详细信息
热力学模型对石油低压汽液平衡计算的适用性
Predication Accuracy of Vapour-liquid Equilibrium (VLE) Models at Low Pressure for Oils
文献类型:期刊文献
中文题名:热力学模型对石油低压汽液平衡计算的适用性
英文题名:Predication Accuracy of Vapour-liquid Equilibrium (VLE) Models at Low Pressure for Oils
作者:李少萍[1];徐心茹[1];文建发[1];张一安[1]
机构:[1]华东理工大学石油加工研究所,上海200237
年份:2001
卷号:27
期号:2
起止页码:202
中文期刊名:华东理工大学学报(自然科学版)
外文期刊名:Journal of East China University of Science and Technology
收录:CSTPCD;;Scopus;北大核心:【北大核心2000】;CSCD:【CSCD2011_2012】;
基金:中国石化集团有限公司项目 !(8840 4)
语种:中文
中文关键词:汽液平衡;平衡常数;石油馏分;相平衡;热力学模型
外文关键词:vapour liquid equilibrium; equilibrium constant; petroleum fraction; phase equilibrium
摘要:以 Maxwell- Bonnel图拟合式、对比态 Antoine方程及 Pitzer- Riedel关联式分别求算饱和蒸汽压 p0 ,并用 Roult K值 ( K=p0 / p) ,计算窄馏分 K值。根据实测的中原、孤岛和克拉玛依石油馏分低压 K值 ,考察上述三式 ,结果表明 :对比态 Antoine式预测精度是最好的 ,其温度预测绝对平均偏差为 7.0℃ ,K值预测平均相对偏差为 1 5.6% 。
VLE constants of Zhongyuan, Gudao and Kelamayi oils have been predicted by using three vapour liquid equilibrium (VLE) equations and their accuracy has been checked. The VLE constants are calculated by using Raoult K formula ( K=p 0/p) and the results of the Maxwell Bonnel and the Pitzer Riedel equation are not satisfactory. Reduced Antoine equation has the results of an absolute mean deviation of 7.0℃ for equilibrium temperature and an absolute mean relative deviation of 15.6% for K .
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