Experimental Investigation on the Effect of Agitation and Flow Rate in Three-stage Continuous Stirrer Tank Reactors Connected in Series for Ethyl Acetate Saponification Reaction | Chapter 11 | Challenges and Advances in Chemical Science Vol. 8

 For the ethyl acetate hydrolysis reaction, a three-stage continuous stirrer tank reactor was investigated. Sodium hydroxide and ethyl acetate were used to test the reaction. For the saponification reaction, the flow rate (40ml/min, 70ml/min, and 100ml/min), agitation rate (minimum, medium, and maximum), and temperature of non-isothermal conditions were all examined. The results of nine tests were analysed, with the initial ethyl acetate and sodium hydroxide concentrations remaining constant throughout. The information was gathered using NaOH (4%) and CH3COONA (6%) solutions. For 40 ml/min flowrate and minimum agitation rate individually, the minimum conductivity values, maximum temperatures, and conversion values of the reaction were 45.2 percent, 66.34 percent at a temperature of 24.9°C for R1, 41.1 percent, 69.53 percent at a temperature of 24.5 for R2, and 40.7 percent, 69.76 percent at a temperature of 24oC for R3. At a temperature of 27.1°C of R1, 30.5 percent and 77.53 percent at a temperature of 27.5°C of R2, and 27.8 percent and 79.59 percent at a temperature of 26.8°C of R3, the minimum conductivity and maximum conversion values were 38.3 percent and 71.59 percent, respectively, based on the medium agitation rate and medium flow rate (70 ml/min). The conversion value increased gradually when the conductivity of the three-stage CSTRs connected in series declined. The findings of this study could help with large-scale product optimization and anticipate the benefits of multiple-stage reactors connected in series, which are particularly well suited to the saponification of ethyl acetate.

Author(S) Details

Emiru Yidnekachew Melesse
Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

Solomon Werkneh
Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

Mulugeta Kebede Gebremeariam
Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

Zelalem Belay Asrat
Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

Dagne Abatie Gesese
Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

Alemu Abdi
Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

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