PONA多碳烴蒸餾塔之模擬與板效率之計算

Simulation of a Distillation Column Fed with Multi-PONA Hydrocarbons and Determination of Its Efficiency

蘇維彬(Wei-Bin Su) ； 林棕斌(Tzong-Bin Lin) ； 洪正宗(Cheng-Tsung Hong) ； 賴文煌(Wen-Huang Lai) ； 陳正文(Cheng-Wen Chen) ； 鄭鴻渠(Hung-Chu Cheng)

《石油季刊》 44卷3期 (2008/09) Pp. 45-55

https://doi.org/10.30128/JP.200809.0004

摘要

本文經由一PONA多碳烴蒸餾塔之模式與模擬，再次印證恰當的熱力學方法及足以描述氣液平衡現象的熱力學參數，對蒸餾塔模擬之重要性；並在後續的板效率分析中，依據沸點相近的PONA成份，提出設定輕成份群與重成份群之概念，將成份群引入決定板效率的目標函數中，以降低板效率估算值之偏差。有別於一般蒸餾塔單一輕成份與單一重成份之設定，成份群的設定方式可將不同分子結構的交互作用因素對氣液平衡之效應，在目標函數中作全部或部分的加成，特別是含多重成份的碳氫化合物，以提高目標函數值的代表性。

關鍵字

PONA多碳烴 ； 板效率 ； 輕重成份群

並列摘要

A model was proposed to simulate a distillation column where the feed contains multi-PONA hydrocarbons. The importance of the exact thermodynamic method and parameters fitting experimental VLE data well on simulation results were demonstrated. Based on the similarity of the boiling points of the same-carbon-number PONA species, the concept of light and heavy key groups was proposed and introduced into the objective function that is minimized to determine the overall column efficiency. Different from single light key and heavy key generally used, the key groups take into account of the interactions of various molecular structures. Therefore, their effects on vapor-liquid equilibrium could be totally or partially added in the objective function, thus increasing the accuracy of determined column efficiency especially for a multi-PONA hydrocarbon system.

並列關鍵字

Multi-PONA Hydrocarbons ； Plate Efficiency ； Light/Heavy Key Groups