FT-IR 和 SEM 用于煤阶对煤催化加氢气化影响的研究

The effect of coal rank on coal catalytic hydrogasification was studied in a pressured fixed-bedreactor. The catalyst loading , methane release rate and gas composition were compared for coal samples with different ranks. The coal samples and residues were characterized by FT-IR and SEM. The results show that the reactivity of coal decreases with increasing rank of coal without catalyst loading, and the methane release ratefrom low rank coal is divided into two stages obviously. After adding catalyst , it is suggested that the reactivity of Shenfu bituminous coal performs the best, while that of Zunyi anthracite and Yunnan brown coal is poor. Theresults of SEM and FT-IR analysis show that the particle surface of high rank coal is smoother and the structure is more compact, and the strength of vibration intensity of aliphatic and aromatic structure increases with decreasingcoal rank. All of the differences lead to the different reactivity of catalytic hydrogasification among the coal samples.