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Energy and exergy analysis of a large scale biomass gasification process

conference contribution
posted on 06.12.2017, 00:00 by Sharmina BegumSharmina Begum, Mohammad RasulMohammad Rasul, Delwar AkbarDelwar Akbar
The economic value of energy processing depends on both quality and quantity of energy. In case of all thermodynamic energy conversion processes (such as gasification and pyrolysis), the conservation of energy (first law of thermodynamics) and the quality of energy (second law of thermodynamics) are significant. This paper presents energy and exergy analysis of a large scale biomass gasification process based on chemical equilibrium considerations. The gasification model was developed on the basis of Gibbs free energy minimisation approach, controlled by mass and energy balances for the system using Aspen Plus. Wood was used as solid waste biomass for this study. Energy and exergy (available energy) losses were analysed by using the composition of dry biomass. The analysis was carried out in an adiabatic system at atmospheric pressure, with input of biomass and air at ambient conditions and steam at atmospheric pressure and temperature of 25°C. The study found that the exergy efficiency of wood waste is 23% and corresponding energy efficiency is 78%.

History

Parent Title

Proceedings of the 9th International Green Energy conference (IGEC-IX), 25-28 May 2014, Tianjin, China.

Start Page

742

End Page

753

Number of Pages

12

Start Date

01/01/2014

Finish Date

01/01/2014

Location

Tianjin, China

Publisher

International Association of Green Energy

Place of Publication

Tianjin, China

Peer Reviewed

Yes

Open Access

No

Era Eligible

Yes

Name of Conference

International Green Energy Conference