Abstract

Vortex contact devices for gas introduction have been developed and studied. The devices make it possible to increase the gas and liquid loading on stages compared with valve and cap devices, to reduce the fluctuations of the gas–liquid medium on the liquid surface, and to increase the separation efficiency. Based on the experimental studies and numerical modeling, a scheme of liquid and gas motion at the stage was developed, and the velocity profiles during bubbling were calculated. The stage parameters were determined: hydraulic resistance, gas content, average surface diameter of bubbles, interphase surface area, efficiency, and mass transfer coefficients. The dependences for their calculation were presented. A vortex stage for the exhausting distillation column was designed, which provides a 1.5-fold reduction of metal consumption and increased efficiency at a velocity factor of up to 3 Pa^0.5 and spray rate of 78 m³/(h m²) compared with the standard cap plate.

中文翻译：

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涡旋阶段和起泡过程中的流体动力学和传质

摘要

已经开发和研究了用于气体引入的涡流接触装置。与阀和盖装置相比，该装置可以增加级上的气体和液体负载，减少液体表面上气液介质的波动，并提高分离效率。在实验研究和数值模拟的基础上，提出了阶段内液体和气体运动的方案，并计算了鼓泡过程中的速度分布。确定了阶段参数：水力阻力，气体含量，气泡的平均表面直径，相间表面积，效率和传质系数。提出了用于计算的依赖性。设计了用于排气蒸馏塔的涡流级，提供了一个1。与标准盖板相比，喷洒速率为^0.5，喷洒速率为78 m ³ /（hm ²）。