AP-156

The MIDAC Low Moisture in Corrosive Gases Process Professional analyzer forContinuous On-Line Applications

Dr. Peter G. ZemekMIDAC Corporation17911 Fitch AvenueIrvine, California USA 92614Email: sales@midac.com Key Words: FTIR, MIDAC, infrared, process analysis, continuous monitoring, explosiveatmospheres, ammonia, water, H Abstract: Midac has developed a Titan On-Line Process Analyzer for measuringmoisture in corrosive gasses. The system can also be used to simultaneously analyze other target gases at different orders of magnitude in association with low moisture levels. Inlet sample pressures can range from ambient to 5000 PSI. Moisture analytical minimum detection limits (MDL) is approximately 500 ppbv (0.5 ppmv). Other configurations can be used to detect moisture levels at very low ppb concentrations. Sample flow rate range is 0.1 to 2.0 lpm. The system requires plant nitrogen and power.Systems have been incorporated into ammonia plants where low moisture levels in theppm range and ammonia levels in the percent level concentrations are needed in near-real time. Results from installed systems prove high accuracy and precision. Process streams can be accommodated at high pressure and high concentrations. Other contaminants and by-products such as methane and other organics may also be analyzed simultaneously. The system can simultaneously measure ppm water, percent ammonia, and percent methane. The system can operate in Class I Div II environments.
2 O, moisture, methane, on-site analysis, corrosive gases,dewpoint, Titan. Introduction: Analysis for moisture in corrosive gasses has been a challenge for many instrumentaltechnologies. Ammonia is not compatible with many of the moisture measuring techniques employed by ammonia plants such as chemiluminescent dewpoint meters and cold mirror devices. Additionally, simultaneous measurements of moisture, ammonia, and methane can be performed simultaneously and at different orders of magnitude.