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J4  2013, Vol. 47 Issue (11): 1987-1991    DOI: 10.3785/j.issn.1008-973X.2013.11.016
    
Study on thermal oxidation characteristics and kinetics of boron-based fuel-rich in different atmosphere
ZHOU Hua, ZHANG Yan-wei,LI He-ping, WANG Yang, LIU Jian-zhong, ZHOU Jun-hu, CEN Ke-fa
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China      
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Abstract  

The influence of different amorphous on the thermal oxidation characteristics of boron-based fuel-rich was studied by TG-DTG and DSC experiments. Oxidative induction temperature of the fuel under different atmosphere was obtained by TG-DTG tangent method. The experiment results show that the ignition temperature of fuel were not affected by different amorphous at 50~650℃, Increasing the oxygen concentration can improve the heat release of oxidation. Oxidative induction temperature of boron in the fuel in air, O2 and CO2 is 705.3,710.8℃ and 723.4 ℃ respectively at 650~1 100℃, the fuel generated little BN in N2, and didnt react in Ar. Increasing the oxygen concentration can reduce the oxidative induction temperature of boron in the fuel, speed up the combustion reaction and improve the efficiency. The single-curve model of Satava-Sestak integral method was adopted to calculate the kinetic parameters of the thermal reaction of fuel under different atmosphere at 650~1 100℃.



Published: 01 November 2013
CLC:  O 643.1  
Cite this article:

ZHOU Hua, ZHANG Yan-wei,LI He-ping, WANG Yang, LIU Jian-zhong, ZHOU Jun-hu, CEN. Study on thermal oxidation characteristics and kinetics of boron-based fuel-rich in different atmosphere. J4, 2013, 47(11): 1987-1991.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2013.11.016     OR     http://www.zjujournals.com/eng/Y2013/V47/I11/1987


不同气氛下含硼燃料热氧化特性及动力学分析

通过高温热重(TG-DTG)分析和常压差示扫描量热(DSC)等分析手段,研究不同气氛对含硼燃料热氧化特性的影响.利用TG-DTG切线法得到不同气氛下含硼燃料的着起始氧化温度温度,分析实验结果表明,在50~650 ℃温度区间,燃料的着火温度不受气氛影响,提高氧浓度有助于促进燃料反应放热.在650~1 100 ℃温度区间,在O2、空气和CO2气氛下含硼燃料中硼的起始氧化温度温度分别为705.3、710.8、723.4 ℃,在N2下增重非常少,与Ar不发生反应;提高O2浓度有利于降低含硼燃料中硼的起始氧化温度,加快氧化反应,提高含硼燃料的反应效率.采用Satava-Sestak 积分法模型计算燃料在高温段(650~1 100 ℃)不同气氛下的化学反应动力学参数.

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