工程科学学报2017，Vol.39Issue(6)：823-829,7.DOI:10.13374/j.issn2095-9389.2017.06.002
基于过渡金属氧化物载氧体的煤矿通风瓦斯处理性能
Performance of ventilation air methane combustion over transition metal oxide oxygen carriers
摘要
Abstract
The performance of combustion of ventilation air methane ( VAM) over transition metal oxide oxygen carriers was stud-ied through experiments with using tube reactors. The results show that the activity of activated oxygen carriers in converting CH4 to CO2 is as follows:CuO60/γ-Al2 O3 >NiO60/γ-Al2 O3 >Fe2 O360/γ-Al2 O3 . CH4 conversion based on CuO60/γ-Al2 O3 decreases with increasing gas hourly space velocity, but increases with increasing bed temperature and CuO loading. The lower the initial CH4 con-centration of ventilation air methane, the lower is the temperature for the CH4 conversion of 90%. There are catalytic combustion mechanisms and chemical-looping combustion mechanisms for CH4 combustion over both CuO60/γ-Al2 O3 , for which dispersion of the active component is low but loading is high, and CuO5. 5/γ-Al2 O3 , for which dispersion of the active component is high but loading is low. There exists a maximum for CH4 conversion based on the catalytic combustion mechanism at some temperatures, and when the bed temperature is higher than this temperature, the contribution of chemical-looping combustion is greater than that of catalytic com-bustion. The initial activity of CuO5. 5/γ-Al2 O3 is higher than that of CuO60/γ-Al2 O3 , while the stability of CuO60/γ-Al2 O3 activity is better than that of CuO5. 5/γ-Al2 O3 activity under the same conditions.关键词
通风瓦斯/甲烷转化率/载氧体/化学链燃烧/催化燃烧Key words
ventilation air methane/methane conversion/oxygen carrier/chemical-looping combustion/catalytic combustion分类
资源环境引用本文复制引用
吴举茂,苏庆泉,武永健,杨海洋..基于过渡金属氧化物载氧体的煤矿通风瓦斯处理性能[J].工程科学学报,2017,39(6):823-829,7.基金项目
北京市科技基金资助项目(Z131100005613045) （Z131100005613045）
