Chemical Engineering and Processing: Process Intensification ( IF 4.3 ) Pub Date : 2021-08-22 , DOI: 10.1016/j.cep.2021.108603 Qian Shi 1 , Jonathan C. Gonçalves 2 , Alexandre F.P. Ferreira 2 , Alírio E. Rodrigues 2
The global p-xylene market has demonstrated positive growth thanks to increasing demand for polyester fibers in the textile industry. Additionally, the chemical process becomes a target for energy efficiency; thus, process improvement and intensification have increasingly gained the attention of the scientific community. This article summarizes the advances in the production and separation of xylene isomers. An overview of the aromatics complex is displayed followed by a detailed description of the p-xylene production and separation processes. It summarizes the improvement of the catalysts, adsorbents, advanced materials; processes that strengthen the performance of the existing units, membrane-based processes, and alternative sources in past years. Special attention is given to the Simulated Moving Bed technology for separation; the flushing strategies and model development studies are also addressed. Attention has also been given to the process intensification and the unit combination with other aromatic technologies. A brief review of the latest results of Simulated Moving Bed Reactor and heat integration is also included. In summary, process intensification and integration are promising to save energy and costs, and it also allows flexibility within the feeds and intermediate products, maximizing the advantages of each process.
中文翻译:
二甲苯异构体生产分离研究进展综述
由于纺织行业对聚酯纤维的需求不断增加,全球对二甲苯市场呈现出正增长。此外,化学过程成为能源效率的目标;因此,工艺改进和强化越来越受到科学界的关注。本文总结了二甲苯异构体的生产和分离的进展。显示了芳烃复合物的概述,然后是对p的详细描述-二甲苯生产和分离过程。总结了催化剂、吸附剂、先进材料的改进;提高现有装置性能的工艺、基于膜的工艺和过去几年的替代来源。特别关注用于分离的模拟移动床技术;还讨论了冲洗策略和模型开发研究。工艺强化和与其他芳烃技术的单元组合也受到关注。还包括对模拟移动床反应器和热集成的最新结果的简要回顾。总之,工艺强化和集成有望节省能源和成本,并且还允许进料和中间产品的灵活性,最大限度地发挥每个工艺的优势。