Novel design of lubricant-type vacuum distillation process for lube base oils production from hydrocracking tail oil

Pan, Hui; Li, Xinshuang; Shen, Yichao; Wu, Xiaole; Ju, Feng; Li, Yuzhe; Wu, Gaosheng; Ai, Bo; Xu, Baoyun; Ling, Hao

doi:10.1016/j.cjche.2021.04.035

Cited by 2 publications

(1 citation statement)

References 35 publications

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“…Thus, HBO has become one of the preferred feedstocks due to its ability to produce high yields of ethylene, propylene, and butadiene. However, unlike light oils or off-line measurements, HBO is a complicated hydrogenated oil with assorted internal molecular structures [43]. The NIR spectral peaks of the HBO samples overlap significantly.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

Practical Online Characterization of the Properties of Hydrocracking Bottom Oil via Near-Infrared Spectroscopy

Long

Fan

2023

Processes

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Providing real-time information on the chemical properties of hydrocracking bottom oil (HBO) as the feedstock for ethylene cracker while minimizing processing time, is important to improve the real-time optimization of ethylene production. In this study, a novel approach for estimating the properties of HBO samples was developed on the basis of near-infrared (NIR) spectra. The main noise and extreme samples in the spectral data were removed by combining discrete wavelet transform with principal component analysis and Hotelling’s T2 test. Kernel partial least squares (KPLS) regression was utilized to account for the nonlinearities between NIR data and the chemical properties of HBO. Compared with the principal component regression, partial least squares regression, and artificial neural network, the KPLS model had a better performance of obtaining acceptable values of root mean square error of prediction (RMSEP) and mean absolute relative error (MARE). All RMSEP and MARE values of density, Bureau of Mines correlation index, paraffins, isoparaffins, and naphthenes were less than 1.0 and 3.0, respectively. The accuracy of the industrial NIR online measurement system during consecutive running periods in predicting the chemical properties of HBO was satisfactory. The yield of high value-added products increased by 0.26 percentage points and coil outlet temperature decreased by 0.25 °C, which promoted economic benefits of the ethylene cracking process and boosted industrial reform from automation to digitization and intelligence.

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Section: Introduction 1backgroundmentioning

confidence: 99%

Practical Online Characterization of the Properties of Hydrocracking Bottom Oil via Near-Infrared Spectroscopy

Long

Fan

2023

Processes

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Steady‐state and dynamic control of hydrocracking tail oil distillation process for high‐valued products

Li,

Liu,

Gao

et al. 2024

Asia-Pacific J Chem Eng

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The maximum utilization of hydrocracking tail oil becomes increasingly important for petrochemical industry. The aim of this work is to develop optimized distillation processes to achieve various high‐valued qualified oil products from hydrocracking tail oil. Six different oil products is produced and the steady‐state distillation process, which aims to fractionate six qualified narrow distillates is established. The algorithm method incorporating divided‐wall column (DWC) configuration was introduced into the steady‐state design. Compared with traditional separation sequences, the DWC configuration leads to an energy‐saving potential up to 11.17%. Furthermore, effective dynamic control strategies were proposed, demonstrating precise and efficient control performance. In the presence of a 15% feed disturbance, the dynamic control structure is capable of maintaining the product distillation range near the set value. This comprehensive study provides a thorough investigation into the efficient utilization of hydrocracking tail oil, establishing a robust theoretical foundation for its industrial application.

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Novel design of lubricant-type vacuum distillation process for lube base oils production from hydrocracking tail oil

Cited by 2 publications

References 35 publications

Practical Online Characterization of the Properties of Hydrocracking Bottom Oil via Near-Infrared Spectroscopy

Practical Online Characterization of the Properties of Hydrocracking Bottom Oil via Near-Infrared Spectroscopy

Steady‐state and dynamic control of hydrocracking tail oil distillation process for high‐valued products

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