Ce0-8Zr0-2O2 supported Pt catalyst was arranged as packed-bed in micro-cylindrical quart tube to investigate premixed n-heptane/air catalytic combustion characteristics, including catalytic activity, combustor wall temperature, maximum tube wall temperature, conversion rate and surface heat loss. Catalytic activity experimental results show that ignition temperature of n-heptane in Φ=0.5 is 452 K, and catalytic combustion can be achieved under 500 K. In self-sustaining experiment, maximum wall temperature shifts downstream and high temperature zone expands. Maximum tube wall temperature of Φ=0.5 and 1 experience sharp drop in Re=125. Results indicate that When Re is fixed, working condition of Φ=1 acquires higher maximum wall temperature and conversion rate, lower surface heat loss than that of Φ=0.5, which means working condition of Φ=1 is more suitable in micro-combustors．
HUANG Tiao, YANG Wei juan, ZHOU Jun hu, WANG Zhi hua, LIU Jian zhong, CEN Ke fa. Experimental study of premixed n-heptane/air catalytic combustion characteristics in micro-cylindrical tube. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(11): 2058-2063.
［1］ JU Y G, MARUTA K. Microscale combustion: Technology development and fundamental research ［J］. Progress in Energy and Combustion Science, 2011, 37(6): 669-715．
［2］ KAISARE N S, VLACHOS D G. A review on microcombustion: Fundamentals, devices and applications ［J］. Progress in Energy and Combustion Science, 2012, 38(3): 321-359．
［3］ YANG W M, CHOU S K, SHU C, et al. Microscale combustion research for application to micro thermophotovoltaic systems ［J］. Energy Conversion and Management, 2003, 44(16): 2625-2634．
［4］ GHAZVINI M, NARAYANAN V. A microscale combustor recuperator and oil heat exchangerdesign and thermofluidic characterization ［J］. International Journal of Heat and Mass Transfer, 2013, 64(7): 881002．
［5］ BAGHERI G, HOSSEINI S E. Impacts of inner/outer reactor heat recirculation on the characteristic of microscale combustion system ［J］. Energy Conversion and Management, 2015, 105(11): 45-53．
［6］ DENG C, YANG W J, ZHOU J H, et al. Catalytic combustion of methane, methanol, and ethanol in microscale combustors with Pt/ZSM5 packed beds ［J］. Fuel, 2015, 150(6): 339-346．
［7］ YANG W M, CHOU S K, SHU C, et al. Combustion in microcylindrical combustors with and without a backward facing step ［J］. Applied Thermal Engineering, 2002, 22(16): 1777-1787．
［8］ 张永生, 周俊虎, 杨卫娟, 等. 微燃烧稳定性分析和微细管道燃烧实验研究［J］. 浙江大学学报：工学版, 2006, 40(7): 1178-1182．
ZHANG Yongsheng, ZHOU Junhu, YANG Weijuan, et al. Burning stability analysis of microcombustion and experimental research of combustion in microscale tube ［J］. Journal of Zhejiang University: Engineering Science, 2006, 40(7): 1178-1182．
［9］ 杨卫娟, 周俊虎, 汪洋, 等. 微尺度燃烧中的温度及热回流分布［J］. 中国电机工程学报, 2010, 30(20): 28-32．
YANG Weijuan, ZHOU Junhu, WANG Yang, et al. Temperature and heatrecirculation distribution in microscale combustion ［J］. Proceedings of the CSEE, 2010, 30(20): 28-32．
［10］ GHAZVINI M, NARAYANAN V. A microscale combustor recuperator and oil heat exchangerdesign and thermofluidic characterization ［J］. International Journal of Heat and Mass Transfer, 2013, 64(7): 881002．
［11］ MARUTA K, TAKEDA K, AHN J, et al. Extinction limits of catalytic combustion in microchannels ［J］. Proceedings of the Combustion Institute, 2002, 29(1): 957-963．
［12］ CHAO Y C, CHEN G B, HSU C J, et al. Operational characteristics of catalytic combustion in a platinum microtube ［J］. Combustion Science and Technology, 2004, 176(10): 1755-1777．
［13］ 潘剑锋, 范宝伟, 吴庆瑞, 等. 微尺度下氢氧预混合气催化燃烧的研究［J］. 机械工程学报, 2011, 47(24): 111-116．
PAN Jianfeng, FAN Baowei, WU Qingrui, et al. Study on catalytic combustion of premixed hydrogen and oxygen in the microscale ［J］. Journal of Mechanical Engineering, 2011, 47(24): 111-116．
［14］ YANG W J, DENG C, ZHOU J H, et al. Mesoscale combustion of ethanol and dimethyl ether over Pt/ZSM5: Differences in combustion characteristics and catalyst deactivation ［J］. Fuel, 2016, 165(2): 19．
［15］ ZHONG W H, LIU Y X, ZHANG D J. A comparative theoretical study for the methanol dehydrogenation to CO over Pt3 and PtAu2 clusters ［J］. Journal of Molecular Modeling, 2012, 18(7): 3051-3060．
［16］ YAMAMOTO A, OSHIBE H, NAKAMURA H, et al. Stabilized threestage oxidation of gaseous nheptane/air mixture in a micro flow reactor with a controlled temperature profile ［J］. Proceedings of the Combustion Institute, 2011, 33: 3259-3266．
［17］ LI J W, HUANG J H, YAN M, et al. Experimental study of n-heptane/air combustion in mesoscale burners with porous media ［J］. Experimental Thermal and Fluid Science, 2014, 52: 47-58．
［18］ 姚荣, 李军伟, 邱佐祯, 等. 正庚烷液滴在微细直管中的燃烧特性实验［J］. 航空动力学报, 2015, 30(9): 2129-2139．
YAO Rong, LI Junwei, QIU Zuozhen, et al. Experiment on combustion characteristics of nheptane droplets in microtube ［J］. Journal of Aerospace Power, 2015, 30(9): 2129-2139．
［19］ HAMOULE A, PEYROVI M H, RASHIDZADEH M, et al. Catalytic reforming of nheptane over Pt/AlHMS catalysts ［J］. Catalysis Communications, 2011, 16(1): 234239．
［20］ BIJJULA K, VLACHOS D G. Catalytic ignition and autothermal combustion of JP-8 and its surrogates over a Pt/γ-Al2O3 catalyst ［J］. Proceedings of the Combustion Institute, 2011, 33: 1801-1807．
［21］ 邓尘, 杨卫娟, 王威, 等. 微型缩放喷管中氢气/空气预混燃烧实验研究［J］. 中国电机工程学报, 2014, 34(2): 260-265．
DENG Chen, YANG Weijuan, WANG Wei, et al. Experiments on H2/air premixed combustion in a micro laval nozzle ［J］. Proceedings of the CSEE, 2014, 34(2): 260-265．
［22］ 焦健, 钟北京. 甲烷微通道内催化燃烧有关转化率的讨论［J］. 工程热物理学报, 2007, 28(2): 357-359．
JIAO Jian, ZHONG Beijing. Discussion on CH4 conversion ratio of catalytic combustion in microtubes ［J］. Journal of Engineering Thermophysics, 2007, 28(2): 357-359．
［23］ LI J W, ZHONG B J. Experimental investigation on heat loss and combustion in methane/oxygen microtube combustor ［J］. Applied Thermal Engineering, 2008, 28(7):707-716．
［24］ ZHONG B J, YU Y W, YANG F. Effect of catalyst length and hydrogen addition on the combustion characteristics of nbutane in a catalytic swissroll combustor ［J］. Combustion Science and Technology, 2015, 187(10): 1504-1519．
［25］ 周俊虎, 汪洋, 杨卫娟, 等. 燃烧器材料的热物理性质对微尺度催化燃烧的影响［J］. 中国电机工程学报, 2010, 30(5): 11-16．
ZHOU Junhu, WANG Yang, YANG Weijuan, et al. Effect of thermal property of materials on microscale catalytic combustion for the micro combustor ［J］. Proceedings of the CSEE, 2010, 30(5): 11-16．
