Energetic Study of Gasification System for Bio-Waste as Renewable Energy Resource: Case Study

Abstract:

The expenses, which caused by pollution and limited fossil resources, have convinced scientists to concentrate on renewable resources such as biological waste. Conversion of bio-waste to syntheses gas produces higher heating values in comparison to conventional bioenergy production methods. To produce energy from bio waste, it is important to study on existing technology and using CHP and gas turbines. In this paper a plan for producing electricity and heat at the same time by using bio waste has been proposed. This plan provides a method to produce hybrid gas (combined gas) by using solid bio-waste of Tehran in two forms of wet and dry as a renewable energy resource and steam in a fixed bed gas reactor. This gas is a combination of Hydrogen, Carbon monoxide, Carbon dioxide Water and some amount of Methane. Selected temperature and pressure for the reactor respectively is1900 [˚F] and 390 [Psi]. As indicated in the results, the best air and steam combination entering fixed bed reactor among 60 different combinations for dry waste is 0.2% of entering fuel volume for steam 0.25% of entering fuel volume for air heating value for this combination is 6471 [BTU/lb]. Furthermore, for the steam volumes of 1.5% to 0.9%, the percentage of H₂ in the syngas increases by enhancing the volume of air content.

• Periodical: Defect and Diffusion Forum (Volume 388)
• Pages: 44-60
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.388.44
• Online since: October 2018
• Authors: Mojtaba Mirzaei, Mohammad Hossein Ahmadi*, Mahyar Ghazvini, Ehsan Sobhani, Giulio Lorenzini, Nima Khalilpoor
• Keywords: Biomass, Downdraft, Gasification, Gasifier Fixed Bed, Solid Wastes

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