Natural gas — Gas chromatographic requirements for hydrocarbon dewpoint calculation
天然气——碳氢化合物露点计算的气相色谱要求
发布日期:
2006-10-30
ISO 23874:2006充分详细地描述了分析输送或管道质量的经处理天然气的性能要求,使得可以使用适当的状态方程计算烃露点温度。ISO 23874:2006可适用于最大露点温度(cricondentherms)在0°C至-50°C之间的气体。计算这些最大露点温度的压力在2MPa(20巴)至5MPa(50巴)的范围内。
ISO 23874:2006中给出的程序涵盖了C5至C12范围内的烃的测量。使用ISO 6974(所有部分)定量测量的正戊烷用作桥接组分,并且相对于正戊烷测量所有C6和更高级的烃。主要部件采用ISO 6974(所有部件)进行测量,可测量的部件范围如ISO 6974-1中所定义。
ISO 23874:2006 describes the performance requirements for analysis of treated natural gas of transmission or pipeline quality in sufficient detail so that the hydrocarbon dewpoint temperature can be calculated using an appropriate equation of state. ISO 23874:2006 can be applied to gases that have maximum dewpoint temperatures (cricondentherms) between 0 °C and - 50 °C.The pressures at which these maximum dewpoint temperatures are calculated are in the range 2 MPa (20 bar) to 5 MPa (50 bar).
The procedure given in ISO 23874:2006 covers the measurement of hydrocarbons in the range C5 to C12. n-Pentane, which is quantitatively measured using ISO 6974 (all parts), is used as a bridge component and all C6 and higher hydrocarbons are measured relative to n-pentane. Major components are measured using ISO 6974 (all parts) and the ranges of components that can be measured are as defined in ISO 6974-1.