Design and hydraulic study of double-partition dividing-wall column

IF 1.4 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Shengyi Guan, Yongshuai Li, Gaoyang Li, Litao Zhu, Hui Pan, Hao Ling
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引用次数: 0

Abstract

Dividing-wall column (DWC) provides tremendous advantages in terms of energy savings and capital costs for three-component and even multi-component separations. With increasing industrial application of three-component DWCs, DWCs for separation of four-component have received considerable research attention. The aim of this work is to investigate the design of the two-staggered wall region and gas–liquid two-phase flow behavior on the tray in a double-partition DWC (DPDWC). The Aspen Plus was applied to simulate the steady state to obtain the gas–liquid-phase flow rate in each region to serve as the basis for the tray design. In different task regions, the gas- and liquid-phase flow varied in some ways. The drag models have variability for the study of fluid flow, and the Tomiyama model is more appropriate. Moreover, high-velocity gradients and recirculating phenomenon can be discovered owing to the existence of multiple partitions in DPDWC.

双隔墙分隔柱的设计与水力研究
分壁柱(DWC)在三组分甚至多组分分离的节能和资金成本方面具有巨大优势。随着三组份 DWC 在工业上的应用越来越多,用于四组份分离的 DWC 也受到了相当多的研究关注。这项工作旨在研究双分区 DWC(DPDWC)中双层交错壁区的设计以及托盘上的气液两相流行为。应用 Aspen Plus 进行稳态模拟,以获得各区域的气液相流量,作为托盘设计的基础。在不同的任务区域,气相和液相流动有一定的差异。在研究流体流动时,阻力模型具有可变性,而富山模型更为合适。此外,由于 DPDWC 中存在多个分区,因此可以发现高速梯度和再循环现象。
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来源期刊
自引率
11.10%
发文量
111
期刊介绍: Asia-Pacific Journal of Chemical Engineering is aimed at capturing current developments and initiatives in chemical engineering related and specialised areas. Publishing six issues each year, the journal showcases innovative technological developments, providing an opportunity for technology transfer and collaboration. Asia-Pacific Journal of Chemical Engineering will focus particular attention on the key areas of: Process Application (separation, polymer, catalysis, nanotechnology, electrochemistry, nuclear technology); Energy and Environmental Technology (materials for energy storage and conversion, coal gasification, gas liquefaction, air pollution control, water treatment, waste utilization and management, nuclear waste remediation); and Biochemical Engineering (including targeted drug delivery applications).
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