There are some problems in gas–liquid stirred tank reactor (STR), such as low mass transfer efficiency, high exhaust gas oxygen concentration, and low product conversion rate, due to limitations of stirring speed and input power. This article summarizes the effect of adding circulating jet internals on bubble size distribution, overall gas holdup, gas–liquid volumetric mass transfer coefficient, and power per unit volume of the STR. When circulating jet is added, the average bubble Sauter mean diameter in the STR is reduced to 1.26 mm, and the overall gas holdup is increased to 8.23%, which is an increase of 3.62 times of the original STR. The gas–liquid volumetric mass transfer coefficient is increased to 0.05556 s⁻¹, which is 4.84 times of the original STR. The power per unit volume is increased by only 1.4 times. These data provide references for the design and scale-up of new jet STRs.

中文翻译：

---

用于增强气液搅拌釜反应器中传质的循环射流

由于搅拌速度和输入功率的限制，气液搅拌釜反应器（STR）存在传质效率低、废气氧浓度高、产物转化率低等问题。本文总结了添加循环射流内部构件对气泡尺寸分布、整体气体滞留率、气液体积传质系数和 STR 单位体积功率的影响。加入循环射流后，STR内平均气泡Sauter平均直径减小到1.26 mm，整体含气率提高到8.23%，是原STR的3.62倍。气液体积传质系数提高到0.05556 s ^-1，是原始STR的4.84倍。单位体积功率仅提高1.4倍。这些数据为新型喷射 STR 的设计和放大提供了参考。