Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
UTILIZATION OF RESIDUAL HEAT FROM THE DISTILLATION IN THE ETHANOL PRODUCTION PROCESS TO GENERATE ELECTRICITY THROUGH AN ORGANIC RANKINE CYCLE (ORC)
Submission Author:
Andressa Lodi de Brito , SP
Co-Authors:
Andressa Lodi de Brito, Marcelo Modesto
Presenter: Marcelo Modesto
doi://10.26678/ABCM.ENCIT2018.CIT18-0559
Abstract
The need to decrease the dependence of fossil fuels has raised the interest in exploring other renewable energy sources, specially ethanol from sugarcane in Brazil. Inside the ethanol production process, there is a step called distillation, which separates ethanol into water, in the so-called distillation towers, where there is a need for heat (process steam) in the so-called reboilers and the extraction of heat (cold utilities) in the condensers. The heat to be withdrawn in the condensers may be serving as the heat source for Organic Rankine (ORC) cycles. Thus, the main objective of this work is the study of the thermodynamic properties of the application of organic fluids in an ORC for the utilization of residual heat from the distillation system in the sugarcane ethanol production process, as well as the gain of power inserted to the power generation in a traditional Rankine Cycle. The simulations were done in the Engineering Equation Solver software (EES), using an isentropic fluid (R227ea), and the results showed an increase of produced electricity in the ethanol production process, being able to take advantage of a residual heat.
Keywords
Organic Rankine Cycle, Residual Heat, Ethanol Production Process
