Abstract
Raman spectroscopy is a powerful non-invasive tool for determining chemical structures. In this paper we report the successful application of Raman spectroscopy to real-time industrial chemical analysis. The Raman spectrum of a mixture from an internal stage of a distillation column has been obtained using 35 m fiber optic extension cables, with a good spectral signal-to-noise ratio. An empirical mathematical model based on correlation between the spectral features and the composition has been developed that provides a root-mean-square uncertainty of less than 2% in the data analysis. The instrumental system consists of a Perkin Elmer 1720 spectrometer, a diode pumped YAG laser, fiber optic probe, a process sample cell and a personal computer. We have previously reported the testing of this system in a laboratory environment. The installation and application of the instrumental system to a bottoms product recovery column at Eastman Chemical Company in Kingsport, Tennessee, is discussed in this article.
| Original language | English |
|---|---|
| Pages (from-to) | 187-192 |
| Number of pages | 6 |
| Journal | Process Control and Quality |
| Volume | 5 |
| Issue number | 2-3 |
| State | Published - Dec 1993 |
| Externally published | Yes |