Analyzer uses NIFR spectroscopy to replace gas chromatographs

 
A new process control approach uses near infrared (NIFR) spectroscopy with communication fiber optics. From PetroMetriX Ltd., the Beacon 2000-II system can monitor  processes and provide data for process control. unit2.gif (10811 bytes)

The Gadiv Petrochemical Industries, Ltd. Haifa, Israel, uses 12 field units connected, via a multiplexer and telecommunication fiber optic cable to one main analyzer. The facility is using the monitoring/analyzer system as part of its advanced control/optimization effort. The system is connected to a Honeywell TDC 3000 through a modbus interface.

The NIFR analyzer replaces gas chromatographs (GCs) and it has a faster response time and lower maintenance requirements.

By using the new monitoring/analysis system, the Gadiv plant has benefited in several ways:

  • Due to the nature of the measurements, a periodic update of calibration models has been eliminated.
  • Field units are maintenance-free
  • High instrument resolution allows NIFR to distinguish between xylene isomers.
  • Multiplexing several probes provides cost-efficient analysis at plant points.


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