正丁烷/空气在微反应器内的气相与催化反应

Gas Phase and Catalytic Reactions of n-Butane/Air in Micro Combustor

本文通过实验研究了富燃的正丁烷/空气混合物在有、无Pt催化剂蜂窝陶瓷反应器内的气相与表面反应过程。实验结果表明,根据反应温度的不同,正丁烷/空气混合物的催化氧化过程分为三个区域:低温的表面催化反应控制区、高温的气相反应控制区和中温的催化/气相反应共同控制区。在表面催化反应控制区,即使是富燃料混合物,其反应产物也只有完全氧化产物,而不存在CO等不完全氧化产物。在达到气相着火后的气相反应控制区,混合物主要发生部分氧化和热裂解反应过程,表面催化反应的影响很小,反应产物主要是部分氧化产物和裂解产物CO,H_2、CH_4、C_2H_4、C_3H_6等。

Gas phase and catalytic reactions of n-butane/air mixture in the honeycomb ceramic reactor with and without catalyst was experimentally studied.The experimental results show,that according to different reaction temperatures,the catalytic oxidation process is divided into three regions：low temperature zone controlled by catalytic reaction,high temperature zone controlled by gas phase reaction and medium temperature zone controlled by both catalytic and gas-phase reactions.In the zone controlled by catalytic reaction,only complete oxidation products were detected even for rich fuel mixture,instead of incomplete oxidation products such as CO.In the zone controlled by gas phase reaction,the catalytic reaction had little effect,CO.C2H4,C2H4 and C3H6 were dominant products by partial oxidation and pyrolysis.