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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >EXPLORATION OF SPINNING CONE COLUMN CAPACITY AND MASS TRANSFER PERFORMANCE USING CFD
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EXPLORATION OF SPINNING CONE COLUMN CAPACITY AND MASS TRANSFER PERFORMANCE USING CFD

机译：探索旋转锥柱容量使用计算流体动力学传质性能

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摘要

The effects of changes in the geometry of a spinning cone distillation column (SCC) on the device capacity and mass-transfer performance have been explored using a two-phase liquid-gas computational fluid dynamics (CFD) model.Contributions of the inner and the outer liquid sprays to the volumetric mass-transfer coefficient have been separately analysed.With the increase in fluid flow rate,the mass transfer from the inner spray is predicted to rise proportionally (pre-loading regime),then pass through a maximum and decline (loading regime).The variation is associated with the changing position of the inner spray in the throat,with the maximum in mass transfer corresponding to the largest extent of the spray.The mass transfer rate from the outer spray is predicted to increase linearly with the flow rate in both the pre-loading and the loading regimes.The position and the extent of the outer spray are predicted to be almost unaffected by the intensity of the gas flow.The limit of the column capacity,in terms of the maximum flow rate attained at the threshold of flooding,rises in proportion to the inner throat area.For a given SCC design,the optimal value of a throat opening parameter is found to be C=0.25 (compared with the actual C=0.16).This configuration will provide a approx 15% increase in the rate of mass-transfer and approx 40% increase in the maximum capacity of the column.
机译：的几何变化的影响旋转锥蒸馏塔(SCC)设备能力和传质性能一直在探索使用两阶段-气计算流体动力学(CFD)模型。容积传质液体喷雾剂系数分别进行分析。液体流量的增加,传质从内喷雾预计上升比例(预装政权),然后通过通过一个最大和衰退(加载政权)。改变位置内喷的最大的喉咙,传质对应于最大的程度喷雾。预计增加的线性流预装载和装运政权。喷雾预计几乎未受影响气流的强度。柱容量,最大流量达到阈值的洪水上涨比例内的喉咙。鳞状细胞癌设计,炉口的最优值参数是发现C = 0.25(与之相比实际的C = 0.16)。提供一个大约增加15%的速度传质和增加约40%列的最大容量。

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