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Reducing Octane Number Loss in Gasoline Refining Process by Using the Improved Sparrow Search Algorithm

Author

Listed:
  • Jian Chen

    (School of Mechanical Engineering, Yangzhou University, Huayangxi Road No. 196, Yangzhou 225127, China)

  • Jiajun Zhu

    (School of Mechanical Engineering, Yangzhou University, Huayangxi Road No. 196, Yangzhou 225127, China)

  • Xu Qin

    (School of Mechanical Engineering, Yangzhou University, Huayangxi Road No. 196, Yangzhou 225127, China)

  • Wenxiang Xie

    (School of Mechanical Engineering, Yangzhou University, Huayangxi Road No. 196, Yangzhou 225127, China)

Abstract

Gasoline is the primary fuel used in small cars, and the exhaust emissions from gasoline combustion have a significant impact on the atmosphere. Efforts to clean up gasoline have therefore focused primarily on reducing the olefin and sulfur content of gasoline, while maintaining as much of the octane content as possible. With the aim of minimizing the loss of octane, this study investigated various machine learning algorithms to identify the best self-fitness function. An improved octane loss optimization model was developed, and the best octane loss calculation algorithm was identified. Firstly, the operational and non-operational variables were separated in the data pre-processing section, and the variables were then filtered using the random forest method and the grey correlation degree, respectively. Secondly, octane loss prediction models were built using four different machine learning techniques: back propagation (BP), radial basis function (RBF), ensemble learning representing extreme gradient boosting (XGboost) and support vector regression (SVR). The prediction results show that the XGboost model is optimal. Finally, taking the minimum octane loss as the optimization object and a sulfur content of less than 5µg/g as the constraint, an octane loss optimization model was established. The XGboost prediction model trained above as the fitness function was substituted into the genetic algorithm (GA), sparrow search algorithm (SSA), particle swarm optimization (PSO) and the grey wolf optimization (GWO) algorithm, respectively. The optimization results of these four types of algorithms were compared. The findings demonstrate that among the nine randomly selected sample points, SSA outperforms all other three methods with respect to optimization stability and slightly outperforms them with respect to optimization accuracy. For the RON loss, 252 out of 326 samples (about 77% of the samples) reached 30%, which is better than the optimization results published in the previous literature.

Suggested Citation

  • Jian Chen & Jiajun Zhu & Xu Qin & Wenxiang Xie, 2023. "Reducing Octane Number Loss in Gasoline Refining Process by Using the Improved Sparrow Search Algorithm," Sustainability, MDPI, vol. 15(8), pages 1-21, April.
  • Handle: RePEc:gam:jsusta:v:15:y:2023:i:8:p:6571-:d:1122186
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    References listed on IDEAS

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    5. Xiaomin Xu & Luyao Peng & Zhengsen Ji & Shipeng Zheng & Zhuxiao Tian & Shiping Geng, 2021. "Research on Substation Project Cost Prediction Based on Sparrow Search Algorithm Optimized BP Neural Network," Sustainability, MDPI, vol. 13(24), pages 1-17, December.
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