Prediction of the Liquid Density of Fatty Acid Methyl Ethyl Based on the Peng-Robinson Equation and Volume Translation

被引：0
作者：
Cai L. [1 ]
Zhang Y. [1 ]
Wang X. [1 ]
机构：
[1] School of Energyand Power Engineering, Xi’an Jiaotong University, Xi’an
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2023年 / 57卷 / 12期
关键词：
density; fatty acid methylester; Peng-Robins one quation of state; volume translation;
D O I：
10.7652/xjtuxb202312007
中图分类号：
学科分类号：
摘要：
ToimprovetheaccuracyoftheclassicalPeng-Robinsoncubicequationofstate (PR equation)topredictthehigh-pressureliquiddensityoffattyacidmethylesters andtoprovidea reliabledensitypredictionmethodforthefurtherapplicationofthebiodieselinengineering the experimentaldensitydataof19saturatedfattyacid methylestersand6unsaturatedfattyacid methylestersatatmosphericpressureissuedintheliteratureswerecollectedandthePRequation wasmodifiedusingthevolumetranslation method.Accordingtotheinvestigation therewere regulartrendsbetweenthevaluesofthevolumetranslationandthetemperature carbonatom numbersanddoublebondnumbersofthefattyacidmethylesters andthequantitativerelationshipwasobtained.Basedonthis anewPRequationbasedonvolumetranslation (VTPRequation)usedtopredictthedensityofthehomologousfattyacidmethylesterswasobtained.The investigationresultsshowthattheoverallaveragerelativedeviationbetweenthedensityofthe fattyacidmethylestersatatmosphericpressurecalculatedwiththeproposedVTPRequationand theexperimentaldensitydatais0.30% andthatbetweensuchdensityunderhighpressurepredicted withtheequationandtheexperimentaldatais0.50%.ItindicatesthattheVTPRequationcan meettherequirementofthepracticalengineering. © 2023 Xi'an Jiaotong University. All rights reserved.
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页码：72 / 79
页数：7
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