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天然气处理过程建模技术研究进展

Research progress of modeling technology in the natural gas treatment process

  • 摘要: 天然气作为一种重要的化石能源,在全球能源结构与能源转型过程中占据重要的地位。天然气处理技术对于提升产品气气质、保障设备安全运行及符合环境监管的要求至关重要。然而,由于生产过程涉及多相态、传质、传热及多价态化学反应的复杂耦合,表现出强非线性和动态不确定性,使得传统基于机理模型的建模方法在精度和计算效率方面受到限制。近年来,基于机器学习的数据驱动建模技术通过挖掘过程数据中的内在规律,展现出高度的灵活性与优异的预测精度。但由于缺乏机理约束,其可解释性和外推性仍存在明显不足。为应对上述挑战,机理与数据驱动相结合的混合建模技术逐渐成为研究热点。混合建模技术充分融合了机理模型的物理化学可解释性与数据驱动模型的灵活性和高效性,能够提升复杂化工过程建模的精度、计算效率及模型鲁棒性。综述了机理建模技术、数据驱动建模技术及混合建模技术的研究进展,并探讨了上述技术在天然气处理过程建模中的应用前景和挑战。

     

    Abstract: As an important fossil fuel, natural gas plays an important role in the global energy structure and energy transformation. The natural gas treatment technology is significant for improving product gas quality, ensuring safe operation of equipment, and meeting environmental regulatory requirements. However, due to the complex coupling of multi-phase state, mass transfer, heat transfer, and multivalent state chemical reactions in the production process, it shows strong nonlinearity and dynamic uncertainty, which makes the traditional modeling method based on mechanism model limited in accuracy and computational efficiency. In recent years, data-driven modeling techniques based on a machine learning algorithms has demonstrated high flexibility and excellent predictive accuracy by revealing intrinsic patterns in process data. However, due to the absence of mechanism constraints, its interpretability and extrapolation are still obviously insufficient. In order to cope with the above challenges, the hybrid modeling technology combining mechanism and data-driven has gradually become a research hotspot. Hybrid modeling technology fully integrates the physical and chemical interpretability of the mechanism model and the flexibility and efficiency of the data-driven model, which can improve the accuracy, computational efficiency and robustness of modeling in complex chemical engineering processes modeling. This paper provides a comprehensive review of the research progress for modeling technologies based on mechanism modeling, data-driven modeling, as well as hybrid modeling, and discussed their applications prospects and challenges in natural gas treatment process modeling.

     

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