Technology for obtaining electric energy fromforestry residues at the Macurijes AgroforestryEnterprise (EAF), Macurijes, Cuba

Abstract

The objective of this investigation was to evaluate the technology proposal for a process of generating
electrical energy from the residues of the forest exploitation of the Macurijes Agroforestry
Company. For which a proposal for steam boiler technology is analyzed based on the potential of
standing forest biomass and forest residues, as well as an analysis of the feasibility of the technology
investment project. As a result, 6 MWh of generation is obtained from the turbine coupled to the
electric generator based on 62,000 tons per year, 1,666 t/day, which represents around 7/t/ hours
with a boiler that produces steam at 25 atm or bar at 460 degrees Celsius in 7,000 hours per year as
a result of periodic maintenance stops. The boiler to be used must have water tubes since they work
at high pressure, are easier to clean, evacuate ashes, combustion products and are safer in their operation
and that average PCS of 2,7 Kcal/kg with a humidity of 40 % as a result of the combination of
a heterogeneous biomass composed of several forest species and the previous treatment given to it.