When measuring the water concentrations in an Ethylene Glycol (EG) sample, NIR Spectroscopy is the technology of choice. Ethylene Glycol and its derivatives are used across a wide range of industries including automotive, polyester fibers and resins, pharmaceuticals, food and beverage processing, pipeline maintenance, textiles, aviation, medical, and HVAC.
The most important variable affecting the glycol production is properly managing the water-to-oxide ratio. In commercial plants, improvement in yields can occur with a large excess of water under controlled pH levels in the solution. Tim Felder, President of Felder Analytics, a thirty-five-year veteran in applied process analytical technologies (PAT) states, “The trick is to measure and control the level of water to prevent any uncontrolled exothermic reaction. When this is done, both safety and yields are improved in the process.” He continues, “Guide Wave’s technology was selected by a leading worldwide EG producer as the most achievable control technology for measuring this process.”
Many EG manufacturers prefer using Guided Wave’s NIR instruments, due to the state-of-the-art design, repeatability, stability and elimination of drift. Both analyzers, the full spectrum NIR-O spectrometer or the ClearView db photometer make managing this measurement efficient. Either analyzer can be used successfully, the choice depends on the complexity of the application (i.e., number of measurements, varying chemistries, number of sample points and measurements). View the Feasibility Study