煤直接、间接液化柴油及其混合燃料液滴的蒸发特性

doi:10.16183/j.cnki.jsjtu.2023.195

上海交通大学学报 ›› 2024, Vol. 58 ›› Issue (8): 1148-1155.doi: 10.16183/j.cnki.jsjtu.2023.195

煤直接、间接液化柴油及其混合燃料液滴的蒸发特性

沈钰焜¹, 王继刚¹(), 乔信起²

1.扬州大学机械工程学院,江苏扬州 225127
2.上海交通大学动力机械与工程教育部重点实验室,上海 200240

收稿日期:2023-05-15 修回日期:2023-06-11 接受日期:2023-06-12 出版日期:2024-08-28 发布日期:2024-08-27
通讯作者: 王继刚,博士,讲师;E-mail: wjg_sun@yzu.edu.cn.
作者简介:沈钰锟(2002-),本科生,主要研究燃料液滴的蒸发.
基金资助:
国家自然科学基金(52006136);江苏省自然科学基金(BK20220588)

Droplets Evaporation Characteristics of Diesel from Direct and Indirect Coal Liquefaction and Their Blends

SHEN Yukun¹, WANG Jigang¹(), QIAO Xinqi²

1. School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China
2. Key Laboratory of Power Machinery and Engineering of the Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2023-05-15 Revised:2023-06-11 Accepted:2023-06-12 Online:2024-08-28 Published:2024-08-27

摘要/Abstract

摘要：

为研究煤直接和间接液化柴油(DDCL、DICL)及其混合燃料液滴在不同环境温度下(500、600和700 ℃)的蒸发特性,利用基于悬挂法的液滴蒸发试验装置,采用交叉石英丝悬挂液滴,通过燃料设计方法,将DDCL和DICL按29∶21的质量比混合后可获得与柴油理化特性非常相近的燃料.研究显示,DDCL、DICL及其混合燃料液滴蒸发规律与柴油相似,均呈现两阶段蒸发.在600 ℃以下与经典d²定律(d为液滴直径)存在较大偏差,随环境温度的升高,与d²定律的偏差逐渐缩小.在以上3种环境温度下,混合燃料液滴均表现出的蒸发性能优于柴油,分别比柴油的平均蒸发速率高27.2%、46.3%和19.6%.研究结果为煤液化柴油在柴油机上的应用提供支撑数据.

关键词: 蒸发速率, 液滴寿命, 煤直接液化柴油, 煤间接液化柴油

Abstract:

To study the evaporation characteristics of diesel from direct coal liquefaction (DDCL), diesel from indirect coal liquefaction (DICL), and their blended fuel droplets at different ambient temperatures (500, 600 and 700 ℃), a droplet evaporation test apparatus based on the suspension method was used to suspend droplets using crossed quartz wires, and a fuel with very similar physicochemical properties to diesel was obtained by blending of DDCL and DICL at a mass ratio of 29∶21 by using the fuel design method. It is shown that the evaporation pattern of DDCL, DICL, and their blended fuel droplets is similar to that of diesel fuel, and they all show a two-stage evaporation. The deviation from the classical d² law is large below 600 ℃, and the deviation from the d² law gradually decreases with the increase of ambient temperature. At all three ambient temperatures, the blended fuel droplets exhibit a better evaporation performance than diesel, with 27.2%, 46.3%, and 19.6% higher average evaporation rates than diesel, respectively, providing supporting data for the application of coal liquefied diesel in diesel engines.

Key words: evaporation rate, droplet lifetime, diesel from direct coal liquefaction, diesel from indirect coal liquefaction

中图分类号:

TK46+4

沈钰焜, 王继刚, 乔信起. 煤直接、间接液化柴油及其混合燃料液滴的蒸发特性[J]. 上海交通大学学报, 2024, 58(8): 1148-1155.

SHEN Yukun, WANG Jigang, QIAO Xinqi. Droplets Evaporation Characteristics of Diesel from Direct and Indirect Coal Liquefaction and Their Blends[J]. Journal of Shanghai Jiao Tong University, 2024, 58(8): 1148-1155.

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参考文献 31

[1]	李海军. 煤直接液化柴油产品特性研究[J]. 神华科技, 2016, 14(2): 74-77.
	LI Haijun. Characteristic research of DDCL product[J]. Shenhua Science and Technology, 2016, 14(2): 74-77.
[2]	SHEN S, SUN K, CHE Z, et al. An experimental investigation of the heating behaviors of droplets of emulsified fuels at high temperature[J]. Applied Thermal Engineering, 2019, 161: 114059.
[3]	OMARA M, DOMINIQUEA T, PATRIZIOB M, et al. Investigation on the conditions leading to the micro-explosion of emulsified fuel droplet using two colors LIF method[J]. Experimental Thermal and Fluid Science, 2020, 116: 110106.
[4]	HILLENBRAND T, BRÜGGEMANN D. Evaporation of free falling droplets of binary alkane-ethanol blends[J]. Fuel, 2020, 274: 117869.
[5]	玄铁民, 孙中成, 李文豪, 等. 甲醇/正辛醇/加氢催化生物柴油单液滴蒸发与微爆特性研究[J]. 西安交通大学学报, 2021, 56(1): 1-10.
	XUAN Tiemin, SUN Zhongcheng, LI Wenhao, et al. Experimental study on evaporation and micro-explosion characteristics of ternary blended droplets of methanol, HCB and n-octanol[J]. Journal of Xi’an Jiaotong University, 2021, 56(1): 1-10.
[6]	QIAN Y, ZHAO P, TAO C, et al. Experimental study on evaporation characteristics of lubricating oil/gasoline blended droplet[J]. Experimental Thermal and Fluid Science, 2019, 103: 99-107.
[7]	ZHANG H, LU Z, WANG T, et al. Mist formation during micro-explosion of emulsion droplets[J]. Fuel, 2023, 339: 127350.
[8]	CHEN X, XI X, XIAO G, et al. Effect of ambient temperature and water content on emulsified heavy fuel oil droplets evaporation: Evaporation enhancement by droplet puffing and micro-explosion[J]. Fuel, 2023, 334: 126614.
[9]	WANG Z, YUAN B, HUANG Y, et al. Progress in experimental investigations on evaporation characteristics of a fuel droplet[J]. Fuel Processing Technology, 2022, 231: 107243.
[10]	HAN K, LIN Q, LIU M, et al. Experimental study on the micro-explosion characteristics of biodiesel/1-pentanol and biodiesel/ methanol blended droplets[J]. Renewable Energy, 2022, 196: 261-277.
[11]	MARTI F, MARTINEZ O, MAZO D, et al. Evaporation of a droplet larger than the Kolmogorov length scale immersed in a rlative mean flow[J]. International Journal of Multiphase Flow, 2017, 88: 63-68.
[12]	LAW C K. Recent advances in droplet vaporization and combustion[J]. Progress in Energy and Combustion Science, 1982, 8: 171-201.
[13]	NOMURA H, MURAKOSHI T, SUGANUMA Y, et al. Microgravity experiments of fuel droplet evaporation in sub and supercritical environments[J]. Proceedings of the Combustion Institute, 2017, 36: 2425-2432.
[14]	DAIF A, BOUAZIZ M, CHESNEAU X, et al. Comparison of multicomponent fuel droplet vaporization experiments in forced convection with the Sirignano model[J]. Experimental Thermal and Fluid Science, 1999, 18: 282-290.
[15]	KIM H, WON J, BAEK S W. Evaporation of a single emulsion fuel droplet in elevated temperature and pressure conditions[J]. Fuel, 2018, 226: 172-180.
[16]	BIROUK M, FABBRO S C. Droplet evaporation in a turbulent atmosphere at elevated pressure—Experimental data[J]. Proceedings of the Combustion Institute, 2013, 34: 1577-1584.
[17]	VERWEY C, BIROUK M. Experimental investigation of the effect of droplet size on the vaporization process in ambient turbulence[J]. Combustion and Flame, 2017, 182: 288-297.
[18]	金志伟. 煤液化柴油的材料相容性、喷射与喷雾研究[D]. 上海: 上海交通大学, 2019.
	JIN Zhiwei. Study on material compatibility, injection and spray of coal-liquefied diesel[D]. Shanghai: Shanghai Jiao Tong University, 2019.
[19]	梅莲, 王忠, 刘帅, 等. 煤液化柴油掺混甲醇柴油机试验研究[J]. 煤炭转化, 2018, 41(5): 38-51.
	MEI Lian, WANG Zhong, LIU Shuai, et al. Study on engine fueled with mixture of coal liquefied diesel and methanol[J]. Coal Conversion, 2018, 41(5): 38-51.
[20]	胡云剑, 金环年, 李克健, 等. 煤直接液化柴油的性质及发动机燃烧和排放[J]. 石油学报, 2010, 26(Sup.1): 246-252.
	HU Yunjian, JIN Huannian, LI Kejian, et al. Properties, engine combustion and emission of diesel from direct coal liquefraction[J]. Acta Petroleisinica, 2010, 26(Sup.1): 246-252.
[21]	代玉利, 裴毅强, 秦静, 等. 煤制油的喷雾燃烧及排放性能试验研究[J]. 内燃机工程, 2015, 36(3): 26-32.
	DAI Yuli, PEI Yiqiang, QIN Jing, et al. Experimental study on spray combustion and emission characteristics of coal-to-liquids[J]. Chinese Internal Combustion Engine and Engineering, 2015, 36(3): 26-32.
[22]	FANG X, HUANG Z, QIAO X, et al. Skeletal mechanism development for a 3-component jet fuel surrogate using semi-global sub-mechanism construction and mechanism reduction[J]. Fuel, 2018, 229: 53-59.
[23]	WANG J, HUANG X, QIAO X, et al. Experimental study on effect of support fiber on fuel droplet vaporization at high temperatures[J]. Fuel, 2020, 268: 117407.
[24]	MANJUNATH M, RAGHAVAN V, MEHTA P S. Evaporation characteristics of suspended droplets of biodiesel fuels of Indian origin and their diesel blends-An experimental study[J]. International Journal of Heat and Mass Transfer, 2015, 88: 28-41.
[25]	WANG J, WANG X, CHEN H, et al. Experimental study on puffing and evaporation characteristics of jatropha straight vegetable oil (SVO) droplets[J]. International Journal of Heat and Mass Transfer, 2018, 119: 392-399.
[26]	WANG J, QIAO X, JU D, et al. Experimental study on the evaporation and micro-explosion characteristics of nanofuel droplet at dilute concentrations[J]. Energy, 2019: 183: 149-159.
[27]	WANG J, ZHANG Q, LIANG K, et al. Micro-explosion enhanced combustion of Jatropha oil/2, 5-dimethylfuran (DMF) blended fuel droplets[J]. Fuel, 2023, 331: 128507.
[28]	HASHIMOTO N, NOMURA H, SUZUKI M, et al. Evaporation characteristics of a palm methyl ester droplet at high ambient temperatures[J]. Fuel, 2015, 143: 202-210.
[29]	LIU Y C, SAVAS A J, AVEDISIAN C T. Spherically symmetric droplet combustion of three and four component miscible mixtures as surrogates for jet[J]. Proceedings of the Combustion Institute, 2013, 34: 1569-1576.
[30]	CHAUVEAU C, BIROUK M, HALTER F, et al. An analysis of the droplet support fiber effect on the evaporation process[J]. International Journal of Heat and Mass Transfer, 2019, 128: 885-891.
[31]	GHASSEMI H, BAEK S W, KHAN Q S. Experimental study on binary droplet evaporation at elevated pressures and temperatures[J]. Combustion Science and Technology, 2006, 178: 1031-1053.

参数	取值
参数	柴油	DDCL	DICL	混合燃料
密度(20 ℃)/(kg·m^-3)	834	849	767	816
运动黏度(20 ℃)/(mm²·s^-1)	4.4	2.5	3.2	2.8
表面张力(20 ℃)/(mN·m^-1)	27.9	26.7	25.9	26
闪点/℃	68	66	63	66
终馏点(0.1 MPa)/℃	346	268	353	334
热值/(MJ·kg^-1)	42.8	42.8	43.9	43.2
十六烷值	52.4	40.5	75	52.6

煤直接、间接液化柴油及其混合燃料液滴的蒸发特性

Droplets Evaporation Characteristics of Diesel from Direct and Indirect Coal Liquefaction and Their Blends

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