Attrition Study of Cement-Supported Biomass-Activated Calcium Sorbents for CO2 Capture
Attrition Study of Cement-Supported Biomass-Activated Calcium Sorbents for CO2 Capture
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DOI：
10.1021/acs.iecr.6b02393
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发表时间：
2016-08
影响因子：
4.2
通讯作者：
L. Duan;Zhijian Yu;M. Erans;Yingjie Li;V. Manović;E. Anthony
中科院分区：
文献类型：
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作者：
L. Duan;Zhijian Yu;M. Erans;Yingjie Li;V. Manović;E. Anthony
最近报道了生物质改性的钙基吸附剂的二氧化碳容量增强，但也观察到了不希望的耐磨性。本研究在造粒过程中使用水泥作为生物质活化钙吸附剂的载体，以改善机械阻力差的问题。在专注于冲击破碎的设备中进行了磨损测试，以评估生物质添加和水泥支撑如何影响钙循环过程中的颗粒强度。结果表明，生物质的添加会损害机械强度，而水泥载体可以改善机械强度，这反映在经历了煅烧和多次煅烧/碳化循环的颗粒撞击后的破碎概率和尺寸变化上。较大尺寸的颗粒遭受更强烈的磨损。吸附剂的机械强度在高温煅烧后显着下降，但在碳化后增加。经过多次循环后，颗粒的机械强度大大增强...
An enhanced CO2 capacity was reported recently for biomass-modified Ca-based sorbent, but undesired attrition resistance was also observed. In this study, cement was used as a support for biomass-activated calcium sorbent during the granulation process to improve the poor mechanical resistance. Attrition tests were carried out in an apparatus focused on impact breakage to evaluate how the biomass addition and cement support influence the particle strength during Ca looping. The results showed that biomass addition impairs the mechanical strength and that a cement support can improve it, as reflected in the breakage probability and size change after impact of pellets that had experienced calcination and multiple calcination/carbonation cycles. Larger-sized particles suffered more intense attrition. The mechanical strength of the sorbents declined significantly after higher-temperature calcination but increased after carbonation. After multiple cycles, the mechanical strength of particles was greatly enhanc...