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Residence time distribution studies on recycle reactor with recirculation

  • Arghya Datta , Haripada Bhunia and Raj Kumar Gupta EMAIL logo
Published/Copyright: July 5, 2021

Abstract

Residence time distribution (RTD) experiments provide very important information about the performance of reactors. In the present work, RTD experiments were performed with varying recycle and recirculation rates to see their effect on mean residence time (MRT), flow bypassing and stagnant volume in the reactor. A computer program was developed to solve the model equations using fourth-order Runge–Kutta method. A low bypass flow (<5%) was observed from the experimental RTD curves obtained at different operating conditions. A change in the MRT from 1.2 to 1.8 h was observed at different recycle and recirculation rates. At maximum recycle and maximum recirculation, in the study ranges, a 37% stagnant volume (with exchange) was predicted. In the absence of recycle and recirculation, a 53% stagnant volume (with exchange) was predicted corresponding to the best fit of the experimental RTD data.


Corresponding author: Raj Kumar Gupta, Department of Chemical Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab, 147004, India, E-mail:

Acknowledgments

Authors acknowledge the support from Dr. H. J. Pant, Isotope and Radiation Applications Division, Bhabha Atomic Research Centre, Mumbai, India for carrying out this work.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-07-06
Accepted: 2021-06-23
Published Online: 2021-07-05

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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