Li/SF<sub>6</sub>反应动力学参数及燃烧现象研究

吴浩齐; 骆政园; 白博峰

doi:10.11993/j.issn.2096-3920.2023-0108

Li/SF₆反应动力学参数及燃烧现象研究

doi: 10.11993/j.issn.2096-3920.2023-0108

西安交通大学动力工程多相流国家重点实验室, 陕西西安, 710049

基金项目: 国家级基础加强项目资助(2020-JCJQ-ZD).

详细信息

作者简介:
吴浩齐(1999-), 男, 在读硕士, 主要研究方向为金属燃料燃烧数值仿真

通讯作者:
白博峰(1971-), 男, 博士, 教授, 主要研究方向为多相流动与传热

中图分类号: TJ630.32; U674
计量
- 文章访问数: 158
- HTML全文浏览量: 60
- PDF下载量: 37
- 被引次数: 0
出版历程
- 收稿日期: 2023-09-18
- 修回日期: 2023-10-29
- 录用日期: 2023-10-30
- 网络出版日期: 2024-01-18

Study on Reaction Kinetics Parameters and Combustion Phenomena of Li/SF₆

State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China

摘要

摘要: 为探究不同温度及压力条件下锂/六氟化硫(Li/SF₆)燃烧现象及反应动力学参数, 利用激波诱导高压热载荷激励Li/SF₆燃烧实验台测量了温度范围为830 ~1 400 K, 压力范围为0.8 ~11 atm时的点火滞燃期; 利用可视化实验段探究了Li/SF₆燃烧过程和基本发光现象等规律; 利用点火滞燃期与温度和压力呈现出的典型Arrhenius依赖关系, 通过多元线性回归法得出反应动力学参数。研究结果表明, Li/SF₆燃烧的点火滞燃期随温度和压力的升高而减少, 发光现象随压力的升高由红色孤立火核逐渐转化为白色明亮火焰, 并结合实验测定的点火滞燃期求出了指前因子 A 、指数因子 n 和活化能 Ea, 为明晰燃烧特性、构建数值仿真提供了重要依据。
- Li/SF₆ /
- 点火滞燃期 /
- 反应动力学 /
- 激波
Abstract: In order to investigate the combustion phenomenon and reaction kinetics parameters of Li/SF₆ under different temperature and pressure conditions, the Li/SF₆ combustion test platform with shock wave-induced high pressure thermal load excitation was used to measure the ignition delay period at the temperature of 830~1 400 K and the pressure range of 0.8~11 atm. The laws of Li/SF₆ combustion process and basic luminescence phenomena were investigated by the visual experiment section. Based on the typical Arrhenius dependence between ignition delay period and temperature and pressure, the reaction kinetics parameters were obtained by multiple linear regression method. The results show that the ignition delay period of Li/SF₆ combustion decreases with the increase in temperature and pressure, and the luminescence phenomenon gradually changes from a red isolated fire nucleus to a white bright flame with the increase in pressure. The pre-index factor A, exponential factor N, and activation energy E_a are obtained based on the experimentally measured ignition delay period, which provides an important basis for the identification of combustion characteristics and the construction of numerical simulation.
- Li/SF₆ /
- ignition delay period /
- reaction kinetics /
- shock wave

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图 1 浸没燃烧反应器构型示意图

Figure 1. Configuration of submerged combustion reactor

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图 2 Li/SF₆反应高压激波管示意图

Figure 2. Schematic diagram of high pressure shock tube for Li/SF₆ reaction

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图 3 Li/SF₆燃烧反应点火滞燃期定义

Figure 3. Definition of Li/SF₆ combustion reaction ignition delay period

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图 4 T=933.7 K、P=2.00 atm时燃烧现象(单帧间隔0.5 ms)

Figure 4. Combustion phenomenon with T=933.7 K, P=2.00 atm (single frame interval 0.5 ms)

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图 5 T=933.4 K、P=2.64 atm时燃烧现象(单帧间隔0.5 ms)

Figure 5. Combustion phenomenon with T=933.4 K, P=2.64 atm (single frame interval 0.5 ms)

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图 6 T=931.7 K、P=8.89 atm时燃烧现象(单帧间隔0.5 ms)

Figure 6. Combustion phenomenon with T=931.7 K, P=8.89 atm (single frame interval 0.5 ms)

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图 7 T=1383.4 K、P=2.73 atm时燃烧现象(单帧间隔0.5 ms)

Figure 7. Combustion phenomenon with T=1383.4 K, P=2.73 atm (single frame interval 0.5 ms)

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图 8 压力对Li/SF₆点火滞燃期的影响

Figure 8. Influence of pressure on ignition delay period of Li/SF₆

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图 9 温度对Li/SF₆点火滞燃期的影响

Figure 9. Influence of temperature on ignition delay period of Li/SF₆

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图 10 Li/SF₆点火滞燃期随压力和温度变化规律

Figure 10. Changes of Li/SF₆ ignition delay period with pressure and temperature

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表 1 Li/SF₆燃烧点火滞燃期实验工况点

Table 1. Experimental conditions of ignition delay period of Li/SF₆ combustion

序号	点火压力/atm	爆发压力/atm	点火温度/K	点火滞燃期/μs	质量/mg
1	0.85	1.91	787.8	458.60	30
2	0.87	2.46	869.8	393.10	100
3	0.89	2.14	860.2	396.80	30
4	0.91	3.20	1 355.4	209.00	30
5	0.95	2.69	1 172.2	259.80	30
6	1.00	2.62	991.5	339.2	30
7	1.02	2.69	961.4	313.90	30
8	1.16	2.74	836.2	320.40	30
9	2.19	6.52	986.7	234.20	30
10	2.73	9.81	1 383.4	106.10	30
11	2.78	8.14	921.6	201.80	100
12	3.91	9.18	935.8	179.00	30
13	4.39	8.69	945.4	162.80	30
14	5.05	7.67	935.3	131.30	30
15	8.89	13.08	931.7	111.20	30
16	10.71	24.29	937.7	92.60	30

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参考文献(18)

[1]	Qu Y, Zou C, Xia W, et al. Shock tube experiments and numerical study on ignition delay times of ethane in super lean and ultra-lean combustion[J]. Combustion and Flame, 2022, 246: 112462.
[2]	徐胜利, 张英佳, 黄佐华, 等. 激波管研究煤油/空气混合气的自着火特性[J]. 科学通报, 2011, 56(1): 88-96.
[3]	Hartmann M, Gushterova I, Fikri M, et al. Auto ignition of toluene-doped n-heptane and iso-octane/air mixtures: High-pressure shock-tube experiments and kinetics modeling[J]. Combustion and Flame, 2011, 158(1): 172-178.
[4]	Davidson D F, Oehlschlaeger M A, Hanson R K. Methyl concentration time-histories during Iso-octane and N-heptane oxidation and pyrolysis[J]. Proceedings of the Combustion Institute, 2007, 31(1): 321-328.
[5]	黄文林, 孙五川, 张英佳, 等. 二甲醚低温低压自点火行为的实验和理论研究[J]. 工程热物理学报, 2021, 42(4): 1070-1079. Huang Wenlin, Sun Wuchuan, Zhang Yingjia, et al. Experimental and theoretical study of dimethyl ether auto-ignition at low temperature and low pressure[J]. Journal of Engineering Thermophysics, 2021, 42(4): 1070-1079.
[6]	Thomas W M, Herman K, Rodney L B. Shock tube ignition of AL/MG alloys in water vapor and argon[J]. Experimental Thermal and Fluid Science, 1993, 7(2): 154-154.
[7]	郑波, 胡栋, 丁儆. 铝粉尘激波点火的实验研究[J]. 爆炸与冲击, 1997(2): 174-181. Zheng Bo, Hu Dong, Ding Jing. Experimental study of shuck wave ignition of aluminum dust[J]. Explosion and Shock Waves, 1997(2): 174-181.
[8]	梁金虎. 煤油点火及铝粉点火和燃烧特性的激波管研究[D]. 重庆: 重庆大学, 2015.
[9]	Zhang F. Detonation in reactive solid particle-gas flow [J]. Journal of Propulsion and Power. 2006, 22 (6): 1289-1309.
[10]	郑邯勇, 卜建杰. 六氟化硫在熔融锂中的浸没喷射反应过程[J]. 化工学报, 1996, 47(6): 656-662. Zheng Hanyong, Bu Jianjie. The submerged jet reaction process of sulfur hexafluoride into molten lithium[J]. CIESC Journal, 1996, 47(6): 656-662.
[11]	张文群, 张振山. 一种非理想多相共存体系平衡的通用计算方法[J]. 兵器材料科学与工程, 2002, 25(6): 8-11. Zhang Wenqun, Zhang Zhenshan. General computational method of phase equilibrium of multiphase non-ideal systems[J]. Ordnance Material Science and Engineering, 2002, 25(6): 8-11.
[12]	张立超. 高温化学蓄热器的技术研究[D]. 哈尔滨: 哈尔滨工程大学, 2007.
[13]	祝晓瑜. Li/SF₆表面喷射反应器内燃烧流场数值研究[D]. 哈尔滨: 哈尔滨工程大学, 2012.
[14]	张会强, 林文漪, 周力行. 锂/六氟化硫气——液浸没有反应射流和燃烧的数值研究[J]. 工程热物理学报, 1996, 17(4): 482-486.
[15]	Lyu H Y, Chen L D. On the estimates of Li₂S thermodynamic properties for prediction of Li-SF₆ wick combustion[J]. Journal of Physics & Chemistry of Solids, 2013, 46(12): 1427-1429.
[16]	Chan S H, Tan C C, Zhao Y G, et al. Li-SF₆ combustion in stored chemical energy propulsion systems[J]. Technical Report. 1991, 23(1): 1139-1146.
[17]	Parnell L A, Nelson R S, Ogden T R, et al. Flash and real-time radiographic diagnostics of closed liquid metal combustion for underwater propulsion[C]//IEEE 25th Intersociety Energy Conversion Engineering Conference. Reno, Nevada: IEEE, 1990.
[18]	宗潇, 李宏伟, 韩新波, 等. 气液射流反应流动特性的数值研究[J]. 西安交通大学学报, 2020, 54(3): 35-40, 196. Zong Xiao, Li Hongwei, Han Xinbo, et al. Numerical investigation on flow characteristics of gas-lquid reactive jet[J]. Journal of Xi’an Jiaotong University, 2020, 54(3): 35-40, 196.