航空发动机催化燃烧技术发展趋势

Development of catalytic combustion technology for aero engine

针对民用航空发动机污染物排放的现状,介绍了催化燃烧技术在航空发动机上应用的发展趋势。基于污染物生成机理及控制原理阐述了催化燃烧的污染物控制方法,回顾了催化燃烧技术的发展现状,并分析了催化燃烧技术在民用航空发动机上应用的可行性。采用催化燃烧技术的催化-预混分级燃烧室已经进行了常压和加压的实验测试,其排放达到了超低排放水平,证明了催化燃烧室的发展潜力。要实现催化燃烧技术在民用航空发动机上的应用还需要在地面试验台上对各种运行工况进行测试,并建立可预测催化剂性能的数学模型,对燃烧室内的混合、流动、燃烧及他们之间的相互作用开展深入的研究,建立可对催化剂老化性能进行预测的数值模型。

The development of the catalytic combustion technology for aero engine has been introduced aimed at the pollutant emission status. The pollutant emission control method of catalytic combustion was expounded based on the pollutant formation mechanism and control principle. The current situation of the catalytic combustion technology development has been reviewed, and the feasibility of the application of catalytic combustion technology to civil aviation engine has been analyzed. Tests on staged combustors using catalytic combustion technology have been carded out at atmospheric and pressurized cases, whose emissions reached the ultra low emission levels, proving the development potential of catalytic combustion chamber. To realize the application of catalytic combustion technology to civil aviation engine, tests on a variety of operating conditions on the ground test bench are needed, and a mathematical model that can predict the performance of catalysts established. The in-depth research on the mixture, flow, combustion and the interaction between them should be conducted, and a numerical model based on the prediction of the catalyst aging should be built.