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Process Raman Gas Analysis in Ammonia Production and Refining

AbstractOn-line process measurement of the composition of gas streams in refining, fertilizer, and other manufacturingindustries is essential for the optimal operation of different process units within these facilities. Processanalyzers based on gas chromatography, mass spectrometry, and electrochemical technologies are commonly used in these facilities. However, process conditions for certain streams present major challenges for these traditional technologies. Techniques based on optical spectroscopy, including near-infrared (NIR), infrared (dispersive and Fourier transform), and Raman spectroscopy, can provide analysis solutions for these challenging stream conditions. Raman spectroscopy is particularly useful for streams containing homonucleardiatomic gases, such as H2 and N2. These gases are key components in many chemical processes involving the creation and use of syngas (H2, CO, and CO2), such as the manufacturing of ammonia and methanol. Hydrogen is also an essential feedstock for the hydrotreating, hydrocracking, and catalytic reforming of varioushydrocarbon …

Improving H2O Measurement in Catalytic Reformer Hydrogen Recycle Streams

On-line, real-time moisture measurements in catalytic reformer hydrogen recycle gas streams help refineries assess catalyst condition and improve process control during normal operation, in-situ catalyst regeneration and dry down.

NASA Based Technology Keeps Contaminants Out of Gas Pipelines

Reliable NASA-based gas analyzer technology keeps natural gas producers aware of moisture content before entering El Paso Natural Gas Company Pipeline – helping producers avoid expensive shut-ins

PinPoint Precision - Sam Miller, SpectraSensors Inc., USA, examines how a TDL based analyser pinpoints moisture intrusion and trace H2S levels in refinery operations.

  The emergence of tunable diode laser (TDL) based technologies has been a major development in many industries, and has created valuable opportunities for refineries and chemical plants to maximise productivity while avoiding high maintenance costs.   By instantly and accurately pinpointing the presence of moisture, HCl, H2S and other impurities in feedstock and fuel gas streams, the TDL based gas analyser is able to provide significant benefits. Among those are the prevention of foreshortened lifespan of costly catalysts, enhanced assurance of product quality, reduced turnaround recovery times, and avoidance of unscheduled shutdowns.   What is a TDL? A tunable diode laser is a type of semiconductor based laser that can be tuned to optically select a very specific wavelength (or colour) of light. NASA’s jet propulsion laboratory (JPL) developed long wavelength (near infrared) tuneable lasers and processor controls that …

TDL Technology Promises Improved Process Control in Gas Plants

Ultra-fast and highly accurate, a new Tunable Diode Laser analyzer technology is replacing conventional sensors at refineries and gas processors, saving on maintenance while providing enhanced control over process integrity.