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Hydrogen Sulfide in Flare Gas

 
Only SpectraSensors employs Differential TDL spectroscopy to get accurate measurements in the changing background gas composition of flare gases. The sample is scrubbed using a proprietary Copper nanoparticle absorbent that removes only H2S, and the background spectrum is acquired. Then the spectrum of the raw, un-scrubbed sample is acquired and the background spectrum is subtracted, leaving only the laser light absorbance due to H2S. The same background spectrum can be used until the background gas changes which is detected automatically by the smart controller logic looking at the background spectrum. Since the scrubber is only used intermittently, its lifetime is typically a minimum of 18 months. Software calculates the loading of H2S on the scrubber and gives a warning when it is time to replace the scrubber, and an indicating scrubber downstream warns if the scrubber fails prematurely. The scrubber is easily replaced in a few minutes; the spent scrubber contains no hazardous materials.
 
The laser and detector are isolated from the sample and protected against corrosive gases. The analyzer is extremely fast (typically 16 sec/measurement) and the results are highly reliable. Requiring no consumable gases or lead acetate tapes, the cost of ownership is extremely low.
 
                                          Application Note 23302
                                          CSA Typical Drawing
                                       
 
 

Products

Model Description  Certification
SpectraSensors SS2100 Process Gas Analyzers are exceptionally reliable for measuring trace gas components using Tunable Laser Diode (TDL) technology.
 
CSA Class I Division 2
SS2100a
SpectraSensors SS2100a Process Gas Analyzers are exceptionally reliable for measuring trace gas components using Tunable Laser Diode (TDL) technology.
 
ATEX Zone 2
SpectraSensors SS2100i-1 Process Gas Analyzers are exceptionally reliable for measuring trace gas components using Tunable Laser Diode (TDL) technology.
 
ATEX and IECEx Zone 1
SpectraSensors SS2100i-2 Process Gas Analyzers are exceptionally reliable for measuring trace gas components using Tunable Laser Diode (TDL) technology.
 
ATEX, IECEx and GOST-R Zone 1