DIN EN ISO 6975-2005
天然气.延伸分析.气相色谱法

Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); English version of DIN EN ISO 6975


标准号
DIN EN ISO 6975-2005
发布日期
2005-09
实施日期
废止日期
中国标准分类号
E24
国际标准分类号
75.060
发布单位
DE-DIN
引用标准
ISO 5725-1-1994 ISO 6142-1981 ISO 6143-1981 ISO 6326-1-1989 ISO 6326-2-1981 ISO 6326-3-1989 ISO 6326-4-1994 ISO 6326-5-1989 ISO 6570-1-1983 ISO 6974-1 ISO 6974-2 ISO 6974-3 ISO 6974-4 ISO 6974-5 ISO 10715-1997 ISO 14111-1997
适用范围
This International Standard describes the specifications for the quantitative analysis of the following components of natural gas: helium hydrogen argon oxygen nitrogen carbon dioxide saturated hydrocarbons from C~ to Cs hydrocarbon fractions from C6 upwards aromatic compounds as benzene and toluene The gas-chromatographic methods determine the components in the following ranges: oxygen: 0.001% (n/n) to 0.5 % (n/n) helium: 0.001% (n/n) to 0.5 % (n/n) hydrogen: 0.001% (n/n) to 0.5 % (n/n) argon: 0.001% (n/n) to 0.5 % (n/n) nitrogen: 0.001% (n/n) to 40 % (n/n) carbon dioxide: 0.001% (n/n) to 40 % (n/n) methane: 50 % (n/n) to 100 % (n/n) ethane: 0.02 % (n/n) to 15 % (n/n) propane: 0.001% (n/n) to 5 % (n/n) higher hydrocarbons: The method can measure hydrocarbon components from 10.6 (n/n) up to their maximum concentration, which is compatible with the requirement that the gas is free from hydrocarbon condensate at any pressure in the range 1 x 102 kPa to 7 x 103 kPa.

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