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ZongHao Zhang

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Journal article
Published: 24 January 2019 in Processes
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The application of circulating fluidized bed technology in calcium looping (CaL) requires that CaO-based sorbents should be manufactured in the form of spherical pellets. However, the pelletization of powdered sorbents is always hampered by the problem that the mechanical strength of sorbents is improved at the cost of loss in CO2 sorption performance. To promote both the CO2 sorption and anti-attrition performance, in this work, four kinds of pore-forming materials were screened and utilized to prepare sorbent pellets via the extrusion-spheronization process. In addition, impacts of the additional content of pore-forming material and their particle sizes were also investigated comprehensively. It was found that the addition of 5 wt.% polyethylene possesses the highest CO2 capture capacity (0.155 g-CO2/g-sorbent in the 25th cycle) and mechanical performance of 4.0 N after high-temperature calcination, which were about 14% higher and 25% improved, compared to pure calcium hydrate pellets. The smaller particle size of pore-forming material was observed to lead to a better performance in CO2 sorption, while for mechanical performance, there was an optimal size for the pore-former used.

ACS Style

ZongHao Zhang; Shuai Pi; Donglin He; Changlei Qin; Jingyu Ran. Investigation of Pore-Formers to Modify Extrusion-Spheronized CaO-Based Pellets for CO2 Capture. Processes 2019, 7, 62 .

AMA Style

ZongHao Zhang, Shuai Pi, Donglin He, Changlei Qin, Jingyu Ran. Investigation of Pore-Formers to Modify Extrusion-Spheronized CaO-Based Pellets for CO2 Capture. Processes. 2019; 7 (2):62.

Chicago/Turabian Style

ZongHao Zhang; Shuai Pi; Donglin He; Changlei Qin; Jingyu Ran. 2019. "Investigation of Pore-Formers to Modify Extrusion-Spheronized CaO-Based Pellets for CO2 Capture." Processes 7, no. 2: 62.