• Skip to main content

NMR Testing Laboratory

Industrial NMR Spectroscopy Applications

  • Home
  • About Us
    • About Process NMR
    • Our History
    • Facilities
    • Applications
    • Chemometrics
    • News and Events
  • Services
    • Price List
    • Submission Form
    • Liquid NMR
    • Solid NMR
    • Benchtop NMR
    • Consulting
    • Automated Applications
    • Expert Witness
  • Expertise
    • CV
    • Presentations
    • Reviews and White Papers
  • Blog
  • Contact

Piona-et Cracker

Full GC-PIONA Carbon Number Analysis Performed by On-Line Process NMR Spectroscopy

Customer Application Note – Steam Cracker Optimization at BASF Ludwigshaven (pdf)

A 60 MHz process FT-NMR spectrometer has been installed on the feedstream to a naphtha cracker in several locations to provide detailed PIONA analysis, every two minutes, for input into APC/optimization packages. The NMR technique utilizes high-resolution FT-NMR proton spectra in conjunction with partial least squares modeling techniques to obtain highly linear and robust predictive models. Modeling requirements are limited and on-line models contain only around 300-500 data points with minimum model maintenance required. Single predictive models are used to predict across the entire variability range of each property. Table A shows the performance of the NMR models compared to the laboratory GC over a four month period where the NMR was available for >99.5%.

Table A – Correlation and Standard Deviation Summary of NMR-Lab GC Reproducibility

The following figures show the spectral variability observed in various naphtha streams as well as the lab-NMR agreement plots for several of the detailed PIONA parameters.

















  • Home
  • About Us
  • Services
  • Expertise
  • Blog
  • Contact

Copyright © 2023 · Process NMR · All Rights Reserved.
Handcrafted with by Studiodog Group