基于CO-DAC的合成气反应极限分析

Reaction Limit Analysis of Syngas Based on CO-DAC Method

使用基于路径通量分析(PFA)的自相关动态自适应化学法(CO-DAC),计算了合成气火焰的反应极限变化.计算模型验证表明,本研究的计算程序和CO-DAC简化方法可以准确地模拟层流火焰的传播过程,使用CO-DAC简化方法可以明显降低化学反应计算时间.然后计算了合成气火焰的反应极限变化,结果表明,合成气中CO含量的增加使火焰的反应极限变化趋于平缓,3个反应极限之间的过渡向低压方向移动,并且CO-DAC简化方法可以准确模拟合成气的反应极限变化特性.

Correlated dynamic adaptive chemistry(CO-DAC)method based on path flux analysis(PFA)was usedto simulate the variation of reaction limits of syngas flames.The computational model was validated,and the resultshows that laminar flame propagation can be simulated accurately by current computational program and CODACreduction method,and that the computational time can be reduced significantly by using CO-DACreduction.Then the variation of syngas reaction limits was investigated.The results show that when the content ofCO increases,the variation of syngas reaction limits tends to be flat,the transitions between reaction limits moveto lower pressures,and CO-DAC reduction can simulate syngas reaction limits accurately