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浙江大学学报(工学版)
能源工程与动力工程     
微型圆管中正庚烷/空气预混催化燃烧特性实验
黄眺,杨卫娟,周俊虎,王智化,刘建忠,岑可法
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Experimental study of premixed n-heptane/air catalytic combustion characteristics in micro-cylindrical tube
HUANG Tiao, YANG Wei juan, ZHOU Jun hu, WANG Zhi hua, LIU Jian zhong, CEN Ke fa
State Key Laboratory of Clean Energy Utilization,Zhejiang University, Hangzhou 310027, China
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摘要:

为了探究微型圆管中正庚烷/空气预混催化燃烧特性的问题,在微型石英玻璃圆管内进行实验,采用填充床布置Pt催化剂,以Ce0-8Zr0-2O2为载体,研究催化活性、燃烧器壁温、最高温度、转化率、壁面散热等特性.催化活性实验测得正庚烷在当量比Φ=0.5的条件下的着火温度为452 K,且稳定的催化燃烧可以在低于500 K温度下发生.在自稳燃烧中,随着雷诺数增大,壁面最高温度逐渐向下游移动,且高温区扩大,在Φ=0.5和Φ=1这2种条件下燃烧器外壁最高温度均在Re=125处发生明显转折.研究结果表明,在雷诺数相同的条件下,Φ=1的工况相对于Φ=0.5的工况壁面最高温度和转化率更高、散热量占输入热量的比例更小,Φ=1的工况更适于实际燃烧器的应用.

Abstract:

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.

出版日期: 2016-11-01
:  TK 16  
基金资助:

 国家自然科学基金资助项目(51336010);中央高校基本科研业务费专项资金资助项目(2016FZA4011).

通讯作者: 杨卫娟,女,副教授.     E-mail: yangwj@zju.edu.cn
作者简介: 黄眺(1989—),男,硕士生,从事微尺度燃烧的研究. E-mail:21427045@zju.edu.cn
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引用本文:

黄眺,杨卫娟,周俊虎,王智化,刘建忠,岑可法. 微型圆管中正庚烷/空气预混催化燃烧特性实验[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.11.003.

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), 10.3785/j.issn.1008-973X.2016.11.003.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.11.003        http://www.zjujournals.com/eng/CN/Y2016/V50/I11/2058

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