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- 2016
真空下燃油强化汽化过程的实验研究
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Abstract:
摘要 对燃油在真空条件下的强化汽化过程开展实验研究。在可视化的真空容器内,测试燃料经喷嘴喷出后液滴破碎与汽化特性参数,得到不同喷油压力下的液滴粒径分布、汽液相发展形态变化、燃料汽化速度变化等规律。结果表明,真空下经喷嘴喷出后燃油的破碎和汽化是一个相互强化的过程,喷射压力越高,强化汽化的效果越显著。在喷射压力为5 MPa时,液滴粒径分布集中于5 μm范围内,在2 ms以内燃油汽化率达到平衡汽化率的85%,燃油快速接近汽液平衡。将强化汽化技术应用到常减压蒸馏工艺,可有效提高轻质油收率。
[1] | 段树林.闪急沸腾喷雾场粒度分布规律及燃烧特性的研究[J].内燃机学报,1999,17(1):54-58. |
[2] | Lienhard J H,Day J B.The breakup of superheated liquid jets [J].Journal of Basic Engineering,1970,92(3):515-522. |
[3] | Soid S N,Zainal Z A.Spray and combustion characterization for internal combustion engines using optical measuring techniques: a review[J].Energy,2011,36(2):724-741.</p> |
[4] | <p> 陈建民,杨娜.常减压装置减压深拔技术研究进展[J].现代化工,2010,30(6):20-24. |
[5] | 张文丰,熊健.常减压装置减压深拔系统改造[J].山东化工,2001,30(2):32-34. |
[6] | Hartman E L.Improving wash zone reliability in deepcut vacuum columns //Proceeding from Middle East Petrotech96 Conference and Exhibition,1996:1 197-1 207. |
[7] | Park B S,Lee S Y.An experimental investigation of the flash atomization mechanism[J].Atomization and Spray,1994,4(2):159-179. |
[8] | Brown C N,Ladommatos N.A numerical study of fuel evaporation and transportation in the intake manifold of a port-injected spark-ignition engine[J].Proceedings of the Institution of Mechanical Engineers Part D, Journal of Automobile Engineering,1991,205:161-175. |
[9] | Kim Y K,Iwai N,Suto H,et al.Improvement of alcohol engine performance by flash boiling injection[J].Jsae Review,1980,2:81-86. |
[10] | Oza R,Sinnamon J.An experiment and analytical study of flash-boiling fuel injection //SAE Technical paper.1983,doi:10.4271/830590. |
[11] | Brown R,York J L.Spray formed by flashing liquid jets[J].AIChE Journal,1962,8(2):149-153. |