Dr Peter Geiser and Dr Viacheslav Avetisov, NEO Monitors, discuss the advantages of using TDLAS analysers for tail gas analysis in sulfur recovery units.

Gas concentration measurements for process control, emissions monitoring and safety purposes are ubiquitous in refineries. The instrumentation is dominated by gas chromatographs, but over the past few years another technology has slowly found its way into many refineries: gas analysers based on tunable diode laser absorption spectroscopy (TDLAS). This article is the first of a […]