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From the laboratory to the field – Raman spectroscopy

Scalable PAT solution with Endress+Hauser for greater efficiency, safety, and quality

In partnership with Endress+Hauser, Evonik has successfully integrated Raman spectroscopy as a powerful process analysis technology (PAT) from the laboratory to pilot plants, right through to production. This technology enables real-time measurements, increases efficiency, reduces costs, and improves product quality. It is versatile, scalable and safe. Customers can benefit directly from this expertise to optimize their own development and production processes in a sustainable manner.

View of installed Raman probe, with two technicians in the background ©Endress+Hauser

Specific challenge: Endress+Hauser’s Raman spectroscopy systems also withstand the harsh environment of process plants and comply with ATEX regulations

Technician performing Raman analysis in the laboratory ©Endress+Hauser

Raman analysis in the laboratory

The result

  • End-to-end process analysis from the laboratory to production

  • Real-time measurements possible at multiple measuring points simultaneously, and inline measurements replace manual sampling

  • Also suitable for pilot plants with low volumes

  • Cost reduction through elimination of laboratory evaluations and reduced personnel costs

  • Reliable operation even under difficult conditions (e.g. ATEX zones)

Portrait of Dr. Andreas Ohligschläger, PAT engineer at Evonik

“With Raman spectra, you might be able to assign isolated peaks to individual substances in the mixture. This significantly reduces the calibration effort and quickly leads to quantitative results.”

Dr. Andreas Ohligschläger,
PAT engineer, Evonik Industries AG

The challenge

Evonik was looking for a process analysis technology that would efficiently support the entire development and optimization process while also helping to reduce costs. The goal was to find a solution that not only provides accurate real-time data, but is also versatile enough to be used in a wide variety of process environments: from the laboratory to production; from the R&D lab to large-scale production facilities. In addition, the technology should be quick to integrate in order to shorten development times and reduce time to market.

Our solution

Endress+Hauser provided Evonik with a customized solution based on Raman spectroscopy. The modular systems with optical fibers and flexible probes can be easily integrated into a wide variety of installation situations. Up to four independent channels enable simultaneous monitoring of multiple measuring points – a clear advantage for complex processes. Chemometric evaluations are performed directly on the device in real time. Instead of manual sampling, inline measurement provides continuous, precise data – efficiently and safely, even in ATEX zones.

Solution components:

  • 16 Raman Rxn2 analyzers

  • More than 50 measuring points with Raman probes (various probe types, modular use)

  • Optical fibers for versatile integration

  • Liquiphant Vibronic level switch for ATEX safety