Abstract
Near-infrared (NIR) spectroscopy has been utilized for monitoring the pour point of the lube base oil (LBO) process. Using partial least-squares (PLS) regression, necessary spectral features were successfully extracted and correlated to the reference pour-point data. In a preliminary laboratory feasibility study, it was found that PLS calibration performance was largely governed by the accuracy of the reference pour-point analysis. The same NIR spectroscopic methodology was moved to monitor the pour point continuously in an on-line manner. At this time, the NIR spectrometer was calibrated with the existing on-line pour-point analyzer, which was more accurate. In comparison with the on-line pour-point analyzer, NIR spectroscopy provided faster and more repeatable analytical data. With the help of NIR analysis, LBO process variations during product switch can be detected earlier, and necessary process-control strategy can be applied to improve the process efficiency.
| Original language | English |
|---|---|
| Pages (from-to) | 545-550 |
| Number of pages | 6 |
| Journal | Applied Spectroscopy |
| Volume | 57 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2003 May 1 |
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Keywords
- Lube base oil
- NIR
- Near infrared
- On-line process monitoring
- PLS
- Partial least squares
- Pour point
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Near-infrared spectroscopy for on-line monitoring of lube base oil processes. / Chung, Hoeil; Ku, Min Sik.
In: Applied Spectroscopy, Vol. 57, No. 5, 01.05.2003, p. 545-550.Research output: Contribution to journal › Article
TY - JOUR
T1 - Near-infrared spectroscopy for on-line monitoring of lube base oil processes
AU - Chung, Hoeil
AU - Ku, Min Sik
PY - 2003/5/1
Y1 - 2003/5/1
N2 - Near-infrared (NIR) spectroscopy has been utilized for monitoring the pour point of the lube base oil (LBO) process. Using partial least-squares (PLS) regression, necessary spectral features were successfully extracted and correlated to the reference pour-point data. In a preliminary laboratory feasibility study, it was found that PLS calibration performance was largely governed by the accuracy of the reference pour-point analysis. The same NIR spectroscopic methodology was moved to monitor the pour point continuously in an on-line manner. At this time, the NIR spectrometer was calibrated with the existing on-line pour-point analyzer, which was more accurate. In comparison with the on-line pour-point analyzer, NIR spectroscopy provided faster and more repeatable analytical data. With the help of NIR analysis, LBO process variations during product switch can be detected earlier, and necessary process-control strategy can be applied to improve the process efficiency.
AB - Near-infrared (NIR) spectroscopy has been utilized for monitoring the pour point of the lube base oil (LBO) process. Using partial least-squares (PLS) regression, necessary spectral features were successfully extracted and correlated to the reference pour-point data. In a preliminary laboratory feasibility study, it was found that PLS calibration performance was largely governed by the accuracy of the reference pour-point analysis. The same NIR spectroscopic methodology was moved to monitor the pour point continuously in an on-line manner. At this time, the NIR spectrometer was calibrated with the existing on-line pour-point analyzer, which was more accurate. In comparison with the on-line pour-point analyzer, NIR spectroscopy provided faster and more repeatable analytical data. With the help of NIR analysis, LBO process variations during product switch can be detected earlier, and necessary process-control strategy can be applied to improve the process efficiency.
KW - Lube base oil
KW - NIR
KW - Near infrared
KW - On-line process monitoring
KW - PLS
KW - Partial least squares
KW - Pour point
UR - http://www.scopus.com/inward/record.url?scp=0038368138&partnerID=8YFLogxK
U2 - 10.1366/000370203321666579
DO - 10.1366/000370203321666579
M3 - Article
C2 - 14658681
AN - SCOPUS:0038368138
VL - 57
SP - 545
EP - 550
JO - Applied Spectroscopy
JF - Applied Spectroscopy
SN - 0003-7028
IS - 5
ER -