化工学报2016，Vol.67Issue(11)：4795-4801,7.DOI:10.11949/j.issn.0438-1157.20160847
羧酸钠对准东煤热解过程的影响
Effect of sodium carboxylate on pyrolysis of Zhundong coal (H-form coal)
摘要
Abstract
A Na+-exchanged coal (Na-form coal) containing sodium carboxylate, was prepared by ion exchange of an acid-washed Zhunong coal (H-form coal). A H-form-1 coal, prepared from the acid-washing of Na-form coal, was set as a blank. Pyrolysis of the two samples was performed in a fixed-bed reactor. The portable infrared gas analyzer, FTIR and thermogravimetric analyzer were employed to investigate the composition and yields of volatiles, the decomposed components, the variation of functional groups and the char reactivity. It shows that, in presence of sodium carboxylate the production rates of volatiles and release of CH4, C2H4and C2H6were inhibited when temperature was above 600℃, while the production of CO was promoted at temperature above 800℃. Besides, the tar yield is remarkably inhibited at 700℃. The char reactivity was significantly improved due to sodium carboxylate especially at 700℃. The presence of sodium carboxylate in coal greatly affects the variation of functional groups during the pyrolysis.关键词
准东煤/离子交换/热解/反应/活性Key words
Zhundong coal/ion exchange/pyrolysis/reaction/reactivity分类
化学化工引用本文复制引用
刘辉,赵登,姜雷宵,许连飞,闫永宏,吴东阳,高继慧,吴少华..羧酸钠对准东煤热解过程的影响[J].化工学报,2016,67(11):4795-4801,7.基金项目
国家自然科学基金项目（51476045）。@@@@Foundation item：supported by the National Natural Science Foundation of China (51476045) （51476045）
