不同常压流化床煤气化方案的模型预测 Ⅱ. 模型预测及分析

A series of calculations were carried out to explore the effects of various gasification schemes on the performance of fluidized bed coal gasification using the mathematical model previously established by the authors. The gasification performances for five schemes including air, air/H2O, air/CO2, O2/H2O and O2/CO2 blown were studied. The main results show that the better gasification efficiency and higher syngas quality can be obtained from the schemes of air/H2O and O2/H2O. Furthermore, the O2/H2O scheme are more predominant than air/H2O scheme in syngas composition, gasification efficiency and thermal efficiency.