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| 二元塔顶累积全回流间歇精馏塔最少理论板数的近似计算 | |
| 引用本文： | 王为国,曾真,王存文,吴元欣. 二元塔顶累积全回流间歇精馏塔最少理论板数的近似计算[J]. 石油化工, 2011, 40(11): 1205-1210 |
| 作者姓名： | 王为国 曾真 王存文 吴元欣 |
| 作者单位： | 1. 武汉工程大学化工与制药学院,湖北武汉,430073 2. 武汉工程大学机电工程学院,湖北武汉,430073 3. 武汉工程大学绿色化工过程教育部重点实验室,湖北武汉,430073 |
| 摘 要： | 分析了二元塔顶累积全回流间歇精馏理论塔板数对塔顶产品中轻组分极限浓度的影响,得到当塔釜内的存液量超过一块理论板上的持液量时,塔顶产品中轻组分的极限浓度随理论塔板数的增加而提高;推导出二元塔顶累积全回流间歇精馏塔最少理论塔板数的近似计算公式并进行了经验修正,近似计算公式中最少理论塔板数为塔板持液量的显函数。对近似计算公式的验证结果表明,近似计算公式具有普适性,在塔板持液量较小时或塔板持液量较大但所需最少理论塔板数较多时,近似计算的最少理论塔板数与精确计算的最少理论塔板数的相对偏差小于1%。 |
| 关 键 词： | 间歇精馏 塔顶累积全回流 极限浓度 最少理论塔板数 |
Minimum Theoretical Trays for Binary Batch Distillation Under Total Reflux and Top Accumulation |
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| Wang Weiguo,Zeng Zhen,Wang Cunwen,Wu Yuanxin. Minimum Theoretical Trays for Binary Batch Distillation Under Total Reflux and Top Accumulation[J]. Petrochemical Technology, 2011, 40(11): 1205-1210 | |
| Authors: | Wang Weiguo Zeng Zhen Wang Cunwen Wu Yuanxin |
| Affiliation: | Wang Weiguo1,Zeng Zhen2,Wang Cunwen3,Wu Yuanxin3(1.School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan Hubei 430073,China,2.School of Mechanical and Electrical Engineering,3.Key Laboratory for Green Chemical Process of Ministry of Education,China) |
| Abstract: | The effect of theoretical tray number on the limiting concentration of the light components in the top products in binary batch distillation under total reflux and top accumulation was investigated.It was concluded that the limiting concentration of the light components in the top products increased with the increase of the theoretical tray number when the liquid hold-up in the reboiler was more than the liquid hold-up on a theoretical tray.The approximate calculation formula for the minimum theoretical tra... |
| Keywords: | batch distillation total reflux and top accumulation limiting concentration minimum theoretical tray number |
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