Applications

Analyzer Description

Configuration:

6-valve, packed and capillary columns, methanizer, TCD / TCD / FID

Sample type:

Natural gas, sour gas, other refinery gases

Components separated:

C₁ – C₇, hydrogen, carbon dioxide, hydrogen sulfide, oxygen, nitrogen, carbon monoxide

Lower detection limits:

FID / TCD: 20 ppm for hydrocarbons, 100 ppm for permanent gases, 500 ppm for H₂S

Methanizer / FID: 1 ppm for methane, carbon monoxide, and carbon dioxide

Methods met:

ASTM D1945, ASTM D1946, ASTM D7833, UOP 539, ASTM D2504 Appendix X1, Wasson-ECE 383-MET, 383D-MET

Typical Chromatogram

Key Features and Benefits

• Liquid valves can be added for LPG analysis
• The backflush peak can be tailored to specific samples (e.g. C₆+ or C₈+ backflush composite peaks)
• Can be converted to all capillary columns to achieve better resolution and detection limits
• A fourth FID can be added for the simultaneous analysis of trace carbon oxides

Refinery Gas Literature (PDF)