Intensification of the Rate of Heat and Liquid‐Solid Mass Transfer at the Wall of a Bubble‐Column Reactor by Turbulence Promoters,Chemical Engineering & Technology

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Intensification of the Rate of Heat and Liquid‐Solid Mass Transfer at the Wall of a Bubble‐Column Reactor by Turbulence Promoters
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-03-19 , DOI: 10.1002/ceat.202000616
Ahmed Salah Fathalla ₁ , Nevine Kamal Amin ₁ , El-Sayed Zakaria El-Ashtoukhy ₁ , Gomaa Hanafy Sedahmed ₁

Affiliation

Rates of heat and liquid‐solid mass transfer in a square bubble column with semicylindrical turbulence promoters at its wall were measured using the electrochemical technique in the bubbly flow regime. Turbulence promoters enhanced the wall liquid‐solid mass or analogous heat transfer coefficients and the corresponding volumetric mass transfer coefficients by factors up to 2.36 and 3.76, respectively, depending on the working conditions. The rate of liquid‐solid mass transfer was improved with increasing superficial gas velocity and decreasing turbulence promoter diameter. The importance of the turbulence promoters as a catalyst support and a built‐in cooler was highlighted. Power consumption measurements revealed that the gas‐sparged reactor outperforms the mechanically stirred reactor.

中文翻译：

湍流促进剂增强鼓泡塔反应器壁上的传热和固液传质速率

使用鼓泡流态中的电化学技术测量了在壁面带有半圆柱湍流促进剂的方形气泡塔中的传热和固液传质速率。湍流促进剂根据工作条件分别将壁液体-固体质量或类似的传热系数以及相应的体积传质系数分别提高了2.36和3.76倍。液-固传质速率随着表观气体速度的增加和湍流促进剂直径的减小而提高。强调了湍流促进剂作为催化剂载体和内置冷却器的重要性。功耗测量表明，气体喷射反应器的性能优于机械搅拌反应器。

更新日期：2021-05-17

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