| 钙基CO2吸收剂的锆改性研究 |
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| 引用本文： | 黄绍兰,童华,王京刚.钙基CO2吸收剂的锆改性研究[J].环境科学与技术,2011,34(2):85-90. |
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| 作者姓名： | 黄绍兰 童华 王京刚 |
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| 作者单位： | 北京化工大学环境工程系,北京,100029 |
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| 摘 要： | 实验采用共沉淀法以Ca(Ac)2·H2O作为CaO前驱体,经NH3·H2O沉淀、静置、醇洗、烘干制备锆改性钙基高温二氧化碳吸收剂,并考察锆添加量、反应温度及时间、CO2分压等因素列其吸收性能的影响.经锆改性后,吸收剂中掺杂ZrO2形成了良好的介孔结构,可维持较高的碳酸化转化率,提高吸收剂的循环热稳定性.测试结果表明,当...
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| 关 键 词： | 二氧化锆 改性 钙基吸收剂 二氧化碳 |
Preparation and Property of Zr-doped Calcium Oxide for Carbon Dioxide Absorption at High Temperature |
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| HUANG Shao-lan,TONG Hua,WANG Jing-gang.Preparation and Property of Zr-doped Calcium Oxide for Carbon Dioxide Absorption at High Temperature[J].Environmental Science and Technology,2011,34(2):85-90. |
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| Authors: | HUANG Shao-lan TONG Hua WANG Jing-gang |
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| Institution: | HUANG Shao-lan,TONG Hua,WANG Jing-gang(Department of Environmental Engineering,Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | Zirconium modified calcium oxide for high temperature CO2 absorption was prepared by co-precipitation method with Ca(Ac)2·H2O as calcium precursor,following steps of precipitation with NH3.H2O,alcohol washing,drying and calcination.Influences of sorbent preparation conditions on the sorbent structure and absorption performance were investigated with absorption activity evaluation,XRD,SEM and TG.Experiments showed that the doping of Zr in the sorbent was benefit in maintaining the mesoporous structure of CaO,leading a high conversion rate of carbonation and enhancing the thermal stability of the sorbent.Under the experimental conditions of Zr/Ca of 1/40,CO2 partial pressure 30%,carbonation temperature of 650℃,reaction time 30min and regeneration at 800℃ for 30min,the maximum conversion rate of sorption reached 82.6%,and remained 73.6% after 10 cycles,and no severe sintering was observed. |
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| Keywords: | zirconia modified calcium-based sorbent carbon dioxide |
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