LNG热物性计算  

Calculation of LNG Thermodynamic Properties

作　　者：刘璐[1] 刘宝玉[1] 李少华[1] 戚积功[1] 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001

出　　处：《当代化工》2010年第6期696-698,共3页Contemporary Chemical Industry

摘　　要：天然气在其液化或液态状态下输送过程中,其物性参数随着温度和压力的变化而不断改变,因此液化天然气物性计算中不能按理想状态处理。根据实际工程需要,使用LKP方程及其关联式对密度、焓和熵值进行计算;通过对比态原理和Lohrenz等关联式计算了比热容和粘度。计算结果和实验数据对比,表明其计算精度满足工程实际需求。LNG＇s physical parameters constantly change along with temperature and pressure changing during transportation process, so LNG properties can not be calculated as ideal state. According to the actual project needs , LKP equation and its correlation was used to calculate density, enthalpy and entropy, CSP and Lohrenz correlation was used to calculate heat capacity and viscosity. The calculated results were compared with experimental data. The results show that accuracy of their work can meet actual demand.

关 键 词：液化天然气 LKP 物性 焓 

分 类 号：TQ015[化学工程]