Economic evaluation of alternatives for the solution of the residuals of a alcohol plant integrated to a sugar cane manufacturing company

Abstract

This work is based on a previous study of analysis of alternatives for the use of the residues of an alcohol distilling facility of the central region of Cuba. The most accepted alternatives are related to the use of vinaza as fluidizing of cement pastas for the humid process, the fertirriego, the re-circulation for the production of alcohol.

Because of the economic advantages of tortula production and the nutrition needs in a country like Cuba and in the Latin-american context, different variables studied in other projects are analyzed, combined with this alternative to determine the investment requirements and the economic and environmental viability of this production. Three strategies are proposed, based on the production level of the alcohol plant.

• For the production of 550 HL/d, combine fertirriego with the recirculation of vinaza to the process.
• For the production of 700 HL/d, combine the re-circulation with the installation of a tortula plant with 7 t/d
• For the production of 900 HL/d, install a yeast plant with capacity of 15 t/d, and to complement the solution of the residuals with fertirriego.