Understanding the Sulfation Pattern of CaO-Based Sorbents in a Novel Process for Sequential CO2 and SO2 Capture
Understanding the Sulfation Pattern of CaO-Based Sorbents in a Novel Process for Sequential CO2 and SO2 Capture
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了解连续捕获 CO2 和 SO2 的新工艺中 CaO 基吸附剂的硫酸化模式
DOI：
10.1021/acs.iecr.6b02827
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发表时间：
2016-09
影响因子：
4.2
通讯作者：
Zhang Li
中科院分区：
文献类型：
--
作者：
He Donglin;Shao Yan;Qin Changlei;Pu Ge;Ran Jingyu;Zhang Li
The CaO-based sorbent is considered to be a potential candidate for high-temperature CO2 capture. However, its application is limited by the loss in CO2 sorption activity with increasing number of calcium looping (CaL) cycles, which leads to vast spent sorbents with a potential for pollution. To solve the problem, the optimized utilization of CaO-based sorbents through a novel process to achieve sequential CO2 capture and SO2 retention is studied in the work, and the sulfation pattern of spent CaO coming from CaL process under different variables is investigated. It is observed that spent CaO-based sorbents experiencing dozens of carbonation/calcination cycles under severe CaL conditions have even a better capacity for SO2 capture than the fresh CaO. By use of a combination of testing approaches, the phenomenon is revealed to be related to the variation of the sulfation pattern of CaL-spent CaO, and pores with a diameter of approximately 60–100 nm in the material are thought to be the key factor determini...
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影响因子：
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作者：
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通讯作者：
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