| 板间汽相全混时降液管汽泡夹带对精馏塔塔板效率的影响 |
| |
| 引用本文： | 亓荣彬,梁治国,段道顺.板间汽相全混时降液管汽泡夹带对精馏塔塔板效率的影响[J].中国石油大学学报(自然科学版),2001,25(3). |
| |
| 作者姓名： | 亓荣彬 梁治国 段道顺 |
| |
| 作者单位： | 石油大学化学化工学院, |
| |
| 基金项目： | 国家自然科学基金资助项目，中国石油天然气集团公司科学研究与技术开发项目(B990 410 ) |
| |
| 摘 要： | 在汽相全混的基础上 ,推导了包括降液管汽泡夹带在内的塔板一维涡流扩散模型 ,并以此模型为基础分析了降液管汽泡夹带对塔板效率的影响 ,导出了Murphree板效率及表观Murphree板效率的计算公式。计算结果表明 ,降液管汽泡夹带的存在会使表观Murphree板效率降低 ,且点效率及解吸因数越大 ,降液管汽泡夹带对塔板效率的影响越显著。在几种特殊情况下 ,所推导的计算公式可简化为已有的形式
|
| 关 键 词： | 精馏塔 汽泡夹带 塔板效率 涡流扩散 数学模型 |
EFFECT OF VAPOR ENTRAINMENT ON DISTILLATION TRAY EFFICIENCY UNDER CONDITIONS OF FULLY MIXED VAPOR BETWEEN TRAYS |
| |
| QI Rong bin,et al..EFFECT OF VAPOR ENTRAINMENT ON DISTILLATION TRAY EFFICIENCY UNDER CONDITIONS OF FULLY MIXED VAPOR BETWEEN TRAYS[J].Journal of China University of Petroleum,2001,25(3). |
| |
| Authors: | QI Rong bin |
| |
| Abstract: | Under conditions of fully mixed vapor between trays, an eddy diffusion model is developed taking account of vapor entrainment. The effect of vapor entrainment on distillation tray efficiency is discussed with this model. The mathematical models of the Murphree tray efficiency and the apparent tray efficiency in the presence of vapor entrainment are derived. Typical calculation results indicate that the tray efficiency in the presence of vapor entrainment depends on the factors of vapor entrainment, liquid Peclet number, striping factor and the point efficiency. For some special cases, the above models can be simplified to the equivalent equations published in the former literature. |
| |
| Keywords: | distillation column vapor entrainment tray efficiency eddy diffusion mathematical model |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
