Hybrid batch reactor modeling and experimental evaluation of heat transfer process

Niedzwiedz, Malgorzata; Laszczyk, Piotr; Skupin, Piotr; Metzger, Mieczysław

doi:10.1109/mmar.2017.8046962

Cited by 1 publication

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Commonly employed lumped-parameter heat-transfer models , derive from a simplified description of the reactor energy balance, employing assumptions such as perfect mixing on the process side, negligible residence time in the thermal jacket, instantaneous thermal response times, use of an overall heat-transfer coefficient (OHTC), U , and perfect insulation of the process vessel and thermal jacket . Sophisticated on-line control systems for batch reactors , and heat of reaction calorimeters still regularly employ such assumptions in their heat-transfer models.…”

Section: Introductionmentioning

confidence: 99%

“…The assumption employed by the classical adiabatic model that the reactor experiences negligible thermal losses and thus all heat transferred from the jacket accumulates in the process fluid has been shown to hinder the accurate prediction of process temperature profiles, particularly at the laboratory scale, , and merits a revision to the energy balance. Four avenues for thermal losses should be considered.…”

Section: Introductionmentioning

confidence: 99%

“…Advancements in computational power invite the possibility of a more precise representation of jacketed batch reactors, addressing the more onerous assumptions of the lumped model, without excessive computation times. 4 The assumption employed by the classical adiabatic model that the reactor experiences negligible thermal losses and thus all heat transferred from the jacket accumulates in the process fluid has been shown to hinder the accurate prediction of process temperature profiles, particularly at the laboratory scale, 13,18 and merits a revision to the energy balance. Four avenues for thermal losses should be considered.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Non-Adiabatic Model for Jacketed Agitated Batch Reactors Experiencing Thermal Losses

Johnson

Al-Dirawi

Bentham

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Accurate modeling of process temperatures within jacketed batch reactors has the potential to mitigate the risk of thermal runaways and enhance process control. A non-adiabatic heat-transfer model is derived for the investigation of heat transfer in laboratory to pilot-scale reactors of 0.5–40 L. By accounting for heat removed from the process by a total condenser and losses through the process lid, the model is able to predict process temperature profiles within the uncertainty limits of the experimental measurements. Heat losses from the outer jacket wall had a negligible impact on the evolution of process temperature but may contribute significantly to utility costs. Jacket duty measurements implied greater heat accumulation within the reactor vessel than anticipated, equivalent to ∼60% of that in the process fluid at 40 L scale. This raises the potential for heat-transfer coefficients to be systematically under-estimated by adiabatic models, particularly at the laboratory to pilot scale.

show abstract