Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
THERMODYNAMIC ANALYSIS OF THE INTEGRATION OF GASIFIED BIOMASS TO THE COMBINED CYCLE (BIG/GTCC) IN THE SUGARCANE INDUSTRY
Submission Author:
Isabella Cristina Boroto Vieira , ES
Co-Authors:
Isabella Cristina Boroto Vieira, Carlos Eduardo Silva Abreu
Presenter: Isabella Cristina Boroto Vieira
doi://10.26678/ABCM.COBEM2021.COB2021-0319
Abstract
Due to the concern about the depletion of fossil fuel reserves, the increase in the consumption of electric energy due to population growth, as well as the need to preserve the environment, in recent years the increasing demand for innovations aimed at the use of fuels from renewable sources, such as biomass. The vast territorial extension of Brazil, provides many fertile lands, which favor the cultivation of sugarcane. Bagasse is a by-product from the crushing of sugarcane, with high energy potential, which is why several sugar and alcohol plants use it to meet the steam demands required by the process, in addition to generating electrical energy, being called the cogeneration system. Cogeneration plants traditionally use the conventional system with extraction and condensation steam turbines (CEST), based on a simple Rankine cycle, using a steam extraction condensation turbine. The direct burning of solid bagasse, in this configuration presents opportunities for improvements aiming at a better and more efficient use of this fuel to take advantage of its chemical potential to generate electrical and thermal energy and to feed the sugar production process itself. Therefore, in order to promote the increase in efficiency delivered by the CEST method, modern technologies have been developed, aiming at more efficient cogeneration plants, such as the integration of sugarcane bagasse gasification into the combined cycle (BIG / GTCC) . This method uses partial oxidation of the solid input to be transformed into synthesis gases, which are still susceptible to combustion and have satisfactory values of lower heating value (LHV). Thus, an increase in steam and electricity generation efficiencies is provided in a traditional sugar and alcohol industry. Therefore, the article will have as objectives, to point out the challenges related to the study and to verify the viability of the implementation of the BIG/GTCC technology, when making a comparison considering the cogeneration, through the thermodynamic analysis of the mentioned configurations.
Keywords
renewable energy, Sugarcane bagasse, CEST, BIG/GTCC, Energetic efficiency
