Standard Test Method for Determination of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Chemiluminescence

Importancia y uso:

5.1 Many sources of natural and petroleum gases contain sulfur compounds that are odorous, corrosive, and poisonous to catalysts used in gaseous fuel processing.

5.2 Low ppm amounts of sulfur odorants are added to natural gas and LP gases for safety purposes. Some odorants are unstable and react to form compounds having lower odor thresholds. Quantitative analysis of these odorized gases ensures that odorant injection equipment is performing to specification.

5.3 Although not intended for application to gases other than natural gas and related fuels, this test method has been successfully applied to fuel type gases, including refinery, landfill, cogeneration, and sewage digester gas. Refinery, landfill, sewage digester, and other related fuel type gases inherently contain volatile sulfur compounds that are subject to federal, state, or local control. The methane fraction of these fuel type gases is occasionally sold to distributors of natural gas. For these reasons, both regulatory agencies and production and distribution facilities may require the accurate determination of sulfur to satisfy regulatory, production, or distribution requirements. Fuel gases are also used in energy production or are converted to new products using catalysts that are poisoned by excessive sulfur in the feed gas. Industry frequently requires measurement of sulfur in these fuel type gases to protect their catalyst investments.

5.4 Analytical Methods—Gas chromatography (GC) is commonly used in the determination of fixed gas and organic composition of natural gas (Test Method D1945). Other standard ASTM methods for the analysis of sulfur in fuel gases include Test Methods D1072 and D4468 for total sulfur and Test Methods D4010 and D4884 for hydrogen sulfide.

Subcomité:

D03.06.02

Referida por:

D1835-22, D1835-22, D7165-22, D6021-22, D8488-22, D8487-23, D5623-24, D7166-23, D8080-21, D1835-22, D5623-24, D6228-19, D7663-12R24, D7807-20, D7807-20, D7800_D7800M-23, D7493-22, D6228-19, D6228-19, D6228-19

Volúmen:

05.06

Número ICS:

75.160.01 (Fuels in general), 75.160.30 (Gaseous fuels)

Palabras clave:

chemiluminescence detection; gas chromatography; sulfur compounds;