Wednesday, February 1, 2012

Biomass for power generation and cogeneration

Biomass for power generation and CHP processes: combustion of biomass is a carbon-free process because the resulting CO2 captured previously by plants to be burned. At present, biomass co-firing modern central coal with efficiencies of up to 45% is the most profitable use of biomass for power generation. Due to problems of availability of raw plant biomass for combined production of heat & power (CHP), are generally smaller and less electrical efficiency in comparison with coal plants (30-34% using dry biomass and around)

22% of municipal solid waste). In cogeneration mode total efficiency can reach 85-90%. Integrated biomass gasification (BIG/GT) gas turbine plants is not commercial, but integrated gasification which combined cycles (IGCC) with liquor (a by-product of pulp & paper industry) black already are in use. Anaerobic digestion to produce biogas is expanding in small applications, outside the network. Bio-refineries can open the door to combined and profitable production of bio-chemicals, electricity and biofuels.

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