天然气物性参数计算

Calculation of Physical Property Parameters of Natural Gas

本文考察了压缩因子、粘度和烃露点等天然气物性参数的几种计算方法及Cn^+含量对计算结果的影响,推荐以组成数据和纯物质物性数据为基础的、用于计算基准状态和工作状态下与天然气流量计量、质量和输气控制等方面有关的物性参数的计算方法。计算了四川省内输气干线35个样品的物性参数,并用国内外气质标准评价其气质。

Investigating several calculation methods of physical property parameters of natural gas such as compressibility factors,viscosity and dew point etc., and the effect of Cn^+ content on calculation resuits, this paper recommends a calculation method to calculate the physical property parameters related to flow quantity, quality and transportation control etc., of natural gas at basic standard state and work state, based on the data of composition and physical property of pure materials. The physical property parameters of 35 samples obtained from main transportation pipeline in Sichuan province were calculated and the natural gas quality were evaluated with domestic and foreign standards.