New fiber optic probe use revealed

摘要

During the past 20 years, a custom fiber optic backscattering probe has seen use to monitor and control batch crystalliza-tions at The Dow Chemical Company. U.S. Patents issued to Dow cover the basic probe design, methodology for detecting the onset of crystallization (nucleation), and an energized gasket sealed probe, which survives crystallizer operation. Over the years, we have implemented other practical improvements, but the basic optical design remains unchanged. However, we have never published specific information about how best to use the probe to facilitate successful crystallization batch after batch, until now.