SY/T 6537-2002 in English

This standard specifies the determination methods of components such as hydrogen sulfide, carbon dioxide, sulfur dioxide, total sulfur, sulfur fog, thiosulphate, alcohol amine, sulfolane and triethylene glycol in the gas and solution of natural gas treating plant.
This standard is applicable to gas treatment of natural gas treating plant as well as the determination of components such as hydrogen sulfide, carbon dioxide, sulfur dioxide, sulfur fog and total sulfur in feed gas, treated gas, acid gas, flash gas and sulfur recovery process gas of sulfur recovery unit, and the determination of components such as hydrogen sulfide, carbon dioxide, thiosulphate, alcohol amine, sulfolane, triethylene glycol and water in desulfurization solution.

Foreword I
1 Scope 1
2 Normative References 1
3 Preparation of Solution for Analysis 2
4 Determination of Hydrogen Sulfide Content in Feed Gas and Flash Gas of Gas Treating Unit 7
5 Determination of Hydrogen Sulfide Content in Treated Gas 7
6 Determination of Hydrogen Sulfide, Carbon Dioxide, and the Total Content of Hydrocarbon and Permanent Gas in Acid Gas of Gas Treating Unit 12
7 Determination of the Total Sulfur Content in Feed Gas, Treated Gas, Acid Gas and Flash Gas of Gas Treating Unit 17
8 Determination of Hydrogen Sulfide and Carbon Dioxide Content in the Gas Treatment Process Gas (Gas Chromatography) 17
9 Determination of Hydrogen Sulfide and Sulfur Dioxide Content in the Sulfur Recovery Process Gas 21
10 Determination of Sulfur Fog Content in Sulfur Recovery Tail Gas 26
11 Component Analysis (Gas Chromatography) of Sulfur Recovery Process Gas 30
12 Determination of Water Content in Sulfur Recovery Tail Gas 33
13 Determination of Hydrogen Sulfide Content in Desulfurization Solution 35
14 Determination of Carbon Dioxide Content in Desulfurization Solution 38
15 Determination of Thiosulphate Content in Desulfurization Solution 42
16 Analysis for Composition of Desulfurization Solution (Chemical Method) 44
17 Analysis for the Composition of Desulfurization and Dehydration Solution (Gas Chromatography) 47
Appendix A (Normative) Simple Method for Determining the Hydrogen Sulfide Content in Desulfurization Solution 51