Overcoming the Problem of Loss-in-Capacity of Calcium Oxide in CO2 Capture
Overcoming the Problem of Loss-in-Capacity of Calcium Oxide in CO2 Capture
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DOI：
10.1021/ef060258w
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发表时间：
2006-10
期刊：
影响因子：
5.3
通讯作者：
B. Feng;Wenqiang Liu;Xiang Li;H. An
中科院分区：
文献类型：
--
作者：
B. Feng;Wenqiang Liu;Xiang Li;H. An
氧化钙已被确定为零排放发电系统中二氧化碳捕集的最佳候选者之一。然而，它面临着一个众所周知的能力损失问题(即，在经历碳化/脱碳循环后，其捕获二氧化碳的能力下降)。这个问题是采用新技术的潜在障碍。本文提出了一种无容量损失的CaO基吸附剂的制备方法。用该方法制备了一种吸附剂，并在热重分析仪上进行了测试。结果表明，该脱碳剂经过9次碳化/脱碳循环后，利用率可达90%以上。
Calcium oxide has been identified to be one of the best candidates for CO2 capture in zero-emission power-generation systems. However, it suffers a well-known problem of loss-in-capacity (i.e., its capacity of CO2 capture decreases after it undergoes cycles of carbonation/decarbonation). This problem is a potential obstacle to the adoption of the new technologies. This paper proposes a method of fabricating a CaO-based adsorbent without the problem of loss-in-capacity. An adsorbent was fabricated using the method and tested on a thermogravimetric analyzer. It was shown that the sorbent attained a utilization efficiency of more than 90% after 9 cycles of carbonation/decarbonation.