Modeling of a continuous pretreatment reactor using computational fluid dynamics.

R Eric Berson; Rajesh K Dasari; Thomas R Hanley

doi:10.1385/abab:130:1:621

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Modeling of a continuous pretreatment reactor using computational fluid dynamics.

R Eric Berson·Rajesh K Dasari·Thomas R Hanley

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Abstract

Computational fluid dynamic simulations are employed to predict flow characteristics in a continuous auger driven reactor designed for the dilute acid pretreatment of biomass. Slurry containing a high concentration of biomass solids exhibits a high viscosity, which poses unique mixing issues within the reactor. The viscosity increases significantly with a small increase in solids concentration and also varies with temperature. A well-mixed slurry is desirable to evenly distribute acid on biomass, prevent buildup on the walls of the reactor, and provides an uniform final product. Simulations provide flow patterns obtained over a wide range of viscosities and pressure distributions, which may affect reaction rates. Results provide a tool for analyzing sources of inconsistencies in product quality and insight into future design and operating parameters.

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Bioreactors Carbohydrates Chemical Fractionation Computer Simulation Equipment Design Equipment Failure Analysis Hydrolysis Models, Chemical Plant Components, Aerial Rheology Solubility Sulfuric Acids Viscosity Zea mays Evaluation Study Journal Article Research Support, U.S. Gov't, Non-P.H.S.

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R Eric Berson, Rajesh K Dasari, Thomas R Hanley. 2006. Modeling of a continuous pretreatment reactor using computational fluid dynamics.. https://doi.org/10.1385/abab%3A130%3A1%3A621

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