Gasification reactivity and characteristics of three coal chars and two petcokes were investigated in detail. The temperature programmed reaction technique were used to test the gasification reactivity. The characteristics of the various chars were analyzed by XRD, SEM, N₂ adsorption technique and FT-IR. As expect, the coal chars and petcokes showed significantly different gasification reactivity. The reactivity of the two petcokes was much poorer than that of the three coal chars. The gasification reactivity of the coal char increased with the decreasing of coal rank. The gasification reactivity was closely related to the characteristics of samples. It was found that the lower degree of graphitization, less compact surface and more developed pore structure corresponded to higher gasification reactivity of chars. These characteristics of the carbon structure was more favorable to gas diffusion, and hence resulted in high gasification reactivity. In addition, coal char contained more oxygen-containing functional groups and active components such as Ca/Mg/Fe/K/Na compounds, which all had promoting effect on gasification reaction.

详细研究了三种煤焦和两种石油焦的气化反应性和特性。使用程序升温反应技术测试气化反应性。通过XRD，SEM，N ₂分析了各种炭的特性。吸附技术和FT-IR。不出所料，煤焦和焦炭显示出明显不同的气化反应性。这两种石油焦的反应性比三种煤焦的反应性差得多。煤焦的气化反应性随煤级的降低而增加。气化反应性与样品的特性密切相关。发现较低的石墨化程度，较小的致密表面和较发达的孔结构对应于炭的较高的气化反应性。碳结构的这些特征更有利于气体扩散，因此导致高的气化反应性。此外，煤焦含有更多的含氧官能团和活性成分，例如Ca / Mg / Fe / K / Na化合物，