上海交通大学学报

上海交通大学学报 >

2024 , Vol. 58 >Issue 8: 1148 - 1155

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2023.195

机械与动力工程

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 ,
  • 王继刚 ,
  • 乔信起
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  • 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
沈钰锟(2002-),本科生,主要研究燃料液滴的蒸发.
王继刚,博士,讲师;E-mail: wjg_sun@yzu.edu.cn.

收稿日期: 2023-05-15

  修回日期: 2023-06-11

  录用日期: 2023-06-12

  网络出版日期: 2023-06-30

基金资助

国家自然科学基金(52006136);江苏省自然科学基金(BK20220588)

收起

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

  • SHEN Yukun ,
  • WANG Jigang ,
  • QIAO Xinqi
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  • 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 date: 2023-05-15

  Revised date: 2023-06-11

  Accepted date: 2023-06-12

  Online published: 2023-06-30

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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

本文引用格式

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 . DOI: 10.16183/j.cnki.jsjtu.2023.195

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

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