Study on hydrodynamics and mass transfer performance of an efficient gas-liquid Circulation Swirl Tray for CO2 absorption

IF 3.7 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-03-11 DOI:10.1016/j.cherd.2025.03.007

Fan Dequn, Zhang Hengrui, Dai Xin, Hu Dapeng

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Abstract

A novel tray for removing carbon dioxide from natural gas is proposed, named Efficient gas-liquid Circulation Swirl Tray (ECST). The cyclone tubes are used as the main working units of it. Utilizing the perforated blades and negative pressure zone generated by swirling flow, a large flux cycle of mixing and separation between gas and liquid can be carried in this tray. The flow field distribution and flow characters of ECST were investigated by CFD simulation. The hydrodynamics and tray efficiency of it have been studied with a CO₂-NaOH system and were compared to Glitsch V1 valve tray. Experiments show that the relative entrainment rate of ECST is always below 0.01 and its weeping critical F₀ is reduced by 15–17 %. When F₀ = 32.3 m/s·(kg/m³)^0.5, the CO₂ absorption amount of ECST can reach 3.9 times that of V1, which highlights its extraordinary capability in enhancing mass transfer efficiency.

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高效气液循环旋流塔板CO2吸收流体力学及传质性能研究

提出了一种新型的去除天然气中二氧化碳的塔盘，称为高效气液循环旋流塔盘（ECST）。旋流管是其主要工作单元。利用旋流产生的穿孔叶片和负压区，可以在该托盘内进行大通量循环的气液混合和分离。通过CFD模拟研究了ECST的流场分布和流动特性。在CO2-NaOH体系中对其流体力学和塔板效率进行了研究，并与Glitsch V1阀塔板进行了比较。实验结果表明，ECST的相对夹带速率始终小于0.01，其渗流临界F0降低了15-17 %。当F0 = 32.3 m/s·（kg/m3）0.5时，ECST的CO2吸收量可达到V1的3.9倍，提高传质效率的能力突出。

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来源期刊

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.