Study on Kinetics of Straw Stalk Gasification in CO₂ with Random Pore Model

Abstract:

The gasification of straw stalk in CO₂ environment was studied by isothermal thermogravimetric analysis. The characteristics of rice straw and maize stalk gasification at different temperatures were examined under CO₂ atmosphere. The relationship between reaction time and carbon conversion of two biomass chars was analyzed by the random pore model (RPM), and compared with the simulation of the shrinking core reaction model (SCRM). The results show that the random pore model is better to predict the experimental data at different temperatures. This means that the characteristics of pore structure for the influence of biomass chars gasification is well reflected by parameter ψ used in RPM. It indicates that the RPM can be applied to the comprehensive simulation of biomass chars gasification in CO₂ environment.

• Periodical: Applied Mechanics and Materials (Volume 618)
• Pages: 316-320
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.618.316
• Online since: August 2014
• Authors: Hua Fei*, Jin Ming Shi, Yuan Lin Li, Kai Luo
• Keywords: CO₂, Kinetic, Random Pore Model, Straw Stalk

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