Abstract

DE ARMAS-MARTINEZ, Ana Celia; MORALES ZAMORA, Marlen; ALBERNAS CARVAJAL, Yailet  and  GONZALEZ SUAREZ, Erenio. Projection of a sugar industry to become a biorefinery from second and third generation biofuels. RTQ [online]. 2019, vol.39, n.3, pp. 489-507. ISSN 2224-6185.

The Cuban sugar industry opens possibilities for the development of a biorefinery by the characteristics of its currents and its facilities for obtaining different products, co-products and energy. The schemes proposed for the development of a biorefinery in a Cuban sugar industry consider obtaining second-generation alcohol (2G) with self-supply of energy from the plant (I), obtaining alcohol from Honey-Juice filters and Hydrolyzate from Bagasse (II), the obtaining of first generation alcohol (1G) and third generation biodiesel (3G) (III), as well as the combination of the first two alternatives with the third. Alternatives II and V are those that achieve lower consumption of honey, although these are affected by the reduction of honey in the plant by 11% by diverting 144 t / d of juice from the filters. While, alternative I and IV are those with lower water consumption for the dilution of honey. On the other hand, when analyzing the economic feasibility of the proposed schemes the best alternative from the technical economic point of view is the III with a NPV of $ 22 843 162, an IRR of 29.5% and a recovery period of 4 years . However, from the point of view of integration of the sugar industry to a biorefinery is the (IV) with a NPV of $ 17 088 391.70, an IRR of 34.9% for a recovery period of 5.3 years.

Keywords : biorefinery; first generation; second generation; third generation.

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