Design of a marabou torrefaction plant for energy purposes

  • Yasmani Alba-Reyes Centro de Estudios de Energía y Procesos Industriales (CEEPI), Universidad de Sancti Spíritus, Sancti Spíritus
  • Maylier Pérez-Gil Universidad Central "Martha Abreu" de Las Villas
  • Néstor Ley-Chong Universidad Central "Martha Abreu" de Las Villas
  • Luis Ernesto Arteaga-Pérez Unidad de Desarrollo Tecnológico (UDT), Universidad de Concepción, Concepción
Keywords: marabou, energy, torrefaction, design, economy evaluation.

Abstract

The use of forest residues as an energy source is a strategy used by developed and developing countries, mainly due to the decrease of fossil fuel reserves. The integration of torrefaction and pelletisation is one of the most promising routes for energy densification of lignocellulosic biomass. Dichrostachys Cinerea (Marabou) is classified as an invasive plant that affects large extention of arable land and because of its characteristics can be considered as a renewable source of energy. In the present work the objective is to design economically and evaluate a plant for marabou torrefaction for energy purposes. The flows related to the unit processes of the proposed technological scheme are quantified through mass and energy balances, as well as determining the main design parameters of the equipment for each of the stages of the process. The results of the economic evaluation show that the investment is feasible from the economic point of view, with a unit gain of 0, 04 $/kg validated by the dynamic indicators and the Discounted Payback Period of 3,20 years. A sensitivity analysis of different parameters is performed, indicating that the selling price of torrefied pellets have the greatest influence on the Net Present Value ($ 4,94E + 07).

References

ABREU, R. "Utilización energética de la biomasa ligno-celulósica obtenida del Dichrostachys cinerea mediante procesos de termodescomposición". Tesis doctoral. Dipartimento di Scienze Agrarie, Alimentari e Ambientali. Universitá Politecnica delle Marche, 2012.

BATIDZIRAI, B. M et al., "Biomass torrefaction technology: Techno-economic status and future prospects". Energy. 2013, 62, 196-214.

ARTEAGA, L.E., VEGA, M., RODRÍGUEZ, L.C., FLORES, M. ZAROR, C.A. LEDÓN, Y.C. "Life-cycle assessment of coal-biomass based electricity in Chile: focus on using raw vs torrefied wood". Energy for sustainable development. 2015. Vol. 29, p. 81-90.

RICE, E. W, et al. "Standard methods for the examination of water and wastewater". American Public Health Association Washington, DC, 2012.

VAN LOO, S. KOPPEJAN, J. The handbook of biomass combustion & co-firing. Earthscan. London. 2008. ISBN: 978-1-84407-249-1.

BASU, P. Biomass Gasification, Pyrolysis and Torrefaction. Practical design and Theory. New York. Elsevier Ltd. 2013.

KERN, D. Q. Procesos de transferencia de calor. México. Continental.1999.

PETERS, M. S. T., KLAUS, D., WEST, RONALD E. Plant Design and Economics for Chemical Engineers. 2003. ISBN-13: 978-0072392661.

SVANBERG, M., et al. "Analyzing biomass torrefaction supply chain costs". Bioresource Technology. 2013. Vol. 142, pp. 287-296.

SINNOT, R. TOWLER, G. Chemical Engineering Design. Principles and Practice and Economics of Plant and Process Design. Elsevier. Second Edition, 2013. ISBN-0080966608.

MANI, S., et al. "Economics of producing fuel pellets from biomass". Applied Engineering in Agriculture, 2006. Vol. 22, pp. 421-426.

ARIES, R.S., NEWTON, R.D. Chemical engineering cost estimation. McGRAW-HILL BOOK COMPANY, INC. 1955.

Published
2017-12-20
How to Cite
Alba-Reyes, Y., Pérez-Gil, M., Ley-Chong, N., & Arteaga-Pérez, L. (2017). Design of a marabou torrefaction plant for energy purposes. Chemical Technology, 38(1), 145-161. https://doi.org/10.1590/2224-6185.2018.1.%x
Section
Artículos Originales