Modeling downdraft biomass gasification process by restricting chemical reaction equilibrium with Aspen Plus

Han, Jun; Liang, Yan; Jin, Hangbiao; Qin, Linbo; Street, Jason; Lu, Yonglin; Yu, Fei

doi:10.1016/j.enconman.2017.10.030

Cited by 190 publications

(88 citation statements)

References 32 publications

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“…Using the restricted equilibrium method in the model can achieve better agreement between the simulation and the experiment . In this model, the RGIBBS block makes a choice of the calculation option “Restrict Chemical Equilibrium‐Specify Temperature Method or Reactions,” and the zero temperature approach specification is used in individual reactions. Table lists chemical reactions R1‐R8 that are considered in the gasification process.…”

Section: Methodsmentioning

confidence: 99%

“…A mathematical model adopting the COMMENT code has been used to analyze the effects of multifarious operating parameters . In the event that the existing models and formulas can be further modified by adding additional experimental data, the improved models will predict the product composition more accurately …”

Section: Introductionmentioning

confidence: 99%

“…28 In the event that the existing models and formulas can be further modified by adding additional experimental data, the improved models will predict the product composition more accurately. 32,33 The advantages and disadvantages of certain types of gasifiers are listed in the study by Samiran. 19 The self-moisture gasification of fresh biomass is an innovative method of biomass application that is different from conventional gasification.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Huang

Jin

2019

Energy Science & Engineering

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Biomass gasification is currently a hot research topic. To achieve a high hydrogen content in the product gas, the gasification feedstock used in this study is air‐dried pine woodchips. Experiments are performed in a downdraft gasifier by varying the operation parameters of the particle size (60 mesh, 80 mesh, 100 mesh), temperature point (700, 750, 800, 850, 900°C), and steam‐to‐biomass mass (S/B) ratio (0, 0.7, 1.4, 2.1, 2.8). The main effects of particle size, temperature, and S/B ratio on the composition of the product gas are analyzed to predict the optimal operation parameters of biomass feedstock. For pine woodchip gasification, the optimal particle size is 80 mesh or 0.17 mm, the preferred temperature is 850°C, and the optimal S/B ratio is 1.4. Although there is an error between the experiment and the simulation, the difference is not significant. The Aspen Plus model can provide guidance for the gasification of pine woodchips and can be extended to the gasification of other kinds of biomass.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Huang

Jin

2019

Energy Science & Engineering

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“…Equivalence ratio (ER), gasification temperature, fuel type, moisture content, and gasifying agent [58] Harwood chips gasification Restricting chemical reaction equilibrium Gasification temperature, equivalence ratio (ER), and biomass moisture content [59] Rubberwood, sugarcane bagasse, and sawdust gasification…”

Section: Biomassmentioning

confidence: 99%

Flowsheet Modeling and Simulation of Biomass Steam Gasification for Hydrogen Production

et al. 2020

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Hydrogen production from biomass steam gasification is systematically reviewed. Equilibrium modeling and simulation studies using various techniques for effective hydrogen production are presented. Heat integration, economic analysis of the hydrogen production, and systematic design algorithms research publications are overviewed and discussed for energy‐efficient and economic hydrogen production from various biomass feedstocks. Comparison and analysis of the results strongly suggest the viable potential of biomass steam gasification for hydrogen production from small to large scales with applications for thermal heat, power generation, and many other industrial fields.

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“…Along with the processes of heat and mass transfer, thermodynamic and chemical processes have to be adequately addressed in the models. The equilibrium [8][9][10] and kinetic [11][12][13] approaches are used in most known models. Many kinetic models are based on the concept of a perfectly stirred reactor, considering detailed mechanisms of chemical reactions.…”

Section: Introductionmentioning

confidence: 99%

Thermo-chemical equilibrium modeling and simulation of biomass gasification

2020

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Here, we present the results of numerical studies of biomass gasification using poultry litter, sewage sludge and wood waste (pine shavings) as examples of starting materials. The aim of the study was to find ways to increase the degree of biomass conversion to combustible gaseous products (CO, H2, CnHm) and to achieve high calorific value of the generated synthesis gas. Modeling biomass gasification was performed for a multicomponent reacting system in a state of thermodynamic and chemical equilibrium. The mathematical model and the calculation program created by the authors were used. The presence of a condensed phase in the form of fine particles of solid carbon and ash in biomass gasification products was taken into account. The optimal levels of gasification temperatures and conditions that help minimizing the concentration of solid carbon particles in gasification products were determined. For optimal biomass gasification, we recommend using the thermal energy obtained from burning part of the generated syngas.

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Modeling downdraft biomass gasification process by restricting chemical reaction equilibrium with Aspen Plus

Cited by 190 publications

References 32 publications

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Flowsheet Modeling and Simulation of Biomass Steam Gasification for Hydrogen Production

Thermo-chemical equilibrium modeling and simulation of biomass gasification

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