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Economic trends for temperature of sugarcane bagasse pyrolysis
Author(s) -
Gonçalves Edvan Vinícius,
Seixas Fernanda Lini,
de Souza Scandiuzzi Santana Lindinalva Rocha,
Scaliante Mara Heloisa Neves Olsen,
Gimenes Marcelino Luis
Publication year - 2017
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22796
Subject(s) - bagasse , pyrolysis , biochar , tonne , biomass (ecology) , heat of combustion , work (physics) , fossil fuel , environmental science , pulp and paper industry , mathematics , process engineering , waste management , chemistry , combustion , engineering , agronomy , mechanical engineering , organic chemistry , biology
This work examines some aspects of sugarcane bagasse pyrolysis. Fixed bed pyrolysis was performed varying the final process temperature. Product yields and the variation of quality properties (calorific values) of bio‐oil, biochar, and non‐condensable gas were investigated. A mathematical model to simulate the trend of temperature that maximizes a marginal gain was developed considering the regression equations for yields and prices of products (related to market prices and calorific value of conventional fuels) and for the amount of biomass used to supply energy to the process. Two methodologies were adopted to calculate the optimum process temperature. The results showed very close temperatures (600 and 602 °C) for the best performing simulations of endogenous and fixed prices methods, with little difference between the yields of products, but with good variation between the marginal gains ($124.9/tonne and $129.8/tonne). Finally, the results of endogenous prices method for the fixed bed reactor were compared to the vacuum and fast pyrolysis reactors.