Teledyne Analytical Instruments | Series 6400-TSG Total Sulfur in Fuel Gas Analyzer

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Series 6400-TSG Total Sulfur in Fuel Gas Analyzer

Using UV-Fluorescence detection technology


Series 6400-TSG Total Sulfur Analyzer
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The 6400-TSG utilizes a flame combustion converter module (FCCM) with field-proven UV-Fluorescence technology to detect all sulfur compounds in a gas stream. The analyzer includes sample conditioning system to properly handle a variety of sample compositions, including fuel/combustible gases, with minimal maintenance.

Advantages

Ranges from 0-200 ppb to percent levels - detection as low as 10 ppb
Continuous reading updates - no switching valve to service
Non-consumable sensing technology
High-temperature flame of FCCM ensures complete sulfur conversion
No maintenance of FCCM expected in first two years of service
No pure oxygen required as a utility gas
Single and multiple sequenced stream configurations available
Class I Div 1 (Zone 1) and Class I Div 2 (Zone 2) configurations available

6400-TSG Theory of Operation

The undesirable sulfur compounds present (i.e. H2S, DMS, COS, CH3SH, CS2, etc) are converted into sulfur dioxide (SO2) under precisely controlled temperature and flow conditions.

SO2 + hv¹ -> SO2*-> SO2 + hv²

When SO2 is exposed to UV light energy, hv1, it creates an "excited" form of sulfur dioxide, SO2*. A molecule in a high, vibrational level of the excited state, SO2*, will quickly fall to its lowest vibrational level by losing energy to other molecules through collision. Fluorescence occurs when the molecule returns to its electronic ground state. The intensity of the emitted light, hv2, is directly proportional to the total sulfur content found in the sample.

TAI'S Model 6400-TSG utilizes a flame combustion converter module (FCCM) which provides a complete combustion conversion of the sulfur compounds present under the intensity of a hydrogen flame. The FCCM approach is best suited for gas phase applications where the analyzed sample is either steady-state or having a wide variation in the hydrogen or hydrocarbon content. Furthermore, the FCCM approach also provides a truly continuous analysis providing a real-time indication of the total sulfur content present in the sample gas. The FCCM is capable of oxidizing raw or unrefined fuels without coking and no carrier gas or switching valves are necessary.

The converted sample gas is dried, then fed to the Model 6400E UV Fluorescence Analyzer where the SO2 Analysis takes place and is conveniently displayed as Total Sulfur.

Applications Areas:

Refinery (Steam Methane Reformer, Flare - Rule 1118, Incoming Fuel)
Natural Gas Processing Plants (H2S - acid gas removal)
Carbon Dioxide Quality Control (CDQC)

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