立体传质塔板（CTST）高效分离塔板技术进展

doi:10.16085/j.issn.1000-6613.2020-0122

摘要/Abstract

摘要：

立体传质塔板（CTST）作为一种结构独特、性能优异的喷射型塔板，具有通量大、效率高、压降低、抗堵性能强、消泡性能好等特点。其优异特性是塔板与其附近气液流场多相耦合作用的结果。本文介绍了CTST塔板结构、压降、持液量等特性，对塔板附近气液流场性能机理进行综述，并进一步总结了CTST的优化方向及近年来的典型应用实例。由于CTST在不改变塔径的情况下替换塔板即可增大处理量和分离效果，能够以最小的投资提高产量，目前已在全世界多个国家和地区成功应用。其中，中国500多家企业的4000多套塔都已成功运行。覆盖了石化、PVA、制药、氯碱、PTA、苯精制/顺酐、化肥等行业。虽然CTST在工程应用上获得了广泛认可，但其作用机理仍有进一步研究的空间。完善CTST性能机理的研究对改进CTST、发展高效分离塔板技术有着重要意义。

关键词: 立体传质塔板, 性能, 优化, 流体力学, 气液两相流, 蒸馏

Abstract:

Combined trapezoid spray tray (CTST) is a novel spray tray with a unique trapezoid spatial structure and excellent characteristics. In gas-liquid co-current contact, the CTST has a lot of advantages, such as high capacity, efficiency and operation flexibility, low pressure drop, excellent anti-blockage performance, and foaming resistance. Such excellent characteristics are the results of multiphase coupling between the tray and its nearby gas-liquid flow field. This paper introduces the characteristics of the CTST, such as structure, pressure drop, and liquid holding capacity, and reviews the performance and mechanism of the gas-liquid flow field near the tray. In addition, it summarizes the optimization directions of CTST and typical application examples of the CTST in recent years. Because the CTST can increase the separation efficiency and processing capacity of the columns without the need of changing the column diameter, it can increase the production with the minimal investment, so that it has been successfully applied in many countries and regions around the world. Among them, over 4000 sets of columns have been successfully operated in more than 500 enterprises in China, covering various industries of petrochemical, PVA, pharmaceutical, chlor-alkali, PTA, benzene refining/ maleic anhydride, chemical fertilizer. Despite all this, the study of its mechanism is still far from completeness, which is of great significance for improving CTST as well as the high-efficiency tray technology.

Key words: combined trapezoid spray tray (CTST), performance, optimization, fluid mechanics, gas-liquid flow, distillation

中图分类号:

TQ053.5

李春利, 段丛. 立体传质塔板（CTST）高效分离塔板技术进展[J]. 化工进展, 2020, 39(6): 2262-2275.

Chunli LI, Cong DUAN. Review of CTST: a high-efficient tray[J]. Chemical Industry and Engineering Progress, 2020, 39(6): 2262-2275.

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