Effects of dispersion of sodium ions on catalytic Fujian anthracite gasification

With sodium carbonate and sodium dodecyl benzene sulfonate used as the catalysts respectively, the steam gasification kinetic experiments of Fujian Jianxin and Chuanghong anthracites were conducted in an atmospheric thermal balance, and the effects of catalyst loading amount(0%~15%) and gasification temperature (850~950 ℃) were examined. The experimental data were fitted by shrinking core model. Meanwhile, the kinetic parameters were obtained. The results show that both sodium carbonate and sodium dodecyl benzene sulfonate can significantly increase the gasification rate and reduce the activation energy of gasification reaction of the two anthracite samples. Because the loading process of catalyst LAS can make the sodium ions being dispersed more evenly, even with low concentration of Na⁺, the carbon conversion can be improved significantly and the gasification reaction time is reduced too. The experiments prove that it is a new way for the application and development of LAS in catalytic steam gasification of Fujian anthracite.