Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
ENERGY PENALTY MODEL FOR FLUE GAS DESULFURIZATION SYSTEMS
Submission Author:
Lara Werncke Vieira , RS
Co-Authors:
Lara Werncke Vieira, Tiago Haubert Andriotty, Paulo Smith Schneider, Augusto Delavald Marques, Jakeline Osowski Tomazi, GUILHERME LACERDA DE OLIVEIRA
Presenter: Lara Werncke Vieira
doi://10.26678/ABCM.ENCIT2018.CIT18-0832
Abstract
The present work aims to present the modeling of a Wet Flue Gas Desulfurization WFGD system and deliver the amount of required energy to filter SO 2 from coal flue gas streams. The system simulation depends on operational parameters to calculate the amount of expended energy need for sulfur removal from flue gas streams and the process impact on power generation. Simulated results are compared to available data in literature from coal-fired power plants. An Energy Penalty Function EPF is proposed to calculate the work ratio R W (kJ/m N 3 ), defined as the ratio of the expended energy for sulfur removal to the flue gas volume. EPF inputs are the inlet and outlet flue gas temperature, SO 2 content and cleaning efficiency. Design of Experiment (Box-Behnken method) is used to build the EPF and to identify main parameter weighting and cross dependencies. The EPF best desulfurization efficiency interval is 97% to 99,5%, witch achieved a relative deviation of 1.86% in respect to the detailed model. The analysis of the control parameters identified that the inlet and outlet temperature variation does not influence the R W , which led to a simplified of the EPF. The simplified function reached an overall maximum deviation of 1.41% in respect to the detailed model. The EPF can be coupled to any kind of combustion system to quantify the energy penalty related to remove SO2 from flue gases released to the environment.
Keywords
Energy Penalty Function, Flue gas filtration, Flue gas desulfurization, FGD, Design of Experiment
