| 초록 |
Near-Infrared (NIR) Spectroscopy is a newly emerging and very powerful vibrational analytical technique. While the conventional analyzers in refinery require the analysis time of 20 to 180 minutes, NIR can provide highly accurate real-time analytical data in less than one minute. In addition, NIR is cost effective because multiple properties can be simultaneously measured using a single spectrum and it is also safe because the measurement instrument can be located away from hazardous environments using optical fibers. These advantages of NIR Spectroscopy make itself an efficient tool when combined with recent advanced process control or real-time optimization techniques. Since the first application of NIR to gasoline blending in 1993, SK corporation (formerly Yukong) has made an outstanding technology development for the application of NIR spectroscopy into various refinery and petrochemical processes such as Gasoline Blending, Diesel Blending, Crude Distillation, p-Xylene, Naphtha Cracking, Lube Base Oil, Solvent, etc. In this paper, basic introduction to NIR Spectroscopy will be briefly given first and then the actual use of real-time NIR data for the improvement of APC and optimization will be discussed. In the discussion, new concepts of APC and On-line optimization using real-time NIR property data are introduced with the actual examples in SK’s plant sites. Even though more emphasis will be put on the application to Crude Distillation Units, application results to the other processes such as gasoline blending will also be introduced to give audience a general idea of utilizing real-time NIR data to improve operation in the refinery and petrochemical processes.
|
