Investigation of hydrodynamic performance and effective mass transfer area for Sulzer DX structured packing
Investigation of hydrodynamic performance and effective mass transfer area for Sulzer DX structured packing
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苏尔寿 DX 规整填料的流体动力性能和有效传质面积研究
DOI：
10.1002/aic.16346
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发表时间：
2018-07
期刊：
影响因子：
3.7
通讯作者：
Liang Zhiwu
中科院分区：
文献类型：
--
作者：
Gao Hongxia;Liu Sen;Luo Xiao;Zhang Haiyan;Liang Zhiwu
在 293.15 K 和 101.3 kPa 下研究了苏尔寿 DX 规整填料的压降 (▵P) 和持液率 (hL) 以及有效传质面积 (ae) 方面的流体动力学性能。此外，还根据持液率实验结果计算了驱油速度（uF），并结合Billet模型和实验有效分数得到了有效空隙率修正因子（ς）。液体体积法和塔填料方法下方与上方的压力差用于描述规整填料塔中的流体动力性能。实验结果表明，气体流量、液体流量、粘度和液体系统等操作条件强烈影响流体动力性能。空气-水（聚环氧乙烷[PEO]）和MEA-H2O-CO2系统中压降曲线的实验比较表明，反应MEA和CO2分压都可以提高压降值。此外，还建立了Bain-Haugen相关模型来预测水淹速度数据，可接受的AARD为8.1%，并成功提出了预测持液率的模型，AARD为11.8%，低于Billet模型的14.7%。此外，发现使用 NaOH-H2O-CO2 系统增加液体和气体流速可以增加有效传质面积。还提出了一个模型来计算实验结果，可接受的 AARD% 为 19.52，并且所建立的模型（方程 39）可以合理地解释实验现象。 © 2018 美国化学工程师学会AIChE J, 64: 3625–3637, 2018
The hydrodynamic performance in terms of pressure drop (▵P) and liquid holdup (hL), and tshe effective mass transfer area (ae) of Sulzer DX structured packing were investigated at 293.15 K and 101.3 kPa. In addition, the flooding velocity (uF) was also calculated based on the experimental results of liquid holdup, and the effective voidage correction factor (ς) was obtained by combining the Billet model and the experimental effective fraction. The liquid volume method and pressure difference from just below to above the column packing approach are used to describe the hydrodynamic performance in a structured packing column. Experimental results showed that the operational conditions in terms of gas flow rate, liquid flow rate, viscosity, and liquid systems strongly affect the hydrodynamic performance. The experimental comparison between the pressure drop profiles in air‐water (polyethylene oxide [PEO]) and MEA‐H2O‐CO2systems indicated that both the reacting MEA and CO2partial pressure can enhance the pressure drop value. In addition, the Bain‐Haugen correlation model was developed to predict the flooding velocity data with an acceptable AARD of 8.1%, and a model was also successfully proposed to predict the values of liquid holdup with an AARD of 11.8%, which is lower than 14.7% in Billet model. Furthermore, the effective mass transfer area was found to be increased by increasing both the liquid and gas flow rate by using NaOH‐H2O‐CO2system. A model was also proposed to calculate the experimentalaewith an acceptable AARD% of 19.52, and this built model (Eq. 39) can reasonably explain the experimental phenomenon. © 2018 American Institute of Chemical EngineersAIChE J, 64: 3625–3637, 2018
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