期刊
THERMOCHIMICA ACTA
卷 716, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.tca.2022.179317
关键词
Char gasification; Activation energy; Calcium deactivation
资金
- National Natural Science Foundation of China [51976112]
- Special Project Fund of Taishan Scholar of Shandong Province [tsqn202103066]
This study investigates the CO2 gasification of calcium-rich lignite and coffee char through thermogravimetry analysis. The effects of calcium deactivation on activation energy are assessed, and the results show that calcium deactivation increases the activation energy significantly.
CO2 gasification of calcium-rich lignite and coffee char are conducted via thermogravimetry analysis (TGA) at 1098???1173 K and 0.025???0.1 MPa CO2. The effects of calcium deactivation on determining the activation energy are assessed in detail. Results reveal that the calcium deactivation increases the value of the activation energy. The activation energies of the lignite char (LC) and coffee grounds char (CGC) with Ca deactivation are signif-icantly increased compared with those of CGC and LC without Ca deactivation, and the relative errors are be-tween 4.5% and 23.4%. To measure the activation energy without Ca deactivation in char-CO2 gasification, the lower CO2 pressures and higher temperatures should be selected according to the equilibrium regularity of CO2 over CaCO3.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据