光谱学与光谱分析 |
|
|
|
|
|
Using Instantaneous Spectra to Determine Dominant Species in the DDT Process of Epoxypropane |
LI Ping1, 2, HU Dong2, 3, YUAN Chang-ying2, 4, DAI Song-hui1, XIAO Hai-bo1 |
1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China 2. Institute of High Temperature and High Pressure Physics, Sichuan University, Chengdu 610065, China 3. Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, 621900, China 4. Physics Department, Southwest University of Science and Technology, Mianyang 621002, China |
|
|
Abstract After solving problems of weak light detection, the calibration of the spectral sensitivity of the measuring system, and the synchronization of the measuring system, instantaneous emission spectra of epoxypropane in the process of deflagration to detonation transition (DDT) with the exposure time of 2-8 μs and the resolution of 0.2 nm were acquired from six different side windows of an explosion shock tube. Using the corrected spectral data, curves of the optical radiant intensity of main reaction products versus the DDT distance from the ignition point were obtained. These curves provided information about the evolution of the reaction and the products during the DDT process. Results indicate that the chemical reaction rate of the gaseous fuel and the corresponding concentrations of intermediate products increased gradually at the deflagration stage, but at the moment of deflagration to detonation transition, the reaction rate increased rapidly and the concentrations!of products increased sharply. Among these main products, concentration increments of molecule CO, and radicals CHO and OH were greater than other products, which means that CO, CHO and OH are the dominant species that affect the DDT process greatly.
|
Received: 2005-10-19
Accepted: 2006-03-05
|
|
Corresponding Authors:
LI Ping
|
|
Cite this article: |
LI Ping,HU Dong,YUAN Chang-ying, et al. Using Instantaneous Spectra to Determine Dominant Species in the DDT Process of Epoxypropane [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(09): 1569-1572.
|
|
|
|
URL: |
https://www.gpxygpfx.com/EN/Y2006/V26/I09/1569 |
[1] Kuznetsov M S, Alekseev V I, Dorofeev S B. Shock Waves, 2000, 10: 217. [2] Smirnov N N, Panfilov I I, Tyurnikov M V, et al. J. Hazardous Materials, 1997, 53: 195. [3] ZHAO Heng-yang(赵衡阳). Fundamentals of Explosion for Gas and Dust(气体和粉尘的爆炸原理). Beijing: Beijing Institute of Technology Press(北京: 北京理工大学出版社), 1996. [4] LIU Cai-xue, HU Dong, WANG Yong-guo, et al(刘才学,胡 栋, 王永国, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),1994,14(3):13. [5] LI Ping, HU Dong , YUAN Chang-ying,et al(李 萍,胡 栋,袁长迎, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2005, 25(12): 1916. [6] LI Ping, YUAN Chang-ying, HU Dong, et al(李 萍, 袁长迎, 胡 栋,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004,24(7):784. [7] Robinson J W. Handbook of Spectroscopy. CRC Press, 1974. 756. |
[1] |
FU Hai-ying1, CAO Xi-yan2, XING Zhao-guo2, WU Guo-zhong1 . Effect of Ionic Liquid [bmim][PF6] on the Transient Photolysis Behavior of Xanthone[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(07): 1744-1748. |
[2] |
CHEN Jia-long, GAO Guang-yu, CHU Sai-sai, WANG Shu-feng*, GONG Qi-huang* . All Wavelength Picosecond Fluorescent Anisotropy of Aligned MEH-PPV/PVP Electrospun Fibers[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(10): 2593-2596. |
[3] |
ZHU Bing-li1, 3, BAI Yong-lin2*, WANG Bo2, LIU Bai-yu2, OUYANG Xian2,YANG Wen-zheng2, BAI Xiao-hong2, QIN Jun-jun2, ZHAO Jun-ping2, GOU Yong-sheng2, LU Kai1, 3 . Research on the Method of Transient Spectrum Detection Based on Array CCD [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(04): 1028-1031. |
[4] |
JIA Ji-kuo1, LUO Li1*, ZHANG Wei1, HUANG Fang-ying1, DAI Qiang-qin1, DING Cai-rong2, WANG He-zhou2 . Room Temperature Ultraviolet Stimulated Emission of ZnO Nanocrystals [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(09): 2525-2528. |
[5] |
LI Ying1,LI Ping1,2*,XIAO Hai-bo1,HU Dong2,3,YUAN Chang-ying2,4. Detonation Temperature Measurement of Epoxypropane Using Instantaneous Spectrum Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(03): 490-493. |
[6] |
LI Ping1, 2, HU Dong2, 3, YUAN Chang-ying2, 4, XIAO Hai-bo1, LIU Jun-chao2, SUN Zhu-mei2, 3, DONG Shi2, 3 . Determination of Reaction Products of Epoxypropane in the Process of Deflagration to Detonation Transition by Emission Spectroscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 1916-1919. |
[7] |
LI Ping1, 2, YUAN Chang-ying2, 4, HU Dong2, 3, LIU Jun-chao2, SUN Zhu-mei2, 3, DONG Shi2, 3, XIAO Hai-bo1 . Instantaneous Emission Spectra of Epoxypropane in the Process of Deflagration to Detonation Transition[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(07): 784-786. |
|
|
|
|