Multiscale Analysis to Determine the Sensitive Zones for Temperature Sensor Location in Tubular Reactors

Jazael G. Moguel-Castañeda, Juan L. Hernandez-Ayala, Rafael Gomez-Rodriguez, Juan Rodrigo Bastidas-Oyanedel, Eliseo Hernandez-Martinez*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The sensitivity of benchmark tubular reactors subject to temperature and concentration of external perturbations was investigated. Two case studies were evaluated, a pseudo-homogeneous axial dispersion dimensionless tubular reactor and a heterogeneous tubular reactor to produce maleic anhydride. For the dimensionless reactor model, the highest sensitivities in the reactor were located at the center and at the outlet for temperature and concentration disturbances, respectively, while for the heterogeneous reactor model the sensitivity does not undergo significant changes with feed disturbances. When variations in the most sensitive position occur, a cascade controller can be improved using multiple temperature sensors. The evaluation on weighting assignment of the temperature measurements for the cascade control scheme is also described.

Original languageEnglish
JournalChemical Engineering and Technology
Volume44
Issue number7
Pages (from-to)1259-1269
ISSN0930-7516
DOIs
Publication statusPublished - Jul 2021

Keywords

  • Fixed-bed reactor
  • Multiscale analysis
  • Nonlinear processes
  • Temperature sensors
  • Tubular reactor

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