多喷嘴对置气化炉气体停留时间分布

Residence Time Distribution of the Nozzle-Opposed Gasifier

采用实验测量与数值模拟相结合的方法研究多喷嘴对置气化炉的气体停留时间分布及平均停留时间。数值模拟采用 Fluent 软件获得气化炉内的湍流流动情况,在此基础上运用标量输运方程得到气化炉内的气体停留时间分布函数,实验采用计算机自动控制系统进行停留时间的测量。分别计算了停留时间分布函数及平均停留时间随空气流量的变化.实验与模拟的结果相互吻合。

The residence time distribution and average residence time of the nozzle-opposed gasifier was gained by experiment and numerical simulation. Software Fluent was used to model the flow in the gasifier which was appropriately meshed. The Scalar Transportation Equation was employed to obtain the gas concentration curve at the gasifier outlet. The experiment result was achieved by a computer-controlled system. The result of simulation, which was consistent with that of experiment, showed that the residence time distribution and average residence time was affected by inlet air fluxtion.