A gas chromatograph (GC) is or has been the de-facto standard for determining the heating value of gas in fiscal metering applications. But the world is in flux and so are the gas sources. Natural gas does not come only from Russia, Norway or Netherlands but also from LNG imports biogas and shale gas. Increasing difference in gas sources require increasing number of measurement points. Processes like burner control or gas turbine powered electricity generation are in need of fast analyzers.
Can the GC cover this or is it time to look elsewhere? In this brief overview we will go over the difference between gas chromatography and correlative measurements; a showdown of the fast and the accurate.
Hans-Peter Smid, Honeywell (namens De Gidts & Feldman BV)