Prediction of product gas composition from biomass gasification by the method of Gibbs free energy minimization

Khonde, Ruta D.; Hedaoo, Shubham; Deshmukh, Samir K.

doi:10.1080/15567036.2019.1624890

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…The gasification process uses a gasification agent to transform different solid components from the feed-in gaseous compounds; in this case, air was used as a gasification agent. The equations presented below describe the stages that occur during the gasification process [26].…”

Section: Gasification Process Descriptionmentioning

confidence: 99%

Clean Energy from Poplar and Plastic Mix Valorisation in a Gas Turbine with CO2 Capture Process

Slavu,

Dinca

2023

Processes

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The objective of this paper is to explore the utilisation of plastic waste via the gasification process to produce electricity with low carbon dioxide emissions. Worldwide, plastic production has increased, reaching 390 million tons in 2021, compared to 1.5 million tons in 1950. It is known that plastic incineration generates approximately 400 million tons of CO2 annually, and consequently, new solutions for more efficient plastic reuse in terms of emissions generated are still expected. One method is to use plastic waste in a gasifier unit and the syngas generated in a gas turbine for electricity production. The co-gasification process (plastic waste with biomass) was analysed in different ratios. Gasification was carried out with air for an equivalent ratio (ER) between 0.10 and 0.45. The volume concentration of CO2 in syngas ranged from 2 to 12%, with the highest value obtained when the poplar content in the mix was 95%. In this study, the option of pre- and post-combustion integration of the chemical absorption process (CAP) was investigated. As a result, CO2 emissions decreased by 90% compared to the case without CO2 capture. The integration of the capture process reduced global efficiency by 5.5–6.1 percentage points in a post-combustion case, depending on the plastic content in the mix.

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Section: Gasification Process Descriptionmentioning

confidence: 99%

Clean Energy from Poplar and Plastic Mix Valorisation in a Gas Turbine with CO2 Capture Process

Slavu,

Dinca

2023

Processes

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“…The Gibbs reactor block in Aspen Hysys is used for simulating gasification (GBR-100). As the entrained flow gasification occurs at high temperatures, the assumption of equilibrium for all reactions is reasonable, and the same Gibbs reactor was used in several studies in the literature to simulate the gasifier (Weiland, 2015;Jafri, 2016;Yakaboylu, 2016;Pala et al, 2017;Brachi et al, 2018;Furusjö and Jafri, 2018;Gambarotta et al, 2018;Hillestad et al, 2018;Naidoo, 2018;Ferreira et al, 2019;Khonde et al, 2019;Ostadi et al, 2019;Safarian et al, 2019;Tauqir et al, 2019). Devolatilization is endothermic, and the heat duty required will be supplied from the gasifier.…”

Section: Process Model Development and Analysis Model Developmentmentioning

confidence: 99%

Optimal Renewable Energy Distribution Between Gasifier and Electrolyzer for Syngas Generation in a Power and Biomass-to-Liquid Fuel Process

et al. 2022

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By adding energy as hydrogen to the biomass-to-liquid (BtL) process, several published studies have shown that carbon efficiency can be increased substantially. Hydrogen can be produced from renewable electrical energy through the electrolysis of water or steam. Adding high-temperature thermal energy to the gasifier will also increase the overall carbon efficiency. Here, an economic criterion is applied to find the optimal distribution of adding electrical energy directly to the gasifier as opposed to the electrolysis unit. Three different technologies for electrolysis are applied: solid oxide steam electrolysis (SOEC), alkaline water electrolysis (AEL), and proton exchange membrane (PEM). It is shown that the addition of part of the renewable energy to the gasifier using electric heaters is always beneficial and that the electrolysis unit operating costs are a significant portion of the costs. With renewable electricity supplied at a cost of 50 USD/MWh and a capital cost of 1,500 USD/kW installed SOEC, the operating costs of electric heaters and SOEC account for more than 70% of the total costs. The energy efficiency of the electrolyzer is found to be more important than the capital cost. The optimal amount of energy added to the gasifier is about 37–39% of the energy in the biomass feed. A BtL process using renewable hydrogen imports at 2.5 USD/kg H2 or SOEC for hydrogen production at reduced electricity prices gives the best values for the economic objective.

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Investigation of artificial neural network topologies to predict biomass gasification and comparison with a thermodynamic equilibrium model

da Silva Pimentel,

Ferreira dos Santos,

Pradelle

2024

Energy

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Prediction of product gas composition from biomass gasification by the method of Gibbs free energy minimization

Cited by 8 publications

References 11 publications

Clean Energy from Poplar and Plastic Mix Valorisation in a Gas Turbine with CO2 Capture Process

Clean Energy from Poplar and Plastic Mix Valorisation in a Gas Turbine with CO2 Capture Process

Optimal Renewable Energy Distribution Between Gasifier and Electrolyzer for Syngas Generation in a Power and Biomass-to-Liquid Fuel Process

Investigation of artificial neural network topologies to predict biomass gasification and comparison with a thermodynamic equilibrium model

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