Influence of Ammonium Dihydrogen Phosphate on Combustion Performance and Ash Characteristics during Combustion of Zhundong Coal

In this study, the co-combustion of Zhundong coal and NH4H2PO4 was investigated in a laboratory-scale tube furnace. The ash fusibility, combustion performance, and ash characteristics were quantified by experimental approaches. This study also used Gibbs free energy theory to analyze the chemical reactions. The results showed that NH4H2PO4 can extend the burning time of coal and reduce combustion intensity. Moreover, NH4H2PO4 significantly...