石油沥青体积修正系数数学模型的建立及对比  

Establishment and comparison of mathematical model for volume correction factor of petroleum asphalt

作　　者：张小英[1] 张涛 徐传杰 车金良 ZHANG Xiaoying;ZHANG Tao;XU Chuanjie;CHE Jinliang(State Key Laboratory of Heavy Oil Processing,China University of Petroleum(East China),Qingdao 266580,China;CNOOC Ningbo Daxie Petrochemical Co.,Ltd.,Ningbo 315812,China;Qingdao Zhongshida University Science and Technology Education Group Co.,Ltd.,Qingdao 266580,China;CNOOC Chemical and New Material Science Research Institute(Beijing)Co.,Ltd.,Qingdao 266500,China)

机构地区：[1]中国石油大学(华东)重质油全国重点实验室,山东青岛266580 [2]中海石油宁波大榭石化有限公司,浙江宁波315812 [3]青岛中石大科技教育集团有限公司,山东青岛266580 [4]中海油化工与新材料科学研究院(北京)有限公司,山东青岛266500

出　　处：《石油化工》2023年第12期1689-1694,共6页Petrochemical Technology

摘　　要：对22个不同石油沥青试样在0~180℃范围内的温度与密度的关系进行了研究,通过密度、密度倒数及密度对数与温度间的线性方程建立了体积修正系数数学模型,并将这些数学模型计算得到的体积修正系数与ASTM D4311/D4311-15查表得到的体积修正系数及实测体积修正系数进行对比。研究结果表明,在已知温度与密度关系的前提下,采用密度的倒数与温度的线性方程建立的数学模型计算体积修正系数最准确,ASTM D4311/D4311-15法误差最大。在石油沥青密度的对数与温度关系的基础上,建立了只与实测温度和基准温度相关的体积修正系数数学模型,该模型比ASTM D4311/D4311-15中的数学模型更简单、更准确、更合理。The correlations between temperature and density of 22 petroleum asphalt samples in the range of 0-180℃were studied.A mathematical model for volume correction factor was established by using linear equations between density,reciprocal of density,logarithm of density and temperature.The volume correction factors calculated by these mathematical models were compared with the volume correction factors obtained by looking up tables in ASTM D4311/D4311-15 and the measured volume correction factors.It is found that under the premise of knowing the relationship between temperature and density,the mathematical model established by using the linear equation between the reciprocal of density and temperature is the most accurate in calculating the volume correction factor,and the ASTM D4311/D4311-15 method has the largest error.On the basis of the relationship between the logarithm of density of petroleum asphalt and temperature,a mathematical model related only to the measured temperature and the reference temperature is established.This model is simpler,more accurate and more reasonable than the mathematical model in ASTM D4311/D4311-15.

关 键 词：石油沥青 密度 密度-温度关系 数学模型 体积修正系数 体积膨胀系数 

分 类 号：TQ011[化学工程]