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SS2100 Hydrogen Sulfide In Refinery Fuel Gas
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Part Number: 23402
Manufacturer: SpectraSensors
Manufacturer Part No.: 23402
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Refineries and petrochemical plants burn “Fuel Gas” as a source of fuel for plant heaters, boilers, and furnaces. These plants must regulate the amount of H2S in the fuel gas in order to comply with mandates from the Clean Air Act Amendments (CAAA) of 1990. The SpectraSensors SS2100 H2S Analyzer is a low cost, low maintenance analytical solution that generates extremely reliable measurement of H2S in the fuel gas stream.
H2S in Refinery Fuel: Refinery fuel gas is a collection of light gases generated in various refinery processes that have been processed to remove the valuable heavier components as well as most of the corrosive sulfur compounds such as H2S. These fuels are used extensively in process burners and heaters. Specifically, 40 CFR Part 60, Subpart J, paragraph 60.105 (a) (4) states: “Instead of the SO2 monitor in paragraph (a)(3) of this section for fuel gas combustion devices subject to §60.104(a)(1), an instrument for continuously monitoring and recording the concentration (dry basis) of H2S in fuel gases before being burned in any fuel gas combustion device.” (i) The span value for this instrument is 425 mg/dscm H2S.” The span value of 425 mg/dscm is approximately equal to 300 ppmv H2S.
Online H2S Analyzers: Many refinery sites have installed on-line gas chromatography (GC) systems for this measurement. However, GC’s have a very high initial investment cost and consume carrier gases. Additionally, they require frequent maintenance, especially those utilizing a flame photometric detector (FPD). Lead-Acetate tape systems can be used, which are expensive, use consumables, and require constant maintenance. Additionally, the spent tape is considered hazardous waste and is expensive to dispose.
SpectraSensors' Solution: Only SpectraSensors employs Diff erential TDL spectroscopy to get accurate measurements in the changing background gas composition of fuel 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 by 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 and can be exchanged at a reduced price for a new scrubber.
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.
Key Features:
- No Consumable Gases or Lead Acetate Tapes – Low Cost of Ownership
- No ongoing recalibration - Low maintenance
- Electronics Isolated From the Process Gas – Rugged, Simple design, trouble free operation
- Optical Tunable Diode Laser Technology - Repeatable, fast measurements
- Meets EPA Requirements for 40CFR60 Subpart J Automated 2 –Point daily Validation Included
For More Information, Please Call 866-451-2257 or 805-576-7625. |
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The
SpectraSensors SS2100 H2S Analyzer is a
new, low cost, low maintenance analytical
solution that generates extremely reliable
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