Biomass (and Wastes) Gasification - a Contribution to Renewable Energy Technologies

Biomass (and Wastes) Gasification - a Contribution to Renewable Energy Technologies

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Utilising biomass represents one of renewable energy technologies. In spite of the fact that its production and a possible utilisation cannot from the energy potential point of view compete with fossil flues, from the local point of view biomass often becomes a valuable contribution to energy systems. Gasification is a thermal upgrading process, in which the majority of the carbon is converted into the gaseous form (syngas), leaving an inert residue, by partial combustion of a portion of the fuel in the reactor with air, or with pure oxygen, or with oxygen enriched air or by countercurrent reaction with steam. The produced syngas can be employed as power via additional processing. An experimental reactor with fluidised bed, having capacity of 40 kg/hr, has been installed and put into operation recently. The experimental facility and results of testing the biomass gasification and a mixture of various solid wastes are described in the paper. Temperature of operation ranges from 700 to 900 °C provided near atmospheric pressure. The experimental results are compared with values obtained by simulation using a created and validated mathematical model. A well stirred reactor model for the reactor with fluidised bed has been applied.

Utilising biomass represents one of renewable energy technologies. In spite of the fact that its production and a possible utilisation cannot from the energy potential point of view compete with fossil flues, from the local point of view biomass often becomes a valuable contribution to energy systems. Gasification is a thermal upgrading process, in which the majority of the carbon is converted into the gaseous form (syngas), leaving an inert residue, by partial combustion of a portion of the fuel in the reactor with air, or with pure oxygen, or with oxygen enriched air or by countercurrent reaction with steam. The produced syngas can be employed as power via additional processing. An experimental reactor with fluidised bed, having capacity of 40 kg/hr, has been installed and put into operation recently. The experimental facility and results of testing the biomass gasification and a mixture of various solid wastes are described in the paper. Temperature of operation ranges from 700 to 900 °C provided near atmospheric pressure. The experimental results are compared with values obtained by simulation using a created and validated mathematical model. A well stirred reactor model for the reactor with fluidised bed has been applied.

gasification, biomass, waste, renewable energy

BÉBAR, L., HAVLEN, L., ORAL, J., PUCHÝŘ, R.

20.05.2001

Italian Association of Chemical Engineering

Florence, Italy

4th Conference on Process Integration, Modeling and Optimization for Energy saving and Pollution Reduction

465

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