A mathematical model for Pyrolysis of biomass

Fernando, Niranjan; Amin, Muhammad; Narayana, Mahinsasa; Jayawickrama, Thamali; Asadumllah,; Jayasena, Sanath

doi:10.1109/mercon.2015.7112311

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…compounds with and without complex polycyclic aromatic hydrocarbons (PAHs) [43][44][45]. A simple one-step global reaction model has been widely accepted to model the pyrolysis processes reactions developed by Di Blasi [46,47] and Fernando et al [48].…”

Section: The Pyrolysis Zonementioning

confidence: 99%

Optimisation of a throat downdraft gasifier for hydrogen production

Prasertcharoensuk

Hernandez²,

Bull

et al. 2018

Biomass and Bioenergy

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Gasification of coal is a well-known technology used to convert solid coal into gas (syngas). The implementation of gasification for waste and biomass still requires attention due to the difference in nature of biomass compared to coal. Although, modification to a gasifier is one of the main approaches to achieve high quality syngas production (high H2/CO ratio) and to eliminate tar formation, the effect of design of the gasifier has not been studied. Downdraft gasifiers are reported to produce relatively high quality syngas with low tar concentration compared to other designs. Therefore, in this study a 20 cm diameter throat downdraft gasifier was numerically optimised using Computational Fluid Dynamics modelling. The effect of throat diameter and the position of the air inlet nozzles above the throat on the properties of the gas and the temperature profile in the gasifier was systematically investigated and validated using experimental data. The throat diameter and the position of the air inlet nozzles had a significant effect on the properties of the gas and temperature profile. The modelling and experimental results agreed very well with less than 5% deviation. This confirms that the numerical approaches are valid and can be used in scaling up biomass gasification, reducing process development time from laboratory scales to pilot/industrial scales. The maximum concentration of H2 2 (31.2%mol) and highest H2/CO ratio (1.25) was found at a ratio of throat diameter to gasifier diameter of 0.40 and the position of the air inlet nozzles at 10 cm above the throat.

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Section: The Pyrolysis Zonementioning

confidence: 99%

Optimisation of a throat downdraft gasifier for hydrogen production

Prasertcharoensuk

Hernandez²,

Bull

et al. 2018

Biomass and Bioenergy

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“…Conversion of biomass into biofuels or bioenergy can be performed by several processes or methods, such as mechanical, biochemical, thermochemical and combined processes [13][14][15]. The criteria for choosing the biomass conversion processes depend on many factors, such as biomass properties, final fuel or energy forms, utilization target, cost, storage and transportation, as well as the social and environmental impacts [16][17][18].…”

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confidence: 99%

Physiochemical Characterization and Potential of Synthesis Gas Production from Rubber Wood Biomass by Using Downdraft Gasifier

Sultan

Palamanit

Techato

et al. 2021

Mehran Univ. res. j. eng. technol.

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Bioenergy has gained great interest in the recent years for being environmentally friendly and renewable energy resource. Southern Thailand is well-known for agro-industry including rubber tree plantations and processing, which provide biomass that could be applied to produce bioenergy. Thus, this study aimed to investigate the energy potential of Rubber Wood Chips (RWC), Rubber Wood Pellets (RWP), Unburned Char (UBC) from rubber wood, blended RWC:UBC (50:50%) and blended RWP:UBC (50:50%). The physiochemical properties including bulk density, proximate composition, ultimate composition, heating value, Thermogravimetric Analysis (TGA), and lignocellulose content were determined for the biomass samples. The thermochemical conversion of biomass to syngas was performed using a downdraft gasifier operated at equivalence ratio 0.3. The results showed that the biomass was rich in carbon (content ranging from 44.77 to 58.54%) making it suitable for use as a solid fuel for gasification or combustion. The moisture contents of the biomass samples were below 10%. The contents of volatile matter in RWC and RWP were 74.40 and 75.40%, respectively. The UBC had a high fixed carbon content (50.60%) and comparatively low volatile matter (19%). The bulk densities of RWC, RWP and UBC were 193, 555 and 177 (kg/m3), respectively. The TGA showed the maximum weight loss of RWC and RWP around 400 °C, but this was at 800 °C for UBC. The higher heating values of RWC, RWP and UBC were 17.8 MJ/kg, 17.4 MJ/kg and 19.3 MJ/kg, respectively. The RWC and RWP had high cellulose and hemicellulose contents while UBC was rich in lignin. The syngas obtained from any of these biomass samples was mainly CO (10.81-22.67%) and CH4 (0.06-3.16%) with the lower heating value ranging from 2.78 to 4.72 MJ/Nm3. These results indicate that rubber wood biomass in various forms has relatively high potential for bioenergy applications via gasification, and it can help to support the renewable energy sector in Thailand.

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Recovery of liquid fuel from fossil-based solid wastes via pyrolysis technique: A review

Abnisa

Alaba

2021

Journal of Environmental Chemical Engineering

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A mathematical model for Pyrolysis of biomass

Cited by 6 publications

References 9 publications

Optimisation of a throat downdraft gasifier for hydrogen production

Optimisation of a throat downdraft gasifier for hydrogen production

Physiochemical Characterization and Potential of Synthesis Gas Production from Rubber Wood Biomass by Using Downdraft Gasifier

Recovery of liquid fuel from fossil-based solid wastes via pyrolysis technique: A review

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