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HETP measurement using industrial-scale batch distillation
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-01-07 , DOI: 10.1016/j.cep.2020.107800
Nguyen Van Duc Long , Dong Young Lee , Sun Yong Park , Byeng Bong Hwang , Moonyong Lee

The height equivalent to a theoretical plate (HETP), representing the mass transfer efficiency, allows designers to determine the packed bed height. In this study, a novel methodology was proposed to evaluate the HETP using an existing industrial-scale batch distillation when designing the height of an industrial-scale continuous distillation column. Specifically, an existing batch distillation used for the reclamation of dichlorodifluoromethane CCl2F2 (R-12 or Freon-12) from a waste refrigerant mixture was employed to determine the HETP value. Prior to the simulation, a literature survey was investigated to determine the suitable property package for simulation. The simulation results were then compared with the experimental data to determine whether REFerence fluid PROPerties can be used as a suitable package for this study. Several batch distillation runs were carried out using industrial structured packing and random packing, which are candidates for the design and optimization of a continuous distillation column in this specific separation. The batch distillation was then rigorously simulated for a comparison with the experimental data, enabling us to calculate the HETP value. The simulated results agreed well with experimental data, demonstrating that the proposed methodology is effective and easy to apply.



中文翻译:

使用工业规模的间歇蒸馏进行HETP测量

等效于理论塔板(HETP)的高度(表示传质效率)使设计人员能够确定填充床的高度。在这项研究中,提出了一种新颖的方法,用于在设计工业规模连续蒸馏塔的高度时使用现有的工业规模间歇蒸馏来评估HETP。具体地,用于二氯二氟甲烷CCl 2 F 2的回收的现有间歇蒸馏使用废制冷剂混合物中的R-12(氟利昂-12)来确定HETP值。在进行模拟之前,需要进行文献调查以确定适合进行模拟的属性包。然后将模拟结果与实验数据进行比较,以确定参考液PROPerty是否可用作本研究的合适包装。使用工业结构填料和无规填料进行了几次分批蒸馏,这是在这种特定分离条件下设计和优化连续蒸馏塔的候选方法。然后严格模拟分批蒸馏,以与实验数据进行比较,从而使我们能够计算HETP值。模拟结果与实验数据吻合得很好,

更新日期:2020-01-07
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