航空发动机喷嘴结焦积碳的性质

黄艳斐; 朱岳麟; 熊常健; 潘英杰

航空发动机喷嘴结焦积碳的性质

北京航空航天大学材料科学与工程学院, 北京 100191

基金项目: 中国航空工业集团沈阳发动机设计研究院合作资助项目(2009-2918)

详细信息

作者简介:
黄艳斐(1986-),女,山东临沂人,硕士生,huangyanfei123@126.com.

中图分类号: V 231.2⁺5
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出版历程
- 收稿日期: 2010-03-24
- 网络出版日期: 2011-06-30

Coking properties of aircraft engines- nozzles

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对航空燃料燃烧时会在航空发动机喷嘴处产生大量结焦积碳,影响航空飞行器的飞行安全和使用寿命这一问题,研究了某型航空发动机喷嘴零部件上结焦积碳的生成情况.采用扫描电镜(SEM,Scanning Electron Microscope)、透射电镜(TEM,Transmission Electron Microscopy)、能谱仪(EDS,Energy Disperse Spectroscopy)以及X射线衍射技术(XRD,X-ray Diffraction)对结焦积碳的微观形态和性质进行了分析.结果表明:喷嘴零部件上生成的结焦积碳主要有两种形态:一种是丝状焦,另一种是颗粒状焦.其中,丝状焦只出现在零部件表面较光滑的位置,包括短纤维丝状焦和不定形丝状焦,是由金属催化作用所形成的;其形成与喷嘴零部件的结构、材质及表面粗糙度有关.颗粒状焦则主要集中在活塞表面,包括颗粒团聚状焦和颗粒分散状焦,是由催化作用与燃料热裂解共同作用所形成的.
- 航空发动机 /
- 喷嘴 /
- 结焦积碳
Abstract: In order to solve the problem of air safety and service lives of the aircrafts with a mass of coking, the properties and micro-morphologies of coking which generated on aircrafts engines- nozzles when aircraft fuel combusted were researched. The properties of coking were characterized by the techniques of scanning electron microscopy(SEM), transmission electron microscopy(TEM), energy disperse spectroscopy(EDS) and X-ray diffraction(XRD). It is found that two coking morphologies are produced: one is filamentous coking, and the other is granular coking. On the one hand, the filamentous coking only appears on the smooth surface of machine parts which includes short fiber filamentous coking and amorphous filamentous coking. It is generated by metal catalysis reaction and its formation has close connection with machine parts- structures, materials and surface. On the other hand, the granular coking, including aggregative granular coking and dispersive granular coking, mainly emerges on the surface of nozzles- pistons and it is aroused by the interaction of catalytic reaction and thermal cracking.
- aircraft engines /
- nozzles /
- coking

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参考文献(1)

[1] Chen Alan Y,Dang Lisa.Characterization of supercritical JP-7-s heat transfer and coking properties .AIAA-2002-0005,2002 [2] 王旭全.积碳对发动机性能的影响[J].黑龙江交通科技,2008(5):75-76 Wang Xuquan.Carbon accumulation in the engine as well as its impact on the engine performance[J].Communications Science and Technology Heilongjiang,2008(5):75-76 (in Chinese) [3] 刘红普,唐建生.发动机热浴现象对喷油器积碳的影响[J].农业装备与车辆工程,2007(6):41-43 Liu Hongpu,Tang Jiansheng.Effect of engine "hot-bath" phenomenon to carbon deposit of fuel injector[J].Agricultural Equipment & Vehicle Engineering,2007(6):41-43(in Chinese) [4] 徐学明,殷贤,杨书忠,等.催化裂化油浆系统结焦的分析及优化措施[J].河南化工,2006,23(5):28-29 Xu Xueming,Yin Xian,Yang Shuzhong,et al.Analysis of coke generation in FCCU-S decant oil system and optimization measures[J].Henan Chemical Industry,2006,23(5):28-29(in Chinese) [5] Ren Yan,Mahinpey Nader,Freitag Norman.Kinetic model for the combustion of coke derived at different coking temperatures[J].Energy & Fuels,2007,21:82-87 [6] 陈锐,周彤,顾铭企.某型发动机主燃烧室积碳的排除[J].航空发动机,1996(3):16-20 Chen Rui,Zhou Tong,Gu Mingqi.Elimate the coking of engine-s main chamber[J].Aeroengine,1996(3):16-20 (in Chinese) [7] 幸泽宽.航空发动机积碳清洗剂初探[J].表面工程杂志,1996(2):28-31 Xing Zekuan.Initial studies on cleaning agents for carbon build-up in aero-engines[J].China Surface Engineerign,1996(2):28-31(in Chinese) [8] Wickham D T,Alptekin G O,Engel J R,et al.Additives to reduce coking in endothermic heat exchangers .AIAA-99-2215,1999 [9] Tomaszewicz P,Jackson P R S,Trimm D L,et al.Morphological studies of coking on heat-resistant alloys[J].Journal of Materials Science,1985(20):4035-4044. [10] 谢文杰,方文军,李丹,等.超临界条件下正庚烷的裂解与结焦[J].化学学报,2009,67(15):1759-1764 Xie Wenjie,Fang Wenjun,Li Dan,et al.Pyrolysis and coking of n-Heptane under supercritical conditions[J].Acta Chimica Sinica,2009,67(15):1759-1764 (in Chinese) [11] 李处森,于力,杨远生.三种金属及其氧化物膜在碳氢化合物热裂解反应中结焦行为的研究[J].中国腐蚀与防护学报,2001,21(3):158-166 Li Chusen,Yu Li,Yang Yuansheng.Coking behaviors of three kinds of metals and their oxide films during thermal cracking reaction of hydrocarbons[J].Journal of Chinese Society for Corrosion and Protection,2001,21(3):158-166(in Chinese) [12] Xie Wenjie,Fang Wenjun,Li Dan,et al.Coking of model hydrocarbon fuels under supercritical condition[J].Energy & Fuels,2009,23:2997-3001 [13] Zhang Jianqiang,David J Y.Coking and dusting of Fe-Ni alloys in CO-H₂-H₂O gas mixtures[J].Oxid Met,2008,70:189-211 [14] Jia Jifei,Tanabe Eishi,Wang Peng,et al.Study on the anti-coking nature of Ni/SrTiO₃ catalysts by the CH₄ pyrolysis[J].Catalysis Letters,2001,76(3/4):183-192

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