低脱硫剂的利用率。实验结果为制备脱硫性能较好的Cu-Zn-Fe脱硫剂提供了理论依据。 |
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其他语种文摘
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Cu-Zn-Fe regenerable sorbents were prepared and optimized by coprecipitaion method. The performance of sorbents was tested using a fixed-bed reactor, and the results indicated that the sorbent exhibited a high sulfur capacity of 41. 2 g S / 100 g sorbent under conditions : the total metal ion concentration of 0. 6 mol/ L, the calcination temperature of 600oC, and the additive of 10% Cu. The results of XRD and SEM showed that the assistance Cu could prevent the aggregation of ZnFe_2O_4 crystals with the presence of a little ZnO and CuO, improve the dispersion of the active ZnFe_2O_4 component, and avoid the formation of more product layers which would result the lower utilization of the desulfurizer. The experimental results provide a theoretical basis for the preparation of Cu-Zn-Fe sorbents with good desulfurization performance. |
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来源
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环境工程学报
,2014,8(2):659-664 【核心库】
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关键词
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铁锌基
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共沉淀
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高温煤气
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脱硫
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地址
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1.
中国科学院大学, 中国科学院先进能源动力重点实验室, 北京, 100049
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中国科学院工程热物理研究所, 中国科学院先进能源动力重点实验室, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1673-9108 |
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学科
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行业污染、废物处理与综合利用 |
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基金
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江苏省科技项目:煤气干法脱硫剂开发和实验研究
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文献收藏号
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CSCD:5043216
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参考文献 共
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