Effects of Water-Soluble Sodium Compounds on the Microstructure and Combustion Performance of Shengli Lignite
Yanjun Wang, Yunfei Zhao, Runxia He, Zhenghao Yan, Xuemei Li, Huacong Zhou, Na Li, Keduan Zhi, Yinmin Song, Yingyue Teng, Quansheng Liu
Abstract
and NaOH treatments. It is deduced that the inhibitory effect on combustion of lignite may be attributed to the stability of the "-COONa" structure, and the relative amount is directly correlated with the inhibitory effect. The XRD/Raman analysis indicated that the stability of the aromatic structure containing "-COOH" increased with the number of "-COONa" structures formed. Additionally, experiments with carboxyl-containing compounds further demonstrated that the number of oxygen-containing functional groups combined with Na was the main reason for the differences in the combustion performance of treated lignite.