Efficient optimization-based design of energy-integrated distillation processes
Efficient optimization-based design of energy-integrated distillation processes
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DOI：
10.1016/j.compchemeng.2019.106520
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发表时间：
2019-10
期刊：
影响因子：
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通讯作者：
T. Waltermann;M. Skiborowski
中科院分区：
文献类型：
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作者：
T. Waltermann;M. Skiborowski
虽然蒸馏法只提供较低的热力学效率，但它仍然是化学工业中分离液体混合物的默认选择。幸运的是，已经提出了各种能源整合的概念来提高能源效率。然而，在潜在的替代方案中选择成本最优的过程是繁琐的，因为必须对每种特定分离评估不同选择的性能。因此，需要严格设计的有效手段，以便对竞争的替代方案进行比较。为此，本文提出了一种计算效率高的方法，用于各种能量集成蒸馏序列的严格优化设计，并对将多组分混合物分离成三个产品流的16种不同工艺变体进行了演示。对理想、非理想和共沸混合物的分离进行了实例研究，证明了该方法在确定经济上具有吸引力的能量集成蒸馏过程方面的计算效率和有效性。
While providing only low thermodynamic efficiency, distillation is still the default option for the separation of liquid mixtures in the chemical industry. Fortunately, various concepts for energy integration have been proposed to improve the energy efficiency. Yet, the selection of the cost-optimal process among the potential alternatives is tedious, as the performance of the different options has to be evaluated for each specific separation. Thus, efficient means for rigorous design are required, that allow for a comparison of the competing alternatives. For this purpose, a computationally efficient method for a rigorous optimization-based design of various energy-integrated distillation sequences is proposed in the current article and demonstrated for 16 different process variants for the separation of a multicomponent mixture into three product streams. The application to three case studies, including the separation of ideal, non-ideal and azeotropic mixtures, demonstrates its computational efficiency and effectiveness in identifying economically attractive energy-integrated distillation processes.