DEM simulation of biomass pyrolysis in a novel interconnected screw reactor
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Wentao Ou
Abstract
A novel interconnected screw reactor was proposed to convert biomass to bio-oil and bio-char in this study. This reactor is expected to achieve direct heating of pyrolysis feedstocks and increase the reactor processing capacity through the recycling of biochar between the inner and outer screw. Here, we simulated the biomass particle flow and reaction process in this interconnected reactor by an extended discrete element method (DEM), the effect of char circulation on the reactor temperature distribution and the product yields are investigated. The results show that the char circulation increased the heating rate of biomass. At the inner and outer screw speed of 10 rpm and 1 rpm, the char circulation can reach 5.15 kg/h and the average temperature of biomass under the char circulation is about 30 °C higher than that without char circulation. The reaction simulation results show that at 500 °C, the yield of char, bio-oil and non-condensable gas are 18.9%, 40.6% and 40.5% respectively. The predicted product yields of char, bio-oil and non-condensable gas are also in good agreement with the experimental measurements.
Acknowledgments
The authors gratefully acknowledge National Natural Science Foundation of China (Grant No. 51906041) and the Natural Science Foundation of Jiangsu province (Grant NO. BK20190360).
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Articles
- Enhanced mechanical stirring by eccentric impeller stirring system in zinc hydrometallurgy process for cadmium removal
- DEM simulation of biomass pyrolysis in a novel interconnected screw reactor
- Numerical and experimental investigations on enhancement mixing performance of multi-blade stirring system for fluids with different viscosities
- The technical and economic analysis of processing and conversion of heavy oil cuts to valuable refinery products
- Effect of inlet gas velocity on gas-solid fluidization characteristics in fluidized bed
- Investigation into a multiple input/output bifurcated biochemical reaction with substrate inhibition in a real CSTR based on Cholette’s model
- Performance of photocatalytic oxidation surface with new geometry for indoor environment application: experimental and simulation
- Optimization of hydrothermal liquefaction process for bio-oil products from kitchen residue under subcritical conditions
- Value-added biochar production from microwave pyrolysis of peanut shell
- Short Communications
- Environmentally sustainable synthesis of cyclic carbonates from epoxides and CO2 promoted by MCM-41 supported dual imidazolium ionic liquids catalysts
Artikel in diesem Heft
- Frontmatter
- Articles
- Enhanced mechanical stirring by eccentric impeller stirring system in zinc hydrometallurgy process for cadmium removal
- DEM simulation of biomass pyrolysis in a novel interconnected screw reactor
- Numerical and experimental investigations on enhancement mixing performance of multi-blade stirring system for fluids with different viscosities
- The technical and economic analysis of processing and conversion of heavy oil cuts to valuable refinery products
- Effect of inlet gas velocity on gas-solid fluidization characteristics in fluidized bed
- Investigation into a multiple input/output bifurcated biochemical reaction with substrate inhibition in a real CSTR based on Cholette’s model
- Performance of photocatalytic oxidation surface with new geometry for indoor environment application: experimental and simulation
- Optimization of hydrothermal liquefaction process for bio-oil products from kitchen residue under subcritical conditions
- Value-added biochar production from microwave pyrolysis of peanut shell
- Short Communications
- Environmentally sustainable synthesis of cyclic carbonates from epoxides and CO2 promoted by MCM-41 supported dual imidazolium ionic liquids catalysts
