Effects of Adding Different Proportions of H<sub>2</sub> to the Simulated Hydrogen‐Rich Blast Furnace
Xiangyu Fan, Chao Li, Mingdeng Wang, Yang Liu, Yifei Feng, Yang Liu, Xiangyun Zhong, Guozhong Xu, Yaru Zhang, Yajie Zheng, Bin Bai, Jinfeng Bai
Abstract
Abstract The volume‐fraction changes of CO 2 and H 2 O after adding different proportions of H 2 to the hydrogen‐rich blast furnace were simulated by thermodynamic calculations to evaluate the effects of H 2 on coke gasification in a blast furnace. Thermodynamic calculations indicated that the H 2 O content in the mixed gas gradually increased with higher H 2 content. The coke gasification kinetics effective diffusion coefficient D e and interfacial reaction rate constant k + of the coke gasification reaction improved with higher H 2 content. In addition, the reactivity of cokes enhanced and the coke strength after reaction decreased with higher H 2 content. Mercury porosimeter experiments demonstrated that the coke gasification reaction mainly occurred on the surface.