Numerical study of sodium bicarbonate production in industrial bubble columns

Articles in Press

Document Type : Research Paper

Authors

1 Baghdad

2 Department of Chemical Eering, College of Engineering, Tikrit University, Tikrit, Iraq

Abstract

Aims of this study is to explore the physico-chemical factors that affect sodium bicarbonate synthesis in industrial bubble columns employing CFD simulations The model represents gas-liquid-solid systems, and introduces turbulent phenomena into the model and chemical reactions, as well. Parameter optimizations are undertaken to analyze the operational parameters such as gas flow rate, liquid phase characteristics, column geometry, and reaction kinetics. The study permits one to understand the optimal reaction conditions for maximum NaHCO3 yielding, fast enough kinetic reaction and less un-desired byproducts formation. The work has a role in shaping more productive and environmentally friendly approaches to the synthesis of chemical products.The width of column leads the turbulent mass diffusivity and viscosity increases but the turbulent diffusivity and viscosity decreases. Column pH gradient decreases as column width increases due to the increased liquid amount. Concentration of the solutions falls as the width of the column decreases. For the height of 107 mm, the concentration is 95 mmol/L; this value is 82 mmol/L (the height of 200 mm). Supersaturation increases with column height. For the height of 200 mm, the supersaturation is equal to 0.015 The molar proportion of carbon dioxide in gas is a function of column height, thus 35% at 200 mm and 20% at the air end.

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Main Subjects

Journal of Chemical and Petroleum Engineering

Articles in Press, Accepted Manuscript
Available Online from 10 September 2024

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History

  • Receive Date: 21 July 2024
  • Revise Date: 04 August 2024
  • Accept Date: 12 August 2024

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