Thermodynamic Analysis of Biomass Gasification Using Aspen Plus: Comparison of Stoichiometric and Non-Stoichiometric Models

González-Vázquez, M.P.; Rubiera, F.; Pevida, C.; Pio, D.T.; Tarelho, L.A.C.

doi:10.3390/en14010189

Cited by 33 publications

(27 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…on the key output variables (syngas composition, calorific value, etc.) [14,15]. Simulating accurately the performance of a biomass gasifier additionally allows optimizing the gasifier integration in complex energy systems [16,17].…”

Section: Introductionmentioning

confidence: 99%

Study of Energy Valorization of Disposable Masks via Thermochemical Processes: Devolatilization Tests and Simulation Approach

Foffi

Savuto

Stante³

et al. 2022

Energies

View full text Add to dashboard Cite

The COVID-19 pandemic exacerbated the use of medical protective equipment, including face masks, to protect the individual from the virus. This work studies the feasibility of using these materials as fuel for thermochemical processes for the production of syngas. A preliminary physic-chemical characterization was made by means of moisture and ash determination, thermogravimetric analysis, X-ray fluorescence. Afterward, pyrolysis and gasification tests were executed in a laboratory-scale fluidized bed reactor with chirurgical and FFP2 masks investigating four temperature levels and three different operating conditions (fluidizing agents and dry/wet sample). A qualitative and quantitative analysis of condensable aromatic hydrocarbons in the produced gas, collected during the test campaign, was performed employing a gas chromatograph-mass spectrometer. The experimental data from the tests were used to propose a hybrid approach to simulate the gasification process, based on experimental laws for the devolatilization step and a thermodynamic equilibrium approach for char gasification. The resulting data were compared with a thermodynamic equilibrium model, showing that the new approach captures non-equilibrium effects always present in real gasifiers operation.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of Energy Valorization of Disposable Masks via Thermochemical Processes: Devolatilization Tests and Simulation Approach

Foffi

Savuto

Stante³

et al. 2022

Energies

View full text Add to dashboard Cite

show abstract

“…The HCOALGEN method includes different empirical correlations to estimate heat of combustion, enthalpy of formation and specific heat; whereas the DCOALIGT method is based on the empirical correlations from the Institute of Gas Technology (IGT) to estimate density. The most usual physical property methods reported in the literature for modeling gasification processes are PR-BM and RKS-BM [18,19,24,[32][33][34][35], both providing comparable results [36]. The Peng-Robinson cubic equation of state with Boston-Mathias alpha function (PR-BM) was used to estimate all the thermodynamic properties of the conventional components involved in the integrated process.…”

Section: Plant Description and Process Modelingmentioning

confidence: 99%

“…• The integrated gasification plant is operating under steady-state conditions within a zero-dimensional and time independent approach where hydrodynamic effects are disregarded [14, 17-19, 24, 33-35, 37-39]. • Heat losses to the surrounding environment and pressure drops across all unit operations are neglected [19,24,[32][33][34][35][37][38][39]]. • All chemical reactions reach thermodynamic equilibrium conditions and reaction kinetics are not considered [14, 17-19, 24, 33-35, 37-39].…”

Section: Plant Description and Process Modelingmentioning

confidence: 99%

An integrated gasification plant for electric power generation from wet biomass: toward a sustainable production in the olive oil industry

Aguado

Vera

Jurado

et al. 2022

Biomass Conv. Bioref.

View full text Add to dashboard Cite

This research work proposes an integrated gasification plant for simultaneous generation of renewable electricity and drying of olive pomace, a thick sludge with a moisture content close to 60–70% (wet basis), which constitutes by far the most abundant by-product in the Spanish olive oil industry. Due to its massive rate of production and increasing associated transportation costs, olive pomace management currently represents a substantial expense for oil mills. The integrated gasification plant, which can be installed directly at oil mills, consists of a pelletizer, a downdraft gasifier under autothermal operation fueled with dried olive pomace pellets, a producer gas cooling and cleaning unit and a microturbine as power generation unit. The wet olive pomace continuously produced in oil mills is eventually dried in a co-current flow rotary drum dryer with the hot exhaust gases leaving the microturbine at temperatures close to 300 °C, allowing a self-sufficient operation of the integrated gasification plant. The integrated gasification plant was modeled using Aspen Plus® process simulator. The developed model was validated against experimental and simulation results of relevant works. Under optimum operating conditions, the electrical efficiency of the proposed plant is 18.8%, while the additional drying stage allows achieving an overall efficiency of 51.0%. Electricity consumption by the pelletizer and ancillary equipment represents 10–20% of the net electric power generation from the microturbine. However, since the integrated gasification plant is fueled with an inexpensive by-product of olive oil production that is massively produced on-site, the plant performance parameters are remarkably satisfactory.

show abstract

“…Shahabuddin and Bhattacharya [37] investigated the gasification behavior of bituminous coal using different reactants of CO 2 , steam and a mixture of CO 2 and steam under entrained flow gasification conditions at temperatures of 1000 • C and 1200 • C with atmospheric pressure. González-Vázquez et al [38] developed two thermodynamic equilibrium models in Aspen Plus. Both models were validated with experimental data from a semi-pilot scale gasifier using pine kernel shells (PKS) as feedstock.…”

Section: Introductionmentioning

confidence: 99%

Gasification of Woody Biomasses and Forestry Residues: Simulation, Performance Analysis, and Environmental Impact

et al. 2021

View full text Add to dashboard Cite

Wood and forestry residues are usually processed as wastes, but they can be recovered to produce electrical and thermal energy through processes of thermochemical conversion of gasification. This study proposes an equilibrium simulation model developed by ASPEN Plus to investigate the performance of 28 woody biomass and forestry residues’ (WB&FR) gasification in a downdraft gasifier linked with a power generation unit. The case study assesses power generation in Iceland from one ton of each feedstock. The results for the WB&FR alternatives show that the net power generated from one ton of input feedstock to the system is in intervals of 0 to 400 kW/ton, that more that 50% of the systems are located in the range of 100 to 200 kW/ton, and that, among them, the gasification system derived by tamarack bark significantly outranks all other systems by producing 363 kW/ton. Moreover, the environmental impact of these systems is assessed based on the impact categories of global warming (GWP), acidification (AP), and eutrophication (EP) potentials and normalizes the environmental impact. The results show that electricity generation from WB&FR gasification is environmentally friendly for 75% of the studied systems (confirmed by a normalized environmental impact [NEI] less than 10) and that the systems fed by tamarack bark and birch bark, with an NEI lower than 5, significantly outrank all other systems owing to the favorable results obtained in the environmental sector.

show abstract

Thermodynamic Analysis of Biomass Gasification Using Aspen Plus: Comparison of Stoichiometric and Non-Stoichiometric Models

Cited by 33 publications

References 42 publications

Study of Energy Valorization of Disposable Masks via Thermochemical Processes: Devolatilization Tests and Simulation Approach

Study of Energy Valorization of Disposable Masks via Thermochemical Processes: Devolatilization Tests and Simulation Approach

An integrated gasification plant for electric power generation from wet biomass: toward a sustainable production in the olive oil industry

Gasification of Woody Biomasses and Forestry Residues: Simulation, Performance Analysis, and Environmental Impact

Contact Info

Product

Resources

About