| CO-超临界水条件下硅灰石矿化隔离CO2实验 |
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| 引用本文： | 晏恒,赵永椿,张军营,郑楚光.CO-超临界水条件下硅灰石矿化隔离CO2实验[J].华中科技大学学报(自然科学版),2011(6):121-124,128. |
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| 作者姓名： | 晏恒 赵永椿 张军营 郑楚光 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(40972102,50721005); 国家重点基础研究发展计划资助项目(2010CB227003) |
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| 摘 要： | 对CO-超临界水制氢条件下硅灰石直接矿物碳酸化隔离制氢过程中产生的CO2进行了实验研究,考察了温度、压力及硅灰石的加入等对反应的影响.结果表明:硅灰石可以在CO-超临界水条件下对反应过程中生成的CO2进行矿物碳酸化固定.温度和CO初压的增加,可以促进H2产率的提高,同时也可以增加硅灰石的矿化效率;硅灰石的加入,对CO与超临界水反应也有一定的促进作用.在4MPa CO初压,420℃和10g硅灰石样品的条件下,产物气体中H2体积分数最高,为12.2%;在6MPa CO初压,400℃和10g硅灰石样品的条件下得到29.9%的矿石最高矿化效率.
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| 关 键 词： | CO2 CO-超临界水 矿物碳酸化 硅灰石 隔离 |
CO_2 sequestration by wollastonite mineral carbonation in CO-supercritical water system |
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| Yan Heng Zhao Yongchun Zhang Junying Zheng Chuguang.CO_2 sequestration by wollastonite mineral carbonation in CO-supercritical water system[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(6):121-124,128. |
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| Authors: | Yan Heng Zhao Yongchun Zhang Junying Zheng Chuguang |
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| Institution: | Yan Heng Zhao Yongchun Zhang Junying Zheng Chuguang(State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Mineral carbonation,i.e.,carbonation of alkaline silicate Ca/Mg minerals,analogous to natural weathering processes,was a possible technology for reduction of CO2 emissions to the atmosphere.Alkaline silicate Ca-rich minerals,wollastonite,was used as a feedstock for CO2 mineral carbonation sequestration in the CO-supercritical water system.A series of experiments were carried out to investigate the effects of temperature,CO initial pressure and addition of wollastonite.The experimental results show that woll... |
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| Keywords: | CO2 CO-supercritical water mineral carbonation wollastonite sequestration |
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