化工进展2017，Vol.36Issue(6)：2325-2330,6.DOI:10.16085/j.issn.1000-6613.2017.06.051
丙酸改性提高电石渣捕集CO2性能的动力学分析
Kinetic analysis on CO2 capture performance of carbide slag modified by propionic acid
摘要
Abstract
The CO2 capture capacity of carbide slag modified by propionic acid was investigated in a dual fixed-bed reactor and a TGA. The result shows that modification by propionic acid can improve the cyclic carbonation conversion of carbide slag and delay the decays of carbonation conversion with number of cycles. An ion reactive adsorption model was employed to describe the mechanism why modification by propionic acid can improve the CO2 capture capacity of carbide slag. With the same number of cycles,the values ofk andXu of carbide slag modified by propionic acid are higher than those without modification,while the value of t0 is shorter. The modified carbide slag shows higher carbonation rate and can achieve a relative higher carbonation conversion with a shorter time. Modification by propionic acid improves the microstructure of the carbide slag after calcination. The pore area and pore volume in the range of 20—100nm are increased and the resistance of diffusion is reduced. That's why the modified carbide slag shows favorable kinetics parameters superior to carbide slag without modification.关键词
钙循环/电石渣/改性/CO2捕集/动力学Key words
calcium looping process/carbide slag/modification/CO2 capture/kinetics分类
资源环境引用本文复制引用
孙荣岳,叶江明,毕小龙,陈凌海..丙酸改性提高电石渣捕集CO2性能的动力学分析[J].化工进展,2017,36(6):2325-2330,6.基金项目
江苏省高校自然科学基金(16KJB470005,14KJD470003)及南京工程学院引进人才科研启动基金(YKJ201410)项目. （16KJB470005,14KJD470003）
