Encontro de Energia no Meio Rural Agrener
FERNANDES, Marcelo Côrtes and SANCHEZ, Caio Glauco. Projeto gaseificação de gramínea (pennisetum purpureum). In Proceedings of the 3. Encontro de Energia no Meio Rural, 2000, Campinas (SP, Brazil) [online]. 2003 [cited 10 December 2013]. Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022000000200002&lng=en&nrm=iso> .
This study is part of a greater project from IPT (São Paulo's Institute of Technology), which foresaw an energetic use for elephant-grass (pennisetum purpureum) Biomass gasification is an sustainable option for energy supply, which presents low pollutants emission rate and allows - through the global cycle of growing and consumption of feedstock (vegetables), a balance between consumption and production of carbonic gas, preventing an increase of the carbonic gas levels in the atmosphere. A gasifier was built with internal diameter of 400mm and total height of 4600mm . The equipment was tested for gasification of elephant-grass (pennisetum purpureum) at a 100 kg/h rate. The equipment was tested and some constructive faults were detected. In the countryside, this biomass is commonly used for cattle feeding It was evaluated an adequate diesel-electric-generator. to work at hybrid regime, using 70% biomass gas and 30% diesel. With the equipment's construction costs, could be made a first economic feasibility assessment on the pilot-plant to produce electricity by elephant-grass gasification at rural communities. The annual cost of the investment was estimated. The cost of electricity was calculated as a function of the capital cost and the diesel price. This study found values between 0,16 and 0,23 R$/kWh for the produced electricity, what points towards the feasibility of this project.
Keywords : Biomassa; gaseificação; gaseificadores; eletrificação rural; viabilidade econômica; engenharia econômica.