Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
THERMOECONOMIC EVALUATION OF THE PROPOSAL TO INTEGRATE A BIOMASS GASIFICATION SYSTEM IN THE PULP AND PAPER
Submission Author:
Izabela Barbosa , ES
Co-Authors:
Izabela Barbosa, Carlos Eduardo Silva Abreu, Carlos Filipe Lacerda Martins, Felipe Malheiros, Hiago Braz, Igor Belisario
Presenter: Izabela Barbosa
doi://10.26678/ABCM.COBEM2021.COB2021-0509
Abstract
Papermaking is a high consumption energy process, and most of the energy consumed in the processes is generated by burning of two fuels: black liquor and biomass. Thus, the largest mills use cogeneration systems that provide electricity and steam for the papermaking processes. Over the years, studies have been made for different types of configurations for these systems, but almost all are driven by the combustion of eucalyptus and its residues, which can emit a large amount of greenhouse gases. Regarding this, with the current scenario of growing electricity consumption, gasification from biomass is very interesting from the energetic point of view, becoming an alternative process for supplying energy for the papermaking process. In this work, an energy cogeneration system based on biomass gasification was analyzed, evaluating the viability of substituting the traditional process, which are usually steam turbine Rankine cycles, used for the generation of electric energy, studying the action of the composition of the gases obtained in the gasifier. In gasification, there is the possibility of introducing the combined cycle, using the gas in the turbine and the thermal waste in a heat recovery steam generator, thus increasing the overall efficiency of this cycle. Thermoeconomics combines concepts from two different areas, Thermodynamics, part of physics that studies the laws governing energy relations, and economics, which is the science that studies material production and consumption, allowing the costs of each one to be rigorously separated.
Keywords
Pulp and Paper Plant, cogeneration, thermoeconomics, Gasification, Cost Allocation for BIG/GTCC
