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Tuesday, August 19, 2014
Sasol has two advanced FTIR analyzers employed to monitor multiple gas concentrations simultaneously in laboratory scale reactors at the South African firm’s ]Research and Technology Center. The monitors, which were supplied by Gasmet Technologies (Finland), are being used to study changes in gas composition during the preparation of Fisher Tropsch catalysts which are used in GTL processes.
Sasol’s Nishlan Govender, a senior scientist in Fischer Tropsch research, uses the FTIR analyzers to determine the completion of a reaction in the preparation of a Fischer–Tropsch catalyst by tracking the tail composition in the reactor. This includes the analysis of CO, CO2, CH4, H2O and hydrocarbons up to C6. The H2O measurements are corroborated by readings from a dewpoint analyzer that is used routinely in the laboratory.
Both of the FTIR analyzers (DX4000) are used in conjunction with Gasmet portable sampling systems which utilize a ‘hot-and-wet’ measurement principle, so that a truly representative sample is analyzed with no requirement for drying or dilution. This portable technology was chosen because it can be quickly and simply deployed, producing highly accurate readings for up to 50 compounds simultaneously.
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